CN113936869B - Pollution-proof and icing-proof suspension porcelain insulator and preparation method thereof - Google Patents
Pollution-proof and icing-proof suspension porcelain insulator and preparation method thereof Download PDFInfo
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- CN113936869B CN113936869B CN202111023705.1A CN202111023705A CN113936869B CN 113936869 B CN113936869 B CN 113936869B CN 202111023705 A CN202111023705 A CN 202111023705A CN 113936869 B CN113936869 B CN 113936869B
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- umbrella skirt
- steel
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- 239000012212 insulator Substances 0.000 title claims abstract description 104
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 15
- 239000000725 suspension Substances 0.000 title claims description 12
- 238000002360 preparation method Methods 0.000 title claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000004568 cement Substances 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 20
- 230000001070 adhesive effect Effects 0.000 claims abstract description 20
- 230000015556 catabolic process Effects 0.000 claims abstract description 7
- 230000006378 damage Effects 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 19
- 239000006004 Quartz sand Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- 229920005646 polycarboxylate Polymers 0.000 claims description 5
- 239000003469 silicate cement Substances 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 3
- 239000010433 feldspar Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 4
- 210000003608 fece Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
-
- 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
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Insulators (AREA)
Abstract
The invention discloses a pollution-preventing and ice-coating-preventing suspended porcelain insulator, which comprises an insulator body, wherein an upper umbrella skirt and a lower umbrella skirt are correspondingly arranged outside the insulator body, the diameter of the upper umbrella skirt is larger than that of the lower umbrella skirt, and the numerical value is not smaller than 100mm; the insulator body is externally and integrally coated with a glaze layer of self-cleaning glaze; a steel cap is arranged at the upper end part of the insulator body, and the steel cap and the insulator body are fixed by cement glue; the steel feet are correspondingly arranged in the insulator body, and the steel feet and the insulator body are also twisted and fixed through cement adhesive, so that the integral insulator is formed. The invention can effectively increase the mechanical strength of the insulator body, so that the nominal creepage distance of the whole insulator is not less than 400mm, the tensile electromechanical damage load is 70kN, the effective value of the power frequency breakdown voltage is not less than 120kV, the effective value of the power frequency wet lightning voltage is not less than 45kV, the effective value of the power frequency dry lightning voltage is not less than 90kV, and the parameter design of the insulator in the prior art is far exceeded.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a pollution-preventing and ice-coating-preventing suspended porcelain insulator and a preparation method thereof.
Background
In the prior art, an insulator is the most commonly used equipment in the power industry, is mainly used for being erected on a telegraph pole and is used for one end of a high-voltage wire connecting tower, a large umbrella skirt and other structures are required to be arranged on an insulator body in order to achieve the required performance and the like, the insulator in the prior art is generally as large as an upper umbrella and a lower umbrella, in the area with serious icing and bird droppings, the insulator strings are easy to ice and connected in series, and short circuits and pollution flashovers are caused by the bird droppings falling on different umbrellas, so that the prior preparation method and the structure are still greatly deficient.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a pollution-proof and ice-proof suspension porcelain insulator and a preparation method thereof.
The technical scheme is as follows: the invention adopts the technical scheme that: the suspended porcelain insulator comprises an insulator body, wherein an upper umbrella skirt and a lower umbrella skirt are correspondingly arranged outside the insulator body, the diameter of the upper umbrella skirt is larger than that of the lower umbrella skirt, and the value of the upper umbrella skirt is not smaller than 100mm; the insulator body is externally and integrally coated with a glaze layer of self-cleaning glaze; a steel cap is arranged at the upper end part of the insulator body, and the steel cap and the insulator body are fixed through cement adhesive; the steel feet are correspondingly arranged in the insulator body, and the steel feet and the insulator body are also twisted and fixed through cement adhesive, so that the integral insulator is formed; the nominal creepage distance of the integral insulator is not less than 400mm, the tensile electromechanical damage load is 70kN, the effective value of the power frequency breakdown voltage is not less than 120kV, the effective value of the power frequency wet lightning voltage is not less than 45kV, the effective value of the power frequency dry lightning voltage is not less than 90kV, and the rated voltage is 25kV.
Further, a vertical downward locking pin is also arranged in the steel cap, and the steel cap and the insulator body are fixedly arranged into a whole from the upper end of the locking pin.
Further, a gasket is further arranged at the upper end part of the steel foot, the gasket is also fixed by cement adhesive, and the locking pin is a 16W locking pin.
Further, the upper end face and the lower end face of the upper umbrella skirt and the lower umbrella skirt are also provided with glaze-immersed long grooves, the glaze-immersed long grooves at the upper end face and the lower end face of the same umbrella skirt are arranged in a staggered mode, the upper end face and the lower end face of the glaze layer are correspondingly arranged to be planar, and the vertical section of the glaze-immersed long grooves is arranged to be of a semicircular shape structure.
Further, the thickness of the glaze layer on the insulator body is set to be 2mm-4mm; the outer diameter of the upper umbrella skirt is set to be 360mm, and the outer diameter of the lower umbrella skirt is set to be 255mm.
Further, the insulator body is made of industrial alumina, quartz sand, feldspar and clay.
The invention also provides a preparation method of the pollution-proof and ice-proof suspension porcelain insulator, which comprises the following steps:
1) Preparing an insulator body: placing industrial alumina, quartz sand, rubber particles and ceramic particles into a stirring device for stirring uniformly, wherein the materials account for the mass percent of the total amount: 5-15% of industrial alumina, 15-35% of quartz sand, 20-40% of feldspar and 30-50% of clay, and forming by mixing ball milling and rotary blank forming, and sintering at a high temperature of 1200-1300 ℃ to form the high-strength alumina suspension porcelain insulator.
2) Drying a semi-finished insulator body in a shade drying and drying mode, machining a plurality of vertically staggered glaze soaking long grooves on the upper umbrella skirt and the upper and lower end faces of the lower umbrella skirt of the insulator body through machining equipment, immersing the whole insulator body in a glaze pool through hoisting equipment, stirring and glazing by a stirring mechanism arranged in the glaze pool, hoisting the insulator body for standing after glazing is finished, scraping redundant glaze by a glaze scraping equipment or sponge when a glaze layer is softer, enabling the thickness of a surface glaze layer to be consistent, and drying to obtain a finished product;
3) According to the size of the insulator body, preparing corresponding steel caps, steel feet, gaskets and the like, and preparing cement adhesive, wherein the cement adhesive is mainly prepared from the following components in parts by weight: 45-50 parts of silicate cement, 23-52 parts of quartz sand, 5-10 parts of sulphoaluminate cement, 0.1-1 part of polycarboxylate water reducer, 1-3 parts of fly ash, 10-30 parts of water and 0.1-1 part of thickener; and respectively installing an external steel cap, an internal gasket and a steel foot through cement adhesive, and finally fixing the locking pin.
Further, the density of the insulator body is 2.50-2.70g/cm 3 。
The beneficial effects are that: compared with the prior art, the invention has the following advantages:
1) According to the invention, the insulator body is provided with the upper umbrella skirt and the lower umbrella skirt, the insulator body is respectively fixedly provided with the outer steel cap and the inner steel foot through the special cement adhesive, so that the phenomena of unstable bonding and layering are prevented, the upper end surfaces and the lower end surfaces of the upper umbrella skirt and the lower umbrella skirt are also provided with the glaze-immersed long grooves, the glaze-immersed long grooves are arranged on the upper side and the lower side of the umbrella skirt in a staggered manner, the contact surface between a glaze layer and the umbrella skirt can be effectively increased, the attaching effect of the glaze layer is improved, and the device has good antifouling and decontamination effects;
(2) The insulator is designed to be 360mm in diameter of a large umbrella, 255mm in diameter of a small umbrella and capable of effectively shielding bird droppings and preventing icing bridging, so that the nominal creepage distance of the whole insulator is not less than 400mm, the tensile electromechanical damage load is 70kN, the effective value of power frequency breakdown voltage is not less than 120kV, the effective value of power frequency wet lightning voltage is not less than 45kV, the effective value of power frequency dry lightning voltage is not less than 90kV, and the parameter design of the insulator in the prior art is far exceeded.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is a block diagram of an elongated slot for glazing according to the present invention.
Detailed Description
The invention will be further illustrated by the following drawings and specific examples, which are carried out on the basis of the technical solutions of the invention, it being understood that these examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and 2, the insulator of the embodiment comprises an insulator body 1, wherein an upper umbrella skirt 2 and a lower umbrella skirt 3 which correspond to each other are arranged outside the insulator body 1, and a glaze layer 4 of self-cleaning glaze is integrally coated outside the insulator body 1; a steel cap 5 is arranged at the upper end part of the insulator body 1, and the steel cap 5 and the insulator body 1 are glued and fixed through cement glue 6; the steel feet 7 are correspondingly arranged in the insulator body 1, and the steel feet 7 and the insulator body 1 are also twisted and fixed through cement adhesive 6, so that the integral insulator is formed.
A locking pin 8 which is vertically downward is also arranged in the steel cap 5, and the locking pin 8 is used for fixing the steel cap 5 and the insulator body 1 into a whole from the upper end; the upper end of the steel foot 7 is also provided with a spacer 9, which spacer 9 is likewise fixed by the cement glue 6, and the locking pin 8 is provided as a 16W locking pin 8.
The upper end face and the lower end face of the upper umbrella skirt 2 and the lower umbrella skirt 3 are also provided with glaze-immersed long grooves 10, the glaze-immersed long grooves 10 at the upper end face and the lower end face of the same umbrella skirt are arranged in a staggered mode, the upper end face and the lower end face of the glaze layer 4 are correspondingly arranged in a plane shape, and the vertical section of the glaze-immersed long grooves 10 is arranged in a semicircular shape structure; the thickness of the glaze layer 4 on the insulator body 1 is set to be 2mm-4mm; the outer diameter of the upper shed 2 is set to 360mm, and the outer diameter of the lower shed 3 is set to 255mm.
The insulator body 1 is made of industrial alumina, quartz sand, rubber particles and ceramic particles; the nominal creepage distance of the integral insulator is not less than 400mm, the tensile electromechanical damage load is 70kN, the effective value of the power frequency breakdown voltage is not less than 120kV, the effective value of the power frequency wet lightning voltage is not less than 45kV, the effective value of the power frequency dry lightning voltage is not less than 90kV, and the rated voltage is 25kV.
The preparation method of the insulator of the embodiment comprises the following steps:
1) Preparing an insulator body: placing industrial alumina, quartz sand, rubber particles and ceramic particles into a stirring device for stirring uniformly, wherein the materials account for the mass percent of the total amount: 10% of industrial alumina, 20% of quartz sand, 30% of rubber particles and 40% of ceramic particles, adding water accounting for 10% of the total weight into a stirrer, and stirring for 1-2 hours to obtain mud cakes, wherein the density of the insulator body is 2.00-2.40g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the finished insulator body through die equipment;
2) Drying a semi-finished insulator body in an electric shade drying and drying mode, machining a plurality of vertically staggered glaze soaking long grooves on the upper end face and the lower end face of an upper umbrella skirt and a lower umbrella skirt of the insulator body through machining equipment, immersing the whole insulator body in a glaze pool through hoisting equipment, stirring and glazing by a stirring mechanism arranged in the glaze pool, hoisting the insulator body for standing after glazing is finished, scraping redundant glaze through a glaze scraping equipment or sponge when a glaze layer is softer, enabling the thickness of a surface glaze layer to be consistent, and drying to obtain a finished product;
3) According to the size of the insulator body, preparing corresponding steel caps, steel feet, gaskets and the like, and preparing cement adhesive, wherein the cement adhesive is mainly prepared from the following components in parts by weight: 48 parts of silicate cement, 43 parts of quartz sand, 7 parts of sulphoaluminate cement, 0.5 part of polycarboxylate water reducer, 2 parts of fly ash, 20 parts of water and 0.5 part of thickener; and respectively installing an external steel cap, an internal gasket and a steel foot through cement adhesive, and finally fixing the locking pin.
The properties of the insulators obtained by the method of the present embodiment are compared with those of the insulators of the conventional art as shown in table 1,
| example 1 | Example 2 | Example 3 | |
| Nominal creepage distance | 425mm | 406mm | 414mm |
| Tensile electromechanical failure load | 90kN | 80kN | 86kN |
| Effective value of power frequency breakdown voltage | 138KV | 128KV | 133KV |
| Effective value of power frequency wet lightning voltage | 60KV | 51KV | 58KV |
TABLE 1
Example 2
The difference between this example and example 1 is that, when the insulator body is prepared, the mass percentages of the materials in the total amount are: industrial alumina 5%, quartz sand 15%, rubber particles 40% and ceramic particles 40%; the concrete formula of the cement adhesive is as follows: 45 parts of silicate cement, 26 parts of quartz sand, 7 parts of sulphoaluminate cement, 0.5 part of polycarboxylate water reducer, 1 part of fly ash, 20 parts of water and 0.2 part of thickener.
Example 3
The difference between this example and example 1 is that, when the insulator body is prepared, the mass percentages of the materials in the total amount are: 15% of industrial alumina, 20% of quartz sand, 30% of rubber particles and 35% of ceramic particles, and the concrete formula of the cement adhesive is as follows: 50 parts of silicate cement, 22 parts of quartz sand, 5 parts of sulphoaluminate cement, 0.3 part of polycarboxylate water reducer, 3 parts of fly ash, 20 parts of water and 0.5 part of thickener.
Therefore, the insulator structure is prepared from industrial alumina, quartz sand, rubber particles and ceramic particles, wherein the rubber particles and the ceramic particles are taken as base materials, the ceramic particles are added, and a small amount of industrial alumina, quartz sand and the like are added, so that the mechanical strength of an insulator body can be effectively increased, the nominal creepage distance of the whole insulator is not less than 400mm, the tensile electromechanical destruction load is 70kN, the effective value of the power frequency breakdown voltage is not less than 120kV, the effective value of the power frequency wet lightning voltage is not less than 45kV, the effective value of the power frequency dry lightning voltage is not less than 90kV, and the parameter design of the insulator in the prior art is far exceeded.
The above detailed description is only a preferred embodiment of the present invention and is not intended to limit the scope of the claims, but all equivalent changes and modifications that can be made according to the protection scope of the claims are included in the scope of the claims.
Claims (6)
1. A preparation method of a pollution-proof and ice-proof suspension porcelain insulator is characterized by comprising the following steps: the self-cleaning insulator comprises an insulator body (1), wherein an upper umbrella skirt (2) and a lower umbrella skirt (3) which correspond to each other are arranged outside the insulator body (1), and a glaze layer (4) of self-cleaning glaze is integrally smeared outside the insulator body (1); a steel cap (5) is arranged at the upper end part of the insulator body (1), and the steel cap (5) is glued and fixed with the insulator body (1) through cement adhesive (6); the inside of the insulator body (1) is correspondingly provided with a steel foot (7), and the steel foot (7) and the insulator body (1) are also glued and fixed through cement adhesive (6), so that the integral insulator is formed; the nominal creepage distance of the integral insulator is not less than 400mm, the tensile electromechanical damage load is 70kN, the effective value of the power frequency breakdown voltage is not less than 120kV, the effective value of the power frequency wet lightning voltage is not less than 45kV, the effective value of the power frequency dry lightning voltage is not less than 90kV, and the rated voltage is 25kV;
the upper end face and the lower end face of the upper umbrella skirt (2) and the lower umbrella skirt (3) are also provided with glaze-immersed long grooves (10), the glaze-immersed long grooves (10) at the upper end face and the lower end face of the same umbrella skirt are arranged in a staggered mode, the upper end face and the lower end face of the glaze layer (4) are correspondingly arranged in a plane shape, and the vertical section of the glaze-immersed long grooves (10) is arranged in a semicircular shape structure;
the preparation method comprises the following steps:
1) Preparation of insulator body (1):
the mass percentage of each material in the total amount is as follows: 5-15% of industrial alumina, 15-35% of quartz sand, 20-40% of feldspar and 30-50% of clay, and forming by mixing ball milling and rotary blank forming, and sintering at a high temperature of 1200-1300 ℃ to form the high-strength alumina suspension porcelain insulator;
2) Drying a semi-finished insulator body (1) in a shade drying and drying mode, processing a plurality of vertically staggered glaze soaking long grooves (10) on the upper umbrella skirt (2) and the lower umbrella skirt (3) of the insulator body (1) through a mechanical processing device, immersing the whole insulator body (1) in a glaze pool through a hoisting device, stirring and glazing by a stirring mechanism arranged in the glaze pool, hoisting the insulator body (1) and standing after glazing is finished, scraping redundant glaze through a glaze scraping device or sponge when a glaze layer (4) is softer, enabling the thickness of a surface glaze layer (4) to be consistent, and drying to obtain a finished product;
3) According to the size of the insulator body (1), preparing corresponding steel caps (5), steel feet (7), gaskets (9) and the like, and preparing cement adhesive (6), wherein the cement adhesive (6) is mainly prepared from the following components in parts by weight: 45-50 parts of silicate cement, 23-52 parts of quartz sand, 5-10 parts of sulphoaluminate cement, 0.1-1 part of polycarboxylate water reducer, 1-3 parts of fly ash, 10-30 parts of water and 0.1-1 part of thickener; and an outer steel cap (5), an inner gasket (9) and a steel foot (7) are respectively installed through cement adhesive (6), and finally a locking pin (8) is fixed.
2. The method for preparing the anti-pollution and anti-icing suspension porcelain insulator, which is characterized in that: the steel cap (5) is internally provided with a vertical downward locking pin (8), and the locking pin (8) is used for integrally installing and fixing the steel cap (5) and the insulator body (1) from the upper end.
3. The method for preparing the anti-pollution and anti-icing suspension porcelain insulator, which is characterized in that: the upper end part of the steel foot (7) is also provided with a gasket (9), the gasket (9) is also fixed by cement adhesive (6), and the locking pin (8) is provided with a 16W locking pin (8).
4. The method for preparing the anti-pollution and anti-icing suspension porcelain insulator, which is characterized in that: the thickness of the glaze layer (4) on the insulator body (1) is set to be 2mm-4mm; the outer diameter of the upper umbrella skirt (2) is set to be 360mm, and the outer diameter of the lower umbrella skirt (3) is set to be 255mm.
5. The method for preparing the anti-pollution and anti-icing suspension porcelain insulator, which is characterized in that: the insulator body (1) is made of industrial alumina, quartz sand, rubber particles and ceramic particles.
6. The method for preparing the anti-pollution and anti-icing suspension porcelain insulator, which is characterized in that: the density of the insulator body (1) is 2.50-2.70g/cm 3 。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023705.1A CN113936869B (en) | 2021-09-01 | 2021-09-01 | Pollution-proof and icing-proof suspension porcelain insulator and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023705.1A CN113936869B (en) | 2021-09-01 | 2021-09-01 | Pollution-proof and icing-proof suspension porcelain insulator and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113936869A CN113936869A (en) | 2022-01-14 |
| CN113936869B true CN113936869B (en) | 2024-04-12 |
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| CN115148430B (en) * | 2022-09-05 | 2022-11-22 | 天津市新玻电力复合绝缘子制造股份有限公司 | Composite three-umbrella type insulator and production process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070423A (en) * | 2015-09-17 | 2015-11-18 | 萍乡市长岭电瓷制造有限公司 | Stain-resistant disk-shaped suspension porcelain insulator |
| CN107799244A (en) * | 2017-09-30 | 2018-03-13 | 江苏南瓷绝缘子股份有限公司 | A kind of compound plate-shaped suspension type insulator of porcelain and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ITUB20152050A1 (en) * | 2015-07-10 | 2017-01-10 | Bigaran S R L | Refractory composite material, its preparation method, its use for the preparation of manufactured articles, as well as articles thus constituted and their use |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070423A (en) * | 2015-09-17 | 2015-11-18 | 萍乡市长岭电瓷制造有限公司 | Stain-resistant disk-shaped suspension porcelain insulator |
| CN107799244A (en) * | 2017-09-30 | 2018-03-13 | 江苏南瓷绝缘子股份有限公司 | A kind of compound plate-shaped suspension type insulator of porcelain and preparation method thereof |
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