CN220553403U - Ablation-resistant static contact - Google Patents
Ablation-resistant static contact Download PDFInfo
- Publication number
- CN220553403U CN220553403U CN202322140085.0U CN202322140085U CN220553403U CN 220553403 U CN220553403 U CN 220553403U CN 202322140085 U CN202322140085 U CN 202322140085U CN 220553403 U CN220553403 U CN 220553403U
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- current
- section
- fixedly connected
- contact
- ablation
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- 238000002679 ablation Methods 0.000 title claims abstract description 33
- 230000003068 static effect Effects 0.000 title claims description 31
- 230000007704 transition Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 14
- 229910001316 Ag alloy Inorganic materials 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 21
- 238000010891 electric arc Methods 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 229910001080 W alloy Inorganic materials 0.000 description 2
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses an ablation-resistant fixed contact, which relates to the technical field of circuit breakers and comprises a fixed contact, wherein the left side of the top of the fixed contact is provided with a power connection part, and the right side of the top of the fixed contact is provided with a fixing hole. According to the utility model, current can enter the current-carrying connecting section through the second current-carrying section at the bottom of the connecting part, so that the current enters the first current-carrying section, the support piece is in closer contact with the first current-carrying section, deformation in the riveting process is avoided, the height of the riveting boss is smaller than the depth of the riveting blind hole, a gap is formed between the support piece and the first current-carrying section due to the fact that the height of the riveting boss is too high, accidental deformation of the support piece or the first current-carrying section in the riveting process is prevented, positioning is conducted when the support piece is riveted to the second current-carrying section through the groove, an arc can be generated in the process of disassembling the fixed contact 1 and the moving contact, the arc-running piece extends towards the direction of an arc extinguishing chamber in the breaker shell, so that the arc is led to be extinguished, and the contact is usually made of silver alloy.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to an ablation-resistant fixed contact.
Background
The static contact is one of the electrical connection contacts, and the position of the static contact is fixed in the closing and breaking processes of the electrical connection, so the static contact is called as the static contact. The static contact is widely applied to various electric connection systems, in particular to various circuit breakers.
For example, chinese patent publication No. CN208028006U discloses an anti-ablation static contact assembly and an arc extinguishing system. The static contact assembly comprises a static contact and a protective bracket, wherein the static contact comprises a power connection part, a contact part, a connecting part and a static contact. The protection support comprises a drainage plate, a separation part and a cover head part which are connected in sequence. The isolation part is used for isolating the bottom plate and comprises first isolation blocks and second isolation blocks which are arranged at intervals. The drainage plate is matched with the connecting part. The cover head comprises a first arched partition plate and a second arched partition plate which are respectively covered on the shoulder parts of the support plates. The arc extinguishing system comprises an arc extinguishing chamber and a fixed contact assembly, wherein the fixed contact assembly is positioned at the bottom of the arc extinguishing chamber, and the protective bracket and the fixed contact are correspondingly arranged, so that the gap between the fixed contact and the arc extinguishing chamber is reduced, and the air blowing effect of air in the arc extinguishing chamber is enhanced. And meanwhile, the static contact is protected from being invaded by an electric arc through isolation, so that the electric arc ablation caused by high temperature is avoided.
The following problems exist in the prior art:
the existing ablation-resistant static contact, although most of generated electric arcs can be extinguished rapidly by the technology, partial electric arcs still cannot be introduced into an arc extinguishing chamber in time, so that the electric arcs overflow between the movable contact and the static contact everywhere, and when the electric arcs flow into all parts of the static contact, the electric arcs can be burnt; the existing ablation-resistant fixed contact is characterized in that gaps are formed between the fixed contact of a smaller current breaker under the same breaker shell and a base of the breaker shell due to the fact that the thickness of the fixed contact is thinner, so that the same breaker shell cannot meet the assembly requirements of the fixed contacts of two or more current breakers at the same time.
Disclosure of Invention
The utility model provides an ablation-resistant static contact to solve the problems in the background art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the ablation-resistant fixed contact comprises a fixed contact, wherein the left side of the top of the fixed contact is provided with an electric connection part, the right side of the top of the fixed contact is provided with a fixing hole, and one side of the fixed contact is fixedly connected with a connecting part; the top of the static contact is fixedly connected with an ablation-resistant section, the bottom of the ablation-resistant section is fixedly connected with a transition section, and the bottom of the transition section is fixedly connected with a mounting section.
The technical scheme of the utility model is further improved as follows: the bottom of connecting portion fixedly connected with current-carrying section two, one side fixedly connected with current-carrying linkage segment of current-carrying section two.
The technical scheme of the utility model is further improved as follows: the top of the current-carrying connecting section is fixedly connected with a current-carrying section I, and the bottom of the current-carrying section I is fixedly inserted with a riveting boss.
The technical scheme of the utility model is further improved as follows: the bottom fixedly connected with support piece of riveting boss, the recess is seted up to the bottom of support piece.
The technical scheme of the utility model is further improved as follows: the right side at the top of the current carrying section is fixedly connected with an arc running piece, and one side of the arc running piece is fixedly connected with a contact.
The technical scheme of the utility model is further improved as follows: the top fixedly connected with drainage board of connecting portion, one side fixedly connected with insulation box of drainage board, the inside fixedly connected with bars piece of insulation box, be protruding in the middle of the bars piece.
By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:
1. the utility model provides an ablation-resistant static contact, which adopts a connecting part, a current carrying section II, a current carrying connecting section, a supporting piece, a current carrying section I, a riveting boss, a groove, an arc running piece and a contact to be matched with each other, wherein current can enter the current carrying connecting section through the current carrying section II at the bottom of the connecting part, so that the current enters the current carrying section I, the supporting piece is more tightly contacted with the current carrying section I, deformation in the riveting process is avoided, the height of the riveting boss is smaller than the depth of a riveting blind hole, a gap is prevented between the supporting piece and the current carrying section I caused by the overhigh height of the riveting boss, the supporting piece or the current carrying section I is prevented from being accidentally deformed in the riveting process, the support piece is positioned when being riveted to the current carrying section II through the groove, an arc can be generated when the static contact 1 and a moving contact are disassembled, the arc running piece extends towards the direction of an arc extinguishing chamber in a breaker shell frame, and the contact is usually made of silver alloy.
2. The utility model provides an ablation-resistant static contact, which adopts the mutual coordination among a drainage plate, an isolation box, a connecting part, a current carrying section II, a connecting section and a grid sheet, wherein an electric arc is introduced into the isolation box through the drainage plate, the isolation box can better protect the connecting part and the current carrying section II from being influenced by the electric arc, and the connecting section can be protected through a transverse plate of the isolation box, so that the electric arc enters the grid sheet area after entering the isolation box, and the static contact is protected from the electric arc.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a schematic diagram of the structure of the isolation box of the present utility model;
fig. 4 is a schematic view of a static contact structure of the present utility model.
In the figure: 1. a stationary contact; 2. a power connection part; 3. a fixing hole; 4. a connection part; 5. an arc running piece; 6. a contact; 7. a current carrying section I; 8. a support; 9. riveting bosses; 10. a groove; 11. a drainage plate; 12. an isolation box; 13. a grid sheet; 14. an ablation resistant section; 15. a transition section; 16. a mounting section; 17. a current carrying connection section; 18. and a current carrying section II.
Detailed Description
The utility model is further illustrated by the following examples:
example 1
As shown in fig. 1-4, the utility model provides an ablation-resistant fixed contact, which comprises a fixed contact 1, wherein the left side of the top of the fixed contact 1 is provided with a power connection part 2, the right side of the top of the fixed contact 1 is provided with a fixed hole 3, and one side of the fixed contact 1 is fixedly connected with a connecting part 4; the top of the fixed contact 1 is fixedly connected with an ablation resistant section 14, the bottom of the ablation resistant section 14 is fixedly connected with a transition section 15, and the bottom of the transition section 15 is fixedly connected with a mounting section 16.
In this embodiment, the fixed contact 1 can be fixed through the fixing hole 3, and after the fixed contact 1 is connected with a power supply through the power connection part 2, a protective sleeve is arranged through the fixed contact 1, the protective sleeve comprises an ablation-resistant section 14, a transition section 15 and a mounting section 16, the ablation-resistant section 14 is made of copper tungsten alloy materials, the ablation-resistant capability is improved, metal ions in a fracture area in the breaking process of the arc extinguishing chamber can be reduced, the insulation strength after an arc is improved to ensure the breaking success, and therefore the fixed contact 1 is better protected.
Example 2
As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the bottom fixedly connected with current-carrying section two 18 of connecting portion 4, the one side fixedly connected with current-carrying connection section 17 of current-carrying section two 18, the top fixedly connected with current-carrying section one 7 of current-carrying connection section 17, the bottom fixedly grafting of current-carrying section one 7 has riveting boss 9, the bottom fixedly connected with support piece 8 of riveting boss 9, recess 10 has been seted up to the bottom of support piece 8, the right side fixedly connected with of current-carrying section one 7 top runs arc spare 5, the one side fixedly connected with contact 6 of running arc spare 5.
In this embodiment, the current can enter the current-carrying connection section 17 through the current-carrying section two 18 at the bottom of the connection part 4, so that the current-carrying section one 7 is entered, the support member 8 is in closer contact with the current-carrying section one 7, deformation in the riveting process is avoided, the height of the riveting boss 9 is smaller than the depth of the riveting blind hole, a gap is formed between the support member 8 and the current-carrying section one 7 caused by the too high height of the riveting boss 9, accidental deformation of the support member 8 or the current-carrying section one 7 in the riveting process is prevented, positioning is facilitated when the support member 8 is riveted to the current-carrying section two 18 through the groove 10, an arc can be generated in the disassembling process of the static contact 1 and the moving contact, the arc running member 5 extends towards the direction of the arc extinguishing chamber in the breaker housing, and the contact 6 is usually made of silver alloy.
Example 3
As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the top fixedly connected with drainage board 11 of connecting portion 4, one side fixedly connected with isolation case 12 of drainage board 11, the inside fixedly connected with bars 13 of isolation case 12, the middle arch of bars 13.
In this embodiment, the electric arc is introduced into the isolation box 12 through the drainage plate 11, the isolation box 12 can better protect the connection portion 4 and the current carrying section two 18 from being affected by the electric arc, the current carrying connection section 17 can be protected through the transverse plate of the isolation box 12, and when the electric arc enters the isolation box 12, the electric arc enters the grid 13 area, so that the static contact 1 is protected from being affected by the electric arc.
The working principle of the ablation-resistant static contact is specifically described below.
As shown in fig. 1-4, when in operation, firstly, the static contact 1 can be fixed through the fixing hole 3, then after the static contact is connected with a power supply through the power receiving part 2, current can enter the current carrying connecting section 17 through the current carrying section II 18 at the bottom of the connecting part 4, and then enter the current carrying section I7, so that the support 8 is in closer contact with the current carrying section I7, deformation in the riveting process is avoided, the height of the riveting boss 9 is smaller than the depth of the riveting blind hole, a gap exists between the support 8 and the current carrying section I7 caused by the too high height of the riveting boss 9, accidental deformation of the support 8 or the current carrying section I7 in the riveting process is prevented, an arc can be generated in the disassembling process of the static contact 1 and the moving contact through the groove 10, so that positioning is performed when the support 8 is riveted to the current carrying section II 18, the arc running piece 5 extends to the direction of an arc extinguish chamber in a breaker shell frame so as to lead the arc to be extinguished, the contact 6 is usually made of silver alloy, the arc is led into the isolation box 12 through the drainage plate 11, the isolation box 12 can better protect the connecting portion 4 and the current carrying section II 18 from being influenced by the arc, the current carrying connecting section 17 can be protected through the transverse plate of the isolation box 12, when the arc enters the isolation box 12, the arc enters the area of the grid 13 so as to protect the fixed contact 1 from the arc, the fixed contact 1 is provided with a protective sleeve, the protective sleeve comprises an ablation-resistant section 14, a transition section 15 and a mounting section 16, the ablation-resistant section 14 is made of copper-tungsten alloy, the ablation-resistant capacity is improved, metal ions in the fracture area in the arc extinguish chamber cutting-off process can be reduced, the insulation strength after the arc is improved so as to ensure cutting-off success, and the fixed contact 1 is better protected.
The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (6)
1. The utility model provides an ablation-resistant static contact, includes static contact (1), its characterized in that: the left side of the top of the fixed contact (1) is provided with a power connection part (2), the right side of the top of the fixed contact (1) is provided with a fixing hole (3), and one side of the fixed contact (1) is fixedly connected with a connecting part (4);
the top of the fixed contact (1) is fixedly connected with an ablation-resistant section (14), the bottom of the ablation-resistant section (14) is fixedly connected with a transition section (15), and the bottom of the transition section (15) is fixedly connected with a mounting section (16).
2. An ablation resistant stationary contact according to claim 1, wherein: the bottom of connecting portion (4) fixedly connected with current-carrying section two (18), one side of current-carrying section two (18) fixedly connected with current-carrying linkage segment (17).
3. An ablation resistant stationary contact according to claim 2, wherein: the top of the current-carrying connecting section (17) is fixedly connected with a current-carrying section I (7), and the bottom of the current-carrying section I (7) is fixedly inserted with a riveting boss (9).
4. A stationary contact resistant to ablation as set forth in claim 3, wherein: the bottom of riveting boss (9) fixedly connected with support piece (8), recess (10) have been seted up to the bottom of support piece (8).
5. The ablation resistant stationary contact of claim 4, wherein: the right side at the top of the current carrying section I (7) is fixedly connected with an arc running piece (5), and one side of the arc running piece (5) is fixedly connected with a contact (6).
6. An ablation resistant stationary contact according to claim 1, wherein: the top fixedly connected with drainage board (11) of connecting portion (4), one side fixedly connected with baffle box (12) of drainage board (11), the inside fixedly connected with bars piece (13) of baffle box (12), be protruding in the middle of bars piece (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322140085.0U CN220553403U (en) | 2023-08-10 | 2023-08-10 | Ablation-resistant static contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322140085.0U CN220553403U (en) | 2023-08-10 | 2023-08-10 | Ablation-resistant static contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220553403U true CN220553403U (en) | 2024-03-01 |
Family
ID=90007932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322140085.0U Active CN220553403U (en) | 2023-08-10 | 2023-08-10 | Ablation-resistant static contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220553403U (en) |
-
2023
- 2023-08-10 CN CN202322140085.0U patent/CN220553403U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |