CN203910656U - Vacuum arc-extinguishing chamber - Google Patents
Vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN203910656U CN203910656U CN201420021414.8U CN201420021414U CN203910656U CN 203910656 U CN203910656 U CN 203910656U CN 201420021414 U CN201420021414 U CN 201420021414U CN 203910656 U CN203910656 U CN 203910656U
- Authority
- CN
- China
- Prior art keywords
- conductive rod
- shielding cylinder
- contact
- insulation crust
- static
- 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.)
- Expired - Fee Related
Links
- 230000003068 static effect Effects 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 24
- 239000012809 cooling fluid Substances 0.000 claims description 6
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to the field of high-voltage switches, and specifically relates to a vacuum arc-extinguishing chamber. The technical scheme of the utility model is that the vacuum arc-extinguishing chamber comprises an insulating housing, a static end cover plate, a movable end cover plate, a static conductive rod, and a movable conductive rod; a gap is disposed between the movable conductive rod and the static conductive rod; an inner end of the static conductive rod is provided with a static contact; an inner end of the movable conductive rod is provided with a movable contact which has the same area as the static contact; the exterior of the movable conductive rod is sleeved by a corrugated pipe; the interior of the insulating housing is provided with a shielding cylinder which sleeves the movable contact and the static contact; the shielding cylinder is fixed in the insulating housing; the shielding cylinder is a hollow cylinder, and a cooling groove is disposed between the cylindrical outer and inner walls of the shielding cylinder; the interior of the cooling groove is provided with a cooling liquid; the cylindrical inner wall is covered by a metal mesh; and the shielding cylinder is made of copper materials. The objective of the utility model lies in providing the vacuum arc-extinguishing chamber which is high in speed of heat dissipation, improves the breaking capability, and prolongs the service life.
Description
Technical field
The utility model relates to a kind of high-voltage switch gear field, is specifically related to a kind of vacuum interrupter.
Background technology
Vacuum interrupter, it is the core component of mesohigh power switch, mainly form vacuum interrupter by parts such as airtight insulation crust, galvanic circle, shielding cylinder, contact, bellowss, vacuum interrupter is to utilize high vacuum operational insulation arc-extinguishing medium, realizes a kind of electron tube of the on-off function of power circuit by sealing a pair of contact in a vacuum.In the time that it disconnects the electric current of certain numerical value, the moment that dynamic/static contact is separating, electric current is retracted in any of just separation of contact, occur that the violent increase of resistance between electrode and temperature improve rapidly, until the evaporation of generating electrodes metal, forms high electric field strength simultaneously, causes extremely strong strong transmitting and gap breakdown, produces vacuum arc; Play and prevented that contact from producing a large amount of metallic vapours and droplets in arcing process at this process shielding cylinder, polluted the inwall of insulation crust, avoided causing the dielectric strength of vacuum arc extinguish chamber housing decline or produce flashover.
Shielding cylinder of the prior art during due to arcing the temperature of shielding cylinder may rise quite highly, and temperature is higher, the ability of surface of solids cohesion electric arc product is poorer, can reduce the connecting-disconnecting function of arc control device, but also can cause shielding cylinder lifetime.
Utility model content
The deficiency existing for prior art, the elongated vacuum interrupter of connecting-disconnecting function, life-span that the purpose of this utility model is to provide a kind of rapid heat dissipation, improves arc control device.
For achieving the above object, the utility model provides following technical scheme: a kind of vacuum interrupter, comprise insulation crust, be fixed on quiet end casing and the moved end cover plate at insulation crust two ends, in insulation crust, be provided with the static conductive rod being fixed on quiet end casing and be slidably connected at the moving conductive rod on the cover plate of moved end, gapped between moving conductive rod and static conductive rod, static conductive rod the inner is provided with fixed contact, moving conductive rod the inner is provided with the moving contact with fixed contact homalographic, moving conductive rod is arranged with bellows outward, in insulation crust, be provided with the shielding cylinder in moving contact and fixed contact are enclosed within, described shielding cylinder is fixed in insulation crust, described shielding cylinder is the cylindrical of hollow, between its cylinder shape inner wall and outer wall, be provided with cooling bath, in described cooling bath, be provided with cooling fluid, described cylinder shape inner wall covers layer of metal net, described shielding cylinder is metallic copper material.
By adopting such scheme: what described shielding cylinder was hollow is cylindrical, is provided with cooling bath between its cylinder shape inner wall and outer wall, is provided with cooling fluid in described cooling bath, can effectively prevent shielding cylinder excess Temperature; So described inwall covers layer of metal net, contact in arcing process, produce when a large amount of metallic vapours and drop are sprayed on shielding cylinder wire netting, adhere to can be more firm, can improve the connecting-disconnecting function of vacuum interrupter, because the thickness that increases within the specific limits main shield cover can improve the connecting-disconnecting function of vacuum interrupter, but after thickness is increased to a certain degree, the connecting-disconnecting function of vacuum interrupter is tending towards saturated, and the surface temperature of radome no longer reduces because thickness increases.
The utility model is further set to, and described moving conductive rod is oxygenless copper material, and described conducting rod one end is provided with fairlead.
By adopting such scheme: described conductive sleeve has ensured that the contact resistance between two contacts reduces and keeps the stable good mechanical strength that has while bearing dynamic current with arc control device.
The utility model is further set to, and described moving contact and fixed contact are the cup-like structure with skewed slot.
By adopting such scheme: can have transverse magnetic field and the characteristic with longitudinal magnetic field, arc extinguishing preferably concurrently with the cup-shaped contact of skewed slot.
The utility model is further set to, and described bellows wall thickness is 0.12～0.14mm, and the material of use is chromium-Ni-Ti stainless steel, and described bellows is provided with ripple radome outward.
By adopting such scheme: bellows is the important parts of vacuum interrupter, adopt stainless steel alloy intensity to increase, reduce the fatigue strength of bellows.
The utility model is further set to, and described insulation crust common used material is glass or high alumina ceramic.
The utility model is further set to, and in described insulation crust, is provided with getter.
By adopting such scheme: described getter can keep high vacuum degree in arc control device.
Brief description of the drawings
Fig. 1 is a kind of vacuum interrupter cutaway view of the utility model;
Fig. 2 is the partial enlarged drawing of a kind of shielding cylinder of the utility model.
Reference numeral: 1, static conductive rod; 2, quiet end casing; 3, insulation crust; 4, fixed contact; 5, moving contact; 6, shielding cylinder; 61, cooling bath; 611, cooling fluid; 62, wire netting; 7, radome; 8, moved end cover plate; 9, bellows; 10, moving conductive rod; 11, fairlead; 12, getter.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
A kind of vacuum interrupter as shown in Fig. 1 Fig. 2, comprise insulation crust 3, be fixed on quiet end casing 2 and the moved end cover plate 8 at insulation crust 3 two ends, in insulation crust 3, be provided with the static conductive rod 1 being fixed on quiet end casing 2 and be slidably connected at the moving conductive rod 10 on moved end cover plate 8, gapped between moving conductive rod 10 and static conductive rod 1, static conductive rod 1 the inner is provided with fixed contact 4, moving conductive rod 10 the inners are provided with the moving contact 5 with fixed contact 4 homalographics, the outer bellows 9 that is arranged with of moving conductive rod 10, in insulation crust 3, be provided with the shielding cylinder 6 in fixed contact 4 and moving contact 5 are enclosed within, described shielding cylinder 6 is fixed in insulation crust 3, what described shielding cylinder 6 was hollow is cylindrical, between its cylinder shape inner wall and outer wall, be provided with cooling bath 61, in described cooling bath 61, be provided with cooling fluid 611, described inwall covers layer of metal net 62, described shielding cylinder 6 is metallic copper material.
