CN211578634U - High-voltage disconnecting link arc-pulling-preventing device in transformer substation - Google Patents
High-voltage disconnecting link arc-pulling-preventing device in transformer substation Download PDFInfo
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- CN211578634U CN211578634U CN202020462731.9U CN202020462731U CN211578634U CN 211578634 U CN211578634 U CN 211578634U CN 202020462731 U CN202020462731 U CN 202020462731U CN 211578634 U CN211578634 U CN 211578634U
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Abstract
The utility model provides an arc-pulling-proof device of a high-voltage disconnecting link in a transformer substation, which comprises an arc-proof cover main body, an installation base and a reset mechanism, wherein the arc-proof cover main body is movably connected with the installation base; the reset mechanism comprises a reset bin and a reset spring, and the reset bin is arranged at the joint of the arc-proof shield main body and the mounting base; the reset spring is arranged in the reset bin, one end of the reset spring is connected with the arc-proof cover main body, and the other end of the reset spring is connected with the mounting base. The utility model provides an arc device is prevented drawing by high-pressure switch in transformer substation, when two contacts of high-pressure switch separate, the arc shield main part is closed fast under reset spring's effect, forms one between two contacts and separates the fender, makes the electric distance between two contacts increase fast to the increase arcing degree of difficulty reduces the arcing risk.
Description
Technical Field
The utility model relates to an electric power safety protective equipment field, more specifically relates to an arc device is prevented drawing by high-pressure switch in transformer substation.
Background
High voltage disconnecting links are a common type of power distribution equipment. A large amount of high-voltage disconnecting link equipment exists in an existing conventional transformer substation, when the high-voltage disconnecting link is broken or is operated by mistake, the phenomenon that the disconnecting link is pulled to be in an arc state with load can occur, and great risks exist for equipment and operators. However, at present, the main measure for the arcing of the high-voltage disconnecting link is management and control, and no special equipment for preventing the arcing of the high-voltage disconnecting link exists in the existing market.
SUMMERY OF THE UTILITY MODEL
The utility model provides an arc-drawing-proof device for a high-voltage switch in a transformer substation, which overcomes the technical defect of arc striking of the high-voltage switch.
In order to solve the technical problem, the technical scheme of the utility model as follows:
an arc-pulling-proof device of a high-voltage disconnecting link in a transformer substation comprises an arc-pulling-proof cover main body, a mounting base and a reset mechanism, wherein the arc-pulling-proof cover main body is movably connected with the mounting base; the reset mechanism comprises a reset bin and a reset spring, and the reset bin is arranged at the joint of the arc-proof shield main body and the mounting base; the reset spring is arranged in the reset bin, one end of the reset spring is connected with the arc-proof cover main body, and the other end of the reset spring is connected with the mounting base.
In the scheme, when the two contacts of the high-voltage disconnecting link are separated, the arc-proof cover main body is quickly closed under the action of the reset spring, and a separation block is formed between the two contacts, so that the electrical distance between the two contacts is quickly increased, the arcing difficulty is increased, and the arcing risk is reduced; when the high-voltage disconnecting link arcs, because the arc shield main body is closed, a relatively closed space is formed, the arc is blown to be long quickly, the angle is deviated quickly, after the arc light is further lengthened quickly, the recovery of the air insulation resistance between the two contacts is accelerated, and the function of arc extinguishing is realized.
Preferably, the arc protection cover main body adopts an insulating structure.
In the scheme, the arc protection cover main body is made of high-temperature-resistant insulating materials.
Preferably, the arc-proof cover main body is of a C-shaped structure with long and short edges, the short edges are movably connected with the mounting base, the tail end of each long edge is provided with a push-open handle, and when the high-voltage disconnecting link is switched on, the contact of the high-voltage disconnecting link can push the push-open handle to cause the arc-proof cover main body and the mounting base to rotate relatively, so that the switching-on stroke of the high-voltage disconnecting link is realized.
In the scheme, the size of the arc-proof shield main body is larger than that of the contact; the long edge of the arc-proof cover main body ensures that a relatively insulated closed space protection contact with enough size can be provided when the arc-proof cover main body is closed; the end of the long edge of the arc-proof cover main body is provided with a push-open handle, when the high-voltage disconnecting link is switched on, the contact of the high-voltage disconnecting link can push the push-open handle to cause the arc-proof cover main body and the mounting base to rotate relatively, and the switching-on stroke of the high-voltage disconnecting link is realized; the short edge of the arc shield main body is used for keeping the distance between the side edge of the arc shield main body and the contact, collision is reduced, meanwhile, the phenomenon that the temperature of the arc shield main body is too high due to contact with the arcing contact is reduced, and the service life of the arc shield main body is prolonged.
Preferably, the mounting base is provided with a mounting hole for mounting a contact arm of the high-voltage disconnecting link.
In the scheme, the position, close to the contact, on the contact arm is fixed in the mounting hole during mounting, so that a reliable mounting mode is realized.
Preferably, the mounting base is of a two-piece assembling structure and is fixedly connected with the mounting base through bolts.
In the above scheme, two splicing structures are adopted and fixedly connected by bolts, so that the field installation is convenient.
Preferably, the outer edge of the mounting base is designed to be rounded.
In the above-mentioned scheme, the outward flange of installation base adopts the fillet design to reduce point discharge probability.
Preferably, the reset mechanism further comprises a step gear, and the step gear is arranged in the reset bin and is fixedly connected with the short edge of the arc-proof shield main body.
Preferably, more specifically, one side of the installation base, which is close to the arc-proof shield main body, is provided with a limit baffle for cooperating with the step gear to limit the reset position of the arc-proof shield main body.
In the above scheme, the limit baffle is matched with the step gear to limit the reset position of the arc shield main body.
Preferably, the step gear and the limit baffle are provided with spring mounting holes for fixing two ends of the reset spring.
In the above scheme, the two ends of the reset spring are respectively fixed on the step gear and the limiting baffle through the spring mounting holes, so that the reset spring provides elastic force for resetting of the arc-proof shield main body and the mounting base, namely, when the protective shield main body needs to be closed, the reset spring provides power, and an external power supply is not needed.
Preferably, the arc protection cover main body is movably connected with the mounting base through a bolt.
In the above scheme, the bolt is movably connected, so that the relative rotation of the arc protection cover main body and the installation base is realized, and the installation and the disassembly are convenient.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:
the utility model provides an arc-pulling-proof device for a high-voltage disconnecting link in a transformer substation, when two contacts of the high-voltage disconnecting link are separated, an arc-proof cover main body is quickly closed under the action of a reset spring, a baffle is formed between the two contacts, and the electrical distance between the two contacts is quickly increased, so that the arcing difficulty is increased, and the arcing risk is reduced; when the high-voltage disconnecting link arcs, because the arc shield main body is closed, a relatively closed space is formed, the arc is blown to be long quickly, the angle is deviated quickly, after the arc light is further lengthened quickly, the recovery of the air insulation resistance between the two contacts is accelerated, and the function of arc extinguishing is realized.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an overall explosion three-dimensional oblique top view of the utility model;
fig. 3 is a three-dimensional oblique bottom view of the whole explosion of the utility model;
fig. 4 is a schematic view of the effect of the closed state of the present invention;
fig. 5 is a schematic view illustrating an effect of the open state of the present invention;
wherein: 1. an arc chute body; 11. pushing the handle open; 2. installing a base; 21. mounting holes; 22. a limit baffle; 3. a reset mechanism; 31. resetting the bin; 32. a return spring; 33. a step gear; 4. and a spring mounting hole.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
As shown in fig. 1-5, an arc-pulling prevention device for a high-voltage disconnecting link in a transformer substation comprises an arc-pulling prevention cover main body 1, a mounting base 2 and a reset mechanism 3, wherein the arc-pulling prevention cover main body 1 is movably connected with the mounting base 2; the reset mechanism 3 comprises a reset bin 31 and a reset spring 32, and the reset bin 31 is arranged at the joint of the arc-proof shield main body 1 and the installation base 2; the reset spring 32 is arranged in the reset bin 31, one end of the reset spring 32 is connected with the arc-proof shield main body 1, and the other end of the reset spring is connected with the installation base 2.
In the implementation process, when the two contacts of the high-voltage disconnecting link are separated, the arc-proof cover main body 1 is quickly closed under the action of the reset spring 32, a separation block is formed between the two contacts, and the electrical distance between the two contacts is quickly increased, so that the arcing difficulty is increased, and the arcing risk is reduced; when the high-voltage disconnecting link arcs, because the arc shield main body 1 is closed, a relatively closed space is formed, the arc is blown to be long quickly, the angle is deviated quickly, after the arc light is further lengthened quickly, the recovery of the air insulation resistance between the two contacts is accelerated, and the function of arc extinguishing is realized.
More specifically, the arc protection cover main body 1 adopts an insulating structure.
In the implementation process, the arc protection cover main body 1 is made of high-temperature-resistant insulating materials.
More specifically, the arc protection cover main body 1 is of a C-shaped structure with long and short edges, the short edges are movably connected with the mounting base 2, the long edge tail end of the arc protection cover main body is provided with a push-open handle 11, when the high-voltage disconnecting link is switched on, a contact of the high-voltage disconnecting link can push the push-open handle 11 to cause the arc protection cover main body 1 and the mounting base 2 to rotate relatively, and the switching-on stroke of the high-voltage disconnecting link is achieved.
In the implementation process, the size of the arc-proof shield main body 1 is larger than that of the contact; the long edge of the arc-proof shield main body 1 ensures that a relatively insulated closed space protection contact with enough size can be provided when the arc-proof shield main body 1 is closed; the end of the long side of the arc-proof cover main body 1 is provided with a push-open handle 11, when the high-voltage disconnecting link is switched on, a contact of the high-voltage disconnecting link can push the push-open handle 11 to cause the arc-proof cover main body 1 and the mounting base 2 to rotate relatively, so that the switching-on stroke of the high-voltage disconnecting link is realized; the short edge of the arc protection cover main body 1 is used for keeping the distance between the side edge of the arc protection cover main body 1 and a contact, so that the collision is reduced, meanwhile, the contact with the arcing contact is reduced, the temperature of the arc protection cover main body 1 is too high, and the service life of the arc protection cover main body 1 is prolonged.
More specifically, the mounting base 2 is provided with a mounting hole 21 for mounting a contact arm of a high-voltage disconnecting link.
In the implementation process, the position, close to the contact, on the contact arm is fixed in the mounting hole 21 during mounting, so that a reliable mounting mode is realized.
More specifically, the mounting base 2 adopts a two-piece assembling structure and is fixedly connected by bolts.
In the implementation process, two pieces of assembled structures are adopted and fixedly connected through bolts, so that the field installation is convenient.
More specifically, the outer edge of the mounting base 2 is designed to be rounded.
In the implementation process, the outer edge of the mounting base 2 adopts a round corner design to reduce the probability of point discharge.
More specifically, the reset mechanism 3 further comprises a step rail 33, and the step rail 33 is arranged in the reset bin 31 and is fixedly connected with the short side of the arc-proof shield main body 1.
More specifically, one side of the installation base 2, which is close to the arc-proof shield main body 1, is provided with a limit baffle 22, which is used for cooperating with the step 33 to limit the reset position of the arc-proof shield main body 1.
In the implementation process, the limit baffle 22 is matched with the step gear 33 to limit the reset position of the arc protection cover main body 1.
More specifically, the step 33 and the limit stop 22 are both provided with spring mounting holes 214 for fixing both ends of the return spring 32.
In the implementation process, the two ends of the return spring 32 are respectively fixed on the step 33 and the limit baffle 22 through the spring mounting hole 214, so that the return spring 32 provides elastic force for the resetting of the arc-proof shield main body 1 and the mounting base 2, namely when the shield main body needs to be closed, the return spring 32 provides power, and an external power supply is not needed.
More specifically, the arc protection cover main body 1 is movably connected with the mounting base 2 through bolts.
