CN209804526U - Novel isolating switch contact structure - Google Patents
Novel isolating switch contact structure Download PDFInfo
- Publication number
- CN209804526U CN209804526U CN201920852360.2U CN201920852360U CN209804526U CN 209804526 U CN209804526 U CN 209804526U CN 201920852360 U CN201920852360 U CN 201920852360U CN 209804526 U CN209804526 U CN 209804526U
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- contact
- static
- arc
- insulating seat
- main contact
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Abstract
A novel isolating switch contact structure comprises an insulating base, a hollow arc-shaped shielding cover, a static main contact and a static arc contact, wherein the hollow arc-shaped shielding cover is connected with the outer wall of the insulating base; the head of the static arc contact is arched, and the tail of the static arc contact is provided with a blind hole matched with the limit nail; and a plurality of static main contact assemblies are symmetrically arranged at the left end of the insulating seat. The utility model discloses can be when the separating brake with the electric arc restriction between moving contact and quiet arc contact, simultaneously because quiet arc contact and the approximate evenly distributed of shield cover appearance laminating electric field can reduce the frequency and the number of times of the appearance of heavy puncture between moving contact and the quiet arc contact, reduce VFTO and produce the probability.
Description
Technical Field
The utility model relates to a isolator's technical field specifically is a novel isolator contact structure.
Background
When a disconnector of a gas-insulated metal-enclosed switchgear opens and closes a small capacitive current, for example by switching on or off an empty busbar (pipe) section or a parallel capacitor of a circuit breaker with the disconnector, a destructive discharge to ground may occur. In recent years, there has been a deep understanding of the worldwide nature of research and complexity of the very rapid transient overvoltage phenomena that occur as the disconnectors of gas insulated metal enclosed switchgear perform the inherent functions of capacitive current switching. From this it can be concluded that: proper isolator design is critical to avoid producing damaging discharges to ground. Therefore, it is necessary to design a new contact structure of the disconnecting switch to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel isolator contact structure, outside having good anti-seismic performance, be convenient for install and maintain.
In order to achieve the above object, the present invention adopts the following specific technical solutions:
a novel contact structure of an isolating switch comprises an insulating seat; the upper end and the lower end of the insulating seat are symmetrically connected with shielding covers, the shielding covers are hollow arc-shaped, the axis of the insulating seat is provided with a limiting nail, the right end of the limiting nail is sleeved with a spring, one end of the spring is connected with the insulating seat, and the other end of the spring is abutted against the tail end of the static arc contact; the head of the static arc contact is arched, and the tail of the static arc contact is provided with a blind hole matched with the limit nail; the left end of the insulating seat is symmetrically provided with a plurality of static main contact assemblies, and each static main contact assembly comprises a limiting plate, a static main contact, a V-shaped elastic sheet and a fastening screw; the limiting plate is connected with the left end face of the insulating seat, the tail of the static main contact is connected with the outer wall of the insulating seat, the static main contact is arranged on the outer surfaces of the limiting plate and the left end of the insulating seat, the head of the limiting plate is provided with a buckle, and the middle of the static main contact is provided with a clamping groove matched with the buckle; the head of the fastening screw penetrates through the static main contact and is screwed on the limiting plate, and the tail of the fastening screw is also connected with the outer wall of the static main contact through a V-shaped elastic sheet; the moving contact and the static arc contact are coaxially arranged.
In order to achieve better isolation performance, the shielding cover and the static arc contact are preferably in a shape which is approximately distributed along the electric field.
Preferably, the left end of the insulating base is provided with a convex buckle, and the upper end of the static main contact is provided with a groove matched with the convex buckle.
Has the advantages that: compared with the prior art, the utility model discloses when being in the combined floodgate position, the moving contact fully contacts with quiet main contact and ensures the long-time through-current capacity of rated current, and quiet arc contact is pressed down to the moving contact simultaneously.
When the movable contact is positioned at the brake separating position, the movable contact is separated from the static main contact and the static arc contact, and the static arc contact and the shielding cover are positioned on the same surface to ensure the uniformity of an electric field and improve the insulation strength after brake separating.
When just opening, the moving contact separates earlier with quiet main contact, and the moving contact separates behind with quiet arcing contact, ensures to restrict the electric arc between moving contact and quiet arcing contact when opening, simultaneously because quiet arcing contact and the similar evenly distributed of shield cover appearance laminating electric field, can reduce the frequency and the number of times of the appearance of retracing between moving contact and the quiet arcing contact, reduces VFTO and produces the probability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a just-opened state;
fig. 3 is a schematic diagram of the opening state.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.
referring to figures 1-3 of the drawings,
A novel isolating switch contact structure comprises an insulating base 1; the upper end and the lower end of the insulating seat 1 are symmetrically connected with shielding cases 2, the shielding cases 2 are hollow arcs, the axis of the insulating seat is provided with a limiting nail 3, the right end of the limiting nail is sleeved with a spring 5, one end of the spring is connected with the insulating seat 1, and the other end of the spring is abutted against the tail end of a static arc contact 4; the head of the static arc contact 4 is arched, and the tail of the static arc contact is provided with a blind hole matched with the limit pin; a plurality of static main contact assemblies are symmetrically arranged at the left end of the insulating seat 1, and each static main contact assembly comprises a limiting plate 6, a static main contact 7, a V-shaped elastic sheet 8 and a fastening screw 9; the limiting plate 6 is connected with the left end face of the insulating seat 1, the tail of the static main contact 7 is connected with the outer wall of the insulating seat 1, the static main contact 7 is arranged on the outer surfaces of the limiting plate 6 and the left end of the insulating seat 1, the head of the limiting plate 6 is provided with a buckle, and the middle of the static main contact is provided with a clamping groove matched with the buckle; the head of the fastening screw 9 penetrates through the static main contact and is screwed on the limiting plate, and the tail of the fastening screw is also connected with the outer wall of the static main contact through a V-shaped elastic sheet; the moving contact 10 and the static arc contact 4 are coaxially arranged.
In order to achieve better isolation performance, the shielding cover and the static arc contact are preferably in a shape which is approximately distributed along the electric field.
Preferably, the left end of the insulating base is provided with a convex buckle, and the upper end of the static main contact is provided with a groove matched with the convex buckle.
When the switch is in a switch-on position, the moving contact is fully contacted with the static main contact to ensure the long-time through-current capacity of rated current, and meanwhile, the moving contact presses down the static arc contact.
When the movable contact is positioned at the brake separating position, the movable contact is separated from the static main contact and the static arc contact, and the static arc contact and the shielding cover are positioned on the same surface to ensure the uniformity of an electric field and improve the insulation strength after brake separating.
When just opening, the moving contact separates earlier with quiet main contact, and the moving contact separates behind with quiet arcing contact, ensures to restrict the electric arc between moving contact and quiet arcing contact when opening, simultaneously because quiet arcing contact and the similar evenly distributed of shield cover appearance laminating electric field, can reduce the frequency and the number of times of the appearance of retracing between moving contact and the quiet arcing contact, reduces VFTO and produces the probability.
The preferred embodiments and examples of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments and examples, and various changes can be made without departing from the concept of the present invention within the knowledge of those skilled in the art.
Claims (3)
1. a novel isolating switch contact structure is characterized by comprising an insulating seat and a moving contact; the upper end and the lower end of the insulating seat are symmetrically connected with shielding covers, the shielding covers are hollow arc-shaped, the axis of the insulating seat is provided with a limiting nail, the right end of the limiting nail is sleeved with a spring, one end of the spring is connected with the insulating seat, and the other end of the spring is abutted against the tail end of the static arc contact; the head of the static arc contact is arched, and the tail of the static arc contact is provided with a blind hole matched with the limit nail; the left end of the insulating seat is symmetrically provided with a plurality of static main contact assemblies, and each static main contact assembly comprises a limiting plate, a static main contact, a V-shaped elastic sheet and a fastening screw; the limiting plate is connected with the left end face of the insulating seat, the tail of the static main contact is connected with the outer wall of the insulating seat, the static main contact is arranged on the outer surfaces of the limiting plate and the left end of the insulating seat, the head of the limiting plate is provided with a buckle, and the middle of the static main contact is provided with a clamping groove matched with the buckle; the head of the fastening screw penetrates through the static main contact and is screwed on the limiting plate, and the tail of the fastening screw is also connected with the outer wall of the static main contact through a V-shaped elastic sheet; the moving contact and the static arc contact are coaxially arranged.
2. The novel isolating switch contact structure as claimed in claim 1, wherein the shield and the stationary arcing contact are shaped to conform to the approximate distribution of the electric field.
3. The novel isolating switch contact structure as claimed in claim 1, wherein a convex buckle is arranged at the left end of the insulating base, and a groove matched with the convex buckle is arranged at the upper end of the static main contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852360.2U CN209804526U (en) | 2019-06-06 | 2019-06-06 | Novel isolating switch contact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852360.2U CN209804526U (en) | 2019-06-06 | 2019-06-06 | Novel isolating switch contact structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209804526U true CN209804526U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920852360.2U Active CN209804526U (en) | 2019-06-06 | 2019-06-06 | Novel isolating switch contact structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN209804526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060904A (en) * | 2019-06-06 | 2019-07-26 | 现代重工(中国)电气有限公司 | A kind of New Type Isolating Switch structure of contact terminal |
-
2019
- 2019-06-06 CN CN201920852360.2U patent/CN209804526U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060904A (en) * | 2019-06-06 | 2019-07-26 | 现代重工(中国)电气有限公司 | A kind of New Type Isolating Switch structure of contact terminal |
| CN110060904B (en) * | 2019-06-06 | 2024-04-19 | 现代重工(中国)电气有限公司 | Novel isolating switch contact structure |
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