Cooling bath 61, is provided with cooling fluid 611 in described cooling bath 61, can effectively prevent shielding cylinder 6 excess Temperatures; So described inwall covers layer of metal net 62, contact in arcing process, produce when a large amount of metallic vapours and drop are sprayed on shielding cylinder 6 wire nettings 62, adhere to can be more firm, can improve the connecting-disconnecting function of vacuum interrupter.
The utility model is further set to, and described moving conductive rod 10 is oxygenless copper material, and described conducting rod one end is provided with fairlead 11; Described conductive sleeve has ensured that the contact resistance between two contacts has good mechanical strength when reducing and keeping stable and arc control device to bear dynamic current.
The utility model is further set to, and described fixed contact 4 and moving contact 5 are the cup-like structure with skewed slot; Can have transverse magnetic field and the characteristic with longitudinal magnetic field concurrently, adding of longitudinal magnetic field can improve the switching current value to shrinkage type electric arc by diffusivity arc transfer; Experiment shows, under enough longitudinal magnetic fields, large current vacuum electric arc still has the essential characteristic of diffusivity vacuum arc, arc spot distributes at electrode contact surface uniform, contact surface can not produce local serious fusing, and it is low to have arc voltage, the excellent characteristic that arc energy is little, this for arc after intensity recover, improve breaking capacity be very useful.
The utility model is further set to, and described bellows wall thickness is 0.12～0.14mm, and the material of use is chromium-Ni-Ti stainless steel, and described bellows is provided with ripple radome 7 outward.
The utility model is further set to, and in described insulation crust 3, is provided with getter 12, in order to make vacuum interrupter have enough vacuum degree, and is in operation and keeps the vacuum constant, and therefore, requires the air tight and not aerogenesis of inner body of the shell of vacuum interrupter.Described getter 12 can keep high vacuum degree in arc control device, for absorbing vacuum interrupter at the gas storing and run duration inner body discharges, storing and the gas that discharges of run duration inner body for absorbing vacuum interrupter, reach the shell of arc control device air tight with not aerogenesis of inner body.
In the present embodiment; the foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle; any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. a vacuum interrupter, comprise insulation crust, be fixed on quiet end casing and the moved end cover plate at insulation crust two ends, in insulation crust, be provided with the static conductive rod being fixed on quiet end casing and be slidably connected at the moving conductive rod on the cover plate of moved end, gapped between moving conductive rod and static conductive rod, static conductive rod the inner is provided with fixed contact, moving conductive rod the inner is provided with the moving contact with fixed contact homalographic, moving conductive rod is arranged with bellows outward, it is characterized in that: the described shielding cylinder being provided with in insulation crust in moving contact and fixed contact are enclosed within, described shielding cylinder is fixed in insulation crust, described shielding cylinder is the cylindrical of hollow, between its cylinder shape inner wall and outer wall, be provided with cooling bath, in described cooling bath, be provided with cooling fluid, described cylinder shape inner wall covers layer of metal net, described shielding cylinder is metallic copper material.
2. a kind of vacuum interrupter according to claim 1, is characterized in that: described moving conductive rod is oxygenless copper material, and described conducting rod one end is provided with fairlead.
3. a kind of vacuum interrupter according to claim 1, is characterized in that: described moving contact and fixed contact are the cup-like structure with skewed slot.
4. a kind of vacuum interrupter according to claim 1, is characterized in that: described bellows wall thickness is 0.12～0.14mm, and the material of use is chromium-Ni-Ti stainless steel, and described bellows is provided with ripple radome outward.
5. a kind of vacuum interrupter according to claim 1, is characterized in that: described insulation crust material is glass or high alumina ceramic.
6. a kind of vacuum interrupter according to claim 1, is characterized in that: in described insulation crust, be provided with getter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021414.8U CN203910656U (en) | 2014-01-14 | 2014-01-14 | Vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021414.8U CN203910656U (en) | 2014-01-14 | 2014-01-14 | Vacuum arc-extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910656U true CN203910656U (en) | 2014-10-29 |
Family
ID=51784911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420021414.8U Expired - Fee Related CN203910656U (en) | 2014-01-14 | 2014-01-14 | Vacuum arc-extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203910656U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576177A (en) * | 2015-02-13 | 2015-04-29 | 陈�峰 | High-voltage vacuum arc-extinguishing chamber with aerogel filled structure |
| CN105977093A (en) * | 2016-06-15 | 2016-09-28 | 台州西普电气有限公司 | Vacuum arc-extinguishing chamber of vacuum circuit breaker |
| CN106876211A (en) * | 2017-04-24 | 2017-06-20 | 淮海工学院 | A kind of vacuum interrupter |
| CN107170634A (en) * | 2017-07-12 | 2017-09-15 | 湖北大禹汉光真空电器有限公司 | A kind of exposed shielding device for accelerating vacuum interrupter to radiate |
| CN108155057A (en) * | 2016-12-05 | 2018-06-12 | 江苏宏达电气有限公司 | A kind of vacuum circuit breaker vacuum switch tube |
| CN108352272A (en) * | 2015-11-20 | 2018-07-31 | 伊顿智能动力有限公司 | The wall thickness of CU-CR floating neutral shade assemblies is maximized by moving contact gap far from center flange axial position |
| CN111430174A (en) * | 2020-05-07 | 2020-07-17 | 国网冀北电力有限公司物资分公司 | High-voltage switch |
| CN113257615A (en) * | 2021-05-12 | 2021-08-13 | 湖北大禹汉光真空电器有限公司 | Vacuum arc-extinguishing chamber with external controllable magnetic field |
| CN113363109A (en) * | 2021-05-20 | 2021-09-07 | 谭钦 | Intelligent high-voltage vacuum circuit breaker |
| CN114188191A (en) * | 2021-10-29 | 2022-03-15 | 华为数字能源技术有限公司 | Power Distribution Modules and Vehicles |
| CN118610018A (en) * | 2024-06-14 | 2024-09-06 | 泰安泰山高压开关有限公司 | A high voltage vacuum circuit breaker |
-
2014
- 2014-01-14 CN CN201420021414.8U patent/CN203910656U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576177A (en) * | 2015-02-13 | 2015-04-29 | 陈�峰 | High-voltage vacuum arc-extinguishing chamber with aerogel filled structure |
| CN108352272A (en) * | 2015-11-20 | 2018-07-31 | 伊顿智能动力有限公司 | The wall thickness of CU-CR floating neutral shade assemblies is maximized by moving contact gap far from center flange axial position |
| CN105977093A (en) * | 2016-06-15 | 2016-09-28 | 台州西普电气有限公司 | Vacuum arc-extinguishing chamber of vacuum circuit breaker |
| CN108155057A (en) * | 2016-12-05 | 2018-06-12 | 江苏宏达电气有限公司 | A kind of vacuum circuit breaker vacuum switch tube |
| CN106876211A (en) * | 2017-04-24 | 2017-06-20 | 淮海工学院 | A kind of vacuum interrupter |
| CN107170634A (en) * | 2017-07-12 | 2017-09-15 | 湖北大禹汉光真空电器有限公司 | A kind of exposed shielding device for accelerating vacuum interrupter to radiate |
| CN111430174A (en) * | 2020-05-07 | 2020-07-17 | 国网冀北电力有限公司物资分公司 | High-voltage switch |
| CN113257615A (en) * | 2021-05-12 | 2021-08-13 | 湖北大禹汉光真空电器有限公司 | Vacuum arc-extinguishing chamber with external controllable magnetic field |
| CN113363109A (en) * | 2021-05-20 | 2021-09-07 | 谭钦 | Intelligent high-voltage vacuum circuit breaker |
| CN114188191A (en) * | 2021-10-29 | 2022-03-15 | 华为数字能源技术有限公司 | Power Distribution Modules and Vehicles |
| CN118610018A (en) * | 2024-06-14 | 2024-09-06 | 泰安泰山高压开关有限公司 | A high voltage vacuum circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20170114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |