CN101236099A - Integral flux, wind velocity sensor - Google Patents
Integral flux, wind velocity sensor Download PDFInfo
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- CN101236099A CN101236099A CNA2007100539483A CN200710053948A CN101236099A CN 101236099 A CN101236099 A CN 101236099A CN A2007100539483 A CNA2007100539483 A CN A2007100539483A CN 200710053948 A CN200710053948 A CN 200710053948A CN 101236099 A CN101236099 A CN 101236099A
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- flow
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- velocity transducer
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- 230000004907 flux Effects 0.000 title claims description 18
- 239000012530 fluid Substances 0.000 claims abstract description 51
- 230000010355 oscillation Effects 0.000 claims description 35
- 230000006641 stabilisation Effects 0.000 claims description 16
- 238000011105 stabilization Methods 0.000 claims description 16
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052697 platinum Inorganic materials 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract description 2
- 230000003534 oscillatory effect Effects 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000003245 coal Substances 0.000 description 7
- 238000000605 extraction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The invention relates to an integrated flow and wind speed sensor, which is integrally formed by a thermal mass flow sensor and a fluid oscillatory type flow sensor which are in series connection. The integrated flow and wind speed sensor of the invention based on two principles that thermal film platinum resistance turns cold in gas flow and is reduced by resistance, and fluidic flow sensor outputs pulse relative to the gas flow rate when being entered by the gas flow, thereby realizing integral uniformity from the sensor structure. The sensor of the invention is integrally formed by the thermal mass flow sensor and the fluid oscillatory type flow sensor which are in series connection, when the flow is relatively low, the thermal mass flow sensor can be used to measure, when the flow is relatively high, the fluid oscillatory type flow sensor can be switched to perform measuring, the sensor of the invention can measure low-flow just by employing the conventional method, and also can be used to measure high-flow with largely widened measurement range and perfect social and economical benefits.
Description
Technical field
The present invention relates to the employed flow sensor of a kind of mining gas discharging comprehensive parameters analyzer, relate in particular to a kind of integral flux, air velocity transducer with the two principles of hot type jet.
Background technology
Along with the oil and natural gas resource reduces relatively, this traditional energy of coal has obtained attention and widespread use again, and China is the big producing country of a coal, and coal accounts for the proportion more than 70% in primary energy constitutes, in the period of quite growing future, it is stable that this ratio will keep.Ore bed and inside, rock stratum have been gathered a certain amount of methane gas (mainly being the potpourri of gases such as methane, air and carbon dioxide) unevenly in the recovery process of mines such as coal, metal, these gases are extremely dangerous, if extraction is untimely or deal with improperly and can cause fire damp " prominent saturating " and gas explosion, therefore the monitoring to the methane gas extraction is that mine safeties such as coal, metal are produced one of most important project.Along with the continuous exploitation in coal demand increase and colliery, the colliery accident of mine disaster also constantly increases in recent years.The extraction of coal mine gas gas and monitoring are subjected to the great attention of national security superintendent office.China mainly takes the control of fire damp gas at present: carry out extraction in boring of the high-risk district of gas face and pipe laying.It is concrete, and to implement be face to be holed uniformly (pore of hole depth 50-100m diameter 100mm) and gas drainage " son " pipe is installed, the gas drainage that valve of many " son " manifold merga pass is installed in the underworkings then " is propped up " on the pipe, directly discharge atmosphere or fully utilize (natural gas energy resource) by one or more high-power gas suction pump extraction, treat to implement the production exploitation again after the gas drainage totally.Monitoring content to gas drainage comprises: the main parameters such as methane concentration that pipe just " prop up " pipe and every the releasing pipe (" son " pipeline) of holing, gas flow, gaseous tension, gas temperature of taking out wherein belong to the most difficult detection of gas flow.Colliery scene just has up to a hundred " son " pipe at each block face, and the flow of " son " releasing pipe inside and negative pressure fluctuation range big (flow is from 5-500L/min), using the flow sensor of existing single range is accurately to measure so wide fluctuations in discharge scope.Existing flow sensor is commonly used thermal mass flow sensor and fluid oscillation formula flow sensor (as whirlpool joint, jet), the hot type principle is measured flow and is had highly sensitive characteristics, can survey low discharge (flow is at 0-50L/min), but poor to the high flow capacity resolution characteristic.Jet flow sensor then has stable performance, the advantage that measuring accuracy is high, but the higher shortcoming of initial velocity (flow velocity of 1.5m/s) is arranged.Use pipeline flow of the accurate simultaneously measurement of sensor of two different principle, different ranges on technology angle, certain complicacy to be arranged also.
Summary of the invention
The object of the present invention is to provide a kind of test specification wide, the integral flux of applied range, air velocity transducer.
To achieve these goals, technical program of the present invention lies in having adopted a kind of integral flux, air velocity transducer, this sensor is arranged to as a whole by thermal mass flow sensor and fluid oscillation formula flow sensor serial connection.
Described thermal mass flow sensor is arranged on the front portion, and fluid oscillation formula flow sensor is arranged on afterbody, and string is provided with the air inlet current stabilization chamber with air-flow buffer action between the two.
Described thermal mass flow sensor is made of the temperature detecting resistance of installing on admission piece passage and the sidewall thereof and the resistance that tests the speed.
Described fluid oscillation sensor produces chamber, fluid oscillation generation chamber outlet barrier, outlet current stabilization chamber and outlet nozzle by the nozzle that is provided with from A-P, fluid oscillation and forms, wherein, lead to high fluid refracting target post with nozzle over against being provided with in fluid oscillation generation chamber, the vibration fluid point place in the middle of outlet current stabilization chamber is provided with a frequency detecting post.
Described nozzle is the narrow slit structure that a up/down perforation fluid oscillation produces the chamber.
It is the cylindricality cavity identical with the narrow slit direction of nozzle that described fluid oscillation produces the chamber, the narrow slit structure both sides of nozzle are provided with the stream skew wall face of gradually convincing by patient analysis of two symmetries, are provided with the gradually closing jet skew wall face of two symmetries in the preceding both sides of outlet barrier in fluid oscillation generation chamber.
Described water conservancy diversion skew wall face is the gradually open plane of two symmetries.
Described jet skew wall face is the gradually closing plane of two symmetries.
Described fluid baffling target post is an isosceles triangle target post, and the foundation face of isosceles triangle target post is over against the nozzle direction.
The front end of described nozzle is provided with chamfering structure.
Integral flux of the present invention, air velocity transducer be based on the hotting mask platinum resistance in air-flow, turn cold resistance reduce with jet flow sensor in have air-flow to enter time output and these two kinds of principles of the corresponding pulse of gas flow rate, realized incorporate unification from sensor construction.Sensor of the present invention is arranged to as a whole by thermal mass flow sensor and fluid oscillation formula flow sensor serial connection, when flow is low, can use the thermal mass flow sensor to measure; When flow is higher, can switch to fluid oscillation formula flow sensor and measure, sensor of the present invention uses conventional method promptly can measure low discharge, also can be used to measure high flow capacity, and measurement range is broadening greatly, has good economic results in society.In addition, the air inlet current stabilization chamber that is provided with between thermal mass flow sensor and fluid oscillation formula flow sensor has the effect of buffer gas flow, and air-flow can produce stable vibration after through air inlet current stabilization chamber.The present invention is simple in structure, no movable piece, and stable performance, good reproducibility has favorable social and economic worth, is easy to apply.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, integral flux of the present invention, air velocity transducer are arranged to as a whole by thermal mass flow sensor and fluid oscillation formula flow sensor serial connection, wherein, the thermal mass flow sensor is arranged on the front portion, fluid oscillation formula flow sensor is arranged on afterbody, and string is provided with the air inlet current stabilization chamber 4 with air-flow buffer action between the two.The thermal mass flow sensor is made of the thermometric platinum resistance of installing on admission piece passage 1 and the sidewall thereof 2 and the platinum resistance 3 that tests the speed, the fluid oscillation sensor is by the nozzle 5 that is provided with from A-P, fluid oscillation produces chamber 6, fluid oscillation produces chamber outlet barrier 9, outlet current stabilization chamber 11 and outlet nozzle 12 are formed, wherein, in fluid oscillation generation chamber 6, lead to high fluid refracting target post 8 over against being provided with nozzle 5, vibration fluid point place in the middle of outlet current stabilization chamber 11 is provided with a frequency detecting post 10, nozzle 5 is the narrow slit structure that a up/down perforation fluid oscillation produces chamber 6, the front end of nozzle 5 is provided with chamfering structure 13, it is the cylindricality cavity identical with the narrow slit direction of nozzle 5 that fluid oscillation produces chamber 6, the narrow slit structure both sides of nozzle 5 are provided with the stream skew wall face 7 of gradually convincing by patient analysis of two symmetries, be provided with the gradually closing jet skew wall face 14 of two symmetries in the preceding both sides of outlet barrier in fluid oscillation generation chamber 6, wherein, water conservancy diversion skew wall face 7 is the gradually open plane of two symmetries, and jet skew wall face 14 is the gradually closing plane of two symmetries.Fluid baffling target post 8 is an isosceles triangle target post, and the foundation face of isosceles triangle target post is over against the nozzle direction.
During work, when air-flow enters the admission piece passage 1 of integral flux sensor of the present invention, at first through the thermometric platinum resistance 2 installed on its sidewall, platinum resistance 3 tests the speed, because air flow rate difference, it is also different to take away the platinum resistance 3 surperficial heats that test the speed, thermometric platinum resistance 2 is carried out temperature compensation to the platinum resistance 3 that tests the speed after recording admission piece passage 1 gas flow temperature, to adapt to the varying environment temperature.Just can survey low discharge (flow is at 0-50L/min) based on the hotting mask platinum resistance principle that resistance reduces that in air-flow, turns cold, measure but give aft mounted fluid oscillation formula flow sensor greater than the gas air-flow of 50L/min to high flow capacity resolution characteristic difference.Air-flow enters air inlet current stabilization chamber 4 from admission piece passage 1, be ejected on the fluid baffling target post 8 from nozzle 5 after the current stabilization effect through current stabilization chamber 4, produce at fluid baffling target post 8 and fluid oscillation under the acting in conjunction of chamber outlet barrier 9, air-flow can alternately adhere to Liang Bi and be flowing in the fluid that has formed a kind of intrinsic form under the shaping operation that the stream skew wall face 7 of gradually convincing by patient analysis, fluid oscillation produce chamber outlet barrier 9.Fluid has produced swing under action of inertia, and its hunting frequency is directly proportional with flow velocity in quite wide flow range.Air-flow enters frequency detecting post 10 from gradually convincing 7 outflows of stream skew wall face by patient analysis, gives equipment circuit and handle after frequency detecting post 10 detects frequency.Air-flow is finished flow detection from outlet nozzle 12 outflows under the current stabilization effect in outlet current stabilization chamber 11.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, for example thermal mass flow sensor and fluid oscillation formula flow sensor are provided with the change of order and to the change of water conservancy diversion skew wall face and jet skew wall face shape etc., and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. an integral flux, air velocity transducer, it is characterized in that: this sensor is arranged to as a whole by thermal mass flow sensor and fluid oscillation formula flow sensor serial connection.
2. integral flux according to claim 1, air velocity transducer, it is characterized in that: described thermal mass flow sensor is arranged on the front portion, fluid oscillation formula flow sensor is arranged on afterbody, and string is provided with the air inlet current stabilization chamber with air-flow buffer action between the two.
3. integral flux according to claim 1 and 2, air velocity transducer is characterized in that: described thermal mass flow sensor is made of the temperature detecting resistance of installing on admission piece passage and the sidewall thereof and the resistance that tests the speed.
4. integral flux according to claim 1 and 2, air velocity transducer, it is characterized in that: described fluid oscillation sensor produces chamber, fluid oscillation generation chamber outlet barrier, outlet current stabilization chamber and outlet nozzle by the nozzle that is provided with from A-P, fluid oscillation and forms, wherein, lead to high fluid refracting target post with nozzle over against being provided with in fluid oscillation generation chamber, the vibration fluid point place in the middle of outlet current stabilization chamber is provided with a frequency detecting post.
5. integral flux according to claim 4, air velocity transducer is characterized in that: described nozzle is the narrow slit structure that a up/down perforation fluid oscillation produces the chamber.
6. integral flux according to claim 5, air velocity transducer, it is characterized in that: described fluid oscillation produces the chamber and is the cylindricality cavity identical with the narrow slit direction of nozzle, the narrow slit structure both sides of nozzle are provided with the stream skew wall face of gradually convincing by patient analysis of two symmetries, are provided with the gradually closing jet skew wall face of two symmetries in the preceding both sides of outlet barrier in fluid oscillation generation chamber.
7. integral flux according to claim 6, air velocity transducer is characterized in that: described water conservancy diversion skew wall face is the gradually open plane of two symmetries.
8. integral flux according to claim 6, air velocity transducer is characterized in that: described jet skew wall face is the gradually closing plane of two symmetries.
9. according to arbitrary described integral flux, air velocity transducer among the claim 5-8, it is characterized in that: described fluid baffling target post is an isosceles triangle target post, and the foundation face of isosceles triangle target post is over against the nozzle direction.
10. integral flux according to claim 9, air velocity transducer is characterized in that: the front end of described nozzle is provided with chamfering structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100539483A CN101236099A (en) | 2007-02-02 | 2007-02-02 | Integral flux, wind velocity sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100539483A CN101236099A (en) | 2007-02-02 | 2007-02-02 | Integral flux, wind velocity sensor |
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| CN101236099A true CN101236099A (en) | 2008-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100539483A Pending CN101236099A (en) | 2007-02-02 | 2007-02-02 | Integral flux, wind velocity sensor |
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| CN (1) | CN101236099A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750117A (en) * | 2010-03-05 | 2010-06-23 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | High-pressure gas metering device |
| CN102645248A (en) * | 2012-05-18 | 2012-08-22 | 中国计量学院 | Self-correction heat type-precession vortex combined type gas flow measurement method |
| CN103411644A (en) * | 2013-08-13 | 2013-11-27 | 苏州伊玛传感技术科研有限公司 | Probe of thermal type flow sensor |
| CN106136321A (en) * | 2015-03-23 | 2016-11-23 | 纳米新能源（唐山）有限责任公司 | Diaphragm type pneumatic transmitter, airflow treatment device and electronic cigarette |
| WO2017008695A1 (en) * | 2015-07-10 | 2017-01-19 | 中车南京浦镇车辆有限公司 | Flow regulation and stabilization device preventing air flow instability |
| CN107035915A (en) * | 2017-05-19 | 2017-08-11 | 中国水利水电第四工程局有限公司 | A kind of ventilation shaft construction method |
| CN107796456A (en) * | 2017-10-16 | 2018-03-13 | 东南大学 | A kind of wide-range flow sensor and measuring method based on double detection patterns |
| CN110361062A (en) * | 2019-08-28 | 2019-10-22 | 浙江奥新仪表有限公司 | A kind of high maintenance type right angle electromagnetic flowmeter |
| CN112985521A (en) * | 2021-03-25 | 2021-06-18 | 镇江中煤电子有限公司 | Mining pipeline gas flow detection sensor circuit |
-
2007
- 2007-02-02 CN CNA2007100539483A patent/CN101236099A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750117A (en) * | 2010-03-05 | 2010-06-23 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | High-pressure gas metering device |
| CN102645248A (en) * | 2012-05-18 | 2012-08-22 | 中国计量学院 | Self-correction heat type-precession vortex combined type gas flow measurement method |
| CN102645248B (en) * | 2012-05-18 | 2013-10-02 | 中国计量学院 | Self-correction heat type-precession vortex combined type gas flow measurement method |
| CN103411644A (en) * | 2013-08-13 | 2013-11-27 | 苏州伊玛传感技术科研有限公司 | Probe of thermal type flow sensor |
| CN103411644B (en) * | 2013-08-13 | 2016-03-16 | 苏州伊玛传感技术科研有限公司 | A kind of probe of thermal type flow sensor |
| CN106136321A (en) * | 2015-03-23 | 2016-11-23 | 纳米新能源（唐山）有限责任公司 | Diaphragm type pneumatic transmitter, airflow treatment device and electronic cigarette |
| CN106136321B (en) * | 2015-03-23 | 2018-11-20 | 纳米新能源（唐山）有限责任公司 | Diaphragm type pneumatic transmitter, airflow treatment device and electronic cigarette |
| WO2017008695A1 (en) * | 2015-07-10 | 2017-01-19 | 中车南京浦镇车辆有限公司 | Flow regulation and stabilization device preventing air flow instability |
| CN107035915A (en) * | 2017-05-19 | 2017-08-11 | 中国水利水电第四工程局有限公司 | A kind of ventilation shaft construction method |
| CN107796456A (en) * | 2017-10-16 | 2018-03-13 | 东南大学 | A kind of wide-range flow sensor and measuring method based on double detection patterns |
| CN110361062A (en) * | 2019-08-28 | 2019-10-22 | 浙江奥新仪表有限公司 | A kind of high maintenance type right angle electromagnetic flowmeter |
| CN112985521A (en) * | 2021-03-25 | 2021-06-18 | 镇江中煤电子有限公司 | Mining pipeline gas flow detection sensor circuit |
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Effective date of registration: 20080725 Address after: No. 10, Chun Yang Road, hi tech District, Henan, Zhengzhou Applicant after: Guangli Science & Technology Development Co., Ltd., Zhengzhou Address before: No. ten, Chun Yang Road, hi tech District, Henan, Zhengzhou Applicant before: Henan Guangli Science & Technology Co., Ltd. |
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Open date: 20080806 |