CN103050331A - Microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability - Google Patents
Microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability Download PDFInfo
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- CN103050331A CN103050331A CN2013100016927A CN201310001692A CN103050331A CN 103050331 A CN103050331 A CN 103050331A CN 2013100016927 A CN2013100016927 A CN 2013100016927A CN 201310001692 A CN201310001692 A CN 201310001692A CN 103050331 A CN103050331 A CN 103050331A
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- arc extinguishing
- container
- extinguishing chamber
- short circuit
- vacuum arc
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Abstract
The invention discloses a microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability. The microminiature vacuum arc extinguishing chamber comprises a cylindrical container, wherein the container is characterized in that the container wall is a ceramic case, a static contact and a movable contact are respectively arranged at two ends of the container and are respectively connected with movable and static outlet ends through end sealing rings, bulges are arranged at the inner wall of the ceramic case, the longitudinal section of the bulges are in an H shape, and a corrugated pipe is arranged between the outer part of the sealing container and the movable contact. The microminiature vacuum arc extinguishing chamber has the advantages that the structure is simple, and the bulges with the H-shaped longitudinal section are arranged at the inner wall of the vacuum arc extinguishing chamber, so the creepage length of the small-length size is maximized, the requirement can be reached through the small-size voltage resistance value, in addition, the corrugated pipe is externally arranged at the outer side of the vacuum arc extinguishing chamber, the creepage distance is increased, and in addition, the size of the arc extinguishing chamber can be smaller.
Description
Technical field
The present invention relates to earthed switch field in the high voltage power transmission and transforming net, relate in particular to a kind of microminiature vacuum interrupter with short circuit current making capability.
Background technology
Power circuit distribution section is provided with high voltage ground switch usually, does the usefulness of ground protection.Ground protection is even more important to maintenance, inspection operation personnel's personal safety.
Be subjected to subordinate's load effect, earthed switch closes when closing, and has sometimes larger making current.Maximum can reach 50kA under the 12kV electric pressure; In this case, the general prebreakdown current of air fracture when contact closing can produce very strong high-temperature electric arc, and easy cause damage of equipment also involves personal safety.This earthed switch pass is closed large electric current and is had the characteristic that frequency is few, electric current is decayed in time.
Now to the inhibition of high-voltage arc usually by between contact with vacuum or fill with high insulating property gas and realize.Wherein vacuum mode is with its fracture distance little (9-12mm), pollution-free gas discharging (such as SF6), be widely adopted without the advantage such as combustion explosion danger.But existing vacuum interrupter volume with regard to short circuit current pass and ability is larger, mostly be used in the high-tension electricity distribution end, and more and more appearing at the public life place such as residential quarter along with small-sized looped network distribution high-voltage board etc., the excessive vacuum interrupter of the sort of volume uses limitation increasing.
Summary of the invention
The purpose of this invention is to provide that a kind of volume is little, withstand voltage is high, have the microminiature vacuum interrupter of short circuit current making capability.
The present invention adopts following technical proposals:
A kind of microminiature vacuum interrupter with short circuit current making capability, comprise hydrostatic column, described container two ends are respectively arranged with fixed contact, moving contact and described fixed contact, moving contact and are connected and sealed by end seal ring and container respectively, described container internal perisporium is provided with the projection that the side section is the H type, is provided with bellows between described sealed container outside and the moving contact.
The chamber wall of described container is the porcelain shell.
The length of described container is 60-80MM.
The diameter of described container is 50-60MM.
The present invention is simple in structure, by the inwall at vacuum interrupter the projection that the vertical section is the H type is set, thereby make the creepage length maximization of the volume of smaller length, thereby make the withstand voltage of small size also can reach demand, and by making bellows external in the outside of vacuum interrupter, can in the situation that does not reduce creepage distance, make the volume of arc control device can be less.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of microminiature vacuum interrupter with short circuit current making capability, it comprises hydrostatic column, and described container two ends are respectively arranged with fixed contact 1, moving contact 6 and described fixed contact 1, moving contact 6 is connected and sealed with porcelain shell 3 respectively by end seal ring 2.Described chamber wall is porcelain shell 3, and fixed contact 1 is fixed with the 3 one end face solderings of porcelain shell by end seal ring 2, and soldering guarantees air-tightness; The inwall of described porcelain shell 3 is provided with projection, the vertical section of described projection is the H type, described H type projection is creeping discharge can not occur when guaranteeing industrial frequency withstand voltage puncture the creepage distance that has namely increased porcelain shell 3, can reach the effect of carrying electrion, so also just provide condition for volume-diminished of the present invention.
Be provided with bellows 5 between described sealed container outside and the moving contact 6.Described moving contact 6 is connected with the 3 other end solderings of porcelain shell by bellows 5, end seal ring 2, guarantees equally air-tightness.After soldering becomes sealed tube, vacuumize in the pipe.Described bellows 5 is in porcelain shell 3 outsides, and at moving contact 6 during along the axis reciprocating motion, bellows 5 can elastic elongation or shortening and do not affect vacuum character in the vacuum tube.Because bellows 5 is arranged on the outside of vacuum interrupter, reduce the length of porcelain shell container, because the long porcelain shell of traditional built-in needs holds.
The length of described container is 60-80MM.The diameter of described container is 50-60MM.The minimum model scope that more than can do for vacuum interrupter of the present invention, during vacuum interrupter work of the present invention, when moving contact 6 and fixed contact 1 keep at a certain distance away, be vacuum interrupter disjunction state, the galvanic circle cuts off and can carry the above power-frequency voltage of 28kV; After moving contact 6 approached with certain speed and touches fixed contact 1, for vacuum interrupter closes the state that closes, the galvanic circle was connected and can be carried the in short-term above electric current of 50kA; In the process of moving contact 6 near fixed contact 1, vacuum environment can effectively suppress electric arc generation and expansion.
The present invention can be applied to less installing space only to be provided and to require to have on the power equipment of larger short circuit current making capability.
Claims (4)
1. microminiature vacuum interrupter with short circuit current making capability, comprise hydrostatic column, described container two ends are respectively arranged with fixed contact, moving contact and described fixed contact, moving contact and are connected and sealed by end seal ring and container respectively, it is characterized in that: described container internal perisporium is provided with the projection that the side section is the H type, is provided with bellows between described sealed container outside and the moving contact.
2. the microminiature vacuum interrupter with short circuit current making capability according to claim 1, it is characterized in that: the chamber wall of described container is the porcelain shell.
3. arbitrary described microminiature vacuum interrupter with short circuit current making capability according to claim 1-2, it is characterized in that: the length of described container is 60-80MM.
4. the microminiature vacuum interrupter with short circuit current making capability according to claim 3, it is characterized in that: the diameter of described container is 50-60MM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100016927A CN103050331A (en) | 2013-01-05 | 2013-01-05 | Microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100016927A CN103050331A (en) | 2013-01-05 | 2013-01-05 | Microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103050331A true CN103050331A (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100016927A Pending CN103050331A (en) | 2013-01-05 | 2013-01-05 | Microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability |
Country Status (1)
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| CN (1) | CN103050331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590778A (en) * | 2015-12-18 | 2016-05-18 | 北京双杰电气股份有限公司 | Isolating switch |
| CN107293442A (en) * | 2016-03-30 | 2017-10-24 | 北京京东方真空电器有限责任公司 | A kind of insulation crust and its manufacture method for possessing integrated function |
Citations (8)
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|---|---|---|---|---|
| CN2285510Y (en) * | 1997-01-27 | 1998-07-01 | 赵学文 | High-tension vacuum arc-extinguishing chamber |
| CN101331573A (en) * | 2005-12-16 | 2008-12-24 | 托马斯及贝茨国际股份有限公司 | Method and apparatus for the detection of high pressure conditions in a vacuum-type electrical device |
| CN101789328A (en) * | 2010-03-25 | 2010-07-28 | 北京双杰电气股份有限公司 | Three-station vacuum arc extinguish chamber for all-solid switch cabinet |
| CN102148109A (en) * | 2010-02-05 | 2011-08-10 | 昆山国力真空电器有限公司 | Vacuum switch tube for low-voltage circuit breaker |
| JP2012064416A (en) * | 2010-09-15 | 2012-03-29 | Toshiba Corp | Vacuum valve |
| CN202307674U (en) * | 2011-10-20 | 2012-07-04 | 北京华东森源电气有限责任公司 | Vacuum arc extinguish chamber and vacuum breaker using same |
| JP2012230876A (en) * | 2011-04-27 | 2012-11-22 | Toshiba Corp | Vacuum valve, and manufacturing method thereof |
| CN203013620U (en) * | 2013-01-05 | 2013-06-19 | 许昌永新电气股份有限公司 | Microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability |
-
2013
- 2013-01-05 CN CN2013100016927A patent/CN103050331A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2285510Y (en) * | 1997-01-27 | 1998-07-01 | 赵学文 | High-tension vacuum arc-extinguishing chamber |
| CN101331573A (en) * | 2005-12-16 | 2008-12-24 | 托马斯及贝茨国际股份有限公司 | Method and apparatus for the detection of high pressure conditions in a vacuum-type electrical device |
| CN102148109A (en) * | 2010-02-05 | 2011-08-10 | 昆山国力真空电器有限公司 | Vacuum switch tube for low-voltage circuit breaker |
| CN101789328A (en) * | 2010-03-25 | 2010-07-28 | 北京双杰电气股份有限公司 | Three-station vacuum arc extinguish chamber for all-solid switch cabinet |
| JP2012064416A (en) * | 2010-09-15 | 2012-03-29 | Toshiba Corp | Vacuum valve |
| JP2012230876A (en) * | 2011-04-27 | 2012-11-22 | Toshiba Corp | Vacuum valve, and manufacturing method thereof |
| CN202307674U (en) * | 2011-10-20 | 2012-07-04 | 北京华东森源电气有限责任公司 | Vacuum arc extinguish chamber and vacuum breaker using same |
| CN203013620U (en) * | 2013-01-05 | 2013-06-19 | 许昌永新电气股份有限公司 | Microminiature vacuum arc extinguishing chamber with short circuit current switching-off capability |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590778A (en) * | 2015-12-18 | 2016-05-18 | 北京双杰电气股份有限公司 | Isolating switch |
| CN105590778B (en) * | 2015-12-18 | 2019-02-22 | 北京双杰电气股份有限公司 | Disconnecting switch |
| CN107293442A (en) * | 2016-03-30 | 2017-10-24 | 北京京东方真空电器有限责任公司 | A kind of insulation crust and its manufacture method for possessing integrated function |
| CN107293442B (en) * | 2016-03-30 | 2019-05-24 | 北京京东方真空电器有限责任公司 | A kind of insulation crust having integrated function and its manufacturing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENGDU KAISAIER ELECTRONICS CO., LTD. Effective date: 20130729 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130729 Address after: Ruixiang economic and Technological Development Zone Xuchang road 461000 in Henan Province Applicant after: Xuchang Yongxin Electric Co., Ltd. Applicant after: Chengdu Kaisaier Electronics Co.,Ltd. Address before: Ruixiang economic and Technological Development Zone Xuchang road 461000 in Henan Province Applicant before: Xuchang Yongxin Electric Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130417 |