CN110853975B - Disc type contact - Google Patents
Disc type contact Download PDFInfo
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- CN110853975B CN110853975B CN201911182916.2A CN201911182916A CN110853975B CN 110853975 B CN110853975 B CN 110853975B CN 201911182916 A CN201911182916 A CN 201911182916A CN 110853975 B CN110853975 B CN 110853975B
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- contact
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- coil
- disc type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The application discloses a disc type contact, which comprises an inner contact, a disc type coil, a static conducting rod and a dynamic conducting rod; the disc type coil comprises two disc type sub-coils, and each disc type sub-coil comprises a circular groove, an edge contact circular surface, a circular curved surface and a circular curved surface which are sequentially connected; the inner contact comprises two inner contact sub-pieces; the inner contact sub-part comprises a contact blade and a supporting part, the contact blade is connected with the inner ring of the annular groove, and the supporting part is arranged between the contact blade and the circular curved surface; a plurality of chutes are arranged on the circular ring curved surface; the contact piece is provided with a plurality of radial grooves. The disc type contact provided by the embodiment of the application has the advantages of small loop resistance, high longitudinal magnetic field strength and high breaking capacity, and can effectively extinguish electric arcs, reduce burning loss of the contact and prolong the service life of the contact.
Description
Technical Field
The application relates to the technical field of contacts, in particular to a disc type contact.
Background
The vacuum circuit breaker is widely used in a power distribution network due to good vacuum insulation performance and arc extinguishing characteristics, the contact is used as the most important component in a vacuum arc extinguishing chamber of the vacuum circuit breaker, and the service life of the contact is directly influenced by the size and the arc extinguishing capacity of the loop resistance of the contact.
Therefore, how to prolong the service life of the contact becomes an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The application provides a dish formula contact to solve the short problem of life of contact among the prior art.
The application provides a disc type contact, which comprises an inner contact, a disc type coil, a static conducting rod and a dynamic conducting rod;
the disc type coil comprises two disc type sub-coils, namely a first disc type sub-coil and a second disc type sub-coil, wherein the first disc type sub-coil is symmetrical to the second disc type sub-coil about a horizontal line; the disc type sub-coil comprises a circular groove, an edge contact circular surface, a circular curved surface and a circular curved surface which are sequentially connected;
the inner contact comprises two inner contact sub-pieces, namely a first inner contact sub-piece and a second inner contact sub-piece, wherein the first inner contact sub-piece is symmetrical with the second inner contact sub-piece about a horizontal line; the inner contact sub-part comprises a contact blade and a supporting part, the contact blade is connected with the inner ring of the annular groove, and the supporting part is arranged between the contact blade and the circular curved surface;
the movable conductive rod penetrates through the circular curved surface of the first disc-type sub-coil and is connected with the contact blade of the first inner contact sub-piece;
the static conductive rod penetrates through the circular curved surface of the second disc-type sub-coil and is connected with the contact blade of the second inner contact sub-piece;
a plurality of chutes are arranged on the circular ring curved surface; the contact piece is provided with a plurality of radial grooves.
Further, the distance between the edge contact circular ring surface of the first disc-shaped sub-coil and the upper end surface of the movable conductive rod is larger than the distance between the contact blade and the upper end surface of the movable conductive rod.
Furthermore, the arrangement directions of the inclined grooves on the first disc-type sub-coil and the second disc-type sub-coil are parallel.
Further, the material of the disc coil is stainless steel material.
Further, the material of the support is stainless steel material.
Further, the material of the contact blade is CuCr.
According to the embodiments, the disc-type contact provided by the application comprises an inner contact, a disc-type coil, a static conductive rod and a dynamic conductive rod; the disc type coil comprises two disc type sub-coils, namely a first disc type sub-coil and a second disc type sub-coil, wherein the first disc type sub-coil is symmetrical to the second disc type sub-coil about a horizontal line; the disc type sub-coil comprises a circular groove, an edge contact circular surface, a circular curved surface and a circular curved surface which are sequentially connected; the inner contact comprises two inner contact sub-pieces, namely a first inner contact sub-piece and a second inner contact sub-piece, wherein the first inner contact sub-piece is symmetrical with the second inner contact sub-piece about a horizontal line; the inner contact sub-part comprises a contact blade and a supporting part, the contact blade is connected with the inner ring of the annular groove, and the supporting part is arranged between the contact blade and the circular curved surface; the movable conductive rod penetrates through the circular curved surface of the first disc-type sub-coil and is connected with the contact blade of the first inner contact sub-piece; the static conductive rod penetrates through the circular curved surface of the second disc-type sub-coil and is connected with the contact blade of the second inner contact sub-piece; a plurality of chutes are arranged on the circular ring curved surface; the contact piece is provided with a plurality of radial grooves. The disc type contact provided by the embodiment of the application has the advantages of small loop resistance, high longitudinal magnetic field strength and high breaking capacity, and can effectively extinguish electric arcs, reduce burning loss of the contact and prolong the service life of the contact.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic structural diagram of a disc contact according to an embodiment of the present disclosure;
fig. 2 is a cross-sectional view of a disc contact according to an embodiment of the present disclosure;
fig. 3 is a top view of a dish contact provided in an embodiment of the present application;
fig. 4 is a side view of a dish contact provided by an embodiment of the present application;
fig. 5 is a schematic structural diagram of a contact blade according to an embodiment of the present application.
Illustration of the drawings:
wherein 1-inner contact, 11-first inner contact sub-part, 111-contact blade, 1111-radial slot, 112-support part, 12-second inner contact sub-part, 2-disc coil, 21-first disc coil, 211-circular slot, 212-edge contact circular ring surface, 213-circular ring curved surface, 2131-skewed slot, 214-circular curved surface, 22-second disc sub-coil, 3-static conductive rod and 4-dynamic conductive rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present application provides a disc contact, which includes an inner contact 1, a disc coil 2, a static conductive rod 3, and a dynamic conductive rod 4;
specifically, the disc type contact can be applied to a vacuum circuit breaker and also can be applied to other circuit breakers.
As shown in fig. 2 and 3, the disc coil 2 includes two disc sub-coils, namely a first disc sub-coil 21 and a second disc sub-coil 22, and the first disc sub-coil 21 is symmetrical to the second disc sub-coil 22 about a horizontal line; the disc-type sub-coil comprises a circular groove 211, an edge contact circular surface 212, a circular curved surface 213 and a circular curved surface 214 which are connected in sequence;
the inner contact 1 comprises two inner contact sub-parts, namely a first inner contact sub-part 11 and a second inner contact sub-part 12, wherein the first inner contact sub-part 11 is symmetrical to the second inner contact sub-part 12 about a horizontal line; the inner contact sub-member includes a contact blade 111 and a support member 112, the contact blade 111 being connected with the inner circular ring of the circular ring slot 211.
The supporting member 112 is disposed between the contact blade 111 and the circular curved surface 214, and the material of the supporting member 112 is stainless steel.
When the dish-type contact is closed, the contact blades 111 of the two inner contact sub-members are attached together, and the impact pressure when the two contact blades 111 are attached is too large, so that the contact blades 111 are deformed, and the supporting member 112 in the embodiment of the application can play a role of buffering when the two contact blades 111 impact. The contact blade 111 is not easily damaged by the support member 112.
The movable conducting rod 4 penetrates through the circular curved surface 214 of the first disc-shaped sub-coil 21 and is connected with the contact blade 111 of the first inner contact sub-piece 11;
the static conductive rod 3 penetrates through the circular curved surface 214 of the second disc-type sub-coil 22 and is connected with the contact blade 111 of the second inner contact sub-piece 12;
as shown in fig. 4, a plurality of inclined slots 2131 are arranged on the circular curved surface 213; further, the arrangement directions of the inclined slots 2131 on the first disc-shaped sub-coil 21 and the second disc-shaped sub-coil 22 are parallel. The inclined slots 2131 are arranged in parallel, so that a longitudinal magnetic field is formed, and the arc extinguishing capability is improved.
As shown in fig. 5, the contact blade 111 is provided with a plurality of radial slots 1111, which facilitate the diffusion of electrons and ions out when the current crosses zero, and eliminate the residual magnetic field in the central portion of the contact.
Further, in order to facilitate the separation of the two contact blades 111 when the disc-type contacts are opened, the current is ensured to flow through the disc-type coil 2, and the opening of the vacuum circuit breaker is facilitated. In the embodiment of the present application, the distance between the edge contact torus 212 of the first disc-shaped sub-coil 21 and the upper end surface of the movable conductive rod 4 is greater than the distance between the contact blade 111 and the upper end surface of the movable conductive rod 4.
Referring again to fig. 2, it can be seen that the edges of the two disc-shaped sub-coils contact the torus 212 a greater distance than the two contact blades 111, and when the two edges contact the torus 212, a reaction force can be provided for the two contact blades 111 to abut, which facilitates the separation of the two contact blades 111.
Further, the material of the disc coil 2 is stainless steel material. Further, the material of the contact blade 111 is CuCr.
The contact blade 111 is made of CuCr, the disc type coil 2 is made of stainless steel materials, when the contact is closed, due to the fact that the materials are different, current directly flows through the inner contact, the current loop is short, the loop resistance is small, and the situation that the current loop is long due to the fact that the current flows through the disc type coil 2, and the loop resistance is increased is avoided.
When the disc coil 2 is actually used, deformation is caused by excessive reverse force and opening and closing impact pressure, the mechanical strength and the pressure resistance level of the contact can be reduced after the contact blade 111 is grooved, and the groove is easy to melt, so that the widths of the inclined groove 2131 and the radial groove 1111 are not too wide, and the depth is not too deep during manufacturing.
From the above embodiments, the present application provides a disc-type contact, which includes an inner contact, a disc-type coil, a static conductive rod, and a dynamic conductive rod; the disc type coil comprises two disc type sub-coils, namely a first disc type sub-coil and a second disc type sub-coil, wherein the first disc type sub-coil is symmetrical to the second disc type sub-coil about a horizontal line; the disc type sub-coil comprises a circular groove, an edge contact circular surface, a circular curved surface and a circular curved surface which are sequentially connected; the inner contact comprises two inner contact sub-pieces, namely a first inner contact sub-piece and a second inner contact sub-piece, wherein the first inner contact sub-piece is symmetrical with the second inner contact sub-piece about a horizontal line; the inner contact sub-part comprises a contact blade and a supporting part, the contact blade is connected with the inner ring of the annular groove, and the supporting part is arranged between the contact blade and the circular curved surface; the movable conductive rod penetrates through the circular curved surface of the first disc-type sub-coil and is connected with the contact blade of the first inner contact sub-piece; the static conductive rod penetrates through the circular curved surface of the second disc-type sub-coil and is connected with the contact blade of the second inner contact sub-piece; a plurality of chutes are arranged on the circular ring curved surface; the contact piece is provided with a plurality of radial grooves. The disc type contact provided by the embodiment of the application has the advantages of small loop resistance, high longitudinal magnetic field strength and high breaking capacity, and can effectively extinguish electric arcs, reduce burning loss of the contact and prolong the service life of the contact.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (5)
1. A disc type contact is characterized by comprising an inner contact (1), a disc type coil (2), a static conductive rod (3) and a movable conductive rod (4);
the disc type coil (2) comprises two disc type sub-coils, namely a first disc type sub-coil (21) and a second disc type sub-coil (22), wherein the first disc type sub-coil (21) is symmetrical to the second disc type sub-coil (22) about a horizontal line; the disc type sub-coil comprises a circular groove (211), an edge contact circular surface (212), a circular curved surface (213) and a circular curved surface (214) which are connected in sequence;
the inner contact (1) comprises two inner contact sub-parts, namely a first inner contact sub-part (11) and a second inner contact sub-part (12), wherein the first inner contact sub-part (11) is symmetrical to the second inner contact sub-part (12) about a horizontal line; the inner contact sub-element comprises a contact blade (111) and a supporting piece (112), the contact blade (111) is connected with an inner circular ring of the circular ring groove (211), and the supporting piece (112) is arranged between the contact blade (111) and the circular curved surface (214); the material of the support (112) is stainless steel material;
the movable conducting rod (4) penetrates through the circular curved surface (214) of the first disc-shaped sub-coil (21) and is connected with the contact blade (111) of the first inner contact sub-piece (11);
the static conductive rod (3) penetrates through the circular curved surface (214) of the second disc-type sub-coil (22) and is connected with the contact blade (111) of the second inner contact sub-piece (12);
a plurality of chutes (2131) are arranged on the circular curved surface (213); the contact blade (111) is provided with a plurality of radial grooves (1111).
2. Disc contact according to claim 1, wherein the distance between the edge of the first disc-shaped sub-coil (21) contacting the torus (212) and the upper end surface of the movable conducting rod (4) is greater than the distance between the contact blade (111) and the upper end surface of the movable conducting rod (4).
3. The disc contact according to claim 1, wherein the inclined slots (2131) on the first disc-shaped sub-coil (21) and the second disc-shaped sub-coil (22) are arranged in parallel.
4. Disc contact according to claim 1, characterised in that the material of the disc coil (2) is a stainless steel material.
5. Disc contact according to claim 1, characterised in that the material of the contact blade (111) is CuCr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182916.2A CN110853975B (en) | 2019-11-27 | 2019-11-27 | Disc type contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182916.2A CN110853975B (en) | 2019-11-27 | 2019-11-27 | Disc type contact |
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| Publication Number | Publication Date |
|---|---|
| CN110853975A CN110853975A (en) | 2020-02-28 |
| CN110853975B true CN110853975B (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911182916.2A Active CN110853975B (en) | 2019-11-27 | 2019-11-27 | Disc type contact |
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| Country | Link |
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| CN (1) | CN110853975B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0163593A1 (en) * | 1984-04-26 | 1985-12-04 | Siemens Aktiengesellschaft | Contact arrangement for a vacuum switch |
| US5495085A (en) * | 1992-11-10 | 1996-02-27 | Mitsubishi Denki Kabushiki Kaisha | Vacuum interrupter |
| CN1346501A (en) * | 1999-02-02 | 2002-04-24 | 阿尔斯托姆英国有限公司 | Vacuum switching device |
| CN201584356U (en) * | 2010-01-13 | 2010-09-15 | 锦州华光玻璃开关管有限公司 | Ceramic vacuum switching tube |
| CN105679597A (en) * | 2016-03-21 | 2016-06-15 | 西安交通大学 | Contact with fixed fracture and having short-circuit current breaking capability and vacuum arc extinguishing chamber |
-
2019
- 2019-11-27 CN CN201911182916.2A patent/CN110853975B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0163593A1 (en) * | 1984-04-26 | 1985-12-04 | Siemens Aktiengesellschaft | Contact arrangement for a vacuum switch |
| US5495085A (en) * | 1992-11-10 | 1996-02-27 | Mitsubishi Denki Kabushiki Kaisha | Vacuum interrupter |
| CN1346501A (en) * | 1999-02-02 | 2002-04-24 | 阿尔斯托姆英国有限公司 | Vacuum switching device |
| CN201584356U (en) * | 2010-01-13 | 2010-09-15 | 锦州华光玻璃开关管有限公司 | Ceramic vacuum switching tube |
| CN105679597A (en) * | 2016-03-21 | 2016-06-15 | 西安交通大学 | Contact with fixed fracture and having short-circuit current breaking capability and vacuum arc extinguishing chamber |
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| Publication number | Publication date |
|---|---|
| CN110853975A (en) | 2020-02-28 |
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