CN213815946U - Contact structure for GIS gas insulation isolating switch - Google Patents
Contact structure for GIS gas insulation isolating switch Download PDFInfo
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- CN213815946U CN213815946U CN202120004686.7U CN202120004686U CN213815946U CN 213815946 U CN213815946 U CN 213815946U CN 202120004686 U CN202120004686 U CN 202120004686U CN 213815946 U CN213815946 U CN 213815946U
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Abstract
The utility model belongs to the technical field of power equipment, a contact structure for GIS gas insulated switchgear is disclosed, move main contact and quiet main contact including nested complex, it all adopts hollow structure to move main contact and quiet main contact, the inside of moving main contact is provided with moves vice contact and telescopic machanism, it links to each other with telescopic machanism to move vice contact, and its front end stretches out the top surface of moving main contact the inside quiet vice contact that is provided with of quiet main contact, quiet vice contact sets up with moving vice contact relatively, telescopic machanism is used for providing the contact pressure who moves between vice contact and the quiet vice contact. The utility model has the advantages of simple overall structure, the realization is convenient, low cost.
Description
Technical Field
The utility model relates to an electrical equipment's technical field especially relates to a contact structure for GIS gas insulated switchgear.
Background
GIS isolator must possess the requirement that opens and shuts the generating line switching current and open and shut generating line charging current, along with the continuous progress of high voltage technology, has proposed higher requirement to GIS isolator equipment's the current capability that opens and shuts. Usually move at isolator, can increase the arc contact of resistant ablation on the quiet contact, common arc contact adopts the plug-in type structure, divide the closing operation number of times has had more easily wearing and tearing to fall the bits, the structure is loaded down with trivial details, it is with high costs, and the sound arc contact is mostly stick-board clearance electric field structure, this belongs to extremely inhomogeneous electric field, the inhomogeneous coefficient of electric field is big, when fracture voltage is great, electric arc wafts easily on the static contact seat, can appear the contact serious ablation along with the operation number of times increases gradually, cause many times of relighting between the fracture easily simultaneously, cause VFTO to rise, give transformer substation one, the potential safety hazard is brought in the secondary equipment operation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a contact structure for GIS gas insulation isolator solves current isolator's plug-in type arc contact and easily wears and falls bits, and the structure is loaded down with trivial details, problem such as with high costs.
The utility model discloses the following technical scheme of accessible realizes:
the utility model provides a contact structure for GIS gas insulated isolator, moves main contact and quiet main contact including nested cooperation, move main contact and quiet main contact and all adopt hollow structure, the inside that moves the main contact is provided with moves vice contact and telescopic machanism, it links to each other with telescopic machanism to move vice contact, and its front end exposes in the outside of moving the main contact the inside quiet vice contact that is provided with of quiet main contact, quiet vice contact sets up with moving vice contact relatively, telescopic machanism is used for providing the contact pressure between vice contact and the quiet vice contact.
Further, telescopic machanism includes the conductor, the front end and the moving pair contact of conductor are connected, and its rear end is connected with the one end of connecting rod, the other end and the baffle through connection of connecting rod, the baffle is fixed to be set up on the inner wall that moves the main contact, the position cover of connecting rod between conductor and baffle is equipped with the spring, the one end and the conductor of spring are connected, and the other end is connected with the baffle the edge of conductor front end is provided with one or more steps, the step cooperates with the backstop piece that sets up at moving the main contact inner wall, the surface of conductor touches the inner wall electricity connection that indicates and move the main contact through the spring.
Furthermore, the rear end of the conductor is provided with a channel matched with the connecting rod and a spring on the connecting rod, an insulating sleeve is arranged at the center of the baffle, the inner diameter of the insulating sleeve is matched with the outer diameter of the connecting rod, one end of the connecting rod is arranged in the channel, and the other end of the connecting rod is arranged in the insulating sleeve.
Furthermore, the movable main contact is of a cylindrical structure, a movable channel is arranged in the movable main contact along the axial direction of the movable main contact, a static channel for accommodating the movable main contact is arranged in the static main contact, a spring contact finger is also arranged on the inner wall of the static channel, the static auxiliary contact is arranged at the center of the static channel through a conductive contact rod, and the movable auxiliary contact and the telescopic mechanism are also arranged at the center of the movable channel.
Furthermore, the surface cover of conductor is equipped with a plurality of uide bushings, through a plurality of uide bushings and the inner wall sliding connection of moving the passageway.
Furthermore, the moving pair contact and the static pair contact are both arranged in a convex trapezoid shape, and comprise a middle plane part and arc surface parts on two sides, and the plane part is provided with a metal layer made of copper-tungsten alloy.
The utility model discloses profitable technological effect lies in:
through setting up at the telescopic machanism that moves main contact inside, provide the contact pressure who moves between vice contact and the quiet vice contact, rigid contact between the two converts the flexible contact into when closing a floodgate, plays the cushioning effect, simultaneously, can also be when the separating brake for moving the separating brake helping hand that vice contact provided, realize quick separating brake to this telescopic machanism's simple structure, thereby reduced the complexity that whole touches the finger structure, it is more convenient to realize, and the suitability is stronger.
Drawings
Fig. 1 is a structural schematic diagram of the contact structure of the present invention in an open state;
fig. 2 is a schematic structural view of the rigid state of the contact structure of the present invention;
fig. 3 is a schematic structural diagram of a closing state of the contact structure of the present invention;
wherein, 1-movable main contact, 2-static main contact, 3-movable auxiliary contact, 4-static auxiliary contact, 5-conductor, 6-connecting rod, 7-baffle, 8-spring, 9-stop block, 10-spring contact finger, 11-insulating sleeve, 12-guide sleeve, and 13-confinement ring.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 and 2, the utility model provides a contact structure for GIS gas insulated switchgear, move main contact 1 and quiet main contact 2 including nested complex, should move main contact 1 and quiet main contact 2 and all adopt hollow structure, be provided with at the inside of moving main contact 1 and move vice contact 3 and telescopic machanism, should move vice contact 3 and link to each other with telescopic machanism, and its front end exposes in the outside of moving main contact 1, be provided with quiet vice contact 4 inside quiet main contact 2, should quiet vice contact 4 with move vice contact 3 and set up relatively, and mutually support, this telescopic machanism is used for providing the contact pressure between vice contact 3 and the quiet vice contact 4 of moving. Thus, the movable main contact 1 is connected with an operating mechanism in the GIS gas insulation isolating switch, under the drive of the operating mechanism, the movable main contact 1 moves towards the direction close to or far away from the static main contact 2 to realize switching-on and switching-off, when switching-on, rigid contact between the movable auxiliary contact 3 and the static auxiliary contact 4 is converted into flexible contact by virtue of contact pressure provided by the telescopic mechanism, so that a buffering effect is achieved, and then the movable main contact and the static main contact can be slowly nested and matched together, and meanwhile, the front end of the movable auxiliary contact 3 extends out of the top surface of the movable main contact 1 and is exposed outside and can be contacted with the static auxiliary contact 4 for arc extinction; during opening, the contact pressure provided by the telescopic mechanism is used for providing opening assisting force for the movable auxiliary contact, so that rapid opening between the movable main contact and the static main contact is realized.
Specifically, the movable main contact 1 may be designed to be a cylindrical structure, a movable channel is axially arranged inside the movable main contact, a static channel for accommodating the movable main contact 1 is arranged inside the static main contact 2, a spring contact finger may be arranged on an inner wall of the static channel to realize electrical connection between the movable main contact 1 and the static main contact 2, the static auxiliary contact 4 is arranged at the center of the static channel through a conductive contact rod, and the movable auxiliary contact 3 and the telescopic mechanism are also arranged at the center of the movable channel. In addition, the movable main contact 1 is also arranged in a contact seat of a barrel-shaped structure, and the surface of the movable main contact is also sleeved with a spring contact finger and a guide sleeve, so that the wear resistance and the conductivity between the movable main contact and the contact seat are improved.
The telescopic mechanism comprises a conductor 5, the front end of the conductor 5 is connected with a movable auxiliary contact 3, the rear end of the conductor is connected with one end of a connecting rod 6, the other end of the connecting rod 6 is connected with a baffle 7 in a penetrating way, the baffle 7 is fixedly arranged on the inner wall of the movable main contact 3, namely, a movable channel, a spring 8 is sleeved at the position between the conductor 5 and the baffle 7 of the connecting rod 6, one end of the spring 8 is connected with the conductor 6, the other end of the spring is connected with the baffle 7, meanwhile, one or more steps are arranged on the edge of the front end of the conductor 5, the steps are matched with a stop block 9 arranged on the inner wall of the movable main contact 3, namely, a static channel, and the surface of the conductor 5 is electrically connected with the inner wall of the movable main contact 3 through a spring contact finger 10. Therefore, when the switch is switched on, the movable auxiliary contact 3 is subjected to resistance from the static auxiliary contact 4 and moves towards the direction close to the baffle 7 through the conductor 6, the connecting rod 6 connected with the conductor 5 penetrates through the baffle 7, so that the spring 8 between the conductor 5 and the baffle 7 is compressed until the movable main contact 1 and the static main contact 2 reach the switch-on position, and the elastic force generated by the compression of the spring 8 can buffer the contact between the movable auxiliary contact 3 and the static auxiliary contact 4, and meanwhile, good contact pressure can be ensured between the movable auxiliary contact 3 and the static auxiliary contact 4, and the guarantee is provided for the electric connection between the movable auxiliary contact and the static auxiliary contact; when the brake is switched off, the elastic force generated by the compression of the spring 8 is the brake-off assisting force of the movable auxiliary contact 3, the movable auxiliary contact 3 moves towards the direction far away from the static auxiliary contact 4 under the driving of the operating mechanism, the resistance from the static auxiliary contact 4 is gradually reduced, the spring 8 is gradually extended to push the conductor 5 to gradually move towards the stop block 9 until the movable auxiliary contact 3 and the static auxiliary contact 4 are contacted, and the movable auxiliary contact 3 is separated from the static auxiliary contact 4, so that the rapid brake-off between the movable auxiliary contact 3 and the static auxiliary contact 4 and between the movable main contact 1 and the static main contact 2 is promoted.
In order to provide insulation and stability of operation, the conductor 5 may be provided at its rear end with a channel cooperating with the connecting rod 6 and the spring 8 thereon, an insulating sleeve 11 is provided in the centre of the baffle 7, the inner diameter of the insulating sleeve 11 matching the outer diameter of the connecting rod 6, so that, one end of the connecting rod 6 is arranged in the channel, the other end is arranged in the insulating sleeve 11, one end of the insulating sleeve 11 can be provided with a baffle ring, so that the baffle ring is clamped at one side of the baffle 7, a fastening ring 13 is arranged on the other side of the baffle 7 corresponding to the insulation sleeve 11, so that the insulation sleeve 11 is fixedly arranged at the center of the baffle 7, the surface of the conductor 5 can be sleeved with a plurality of guide sleeves 12, and is connected with the inner wall of the moving channel in a sliding way through the plurality of guide sleeves 12, the guide sleeve 12 may be made of a wear-resistant material to increase the wear resistance of the conductor 5 in the moving passage.
In order to improve the uniformity of an electric field between the moving pair contact and the static pair contact, the moving pair contact 3 and the static pair contact 4 are both arranged in a convex trapezoid shape, and comprise a middle plane part and arc surface parts at two sides, the middle plane part and the arc surface parts are in smooth transition, and meanwhile, a metal layer made of copper-tungsten alloy is also arranged on the plane part. Therefore, the electric arc in the opening and closing process can be guided to the copper-tungsten alloy metal layers of the movable auxiliary contact 3 and the static auxiliary contact 4 so as to reduce the ablation on the external movable and static main contacts, meanwhile, the plane part between the movable auxiliary contact 3 and the static auxiliary contact 3 can ensure that the electric field distribution between the movable auxiliary contact and the static auxiliary contact is relatively uniform, the electric field distribution between fractures is effectively improved, and the bus conversion current opening and closing capacity and the bus charging current opening and closing capacity which are higher in requirements are met.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made therein without departing from the principles and spirit of the invention, and therefore, the scope of the invention is defined by the appended claims.
Claims (6)
1. The utility model provides a contact structure for GIS gas insulated switchgear which characterized in that: the movable main contact and the static main contact are in nested fit, the movable main contact and the static main contact are both of a hollow structure, a movable auxiliary contact and a telescopic mechanism are arranged inside the movable main contact, the movable auxiliary contact is connected with the telescopic mechanism, the front end of the movable auxiliary contact is exposed outside the movable main contact, a static auxiliary contact is arranged inside the static main contact, the static auxiliary contact and the movable auxiliary contact are oppositely arranged, and the telescopic mechanism is used for providing contact pressure between the movable auxiliary contact and the static auxiliary contact.
2. The contact structure for a GIS gas insulated switchgear according to claim 1, characterized in that: telescopic machanism includes the conductor, the front end of conductor is connected with the vice contact that moves, and its rear end is connected with the one end of connecting rod, the other end and the baffle through connection of connecting rod, the baffle is fixed to be set up on the inner wall that moves the main contact, the position cover of connecting rod between conductor and baffle is equipped with the spring, the one end and the conductor of spring are connected, and the other end is connected with the baffle the edge of conductor front end is provided with one or more steps, the step cooperates with the backstop piece that sets up at the main contact inner wall that moves, the surface of conductor touches the finger through the spring and is connected with the inner wall electricity that moves the main contact.
3. The contact structure for a GIS gas insulated switchgear according to claim 2, characterized in that: the rear end of the conductor is provided with a channel matched with the connecting rod and a spring on the connecting rod, an insulating sleeve is arranged in the center of the baffle, the inner diameter of the insulating sleeve is matched with the outer diameter of the connecting rod, one end of the connecting rod is arranged in the channel, and the other end of the connecting rod is arranged in the insulating sleeve.
4. The contact structure for a GIS gas insulated switchgear according to claim 3, characterized in that: the movable main contact is of a cylindrical structure, a movable channel is arranged in the movable main contact along the axial direction of the movable main contact, a static channel for accommodating the movable main contact is arranged in the static main contact, a spring contact finger is also arranged on the inner wall of the static channel, the static auxiliary contact is arranged at the center of the static channel through a conductive contact rod, and the movable auxiliary contact and the telescopic mechanism are also arranged at the center of the movable channel.
5. The contact structure for GIS gas insulated switchgear according to claim 4, characterized in that: the surface cover of conductor is equipped with a plurality of uide bushings, moves the inner wall sliding connection of passageway through a plurality of uide bushings.
6. The contact structure for a GIS gas insulated switchgear according to claim 1, characterized in that: the movable auxiliary contact and the static auxiliary contact are both arranged in a convex trapezoid shape and comprise a middle plane part and arc surface parts on two sides, and the plane part is provided with a metal layer made of copper-tungsten alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120004686.7U CN213815946U (en) | 2021-01-04 | 2021-01-04 | Contact structure for GIS gas insulation isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120004686.7U CN213815946U (en) | 2021-01-04 | 2021-01-04 | Contact structure for GIS gas insulation isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213815946U true CN213815946U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120004686.7U Active CN213815946U (en) | 2021-01-04 | 2021-01-04 | Contact structure for GIS gas insulation isolating switch |
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| Country | Link |
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| CN (1) | CN213815946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420481A (en) * | 2022-01-06 | 2022-04-29 | 平高集团有限公司 | Isolating switch with arc extinguishing structure and moving contact component of isolating switch |
-
2021
- 2021-01-04 CN CN202120004686.7U patent/CN213815946U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420481A (en) * | 2022-01-06 | 2022-04-29 | 平高集团有限公司 | Isolating switch with arc extinguishing structure and moving contact component of isolating switch |
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