CN212304454U - Insulating cover of solid insulated switch and solid insulated switch - Google Patents
Insulating cover of solid insulated switch and solid insulated switch Download PDFInfo
- Publication number
- CN212304454U CN212304454U CN202021288902.7U CN202021288902U CN212304454U CN 212304454 U CN212304454 U CN 212304454U CN 202021288902 U CN202021288902 U CN 202021288902U CN 212304454 U CN212304454 U CN 212304454U
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- switch
- arc extinguishing
- cavity
- chamber
- extinguishing chamber
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Abstract
The utility model relates to an insulating boot and solid insulated switch of solid insulated switch, wherein the insulating boot includes body, inlet wire sleeve pipe and outlet wire sleeve pipe that are formed by the integrative injection moulding of epoxy, inlet wire sleeve pipe and outlet wire sleeve pipe are located the relative both sides face of body length direction respectively, are provided with inlet wire conducting rod and outlet wire conducting rod in inlet wire sleeve pipe and the outlet wire sleeve pipe respectively; the body is internally provided with a switch cavity for installing the switch disconnecting link and supplying the switch disconnecting link to act and an arc extinguishing cavity for installing a vacuum arc extinguishing chamber, the arc extinguishing cavity is positioned at the side of the wire inlet sleeve, the wire inlet sleeve is communicated with the arc extinguishing cavity, the wire outlet sleeve is communicated with the switch cavity, and the bottom of the arc extinguishing cavity is provided with a static contact extending into the switch cavity so as to solve the problem of poor partial discharge performance of the existing solid insulation switch.
Description
Technical Field
The utility model relates to an electrical switch field specifically is an insulating boot and solid insulation switch that relate to a solid insulation switch.
Background
With the popularization and use of the solid-sealed circuit breaker and the large use of solid insulating parts such as a solid insulating sleeve and an insulator in solid insulating switchgear, how to reduce the partial discharge capacity of the solid insulating parts and improve the service life of the solid insulating parts becomes a problem to be solved urgently. The partial discharge refers to a discharge phenomenon occurring in a local range of an insulating medium of the electric power equipment under the action of a strong enough electric field, the discharge is limited to only cause a local short circuit of an insulator between conductors without forming a conductive channel, and the partial discharge may occur in a cavity of a solid insulator, bubbles of a liquid insulator, insulating layers with different characteristics, and sharp edges of a metal or semiconductor electrode. Since the breakdown field strength of a gas is much lower than that of a solid medium, the electric field in a gas is higher than that in a solid, and therefore, partial discharge tends to occur at the air gap. Although partial discharges in the power equipment are limited to a local range, each discharge has a certain influence on the insulating medium, so that the dielectric strength of the dielectric is gradually reduced, namely, the insulation is aged.
The partial discharge performance of a solid insulation switch in a solid insulation ring main unit in the existing market is mostly poor, so how to improve the partial discharge performance of the solid insulation switch is a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solid insulated switch's insulating boot to solve the relatively poor problem of partial discharge performance of current solid insulated switch.
The specific scheme is as follows:
an insulating cover of a solid insulating switch comprises a body, a wire inlet sleeve and a wire outlet sleeve, wherein the body is formed by integrally injection molding epoxy resin; the body is internally provided with a switch cavity for installing the switch disconnecting link and supplying the switch disconnecting link to act and an arc extinguishing cavity for installing a vacuum arc extinguishing chamber, the arc extinguishing cavity is positioned at the side of the wire inlet sleeve, the wire inlet sleeve is communicated with the arc extinguishing cavity, the wire outlet sleeve is communicated with the switch cavity, and the bottom of the arc extinguishing cavity is provided with a static contact extending into the switch cavity.
Furthermore, the arc extinguishing chamber is a chamber with one open end and one closed end, and one end of the incoming line conducting rod in the incoming line sleeve extends to the side of the open end of the arc extinguishing chamber.
Further, the closed end of the arc extinguishing chamber is provided with a notch portion communicated with the switch chamber, and the static contact comprises a contact portion located in the switch chamber and a connecting portion extending into the arc extinguishing chamber from the notch portion.
Furthermore, a through hole coaxially arranged with the arc extinguishing chamber is formed in the part, located in the arc extinguishing chamber, of the connecting portion, an assembly window communicated with the arc extinguishing chamber is formed in the position, facing the through hole, of the body, and a plug is installed in the assembly window.
Furthermore, the body is also provided with an umbrella skirt part which is arranged above the opening end of the arc extinguishing chamber in a protruding way.
Furthermore, the middle part of the switch chamber is provided with an isolation column which divides the switch chamber into two cavities which are mutually independent.
Furthermore, a concave part is arranged at the position, opposite to the isolation column, of the bottom of the switch cavity, and the thickness of the body at the position, opposite to the isolation column, is thinned through the concave part.
The utility model also provides a solid insulation switch, include as above arbitrary the insulating boot.
The utility model provides an insulating boot of solid insulated switch compares with prior art has following advantage: the utility model provides an insulating boot is with the integrative integration of outlet sleeve on the body, has reduced the structure complexity of body and outlet sleeve junction to inlet wire sleeve and outlet sleeve are located length direction's both sides face, can make its electric field more even stable, and then improve solid insulated switch's partial discharge performance.
Drawings
Fig. 1 shows a schematic cross-sectional view of an insulating cover.
Fig. 2 shows a schematic view of the closed end of the insulating cap.
Figure 3 shows a schematic view of the open end of the insulating cap.
Fig. 4 shows a schematic cross-sectional view of the insulating cover.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1 to 4, the present embodiment provides an insulating cover of a solid insulated switch, the insulating cover includes a body 10 integrally formed by injection molding epoxy resin, and an incoming bushing 11 and an outgoing bushing 12 located on two opposite sides of the body 10 in a length direction, an incoming conductive rod 111 is disposed in the incoming bushing 11, and an outgoing conductive rod 121 is disposed in the outgoing bushing 12.
The body 10 has a switch chamber 100 for mounting and operating the switch knife switch and an arc extinguishing chamber 101 for mounting the vacuum arc extinguishing chamber. The arc-extinguishing chamber 101 is located beside the wire-inlet bushing 11, the wire-inlet bushing 11 is communicated with the arc-extinguishing chamber 101, the wire-outlet bushing 12 is communicated with the switch chamber 100, and the bottom of the arc-extinguishing chamber 101 is provided with a static contact 13 extending into the switch chamber 100.
The insulating boot that this embodiment provided is integrative integrated on body 10 with outlet sleeve 12, has reduced the structure complexity of body 10 with outlet sleeve 12 junction to inlet sleeve 11 and outlet sleeve 12 are located length direction's both sides face, can make its electric field more even stable, and then improve solid insulated switch's partial discharge performance.
In this embodiment, the arc extinguishing chamber 101 is a chamber with an open end and a closed end, and one end of the incoming conducting rod 111 in the incoming sleeve 11 extends to the side of the open end of the arc extinguishing chamber 101, so as to facilitate the electrical connection between the incoming conducting rod 111 and the vacuum arc extinguishing chamber installed in the arc extinguishing chamber 101.
Preferably, the closed end of the arc-extinguishing chamber 101 has a notch portion communicating with the switching chamber 100, and the stationary contact 13 includes a contact portion 131 located in the switching chamber 100 and a connecting portion 132 extending from the notch portion into the arc-extinguishing chamber 101. Further, a through hole 1321 coaxially disposed with the arc extinguishing chamber 101 is formed on a portion of the connecting portion 132 located in the arc extinguishing chamber 101, and an assembling window 102 communicated with the arc extinguishing chamber 101 is formed on a position of the body 10 facing the through hole 1321, so that a rod body of the vacuum arc extinguishing chamber can pass through the through hole 1321 and is locked on the connecting portion 132 of the contact portion 131 through the assembling window 102, thereby realizing fixed assembling and electrical conduction between the vacuum arc extinguishing chamber and the stationary contact 13. A plug is installed in the assembly window 102 to ensure the tightness.
Preferably, the body 10 further has an umbrella skirt 103 protruding above the open end of the arc extinguishing chamber 101, and the umbrella skirt 103 can increase the creepage distance from the connection between the incoming line conductive rod 111 and the vacuum arc extinguishing chamber to the outside.
In the present embodiment, referring to fig. 1-4, the middle of the switch chamber 100 has an isolation column 14, the isolation column 14 divides the switch chamber 100 into two cavities independent from each other, so as to respectively mount the corresponding arc extinguishing chamber operating mechanism and the isolation grounding operating mechanism, so as to facilitate the assembly of the operating mechanism, and in addition, the isolation column 14 can also increase the strength of the insulating cover.
Preferably, a recess 15 is formed in a position, facing the isolation column 14, of the bottom of the switch chamber 100, and the recess 15 thins the thickness of the body 10 at the position facing the isolation column 14, so that the recess 15 can function as an explosion-proof window, and the explosion-proof window is arranged in the switch chamber, and when a fault occurs and the insulating cover is broken, the broken position can be located in the recess 15, and the explosion at the position does not affect other parts well, so that the purpose of safe explosion can be achieved.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides an insulating boot of solid insulation switch which characterized in that: the cable comprises a body, a cable inlet sleeve and a cable outlet sleeve, wherein the body is formed by integrally injection molding epoxy resin; the body is internally provided with a switch cavity for installing the switch disconnecting link and supplying the switch disconnecting link to act and an arc extinguishing cavity for installing a vacuum arc extinguishing chamber, the arc extinguishing cavity is positioned at the side of the wire inlet sleeve, the wire inlet sleeve is communicated with the arc extinguishing cavity, the wire outlet sleeve is communicated with the switch cavity, and the bottom of the arc extinguishing cavity is provided with a static contact extending into the switch cavity.
2. The insulating cover according to claim 1, characterized in that: the arc extinguishing chamber is a chamber with one open end and one closed end, and one end of the incoming line conducting rod in the incoming line sleeve extends to the side of the open end of the arc extinguishing chamber.
3. The insulating cover according to claim 2, characterized in that: the arc extinguishing chamber is provided with a notch part communicated with the switch chamber on the closed end, and the static contact comprises a contact part positioned in the switch chamber and a connecting part extending into the arc extinguishing chamber from the notch part.
4. The insulating cover according to claim 3, characterized in that: the connecting part is provided with a through hole which is coaxial with the arc extinguishing chamber on the part of the connecting part in the arc extinguishing chamber, an assembly window communicated with the arc extinguishing chamber is arranged on the position of the body opposite to the through hole, and a plug is arranged in the assembly window.
5. The insulating cover according to claim 2, characterized in that: the body is also provided with an umbrella skirt part which is convexly arranged above the opening end of the arc extinguishing chamber.
6. The insulating cover according to claim 1, characterized in that: the middle part of the switch cavity is provided with an isolation column which divides the switch cavity into two cavities which are mutually independent.
7. The insulating cover according to claim 6, wherein: the bottom of the switch cavity is provided with a sunken part at the position opposite to the isolation column, and the sunken part enables the thickness of the body at the position opposite to the isolation column to be thinner.
8. A solid insulated switch, characterized by: comprising an insulating cover according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021288902.7U CN212304454U (en) | 2020-07-03 | 2020-07-03 | Insulating cover of solid insulated switch and solid insulated switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021288902.7U CN212304454U (en) | 2020-07-03 | 2020-07-03 | Insulating cover of solid insulated switch and solid insulated switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212304454U true CN212304454U (en) | 2021-01-05 |
Family
ID=73936455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021288902.7U Active CN212304454U (en) | 2020-07-03 | 2020-07-03 | Insulating cover of solid insulated switch and solid insulated switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212304454U (en) |
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2020
- 2020-07-03 CN CN202021288902.7U patent/CN212304454U/en active Active
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