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WO2021010186A1 - Sampling probe for gas measurement device - Google Patents

Sampling probe for gas measurement device Download PDF

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Publication number
WO2021010186A1
WO2021010186A1 PCT/JP2020/026153 JP2020026153W WO2021010186A1 WO 2021010186 A1 WO2021010186 A1 WO 2021010186A1 JP 2020026153 W JP2020026153 W JP 2020026153W WO 2021010186 A1 WO2021010186 A1 WO 2021010186A1
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WO
WIPO (PCT)
Prior art keywords
probe
sampling probe
steady rest
sampling
flue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/026153
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French (fr)
Japanese (ja)
Inventor
温子 千田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
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Shimadzu Corp
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Filing date
Publication date
Application filed by Shimadzu Corp filed Critical Shimadzu Corp
Priority to CN202080046039.0A priority Critical patent/CN114072655B/en
Priority to JP2021532786A priority patent/JP7294423B2/en
Publication of WO2021010186A1 publication Critical patent/WO2021010186A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state

Definitions

  • the present invention relates to a sampling probe for a gas measuring device.
  • the sampling probe has a tubular body, and has a sampling port for collecting the exhaust gas in the flue at one end of the body and a discharge port for discharging the exhaust gas to the detector side at the other end.
  • a sampling probe is used by inserting it into a hole provided in the wall of the flue through which the exhaust gas passes from the end on the sampling port side.
  • the concentration of the components of the exhaust gas differs depending on the position in the flue, so that the position of the hole and the length of inserting the sampling probe from the hole (insertion) so that the sampling port is located at a predetermined position in the flue. Chief) is determined.
  • the outer diameter of the sampling probe is about several cm, but the insertion length may reach several m to ten m (several hundred cm to 1,000 cm) depending on the size of the flue.
  • the insertion length is increased in this way, the force received by the sampling probe from the exhaust gas flowing in the flue increases.
  • a Karman vortex is formed behind the sampling probe, and the sampling probe vibrates due to this Karman vortex.
  • the frequency of this vibration matches the natural frequency of the tube of the sampling probe, the sampling probe resonates. When such a large force is applied or resonance occurs, the sampling probe may be broken.
  • the outer diameter of the sampling probe is increased so as to cover the periphery of the sampling probe except for the sampling port.
  • a guide pipe having a large inner diameter and a length slightly shorter than the insertion length is provided on the inner surface side of the wall of the flue.
  • the sampling port at the tip of the sampling probe cannot be covered with a guide pipe, that part receives the force of the exhaust gas flow. Since the tip has a long distance from the fixed part, the bending moment becomes large even with a small force, and the sampling probe flexes greatly. In addition, the sampling probe vibrates due to the flow of exhaust gas and the force received from the Karman vortex generated behind the flow. When this vibration approaches the natural frequency of the sampling probe, it resonates and may bend significantly.
  • the stopper Since the stopper is attached for the above purpose, it is desirable to make the gap between the sampling probe and the guide pipe as small as possible.
  • the guide pipe since the guide pipe is provided inside the flue, it is usually installed by an installation body such as a boiler or an incinerator or a maintenance body thereof (hereinafter, these are referred to as "users").
  • sampling probes are manufactured by analyzer manufacturers so that they can be used in various situations. Therefore, it is difficult to attach a stopper to the sampling probe that makes the gap between the sampling probe and the guide pipe zero. Therefore, there is a problem that the sampling probe still has a bending force.
  • An object to be solved by the present invention is to provide a sampling probe for a gas measuring device that can suppress deterioration when inserted into a guide pipe provided in a flue and used.
  • the present invention made to solve the above problems is a sampling probe for a gas measuring device inserted into a guide pipe.
  • Tubular probe body and It is provided with a steady rest member provided on the outer surface of the probe body.
  • the steady rest member has a first member and a second member which is arranged in series with the first member and has a higher elastic modulus than a material constituting the first member.
  • the steady rest member since the steady rest member has a second member having a higher elastic modulus than the first member together with the first member, it is inserted into a guide pipe provided in the flue. Even if the inner diameter of the guide pipe and the position of the sampling probe with respect to the guide pipe are slightly different from those assumed by the analyzer manufacturer, the second member expands and contracts, so that the steady rest member and the guide are used. It is possible to eliminate the gap with the inner surface of the pipe. This makes it possible to handle various guide pipes, further suppress the influence of bending and vibration due to the flow of exhaust gas, and suppress deterioration of the sampling probe.
  • FIG. 6 is a cross-sectional view showing a state in which the steady rest member of the modified example shown in FIG. 6 is attached to the flue.
  • FIG. 6 is a cross-sectional view of a sampling probe of a modified example shown in FIG. 8A.
  • FIG. 1 shows a schematic configuration diagram of the sampling probe 10 of the present embodiment.
  • the sampling probe 10 has a probe body 11, a flange 12, and a steady rest member 13.
  • the probe body 11 is a linear tubular member having a sampling port 111 for collecting exhaust gas from the flue at one end and a gas measuring device for collecting exhaust gas from the sampling port 111 at the other end. It has a discharge port 112 for discharging to the detector of.
  • stainless steel can be used as the material of the probe body 11, but the present invention is not limited to this.
  • the outer diameter of the probe body 11 is usually several cm, but this is also not limited to this in the present invention.
  • the length of the probe main body 11 is appropriately determined in consideration of the measurement position in the flue, that is, the distance from the position where the exhaust gas is collected to the wall of the flue.
  • the flange 12 is provided with a hole 122 in the outer peripheral portion of the disk 121 into which a bolt for fixing to the flue side flange 93 provided in the flue 91 is inserted as described later.
  • a hole is provided in the center of the disk 121, and by screwing the probe body 11 into this hole, the flange 12 is fixed to the outer surface 113 of the probe body 11 near the end near the discharge port 112 in the longitudinal direction. ing.
  • the steady rest member 13 is fixed to the outer surface 113 of the probe main body 11 closer to the sampling port 111 than the flange 12.
  • the steady rest members 13 are provided at two locations at intervals in the longitudinal direction of the probe main body 11, but may be provided at only one location or at three or more locations.
  • the steady rest member 13 has a first member 1301 and a second member 1302.
  • the first member 1301 is provided so as to project from a part of the outer surface 113 of the probe main body 11, and the second member 1302 is provided on the side of the first member 1301 opposite to the outer surface 113. ..
  • the first member 1301 and the second member 1302 are schematically shown in FIG. 1, specifically, for example, the configuration shown in FIG. 2 can be adopted.
  • FIG. 2 shows a state in which the steady rest member 13 is attached to the probe main body 11 in a cross section perpendicular to the longitudinal direction of the tube of the probe main body 11 (AA cross section in FIG. 1).
  • the steady rest member 13 has a semicircular portion 1304 having a shape in which two plate members 1303 are bent into a semicircular shape (partially circular) along the outer surface 113 of the probe main body 11 in the AA cross section, and from both ends of the semicircle. It is formed into a shape having protrusions 1305 and 1306 protruding in a direction perpendicular to the outer surface 113, respectively.
  • both plate members 1303 are fixed to each other by binding the portion where the protrusion 1305 and the protrusion 1306 are overlapped with the wire 1307.
  • both plate materials 1303 may be fixed to each other by using a screw, an adhesive or the like instead of the wire 1307.
  • the one in which the protruding portion 1305 and the protruding portion 1306 are overlapped corresponds to the first member 1301.
  • two first members 1301 are provided at intervals of 180 ° in the circumferential direction of the outer surface 113 of the probe main body 11.
  • a second member 1302 made of a leaf spring is attached to each of the tips of these two first members 1301.
  • the second member 1302 is fixed to the first member 1301 by sandwiching a part of the leaf spring between the protruding portions 1305 and 1306 of both plate members 1303.
  • a plate-shaped member having a higher elastic modulus (higher flexibility and lower rigidity) than the plate member 1303 can be used.
  • the two plate members 1303 are overlapped, so that the one plate member 1303 has a higher elastic modulus (higher flexibility and lower rigidity) than the first member 1301.
  • the second member 1302 one plate-shaped member of the same type as the plate material 1303 (having the same elastic modulus and flexibility) may be used.
  • a guide pipe 92 penetrating the wall 911 of the flue 91 through which the exhaust gas to be measured flows is arranged in advance so that one end is inside the flue 91 and the other end is outside the flue 91. It is attached to 911. Further, the flue side flange 93 is attached to the end of the guide pipe 92 outside the flue 91.
  • the flue side flange 93 is provided with a hole at a position corresponding to the hole 122 of the flange 12 of the sampling probe 10.
  • the length of the guide pipe 92 is set to be slightly shorter than the distance between the sampling port 111 of the sampling probe 10 and the surface of the flange 12 on the flue 91 side.
  • the inner diameter of the guide pipe 92 is longer than the distance between the tips of the two first members 1301 of the steady rest member 13, and the second member 1302 attached to the tips of these two first members 1301 It may be within a range shorter than the distance between the tips of the second member 1302 in the extended state (no load state).
  • the position where the guide pipe 92 is inserted into the wall 911 of the flue 91 and the length of insertion into the flue 91 from that position are such that the sampling port 111 is inside the flue 91 when the sampling probe 10 is installed as described below. It is set to be placed in a predetermined position.
  • the probe main body 11 is inserted into the guide pipe 92 from the outer end of the flue 91, and the flange 12 of the sampling probe 10 is bolted to the flue side flange 93.
  • the sampling probe 10 smokes in a state where the sampling port 111 is arranged at a predetermined position in the flue 91 and the periphery of the probe main body 11 except for the vicinity of the sampling port 111 is covered with the guide pipe 92. It is attached to the road 91.
  • the inner diameter of the guide pipe 92 is within a range longer than the distance between the tips of the two first members 1301 and shorter than the distance between the tips of the two extended second members 1302.
  • the second member 1302 comes into contact with the inner surface of the guide pipe 92 in a compressed state (the leaf spring is bent) (FIG. 4).
  • the inner diameter of the guide pipe 92 prepared by the user and the mounting position of the sampling probe 10 with respect to the guide pipe 92 are slightly different from those assumed by the analyzer manufacturer.
  • the second member 1302 can be brought into contact with the inner surface of the guide pipe 92.
  • the gas measuring device collects the exhaust gas in the flue 91 from the sampling port 111 and introduces it into the detector via the pipe of the probe main body 11 and the discharge port 112. Then, the concentration of a predetermined component contained in the exhaust gas is measured. Since this measurement can be performed by the same method as the conventional method, detailed description thereof will be omitted.
  • the second member 1302 can be brought into contact with the inner surface of the guide pipe 92, the gap between the steady rest member 13 and the inner surface of the guide pipe 92 can be eliminated. As a result, even if the probe main body 11 receives a force due to the flow of the exhaust gas in the flue 91, the probe main body 11 is less likely to bend or vibrate. Therefore, deterioration / damage of the sampling probe 10 can be suppressed.
  • the fact that the steady rest member 13 is in contact with the inner surface of the guide pipe 92 and the probe main body 11 is less likely to bend corresponds to an increase in the rigidity of the probe main body 11.
  • the vibration frequency becomes higher than when the steady rest member 13 is not provided. Therefore, by adding the steady rest member 13 to the conventional sampling probe in which resonance is generated by the force received from the exhaust gas, the vibration frequency deviates from the natural frequency, so that resonance can be prevented.
  • FIG. 3 shows an example in which the guide pipe 92 is attached to the wall 911 so that its longitudinal direction is perpendicular to the wall 911 of the flue 91, as shown in FIG. 5, the flue of the guide pipe 92 is shown.
  • the guide pipe 92 may be tilted and attached to the wall 911 so that the end inside the 91 is below the end outside the flue 91.
  • sampling probe according to the present invention is not limited to the above embodiment, and various modifications are possible. Although some modifications are shown below, it goes without saying that the present invention is not limited to the above-described embodiments and these modifications.
  • a part of the second member (leaf spring) 1302 is fixed to the first member 1301 by sandwiching it between the protruding portions 1305 and 1306 of the two plate members 1303, but the protruding portion 1305 A part of the second member 1302 may be fixed to either one or both of 1306 by adhesion, welding, screwing or the like.
  • the steady rest member 131 shown in FIG. 6 can be used.
  • the steady rest member 131 includes a semicircular portion 1314 having a shape in which two plate members 1313 are bent in a semicircular shape along the outer surface 113 of the probe main body 11 in the AA cross section shown in FIG. 1, and both ends of the semicircle. It has protrusions 1315 and 1316 that project in a direction perpendicular to the outer surface 113, respectively.
  • the steady rest member 131 As for the steady rest member 131, a combination of the semicircular portions 1314 of these two plate materials 1313 goes around the outer surface 113 once, and the protruding portion 1315 of one plate material 1313 and the protruding portion 1316 of the other plate material 1313 are overlapped with each other. It is attached to the probe body 11.
  • the points described so far are the same as the configuration and mounting method of the steady rest member 13.
  • the steady rest member 131 of FIG. 6 is different from the steady rest member 13 in that one protruding portion 1315 of the plate member 1313 is longer than the other protruding portion 1316 and protrudes to the opposite side to the outer surface 113. doing.
  • the steady rest member 131 is also different from the steady rest member 13 in that it does not have a second member separate from the plate member 1313.
  • the portion where the protruding portion 1315 of one plate material 1313 and the protruding portion 1316 of the other plate material 1313 overlap corresponds to the first member 1311, and the protruding portion of the other plate material 1313 of the protruding portions 1315.
  • the portion that does not overlap with 1316 and protrudes to the opposite side of the probe main body 11 corresponds to the second member 1312.
  • the steady rest member 131 of this modified example can be installed in the flue 91 by the same method as the steady rest member 13 in the sampling probe 10 of the above embodiment (see FIG. 7).
  • two steady rest members 13 are provided at one location in the longitudinal direction of the probe main body 11, but the steady rest member 13 may be at least one or three.
  • the above may be provided.
  • the force received from the exhaust gas flow by attaching the steady rest member 13 to the flue 91 so that the steady rest member 13 is arranged on the downstream side of the exhaust gas flow in the flue 91. It is possible to suppress the bending of the probe main body 11 due to the above.
  • the plate member 1303 When only one steady rest member 13 is provided for each location in the longitudinal direction, the plate member 1303 is bent into a full circle instead of being bent into a semicircle, and both ends are projected in a direction perpendicular to the outer surface 113 of the probe main body 11. Just do it. Further, when three steady rest members 13 are provided at one location in the longitudinal direction, three plate members 1303 are prepared by bending the plate member 1303 into a partial circle and projecting both ends in a direction perpendicular to the outer surface 113 of the probe main body 11. Then, the partial circles of the three plate members 1303 may be combined to form one circle.
  • the angle of the partial circular shape of each plate material 1303 may be 120 °, or may be different for each plate material 1303. The same applies to the case where four or more steady rest members 13 are provided at one location in the longitudinal direction.
  • another spring such as a string-wound spring may be used instead of the leaf spring, or an elastic body other than the spring such as rubber may be used as long as it has heat resistance in the usage environment.
  • the second member 1302 is provided on the side of the first member 1301 opposite to the outer surface 113 of the probe main body 11, but the first member 1302 is like the steady rest member 132 shown in FIGS. 8A and 8B.
  • a second member 1322 may be provided between the member 1321 and the outer surface 113 of the probe body 11.
  • a sampling probe for a gas measuring device inserted into a guide pipe Tubular probe body and It is provided with a steady rest member provided on the outer surface of the probe body.
  • the steady rest member has a first member and a second member which is arranged in series with the first member and has a higher elastic modulus than a material constituting the first member.
  • the steady rest member since the steady rest member has a second member having a higher elastic modulus than the first member together with the first member, the inside of the guide pipe provided in the flue Even if the inner diameter of the guide pipe and the position of the sampling probe with respect to the guide pipe are slightly different from those assumed by the analyzer manufacturer, the second member expands and contracts to prevent the steady rest member. It is possible to eliminate the gap between the pipe and the inner surface of the guide pipe. This makes it possible to handle various guide pipes, further suppress the influence of bending and vibration due to the flow of exhaust gas, and suppress deterioration of the sampling probe.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the first item.
  • the first member projects from the outer surface of the probe body and
  • the second member is provided on the outside of the first member with reference to the probe body.
  • the steady rest member is more stable. It can be held on the outer surface of the probe body.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the second aspect.
  • the first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body.
  • the second member is a leaf spring sandwiched between the two protruding portions.
  • a steady rest device can be formed by a simple structure of a protruding portion composed of two plate materials and a leaf spring.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the third item.
  • Two or more steady rests are provided, One of the two protrusions is connected to one of the two protrusions in the other steady rest by a plate material bent along the outer surface.
  • one of the two protrusions constituting the first member and one of the two protrusions constituting the other first member are the probe main body. Since it is configured as an integral part together with the plate material bent along the outer surface, the number of parts of the steady rest member can be reduced.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the second aspect.
  • the first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body. In the second member, one of the two projecting portions protrudes from the other on the side opposite to the outer surface.
  • the steady rest member can be formed by a simple configuration. it can.
  • the sampling probe for a gas measuring device is the sampling probe for a gas measuring device according to the fifth aspect.
  • Two or more steady rest members are provided.
  • One of the two protrusions is connected to the other of the two protrusions of the other steady rest member by a plate material bent along the outer surface of the probe body. ..
  • the one of the two protrusions constituting the first member and the other of the two protrusions constituting the other first member are probes. Since it is integrated with the plate material bent along the outer surface of the main body, the number of parts of the steady rest member can be reduced.

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Abstract

This sampling probe 10 for a gas measurement device which is inserted into a guide pipe 92 comprises: a tubular probe body 11; and a vibration prevention member 13 provided to the outer surface 113 of the probe body 11, wherein the vibration prevention member 13 has a first member 1301 and a second member 1302 that is disposed in series with the first member 1301 and has a greater elastic modulus than the material constituting the first member 1301.

Description

ガス測定装置用サンプリングプローブSampling probe for gas measuring device

　本発明は、ガス測定装置用サンプリングプローブに関する。 The present invention relates to a sampling probe for a gas measuring device.

　火力発電所等が有する石炭又は重油を燃焼させるボイラや、ゴミを焼却する焼却炉等では、それらから排出される排ガスが有する所定の成分（例えば窒素酸化物(NOx)、硫黄酸化物(SOx)、一酸化炭素(CO)、二酸化炭素(CO2)）の濃度が排出基準を満たしているかを確認するために、該濃度の測定が行われている。このような測定のために、従来よりサンプリングプローブが用いられている（例えば特許文献１）。 In boilers that burn coal or heavy oil owned by thermal power plants, incinerators that incinerate garbage, etc., certain components (for example, nitrogen oxides (NO x ), sulfur oxides (SO)) contained in the exhaust gas emitted from them The concentrations of x ), carbon monoxide (CO), and carbon dioxide (CO 2 )) are measured to confirm that they meet the emission standards. A sampling probe has been conventionally used for such measurement (for example, Patent Document 1).

　サンプリングプローブは管状の本体を有し、本体の一方の端に煙道内の排ガスを採取する採取口を、他方の端に排ガスを検出器側に排出する排出口を、それぞれ有する。このようなサンプリングプローブは、排ガスが通過する煙道の壁に設けられた孔に採取口側の端から挿入して用いられる。一般に、排ガスの成分の濃度は煙道中の位置によって異なることから、煙道中の所定の位置に採取口が位置するように、前記孔の位置、及び該孔からサンプリングプローブを挿入する長さ（挿入長）を定める。 The sampling probe has a tubular body, and has a sampling port for collecting the exhaust gas in the flue at one end of the body and a discharge port for discharging the exhaust gas to the detector side at the other end. Such a sampling probe is used by inserting it into a hole provided in the wall of the flue through which the exhaust gas passes from the end on the sampling port side. In general, the concentration of the components of the exhaust gas differs depending on the position in the flue, so that the position of the hole and the length of inserting the sampling probe from the hole (insertion) so that the sampling port is located at a predetermined position in the flue. Chief) is determined.

　通常、サンプリングプローブの外径は数cm程度であるのに対して、挿入長は煙道の大きさによっては数m～十m（数百cm～千cm）に達することがある。このように挿入長が長くなると、煙道内を流れる排ガスからサンプリングプローブが受ける力が大きくなる。また、排ガスがサンプリングプローブに衝突することによってサンプリングプローブの後方にカルマン渦が形成され、このカルマン渦によりサンプリングプローブが振動する。この振動の周波数がサンプリングプローブの管の固有振動数に一致すると、サンプリングプローブが共振する。このように大きな力が加えられたり共振が生じたりすると、サンプリングプローブが折損してしまうおそれがある。 Normally, the outer diameter of the sampling probe is about several cm, but the insertion length may reach several m to ten m (several hundred cm to 1,000 cm) depending on the size of the flue. When the insertion length is increased in this way, the force received by the sampling probe from the exhaust gas flowing in the flue increases. Further, when the exhaust gas collides with the sampling probe, a Karman vortex is formed behind the sampling probe, and the sampling probe vibrates due to this Karman vortex. When the frequency of this vibration matches the natural frequency of the tube of the sampling probe, the sampling probe resonates. When such a large force is applied or resonance occurs, the sampling probe may be broken.

　そこで、煙道中の所定の位置に採取口が位置するように前記孔からサンプリングプローブを挿入したときに、該採取口を除いた部分のサンプリングプローブの周囲を覆うように、サンプリングプローブの外径よりも大きい内径を有し、挿入長よりもやや短い長さを有するガイドパイプを煙道の壁の内面側に設けるという構成が取られている。これにより、排ガスからの力のほとんどはガイドパイプが受けることとなり、サンプリングプローブへの影響が抑えられる。 Therefore, when the sampling probe is inserted through the hole so that the sampling port is located at a predetermined position in the flue, the outer diameter of the sampling probe is increased so as to cover the periphery of the sampling probe except for the sampling port. A guide pipe having a large inner diameter and a length slightly shorter than the insertion length is provided on the inner surface side of the wall of the flue. As a result, most of the force from the exhaust gas is received by the guide pipe, and the influence on the sampling probe is suppressed.

　しかし、サンプリングプローブの先端の採取口はガイドパイプで覆うことはできないため、その部分は排ガスの流れの力を受ける。先端は固定されている部分からの距離が長いため、小さな力でも曲げモーメントは大きくなり、サンプリングプローブは大きくたわむ。また、サンプリングプローブは、排ガスの流れやその流れの後方に生じるカルマン渦等から受ける力によって振動が生じる。この振動がサンプリングプローブの固有振動数に近くなると共振し、大きくたわむ可能性がある。 However, since the sampling port at the tip of the sampling probe cannot be covered with a guide pipe, that part receives the force of the exhaust gas flow. Since the tip has a long distance from the fixed part, the bending moment becomes large even with a small force, and the sampling probe flexes greatly. In addition, the sampling probe vibrates due to the flow of exhaust gas and the force received from the Karman vortex generated behind the flow. When this vibration approaches the natural frequency of the sampling probe, it resonates and may bend significantly.

特開2014-092383号公報Japanese Unexamined Patent Publication No. 2014-092383

　上記のような問題に対して、サンプリングプローブとガイドパイプの間の隙間を小さくするように、サンプリングプローブの管状の本体の外面に、該外面から突出するように金具（ストッパ）を取り付けることが考えられる。この構成によれば、先端に排ガスの流れの力を受けたときのサンプリングプローブのたわみを小さくし、サンプリングプローブの根元に大きな力がかからないようにすることができる。 For the above problems, it is conceivable to attach a metal fitting (stopper) to the outer surface of the tubular body of the sampling probe so as to protrude from the outer surface so as to reduce the gap between the sampling probe and the guide pipe. Be done. According to this configuration, the deflection of the sampling probe when the force of the exhaust gas flow is applied to the tip can be reduced, and a large force can be prevented from being applied to the base of the sampling probe.

　ストッパは上記のような目的で取り付けられるため、サンプリングプローブとガイドパイプの間の隙間をできるだけ小さくするような形態とすることが望ましい。しかし、ガイドパイプは煙道の内部に設けることから、通常、ボイラや焼却炉等の設置主体又はそのメンテナンス主体（以下、これらを「ユーザ」と呼ぶ）が設置する。一方、サンプリングプローブは分析装置メーカーによって、様々な場面で使用できるように製造される。従って、サンプリングプローブとガイドパイプの間の隙間をゼロにするようなストッパをサンプリングプローブに取り付けることは困難であった。そのため、サンプリングプローブには未だ曲げの力が掛かるという問題があった。 Since the stopper is attached for the above purpose, it is desirable to make the gap between the sampling probe and the guide pipe as small as possible. However, since the guide pipe is provided inside the flue, it is usually installed by an installation body such as a boiler or an incinerator or a maintenance body thereof (hereinafter, these are referred to as "users"). On the other hand, sampling probes are manufactured by analyzer manufacturers so that they can be used in various situations. Therefore, it is difficult to attach a stopper to the sampling probe that makes the gap between the sampling probe and the guide pipe zero. Therefore, there is a problem that the sampling probe still has a bending force.

　本発明が解決しようとする課題は、煙道に設けたガイドパイプの中に挿入して用いる場合に劣化を抑えることができるガス測定装置用サンプリングプローブを提供することである。 An object to be solved by the present invention is to provide a sampling probe for a gas measuring device that can suppress deterioration when inserted into a guide pipe provided in a flue and used.

　上記課題を解決するために成された本発明は、ガイドパイプの中に挿入されるガス測定装置用サンプリングプローブであって、
　管状のプローブ本体と、
　前記プローブ本体の外面に設けられた振れ止め部材とを備え、
　前記振れ止め部材は、第１部材と、前記第１部材に対して直列に配置され、前記第１部材を構成する材料よりも弾性率の大きい第２部材とを有する。 The present invention made to solve the above problems is a sampling probe for a gas measuring device inserted into a guide pipe.
Tubular probe body and
It is provided with a steady rest member provided on the outer surface of the probe body.
The steady rest member has a first member and a second member which is arranged in series with the first member and has a higher elastic modulus than a material constituting the first member.

　本発明に係るガス測定装置用サンプリングプローブによれば、振れ止め部材が第１部材と共に第１部材よりも弾性率が大きい第２部材を有することから、煙道に設けたガイドパイプの中に挿入して用いる場合に、該ガイドパイプの内径やガイドパイプに対するサンプリングプローブの位置が、分析装置メーカーが想定するものとは多少異なっていても、第２部材が伸縮することにより、振れ止め部材とガイドパイプの内面との隙間を無くすことができる。これにより、様々なガイドパイプに対応することが可能となり、また、排ガスの流れによる曲がりや振動の影響をより一層抑え、サンプリングプローブの劣化を抑えることができる。 According to the sampling probe for a gas measuring device according to the present invention, since the steady rest member has a second member having a higher elastic modulus than the first member together with the first member, it is inserted into a guide pipe provided in the flue. Even if the inner diameter of the guide pipe and the position of the sampling probe with respect to the guide pipe are slightly different from those assumed by the analyzer manufacturer, the second member expands and contracts, so that the steady rest member and the guide are used. It is possible to eliminate the gap with the inner surface of the pipe. This makes it possible to handle various guide pipes, further suppress the influence of bending and vibration due to the flow of exhaust gas, and suppress deterioration of the sampling probe.

　さらに、振れ止め部材がガイドパイプの内面に接触することでプローブ本体の曲がりが抑えられることは、プローブ本体の剛性が高くなることに相当する作用を奏する。これにより、プローブ本体の固有振動数が高くなる。そのため、排ガスから受ける力によってプローブ本体に共振が生じるおそれがある場合に、プローブ本体に上記振れ止め部材を設けることによって斯かる共振を防止することができる、という点においてもサンプリングプローブの劣化を抑えることができる。 Furthermore, suppressing the bending of the probe body by contacting the steady rest member with the inner surface of the guide pipe has an effect equivalent to increasing the rigidity of the probe body. As a result, the natural frequency of the probe body becomes high. Therefore, when there is a possibility that resonance may occur in the probe main body due to the force received from the exhaust gas, such resonance can be prevented by providing the steady rest member in the probe main body, and deterioration of the sampling probe is also suppressed. be able to.

本発明に係るガス測定装置用サンプリングプローブの一実施形態を示す概略構成図。The schematic block diagram which shows one Embodiment of the sampling probe for the gas measuring apparatus which concerns on this invention. 本実施形態のサンプリングプローブにおける振れ止め部材の構成の詳細を示す断面図。The cross-sectional view which shows the detail of the structure of the steady rest member in the sampling probe of this embodiment. 本実施形態のサンプリングプローブを煙道に取り付けた状態を示す概略構成図。The schematic block diagram which shows the state which attached the sampling probe of this embodiment to a flue. 本実施形態のサンプリングプローブを煙道に取り付けた状態を示す断面図。The cross-sectional view which shows the state which attached the sampling probe of this embodiment to a flue. 本実施形態のサンプリングプローブを煙道に取り付けた状態の変形例を示す概略構成図。The schematic block diagram which shows the modification of the state which attached the sampling probe of this embodiment to a flue. 本実施形態のサンプリングプローブにおける振れ止め部材の変形例を示す断面図。The cross-sectional view which shows the modification of the steady rest member in the sampling probe of this embodiment. 図６に示した変形例の振れ止め部材を煙道に取り付けた状態を示す断面図。FIG. 6 is a cross-sectional view showing a state in which the steady rest member of the modified example shown in FIG. 6 is attached to the flue. 本実施形態のサンプリングプローブの変形例を示す概略構成図。The schematic block diagram which shows the modification of the sampling probe of this embodiment. 図８Ａに示した変形例のサンプリングプローブの断面図。FIG. 6 is a cross-sectional view of a sampling probe of a modified example shown in FIG. 8A.

　以下、図面を参照しつつ、本発明に係るガス測定装置用サンプリングプローブ（以下、「サンプリングプローブ」と略記する）の実施形態を説明する。 Hereinafter, embodiments of a sampling probe for a gas measuring device (hereinafter, abbreviated as “sampling probe”) according to the present invention will be described with reference to the drawings.

(1) 本実施形態のサンプリングプローブの構成
　図１に、本実施形態のサンプリングプローブ１０の概略構成図を示す。このサンプリングプローブ１０は、プローブ本体１１、フランジ１２、及び振れ止め部材１３を有する。 (1) Configuration of sampling probe of the present embodiment FIG. 1 shows a schematic configuration diagram of the sampling probe 10 of the present embodiment. The sampling probe 10 has a probe body 11, a flange 12, and a steady rest member 13.

　プローブ本体１１は直線状である管状の部材であって、一方の端に、煙道から排ガスを採取する採取口１１１を有し、他方の端に、採取口１１１から採取した排ガスをガス測定装置の検出器へ排出する排出口１１２を有する。プローブ本体１１の材料には、例えばステンレス鋼を用いることができるが、本発明ではそれには限定されない。プローブ本体１１の外径は、通常は数cmであるが、これも本発明ではそれには限定されない。プローブ本体１１の長さは、煙道中の測定位置、すなわち排ガスを採取する位置から煙道の壁までの距離を勘案して適宜定める。 The probe body 11 is a linear tubular member having a sampling port 111 for collecting exhaust gas from the flue at one end and a gas measuring device for collecting exhaust gas from the sampling port 111 at the other end. It has a discharge port 112 for discharging to the detector of. For example, stainless steel can be used as the material of the probe body 11, but the present invention is not limited to this. The outer diameter of the probe body 11 is usually several cm, but this is also not limited to this in the present invention. The length of the probe main body 11 is appropriately determined in consideration of the measurement position in the flue, that is, the distance from the position where the exhaust gas is collected to the wall of the flue.

　フランジ１２は、円板１２１の外周部に、後述のように煙道９１に設けられる煙道側フランジ９３に固定するためのボルトが挿入される孔１２２が設けられたものである。円板１２１の中心には孔が設けられており、この孔にプローブ本体１１をねじ込むことにより、フランジ１２は、長手方向の排出口１１２寄りの端付近の、プローブ本体１１の外面１１３に固定されている。 The flange 12 is provided with a hole 122 in the outer peripheral portion of the disk 121 into which a bolt for fixing to the flue side flange 93 provided in the flue 91 is inserted as described later. A hole is provided in the center of the disk 121, and by screwing the probe body 11 into this hole, the flange 12 is fixed to the outer surface 113 of the probe body 11 near the end near the discharge port 112 in the longitudinal direction. ing.

　振れ止め部材１３は、フランジ１２よりも採取口１１１寄りの、プローブ本体１１の外面１１３に固定されている。図１に示した例では、振れ止め部材１３をプローブ本体１１の長手方向に間隔を空けて2箇所に設けているが、1箇所にのみ、又は3箇所以上に設けてもよい。 The steady rest member 13 is fixed to the outer surface 113 of the probe main body 11 closer to the sampling port 111 than the flange 12. In the example shown in FIG. 1, the steady rest members 13 are provided at two locations at intervals in the longitudinal direction of the probe main body 11, but may be provided at only one location or at three or more locations.

　振れ止め部材１３は、第１部材１３０１と第２部材１３０２とを有する。本実施形態では、第１部材１３０１はプローブ本体１１の外面１１３の一部から突出するように設けられ、第２部材１３０２は該第１部材１３０１の該外面１１３とは反対側に設けられている。第１部材１３０１及び第２部材１３０２は、図１では模式的に示したが、具体的には、例えば図２に示す構成を取ることができる。 The steady rest member 13 has a first member 1301 and a second member 1302. In the present embodiment, the first member 1301 is provided so as to project from a part of the outer surface 113 of the probe main body 11, and the second member 1302 is provided on the side of the first member 1301 opposite to the outer surface 113. .. Although the first member 1301 and the second member 1302 are schematically shown in FIG. 1, specifically, for example, the configuration shown in FIG. 2 can be adopted.

　図２は、振れ止め部材１３がプローブ本体１１に取り付けられた状態を、該プローブ本体１１の管の長手方向に対して垂直な断面（図１中のA-A断面）で示している。この振れ止め部材１３は、2枚の板材１３０３をそれぞれ、A-A断面においてプローブ本体１１の外面１１３に沿った半円形（部分円形）に曲げた形状を有する半円形部１３０４と、半円の両端からそれぞれ該外面１１３に垂直な方向に突出する突出部１３０５、１３０６とを有する形状に成形したものである。振れ止め部材１３は、これら2枚の板材１３０３の半円形部１３０４を合わせたものが該外面１１３を1周し、一方の板材１３０３の突出部１３０５と他方の板材１３０３の突出部１３０６を重ねるように、プローブ本体１１に取り付けられる。突出部１３０５と突出部１３０６を重ねた部分を針金１３０７で縛ることにより、両板材１３０３は互いに固定される。なお、針金１３０７の代わりにネジや接着剤等を用いて両板材１３０３を互いに固定するようにしてもよい。 FIG. 2 shows a state in which the steady rest member 13 is attached to the probe main body 11 in a cross section perpendicular to the longitudinal direction of the tube of the probe main body 11 (AA cross section in FIG. 1). The steady rest member 13 has a semicircular portion 1304 having a shape in which two plate members 1303 are bent into a semicircular shape (partially circular) along the outer surface 113 of the probe main body 11 in the AA cross section, and from both ends of the semicircle. It is formed into a shape having protrusions 1305 and 1306 protruding in a direction perpendicular to the outer surface 113, respectively. In the steady rest member 13, a combination of the semicircular portions 1304 of these two plate members 1303 goes around the outer surface 113 once, and the protruding portion 1305 of one plate material 1303 and the protruding portion 1306 of the other plate material 1303 overlap each other. It is attached to the probe body 11. Both plate members 1303 are fixed to each other by binding the portion where the protrusion 1305 and the protrusion 1306 are overlapped with the wire 1307. In addition, both plate materials 1303 may be fixed to each other by using a screw, an adhesive or the like instead of the wire 1307.

　これら2枚の板材１３０３のうち、突出部１３０５と突出部１３０６が重ねたものが第１部材１３０１に該当する。このような構成により、第１部材１３０１は、プローブ本体１１の外面１１３の周方向に180°の間隔で2個設けられることになる。これら2個の第１部材１３０１の先端にはそれぞれ、板バネから成る第２部材１３０２が取り付けられている。第２部材１３０２は、該板バネの一部を両板材１３０３の突出部１３０５、１３０６の間に挟むことにより、第１部材１３０１に固定されている。第２部材１３０２には、板材１３０３よりも弾性率が大きい（柔性が高い、剛性が低い）板状部材を用いることができる。あるいは、第１部材１３０１では2枚の板材１３０３が重ねられていることによって、1枚の板材１３０３が第１部材１３０１よりも弾性率が大きく（柔性が高く、剛性が低く）なっていることから、第２部材１３０２には板材１３０３と同種の（同じ弾性率、柔性を有する）1枚の板状部材を用いてもよい。　 Of these two plate members 1303, the one in which the protruding portion 1305 and the protruding portion 1306 are overlapped corresponds to the first member 1301. With such a configuration, two first members 1301 are provided at intervals of 180 ° in the circumferential direction of the outer surface 113 of the probe main body 11. A second member 1302 made of a leaf spring is attached to each of the tips of these two first members 1301. The second member 1302 is fixed to the first member 1301 by sandwiching a part of the leaf spring between the protruding portions 1305 and 1306 of both plate members 1303. As the second member 1302, a plate-shaped member having a higher elastic modulus (higher flexibility and lower rigidity) than the plate member 1303 can be used. Alternatively, in the first member 1301, the two plate members 1303 are overlapped, so that the one plate member 1303 has a higher elastic modulus (higher flexibility and lower rigidity) than the first member 1301. For the second member 1302, one plate-shaped member of the same type as the plate material 1303 (having the same elastic modulus and flexibility) may be used.

(2) 本実施形態のサンプリングプローブの使用方法及び動作
　次に、本実施形態のサンプリングプローブ１０の使用方法及び動作を、図３及び図４を参照しつつ説明する。予め、測定対象の排ガスが流れる煙道９１の壁９１１を貫通するガイドパイプ９２を、一方の端が煙道９１内に、他方の端が煙道９１の外に配置されるように、該壁９１１に取り付けておく。また、該ガイドパイプ９２の、煙道９１の外にある端に、煙道側フランジ９３を取り付けておく。煙道側フランジ９３には、サンプリングプローブ１０のフランジ１２の孔１２２に対応する位置に孔が設けられている。 (2) Usage and operation of the sampling probe of the present embodiment Next, the usage and operation of the sampling probe 10 of the present embodiment will be described with reference to FIGS. 3 and 4. A guide pipe 92 penetrating the wall 911 of the flue 91 through which the exhaust gas to be measured flows is arranged in advance so that one end is inside the flue 91 and the other end is outside the flue 91. It is attached to 911. Further, the flue side flange 93 is attached to the end of the guide pipe 92 outside the flue 91. The flue side flange 93 is provided with a hole at a position corresponding to the hole 122 of the flange 12 of the sampling probe 10.

　ここで、ガイドパイプ９２の長さは、サンプリングプローブ１０の採取口１１１とフランジ１２の煙道９１側の面との距離よりもやや短くしておく。ガイドパイプ９２の内径は、振れ止め部材１３が有する2個の第１部材１３０１の先端同士の距離よりも長く、且つ、これら2個の第１部材１３０１の先端に取り付けられた第２部材１３０２が伸張している状態（無負荷状態）における該第２部材１３０２の先端同士の距離よりも短い範囲内であればよい。ガイドパイプ９２を煙道９１の壁９１１に挿入する位置及び該位置から煙道９１内に挿入する長さは、次に述べるようにサンプリングプローブ１０を設置した状態において採取口１１１が煙道９１内の所定の位置に配置されるように設定する。 Here, the length of the guide pipe 92 is set to be slightly shorter than the distance between the sampling port 111 of the sampling probe 10 and the surface of the flange 12 on the flue 91 side. The inner diameter of the guide pipe 92 is longer than the distance between the tips of the two first members 1301 of the steady rest member 13, and the second member 1302 attached to the tips of these two first members 1301 It may be within a range shorter than the distance between the tips of the second member 1302 in the extended state (no load state). The position where the guide pipe 92 is inserted into the wall 911 of the flue 91 and the length of insertion into the flue 91 from that position are such that the sampling port 111 is inside the flue 91 when the sampling probe 10 is installed as described below. It is set to be placed in a predetermined position.

　次に、プローブ本体１１を、煙道９１の外側にある端からガイドパイプ９２に挿入し、サンプリングプローブ１０のフランジ１２を煙道側フランジ９３にボルトで固定する。これにより、サンプリングプローブ１０は、採取口１１１が煙道９１内の所定の位置に配置され、採取口１１１付近を除いた部分のプローブ本体１１の周囲がガイドパイプ９２に覆われた状態で、煙道９１に取り付けられる。このとき、ガイドパイプ９２の内径が2個の第１部材１３０１の先端同士の距離よりも長く、且つ、伸張している2個の第２部材１３０２の先端同士の距離よりも短い範囲内にあることにより、第２部材１３０２は圧縮された（板バネが曲げられた）状態でガイドパイプ９２の内面に接触する（図４）。このとき、第２部材１３０２が圧縮されることにより、ユーザが用意したガイドパイプ９２の内径やガイドパイプ９２に対するサンプリングプローブ１０の取り付け位置が、分析装置メーカーが想定するものとは多少異なっている場合にも、第２部材１３０２をガイドパイプ９２の内面に接触させることができる。 Next, the probe main body 11 is inserted into the guide pipe 92 from the outer end of the flue 91, and the flange 12 of the sampling probe 10 is bolted to the flue side flange 93. As a result, the sampling probe 10 smokes in a state where the sampling port 111 is arranged at a predetermined position in the flue 91 and the periphery of the probe main body 11 except for the vicinity of the sampling port 111 is covered with the guide pipe 92. It is attached to the road 91. At this time, the inner diameter of the guide pipe 92 is within a range longer than the distance between the tips of the two first members 1301 and shorter than the distance between the tips of the two extended second members 1302. As a result, the second member 1302 comes into contact with the inner surface of the guide pipe 92 in a compressed state (the leaf spring is bent) (FIG. 4). At this time, when the second member 1302 is compressed, the inner diameter of the guide pipe 92 prepared by the user and the mounting position of the sampling probe 10 with respect to the guide pipe 92 are slightly different from those assumed by the analyzer manufacturer. Also, the second member 1302 can be brought into contact with the inner surface of the guide pipe 92.

　以上のようにサンプリングプローブ１０を煙道９１に取り付けた後、ガス測定装置は煙道９１内の排ガスを採取口１１１から採取し、プローブ本体１１の管及び排出口１１２を介して検出器に導入し、排ガスが有する所定の成分の濃度を測定する。この測定は、従来と同様の方法により行うことができるため、詳細な説明を省略する。 After attaching the sampling probe 10 to the flue 91 as described above, the gas measuring device collects the exhaust gas in the flue 91 from the sampling port 111 and introduces it into the detector via the pipe of the probe main body 11 and the discharge port 112. Then, the concentration of a predetermined component contained in the exhaust gas is measured. Since this measurement can be performed by the same method as the conventional method, detailed description thereof will be omitted.

　本実施形態のサンプリングプローブ１０によれば、第２部材１３０２をガイドパイプ９２の内面に接触させることができるため、振れ止め部材１３とガイドパイプ９２の内面との隙間を無くすことができる。これにより、煙道９１内の排ガスの流れによってプローブ本体１１が力を受けても、プローブ本体１１の曲がりや振動が生じ難くなる。そのため、サンプリングプローブ１０の劣化・損傷を抑えることができる。 According to the sampling probe 10 of the present embodiment, since the second member 1302 can be brought into contact with the inner surface of the guide pipe 92, the gap between the steady rest member 13 and the inner surface of the guide pipe 92 can be eliminated. As a result, even if the probe main body 11 receives a force due to the flow of the exhaust gas in the flue 91, the probe main body 11 is less likely to bend or vibrate. Therefore, deterioration / damage of the sampling probe 10 can be suppressed.

　また、振れ止め部材１３がガイドパイプ９２の内面に接触していることでプローブ本体１１に曲がりが生じ難くなることは、プローブ本体１１の剛性が高くなることに相当する。これにより、たとえプローブ本体１１に振動が生じたとしても、振れ止め部材１３が無い場合よりも固有周波数が高くなる。従って、排ガスから受ける力によって共振が生じていた従来のサンプリングプローブに、振れ止め部材１３を付加することにより、振動の周波数が固有周波数からずれるため、共振を防止することができる。 Further, the fact that the steady rest member 13 is in contact with the inner surface of the guide pipe 92 and the probe main body 11 is less likely to bend corresponds to an increase in the rigidity of the probe main body 11. As a result, even if the probe body 11 vibrates, the natural frequency becomes higher than when the steady rest member 13 is not provided. Therefore, by adding the steady rest member 13 to the conventional sampling probe in which resonance is generated by the force received from the exhaust gas, the vibration frequency deviates from the natural frequency, so that resonance can be prevented.

　なお、図３ではガイドパイプ９２をその長手方向が煙道９１の壁９１１に垂直になるように該壁９１１に取り付けた例を示したが、図５に示すように、ガイドパイプ９２の煙道９１内にある端が煙道９１の外にある端よりも下になるようにガイドパイプ９２を傾斜させて該壁９１１に取り付けてもよい。これにより、煙道９１内の排ガスの成分に由来してプローブ本体１１内に付着する液体が排出口１１２を介して検出器側に流入することを防ぐことができる。この場合において、サンプリングプローブ１０の構成を上記のものから変更する必要はない。 Although FIG. 3 shows an example in which the guide pipe 92 is attached to the wall 911 so that its longitudinal direction is perpendicular to the wall 911 of the flue 91, as shown in FIG. 5, the flue of the guide pipe 92 is shown. The guide pipe 92 may be tilted and attached to the wall 911 so that the end inside the 91 is below the end outside the flue 91. As a result, it is possible to prevent the liquid derived from the exhaust gas component in the flue 91 and adhering to the inside of the probe main body 11 from flowing into the detector side through the discharge port 112. In this case, it is not necessary to change the configuration of the sampling probe 10 from the above.

(3) 本実施形態のサンプリングプローブの変形例
　本発明に係るサンプリングプローブは上記の実施形態には限定されず、種々の変形が可能である。以下にいくつかの変形例を示すが、言うまでもなく、本発明は上記実施形態及びこれら変形例には限定されない。 (3) Modification of the sampling probe of the present embodiment The sampling probe according to the present invention is not limited to the above embodiment, and various modifications are possible. Although some modifications are shown below, it goes without saying that the present invention is not limited to the above-described embodiments and these modifications.

　例えば、上述の振れ止め部材１３では、第２部材（板バネ）１３０２の一部を2つの板材１３０３の突出部１３０５、１３０６の間に挟むことにより第１部材１３０１に固定したが、突出部１３０５、１３０６のいずれか一方又は両方に第２部材１３０２の一部を接着、溶接、ネジ止め等によって固定するようにしてもよい。 For example, in the above-mentioned steady rest member 13, a part of the second member (leaf spring) 1302 is fixed to the first member 1301 by sandwiching it between the protruding portions 1305 and 1306 of the two plate members 1303, but the protruding portion 1305 A part of the second member 1302 may be fixed to either one or both of 1306 by adhesion, welding, screwing or the like.

　また、上述の振れ止め部材１３の代わりに、図６に示す振れ止め部材１３１を用いることができる。この振れ止め部材１３１は、2枚の板材１３１３をそれぞれ、図１に示したA-A断面においてプローブ本体１１の外面１１３に沿って半円形に曲げた形状を有する半円形部１３１４と、半円の両端からそれぞれ該外面１１３に垂直な方向に突出する突出部１３１５、１３１６とを有する。振れ止め部材１３１は、これら2枚の板材１３１３の半円形部１３１４を合わせたものが該外面１１３を1周し、一方の板材１３１３の突出部１３１５と他方の板材１３１３の突出部１３１６を重ねるように、プローブ本体１１に取り付けられる。ここまでに述べた点は、上記振れ止め部材１３の構成及び取り付け方法と同様である。但し、図６の振れ止め部材１３１では、板材１３１３の一方の突出部１３１５が他方の突出部１３１６よりも長く、前記外面１１３とは反対側に突出している点で、上記振れ止め部材１３と相違している。従って、一方の板材１３１３の突出部１３１５と他方の板材１３１３の突出部１３１６を重ね合わせると、該突出部１３１５の先端付近は該突出部１３１６とは接していない状態となる。また、振れ止め部材１３１は、板材１３１３とは別体の第２部材を有していない点においても、上記振れ止め部材１３と相違している。この振れ止め部材１３１では、一方の板材１３１３の突出部１３１５と他方の板材１３１３の突出部１３１６が重なっている部分が第１部材１３１１に該当し、突出部１３１５のうち他方の板材１３１３の突出部１３１６とは重ならずにプローブ本体１１とは反対側に突出している部分が第２部材１３１２に該当する。 Further, instead of the above-mentioned steady rest member 13, the steady rest member 131 shown in FIG. 6 can be used. The steady rest member 131 includes a semicircular portion 1314 having a shape in which two plate members 1313 are bent in a semicircular shape along the outer surface 113 of the probe main body 11 in the AA cross section shown in FIG. 1, and both ends of the semicircle. It has protrusions 1315 and 1316 that project in a direction perpendicular to the outer surface 113, respectively. As for the steady rest member 131, a combination of the semicircular portions 1314 of these two plate materials 1313 goes around the outer surface 113 once, and the protruding portion 1315 of one plate material 1313 and the protruding portion 1316 of the other plate material 1313 are overlapped with each other. It is attached to the probe body 11. The points described so far are the same as the configuration and mounting method of the steady rest member 13. However, the steady rest member 131 of FIG. 6 is different from the steady rest member 13 in that one protruding portion 1315 of the plate member 1313 is longer than the other protruding portion 1316 and protrudes to the opposite side to the outer surface 113. doing. Therefore, when the protruding portion 1315 of one plate member 1313 and the protruding portion 1316 of the other plate member 1313 are overlapped with each other, the vicinity of the tip of the protruding portion 1315 is not in contact with the protruding portion 1316. Further, the steady rest member 131 is also different from the steady rest member 13 in that it does not have a second member separate from the plate member 1313. In the steady rest member 131, the portion where the protruding portion 1315 of one plate material 1313 and the protruding portion 1316 of the other plate material 1313 overlap corresponds to the first member 1311, and the protruding portion of the other plate material 1313 of the protruding portions 1315. The portion that does not overlap with 1316 and protrudes to the opposite side of the probe main body 11 corresponds to the second member 1312.

　この変形例の振れ止め部材１３１は、上記実施形態のサンプリングプローブ１０における振れ止め部材１３と同様の方法により、煙道９１に設置することができる（図７参照）。 The steady rest member 131 of this modified example can be installed in the flue 91 by the same method as the steady rest member 13 in the sampling probe 10 of the above embodiment (see FIG. 7).

　上記実施形態のサンプリングプローブ１０では、プローブ本体１１の長手方向の1箇所あたりに振れ止め部材１３を2個設けたが、振れ止め部材１３は最低限1個のみであってもよいし、3個以上設けてもよい。振れ止め部材１３が1個のみの場合には、煙道９１中の排ガスの流れの下流側に振れ止め部材１３が配置されるように、煙道９１に取り付けることにより、排ガスの流れから受ける力によるプローブ本体１１の曲がりを抑えることができる。 In the sampling probe 10 of the above embodiment, two steady rest members 13 are provided at one location in the longitudinal direction of the probe main body 11, but the steady rest member 13 may be at least one or three. The above may be provided. When there is only one steady rest member 13, the force received from the exhaust gas flow by attaching the steady rest member 13 to the flue 91 so that the steady rest member 13 is arranged on the downstream side of the exhaust gas flow in the flue 91. It is possible to suppress the bending of the probe main body 11 due to the above.

　振れ止め部材１３を長手方向の1箇所あたり1個のみ設ける場合には、板材１３０３を半円形に曲げる代わりに全円形に曲げると共に両端をそれぞれプローブ本体１１の外面１１３に垂直な方向に突出させればよい。また、振れ止め部材１３を長手方向の1箇所あたり3個設ける場合には、板材１３０３を部分円形に曲げると共に両端をそれぞれプローブ本体１１の外面１１３に垂直な方向に突出させたものを3個用意し、それら3個の板材１３０３の部分円形を合わせることで1つの円形となるようにすればよい。ここで各板材１３０３の部分円形の角度は120°ずつであってもよいし、板材１３０３毎に異なっていてもよい。振れ止め部材１３を長手方向の1箇所あたり4個以上設ける場合も同様である。 When only one steady rest member 13 is provided for each location in the longitudinal direction, the plate member 1303 is bent into a full circle instead of being bent into a semicircle, and both ends are projected in a direction perpendicular to the outer surface 113 of the probe main body 11. Just do it. Further, when three steady rest members 13 are provided at one location in the longitudinal direction, three plate members 1303 are prepared by bending the plate member 1303 into a partial circle and projecting both ends in a direction perpendicular to the outer surface 113 of the probe main body 11. Then, the partial circles of the three plate members 1303 may be combined to form one circle. Here, the angle of the partial circular shape of each plate material 1303 may be 120 °, or may be different for each plate material 1303. The same applies to the case where four or more steady rest members 13 are provided at one location in the longitudinal direction.

　第２部材には、板バネの代わりに弦巻バネ等の他のバネを用いてもよいし、使用環境における耐熱性を有していればゴム等のバネ以外の弾性体を用いてもよい。 For the second member, another spring such as a string-wound spring may be used instead of the leaf spring, or an elastic body other than the spring such as rubber may be used as long as it has heat resistance in the usage environment.

　上記実施形態のサンプリングプローブ１０では第２部材１３０２を第１部材１３０１の、プローブ本体１１の外面１１３とは反対側に設けたが、図８Ａ及びＢに示す振れ止め部材１３２のように、第１部材１３２１とプローブ本体１１の外面１１３の間に第２部材１３２２を設けてもよい。 In the sampling probe 10 of the above embodiment, the second member 1302 is provided on the side of the first member 1301 opposite to the outer surface 113 of the probe main body 11, but the first member 1302 is like the steady rest member 132 shown in FIGS. 8A and 8B. A second member 1322 may be provided between the member 1321 and the outer surface 113 of the probe body 11.

［態様］
　上述した複数の例示的な実施形態は、以下の態様の具体例であることが当業者により理解される。 [Aspect]
It will be understood by those skilled in the art that the plurality of exemplary embodiments described above are specific examples of the following embodiments.

（第１項）ガイドパイプの中に挿入されるガス測定装置用サンプリングプローブであって、
　管状のプローブ本体と、
　前記プローブ本体の外面に設けられた振れ止め部材とを備え、
　前記振れ止め部材は、第１部材と、前記第１部材に対して直列に配置され、前記第１部材を構成する材料よりも弾性率の大きい第２部材とを有する。 (Clause 1) A sampling probe for a gas measuring device inserted into a guide pipe.
Tubular probe body and
It is provided with a steady rest member provided on the outer surface of the probe body.
The steady rest member has a first member and a second member which is arranged in series with the first member and has a higher elastic modulus than a material constituting the first member.

　第１項に記載のガス測定装置用サンプリングプローブによれば、振れ止め部材が第１部材と共に第１部材よりも弾性率の大きい第２部材を有することから、煙道に設けたガイドパイプの中に挿入して用いる場合に、該ガイドパイプの内径やガイドパイプに対するサンプリングプローブの位置が、分析装置メーカーが想定するものとは多少異なっていても、第２部材が伸縮することにより、振れ止め部材とガイドパイプの内面との隙間を無くすことができる。これにより、様々なガイドパイプに対応することが可能となり、また、排ガスの流れによる曲がりや振動の影響をより一層抑え、サンプリングプローブの劣化を抑えることができる。 According to the sampling probe for a gas measuring device according to the first item, since the steady rest member has a second member having a higher elastic modulus than the first member together with the first member, the inside of the guide pipe provided in the flue Even if the inner diameter of the guide pipe and the position of the sampling probe with respect to the guide pipe are slightly different from those assumed by the analyzer manufacturer, the second member expands and contracts to prevent the steady rest member. It is possible to eliminate the gap between the pipe and the inner surface of the guide pipe. This makes it possible to handle various guide pipes, further suppress the influence of bending and vibration due to the flow of exhaust gas, and suppress deterioration of the sampling probe.

（第２項）他の一態様に係るガス測定装置用サンプリングプローブは、第１項に記載のガス測定装置用サンプリングプローブにおいて、
　前記第１部材は、前記プローブ本体の外面から突出し、
　前記第２部材は、前記プローブ本体を基準として前記第１部材の外側に設けられている。 (Item 2) The sampling probe for a gas measuring device according to another aspect is the sampling probe for a gas measuring device according to the first item.
The first member projects from the outer surface of the probe body and
The second member is provided on the outside of the first member with reference to the probe body.

　第２項に記載のガス測定装置用サンプリングプローブによれば、第２部材よりも弾性率が小さい（硬い）第１部材をプローブ本体側（内側）に設けるため、振れ止め部材をより安定してプローブ本体の外面に保持することができる。 According to the sampling probe for a gas measuring device according to the second item, since the first member having a lower elastic modulus (harder) than the second member is provided on the probe body side (inside), the steady rest member is more stable. It can be held on the outer surface of the probe body.

（第３項）他の一態様に係るガス測定装置用サンプリングプローブは、第２項に記載のガス測定装置用サンプリングプローブにおいて、
　前記第１部材は、前記プローブ本体の外面から突出した2枚の板状の突出部を重ねたものであって、
　前記第２部材は前記2枚の突出部の間に挟んだ板バネである。 (Section 3) The sampling probe for a gas measuring device according to another aspect is the sampling probe for a gas measuring device according to the second aspect.
The first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body.
The second member is a leaf spring sandwiched between the two protruding portions.

　第３項に記載のガス測定装置用サンプリングプローブによれば、2枚の板材から成る突出部、及び板バネという、簡単な構成により振れ止め具を形成することができる。 According to the sampling probe for a gas measuring device described in the third item, a steady rest device can be formed by a simple structure of a protruding portion composed of two plate materials and a leaf spring.

（第４項）他の一態様に係るガス測定装置用サンプリングプローブは、第３項に記載のガス測定装置用サンプリングプローブにおいて、
　前記振れ止め具は2個以上設けられており、
　前記2枚の突出部の一方は、前記外面に沿って曲げられた板材により、他の前記振れ止め具における前記2枚の突出部の一方に接続されている。 (Item 4) The sampling probe for a gas measuring device according to another aspect is the sampling probe for a gas measuring device according to the third item.
Two or more steady rests are provided,
One of the two protrusions is connected to one of the two protrusions in the other steady rest by a plate material bent along the outer surface.

　第４項に記載のガス測定装置用サンプリングプローブによれば、第１部材を構成する2枚の突出部の一方と他の第１部材を構成する2枚の突出部の一方が、プローブ本体の外面に沿って曲げられた板材と共に一体のものとして構成されるため、振れ止め部材の部品の個数を少なくすることができる。 According to the sampling probe for a gas measuring device according to the fourth item, one of the two protrusions constituting the first member and one of the two protrusions constituting the other first member are the probe main body. Since it is configured as an integral part together with the plate material bent along the outer surface, the number of parts of the steady rest member can be reduced.

（第５項）他の一態様に係るガス測定装置用サンプリングプローブは、第２項に記載のガス測定装置用サンプリングプローブにおいて、
　前記第１部材は、前記プローブ本体の外面から突出した2枚の板状の突出部を重ねたものであって、
　前記第２部材は、前記2枚の突出部のうちの一方が他方よりも前記外面とは反対側に突出したものである。 (Item 5) The sampling probe for a gas measuring device according to another aspect is the sampling probe for a gas measuring device according to the second aspect.
The first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body.
In the second member, one of the two projecting portions protrudes from the other on the side opposite to the outer surface.

　第５項に記載のガス測定装置用サンプリングプローブによれば、第１部材を構成する2枚の板材のうちの一方が第２部材を兼ねるため、簡単な構成により振れ止め部材を形成することができる。 According to the sampling probe for a gas measuring device according to the fifth item, since one of the two plate members constituting the first member also serves as the second member, the steady rest member can be formed by a simple configuration. it can.

（第６項）他の一態様に係るガス測定装置用サンプリングプローブは、第５項に記載のガス測定装置用サンプリングプローブにおいて、
　前記振れ止め部材は2個以上設けられており、
　前記2枚の突出部のうちの前記一方は、前記プローブ本体の外面に沿って曲げられた板材により、他の前記振れ止め部材における前記2枚の突出部のうちの前記他方に接続されている。 (Section 6) The sampling probe for a gas measuring device according to another aspect is the sampling probe for a gas measuring device according to the fifth aspect.
Two or more steady rest members are provided.
One of the two protrusions is connected to the other of the two protrusions of the other steady rest member by a plate material bent along the outer surface of the probe body. ..

　第６項に記載のガス測定装置用サンプリングプローブによれば、第１部材を構成する2枚の突出部の前記一方と他の第１部材を構成する2枚の突出部の前記他方が、プローブ本体の外面に沿って曲げられた板材と共に一体のものとして構成されるため、振れ止め部材の部品の個数を少なくすることができる。 According to the sampling probe for a gas measuring device according to the sixth item, the one of the two protrusions constituting the first member and the other of the two protrusions constituting the other first member are probes. Since it is integrated with the plate material bent along the outer surface of the main body, the number of parts of the steady rest member can be reduced.

１０…サンプリングプローブ
１１…プローブ本体
１１１…採取口
１１２…排出口
１１３…プローブ本体の外面
１２…フランジ
１２１…円板
１２２…フランジの孔
１３、１３１、１３２…振れ止め部材
１３０１、１３１１、１３２１…第１部材
１３０２、１３１２、１３２２…第２部材
１３０３、１３１３…板材
１３０４、１３１４…半円形部（部分円形部）
１３０５、１３０６、１３１５、１３１６…突出部
１３０７…針金
９１…煙道
９１１…煙道の壁
９２…ガイドパイプ
９３…煙道側フランジ 10 ... Sampling probe 11 ... Probe body 111 ... Collection port 112 ... Discharge port 113 ... Outer surface of probe body 12 ... Flange 121 ... Disc 122 ... Flange holes 13, 131, 132 ... Steering members 1301, 1311, 1321 ... 1 member 1302, 1312, 1322 ... 2nd member 1303, 1313 ... Plate material 1304, 1314 ... Semi-circular part (partial circular part)
1305, 1306, 1315, 1316 ... Protrusion 1307 ... Wire 91 ... Flue 911 ... Flue wall 92 ... Guide pipe 93 ... Flue side flange

Claims (6)

　ガイドパイプの中に挿入されるガス測定装置用サンプリングプローブであって、
　管状のプローブ本体と、
　前記プローブ本体の外面に設けられた振れ止め部材とを備え、
　前記振れ止め部材は、第１部材と、前記第１部材に対して直列に配置され、前記第１部材を構成する材料よりも弾性率の大きい第２部材とを有する、ガス測定装置用サンプリングプローブ。 A sampling probe for gas measuring devices inserted into a guide pipe.
Tubular probe body and
It is provided with a steady rest member provided on the outer surface of the probe body.
The steady rest member is a sampling probe for a gas measuring device having a first member and a second member arranged in series with the first member and having a elastic modulus larger than that of a material constituting the first member. .. 　前記第１部材は、前記プローブ本体の外面から突出し、
　前記第２部材は、前記プローブ本体を基準として前記第１部材の外側に設けられている、
　請求項１に記載のガス測定装置用サンプリングプローブ。 The first member projects from the outer surface of the probe body and
The second member is provided on the outside of the first member with reference to the probe body.
The sampling probe for a gas measuring device according to claim 1. 　前記第１部材は、前記プローブ本体の外面から突出した2枚の板状の突出部を重ねたものであって、
　前記第２部材は前記2枚の突出部の間に挟んだ板バネである、
　請求項２に記載のガス測定装置用サンプリングプローブ。 The first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body.
The second member is a leaf spring sandwiched between the two protrusions.
The sampling probe for a gas measuring device according to claim 2. 　前記振れ止め部材は2個以上設けられており、
　前記2枚の突出部の一方は、前記外面に沿って曲げられた板材により、他の前記振れ止め部材における前記2枚の突出部の一方に接続されている、
　請求項３に記載のガス測定装置用サンプリングプローブ。 Two or more steady rest members are provided.
One of the two protrusions is connected to one of the two protrusions in the other steady rest member by a plate material bent along the outer surface.
The sampling probe for a gas measuring device according to claim 3. 　前記第１部材は、前記プローブ本体の外面から突出した2枚の板状の突出部を重ねたものであって、
　前記第２部材は、前記2枚の突出部のうちの一方が他方よりも前記外面とは反対側に突出したものである、
　請求項２に記載のガス測定装置用サンプリングプローブ。 The first member is a stack of two plate-shaped protrusions protruding from the outer surface of the probe body.
In the second member, one of the two projecting portions protrudes from the other on the side opposite to the outer surface.
The sampling probe for a gas measuring device according to claim 2. 　前記振れ止め部材は2個以上設けられており、
　前記2枚の突出部のうちの前記一方は、前記プローブ本体の外面に沿って曲げられた板材により、他の前記振れ止め部材における前記2枚の突出部のうちの前記他方に接続されている、
　請求項５に記載のガス測定装置用サンプリングプローブ。 Two or more steady rest members are provided.
One of the two protrusions is connected to the other of the two protrusions of the other steady rest member by a plate material bent along the outer surface of the probe body. ,
The sampling probe for a gas measuring device according to claim 5.
PCT/JP2020/026153 2019-07-17 2020-07-03 Sampling probe for gas measurement device Ceased WO2021010186A1 (en)

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JPS6110741A (en) * 1984-06-26 1986-01-18 Horiba Ltd Sampling pipe
JP2002014017A (en) * 2000-06-28 2002-01-18 New Cosmos Electric Corp Nozzle for gas detector
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