CN108389664B - Extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrode - Google Patents
Extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrode Download PDFInfo
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- CN108389664B CN108389664B CN201710943695.0A CN201710943695A CN108389664B CN 108389664 B CN108389664 B CN 108389664B CN 201710943695 A CN201710943695 A CN 201710943695A CN 108389664 B CN108389664 B CN 108389664B
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- 239000012212 insulator Substances 0.000 title claims abstract description 56
- 238000005260 corrosion Methods 0.000 title claims abstract description 30
- 230000007797 corrosion Effects 0.000 title claims abstract description 30
- 239000000725 suspension Substances 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 22
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 130
- 229910052742 iron Inorganic materials 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 239000011368 organic material Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 238000009422 external insulation Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 238000000151 deposition Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000006056 electrooxidation reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
-
- 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
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
- H01B17/10—Fastening of insulator to support, to conductor, or to adjoining insulator by intermediate link
-
- 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
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
-
- 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
- H01B17/52—Insulators or insulating bodies characterised by their form having cleaning devices
- H01B17/525—Self-cleaning, e.g. by shape or disposition of screens
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The invention relates to an extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of a metal electrode, wherein a separated iron cap accessory system is arranged at an iron cap electrode of the insulator, and a steel foot accessory system is arranged at a steel foot electrode; the iron cap accessory system and the steel foot accessory system are respectively in close contact with the lower eave of the iron cap and the part of the steel foot exposed in the air. The separated iron cap accessory system is formed by connecting a left part and a right part in a concave-convex combination mode, wherein the upper surface of the inclined surface is transited from a sine curve to a circular arc curve and then transited to a conical groove and a circular arc groove on the lower surface. The smooth surface of the upper surface of the steel foot accessory system is transited to an elbow, and the elbow is transited to a lower circular arc, a circular raised head, an equipotential surface shape and an upper circular arc. The invention can reduce the possibility of generating leakage current; the external insulation strength of the insulator is effectively improved; can effectively weaken the oxidation effect of ozone; effectively limiting the corrosion of the metal electrode; the assembly is convenient, and the construction is convenient.
Description
Technical Field
The invention relates to an insulator used in a power system, in particular to an extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of a metal electrode.
Background
The method has the advantages that the operators in China are wide, an extra-high voltage transmission line is established, electric energy is safely and reliably transmitted to a load center from a power plant in a long distance, and the method plays an important role in sustainable development and economic high-speed development of electric power resources in China. The extra-high voltage direct current transmission has the advantages of long-distance and large-capacity electric energy transmission, flexible adjustment, low power loss and the like, and has decisive significance in promoting the technical upgrading and sustainable development of the power industry, improving the utilization rate of a transmission corridor, solving the problem of the short-circuit current level of a power grid and the like.
The extra-high voltage direct current transmission project in China starts from a line from Yunnan Chu to Guangzhou in 2010, and when the line is subjected to power failure maintenance in 2011, the metal electrode of the extra-high voltage direct current disc type suspension insulator (see figure 9) is found to gradually corrode. The same situation occurs in other dc transmission projects and in foreign operating practices. For example, in the direct current electric transportation rail of the russian heavy industry, up to 3% of disc-shaped suspension insulators scrapped each year due to corrosion of metal electrodes are used.
According to the research conclusion of related specialists at home and abroad, the main hazard of corrosion of the metal electrode of the disc-type suspension insulator in the power transmission line is to reduce the mechanical strength of the insulator. When the electrode outside the insulator cement is directly corroded, the radius of the insulator electrode is reduced, and the mechanical strength is reduced. When the electrode inside the insulator corrodes, the corrosion product expands, and the generated stress swells the insulator. In either case, the corrosion of the electrodes can greatly affect the mechanical strength of the insulator, and serious accidents such as disconnection and the like occur, which seriously threatens the safe and stable operation of the power system. Therefore, the damage of corrosion of the metal electrode of the insulator must be paid attention, and a method and a way for solving the corrosion problem are proposed.
The main cause of corrosion of the insulator metal electrode is caused by leakage current at its surface; whereas the contamination and moisture of the insulator surface are necessary conditions for generating leakage current; another cause of corrosion of the insulator metal electrode is the generation of ozone by partial discharge in the vicinity of the electrode. The hardware corrosion of disc-shaped suspension insulators typically occurs on the cement-glue surface near the steel feet, and therefore the steel feet are much more severely corroded than the lower edges of the iron caps.
The applicant discloses in insulator capable of reducing corona loss and electromagnetic wave interference and improving corrosion resistance of hardware fittings (Chinese patent number 201410006899.8) that a steel foot accessory system is arranged at a steel foot of a porcelain or glass disk-shaped suspension insulator and/or a iron cap accessory system is arranged at an iron cap. The outer insulating parts of the steel foot accessory system and the iron cap accessory system are hydrophobic, so that the leakage current of the dirty layer on the surface of the insulator is greatly reduced, and the leakage current is further reduced due to the increase of the creepage distance, so that the electrolytic corrosion is effectively limited. In addition, the outer layer parts of the steel foot accessory system and the iron cap accessory system are made of organic materials, so that the pollution flashover voltage of the insulator is improved.
In order to enable the patent to be greatly popularized in practical application, the patent needs to be further perfected and multifunctional, and an extra-high voltage direct current disc type suspension insulator with a separated accessory is provided, and the accessory has the functions of self cleaning, reducing action force of moving charges, being convenient to assemble, being convenient to construct and the like.
Disclosure of Invention
The present invention is directed to the above-described situation, and an object of the present invention is to provide a device capable of reducing the possibility of occurrence of leakage current; the external insulation strength of the insulator is effectively improved; can effectively weaken the oxidation effect of ozone; the ultra-high voltage direct current disc type suspension insulator is convenient to assemble and construct and can inhibit corrosion of the metal electrode.
The invention has the realization mode that the extra-high voltage direct current disc type suspension insulator can inhibit the corrosion of a metal electrode, a separated iron cap accessory system is arranged at an iron cap electrode of the insulator, and a steel foot accessory system is arranged at a steel foot electrode; the iron cap accessory system and the steel foot accessory system are respectively in close contact with the lower eave of the iron cap and the part of the steel foot exposed in the air;
the separated iron cap accessory system is formed by connecting a left part and a right part in a concave-convex combination mode; the upper surface of the inclined surface shape of the separated iron cap accessory system is transited from a sine curve to a circular arc curve, the circular arc curve is transited to a conical groove on the lower surface, and the conical groove is connected with the arc groove;
the upper surface of the steel foot accessory system adopts a smooth surface with an equipotential surface shape to transition to an elbow; the elbow is transited to the lower arc of the lower surface, a circular protruding head is arranged between the upper arc and the lower arc, and an equipotential surface shape is adopted between the upper arc and the circular protruding head.
The invention has the following advantages:
1. the separated iron cap accessory system adopts a concave-convex combined connection mode, so that an insulator does not need to be disassembled during field installation, and the separated iron cap accessory system is convenient to assemble and convenient to construct;
2. the upper surface of the iron cap accessory system adopts an elliptic smooth surface, so that the natural cleaning capability of rainwater is improved, the difficulty degree of depositing dirt substances on the surface of the iron cap accessory system is also increased, and the possibility of generating leakage current is reduced;
3. the lower surface of the iron cap accessory system consists of a convex round shape and a concave round shape, and the surface of the shape can also increase the natural cleaning capability of rainwater and make the dirt substances difficult to deposit on the surface of the iron cap accessory system, so that the possibility of generating leakage current is reduced;
4. the shape design of the upper surface of the iron cap accessory system from a sinusoidal curve to a circular arc curve ensures the uniformity of electric field distribution at the edge of the iron cap accessory system, and effectively improves the external insulation strength of the insulator;
5. the upper surface of the steel foot accessory system, which is not contacted with the original insulator, adopts a smooth surface with an equipotential surface shape, so that the acting force of the charge moving on the surface of the steel foot accessory system can be reduced;
6. the structure of the lower surface of the steel foot accessory system not only increases the creepage distance, but also increases the natural cleaning capability of rainwater, and makes the deposition of the dirt substances on the surface of the steel foot accessory system difficult; the rest of the lower surface adopts an equipotential surface shape, so that the movement of charges on the surface is slowed down;
7. the iron cap accessory system and the steel foot accessory system are respectively in close contact with the lower eave of the iron cap and the part of the steel foot exposed in the air, so that the generation of electrochemical corrosion is effectively weakened;
8. the iron cap accessory system and the steel foot accessory system are respectively and closely contacted with the lower eave of the iron cap and the part of the steel foot exposed in the air, so that the possibility of corona discharge generated by the metal electrode is effectively weakened, and the oxidation effect of ozone is effectively weakened;
9. the steel foot accessory system is closely contacted with the cement adhesive surface near the steel foot, so that the corrosion of the steel foot is effectively limited.
Drawings
Figure 1 is an assembly view of the breakaway iron cap accessory system of the present invention at an iron cap,
figure 2 is a schematic diagram of the separated iron cap accessory system of the present invention,
figure 3 is a schematic diagram of a separate hood accessory system,
FIG. 4 is a schematic view of a right split iron cap accessory system part structure of the present invention
Figure 5 is a right side view of a portion of the construction of the left split hat accessory system of the present invention,
figure 6 is an assembly view of the steel foot accessory system of the present invention at a steel foot,
figure 7 is a schematic view of the steel foot accessory system of the present invention,
figure 8 is an assembly view of the breakaway hat accessory system and steel foot accessory system of the present invention,
fig. 9 is a schematic structural view of an extra-high voltage dc disc-shaped suspension insulator without an accessory system.
Detailed Description
The invention aims to provide an extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of a metal electrode, wherein a separated iron cap accessory system is arranged at an iron cap electrode of the insulator, and a steel foot accessory system is arranged at a steel foot electrode.
The present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a separated iron cap accessory system 1 is arranged at an iron cap 3 of an extra-high voltage direct current disc-shaped suspension insulator, and the insulator is not required to be disassembled when the accessory system 1 is installed on site, so that the assembly is convenient and the construction is convenient.
The lower brim of the iron cap accessory system 1 is tightly contacted, so that the generation of electrochemical corrosion is effectively weakened.
The iron cap accessory system 1 is tightly contacted with the lower eave of the iron cap, so that the possibility of corona discharge generated by the iron cap is effectively weakened, and the oxidation effect of ozone is effectively weakened.
The left iron cap accessory system 1-2 of the split iron cap accessory system 1 is provided with a groove 6, the right iron cap accessory system 1-1 is provided with a convex head 5 matched with the groove, and the convex head is inserted into the groove, and the concave and convex parts of the convex head are combined to form the split iron cap accessory system shown in figure 2.
Referring to fig. 3, the upper surface 7 of the inclined surface shape of the iron cap accessory system is transited from a sine curve 8 to a circular arc curve 9, the circular arc curve transits to a conical groove 10 of the lower surface, and the conical groove is connected with an arc groove 11.
The upper surface inclined plane of the inclined plane shape is 73.5mm in length, and the inclined angle is as follows: 12 °; the arc length of the sinusoidal curve 8 is 26mm, and the radius of the arc curve 9 is 15mm; the tapered slot 10 is 17.5mm wide and 8mm deep, and the radius of the arcuate slot 11 is 13mm.
The main cause of corrosion of the insulator metal electrode is caused by leakage current at its surface. Whereas contamination and moisture of the insulator surface are necessary conditions for generating leakage current. The upper surface 7 of the iron cap accessory system adopts a smooth surface in an inclined surface shape, so that the natural cleaning capability of rainwater is improved, and the difficulty level of depositing dirt substances on the surface of the iron cap accessory system is also increased.
The surface design of the inclined surface shape upper surface 7, the sine curve 8 and the circular arc curve 9 of the upper surface of the iron cap accessory system ensures the uniformity of electric field distribution at the edge of the iron cap accessory system and effectively improves the external insulation strength of the insulator.
The arc curve 9, the conical groove 10 and the arc groove 11 on the lower surface of the iron cap accessory system can also increase the natural cleaning capability of rainwater and make the dirt substances difficult to deposit on the surfaces of the iron cap accessory system.
The iron cap accessory system 1 is made of organic materials and has hydrophobicity, so that the leakage current of a dirty layer on the surface of the insulator is greatly reduced, and the leakage current is further reduced due to the increase of the creepage distance, so that the electrolytic corrosion is effectively limited.
Referring to fig. 6, a steel foot attachment system 2 is provided at the extra-high voltage dc disc suspension insulator steel foot 4. The steel foot accessory system 2 is closely contacted with the part of the steel foot exposed in the air, so that the generation of electrochemical corrosion is effectively weakened. The steel foot accessory system is tightly contacted with the part of the steel foot exposed in the air, so that the possibility of corona discharge generated by the steel foot is effectively weakened, and the oxidation effect generated by ozone is effectively weakened.
Referring to fig. 7, the upper surface of the steel foot accessory system transitions into the elbow 16 with a smooth surface 17 having an equipotential surface shape; the elbow is transited to a lower arc 15 of the lower surface, a circular convex head 14 is arranged between the upper arc 12 and the lower arc, and an equipotential surface shape 13 is adopted between the upper arc and the circular convex head.
The circular convex head 14 has a circular arc radius of 9mm, the upper circular arc 12 has a circular arc radius of 7mm, and the lower circular arc 15 has a circular arc radius of 5mm; the radius of the arc of the elbow 16 is 15mm; the arc length of the equipotential surface shape 13 is 10mm. The arc length of the smooth surface 17 of the upper surface of the steel foot accessory system is 43.5mm.
The surface design of the upper arc 12, the round convex head 14 and the lower arc 15 of the steel foot accessory system not only increases the creepage distance, but also increases the natural cleaning capability for rainwater, and makes the deposition of the dirt substances on the surface of the steel foot accessory system difficult; the elbow 16 facilitates the falling off of rainwater. The equipotential surface shape 13 of the lower surface slows down the movement of charge at this surface.
The steel foot accessory system 2 is made of organic materials and has hydrophobicity, so that the leakage current of a dirty layer on the surface of the insulator is greatly reduced, and the leakage current is further reduced due to the increase of the creepage distance, so that the electrolytic corrosion is effectively limited.
The contoured smooth surface 17 of the upper surface of the steel foot accessory system reduces the force of the moving charge on its surface.
Referring to fig. 8, the invention provides a separate iron cap accessory system 1 at the iron cap electrode 3 of the insulator and a steel foot accessory system 2 at the steel foot electrode 4. The iron cap accessory system and the steel foot accessory system are respectively and closely contacted with the lower eave of the iron cap and the part of the steel foot exposed in the air, so that the possibility of corona discharge generated by the metal electrode is effectively weakened, and the oxidation effect of ozone is effectively weakened;
the steel foot accessory system is closely contacted with the cement adhesive surface near the steel foot, so that the corrosion of the steel foot is effectively limited.
The iron cap accessory system and the steel foot accessory system are made of organic materials, have hydrophobicity, greatly reduce leakage current of a dirty layer on the surface of the insulator, further reduce the leakage current due to the increase of the creepage distance, and effectively limit the generation of electrolytic corrosion.
Claims (5)
1. The extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrodes is characterized in that: a separated iron cap accessory system is arranged at the iron cap electrode of the insulator, and a steel foot accessory system is arranged at the steel foot electrode; the iron cap accessory system and the steel foot accessory system are respectively in close contact with the lower eave of the iron cap and the part of the steel foot exposed in the air;
the separated iron cap accessory system is formed by connecting a left part and a right part in a concave-convex combination mode; the upper surface of the inclined surface shape of the separated iron cap accessory system is transited from a sine curve to a circular arc curve, the circular arc curve is transited to a conical groove on the lower surface, and the conical groove is connected with the arc groove;
the upper surface of the steel foot accessory system adopts a smooth surface with an equipotential surface shape to transition to an elbow; the elbow is transited to the lower arc of the lower surface, a circular protruding head is arranged between the upper arc and the lower arc, and an equipotential surface shape is adopted between the upper arc and the circular protruding head.
2. The extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrodes according to claim 1, wherein the extra-high voltage direct current disc type suspension insulator is characterized in that: bevel shape of the breakaway iron cap accessory system the upper surface bevel is 73.5mm long, bevel angle: 12 °; the arc length of the sine curve is 26mm, and the radius of the arc curve is 15mm; the taper groove is 17.5mm wide and 8mm deep, and the radius of the arc groove is 13mm.
3. The extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrodes according to claim 1, wherein the extra-high voltage direct current disc type suspension insulator is characterized in that: the circular convex head of the steel foot accessory system has a circular arc radius of 9mm, the upper circular arc has a circular arc radius of 7mm, the lower circular arc has a circular arc radius of 5mm, and the elbow has a circular arc radius of 15mm.
4. The extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrodes according to claim 1, wherein the extra-high voltage direct current disc type suspension insulator is characterized in that: the arc length of the equipotential surface shape of the steel foot accessory system is 10mm; the arc length of the smooth surface of the upper surface of the steel foot accessory system was 43.5mm.
5. The extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrodes according to claim 1, wherein the extra-high voltage direct current disc type suspension insulator is characterized in that: the iron cap accessory system and the steel foot accessory system are made of organic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943695.0A CN108389664B (en) | 2017-10-11 | 2017-10-11 | Extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943695.0A CN108389664B (en) | 2017-10-11 | 2017-10-11 | Extra-high voltage direct current disc type suspension insulator capable of inhibiting corrosion of metal electrode |
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| CN108389664A CN108389664A (en) | 2018-08-10 |
| CN108389664B true CN108389664B (en) | 2024-03-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113593912A (en) * | 2020-04-30 | 2021-11-02 | 信纮科技股份有限公司 | Electrode surface treatment method |
| CN113314279B (en) * | 2021-06-08 | 2022-06-10 | 广东电网有限责任公司 | Ground wire insulator electrode fixed ring structure |
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|---|---|---|---|---|
| BR0103967A (en) * | 2000-08-28 | 2002-05-21 | Ngk Insulators Ltd | Suspension insulator |
| JP2005203132A (en) * | 2004-01-13 | 2005-07-28 | Ngk Insulators Ltd | Conductive glazed suspension insulator |
| WO2007082455A1 (en) * | 2006-01-17 | 2007-07-26 | China Southern Power Grid Co., Ltd. Power System Technology Research Center | A ±800kV ULTRAHIGH VOLTAGE DC SYNTHETIC INSULATOR |
| CN102208233A (en) * | 2010-11-30 | 2011-10-05 | 苏州电瓷厂有限公司 | Suspension type porcelain insulator for direct-current overhead power transmission line |
| CN202134293U (en) * | 2011-07-07 | 2012-02-01 | 浙江金利华电气股份有限公司 | Glass insulator of suspension type of dc disc shape |
| CN102522162A (en) * | 2011-12-16 | 2012-06-27 | 湖北鑫德赛绝缘技术有限公司 | Disk-shaped suspension porcelain or glass composite insulator |
| CN103700452A (en) * | 2014-01-07 | 2014-04-02 | 湖北鑫德赛绝缘技术有限公司 | Insulator capable of reducing corona loss and electromagnetic wave interference and improving anticorrosion capability of hardware fittings |
| CN104733137A (en) * | 2015-02-27 | 2015-06-24 | 南方电网科学研究院有限责任公司 | Direct-current disc-shaped suspension-type porcelain and glass insulator for metal-ware corrosion extreme region |
| CN207458685U (en) * | 2017-10-11 | 2018-06-05 | 国家电网公司 | It can inhibit the extra-high voltage direct-current plate-shaped suspension type insulator of metal electrode corrosion |
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2017
- 2017-10-11 CN CN201710943695.0A patent/CN108389664B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0103967A (en) * | 2000-08-28 | 2002-05-21 | Ngk Insulators Ltd | Suspension insulator |
| JP2005203132A (en) * | 2004-01-13 | 2005-07-28 | Ngk Insulators Ltd | Conductive glazed suspension insulator |
| WO2007082455A1 (en) * | 2006-01-17 | 2007-07-26 | China Southern Power Grid Co., Ltd. Power System Technology Research Center | A ±800kV ULTRAHIGH VOLTAGE DC SYNTHETIC INSULATOR |
| CN102208233A (en) * | 2010-11-30 | 2011-10-05 | 苏州电瓷厂有限公司 | Suspension type porcelain insulator for direct-current overhead power transmission line |
| CN202134293U (en) * | 2011-07-07 | 2012-02-01 | 浙江金利华电气股份有限公司 | Glass insulator of suspension type of dc disc shape |
| CN102522162A (en) * | 2011-12-16 | 2012-06-27 | 湖北鑫德赛绝缘技术有限公司 | Disk-shaped suspension porcelain or glass composite insulator |
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| CN104733137A (en) * | 2015-02-27 | 2015-06-24 | 南方电网科学研究院有限责任公司 | Direct-current disc-shaped suspension-type porcelain and glass insulator for metal-ware corrosion extreme region |
| CN207458685U (en) * | 2017-10-11 | 2018-06-05 | 国家电网公司 | It can inhibit the extra-high voltage direct-current plate-shaped suspension type insulator of metal electrode corrosion |
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| CN108389664A (en) | 2018-08-10 |
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