CN213025853U - Contact device of high-voltage circuit breaker - Google Patents
Contact device of high-voltage circuit breaker Download PDFInfo
- Publication number
- CN213025853U CN213025853U CN202022317385.8U CN202022317385U CN213025853U CN 213025853 U CN213025853 U CN 213025853U CN 202022317385 U CN202022317385 U CN 202022317385U CN 213025853 U CN213025853 U CN 213025853U
- Authority
- CN
- China
- Prior art keywords
- contact
- circuit breaker
- copper
- voltage circuit
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 229910001080 W alloy Inorganic materials 0.000 claims description 24
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 24
- 230000003746 surface roughness Effects 0.000 claims description 14
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 13
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 claims description 13
- 239000000788 chromium alloy Substances 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 10
- 239000000872 buffer Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 abstract description 9
- 239000010439 graphite Substances 0.000 abstract description 9
- -1 graphite alkene Chemical class 0.000 abstract description 9
- 238000002679 ablation Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Abstract
The utility model provides a high voltage circuit breaker contact device, its stationary contact group and mobilizable movable contact group including fixed setting, stationary contact group is including quiet main contact and quiet arc contact, movable contact group is including moving main contact and moving arc contact, the contact of quiet arc contact indicates that the front end coating has graphite alkene layer, moving arc contact is provided with around circumferencial direction evenly distributed's a plurality of moving arc contact touches and indicates, and each moving arc contact touches and indicates that the front end has graphite alkene layer coating respectively. Due to the fact that the graphene is good in conductivity, the contact resistance of the contact part of the contact is small, the heat field concentration condition of the contact part is weakened, and the arc ablation resistance of the contact is enhanced; the fault rate of the contact of the circuit breaker is reduced due to a plurality of reasons, and the service life of the circuit breaker is prolonged.
Description
Technical Field
The utility model relates to a high-voltage circuit technical field, concretely relates to high-voltage circuit breaker contact device.
Background
High voltage circuit breakers are the most important components in power systems. The circuit breaker plays a role in controlling and protecting the safe and stable operation of the power system. The control means that when a part of electric facilities and circuits in the power grid are in fault or the power grid is scheduled in the operation process, the fault part is quickly separated through the separation and the combination of a breaker and the like, and the normal operation of the part of the power grid is ensured. The conductive contact is an important component of the high-voltage cut-off equipment, and the quality of the conductive contact directly influences the safe operation of the equipment. The substrate materials adopted by the existing high-voltage circuit breaker are CuW, CuB and CuCr alloy, and the electric conductivity of the silver coating is increased. However, in actual operation, poor contact of silver plating occurs on the surface, and the electrical conductivity and the thermal conductivity of the silver cannot meet the actual requirements. The circuit breaker contact has weak arc ablation resistance, accelerated material aging, poor conductive capacity and the like. Affecting the service life and operating efficiency of the circuit breaker.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and an object of the present invention is to provide a high voltage circuit breaker contact device.
The utility model provides a high voltage circuit breaker contact device, its stationary contact group and mobilizable movable contact group including fixed setting, stationary contact group is including quiet main contact and quiet arc contact, movable contact group is including moving main contact and moving arc contact, the contact of quiet arc contact indicates that the front end coating has graphite alkene layer, moving arc contact is provided with around circumferencial direction evenly distributed's a plurality of moving arc contact touches and indicates, and each moving arc contact touches and indicates that the front end has graphite alkene layer coating respectively.
According to the utility model discloses preferred embodiment, the front end that the static contact touched the finger is made by the copper-tungsten alloy, and the rest part is made by copper-chromium alloy, graphite alkene layer coat in the surface of copper-tungsten alloy part.
According to the utility model discloses preferred embodiment, the front end that a plurality of moving contact touched the finger is made by the copper-tungsten alloy, and the rest is made by copper-chromium alloy, graphite alkene layer coat in the surface of copper-tungsten alloy part.
According to the preferred embodiment of the present invention, the thickness of the graphene layer of the static contact fingers and the plurality of moving contact fingers is 80-120 um.
According to the utility model discloses preferred embodiment, the front end structure that the static contact touched the finger is convex structure.
According to the utility model discloses preferred embodiment, a plurality of moving contact touches and indicates the inboard and is provided with the chamfer structure.
According to a preferred embodiment of the present invention, the surface roughness of the copper-tungsten alloy portion of the stationary contact finger and the portion of the copper-chromium alloy portion adjacent to the copper-tungsten alloy portion is lower than the surface roughness of other positions.
According to a preferred embodiment of the present invention, the surface roughness of the copper-tungsten alloy portion of the plurality of movable contact fingers and the portion of the copper-chromium alloy portion adjacent to the copper-tungsten alloy portion is lower than the surface roughness of the other portions.
According to the preferred embodiment of the present invention, the high-voltage circuit breaker contact device further comprises a piston and a puffer cylinder, a nozzle, and a shield for driving the movable contact group.
The electrical conductivity of graphene is 1.58 times that of silver, and the thermal conductivity is 11.65 times that of silver. Therefore, the current-conducting capacity and the heat-dissipating capacity of the breaker contact coated with the graphene layer are increased, the ablation resistance and the melting resistance of the breaker contact are improved, and the service life of the breaker is prolonged. The utility model discloses a high voltage circuit breaker contact device can improve the operational reliability of circuit breaker, and is with low costs, the structure is simple and convenient, makes the conductive ability and the heat-sinking capability promotion of circuit breaker contact, and greatly reduced circuit breaker contact improves the life of circuit breaker because of the condition that electric arc ablation damaged in the use. In actual use, due to the fact that the graphene is good in conductivity, the contact resistance of the contact part of the contact is small, the heat field concentration condition of the contact part is weakened, and the arc ablation resistance of the contact is enhanced; the fault rate of the contact of the circuit breaker is reduced due to a plurality of reasons, and the service life of the circuit breaker is prolonged.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic view of a high voltage circuit breaker contact arrangement according to an embodiment of the present invention;
fig. 2 shows a schematic view of a stationary arcing contact of a high voltage circuit breaker contact arrangement according to an embodiment of the present invention;
fig. 3 shows a schematic view of a moving arc contact of a high voltage circuit breaker contact arrangement according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
According to the utility model discloses an embodiment provides a high voltage circuit breaker contact device. As shown in fig. 1-3, the utility model discloses a high voltage circuit breaker contact device is including the fixed stationary contact group and the mobilizable movable contact group that set up, stationary contact group is including quiet main contact 1 and quiet arcing contact 2, movable contact group is including moving main contact 3 and moving arcing contact 4, the front end (the electric contact end) coating that the contact of quiet arcing contact 2 indicates 5 has graphite alkene layer 7, moving arcing contact 4 is provided with a plurality of moving arcing contacts around circumferencial direction evenly distributed and touches and indicates 6, each moving arcing contact touches and indicates 6 front end (the electric contact end) coating respectively has graphite alkene layer 8. Preferably, the thickness of the graphene layer 7 of the fixed contact finger and the graphene layer 8 of the plurality of movable contact fingers is 80-120um, and further preferably about 100 um.
According to the utility model discloses a preferred embodiment, the front end that the static contact touched and indicates 5 is made by the copper-tungsten alloy, and the rest of static contact 2 is made by copper-chromium alloy, and graphite alkene layer 7 coats in the surface of copper-tungsten alloy part. Similarly, the front ends of the plurality of movable contact fingers 6 are made of copper-tungsten alloy, the rest parts of the movable contact fingers are made of copper-chromium alloy, and the graphene layer 8 is coated on the outer surface of the copper-tungsten alloy part.
According to a preferred embodiment of the invention, the surface roughness of the copper-tungsten alloy part of the stationary contact finger 5 and of the part of the copper-chromium alloy part adjacent to this copper-tungsten alloy part is lower than the surface roughness of other locations. Preferably, the static arcing contact 2 has a total design dimension of about 210mm, and the static arcing contact finger 5 at the front end of the flange 9 has a length of about 120mm, wherein the most front part of about 20mm in length is made of a copper-chromium alloy, and is coated with the graphene layer 7. Preferably, the front end of the fixed arc contact finger 5 has a surface roughness of 1.6 μm at a section of about 50mm and a surface roughness of 3.2 μm at the remaining portion.
According to a preferred embodiment of the present invention, as shown in fig. 2, the front end of the static contact finger 5 is configured as a circular arc-shaped structure, and the transition between the circular arc-shaped structure and the contact finger main body section is provided with a chamfer, preferably, the length of the chamfer along the contact finger axis direction is about 8 mm.
According to a preferred embodiment of the present invention, the surface roughness of the copper-tungsten alloy portion of the plurality of movable contact fingers 6 and a portion of the copper-chromium alloy portion adjacent to the copper-tungsten alloy portion is lower than the surface roughness of the other portions. Preferably, the moving arcing contact 4 has a total length of about 84mm, eight moving arcing contact fingers 6 are provided, distributed evenly around the circumference, with an inner diameter of about 22 mm. As shown in fig. 3, the plurality of movable contact fingers 6 are provided with a chamfer inside, preferably the length of the chamfer in the direction of the finger axis is about 9 mm.
According to a preferred embodiment of the present invention, as shown in fig. 1, the high-voltage circuit breaker contact device further comprises a piston 10 and a puffer cylinder 11 for driving the moving contact set, a large spout 12, a small spout 13, a shield case 14, and an arc extinguishing chamber 15 containing gas.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a high voltage circuit breaker contact device, its characterized in that, is including the fixed quiet contact group and the mobilizable movable contact group that set up, quiet contact group is including quiet main contact and quiet arc contact, movable contact group is including moving main contact and moving arc contact, the contact of quiet arc contact indicates that the front end coating has graphene layer, moving arc contact is provided with a plurality of moving arc contacts around circumferencial direction evenly distributed and touches and indicates, and each moving arc contact touches and indicates that the front end coating has graphene layer respectively.
2. The contact device of the high-voltage circuit breaker according to claim 1, wherein the front end of the static contact finger is made of copper-tungsten alloy, the rest part of the static contact finger is made of copper-chromium alloy, and the graphene layer is coated on the outer surface of the copper-tungsten alloy part.
3. The high voltage circuit breaker contact arrangement as recited in claim 1, wherein the front ends of the plurality of movable contact fingers are made of a copper tungsten alloy and the remainder are made of a copper chromium alloy, the graphene layer being coated on an outer surface of the copper tungsten alloy portion.
4. The high voltage circuit breaker contact arrangement as recited in claim 1, wherein the thickness of the graphene layers of the stationary contact fingers and the plurality of movable contact fingers is 80-120 um.
5. The high-voltage circuit breaker contact device as claimed in claim 1, wherein the front end of the stationary contact finger is configured as a circular arc structure.
6. The high voltage circuit breaker contact arrangement as recited in claim 1, wherein said plurality of movable contact fingers are provided with a chamfered structure on an inner side thereof.
7. The high voltage circuit breaker contact arrangement of claim 2, wherein the surface roughness of the copper-tungsten alloy portion of the stationary contact finger and a portion of the copper-chromium alloy portion adjacent to the copper-tungsten alloy portion is lower than the surface roughness of other locations.
8. The high voltage circuit breaker contact arrangement of claim 3 wherein the copper tungsten alloy portion of the plurality of movable contact fingers and a portion of the copper chromium alloy portion adjacent the copper tungsten alloy portion have a surface roughness that is lower than a surface roughness of the other portions.
9. The high voltage circuit breaker contact arrangement as recited in claim 1, further comprising a piston and puffer cylinder for actuating the moving contact set, a spout and a shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022317385.8U CN213025853U (en) | 2020-10-16 | 2020-10-16 | Contact device of high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022317385.8U CN213025853U (en) | 2020-10-16 | 2020-10-16 | Contact device of high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213025853U true CN213025853U (en) | 2021-04-20 |
Family
ID=75480944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022317385.8U Expired - Fee Related CN213025853U (en) | 2020-10-16 | 2020-10-16 | Contact device of high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213025853U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628190A (en) * | 2021-12-21 | 2022-06-14 | 平高集团有限公司 | Arc contact for switch and circuit breaker |
| CN114628193A (en) * | 2021-12-21 | 2022-06-14 | 平高集团有限公司 | Contact assembly of arc extinguish chamber and manufacturing method of moving arc contact of arc extinguish chamber |
-
2020
- 2020-10-16 CN CN202022317385.8U patent/CN213025853U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628190A (en) * | 2021-12-21 | 2022-06-14 | 平高集团有限公司 | Arc contact for switch and circuit breaker |
| CN114628193A (en) * | 2021-12-21 | 2022-06-14 | 平高集团有限公司 | Contact assembly of arc extinguish chamber and manufacturing method of moving arc contact of arc extinguish chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |