CN109935480B - Contact arc extinguishing device of circuit breaker - Google Patents
Contact arc extinguishing device of circuit breaker Download PDFInfo
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- CN109935480B CN109935480B CN201910352355.XA CN201910352355A CN109935480B CN 109935480 B CN109935480 B CN 109935480B CN 201910352355 A CN201910352355 A CN 201910352355A CN 109935480 B CN109935480 B CN 109935480B
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Abstract
The invention discloses a contact arc-extinguishing device of a circuit breaker, which structurally comprises a synchronous transmission device, an arc-extinguishing chamber, a static contact device, a movable contact device and a magnetic blow coil, wherein the static contact device and the movable contact device are respectively arranged at the left side and the right side inside the arc-extinguishing chamber, the synchronous transmission device is arranged below the arc-extinguishing chamber, the static contact device and the movable contact device are in transmission connection through the synchronous transmission device, the magnetic blow coil is connected with the static contact device, guide covers are respectively arranged at the two sides inside the arc-extinguishing chamber, arc-extinguishing covers which are uniformly distributed are arranged in the middle of the guide covers, and the arc-extinguishing covers are arranged at the outer side of the arc-extinguishing chamber and are communicated with the inside of the arc-extinguishing chamber. And the contact of the electric arc and the arc extinguishing chamber is instantaneous, so that the arc extinguishing chamber is prevented from being damaged by continuous contact.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to a contact arc-extinguishing device of a circuit breaker.
Background
The circuit breaker is also called an air switch, when the circuit is broken, electric arcs are easily generated between contacts, the circuit breaker has great damage effect on the contacts, and the time for breaking the circuit is prolonged, so that the circuit breaker needs to be extinguished through an arc extinguishing device.
When the existing arc extinguishing device is used, the arc is generally extinguished by cooling the arc through the contact of the solid medium and the arc, in the contact of the arc and the solid medium, the earliest contacted medium is heated along with the extension of the contact time, the cooling effect is reduced, and when the contact time is long or the contact is frequent, the solid medium is easy to damage quickly.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide a contact arc-extinguishing device of a circuit breaker.
The invention is realized by adopting the following technical scheme: the utility model provides a contact arc control device of circuit breaker, its structure includes synchronous drive device, explosion chamber, static contact device, moving contact device, magnetic blow coil, static contact device, moving contact device are installed respectively to the inside left and right sides of explosion chamber, synchronous drive device establishes in the explosion chamber below, pass through synchronous drive device transmission connection between static contact device and the moving contact device, the magnetic blow coil is connected with static contact device.
As optimization, both sides that are equipped with inside the explosion chamber are equipped with the guide housing respectively, be equipped with evenly distributed's arc extinguishing chamber in the middle of the guide housing, the arc extinguishing chamber is established in the explosion chamber outside and with the inside intercommunication of explosion chamber.
Preferably, the static contact device comprises a static contact, a bracket, a bearing and a driven gear, the bracket penetrates through the left end of the arc extinguish chamber and is mounted at the left end of the arc extinguish chamber through the bearing, the static contact is arranged at one end of the bracket arranged inside the arc extinguish chamber, one end of the bracket arranged outside the arc extinguish chamber is connected with the driven gear, and the static contact is connected with the magnetic blow coil.
As optimization, the moving contact device comprises a moving contact, a lead screw, a fixing nut, a driving gear, a rotary joint and a pull rod, the fixing nut is installed at the right end of the arc extinguish chamber, the lead screw penetrates through the fixing nut and is matched with the fixing nut, the moving contact is arranged at one end of the lead screw inside the arc extinguish chamber, the moving contact and the fixed contact are parallel to each other, one end of the lead screw, which is arranged outside the arc extinguish chamber, is connected with the driving gear, and the driving gear is movably connected with the pull rod through the.
As optimization, synchronous transmission comprises intermediate gear, first gear, universal driving shaft, second gear, gear post, both ends are connected with first gear, second gear respectively about the universal driving shaft, first gear is established under the driven gear and is connected with the driven gear transmission through intermediate gear, the second gear passes through gear post and meshes with the driving gear mutually.
Preferably, the moving contact and the static contact are respectively connected with the bracket and the screw rod through oblique rods with the same angle.
Preferably, the length of the gear column is equal to the moving distance between the gear column and the movable contact.
Preferably, the arc extinguishing chamber is concave.
As optimization, the first gear and the second gear are consistent in size, the diameters of the intermediate gear and the gear column are consistent, and the driving gear and the driven gear are consistent in size.
Advantageous effects
When the contact is separated in use, the moving contact is quickly pulled by the pull rod to move, due to the matching between the lead screw and the fixed nut, the lead screw can rotate when the lead screw quickly moves horizontally, the lead screw rotates while moving horizontally, and the length of the gear column is long enough, so that the lead screw can be always meshed with a driving gear connected with the lead screw, the power of the lead screw can be conveniently transmitted to the second gear, the second gear drives the first gear to rotate synchronously through the linkage shaft, the first gear transmits the power to the driven gear, the fixed contact and the moving contact can synchronously rotate, and the arc can be blown to the arc extinguishing covers under the action of the magnetic blowing coil, so that the arc is continuously rotated to be contacted with different arc extinguishing covers for cooling while the arc is pulled open, the outer sides of the arc extinguishing covers are contacted with air, and the rapid cooling can be automatically performed.
Compared with the prior art, the invention has the beneficial effects that: draw electric arc and rotatory electric arc through the limit and make electric arc constantly with the arc-extinguishing chamber contact cooling of difference, because the arc-extinguishing chamber exposes in the air, can cool off the contact of being convenient for next time fast after contacting with electric arc, improve cooling efficiency and extinguish speed, and electric arc is instantaneous with the contact of arc-extinguishing chamber, avoids lasting contact to damage the arc-extinguishing chamber, improves life.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a cross-sectional view of a contact arc extinguishing apparatus of a circuit breaker according to the present invention.
Fig. 2 is a schematic structural diagram of a contact arc extinguishing device of a circuit breaker in a first working state according to the present invention.
Fig. 3 is a schematic structural diagram of a contact arc extinguishing device of a circuit breaker in a second working state.
Figure 4 is a side view of an arc chute of the present invention.
In the figure: the device comprises a synchronous transmission device 1, an arc extinguish chamber 2, a static contact device 3, a movable contact device 4, a magnetic blow coil 5, a guide shield 20, an arc extinguish chamber 21, a static contact 30, a support 31, a bearing 32, a driven gear 33, a movable contact 40, a lead screw 41, a fixing nut 42, a driving gear 43, a rotary joint 44, a pull rod 45, an intermediate gear 10, a first gear 11, a linkage shaft 12, a second gear 13 and a gear column 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Referring to fig. 1 to 4, the present invention provides a technical solution of a contact arc extinguishing device of a circuit breaker: the structure of the arc extinguishing chamber comprises a synchronous transmission device 1, an arc extinguishing chamber 2, a static contact device 3, a moving contact device 4 and a magnetic blow-out coil 5, wherein the static contact device 3 and the moving contact device 4 are respectively installed on the left side and the right side inside the arc extinguishing chamber 2, the synchronous transmission device 1 is arranged below the arc extinguishing chamber 2, the static contact device 3 is in transmission connection with the moving contact device 4 through the synchronous transmission device 1, the magnetic blow-out coil 5 is connected with the static contact device 3, and the magnetic blow-out coil 5 can blow electric arcs in one direction to enable the electric arcs to be in contact with a solid medium for cooling.
The inside both sides that are equipped with of explosion chamber 2 are equipped with guide housing 20 respectively, be equipped with evenly distributed's arc extinguishing chamber 21 in the middle of the guide housing 20, arc extinguishing chamber 21 establishes in the explosion chamber 2 the outside and with 2 inside intercommunications of explosion chamber, arc extinguishing chamber 21 establishes can fully contact with outside air outside explosion chamber 2, improves the radiating effect.
The static contact device 3 is composed of a static contact 30, a support 31, a bearing 32 and a driven gear 33, the support 31 penetrates through the left end of the arc extinguish chamber 2 and is installed at the left end of the arc extinguish chamber 2 through the bearing 32, the static contact 30 is arranged at one end of the support 31 arranged inside the arc extinguish chamber 2, one end of the support 31 arranged outside the arc extinguish chamber 2 is connected with the driven gear 33, the static contact 30 is connected with the magnetic blow coil 5, and the bearing 32 facilitates the static contact 30 to rotate.
The moving contact device 4 is composed of a moving contact 40, a lead screw 41, a fixing nut 42, a driving gear 43, a rotary joint 44 and a pull rod 45, the fixing nut 42 is installed at the right end of the arc extinguish chamber 2, the lead screw 41 penetrates through the fixing nut 42 and is matched with the fixing nut 42, the moving contact 40 is arranged at one end of the lead screw 41 arranged inside the arc extinguish chamber 2, the moving contact 40 and the static contact 30 are parallel to each other, one end of the lead screw 41 arranged outside the arc extinguish chamber 2 is connected with the driving gear 43, the driving gear 43 is movably connected with the pull rod 45 through the rotary joint 44, the lead screw 41 can rotate while moving horizontally by matching with the fixing nut 42, and the rotary joint 44 is convenient for the pull rod 45 to.
The moving contact 40 and the static contact 30 are respectively connected with the bracket 31 and the lead screw 41 through the slashes with the same angle, so that the arc is closer to the arc extinguishing chamber 21, and the cooling is faster.
The length of the gear column 14 is equal to the moving distance of the movable contact 40, so that the gear column and the movable contact are always meshed.
The arc extinguishing cover 21 is concave, so that the contact area of an electric arc and a solid medium can be increased, and the cooling effect is improved.
The sizes of the first gear 11 and the second gear 13 are the same, the diameters of the intermediate gear 10 and the gear column 14 are the same, and the sizes of the driving gear 43 and the driven gear 33 are the same, so that the movable contact 40 and the static contact 30 can synchronously run conveniently.
When the contact is separated in use, the movable contact 40 can be quickly pulled to move by the pull rod 45, due to the matching between the lead screw 41 and the fixed nut 42, the lead screw 41 can rotate when the lead screw 41 moves quickly and horizontally, the lead screw 41 rotates while moving horizontally, and the length of the gear column 14 is long enough, so that the lead screw 41 can be always meshed with the driving gear 43 connected with the lead screw 41, the power of the lead screw 41 can be conveniently transmitted to the second gear 13, the second gear 13 drives the first gear 11 to rotate synchronously through the linkage shaft 12, the first gear 11 transmits the power to the driven gear 33, so that the fixed contact 30 and the movable contact 40 can synchronously rotate, the arc can be blown to the arc extinguishing chamber 21 through the action of the magnetic blowing coil 5, and the arc can be continuously rotated to be contacted with different arc extinguishing chambers 21 for cooling while the arc is pulled away, and the outer side of the arc extinguishing chamber 21 is contacted with air, can carry out rapid cooling automatically.
Compared with the prior art, the invention has the technical progress that: draw electric arc and rotatory electric arc through the limit and make electric arc constantly with the arc-extinguishing chamber contact cooling of difference, because the arc-extinguishing chamber exposes in the air, can cool off the contact of being convenient for next time fast after contacting with electric arc, improve cooling efficiency and extinguish speed, and electric arc is instantaneous with the contact of arc-extinguishing chamber, avoids lasting contact to damage the arc-extinguishing chamber, improves life.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (1)
1. The utility model provides a contact arc control device of circuit breaker, its structure includes synchronous transmission device (1), explosion chamber (2), static contact device (3), moving contact device (4), magnetism blow coil (5), its characterized in that: the arc extinguish chamber is characterized in that the left side and the right side of the interior of the arc extinguish chamber (2) are respectively provided with a static contact device (3) and a movable contact device (4), the synchronous transmission device (1) is arranged below the arc extinguish chamber (2), the static contact device (3) and the movable contact device (4) are in transmission connection through the synchronous transmission device (1), and the magnetic blow coil (5) is connected with the static contact device (3); the arc extinguishing chamber (2) is internally provided with guide covers (20) at two sides respectively, the middle of each guide cover (20) is provided with arc extinguishing covers (21) which are uniformly distributed, and each arc extinguishing cover (21) is arranged on the outer side of the arc extinguishing chamber (2) and communicated with the inside of the arc extinguishing chamber (2); the static contact device (3) is composed of a static contact (30), a support (31), a bearing (32) and a driven gear (33), the support (31) penetrates through the left end of the arc extinguish chamber (2) and is installed at the left end of the arc extinguish chamber (2) through the bearing (32), the static contact (30) is arranged at one end, arranged inside the arc extinguish chamber (2), of the support (31), one end, arranged outside the arc extinguish chamber (2), of the support (31) is connected with the driven gear (33), and the static contact (30) is connected with the magnetic blow coil (5); the moving contact device (4) is composed of a moving contact (40), a lead screw (41), a fixing nut (42), a driving gear (43), a rotary joint (44) and a pull rod (45), the fixing nut (42) is installed at the right end of the arc extinguish chamber (2), the lead screw (41) penetrates through the fixing nut (42) and is matched with the fixing nut (42), the moving contact (40) is arranged at one end of the lead screw (41) arranged inside the arc extinguish chamber (2), the moving contact (40) is parallel to the fixed contact (30), one end of the lead screw (41) arranged outside the arc extinguish chamber (2) is connected with the driving gear (43), and the driving gear (43) is movably connected with the pull rod (45) through the rotary joint (44); the synchronous transmission device (1) consists of an intermediate gear (10), a first gear (11), a linkage shaft (12), a second gear (13) and a gear column (14), wherein the left end and the right end of the linkage shaft (12) are respectively connected with the first gear (11) and the second gear (13), the first gear (11) is arranged under a driven gear (33) and is in transmission connection with the driven gear (33) through the intermediate gear (10), and the second gear (13) is meshed with a driving gear (43) through the gear column (14); the moving contact (40) and the static contact (30) are respectively connected with the bracket (31) and the lead screw (41) through oblique levers with the same angle;
when the contacts are separated, the movable contact (40) can be quickly pulled to move by the pull rod (45), due to the matching between the lead screw (41) and the fixed nut (42), the lead screw (41) can rotate when the lead screw (41) moves quickly and horizontally, the lead screw (41) rotates while moving horizontally, due to the fact that the length of the gear column (14) is long enough, the lead screw can be always meshed with the driving gear (43) connected with the lead screw (41), the power of the lead screw (41) is conveniently transmitted to the second gear (13), the second gear (13) drives the first gear (11) to rotate synchronously through the linkage shaft (12), the first gear (11) transmits the power to the driven gear (33), so that the fixed contact (30) and the movable contact (40) can rotate synchronously, through the action of the magnetic blowing coil (5), electric arcs can be blown to the arc extinguishing cover (21), and the electric arcs continuously rotate to be contacted with different arc extinguishing covers (21) for cooling, and the outer side of the arc extinguishing cover (21) is contacted with air, so that the temperature can be automatically and rapidly reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910352355.XA CN109935480B (en) | 2019-04-29 | 2019-04-29 | Contact arc extinguishing device of circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910352355.XA CN109935480B (en) | 2019-04-29 | 2019-04-29 | Contact arc extinguishing device of circuit breaker |
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| Publication Number | Publication Date |
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| CN109935480A CN109935480A (en) | 2019-06-25 |
| CN109935480B true CN109935480B (en) | 2021-05-07 |
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| CN201910352355.XA Active CN109935480B (en) | 2019-04-29 | 2019-04-29 | Contact arc extinguishing device of circuit breaker |
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| CN111403229B (en) * | 2020-06-04 | 2020-08-28 | 广东电网有限责任公司东莞供电局 | Contact mechanism of vacuum circuit breaker |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2596578B1 (en) * | 1986-03-28 | 1994-05-06 | Merlin Et Gerin | ELECTRIC CIRCUIT BREAKER WITH SELF-EXPANSION AND ROTATING ARC |
| FR2921198B1 (en) * | 2007-09-17 | 2010-03-12 | Areva T & D Sa | ACTUATION BY A MAIN SHAFT ASSEMBLY AND SECONDARY TREES OF A CIRCUIT BREAKER BREAKER |
| CN203966963U (en) * | 2014-08-02 | 2014-11-26 | 浙江沈高所电气有限公司 | A kind of quick acting switching-off structure of vacuum circuit-breaker |
| CN203966962U (en) * | 2014-08-02 | 2014-11-26 | 浙江沈高所电气有限公司 | A kind of laborsaving minute brake structure of vacuum circuit-breaker |
| CN105551881B (en) * | 2016-01-11 | 2018-07-24 | 许继集团有限公司 | Vacuum interrupter, vacuum arc-extinguishing chamber contact and direct current vacuum circuit breaker |
| CN106356241B (en) * | 2016-11-15 | 2018-06-26 | 通用森源（深圳）电气有限公司 | A kind of high stability high-pressure vacuum breaker |
| CN206331966U (en) * | 2016-12-20 | 2017-07-14 | 通用森源（深圳）电气有限公司 | A kind of high stability high-pressure vacuum breaker for being easy to radiating |
| CN207038428U (en) * | 2017-06-16 | 2018-02-23 | 沈阳工业大学 | It is a kind of to rotate the electrode structure cut-off |
| CN206849755U (en) * | 2017-06-19 | 2018-01-05 | 国网江苏省电力公司盐城供电公司 | The primary cut-out of synchronization double-action contact |
| CN107342186B (en) * | 2017-07-20 | 2021-04-16 | 中国电力科学研究院 | Adjustable rotating magnetic field vacuum arc-extinguishing chamber |
| CN207319995U (en) * | 2017-11-10 | 2018-05-04 | 保定元辰变压器制造有限公司 | A kind of outdoor vacuum circuit breaker with protective device |
| CN208722807U (en) * | 2018-09-30 | 2019-04-09 | 吕晓君 | A kind of follow-on vacuum switch |
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Effective date of registration: 20210409 Address after: 325000 room 605, building 2, Deliyuan residential district, Niushan North Road, Nanjiao street, Lucheng District, Wenzhou City, Zhejiang Province Applicant after: Zhan Jianying Address before: 362100 No.2 Dongcuo, diagonally opposite Dali beverage factory, Zishan Town, Hui'an County, Quanzhou City, Fujian Province Applicant before: HUI'AN NAIYA ENERGY SAVING TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20221214 Address after: 710000 Unit 2, Building 1, No. 299, Second Industrial Road, Xi'an National Civil Aerospace Industry Base, Shaanxi Province Patentee after: SHUBANG ELECTRIC POWER TECHNOLOGY Co.,Ltd. Address before: 325000 room 605, building 2, Deliyuan residential district, Niushan North Road, Nanjiao street, Lucheng District, Wenzhou City, Zhejiang Province Patentee before: Zhan Jianying |
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