CN202344941U - Insulation combined piece for medium and high-voltage power transmission and distribution switching device - Google Patents
Insulation combined piece for medium and high-voltage power transmission and distribution switching device Download PDFInfo
- Publication number
- CN202344941U CN202344941U CN201120327761XU CN201120327761U CN202344941U CN 202344941 U CN202344941 U CN 202344941U CN 201120327761X U CN201120327761X U CN 201120327761XU CN 201120327761 U CN201120327761 U CN 201120327761U CN 202344941 U CN202344941 U CN 202344941U
- Authority
- CN
- China
- Prior art keywords
- power transmission
- switching device
- compound part
- insulated compound
- metallic conductor
- 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.)
- Expired - Fee Related
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 title claims abstract description 24
- 238000009826 distribution Methods 0.000 title claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 229920002313 fluoropolymer Polymers 0.000 claims abstract description 22
- 150000001875 compounds Chemical group 0.000 claims description 30
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 8
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000012212 insulator Substances 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 6
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000003822 epoxy resin Substances 0.000 description 12
- 229920000647 polyepoxide Polymers 0.000 description 12
- 230000015556 catabolic process Effects 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910016509 CuF 2 Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Insulators (AREA)
- Insulating Bodies (AREA)
Abstract
The utility model relates to an insulation combined piece for a medium and high-voltage power transmission and distribution switching device, and provides an insulation combined piece for the medium and high-voltage power transmission and distribution switching device. The insulation combined piece comprises a metal conductor and a fluoroplastic insulator formed on the surface of the metal conductor by an injection molding process. The service life, the reliability, the safety and the stability of relevant elements in the insulation combined pieces in the medium and high-voltage power transmission and distribution switching device can be improved greatly, and the working application range can be expanded.
Description
Technical field
The utility model belongs to mesohigh power transmission and distribution switching device field, relates to a kind of insulated compound part that is used for mesohigh power transmission and distribution switching device.
Background technology
Insulation touch base in the existing mesohigh power transmission and distribution switching device product; Comprise metallic conductor and the electric insulation part (claiming " insulator " again) that is installed on the said metallic conductor; It is through with after the poured with epoxy resin moulding, is assemblied on the metallic conductor made by binding agent.But there is following defective in prior art.
1, safety problem and work, application scope are little
Be prone to produce bubble and internal stress in the insulation daughter of moulding by casting; In case run into the external factor influence, such as instantaneous high electric current or the impacting with high pressure in the switching process, or big variations in temperature etc.; Insulator can crack with the crack and cause breakdown, thereby lead to serious security incident.
Therefore, the electrology characteristic of epoxy resin, promptly dielectric constant is bigger, has determined the insulated compound parts of being processed by it such as insulation touch base generally to be applicable in the mesohigh power transmission and distribution device below the 30KV such as 12 kilovolts (KV), 24KV.
In addition, the insulation touch base of being processed by epoxy resin generally is applicable to-30 ℃～90 ℃ working environment, and can not be applied to-200 ℃～-30 ℃, 90 ℃～250 ℃ or have the possible abominable working environment of chemical attack.
2, quality and cost problem
Prior art is earlier said electric insulation part and metallic conductor parts to be prepared separately, be assembled together then, so electric insulation part generally can not closely be combined on the metallic conductor.In order to strengthen both combination degrees, prior art generally adopts specific adhesives, or on metallic conductor, slots.Yet so not only increased production cost (cost of pouring technology own just very high), and can produce bubble usually in the adhesive, caused binding ability to weaken and shorten service life of product.
Up to now; In mesohigh power transmission and distribution switching device field; Do not have as yet a kind of be applicable to surpass 30KV touch the insulated compound part of relevant elements such as pipe, shielded coil such as insulation touch base, insulation; This insulated compound part production cost is low, and its electric insulation part need not to use adhesive just can closely be combined on the metallic conductor, under abominable working environment, can guarantee performances such as its long service life, reliability and stability height again simultaneously.
The utility model content
The utility model provides a kind of insulated compound part that is used for mesohigh power transmission and distribution switching device of novelty, thereby has solved the problem that exists in the prior art.
The inventor of the utility model back after deliberation finds; The insulating element of insulated compound part is if use than the low nearly one times fluoroplastics of epoxy resin dielectric constant (3.5-4); Like tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (dielectric constant is 2.1); Not only can have excellent anti lightning breakdown performance, also have the chemical resistance of excellent high and low temperature resistance (200 ℃ to 250 ℃, and epoxy resin be-30 ℃ to 90 ℃) and excellence; And; Fluoroplastics have bigger shrinkage factor (6% with respect to metallic conductor; Epoxy resin is merely 2%), therefore after the insulating element of being processed by it and metallic conductor cool off contraction simultaneously, owing to insulating element contraction deformation is combined closely on metallic conductor greatly; Its adhesion is more than 100 newton, need not any adhesive that plays the secondary combined effect.Based on above-mentioned discovery, the utility model is accomplished.
The utility model provides a kind of insulated compound part that is used for mesohigh power transmission and distribution switching device, and it comprises:
Metallic conductor; And
The fluoroplastic insulation body that on said metallic conductor surface, forms through Shooting Technique.
One preferred embodiment in, the material of said fluoroplastic insulation body is tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (claim again " PFA resin "), also can be fluorinated ethylene-propylene copolymer (claiming " FEP resin " again), or their combination.
Another preferred embodiment in, the direct injection mo(u)lding of said fluoroplastic insulation body is on the metallic conductor surface, cooling is shunk the back and is combined with metallic conductor.
Another preferred embodiment in, said insulated compound part is the insulation touch base in the mesohigh power transmission and distribution switching device, pipe, perhaps shielded coil are touched in insulation.
Another preferred embodiment in, said insulation touch base is ground connection touch base or combined floodgate touch base.
Another preferred embodiment in, said insulated compound part is applicable to that rated voltage is at the high pressure power transmission and distribution switching device more than 30 kilovolts.
The beneficial effect of the utility model is following:
The insulated compound part of the utility model has higher service life and reliability; It can be applied in the above high pressure power transmission and distribution switching device of 30KV for a long time; And internal stress free and bubble in the insulation daughter; And can combine closely with metallic conductor, thereby having guaranteed that whole device performance is stable, technology and quality control are stable.
The insulated compound part of the utility model has higher high and low temperature resistance, and its environment for use limiting temperature rises to-200 ℃ to 250 ℃ by-30 ℃ to 90 ℃ of prior art, and its cold-resistant thermal shock resistance properties is good, has widened the scope that product is used.
The insulated compound part of the utility model has higher insulating properties or performance is worn in resistance, and its specified lightning impulse breakdown voltage maximum can reach 250KV, apparently higher than the upper limit 185KV of prior art, has improved security of products to a certain extent.
The insulated compound part of the utility model has excellent arc resistance.Principle is: in the prior art, power transmission and distribution are the arcing that takes place when opening circuit because between electrode contacts, extinguishing arc medium SF
6Can decomposite active SF
4, SF
4Can hydrolysis take place and generate SOF under the micro-moisture effect
2, HF, can with the reaction of the epoxide group of epoxy resin, it is aging that poured with epoxy resin spare surface is taken place, sheet resistance reduces, so that tracking takes place; Yet in the utility model, SOF
2, HF and fluoroplastics group do not react, and effectively avoided electric leakage to take place.Below be chemical reaction process of the prior art:
SF
6+Cu→SF
4+CuF
2
3SF
6+W→3SF
4+WF
6
SF
4+H
2O→SOF
2+2HF
SOF
2+H
2O→SO
2+2HF
WF
6+3H
2O→WO
3+6HF
Description of drawings
Fig. 1 is the structural profile sketch map according to the insulated compound part of an embodiment of the utility model.
The specific embodiment
The utility model is a kind of insulated compound part that is used for mesohigh power transmission and distribution switching device, and it can be insulation touch base such as ground connection touch base or combined floodgate touch base in the mesohigh power transmission and distribution switching device, and pipe is touched in insulation, perhaps element such as shielded coil.
Its concrete structure comprises metallic conductor, and is formed on the lip-deep fluoroplastic insulation body of said metallic conductor through Shooting Technique.
Preferably, said fluoroplastic insulation body can be tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), or fluorinated ethylene-propylene copolymer (FEP), or their combination.
In the utility model, the direct injection mo(u)lding of said fluoroplastic insulation body is on the metallic conductor surface, and cooling is shunk the back and combined with metallic conductor.
In the utility model, said insulated compound part applicable to rated voltage at the high pressure power transmission and distribution switching device more than 30 kilovolts.
In the utility model; Fluoroplastic insulation body that uses such as PFA have excellent high and low temperature resistance and excellent chemical resistance; Can in bad working environment, use, thus the longer service life and better reliability and stability of insulated compound part product of giving gained.
In the utility model, the fluoroplastic insulation body such as the PFA of use have lower dielectric constant, thereby give the excellent high pressure resistant breakdown performance of insulated compound part product of gained.
Below referring to accompanying drawing.
Fig. 1 is the structural profile sketch map according to the insulated compound part of an embodiment of the utility model.As shown in Figure 1, fluoroplastic insulation body 1 directly is combined in through Shooting Technique on the surface of metallic conductor 2, closely combines with metallic conductor 2.
Embodiment
Further set forth the utility model below in conjunction with concrete embodiment.The following example only is used for explanation and explanation the utility model, and does not constitute the restriction to the utility model scope.
Embodiment 1
Preparation process is following:
(i) processing metal conductor:
Turning processing metal surface of conductors;
The surface of blasting treatment metallic conductor;
(ii) injection mo(u)lding:
Above-mentioned metallic conductor through processing is pre-installed on injection mold;
With fluoroplastic insulation body PFA injection mo(u)lding on above-mentioned metallic conductor surface;
Said fluoroplastic insulation body PFA cooling after-contraction combines with metallic conductor.
Product test is following:
The insulated compound part that makes is assemblied in the power transmission and distribution switch cubicle, and when metallic conductor opened circuit, conductor tip was producing huge breakdown field strength VB=kd/ ε (k is a constant, and d is a thickness) with the insulator binding site; During through different medium, field intensity also differs widely; Under the identical wall thickness situation, the breakdown field strength VB of insulator and its DIELECTRIC CONSTANTS are inversely proportional to; Because the DIELECTRIC CONSTANTS of fluoroplastics PFA is 2.1, little a lot of than the DIELECTRIC CONSTANTS (3.5-4.0) of epoxy resin, so its breakdown potential pressure energy to more than the 250KV, and epoxy resin can only arrive 185KV.Result of the test sees the following form:
Preparation process is following:
(i) processing metal conductor:
Turning processing metal surface of conductors;
The surface of blasting treatment metallic conductor;
(ii) injection mo(u)lding:
Above-mentioned metallic conductor through processing is pre-installed on injection mold;
With fluoroplastic insulation body FEP injection mo(u)lding on above-mentioned metallic conductor surface;
Said fluoroplastic insulation body FEP cooling after-contraction combines with metallic conductor.
Product test is following:
The insulated compound part that makes is assemblied in the power transmission and distribution switch cubicle, and when metallic conductor opened circuit, conductor tip was producing huge breakdown field strength VB=kd/ ε (k is a constant, and d is a thickness) with the insulator binding site; During through different medium, field intensity also differs widely; Under the identical wall thickness situation, the breakdown field strength VB of insulator and its DIELECTRIC CONSTANTS are inversely proportional to; Because the DIELECTRIC CONSTANTS of fluoroplastics FEP is 2.0, little a lot of than the DIELECTRIC CONSTANTS (3.5-4.0) of epoxy resin, so its breakdown potential pressure energy to more than the 250KV, and epoxy resin can only arrive 185KV.Result of the test sees the following form:
All documents in that the utility model is mentioned are all quoted as a reference in this application, are just quoted such as a reference separately as each piece document.Should be understood that in addition that after the foregoing of having read the utility model those skilled in the art can do various changes or modification to the utility model, these are equal to change and fall within the application's appended claims institute restricted portion equally.
Claims (6)
1. insulated compound part that is used for mesohigh power transmission and distribution switching device, it comprises:
Metallic conductor; And
The fluoroplastic insulation body that on said metallic conductor surface, forms through Shooting Technique.
2. insulated compound part as claimed in claim 1 is characterized in that, the material of said fluoroplastic insulation body is a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, or fluorinated ethylene-propylene copolymer.
3. insulated compound part as claimed in claim 1 is characterized in that, the direct injection mo(u)lding of said fluoroplastic insulation body is on the metallic conductor surface, and cooling is shunk the back and combined with metallic conductor.
4. like each described insulated compound part among the claim 1-3, it is characterized in that said insulated compound part is the insulation touch base in the mesohigh power transmission and distribution switching device, pipe, perhaps shielded coil are touched in insulation.
5. insulated compound part as claimed in claim 4 is characterized in that, said insulation touch base is ground connection touch base or combined floodgate touch base.
6. insulated compound part as claimed in claim 4 is characterized in that, said insulated compound part is applicable to that rated voltage is at the high pressure power transmission and distribution switching device more than 30 kilovolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120327761XU CN202344941U (en) | 2011-09-02 | 2011-09-02 | Insulation combined piece for medium and high-voltage power transmission and distribution switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120327761XU CN202344941U (en) | 2011-09-02 | 2011-09-02 | Insulation combined piece for medium and high-voltage power transmission and distribution switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202344941U true CN202344941U (en) | 2012-07-25 |
Family
ID=46533968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120327761XU Expired - Fee Related CN202344941U (en) | 2011-09-02 | 2011-09-02 | Insulation combined piece for medium and high-voltage power transmission and distribution switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202344941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437516A (en) * | 2011-09-02 | 2012-05-02 | 圣戈班高功能塑料(上海)有限公司 | Insulation compound for medium and high voltage transmission and distribution switchgear and preparation method thereof |
-
2011
- 2011-09-02 CN CN201120327761XU patent/CN202344941U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437516A (en) * | 2011-09-02 | 2012-05-02 | 圣戈班高功能塑料(上海)有限公司 | Insulation compound for medium and high voltage transmission and distribution switchgear and preparation method thereof |
| CN102437516B (en) * | 2011-09-02 | 2015-10-28 | 圣戈班高功能塑料(上海)有限公司 | For the insulated compound part and preparation method thereof of mesohigh power transmission and distribution switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20160902 |