CN220710183U - Contact structure for GIS gas insulation isolating switch - Google Patents
Contact structure for GIS gas insulation isolating switch Download PDFInfo
- Publication number
- CN220710183U CN220710183U CN202322134808.6U CN202322134808U CN220710183U CN 220710183 U CN220710183 U CN 220710183U CN 202322134808 U CN202322134808 U CN 202322134808U CN 220710183 U CN220710183 U CN 220710183U
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- Prior art keywords
- contact
- seat
- movable contact
- limiting
- movable
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Links
- 238000009413 insulation Methods 0.000 title description 3
- 230000003068 static effect Effects 0.000 claims abstract description 4
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000010891 electric arc Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The embodiment of the specification relates to the technical field of isolating switches, in particular to a contact structure for a GIS gas-insulated isolating switch, which comprises: the static contact seat is connected with the first end of the isolating switch shell; the fixed contact is connected with the fixed contact seat; the first movable contact seat is connected with the second end of the isolating switch shell; the second movable contact seat is connected with the first movable contact seat through a first contact finger; the movable contact is connected with the second movable contact seat through a second contact finger, and the movable contact is arranged facing the fixed contact; the first axial end of the limiting rod is connected with the moving contact; the limiting seat is connected with the second movable contact seat, and is provided with a limiting inserting groove which is inserted into the axial second end of the limiting rod; and the spring body is sleeved with the limit rod. According to the contact structure, through the arrangement of the limiting rod, the limiting seat and the spring body, reverse supporting force can be provided for the moving contact, and the moving contact and the fixed contact can be very tightly connected.
Description
Technical Field
The embodiment of the specification relates to the technical field of isolating switches, in particular to a contact structure for a GIS gas-insulated isolating switch.
Background
The GIS is a switching device which is formed by sealing elements such as a circuit breaker, an isolating switch, a grounding switch, a current transformer, a voltage transformer, a lightning arrester, a sleeve, a bus and the like in a grounding metal shell in a combined manner and charging gas with certain pressure as an insulating and arc extinguishing medium. With the continuous improvement of the requirements of high-voltage and ultra-high voltage transmission, the GIS is more and more widely applied.
Most of the contacts of the isolating switch in the existing GIS are of plug-in type structures, and the contact wear can be caused due to the fact that the switching-on and switching-off operation times are large, so that the usability of the isolating switch is poor; the small part is in a contact type structure, although the contact type contact structure is not easy to wear, if the moving contact and the fixed contact are not in place, the current under the normal loop condition cannot be carried, and then accidents can be caused, and equipment and even staff are damaged.
Disclosure of Invention
The embodiment of the specification aims at overcoming the defects of the prior art and providing a contact structure for a GIS gas insulation isolating switch, and the arrangement of a limiting rod, a limiting seat and a spring body can provide reverse supporting force for a moving contact, so that the moving contact and a fixed contact can be very tightly connected, and further the contact structure cannot cause safety accidents caused by the fact that the moving contact and the fixed contact are not in contact.
The technical solutions of the embodiments of the present specification are as follows: a contact structure for a GIS gas-insulated disconnector, comprising:
the static contact seat is connected with the first end of the isolating switch shell;
the fixed contact is connected with the fixed contact seat;
the first movable contact seat is connected with the second end of the isolating switch shell;
the second movable contact seat is connected with the first movable contact seat through a first contact finger;
the movable contact is connected with the second movable contact seat through a second contact finger, and the movable contact is arranged facing the fixed contact;
the first axial end of the limiting rod is connected with the moving contact;
the limiting seat is connected with the second movable contact seat, and is provided with a limiting inserting groove which is inserted into the axial second end of the limiting rod;
the spring body is sleeved with the limiting rod, the first elastic end of the spring body is connected with the limiting seat, and the second elastic end of the spring body is connected with the moving contact.
Preferably, the second moving contact seat is provided with a limiting protrusion matched with the moving contact.
Preferably, the contact structure further includes:
the limiting sleeve is arranged at the bottom of the limiting inserting groove, and the sleeve opening of the limiting sleeve allows the axial second end of the limiting rod to be inserted;
the shell of the ejector rod driving motor is connected with the first movable contact seat;
the telescopic ejector rod is connected with the power output end of the ejector rod driving motor, the limiting seat is provided with a through hole matched and connected with the telescopic ejector rod, and the through hole is in butt joint with the sleeve opening of the limiting sleeve.
Preferably, the sleeve opening end of the limiting sleeve is arranged in a rounding manner.
Preferably, the fixed contact is provided with a first plane part for contacting with the moving contact, and a first arc part arranged around the first plane part;
the moving contact is provided with a second plane part used for contacting with the fixed contact and a second arc part arranged around the second plane part.
Preferably, the first plane portion and the second plane portion are each provided with a copper-tungsten layer.
Preferably, the contact structure further includes:
the shell of the moving contact seat driving motor is connected with the first moving contact seat,
the axial first end of the telescopic moving rod is connected with the power output end of the moving contact seat driving motor, and the axial second end of the telescopic moving rod is connected with the second moving contact seat.
Preferably, the fixed contact seat is provided with a first accommodating space for accommodating the fixed contact, and the first accommodating space allows part of the second movable contact seat to enter.
Preferably, the first movable contact seat is provided with a second accommodating space for accommodating the second movable contact seat.
Preferably, the second moving contact seat is provided with a third accommodating space for accommodating the moving contact, and the third accommodating space allows part of the fixed contact to enter.
Advantageous effects
The moving contact and the fixed contact of the embodiment specification are of contact type contact structures, the contact structures are not easy to wear under long-term opening and closing operation, and the contact structures of the embodiment can provide reverse supporting force for the moving contact through the arrangement of the limiting rod, the limiting seat and the spring body, so that the moving contact and the fixed contact can be very tightly connected, and further the contact structures cannot cause safety accidents due to the fact that the moving contact and the fixed contact are not in place in contact.
Further or more detailed benefits will be described in connection with specific embodiments.
Drawings
Fig. 1 is a schematic structural view of a contact structure in a first state according to an embodiment of the present disclosure;
fig. 2 is a schematic structural view of the contact structure in a second state according to the embodiment of the present disclosure;
fig. 3 is a schematic structural view of the contact structure in a third state in the embodiment of the present disclosure;
fig. 4 is a schematic structural view of the contact structure in a fourth state in the embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a moving contact seat driving motor and a telescopic moving rod in the embodiment of the present disclosure.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Embodiment one:
a contact structure for a GIS gas-insulated disconnector, as shown in fig. 1, comprising: the movable contact comprises a fixed contact seat 110, a fixed contact 120, a first movable contact seat 310, a second movable contact seat 320, a movable contact 340, a limiting rod 410, a limiting seat 420 and a spring body 430.
The stationary contact base 110 is fixedly connected with the first end of the isolating switch housing 200 through a basin insulator, and the first movable contact base 310 is fixedly connected with the second end of the isolating switch housing 200 through a basin insulator.
The stationary contact base 110 is provided with a first accommodating space for accommodating the stationary contact 120. The fixed contact 120 is located in the first accommodating space, and the tail of the fixed contact is fixedly connected with the fixed contact seat 110.
The first movable contact base 310 is provided with a second accommodating space for accommodating the second movable contact base 320. The second movable contact seat 320 is located in the second accommodating space and is connected with the first movable contact seat 310 through the first contact finger 330, and the second movable contact seat 320 can slide back and forth relative to the first movable contact seat 310 in the length direction of the first movable contact seat 310.
The second movable contact seat 320 is provided with a third accommodating space for accommodating the movable contact 340. The moving contact 340 is located in the third accommodating space and connected with the second moving contact seat 320 through the second contact finger 350, the moving contact 340 can slide back and forth relative to the second moving contact seat 320 in the length direction of the second moving contact seat 320, and the moving contact 340 faces the fixed contact 120.
The axial first end of the stop lever 410 is connected to the tail of the moving contact 340.
The limiting seat 420 is fixedly connected with the second movable contact seat 320, and the limiting seat 420 is provided with a limiting inserting groove 421 which is inserted into the axial second end of the limiting rod 410.
The spring body 430 is sleeved with the limiting rod 410, a first elastic end of the spring body 430 is connected with the limiting seat 420, and a second elastic end of the spring body 430 is connected with the moving contact 340.
As shown in fig. 1, in the contact structure in the first state (i.e., the open state), the second movable contact seat 320 is located in the second accommodating space of the first movable contact seat 310, and the movable contact 340 is located in the third accommodating space of the second movable contact seat 320, where the movable contact 340 is spaced apart from the fixed contact 120 by a certain distance.
As shown in fig. 2, when the switch needs to be closed, the contact structure first enters the second state, and the second movable contact seat 320 moves along the length direction of the first movable contact seat 310 until the movable contact 340 contacts the fixed contact 120.
As shown in fig. 3, the second movable contact block 320 is then moved into the first accommodating space, and the stationary contact 120 is moved into the second movable contact block 320. The second axial end of the limiting rod 410 abuts against the inner bottom of the limiting insertion groove 421, and the spring body 430 is compressed between the limiting seat 420 and the moving contact 340, and the moving contact 340 is in close contact with the fixed contact 120.
The moving contact 340 and the fixed contact 120 of this embodiment are contact structures, which are not easy to wear even under long-term opening and closing operation, and the contact structure of this embodiment can provide reverse supporting force for the moving contact 340 through the setting of the stop lever 410, the stop seat 420 and the spring body 430, so that the moving contact 340 and the fixed contact 120 can be very tightly connected, and further the contact structure can not generate the condition of safety accidents caused by the fact that the moving contact 340 and the fixed contact 120 are not in place in contact.
In addition, in the present embodiment, the second movable contact seat 320 is provided with a limiting protrusion 321 that is matched with the movable contact 340. The spring body 430 may deform under long-term use, so that the moving contact 340 protrudes out of the second moving contact seat 320, and further the distance between the moving contact 340 and the fixed contact 120 in the opening state is shortened, which finally affects the opening performance of the contact structure. For this reason, in the embodiment, the second movable contact seat 320 is provided with the limiting protrusion 321, and the movable contact 340 is limited by the limiting protrusion 321, so that the distance between the movable contact 340 and the fixed contact 120 in the opening state is kept unchanged, and the opening performance of the contact structure is ensured.
In addition, as shown in fig. 5, the contact structure of the present embodiment further includes: a moving contact seat driving motor 510 and a telescopic moving rod 520. The housing of the moving contact seat driving motor 510 is connected to the first moving contact seat 310. The first axial end of the telescopic moving rod 520 is connected with the power output end of the moving contact seat driving motor 510, and the second axial end of the telescopic moving rod 520 is connected with the second moving contact seat 320. The second movable contact holder 320 can be driven to move back and forth by the movable contact holder driving motor 510 and the telescopic moving rod 520.
Further, as shown in fig. 1, the contact structure of the present embodiment further includes: a stop collar 440, a ram drive motor 450 and a telescoping ram 460.
The stop collar 440 is disposed at the bottom of the stop socket 421, and the collar of the stop collar 440 allows the axial second end of the stop lever 410 to be inserted. The limiting inserting groove 421 is cylindrical, the diameter of the limiting inserting groove 421 is larger than that of the limiting rod 410, and when the spring body 430 stretches, the spring body 430 can drive the limiting rod 410 to move in the limiting inserting groove 421. And the diameter of the stop collar 440 is the same as that of the stop lever 410 or slightly larger than that of the stop lever 410, when the axial end of the stop lever 410 is inserted into the stop collar 440, the stop lever 410 cannot be directly separated from the stop collar 440 by the elastic force of the spring body 430.
The housing of the ejector rod driving motor 450 is fixedly connected with the first movable contact base 310.
The telescopic ejector rod 460 is connected with the power output end of the ejector rod driving motor 450, and the limiting seat 420 is provided with a through hole which is matched and connected with the telescopic ejector rod 460, and the through hole is in butt joint with the sleeve opening of the limiting sleeve 440.
The ejector rod driving motor 450 can drive the telescopic ejector rod 460 to extend or shorten, when the telescopic ejector rod 460 is shortened, the free end of the telescopic ejector rod 460 is located in the through hole, when the telescopic ejector rod 460 extends, the free end of the telescopic ejector rod 460 extends out of the through hole and enters the sleeve opening of the limit sleeve 440 to eject the limit rod 410 from the limit sleeve 440, and then the movable contact 340 can reset under the elastic acting force of the spring body 430.
When the second movable contact seat 320 needs to be opened, as shown in fig. 4, the contact structure drives the second movable contact seat 320 to reset, and at this time, the movable contact 340 keeps the position unchanged (relative to the position of the second movable contact seat 320) through the clamping connection between the limiting rod 410 and the limiting sleeve 440, so that the movable contact 340 can be quickly separated from the fixed contact 120 during the resetting process of the second movable contact seat 320, thereby realizing the quick opening of the contact structure.
After the second movable contact block 320 is reset, the ejector rod driving motor 450 drives the telescopic ejector rod 460 to extend so as to eject the limit rod 410 from the limit sleeve 440. After the stop lever 410 is pushed out of the stop collar 440, the moving contact 340 is reset by the elastic force of the spring body 430. Finally, the push rod driving motor 450 drives the telescopic push rod 460 to shorten so as to be positioned in the through hole.
The contact structure of this embodiment is configured by the ejector rod driving motor 450, the telescopic ejector rod 460 and the limiting sleeve 440, so that the moving contact 340 does not abut against the fixed contact 120 for a period of time and then separate from the fixed contact 120 due to the elastic force of the spring body 430 in the brake separating process of the contact structure, thereby accelerating the separation speed of the moving contact 340 and the fixed contact 120, and finally realizing the quick brake separating of the contact structure.
In addition, in this embodiment, the sleeve opening end of the stop collar 440 is rounded, so that the stop lever 410 is conveniently inserted into the stop collar 440.
Further, in the present embodiment, the fixed contact 120 is provided with a first planar portion for contacting the moving contact 340, and a first arc portion disposed around the first planar portion. The moving contact 340 is provided with a second flat surface portion for contacting the fixed contact 120, and a second arc surface portion provided around the second flat surface portion. And the first plane part and the second plane part are both provided with copper-tungsten layers.
In this embodiment, the arrangement of the first arc surface portion and the second arc surface portion enables the electric arc generated in the opening/closing process of the contact structure to be led to the first plane portion and the second plane portion, and the copper tungsten layer on the first plane portion and the second plane portion can effectively resist the electric arc, so as to avoid the static contact 120 and the moving contact 340 from being ablated by the electric arc.
The above examples are only illustrative of the preferred embodiments of the present utility model and do not limit the spirit and scope of the present utility model. Various modifications and improvements of the technical scheme of the present utility model will fall within the protection scope of the present utility model without departing from the design concept of the present utility model, and the technical content of the present utility model is fully described in the claims.
Claims (10)
1. A contact structure for a GIS gas-insulated disconnector, comprising:
the static contact seat (110) is connected with the first end of the isolating switch shell (200);
a stationary contact (120) connected to the stationary contact base (110);
a first movable contact block (310) connected to the second end of the disconnecting switch housing (200);
the second movable contact seat (320) is connected with the first movable contact seat (310) through a first contact finger (330);
the movable contact (340) is connected with the second movable contact seat (320) through a second contact finger (350), and the movable contact (340) is arranged facing the fixed contact (120);
a limit rod (410), the first axial end of which is connected with the movable contact (340);
the limiting seat (420) is connected with the second movable contact seat (320), and the limiting seat (420) is provided with a limiting inserting groove (421) which is inserted into the axial second end of the limiting rod (410);
the spring body (430) is sleeved with the limiting rod (410), a first elastic end of the spring body (430) is connected with the limiting seat (420), and a second elastic end of the spring body (430) is connected with the movable contact (340).
2. The contact structure for a GIS gas-insulated switchgear according to claim 1, wherein the second movable contact base (320) is provided with a limit protrusion (321) that is disposed in cooperation with the movable contact (340).
3. A contact structure for a GIS gas-insulated switchgear as claimed in claim 1, wherein the contact structure further comprises:
the limiting sleeve (440) is arranged at the bottom of the limiting inserting groove (421), and the sleeve opening of the limiting sleeve (440) allows the axial second end of the limiting rod (410) to be inserted;
a push rod driving motor (450), the shell of which is connected with the first movable contact seat (310);
the telescopic ejector rod (460) is connected with the power output end of the ejector rod driving motor (450), a through hole matched and connected with the telescopic ejector rod (460) is formed in the limiting seat (420), and the through hole is in butt joint with the sleeve opening of the limiting sleeve (440).
4. A contact structure for a GIS gas-insulated switchgear according to claim 3, wherein the collar end of the spacer (440) is rounded.
5. The contact structure for a GIS gas-insulated disconnector according to claim 1, characterized in that the stationary contact (120) is provided with a first planar portion for contacting the moving contact (340), and a first arc portion provided around the first planar portion;
the moving contact (340) is provided with a second planar portion for contacting the fixed contact (120), and a second arc portion provided around the second planar portion.
6. The contact structure for a GIS gas-insulated switchgear according to claim 5, wherein the first planar portion and the second planar portion are each provided with a copper-tungsten layer.
7. A contact structure for a GIS gas-insulated switchgear as claimed in claim 1, wherein the contact structure further comprises:
a movable contact seat driving motor (510), the shell of which is connected with the first movable contact seat (310),
the axial first end of the telescopic moving rod (520) is connected with the power output end of the moving contact seat driving motor (510), and the axial second end of the telescopic moving rod (520) is connected with the second moving contact seat (320).
8. The contact structure for a GIS gas-insulated switchgear according to claim 1, wherein the stationary contact base (110) is provided with a first accommodation space accommodating the stationary contact (120), and the first accommodation space allows a part of the second movable contact base (320) to enter.
9. The contact structure for a GIS gas-insulated switchgear according to claim 1, wherein the first movable contact block (310) is provided with a second accommodating space for accommodating the second movable contact block (320).
10. The contact structure for a GIS gas-insulated switchgear according to claim 1, wherein the second movable contact base (320) is provided with a third accommodating space accommodating the movable contact (340), and the third accommodating space allows a part of the fixed contact (120) to enter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322134808.6U CN220710183U (en) | 2023-08-09 | 2023-08-09 | Contact structure for GIS gas insulation isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322134808.6U CN220710183U (en) | 2023-08-09 | 2023-08-09 | Contact structure for GIS gas insulation isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220710183U true CN220710183U (en) | 2024-04-02 |
Family
ID=90439383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322134808.6U Active CN220710183U (en) | 2023-08-09 | 2023-08-09 | Contact structure for GIS gas insulation isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220710183U (en) |
-
2023
- 2023-08-09 CN CN202322134808.6U patent/CN220710183U/en active Active
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| GR01 | Patent grant |