In the implementation process, the arc protection cover main body 1 is movably connected with the installation base 2 through bolts, so that the arc protection cover main body and the installation base are relatively rotated, and meanwhile, the arc protection cover is convenient to install and disassemble.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The arc-pulling-proof device for the high-voltage disconnecting link in the transformer substation is characterized by comprising an arc-pulling-proof cover main body (1), a mounting base (2) and a reset mechanism (3), wherein the arc-pulling-proof cover main body (1) is movably connected with the mounting base (2); the reset mechanism (3) comprises a reset bin (31) and a reset spring (32), and the reset bin (31) is arranged at the joint of the arc-proof shield main body (1) and the mounting base (2); the reset spring (32) is arranged in the reset bin (31), one end of the reset spring (32) is connected with the arc-proof shield main body (1), and the other end of the reset spring is connected with the installation base (2).
2. The device for preventing the arc-pulling of the high-voltage disconnecting link in the substation according to claim 1, wherein the arc-proof cover main body (1) adopts an insulating structure.
3. The device for preventing the arc-pulling of the high-voltage disconnecting link in the transformer substation according to claim 1, wherein the arc-proof cover main body (1) is of a C-shaped structure with long and short sides, the short sides of the arc-proof cover main body are movably connected with the mounting base (2), the long-side tail end of the arc-proof cover main body is provided with a push-away handle (11), and when the high-voltage disconnecting link is switched on, a contact of the high-voltage disconnecting link can push the push-away handle (11) to cause the arc-proof cover main body (1) and the mounting base (2) to rotate relatively, so that the switching-on stroke of the high.
4. The device for preventing the arc-pulling of the high-voltage disconnecting link in the substation according to claim 1, wherein the mounting base (2) is provided with a mounting hole (21) for mounting a contact arm of the high-voltage disconnecting link.
5. The device for preventing the arc-pulling of the high-voltage disconnecting link in the transformer substation according to claim 1, wherein the mounting base (2) is of a two-piece assembled structure and is fixedly connected by bolts.
6. The device for preventing the arc-pulling of the high-voltage disconnecting link in the substation according to claim 1, is characterized in that the outer edge of the mounting base (2) adopts a round-angle design.
7. The device for preventing the arc-pulling of the high-voltage disconnecting link in the substation according to claim 1, wherein the reset mechanism (3) further comprises a step gear (33), and the step gear (33) is arranged in the reset bin (31) and is fixedly connected with the short side of the arc-proof cover main body (1).
8. The device for preventing the arc-pulling of the high-voltage disconnecting link in the substation according to claim 7, wherein a limit baffle (22) is arranged on one side of the installation base (2) close to the arc-proof cover main body (1) and used for matching with the step gear (33) to limit the reset position of the arc-proof cover main body (1).
9. The device for preventing the arc-pulling of the high-voltage disconnecting link in the substation according to claim 8, wherein the step rail (33) and the limit baffle (22) are provided with spring mounting holes (4) for fixing two ends of the return spring (32).
10. The device for preventing the arc-pulling of the high-voltage disconnecting link in the transformer substation according to claim 1, wherein the arc-proof cover main body (1) is movably connected with the mounting base (2) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020462731.9U CN211578634U (en) | 2020-04-01 | 2020-04-01 | High-voltage disconnecting link arc-pulling-preventing device in transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020462731.9U CN211578634U (en) | 2020-04-01 | 2020-04-01 | High-voltage disconnecting link arc-pulling-preventing device in transformer substation |
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| Publication Number | Publication Date |
|---|---|
| CN211578634U true CN211578634U (en) | 2020-09-25 |
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| CN202020462731.9U Active CN211578634U (en) | 2020-04-01 | 2020-04-01 | High-voltage disconnecting link arc-pulling-preventing device in transformer substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354595A (en) * | 2020-04-01 | 2020-06-30 | 广东电网有限责任公司 | High-voltage disconnecting link arc-pulling-preventing device in transformer substation |
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2020
- 2020-04-01 CN CN202020462731.9U patent/CN211578634U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354595A (en) * | 2020-04-01 | 2020-06-30 | 广东电网有限责任公司 | High-voltage disconnecting link arc-pulling-preventing device in transformer substation |
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