CN215417940U - Combination system of vacuum circuit breaker contact and three-station isolating switch - Google Patents
Combination system of vacuum circuit breaker contact and three-station isolating switch Download PDFInfo
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- CN215417940U CN215417940U CN202120882408.1U CN202120882408U CN215417940U CN 215417940 U CN215417940 U CN 215417940U CN 202120882408 U CN202120882408 U CN 202120882408U CN 215417940 U CN215417940 U CN 215417940U
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- contact
- circuit breaker
- arc
- isolating
- pull rod
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- 238000002955 isolation Methods 0.000 claims abstract description 30
- 239000012212 insulator Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 230000005684 electric field Effects 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to a combined system of a vacuum circuit breaker contact and a three-station isolating switch, which comprises a metal support and an insulator, wherein a vacuum arc extinguish chamber, an isolating moving contact, a grounding contact, an isolating insulating pull rod, a circuit breaker insulating pull rod and a combined contact are arranged in the insulator, a circuit breaker moving contact seat is connected to the moving end of the vacuum arc extinguish chamber, the circuit breaker moving contact is connected with the combined contact seat and forms linkage fit with the circuit breaker insulating pull rod, two arc isolating knives are movably connected to the combined contact seat, the arc isolating knives are connected with the isolating insulating pull rod, the arc isolating knives respectively form linkage fit with the isolating moving contact and the grounding contact along with the action of the isolating insulating pull rod, a positioning pin is arranged between the two arc isolating knives, at least one arc groove is formed on the outer surface of the arc isolating knives, and an annular elastic piece is sleeved outside the two arc isolating knives. The isolation knife has the advantages of uniform structural electric field and small partial discharge, so that the insulation performance and safety of the whole switch device are improved.
Description
Technical Field
The utility model relates to the field of power transmission and distribution of a power system, in particular to a combined system of a vacuum circuit breaker contact and a three-station disconnecting switch.
Background
The dynamic connection of circuit breakers or load switches used in common solid insulation switch cabinets, gas insulation switch cabinets and the like generally adopts flexible connection, and the flexible connection has the defects of non-uniform electric field and large local discharge capacity; the common arc isolation knife is made of a rectangular or approximately rectangular copper bar or aluminum bar, the defects of non-uniform electric field and large local discharge amount still exist, a compression spring of the arc isolation knife is generally a helical compression spring or a belleville spring, and a bolt or a pin penetrates through a hole of the arc isolation knife to be compressed on the arc isolation knife, so that the non-uniformity and the local discharge of the electric field are further aggravated.
For power switches, partial discharges are a critical parameter affecting safe operation.
Disclosure of Invention
In view of the above, the present invention is directed to a combination system of a vacuum circuit breaker contact and a three-position disconnecting switch, which makes the electric field of a power switch more uniform and reduces partial discharge.
In order to achieve the above purposes, the utility model adopts a combination system of a vacuum circuit breaker contact and a three-station isolating switch, which comprises a metal bracket and an insulator fixed on the metal bracket, wherein a vacuum arc extinguish chamber, an isolating moving contact, a grounding contact, an isolating insulating pull rod and a circuit breaker insulating pull rod are arranged in the insulator, the moving end of the vacuum arc extinguish chamber is connected with the circuit breaker moving contact, a combination contact seat is also arranged in the insulator, the circuit breaker moving contact is connected with the combination contact seat and forms linkage fit with the circuit breaker insulating pull rod, the combination contact seat is movably connected with two arc isolating knives which are both connected with the isolating insulating pull rod, the arc isolating knives respectively form linkage fit with the isolating moving contact and the grounding contact along with the action of the isolating insulating pull rod, a positioning pin is arranged between the two arc isolating knives, and at least one arc groove is formed on the outer surface of the arc isolating knives, the outer sleeves of the two circular arc isolation knives are provided with annular elastic pieces, and the annular elastic pieces are respectively connected in the circular arc grooves of the two circular arc isolation knives.
The isolating knife is formed by splicing two arc isolating knives, the isolating knife is connected in arc grooves of the two arc isolating knives through the annular elastic piece, the two arc isolating knives are bound together, the annular elastic piece provides pressing force for the two arc isolating knives to play a role in pressure equalizing, and the positioning pin keeps a certain distance between the two semi-arc isolating knives. The isolation knife has the advantages of uniform structural electric field, small partial discharge, improved insulating property and safety of the whole switch device, good rigidity and strong dynamic and thermal stability.
The utility model is further arranged in a way that the cross section of the arc isolation knife is semicircular.
The electric field of the round conductor is more uniform, partial discharge is smaller, and the insulation performance and safety of the whole switch device are further improved.
This practicality further sets up to make up contact seat upper end and forms riveting portion, the lower extreme that the sword was kept apart to the circular arc forms the riveting hole, the sword is kept apart to the circular arc passes riveting hole and riveting portion location in the both sides of riveting portion through the riveting pin.
This practicality further sets up to still be provided with between the sword to keep apart the circular arc and keep apart the draw bar pin, keep apart insulating pull rod and keep apart the draw bar pin junction.
The structure is convenient for the installation of the arc isolation knife on the combined contact seat and the connection and the matching of the arc isolation knife and the isolation insulating pull rod.
This practicality further sets up to the arc groove and is provided with two, and two arc grooves are located the last lower extreme of circular arc isolation sword respectively.
This practicality further sets up that what annular elastic component adopted is that the spring is tied to the annular.
The two arc grooves are formed in the arc isolation knife, and the upper end and the lower end of the two arc isolation knives are fixed in a double mode through the annular bundling spring.
The utility model discloses a further set up to form the round hole on the combination contact seat, the round hole inner wall forms the round recess, it touches the finger to be provided with the spring in the recess, the circuit breaker moving contact is connected in the round hole, the inboard that the finger was touched to the spring is laminated mutually with the circuit breaker moving contact, and the outside that the finger was touched to the spring is laminated mutually with the recess.
The spring contact finger is fixed in the groove, and the movable contact of the circuit breaker is electrically connected with the combined contact seat through the sliding connection of the spring contact finger and the movable contact of the circuit breaker.
This practicality further sets up to be provided with a plurality of dish springs between circuit breaker moving contact and the circuit breaker insulating pull rod.
The disc spring has the following functions: even if the circuit breaker insulating pull rod is slightly loosened, a certain pressing force can be kept between the moving contact of the circuit breaker and the moving end of the vacuum arc-extinguishing chamber, and the reliability of electric connection is ensured.
The utility model is further arranged to form a contact seat mounting hole on the combined contact seat.
The contact seat mounting hole is convenient for the mounting and positioning of the combined contact seat in the insulator.
Drawings
Fig. 1 is a schematic view of the internal structure of the embodiment of the present invention.
FIG. 2 is a perspective view of a circular arc isolation knife in accordance with an embodiment of the present invention.
Fig. 3 is a side view of an arc isolation knife, a combined contact block and a movable contact of a circuit breaker according to an embodiment of the utility model.
Figure 4 is a perspective view of a modular contact block according to embodiments of the present invention.
Figure 5 is a cross-sectional view of a unitized contact block according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1-5, the utility model is a combination system of a vacuum circuit breaker contact and a three-station disconnecting switch, comprising a metal support 1 and an insulator 2 fixed on the metal support 1, wherein a vacuum arc extinguish chamber 3, an isolating moving contact 4, a grounding contact 5, an isolating insulating pull rod 6 and a circuit breaker insulating pull rod 7 are arranged in the insulator 2, a circuit breaker moving contact 8 is connected on the moving end of the vacuum arc extinguish chamber 3, a combined contact seat 9 is also arranged in the insulator 2, a contact seat mounting hole 94 is formed on the combined contact seat 9, the circuit breaker moving contact 8 is connected with the combined contact seat 9 and forms linkage fit with the circuit breaker insulating pull rod 7, two arc disconnecting knives 10 are movably connected on the combined contact seat 9, the cross sections of the arc disconnecting knives 10 are semicircular, and an isolating pull rod pin 14 is arranged between the arc disconnecting knives 10, the isolating and insulating pull rod 6 is connected with an isolating pull rod pin 14, the arc isolating knives 10 are respectively in linkage fit with the isolating moving contact 4 and the grounding contact 5 along with the action of the isolating and insulating pull rod 6, a riveting part 91 is formed at the upper end of the combined contact seat 9, riveting holes 102 are formed at the lower ends of the arc isolating knives 10, the arc isolating knives 10 are positioned at two sides of the riveting part 91 by penetrating the riveting holes 102 and the riveting part 91 through riveting pins 13, a positioning pin 11 is arranged between the two arc isolating knives 10, two arc grooves 101 are formed on the outer surfaces of the arc isolating knives 10, the two arc grooves 101 are respectively positioned at the upper and lower ends of the arc isolating knives 10, annular binding springs 12 are sleeved outside the two arc isolating knives 10, the annular binding springs 12 bind the two arc isolating knives 10 together, the annular binding springs 12 are respectively connected in the arc grooves 101 of the two arc isolating knives 10, and circular holes 92 are formed on the combined contact seat 9, the inner wall of the round hole 92 forms a circle of grooves 93, spring contact fingers 15 are arranged in the grooves 93, the breaker moving contact 8 is connected in the round hole 92, the inner sides of the spring contact fingers 15 are attached to the breaker moving contact 8, the outer sides of the spring contact fingers 15 are attached to the grooves 93, and a plurality of disc springs 16 are arranged between the breaker moving contact 8 and the breaker insulating pull rod 7.
According to the embodiment, the combined system of the vacuum circuit breaker contact and the three-station isolating switch improves the structure and the connection matching mode of the isolating knife, so that the structure electric field of the isolating knife is uniform, partial discharge is small, the insulating property and the safety of the whole switch device are improved, the rigidity of the isolating knife is good, the dynamic thermal stability is strong, and the disc spring is arranged between the moving contact of the circuit breaker and the insulating pull rod of the circuit breaker, so that a certain pressing force can be kept between the moving contact of the circuit breaker and the moving end of the vacuum arc-extinguishing chamber even if the insulating pull rod of the circuit breaker is slightly loosened, and the reliability of electric connection is ensured.
The present invention may be embodied in many other forms without departing from the spirit or essential characteristics thereof, and it should be understood that various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (9)
1. The utility model provides a combined system of vacuum circuit breaker contact and three-station isolator, includes metal support and fixes the insulator on metal support, be provided with vacuum interrupter, isolation moving contact, ground contact, isolation insulating pull rod, the insulating pull rod of circuit breaker in the insulator, vacuum interrupter's the end of moving is connected with circuit breaker moving contact, its characterized in that: still be provided with the combination contact seat in the insulator, the circuit breaker moving contact is connected with the combination contact seat and forms the linkage cooperation with circuit breaker insulating pull rod, swing joint has two circular arcs to keep apart the sword on the combination contact seat, and the circular arc is kept apart the sword and is connected with keeping apart insulating pull rod, and the circular arc is kept apart the sword and is formed the linkage cooperation with keeping apart moving contact and ground contact respectively along with keeping apart insulating pull rod action, is provided with the locating pin between two circular arcs isolation sword, form at least one circular arc groove on the surface of circular arc isolation sword, two circular arc isolation sword outside covers and is equipped with annular elastic component, annular elastic component connects respectively in the circular arc inslot of two circular arc isolation sword.
2. The combination vacuum interrupter contact and three-position disconnector according to claim 1, wherein: the cross section of the arc isolation knife is semicircular.
3. The combination vacuum interrupter contact and three-position disconnector according to claim 1, wherein: the upper end of the combined contact seat forms a riveting part, the lower end of the circular arc isolation knife forms a riveting hole, and the circular arc isolation knife passes through the riveting hole and the riveting part through a riveting pin and is positioned at two sides of the riveting part.
4. The combination vacuum interrupter contact and three-position disconnector according to claim 1, wherein: and an isolation pull rod pin is further arranged between the arc isolation knives and connected with the isolation pull rod pin.
5. The combination vacuum interrupter contact and three-position disconnector according to claim 1, wherein: the arc groove is provided with two, and two arc grooves are located the upper and lower extreme of circular arc isolation sword respectively.
6. The combination vacuum interrupter contact and three-position disconnector according to claim 1, wherein: the annular elastic part adopts an annular bundling spring.
7. The combination vacuum interrupter contact and three-position disconnector system according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: form the round hole on the combination contact seat, the round hole inner wall forms the round recess, be provided with the spring in the recess and touch the finger, the circuit breaker moving contact is connected in the round hole, the inboard that the spring touched the finger is laminated with the circuit breaker moving contact mutually, and the outside that the spring touched the finger is laminated with the recess mutually.
8. The combination vacuum interrupter contact and three-position disconnector according to claim 7, wherein: and a plurality of disc springs are arranged between the moving contact of the circuit breaker and the insulating pull rod of the circuit breaker.
9. The combination vacuum interrupter contact and three-position disconnector system according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: and a contact seat mounting hole is formed on the combined contact seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120882408.1U CN215417940U (en) | 2021-04-27 | 2021-04-27 | Combination system of vacuum circuit breaker contact and three-station isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120882408.1U CN215417940U (en) | 2021-04-27 | 2021-04-27 | Combination system of vacuum circuit breaker contact and three-station isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215417940U true CN215417940U (en) | 2022-01-04 |
Family
ID=79673210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120882408.1U Active CN215417940U (en) | 2021-04-27 | 2021-04-27 | Combination system of vacuum circuit breaker contact and three-station isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215417940U (en) |
-
2021
- 2021-04-27 CN CN202120882408.1U patent/CN215417940U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325604 Jiadong village, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Bohai Electromechanical Technology Co.,Ltd. Address before: 325604 Jiadong village, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province Patentee before: Yueqing Bohai Electromechanical Technology Co.,Ltd. |
|
| CB03 | Change of inventor or designer information |
Inventor after: Xu Minmin Inventor before: Ren Guangmin Inventor before: Xu Minmin |
|
| CP03 | Change of name, title or address |
Address after: 325604 Jiadong village, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province Patentee after: Bohai Electromechanical Technology Group Co.,Ltd. Country or region after: China Address before: 325604 Jiadong village, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province Patentee before: Zhejiang Bohai Electromechanical Technology Co.,Ltd. Country or region before: China |