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WO2018150671A1 - Isolateur hydrofuge - Google Patents

Isolateur hydrofuge Download PDF

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Publication number
WO2018150671A1
WO2018150671A1 PCT/JP2017/042052 JP2017042052W WO2018150671A1 WO 2018150671 A1 WO2018150671 A1 WO 2018150671A1 JP 2017042052 W JP2017042052 W JP 2017042052W WO 2018150671 A1 WO2018150671 A1 WO 2018150671A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
insulator
repellent
electron
glaze layer
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/JP2017/042052
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English (en)
Japanese (ja)
Inventor
邦明 近藤
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Publication of WO2018150671A1 publication Critical patent/WO2018150671A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/652—Chromium, molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/86—Glazes; Cold glazes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/50—Insulators or insulating bodies characterised by their form with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like

Definitions

  • the present invention relates to a water-repellent insulator made of porcelain with improved antifouling properties.
  • “garbage” includes a garment tube.
  • the insulator and insulator tube surfaces are covered with ice and snow, and as above, the electrical insulation characteristics deteriorate, and the ice and snow that has landed and snowed fall down to the structure directly below. In some cases, damage may occur, such as damage, noise at the time of falling, or contact with a person and suffering damage.
  • Patent Document 1 the insulator surface is periodically washed to remove the contaminated material.
  • an insulator cleaning device can be installed at a substation or the like, but it is difficult to clean the insulator on the transmission line tower.
  • Patent Document 2 a fluororesin, a silicone resin, or the like is applied to the surface of the insulator to prevent fouling from adhering.
  • these organic substances are inevitably deteriorated due to ultraviolet rays, and there is a problem in the durability of the effect.
  • a process of further applying a resin or the like to the surface of the completed insulator and drying it is necessary the process is complicated and the cost is increased.
  • an object of the present invention is to provide a water-repellent insulator that can solve the above-mentioned problems of the prior art and can maintain a semi-permanently excellent electrical insulation characteristic and non-icing and snow characteristic without performing insulator cleaning. It is.
  • the water-repellent insulator of the present invention made to solve the above-mentioned problems is characterized in that a water-repellent glaze layer is formed on the surface of a porcelain insulator body.
  • the water repellent glaze layer is preferably a glaze layer containing a charge transfer catalyst, and the charge transfer catalyst comprises an electron donating element, an electron accepting element, and an electron donating element to an electron.
  • the charge transfer catalyst comprises an electron donating element, an electron accepting element, and an electron donating element to an electron.
  • the composite oxide crystal is preferable.
  • the water-repellent glaze layer can be formed in an annular shape on the surface of the hydrophilic glaze layer applied to the surface of the porcelain insulator body.
  • the insulator body is a hanging insulator, and the water repellent glaze layer may be formed in a ring shape on the back surface thereof, or the water repellent glaze layer may be formed in a ring shape on the upper surface thereof. it can.
  • the insulator body is a long insulator, and the water-repellent glaze layer is formed on the entire surface. In any case, it is desirable to form the water repellent glaze layer in an annular shape with a width of 50% or more of the surface leakage distance of the insulator.
  • the water-repellent insulator of the present invention has a water-repellent glaze layer formed on the surface of a porcelain insulator body. Therefore, the water-repellent insulator is excellent in water repellency on the surface, resulting in fine water droplets dispersed even when rainwater or condensation adheres. A continuous fouling film is not formed. For this reason, even if it does not perform an insulator washing
  • the water-repellent glaze layer in an annular shape, so that, for example, there is a water-repellent layer on the way wherever leakage current passes from the cap to the pin of the suspension, so that the electrical insulation characteristics can be maintained. it can.
  • the water-repellent glaze layer does not deteriorate unlike organic materials such as silicone rubber, has a semi-permanent lifetime, and can be applied in the same process as before, making the manufacturing process complicated. I don't have to.
  • 1 is a cross-sectional view showing a suspension garment according to a first embodiment of the present invention. It is sectional drawing which shows the modification of 1st Embodiment. It is sectional drawing which shows the other modification of 1st Embodiment. It is sectional drawing which shows the long stem insulator which is the 2nd Embodiment of this invention. It is a photograph which shows the surface state of the sample 0 in a water repellency test. It is a photograph which shows the surface state of the sample 1 in a water repellency test. It is a photograph which shows the surface state of the sample 2 in a water repellency test. It is a photograph which shows the surface state of the sample 3 in a water repellency test.
  • FIG. 1 is a cross-sectional view showing a suspended insulator according to the first embodiment.
  • Reference numeral 1 denotes a porcelain insulator body.
  • the suspension insulator body 1 includes a plurality of annular ribs 2 on the back surface.
  • a cap fitting 4 is fixed to the head 3 formed at the center of the upper surface with cement 5.
  • a pin fitting 6 is fixed with cement 5 at the center of the back surface.
  • a water repellent glaze layer 7 is formed over the entire surface of the insulator body 1.
  • glazes are applied to porcelain insulators, but as described above, conventional glazes are hydrophilic glazes.
  • a water-repellent glaze is used in the present invention.
  • the water-repellent glaze layer 7 is formed in an annular shape between the cap metal fitting 4 and the pin metal fitting 6 so that the leakage current flows through any path between the cap metal fitting 4 and the pin metal fitting 6.
  • the water-repellent glaze layer 7 is interposed between them.
  • the water-repellent glaze layer 7 includes a charge transfer catalyst in the glaze layer.
  • the charge transfer catalyst is a catalyst made of a composite oxide that undergoes an oxidation reaction and / or a reduction reaction by charge transfer in the catalyst, and is patented as Japanese Patent No. 3514702.
  • a cathode and an anode are formed in the form of long-distance polarization in one crystal structure, and reduction is performed at the cathode and oxidation is performed at the anode.
  • the crystal structure is a perovskite type, an electron donating element, an electron carrier element that promotes the movement of electrons from the electron donating element to the electron accepting element, a reducing center element that performs a reduction reaction by the electrons transferred to the electron accepting element, It consists of a complex oxide crystal with an oxidation center element that undergoes an oxidation reaction by holes of an electron donating element generated by electron transfer.
  • an oxidation activator and a reduction activator are included.
  • the electron donating element is molybdenum or tungsten
  • the electron accepting element is aluminum
  • the electron carrier element is zirconium
  • the reducing center element is palladium
  • the oxidation center element is platinum
  • the oxidation activator is lithium.
  • the reduction activator is an oxide of yttrium.
  • the water repellent glaze layer 7 is obtained.
  • the contact angle when water droplets were dropped on the water repellent glaze layer 7 was 100 ° or more, and it was confirmed that the contact angle of the usual insulator glaze was 50 ° or less, but the water repellency was excellent. . For this reason, even when rainwater or dew condensation adheres to the water-repellent glaze layer 7, it only becomes fine dispersed water droplets, and a continuous fouling film as in the prior art is not formed.
  • the insulating properties are maintained at a level comparable to clean conditions.
  • the thickness of the glaze layer in the insulator is about 400 ⁇ m.
  • the charge transfer catalyst described above has a small specific gravity, so it collects on the surface of the molten glaze, decomposes the fouling material and exhibits a self-cleaning effect. Excellent water repellency.
  • the water-repellent glaze layer 7 can be formed on the surface of the insulator body 1 in the same process as before.
  • the water-repellent glaze layer 7 can be formed by spraying a glaze containing a charge transfer catalyst after spraying and firing a normal glaze for ordinary insulators and baking it again. In this case, firing is required twice.
  • the porcelain constituting the insulator body 1 and the normal hydrophilic insulator glaze have a good balance of compressibility, the water-repellent glaze layer 7 is cracked during firing. There is an advantage that can be prevented from entering.
  • the water-repellent glaze layer 7 is formed on the entire surface of the suspension insulator body 1 and the back surface.
  • the electrical insulation characteristics of the insulator without maintaining the insulator cleaning are maintained at a level comparable to the cleaning condition.
  • the water-repellent glaze layer 7 does not deteriorate unlike an organic substance and has an advantage of having a semi-permanent lifetime.
  • the water-repellent glaze layer 7 can be formed only on the upper surface of the hanging insulator body 1.
  • the part where the contaminated material is likely to adhere is the surface above the back surface. Therefore, if a continuous fouling film is prevented from being formed on this surface, the electrical insulation characteristics are prevented from deteriorating. be able to.
  • the water-repellent glaze layer 7 can also be formed only on the back surface of the suspension insulator main body 1 on which the annular rib 2 is formed.
  • the surface leakage distance of the suspension is larger on the back surface with the ribs 2 than on the smooth surface. Therefore, if a water-repellent glaze layer 7 is formed on the back surface side to prevent a continuous fouling film from being formed, It is possible to prevent the deterioration of the insulation characteristics more reliably.
  • the cost can be reduced as compared with the case where the water-repellent glaze layer 7 is formed on the entire surface as shown in FIG. Can be achieved.
  • the width of the water repellent glaze layer 7 is narrowed, the effect of the present invention is reduced. Therefore, the width of the water repellent glaze layer 7 is preferably 50% or more of the surface leakage distance of the insulator. In any case, the water repellent glaze layer 7 is formed in a ring shape.
  • the insulator is a hanging insulator, but the shape of the insulator is not limited to this, and for example, as in the second embodiment shown in FIG.
  • the water-repellent glaze layer 7 can also be formed.
  • the water-repellent glaze layer 7 is formed on both the front and back surfaces of a large number of shades 9.
  • the water-repellent glaze layer 7 is formed only on the upper surface or only on the lower surface. Also good.
  • the present invention can be applied to various insulators such as a pin insulator, a line post insulator, an insulator tube, and a bushing.
  • insulators such as a pin insulator, a line post insulator, an insulator tube, and a bushing.
  • glass made of tempered glass can be applied to the surface of insects.
  • the test procedure is as follows. First, four types of water-repellent glazes were prepared by adding the above-described charge transfer catalyst in the ratios shown in Table 1 to the glazes for porcelain insulators used in the past (average). Mixing was sufficiently performed using a homogenizer. The mixing ratio of the charge transfer catalyst was 4 parts by mass, 8 parts by mass, and 16 parts by mass with respect to 100 parts by mass of the glaze for the insulator.
  • a flat test piece (size: 125 ⁇ 36 ⁇ 11 mm, unfired) made of a porcelain raw material having the same composition as the porcelain insulator was prepared, and the above-described four types of glaze were applied to the surface.
  • the glazing was performed by dipping the test piece into the glaze for 10 seconds, and the thickness was about 0.45 mm.
  • a sample (sample No. 0) in which a silicone rubber film conventionally used for insulators was formed on the surface of the test piece was also prepared.
  • the glaze no Further, glaze No. 2 and glaze no. Samples with spray coating of the glaze of No. 4 were prepared. 5 and sample no. It was set to 6. Thereafter, each sample was peeled off and fired at 1300 ° C. in a baking furnace.
  • each fired sample is a simulation of the insulator surface.
  • Water in which abrasive powder was dispersed was sprayed on the surface of each sample, and the water repellency was visually observed.
  • the abrasive powder is used to make it easy to visually observe water droplets and a water film on the sample surface, and does not affect water repellency.
  • Table 2 The surface states of Sample 0 to Sample 6 are shown in the photographs in FIGS.
  • the effect of improving the fouling withstand voltage according to the present invention can be confirmed by performing an artificial fouling AC voltage test based on JEC-0201-1988 “AC voltage insulation test” and using a test method in fixed mist. Since polymer insulators using silicone rubbers having a higher resistance to fouling than porcelain insulators when evaluated in this test method, even in the case of water repellent insulators having the same level of water repellency, the same high fouling is obtained. It can be expected to show a withstand voltage characteristic.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Insulators (AREA)
  • Catalysts (AREA)

Abstract

La présente invention concerne un isolateur hydrofuge à très longue durée de vie qui est obtenu en formant une couche d'émail hydrofuge (7) sur la surface d'un corps d'isolateur (1) en porcelaine. Cette couche d'émail hydrofuge (7) contient un catalyseur de type à transfert de charge. Le catalyseur de type à transfert de charge comprend de préférence un cristal d'oxyde composite formé de : un élément donneur d'électrons ; un élément récepteur d'électrons ; un élément de transport d'électrons qui favorise le transfert d'électrons de l'élément donneur d'électrons à l'élément récepteur d'électrons ; un élément central de réduction qui effectue une réaction de réduction en utilisant l'électron transféré à l'élément récepteur d'électrons ; et un élément central d'oxydation qui effectue une réaction d'oxydation en utilisant un trou d'électrons formé du fait du transfert de l'électron.
PCT/JP2017/042052 2017-02-15 2017-11-22 Isolateur hydrofuge Ceased WO2018150671A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-025648 2017-02-15
JP2017025648A JP2020080203A (ja) 2017-02-15 2017-02-15 撥水性がいし

Publications (1)

Publication Number Publication Date
WO2018150671A1 true WO2018150671A1 (fr) 2018-08-23

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ID=63169267

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/042052 Ceased WO2018150671A1 (fr) 2017-02-15 2017-11-22 Isolateur hydrofuge

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JP (1) JP2020080203A (fr)
WO (1) WO2018150671A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04169009A (ja) * 1990-11-01 1992-06-17 Chubu Electric Power Co Inc 撥水性碍子
JPH04171615A (ja) * 1990-11-02 1992-06-18 Chubu Electric Power Co Inc 碍子
JPH04171616A (ja) * 1990-11-02 1992-06-18 Chubu Electric Power Co Inc 碍子及びその製造方法
JPH07272576A (ja) * 1994-03-28 1995-10-20 Ngk Insulators Ltd 撥水性碍子
JP2002001121A (ja) * 2000-06-23 2002-01-08 Fuairatsuku Internatl Kk 電荷移動型触媒、該触媒を利用した酸化還元機能材及び電荷移動型触媒含有材
WO2008143068A1 (fr) * 2007-05-14 2008-11-27 Kazufumi Ogawa Isolant contre le givrage et l'accrétion de neige, câble électrique et antenne, leur procédé de fabrication, et tour de ligne de transmission les utilisant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04169009A (ja) * 1990-11-01 1992-06-17 Chubu Electric Power Co Inc 撥水性碍子
JPH04171615A (ja) * 1990-11-02 1992-06-18 Chubu Electric Power Co Inc 碍子
JPH04171616A (ja) * 1990-11-02 1992-06-18 Chubu Electric Power Co Inc 碍子及びその製造方法
JPH07272576A (ja) * 1994-03-28 1995-10-20 Ngk Insulators Ltd 撥水性碍子
JP2002001121A (ja) * 2000-06-23 2002-01-08 Fuairatsuku Internatl Kk 電荷移動型触媒、該触媒を利用した酸化還元機能材及び電荷移動型触媒含有材
WO2008143068A1 (fr) * 2007-05-14 2008-11-27 Kazufumi Ogawa Isolant contre le givrage et l'accrétion de neige, câble électrique et antenne, leur procédé de fabrication, et tour de ligne de transmission les utilisant

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