CN203573900U - Arc-extinguish chamber taking hydrogen gas as arc-extinguishing medium - Google Patents
Arc-extinguish chamber taking hydrogen gas as arc-extinguishing medium Download PDFInfo
- Publication number
- CN203573900U CN203573900U CN201320719360.8U CN201320719360U CN203573900U CN 203573900 U CN203573900 U CN 203573900U CN 201320719360 U CN201320719360 U CN 201320719360U CN 203573900 U CN203573900 U CN 203573900U
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- Prior art keywords
- arc
- moving contact
- extinguishing medium
- hydrogen
- ring
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model provides an arc-extinguish chamber taking hydrogen gas as an arc-extinguishing medium. The arc-extinguish chamber comprises a moving contact and a static contact which are oppositely configured, wherein the moving contact is sleeved on the upper end of a moving contact rod, the lower end of the moving contact rod is fixed on an armature, the moving contact and the static contact are packaged in a sealed cavity, and the sealed cavity is filled with hydrogen gas of 3 to 4 atmos. The arc-extinguish chamber adopts advanced laser sealing and welding technology, is small in heat affected zone during sealing and welding, has few heat transferred into the contactor, can eliminate the adverse effects of sealing and welding on ceramic-metal seal, can be welded in any protective atmosphere, ensures the manufacturability and feasibility of welding, satisfies the sealing requirements, and improves the reliability; meanwhile, since the high-pressure hydrogen gas is adopted as the arc-extinguishing medium, and the open range of contacts can be shortened, thereby reducing the size and weight.
Description
Technical field
The utility model belongs to appliance switch field, be specifically related to a kind of contactor in order to hydrogen the arc control device as arc-extinguishing medium.
Background technology
Vacuum contactor is mainly comprised of vacuum interrupter and operating mechanism: two effects of reliable arc extinguishing when vacuum interrupter has by running current and frequent cut-out operating current, but can not cut off overload electric current and short circuit current; Operating mechanism consists of holding coil and the armature of ribbon core.Coil electricity, attracts armature, contactor closure; Coil losing electricity, contactor disconnects.Along with scientific and technical development, the power requirement that contactor switches is increasing, and improving power switched, reducing volume is the target that electrical apparatus factory is pursued.
Vacuum interrupter, has another name called vacuum switch tube, and its Main Function is, by managing insulating properties that interior vacuum is good, makes after mesohigh circuitry cuts power supply blow-out rapidly and suppresses electric current, avoids accident and unexpected generation.Seen vacuum interrupter is product at the beginning of the eighties in the market, as the vacuum interrupter on cKJ5, cKGI-3 series high-low pressure vacuum A. C. contactor, it comprises the moving conductive rod that the moving contact of relative configuration is connected with fixed contact, with described moving contact, static conductive rod and the bellows being connected with described fixed contact, said elements encapsulation is fixing in the enclosure, and the state that is evacuated.The main body of described shell is to be made by pottery or glass material, is inside provided with one deck radome, and the effect of this radome is to absorb the metallic particles that electric arc produces, and avoids described metallic particles to enter on insulation crust, to guarantee the insulation property of insulation crust.Because vacuum is adiabatic, i.e. poor radiation, this just need to increase the surface area of shell, thereby need to increase arc control device volume, and this does not conform to the demand that reduces contactor volume.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of arc control device using hydrogen as arc-extinguishing medium, these arc control device adopt air-tight structure, using high pressure hydrogen as medium, solved a difficult problem for generic media weak heat-dissipating, be applicable to the contact system as disjunction D.C. high-current contactor.
For solving the problems of the technologies described above, the utility model provides a kind of arc control device using hydrogen as arc-extinguishing medium, comprise moving contact and the fixed contact of relative configuration, described moving contact is socketed in movable feeler lever upper end, movable feeler lever lower end is fixed on armature, described moving contact and fixed contact are encapsulated in annular seal space, fill 3～4 atmospheric hydrogen in described annular seal space.
For the purpose of concise description problem, below to the arc control device using hydrogen as arc-extinguishing medium described in the utility model all referred to as these arc control device.
These arc control device are with hydrogen as arc-extinguishing medium, and hydrogen is the lightest gas, at 0 ℃ and a standard atmosphere, depress, and every liter of hydrogen only has 0.09 g, is only equivalent to ten four 1/5th of same volume air weight.Hydrogen has good heat conductivility simultaneously, and in the time of 0 ℃, thermal conductivity is 0.1745K Wm
-1k
-1(data are from the 53rd page of the < < vacuum design handbook > > third edition, and Da Daoan is outstanding).According to the Ba Shen curve of gas, the gas of elevated pressures is the approach that improves electric insulation, but considers manufacturability, and arc control device are filled to 3～4 atmospheric hydrogen, can meet the requirement of manufacturability and design simultaneously.
Described annular seal space by ceramic package, can cut down ring and metal sealer surround.In order there to be good insulative dielectric performance, annular seal space adopts the form of ceramic package and metal sealer sealing-in, adopt Vacuum Soldering Technology, ceramic package adopts 95 alumina ceramic materials, metal sealer adopts the 4J33 Langaloy material being close with the ceramic package material coefficient of expansion, overcome different materials thermal coefficient of expansion difference and the problem of generation stress, sealing index can reach 1 × 10
-4pacm
3/ s.
Can cut down the envelope comb that is useful on filling hydrogen on ring.Envelope row's copper pipe is used for bleeding and inflating, and after inflate, blocks sealing by the method for cold welding, thus the sealing of increase annular seal space, reduction leak rate.
Described fixed contact is fixed on ceramic package by transition rings, and fixed contact material is copper, after copper and ceramic package welding, easily snaps, and increase transition rings between copper fixed contact and ceramic package, can make fixed contact more be securely fixed on ceramic package.
Armature has fairlead outward, and fairlead is fixedly connected with metal sealer, gapped between armature and metal sealer, and this gap is greater than the distance between moving contact and fixed contact.When after the holding coil energising of contactor, produce magnetic field, armature moves along fairlead, and owing to being fixed with movable feeler lever on armature, movable feeler lever also synchronously moves up, thereby moving contact and fixed contact are connected.
There is a upper back-up ring moving contact upper end, and there is a lower back-up ring moving contact lower end, and upper back-up ring and lower back-up ring are all fixed on movable feeler lever, between lower back-up ring and moving contact, have spring.Back-up ring is that spring can be pressed on moving contact on fixed contact in order to limit the scope of activities of moving contact on movable feeler lever.After moving contact contacts with fixed contact, due to still gapped between armature and metal sealer, armature continues mobile, now, moving contact with fixed contact close contact, so, moving contact invariant position, and movable feeler lever moves on can continuing, extrusion spring, thereby moving contact is compressed on upper static contact, guarantee circuit connection.
These arc control device have adopted advanced Laser seal welding technique, and during soldering and sealing, heat affected area is little, and the heat that imports contactor into is few; can eliminate the adverse effect of soldering and sealing to ceramic-metal sealed knot; can in any protective atmosphere, weld, guarantee manufacturability and the feasibility of welding, meet the requirement of sealing.
Arc control device, as the critical component of contactor, play a part crucial to the performance of product.These arc control device adopt hermetically-sealed construction, have improved reliability, simultaneously owing to having adopted high pressure hydrogen as arc-extinguishing medium, can shorting contacts open distance, thereby reduced volume, weight reduction.The contactor of applying these arc control device can be widely used in the electrical source exchange of new-energy automobile and discharge and recharge, mine electrical appliance, and Aero-Space etc., have good application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of these arc control device.
Fig. 2 is the A-A cutaway view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate the utility model:
As shown in Figures 1 and 2, the arc control device using hydrogen as arc-extinguishing medium, comprise relative configuration moving contact 1 and fixed contact 2, ceramic package 3, can cut down ring 4 and metal sealer 5.Described moving contact 1 is socketed in movable feeler lever 7 upper ends, there is a upper back-up ring 8 moving contact 1 upper end, there is a lower back-up ring 9 lower end, upper back-up ring 8 and lower back-up ring 9 are all fixed on movable feeler lever 7 upper ends, between lower back-up ring 9 and moving contact 1, there is spring 10, movable feeler lever 7 lower ends are fixed on armature 11, outside armature 11, there is fairlead 12, fairlead 12 adopts Laser seal welding technique to weld together with metal sealer 5, the material of metal sealer 5 is yoke, gapped 13 between armature 11 and metal sealer 12, this gap 13 is greater than the distance between moving contact 1 and fixed contact 2; Described fixed contact 2 is welded on ceramic package 3 by transition rings 14, fixed contact 2 materials are copper, after copper and ceramic welding, easily snap, and increase transition rings 14 between copper fixed contact 2 and ceramic package 3, can make fixed contact 2 be welded on more securely on ceramic package 3.Described ceramic package 3, can cut down ring 4 and metal sealer 5 use Vacuum Soldering Technology welded together, surround annular seal space 6, make annular seal space 6 have good insulative dielectric performance, ceramic package 3 adopts 95 alumina ceramic materials, metal sealer 5 adopts the 4J33 Langaloy material being close with the ceramic package 3 material coefficients of expansion, overcome different materials thermal coefficient of expansion difference and the problem of generation stress, sealing index can reach 1 × 10
-4pacm
3/ s.Moving contact 1 and fixed contact 2 are encapsulated in annular seal space 6, can cut down the envelope comb 15 that is useful on filling hydrogen on ring 4, envelope row's copper pipe 15 is used for bleeding and inflating, in chamber to be sealed, fill after 3～4 atmospheric hydrogen, block sealing by the method for cold welding, thereby increase the sealing of annular seal space 6, reduce leak rate.
These arc control device adopt hermetically-sealed construction, have improved reliability, simultaneously owing to having adopted high pressure hydrogen as arc-extinguishing medium, can shorting contacts open distance, thereby reduced volume, weight reduction.The contactor of applying these arc control device can be widely used in the electrical source exchange of new-energy automobile and discharge and recharge, mine electrical appliance, and Aero-Space etc., have good application prospect.
Claims (5)
1. the arc control device using hydrogen as arc-extinguishing medium, comprise moving contact and the fixed contact of relative configuration, described moving contact is socketed in movable feeler lever upper end, movable feeler lever lower end is fixed on armature, described moving contact and fixed contact are encapsulated in annular seal space, it is characterized in that: in described annular seal space, fill 3～4 atmospheric hydrogen.
2. the arc control device using hydrogen as arc-extinguishing medium as claimed in claim 1, is characterized in that: described annular seal space by ceramic package, can cut down ring and metal sealer surrounds, can cut down and on ring, be useful on the envelope comb of filling hydrogen.
3. the arc control device using hydrogen as arc-extinguishing medium as claimed in claim 2, is characterized in that: described fixed contact is fixed on ceramic package by transition rings.
4. the arc control device using hydrogen as arc-extinguishing medium as claimed in claim 2, is characterized in that: armature has fairlead outward, fairlead is fixedly connected with metal sealer, gapped between armature and metal sealer.
5. the arc control device using hydrogen as arc-extinguishing medium as claimed in claim 1, is characterized in that: there is a upper back-up ring moving contact upper end, and there is a lower back-up ring moving contact lower end, and upper back-up ring and lower back-up ring are all fixed on movable feeler lever, between lower back-up ring and moving contact, have spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320719360.8U CN203573900U (en) | 2013-11-15 | 2013-11-15 | Arc-extinguish chamber taking hydrogen gas as arc-extinguishing medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320719360.8U CN203573900U (en) | 2013-11-15 | 2013-11-15 | Arc-extinguish chamber taking hydrogen gas as arc-extinguishing medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203573900U true CN203573900U (en) | 2014-04-30 |
Family
ID=50541615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320719360.8U Expired - Fee Related CN203573900U (en) | 2013-11-15 | 2013-11-15 | Arc-extinguish chamber taking hydrogen gas as arc-extinguishing medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203573900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560045A (en) * | 2013-11-15 | 2014-02-05 | 中国电子科技集团公司第四十研究所 | Arc extinguishing chamber with hydrogen serving as arc extinguishing medium |
| WO2017036313A1 (en) * | 2015-08-31 | 2017-03-09 | Byd Company Limited | Battery connector, battery module and electric vehicle |
| CN111584259A (en) * | 2020-03-23 | 2020-08-25 | 中国航天时代电子有限公司 | High-reliability limiting device |
-
2013
- 2013-11-15 CN CN201320719360.8U patent/CN203573900U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560045A (en) * | 2013-11-15 | 2014-02-05 | 中国电子科技集团公司第四十研究所 | Arc extinguishing chamber with hydrogen serving as arc extinguishing medium |
| WO2017036313A1 (en) * | 2015-08-31 | 2017-03-09 | Byd Company Limited | Battery connector, battery module and electric vehicle |
| CN111584259A (en) * | 2020-03-23 | 2020-08-25 | 中国航天时代电子有限公司 | High-reliability limiting device |
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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: 20140430 Termination date: 20181115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |