CN115763140A - Integrated insulator isolating switch mechanism - Google Patents
Integrated insulator isolating switch mechanism Download PDFInfo
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- CN115763140A CN115763140A CN202211527088.3A CN202211527088A CN115763140A CN 115763140 A CN115763140 A CN 115763140A CN 202211527088 A CN202211527088 A CN 202211527088A CN 115763140 A CN115763140 A CN 115763140A
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- Prior art keywords
- insulator
- pull rod
- umbrella
- insulator body
- switch mechanism
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- 239000012212 insulator Substances 0.000 title claims abstract description 63
- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 25
- 229910001369 Brass Inorganic materials 0.000 claims description 10
- 239000010951 brass Substances 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 8
- 239000004945 silicone rubber Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 abstract description 11
- 239000011810 insulating material Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 7
- 230000005684 electric field Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009461 vacuum packaging Methods 0.000 description 1
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Abstract
The invention discloses an integrated insulator isolating switch mechanism, relates to the technical field of power equipment, and comprises an insulator body, an insulating pull rod and a silicon rubber cover. A plurality of umbrella-shaped structures are integrally formed on the outer wall of the insulator body; the top of the insulator body is provided with a first wire outlet end, the middle of the insulator body is provided with a second wire outlet end, and a cavity is arranged in the insulator body; the cavity is divided into an upper cavity and a lower cavity by the second wire outlet end, a vacuum bag is embedded in the upper cavity, and the lower cavity is provided with a plurality of spiral structures; the insulating pull rod is arranged in the spiral structure, and one end of the insulating pull rod is in threaded connection with the bottom of the vacuum bag; the silicon rubber cover is arranged at the bottom of the insulator body and is fixedly connected with the insulating pull rod. The invention changes the connection mode of the metal accessory and the insulator body, adopts the mode of embedding the metal accessory in the tool to connect the insulating material and the metal accessory into a whole, and avoids the possibility of looseness between the accessory and the insulator body.
Description
Technical Field
The invention belongs to the technical field of power equipment, and particularly relates to an integrated insulator isolating switch mechanism.
Background
The majority of the existing vacuum circuit breakers of international and domestic electric locomotives and motor train units are arranged on the roof, and the main circuit part is exposed and arranged. The main circuit of the product exposed and installed on the roof discharges to the ground in the heavy pollution or air humid weather condition.
And the existing product has heavy mass and large volume, and is very inconvenient to be applied in a vehicle or to install a high-pressure tank, so that the whole high-pressure tank has to adopt a larger shell. In the aspect of insulating materials adopted by the existing vacuum circuit breakers, the existing vacuum circuit breakers are mostly connected in a mode of adding metal accessories to porcelain and silicon rubber materials, and faults such as looseness, cracking and the like of an insulating body and the metal accessories occur occasionally.
Therefore, the present invention provides an integrated isolator mechanism to solve the above problems in the prior art.
Disclosure of Invention
It is an object of the present invention to provide an integrated isolator switch mechanism that addresses at least one of the problems and deficiencies set forth in the background above.
According to an aspect of the present invention, there is provided an integrated insulator isolator mechanism comprising:
the insulator comprises an insulator body, a plurality of first insulator bodies and a plurality of second insulator bodies, wherein a plurality of umbrella-shaped structures are integrally formed on the outer wall of the insulator body, and distances are reserved among the umbrella-shaped structures; the top of the insulator body is provided with a first wire outlet end, the middle of the insulator body is provided with a second wire outlet end, and a cavity is formed in the insulator body; the second wire outlet end divides the cavity into an upper cavity and a lower cavity, a vacuum bag is embedded in the upper cavity, and the lower cavity is provided with a plurality of spiral structures; the insulating pull rod is arranged in the spiral structure, and one end of the insulating pull rod is in threaded connection with the bottom of the vacuum bag; and the silicon rubber cover is arranged at the bottom of the insulator body and is fixedly connected with the insulating pull rod.
According to another exemplary embodiment of the present invention, the distance C between the umbrella structures is ≧ 20mm.
According to another exemplary embodiment of the present invention, the umbrella structures are arranged alternately from top to bottom depending on the size of the radius.
According to another embodiment of the present inventionOf the umbrella-like structures, the difference in radius P between the umbrella-like structures i The upper inclination angle and the lower inclination angle of the umbrella-shaped structures are respectively 10 degrees and 2 degrees, and the size of the umbrella-shaped structures is larger than or equal to 15 mm.
According to another exemplary embodiment of the invention, a plurality of brass nuts are embedded in the bottom of the insulator body.
According to another exemplary embodiment of the invention, the insulating pull rod comprises a pull rod body, wherein an umbrella skirt is arranged in the middle of the pull rod body, a connecting insert matched with the vacuum bag is arranged at the top of the pull rod body, and a connecting rod is arranged at the bottom of the pull rod body.
According to another exemplary embodiment of the invention, the silicon rubber cover is of a disc structure, a plurality of brass inserts matched with brass nuts are embedded in the silicon rubber cover, and the silicon rubber cover is fixedly connected with the connecting rod.
According to another exemplary embodiment of the present invention, a plurality of insulating bellows are further provided on the silicon rubber cover.
Compared with the prior art, the invention has the beneficial effects that:
1. the first wire outlet end and the second wire outlet end are designed in a staggered mode, so that the electric clearance is increased; the umbrella-shaped structures are alternately arranged on the outer wall of the insulator body according to the radius, and when the insulator is actually used, the larger umbrella-shaped structures can effectively block the conductive terminals, and meanwhile, the alternate arrangement prolongs the creepage distance, and the insulating property is further improved.
2. The invention changes the connection mode of the metal accessory and the insulator body, adopts the mode of embedding the metal accessory in the tool to connect the insulating material and the metal accessory into a whole, and avoids the possibility of looseness between the accessory and the insulator body.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an integrated isolator mechanism;
FIG. 2 is a schematic structural diagram of an insulating pull rod;
FIG. 3 is a schematic structural view of a silicone rubber cover;
FIG. 4 is a graph of the dielectric constant and loss tangent of HCEP versus temperature;
FIG. 5 is a graph of the dielectric constant and loss tangent of CEP as a function of temperature.
In the figure: 1. an insulator body; 2. an insulating pull rod; 3. a silicone rubber cover; 4. vacuum packaging; 11. an umbrella-like structure; 12. a first outlet terminal; 13. a second outlet terminal; 14. a helical structure; 15. a brass nut; 21. a pull rod body; 22. an umbrella skirt; 23. a connecting rod; 24. connecting the inserts; 31. an insulating corrugated tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are further specifically described below by way of embodiments and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting an integrated isolator switch mechanism of the present invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
According to a general technical concept of the present invention, as shown in fig. 1 to 5, there is provided an integrated insulator isolation switch mechanism including an insulator body 1, an insulating rod 2, and a silicone rubber cover 3.
The insulator comprises an insulator body 1, a plurality of umbrella-shaped structures 11, a plurality of connecting rods and a plurality of connecting rods, wherein the plurality of umbrella-shaped structures 11 are integrally formed on the outer wall of the insulator body 1, and distances are reserved among the umbrella-shaped structures 11; the top of the insulator body 1 is provided with a first wire outlet end 12, the middle of the insulator body 1 is provided with a second wire outlet end 13, and a cavity is arranged in the insulator body 1;
the cavity is divided into an upper cavity and a lower cavity by the second wire outlet end 13, the vacuum bag 4 is embedded in the upper cavity, and the lower cavity is provided with a plurality of spiral structures 14; the insulating pull rod 2 is arranged in the spiral structure 14, and one end of the insulating pull rod is in threaded connection with the bottom of the vacuum bag 4; the silicon rubber cover 3 is arranged at the bottom of the insulator body 1 and is fixedly connected with the insulating pull rod 2.
Through the arrangement, the first wire outlet end 12 and the second wire outlet end 13 are designed in a staggered mode, and the electric clearance is increased; umbrella-shaped structure 11 arranges in turn on the outer wall of insulator body 1 according to radius size, and when in actual use, great umbrella-shaped structure 11 not only can effectively block conductive terminal, and the alternative arrangement has prolonged creepage distance simultaneously, has further improved insulating properties.
In this embodiment, the distance C between the umbrella structures 11 is greater than or equal to 20mm.
It should be noted that the rain flash voltage of the insulator is mainly determined by the arc distance between the first outlet terminal 12 and the second outlet terminal 13, and is about 95% of the dry flash voltage. When the hydrophobicity is weakened or lost, the rain lightning voltage of the rain lightning can be obviously reduced. If the distance between the umbrellas is ensured to be larger than 25mm, the raining can not seriously threaten the safe operation of the composite insulator.
Furthermore, the invention adopts HCEP and CEP as the raw materials of the insulator body 1, and the material is considered as the best insulating material applied outdoors due to the inherent hydrophobicity characteristic of the silicon rubber to the surface pollution, but the comparative property is the most fatal weakness of the material, so the material is not suitable for being used as an engineering material with higher mechanical load requirement, and the invention combines the characteristics of the HCEP and the CEP, not only has the excellent performance of the engineering epoxy material, but also can improve the advanced inherent hydrophobicity, transfer hydrophobicity and reduction hydrophobicity.
The performance indexes of the material are shown in the following table;
TABLE 1
In one embodiment, the umbrella structures 11 alternate from top to bottom depending on the size of the radius.
Specifically, in order to ensure the electrical performance and anti-fouling requirements of the insulator, the diameters of the umbrella structures 11 of the present invention are arranged as shown in the following table:
TABLE 2
Furthermore, the radius difference between the umbrella-shaped structures 11 is more than or equal to 15mm, so that the creepage distance is increased as much as possible.
Specifically, the difference in the radii of the large and small umbrella structures 11.
Wherein, the radius of the ith umbrella-shaped structure 11 is the radius of the (i-1) th umbrella.
The upward inclination angles of the umbrella-shaped structures 11 are all 10 degrees so as to increase self-cleaning capability, so that dirt such as rainwater can flow down along the edges of the umbrella-shaped structures 11, the downward inclination angles are all 2 degrees, the mechanical strength is ensured, and in addition, the demolding is convenient during molding.
In this embodiment, a plurality of brass nuts 15 are embedded in the bottom of the insulator body 1.
Specifically, the insulating pull rod 2 comprises a pull rod body 21, an umbrella skirt 22 is arranged in the middle of the pull rod body 21, a connecting insert 24 matched with the vacuum bag 4 is arranged at the top of the pull rod body 21, and a connecting rod 23 is arranged at the bottom of the pull rod body 21.
Through the arrangement, the connection mode of the metal accessory and the insulator body 1 is changed, the mode of embedding the metal accessory in the tool is adopted, the insulating material of the insulator is connected with the metal accessory into a whole, and the possibility of looseness between the accessory and the insulator body is eliminated.
Further, the silicon rubber cover 3 is of a disc structure, a plurality of brass inserts matched with the brass nuts 15 are pre-embedded in the silicon rubber cover 3, and the silicon rubber cover 3 is fixedly connected with the connecting rod 23.
Through the arrangement, the insulating pull rod 2 and the silicon rubber cover 3 are assembled with the insulator body 1 into a whole, the insulating pull rod 2 can conduct a part of electric field of the insulator body 1 to the silicon rubber cover 3, and the silicon rubber cover 3 guides the electric field into the grounding end, so that the electric field intensity of the positions of the first wire outlet end 12 and the second wire outlet end 13 is reduced.
In this embodiment, the silicon rubber cover 3 is further provided with a plurality of insulating bellows 31 to seal and insulate the high-voltage part and the cavity supporting the insulating part.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An integral insulator isolation switch mechanism, comprising:
the insulator comprises an insulator body (1), wherein a plurality of umbrella-shaped structures (11) are integrally formed on the outer wall of the insulator body, and distances are reserved among the umbrella-shaped structures (11);
the top of the insulator body (1) is provided with a first wire outlet end (12), the middle of the insulator body (1) is provided with a second wire outlet end (13), and a cavity is formed in the insulator body (1);
the cavity is divided into an upper cavity and a lower cavity by the second outlet end (13), a vacuum bag (4) is embedded in the upper cavity, and the lower cavity is provided with a plurality of spiral structures (14);
the insulating pull rod (2) is arranged in the spiral structure (14), and one end of the insulating pull rod is in threaded connection with the bottom of the vacuum bag (4); and
and the silicon rubber cover (3) is arranged at the bottom of the insulator body (1) and is fixedly connected with the insulating pull rod (2).
2. An integral insulator isolation switch mechanism according to claim 1, characterized in that the distance C between the umbrella structures (11) is more than or equal to 20mm.
3. An integral insulator isolation switch mechanism according to claim 1 or 2, characterized in that the umbrella structures (11) are arranged alternately from top to bottom depending on the radius.
4. The integrated insulator isolation switch mechanism according to claim 3, wherein the radius difference between the umbrella-shaped structures (11) is more than or equal to 15mm, and the upward inclination angles and the downward inclination angles of the umbrella-shaped structures (11) are 10 degrees and 2 degrees respectively.
5. The integrated insulator isolation switch mechanism according to claim 4, wherein a plurality of brass nuts (15) are embedded in the bottom of the insulator body (1).
6. The integrated insulator isolation switch mechanism according to claim 1, wherein the insulating pull rod (2) comprises a pull rod body (21), an umbrella skirt (22) is arranged in the middle of the pull rod body (21), a connecting insert (24) matched with the vacuum bag (4) is arranged at the top of the pull rod body (21), and a connecting rod (23) is arranged at the bottom of the pull rod body (21).
7. The integrated insulator isolation switch mechanism according to claim 1, wherein the silicone rubber cover (3) is of a disc structure, a plurality of brass inserts matched with brass nuts (15) are embedded in the silicone rubber cover (3), and the silicone rubber cover (3) is fixedly connected with a connecting rod (23).
8. An integral isolator mechanism according to claim 7, characterised in that a plurality of insulating bellows (31) are provided on the silicone rubber cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211527088.3A CN115763140A (en) | 2022-11-30 | 2022-11-30 | Integrated insulator isolating switch mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211527088.3A CN115763140A (en) | 2022-11-30 | 2022-11-30 | Integrated insulator isolating switch mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115763140A true CN115763140A (en) | 2023-03-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211527088.3A Pending CN115763140A (en) | 2022-11-30 | 2022-11-30 | Integrated insulator isolating switch mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115763140A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050236371A1 (en) * | 2004-04-19 | 2005-10-27 | Abb Technology Ag | Gas-insulated switchgear device |
| CN202549700U (en) * | 2012-04-06 | 2012-11-21 | 江苏大全高压开关有限公司 | Miniaturized electric conduction structure |
| CN203013426U (en) * | 2011-12-06 | 2013-06-19 | 江苏神马电力股份有限公司 | 550kV low-pressure SF6 gas insulation composite bushing |
| CN106653462A (en) * | 2016-12-14 | 2017-05-10 | 江苏南瑞帕威尔电气有限公司 | Integrally cast vacuum circuit breaker monopole |
| CN207637560U (en) * | 2017-12-21 | 2018-07-20 | 中车株洲电力机车有限公司 | A kind of vacuum circuit-breaker insulated and vacuum circuit breaker |
-
2022
- 2022-11-30 CN CN202211527088.3A patent/CN115763140A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050236371A1 (en) * | 2004-04-19 | 2005-10-27 | Abb Technology Ag | Gas-insulated switchgear device |
| CN203013426U (en) * | 2011-12-06 | 2013-06-19 | 江苏神马电力股份有限公司 | 550kV low-pressure SF6 gas insulation composite bushing |
| CN202549700U (en) * | 2012-04-06 | 2012-11-21 | 江苏大全高压开关有限公司 | Miniaturized electric conduction structure |
| CN106653462A (en) * | 2016-12-14 | 2017-05-10 | 江苏南瑞帕威尔电气有限公司 | Integrally cast vacuum circuit breaker monopole |
| CN207637560U (en) * | 2017-12-21 | 2018-07-20 | 中车株洲电力机车有限公司 | A kind of vacuum circuit-breaker insulated and vacuum circuit breaker |
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