CN110071010B - Solid-sealed polar pole with gas buffering device - Google Patents
Solid-sealed polar pole with gas buffering device Download PDFInfo
- Publication number
- CN110071010B CN110071010B CN201910283126.7A CN201910283126A CN110071010B CN 110071010 B CN110071010 B CN 110071010B CN 201910283126 A CN201910283126 A CN 201910283126A CN 110071010 B CN110071010 B CN 110071010B
- Authority
- CN
- China
- Prior art keywords
- pole
- gas
- driving coil
- repulsion
- solid
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H01H33/662—Housings or protective screens
-
- 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
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses an embedded pole with a gas buffering device, which comprises a static end wiring end, a pole shell, a vacuum arc extinguish chamber, an electric connection conductor, a moving end wiring end, a repulsion plate, a closed air chamber, a gas buffering side wall, a moving conducting rod, an insulating pull rod, a connecting rod, a switching-off driving coil, a sliding sealing device, an air outlet, a switching-on driving coil, a bistable retaining structure and epoxy resin, wherein the static end wiring end is connected with the pole shell; the invention can effectively reduce the effective parts of the vacuum circuit breaker of the electromagnetic repulsion mechanism, form the solid-sealed polar pole, realize the actual effect of integration and improve the insulating strength; the solid-sealed polar pole is applied to the vacuum circuit breaker, is convenient to use, portable and flexible, is simple to maintain, can realize the partition and disassembly of the three polar poles in the application of the three vacuum circuit breakers, and has the advantage of portability. And a gas buffer structure is added into the solid-sealed polar pole, so that the traditional oil buffer part is omitted, the mechanical collision in the use process is reduced, the service life is prolonged, and the structural reliability is enhanced.
Description
Technical Field
The invention belongs to the field of vacuum circuit breakers, and relates to a solid-sealed pole with a gas buffering device.
Background
The vacuum circuit breaker is an important device in power equipment, and the breaking capacity of different voltage grades is realized by applying a vacuum arc extinguishing technology. The vacuum arc-extinguishing chamber, the electromagnetic repulsion operating mechanism and the buffer device are simultaneously embedded into a solid insulating material to form a solid-sealed polar pole, so that the solid-sealed polar pole is an integral component with simple and compact structure. The modularized design is a typical characteristic of the solid-sealed pole, the overall reliability of the circuit breaker is improved by the integrated design mode, and meanwhile, the circuit breaker has higher insulating capability and improves the overall insulating strength.
Chinese patent document "CN 202487485U" discloses a vacuum circuit breaker pole, which comprises a porcelain bottle, a conductive clip, a vacuum arc-extinguishing chamber, a wire outlet terminal arranged in the vacuum arc-extinguishing chamber, a moving contact and a static contact arranged in the vacuum arc-extinguishing chamber, and an oil buffer in the porcelain bottle, so as to form a circuit breaker pole, and effectively avoid the problem that the circuit breaker is exposed in the air environment for a long time and is polluted by external dust and moisture. Chinese patent document "CN 202796714U" discloses a solid-sealed high-voltage circuit breaker pole, including epoxy resin casing, go up the seat of being qualified for the next round of competitions, vacuum interrupter, lower seat of being qualified for the next round of competitions, first screw rod, insulating pull rod and second screw rod structure, vacuum interrupter inlays and locates in the epoxy resin casing, and each structure forms the module setting to eliminate some assembly positioning errors, improve the product precision, guarantee product uniformity, stability make the product move more steadily, also improve production efficiency simultaneously greatly. Chinese patent document "CN 105428142A" discloses a circuit breaker and a solid-sealed polar pole thereof, which comprises an upper outgoing line, an arc extinguish chamber, a lower outgoing line, an assembly hole, a movable end conducting rod, and an annular contact finger arranged between the outer peripheral surface of the movable end conducting rod and the wall surface of the assembly hole, wherein the contact finger is provided with a graphite layer, and the graphite layer is positioned on the contact finger or is in guiding movement fit with the contact finger along the up-down direction, thereby providing a solid-sealed polar pole with small friction between the movable end and the lower outgoing line. British patent document "GB 2531935A" discloses three independent self-driven breaker poles for a vacuum circuit breaker.
In conclusion, the existing solid-sealed polar pole for the vacuum circuit breaker effectively improves the insulating property of the vacuum circuit breaker, realizes the integrated design of products, and improves the product performance and reliability, but the ubiquitous problem is that the existing solid-sealed polar pole is not provided with an integrated buffer structure in the polar pole design or uses a more traditional oil buffer for buffering, and a movable part is buffered at the tail of the switching-on and switching-off stroke. However, the damping characteristic of the oil damper is that the higher the speed is, the larger the damping force is provided, and therefore, when the electromagnetic repulsion operating mechanism collides with the oil damper at a higher speed, a great mechanical impact force is generated, which affects the mechanical characteristic of the electromagnetic repulsion operating mechanism and reduces the service life thereof. Meanwhile, in order to absorb the kinetic energy of the electromagnetic repulsion operating mechanism, the oil buffer used also increases the design size of the electromagnetic repulsion operating mechanism. The gas buffer structure has no mechanical process compared with an oil buffer, the device size is smaller, the occupied area of the operating mechanism is reduced, the operation is flexible and convenient, the maintenance is simple, and meanwhile, the reliability is higher.
According to the invention, the gas buffering device is added in the integrated design, and the gas buffering and the insulation division of the vacuum arc-extinguishing chamber are realized by taking the epoxy resin as a medium, so that the insulation performance and the use reliability of the circuit breaker are effectively improved, the effects of portability, flexibility and simple maintenance of the product are realized, a higher integrated and modular design mode of a circuit breaker pole is completed, the opening performance of the circuit breaker is further improved by the application of the gas buffering device, and the reliability is enhanced.
Disclosure of Invention
The invention aims to provide a solid-sealed polar pole with a gas buffer structure, which applies the gas buffer structure of an electromagnetic operating mechanism to the solid-sealed polar pole, simplifies the structure of a circuit breaker, perfects the modular design, improves the insulating strength, overcomes the defects of an oil buffer, reduces mechanical collision in the operating process, enhances the overall reliability and prolongs the service life.
In order to achieve the purpose, the invention adopts the following technical scheme:
a solid-sealed polar pole with a gas buffering device comprises a polar pole shell 2, a vacuum arc-extinguishing chamber 3 arranged in the polar pole shell 2, a static terminal wiring end 1 and a dynamic terminal wiring end 5 which are fixed on the polar pole shell 2, wherein the static terminal wiring end 1 is connected with the static terminal of the vacuum arc-extinguishing chamber 3 through an electric connecting conductor 4, and the dynamic terminal wiring end 5 is connected with a dynamic conducting rod 9 of the vacuum arc-extinguishing chamber 3 through the electric connecting conductor 4; the repulsion plate 6, the closed air chamber 7, the side wall 8, the connecting rod 11, the opening driving coil 12, the sliding sealing device 13, the air outlet 14 and the closing driving coil 15 form an air buffer device, the connecting rod 11 is connected with a movable conducting rod 9 of the vacuum arc extinguish chamber 3 through an insulating pull rod 10, a repulsion plate 6 is arranged on the connecting rod 11, an opening driving coil 12 is fixed above the repulsion plate 6 through the supporting effect of a gas buffering side wall 8, a closing driving coil 15 is fixed below the repulsion plate 6 through the supporting effect of the gas buffering side wall 8, sliding sealing devices 13 are respectively arranged between the outer periphery of the connecting rod 11 and the inner wall of the opening driving coil 12 and between the outer periphery of the connecting rod 11 and the inner wall of the closing driving coil 15, the sliding sealing devices 13, the opening driving coil 12, the closing driving coil 15 and the gas buffering side wall 8 enclose a closed air chamber 7, and the lower end of the gas buffering device is connected with; the vacuum arc-extinguishing chamber 3, the electric connecting conductor 4, the bistable retaining structure 16 and the gas buffer device are poured by epoxy resin 17 and fixed in the pole inner shell together to form the solid-sealed pole with the gas buffer structure.
A gas buffer device is added, an electromagnetic repulsion mechanism is connected through a static end wiring end 1 and a moving end wiring end 5 on a pole shell 2 to perform opening and closing operations, when the electromagnetic repulsion mechanism performs opening operations, the repulsion plate 6, a connecting rod 11, an insulating pull rod 10 and a moving conducting rod 9 which are connected with the repulsion plate are subjected to vertical downward accelerated motion under the action of electromagnetic repulsion generated by an opening driving coil 12, a closed gas chamber 7 of the gas buffer device is compressed, and buffer resistance from bottom to top is generated; when the closing operation is carried out, the repulsion plate 6, the connecting rod 11, the insulating pull rod 10 and the movable conducting rod 9 which are connected with the repulsion plate are accelerated vertically and upwards under the action of electromagnetic repulsion generated by the closing driving coil 15, the closed air chamber 7 of the gas buffering device is compressed, and a buffering resistance from top to bottom is generated; the bistable holding structure 16 is used to hold an opening/closing position when an opening/closing operation is performed.
The bi-stable retention structure 16 is a belleville spring having bi-stable characteristics.
The application of the solid-sealed pole with the gas buffer structure is applied to a vacuum circuit breaker, and when the solid-sealed pole is applied to a three-phase vacuum circuit breaker, each phase of the solid-sealed pole can be subjected to portable segmentation, installation and disassembly, and the solid-sealed pole is simple to maintain, flexible and convenient.
The invention has the beneficial effects that:
1. compared with the prior art, the invention combines the electromagnetic repulsion force operated gas buffer device and the vacuum arc-extinguishing chamber in one solid-sealed polar pole, has extremely high insulating strength, reduces the influence of the external environment on the vacuum arc-extinguishing chamber, simultaneously realizes the structure integrated design, and has the gas buffer structure arranged below the solid-sealed polar pole, thereby greatly reducing the integral occupied area of the mechanism, and having compact structure and high reliability.
2. Compared with the traditional oil buffer, the gas buffer device uses the electromagnetic repulsion plate and the sliding sealing device as the piston of the gas buffer device, uses gas as a buffer medium, has no mechanical collision between the parts, and prolongs the service life of the gas buffer device.
3. The integrated design of the solid-sealed pole is applied to the vacuum circuit breaker, the three-phase pole can be cut apart and disassembled in the application of the three-phase vacuum circuit breaker, the portable advantage is played, the integrated design is flexible and convenient in use and simple in maintenance, the reliability and stability of the circuit breaker in the using process are improved, the requirements of an electric power system on the economy and reliability of the circuit breaker are met, and the continuity of power supply operation is greatly improved.
Drawings
FIG. 1 shows a solid-sealed polar pole with a gas buffer device according to the present invention
The device comprises a static end wiring end 1, a pole column shell 2, a vacuum arc-extinguishing chamber 3, an electric connection conductor 4, a movable end wiring end 5, a repulsive force disc 6, a closed air chamber 7, a gas buffer side wall 8, a movable conducting rod 9, an insulating pull rod 10, a connecting rod 11, a switching-off driving coil 12, a sliding sealing device 13, an air outlet hole 14, a switching-on driving coil 15, a bistable retaining structure 16 and epoxy resin 17.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, an embedded pole with a gas buffering device comprises a pole housing 2, a vacuum arc-extinguishing chamber 3 arranged in the pole housing 2, a static terminal 1 fixed on the pole housing 2 and a dynamic terminal 5, wherein the static terminal 1 is connected with a static end of the vacuum arc-extinguishing chamber 3 through an electric connecting conductor 4, and the dynamic terminal 5 is connected with a dynamic conducting rod 9 of the vacuum arc-extinguishing chamber 3 through the electric connecting conductor 4; the repulsion plate 6, the closed air chamber 7, the side wall 8, the connecting rod 11, the opening driving coil 12, the sliding sealing device 13, the air outlet hole 14 and the closing driving coil 15 form an air buffer device, the connecting rod 11 of the air buffer device is connected with the movable conducting rod 9 of the vacuum arc-extinguishing chamber 3 through the insulating pull rod 10, the repulsion plate 6 is connected with the connecting rod 11, in the air buffer device, the opening driving coil 12 is fixed above the repulsion plate 6 through the supporting action of the air buffer side wall 8, the closing driving coil 15 is fixed below the repulsion plate 6 through the supporting action of the air buffer side wall 8, the air outlet hole 14 is arranged on the air buffer side wall 8, the sliding sealing device 13 is respectively arranged between the outer periphery of the connecting rod 11 and the inner wall of the opening driving coil 12 and between the inner walls of the closing driving coil 15, the sliding sealing device 13, the opening driving coil 12, the closing driving coil 15 and the, the lower end of the gas buffer device is connected with the bistable retaining structure 16 and is jointly fixed in the embedded pole inner shell to form the embedded pole with the gas buffer device.
The bi-stable retention structure 16 is a belleville spring having bi-stable characteristics.
The static end wiring end 1 and the moving end wiring end 5 on the pole shell 2 are connected with an electromagnetic repulsion mechanism for opening and closing operations, when the electromagnetic repulsion mechanism performs opening operation, the repulsion disc 6, a connecting rod 11, an insulating pull rod 10 and a moving conductive rod 9 which are connected with the repulsion disc are accelerated to move vertically downwards under the action of electromagnetic repulsion generated by an opening driving coil 12, a closed air chamber 7 of the air buffer device is compressed, and buffer resistance from bottom to top is generated; when the closing operation is carried out, the repulsion plate 6, the connecting rod 11, the insulating pull rod 10 and the movable conducting rod 9 which are connected with the repulsion plate are accelerated vertically and upwards under the action of electromagnetic repulsion generated by the closing driving coil 15, the closed air chamber 7 of the gas buffering device is compressed, and a buffering resistance from top to bottom is generated; the bistable retention structure 16 is used to retain an open/close position when the mechanism is operated to open/close.
The embedded pole with the gas buffering device is applied to the vacuum circuit breaker, three-phase segmentation and disassembly can be realized in the three-phase vacuum circuit breaker, the design scheme can exert the portable advantage, and the embedded pole is simple, flexible and convenient to maintain.
Claims (4)
1. The utility model provides a possess gas buffer's solid utmost point post that seals which characterized in that: the terminal comprises a pole shell (2), a vacuum arc-extinguishing chamber (3) arranged in the pole shell (2), a static terminal wiring end (1) fixed on the pole shell (2) and a dynamic terminal wiring end (5), wherein the static terminal wiring end (1) is connected with the static end of the vacuum arc-extinguishing chamber (3) through an electric connecting conductor (4), and the dynamic terminal wiring end (5) is connected with a dynamic conducting rod (9) of the vacuum arc-extinguishing chamber (3) through the electric connecting conductor (4); the gas buffer device is formed by a repulsion disc (6), a closed gas chamber (7), a side wall (8), a connecting rod (11), a brake-separating driving coil (12), a sliding sealing device (13), a gas outlet hole (14) and a brake-closing driving coil (15), the connecting rod (11) is connected with a movable conducting rod (9) of a vacuum arc-extinguishing chamber (3) through an insulating pull rod (10), the repulsion disc (6) is arranged on the connecting rod (11), the brake-separating driving coil (12) is fixed above the repulsion disc (6) through the supporting effect of the gas buffer side wall (8), the brake-closing driving coil (15) is fixed below the repulsion disc (6) through the supporting effect of the gas buffer side wall (8), the sliding sealing device (13) is arranged between the outer peripheral ring of the connecting rod (11) and the inner wall of the brake-separating driving coil (12) and between the inner walls of the brake-closing driving coil (15), and, The opening driving coil (12), the closing driving coil (15) and the gas buffering side wall (8) enclose a closed gas chamber (7), and the lower end of the gas buffering device is connected with a bistable retaining structure (16); the vacuum arc-extinguishing chamber (3), the electric connection conductor (4), the bistable retaining structure (16) and the gas buffering device are poured through epoxy resin (17) and are jointly fixed in the pole inner shell to form the solid-sealed pole with the gas buffering structure.
2. The embedded pole with the gas buffer device according to claim 1, wherein: a gas buffer device is added, an electromagnetic repulsion mechanism is connected with a static end wiring end (1) and a moving end wiring end (5) on a pole shell (2) for opening and closing operations, when the electromagnetic repulsion mechanism is opened, the repulsion plate (6), a connecting rod (11), an insulating pull rod (10) and a moving conductive rod (9) which are connected with the repulsion plate (6) do vertical downward accelerated motion under the action of electromagnetic repulsion generated by an opening driving coil (12), a closed gas chamber (7) of the gas buffer device is compressed, and buffer resistance from bottom to top is generated; when closing operation is carried out, the repulsion plate (6), the connecting rod (11), the insulating pull rod (10) and the movable conducting rod (9) which are connected with the repulsion plate are accelerated vertically and upwards under the action of electromagnetic repulsion generated by the closing driving coil (15), the closed air chamber (7) of the gas buffering device is compressed, and a buffering resistance from top to bottom is generated; the bistable holding structure (16) is used for holding the opening and closing positions when the opening and closing operations are performed.
3. The embedded pole with the gas buffer device according to claim 1, wherein: the bistable retention structure (16) is a disc spring having bistable properties.
4. The use of the embedded pole with a gas buffer device according to claim 1, wherein: the three-phase vacuum circuit breaker is applied to a vacuum circuit breaker, and each phase of the three-phase vacuum circuit breaker can be divided, installed and detached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910283126.7A CN110071010B (en) | 2019-04-10 | 2019-04-10 | Solid-sealed polar pole with gas buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910283126.7A CN110071010B (en) | 2019-04-10 | 2019-04-10 | Solid-sealed polar pole with gas buffering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110071010A CN110071010A (en) | 2019-07-30 |
| CN110071010B true CN110071010B (en) | 2020-11-17 |
Family
ID=67367406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910283126.7A Active CN110071010B (en) | 2019-04-10 | 2019-04-10 | Solid-sealed polar pole with gas buffering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110071010B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799127B (en) * | 2019-04-09 | 2023-06-27 | 南京南瑞继保电气有限公司 | Direct-acting switch assembly and closed direct-acting switch device |
| CN113764225B (en) * | 2021-08-24 | 2022-08-05 | 西安交通大学 | Vacuum switch device with electromagnetic repulsion disc arranged inside vacuum arc extinguish chamber |
| CN114267559B (en) * | 2021-12-22 | 2023-05-02 | 西安交通大学 | A quick switch formula fault current limiting device for superhigh pressure system |
| CN117081019B (en) * | 2023-10-10 | 2024-03-12 | 西安合容开关有限公司 | Quick current limiting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105122412A (en) * | 2014-02-03 | 2015-12-02 | 英国通用电气公司 | Vacuum switching devices |
| CN107316759A (en) * | 2017-07-19 | 2017-11-03 | 西安交通大学 | A kind of gas cushioning features for electromagnetic repulsion force operating mechanism |
-
2019
- 2019-04-10 CN CN201910283126.7A patent/CN110071010B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105122412A (en) * | 2014-02-03 | 2015-12-02 | 英国通用电气公司 | Vacuum switching devices |
| CN107316759A (en) * | 2017-07-19 | 2017-11-03 | 西安交通大学 | A kind of gas cushioning features for electromagnetic repulsion force operating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110071010A (en) | 2019-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110071010B (en) | Solid-sealed polar pole with gas buffering device | |
| CN102881493B (en) | Electromagnetic vortex repulsion quick arc extinguishing switch | |
| CN106783373A (en) | A kind of vacuum interrupter with dynamic main contac and moving arcing contact | |
| CN102280304A (en) | Moving contact assembly and intelligent electromagnetic isolation driving switch applying same | |
| CN106128852A (en) | A kind of arc-chutes and use the chopper of these arc-chutes | |
| CN109036941B (en) | Keep apart fracture structure | |
| CN110896012A (en) | Double-break vacuum circuit breaker | |
| CN103646820A (en) | High-voltage directly-operated air-compressing type SF6 load switch device | |
| CN102760607A (en) | Pressure-operated load switch for gas-insulated ring main unit | |
| CN113675048A (en) | Permanent magnet and spring bidirectional retaining mechanism | |
| CN100350534C (en) | Four pole multi speed disjunction contact of extra-high-voltage breaker | |
| CN2906887Y (en) | Multi-stage arc extinguishing breaking device for extra high voltage breaker | |
| CN111640613A (en) | Double-coil repulsion force operating mechanism | |
| CN202172041U (en) | High voltage permanent magnet vacuum circuit breaker on outdoor post | |
| CN110752102A (en) | Bidirectional permanent magnet retaining mechanism | |
| CN201060787Y (en) | Outdoors vacuum breaker | |
| CN202094043U (en) | Moving contact assembly and electromagnetic isolation driving intelligent switch using same | |
| CN113611550B (en) | Quick mechanical switch for bearing large current | |
| CN100442411C (en) | Multi-stage arc suppressing breaking device for extra-high voltage circuit breaker | |
| CN200953325Y (en) | Bidirectional energy-storing high-speed breaking contact used for ultrahigh voltage circuit breaker | |
| CN209844393U (en) | Environment-friendly gas-insulated totally-enclosed breaker cabinet | |
| CN202454484U (en) | Low-bouncing solid-sealed polar pole | |
| CN110676112B (en) | Solid-sealed pole and circuit breaker | |
| CN100414655C (en) | Bidirectional energy-storage high-speed disjunction contact for extra-high voltage breaker | |
| CN101533735A (en) | High pressure vacuum circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |