CN202888064U - Long-service-life vacuum arc-extinguishing chamber - Google Patents
Long-service-life vacuum arc-extinguishing chamber Download PDFInfo
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- CN202888064U CN202888064U CN 201220568345 CN201220568345U CN202888064U CN 202888064 U CN202888064 U CN 202888064U CN 201220568345 CN201220568345 CN 201220568345 CN 201220568345 U CN201220568345 U CN 201220568345U CN 202888064 U CN202888064 U CN 202888064U
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- corrugated pipe
- corrugated
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Abstract
The utility model provides a long-service-life vacuum arc-extinguishing chamber. The vacuum arc-extinguishing chamber comprises a contact, an insulation shell and a corrugated pipe, wherein one end of the corrugated pipe is connected with a movable conducting rod, the other end of the corrugated pipe is connected with the insulation shell through a movable end cover plate, and the corrugated surface of the corrugated pipe is an arc surface. The corrugated surface of the corrugated pipe is produced into the arc surface, so that the corrugated pipe has good elasticity, and under the condition of constant total corrugated pipe length, the smaller the corrugated pipe wave pitch and the wave thickness are, the more the waves are; and under the condition of constant corrugated pipe compression distance and tensile elongation, the more the waves are, the smaller the compression distance and tensile elongation of a single waves are, so that the service life of the corrugated pipe is benefited.
Description
Technical field
The utility model belongs to technical field of vacuum switches, is specifically related to a kind of Longevity Vacuum Interrupter, can reach mechanical endurance 200,000 times.
Background technology
Along with popularizing and the fast-developing needs of high-speed railway of China's electric railway, the circuit breaker that uses on electric railway and the high-speed railway can not satisfy its service requirement (be 10000 mechanical endurance of machinery industry standard JB/T8738-2008 specified vacuum arc control device) with vacuum interrupter 10000 mechanical enduranves, and vacuum interrupter depends primarily on two key technologies mechanical endurance: the one, and the sealing technology between metallized ceramic spare and the metal parts; The 2nd, finish vacuum interrupter and close vital part---the life-span of bellows of closing, cut-offfing.The bellows that uses in vacuum interrupter at present adopts the hydroforming bellows usually, its manufacture method: 0.12 ~ 0.18 thick thin-walled part is rolled into the required diameter of bellows, be welded into light-wall pipe with argon arc welding method, again light-wall pipe is enclosed within on the bellow forming, make it the moulding bellows with hydraulic method, there is following defective in the bellows that this kind method is made: the one, and the corrugated of its each ripple is the plane, and the elasticity of ripple is relatively poor; The 2nd, the pitch of waves is large, and the thickness of convolution is thick.In vacuum interrupter, the total length of bellows is constant, the pitch of waves is large, the thickness of convolution, and then wave number reduces, and vacuum interrupter is expert in the fortune process, every kind of bellows compression distance and tensile elongation are constant, wave number is few, and the compression of single ripple and stretching distance are just large, are disadvantageous to the useful life of bellows like this, and the anti-fatigue life of bellows has determined the mechanical endurance of vacuum interrupter, therefore is necessary to improve.
The utility model content
The technical problem that the utility model solves: a kind of Longevity Vacuum Interrupter is provided, crooked arcwall face is made on the corrugated of the ripple of the critical component bellows in it, make the good springiness of bellows, under bellows overall length controlled condition, the pitch of waves of bellows is little, and the little then wave number of the thickness of ripple is many, like this under the compression distance and tensile elongation controlled condition of bellows, wave number at most compression distance and the tensile elongation of single ripple is just little, and this useful life to bellows is very favourable.
The technical solution adopted in the utility model: Longevity Vacuum Interrupter, comprise contact, insulation crust and bellows, described bellows one end is connected with the moving conductive rod of motion, the bellows other end is connected with insulation crust by the moved end cover plate, and the corrugated of the ripple of described bellows is crooked arcwall face.
One of optimal way, the pitch of waves of described bellows are 1.5mm, and the thickness of ripple is 0.1mm.
One of optimal way, the pitch of waves of described bellows are 1.8mm, and the thickness of ripple is 0.127mm.
The utility model is compared with prior art simple in structure, and the whole fatigue resistance performance of bellows is good, can obviously prolong the useful life of vacuum interrupter, is beneficial to and applies.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is bellows structure schematic diagram of the present utility model;
Fig. 3 is bellows partial enlarged drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1-3 a kind of embodiment of the present utility model is described.
Longevity Vacuum Interrupter, comprise contact 3, insulation crust 9 and bellows 8, described bellows 8 one ends are connected with the moving conductive rod 5 of motion, and bellows 8 other ends are connected with insulation crust 9 by moved end cover plate 10, and the corrugated of the ripple 11 of described bellows 8 is crooked arcwall face.External diameter when bellows 8
Internal diameter
Pitch of waves 1.5mm then, thickness of convolution 0.1mm.Work as outside diameter of bel
Internal diameter
Pitch of waves 1.8mm then, thickness of convolution 0.127mm.Under bellows 8 overall length controlled conditions, the pitch of waves is little, and the little then wave number of the thickness of ripple is many, like this under the compression distance and tensile elongation controlled condition of bellows 8, wave number is many, and the compression distance of single ripple and tensile elongation are just little, and be favourable this useful life to bellows 8.Arcwall face is made on the corrugated, the good springiness of ripple then, and also be favourable this useful life to bellows 8.
The manufacturing process of bellows 8: first the punching out of thin-walled band is become crooked corrugated, then with argon arc welding each two ends, crooked corrugated are stacked from beginning to end and weld together, just make bellows 8, be commonly called as welding bellows.
Static conductive rod 2 of the present utility model and quiet cover plate 1, static conductive rod 2 becomes quiet die assemblies with contact 3 usefulness AgCu scolder solderings, is the air-tightness weld seam between static conductive rod 2 and the quiet end casing 1, and requirement can not be leaked gas.Moving conductive rod 5 and protective cover 7, moving conductive rod 5 and ripple panel 6, ripple panel 6 and bellows 8 become tube core to make up with the soldering of AgCu scolder between bellows 8 and the moved end cover plate 10.Here all weld seams are the air-tightness weld seam, require can not leak gas after the soldering.Moved end cover plate 10 in insulation crust 9 and the moving die assemblies with quiet end casing 1 in the quiet die assemblies, becomes the vacuum interrupter assembly behind the placement AgCu scolder ring between the step of insulation crust 9 and the shielding cylinder 4.Above-mentioned vacuum extinction chamber component is positioned in the high vacuum one-step seal-exhaust stove carries out exhaust and sealing-in, just make a vacuum interrupter after coming out of the stove, the indoor vacuum degree of vacuum extinction≤1.33 * 10
-3Pa.
Operation principle: as shown in Figure 1, the A end is called the moved end, and the B end is called quiet end.The B end is fixed on the quiet end support of circuit breaker, and the A end is fixed on the insulated tension pole, and insulated tension pole is connected with the connecting rod of permanent magnet mechanism.When the permanent magnet mechanism gate-dividing state, moving conductive rod 5 move up (C arrow), because moved end cover plate 10 and insulation crust 9, moved end cover plate 10 is brazed together with bellows 8 one ends, bellows 8 these ends are static, and the other end of bellows 8 and ripple panel 6 are brazed together, ripple panel 6 is brazed together with moving conductive rod 5 again, so when moving up along with moving guide rod 5, bellows 8 is compressed.Be 10mm if pull open ultimate range between two contact blades, compressed 10mm of bellows so.When permanent magnet mechanism was in "on" position, moving conductive rod 5 was by moving down (D arrow), until till contact overlaps, bellows 8 10mm that is stretched at this moment finishes separating brake and closes a floodgate once, also claims the one-time mechanical life-span.Loop like this separating brake and combined floodgate, 8 life-spans of bellows are affected, we require in 200,000 times separating brake and making process, it is air tight that micro-crack does not occur bellows 8, so just can guarantee that vacuum interrupter is air tight, guarantee that vacuum interrupter parameters index can both meet design requirement, thereby circuit breaker can normally be moved.
Above-described embodiment is preferred embodiment of the present utility model, is not to limit the utility model practical range, so all equivalences of being done with the described content of the utility model claim change, all should be included within the utility model claim scope.
Claims (3)
1. Longevity Vacuum Interrupter, comprise contact (3), insulation crust (9) and bellows (8), described bellows (8) one ends are connected with the moving conductive rod (5) of motion, bellows (8) other end is connected with insulation crust (9) by moved end cover plate (10), it is characterized in that: the corrugated of the ripple (11) of described bellows (8) is crooked arcwall face.
2. Longevity Vacuum Interrupter according to claim 1, it is characterized in that: the pitch of waves of described bellows (8) is 1.5mm, the thickness of ripple (11) is 0.1mm.
3. Longevity Vacuum Interrupter according to claim 1, it is characterized in that: the pitch of waves of described bellows (8) is 1.8mm, the thickness of ripple (11) is 0.127mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568345 CN202888064U (en) | 2012-10-31 | 2012-10-31 | Long-service-life vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568345 CN202888064U (en) | 2012-10-31 | 2012-10-31 | Long-service-life vacuum arc-extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202888064U true CN202888064U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220568345 Expired - Lifetime CN202888064U (en) | 2012-10-31 | 2012-10-31 | Long-service-life vacuum arc-extinguishing chamber |
Country Status (1)
| Country | Link |
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| CN (1) | CN202888064U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051192A (en) * | 2014-07-08 | 2014-09-17 | 宝鸡市晨光真空电器有限责任公司 | Ceramic low-voltage contactor |
| CN109841452A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | A kind of vacuum interrupter and its contact shielding construction |
| CN109841451A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | Vacuum interrupter and the dc bypass switch for using the arc-chutes |
-
2012
- 2012-10-31 CN CN 201220568345 patent/CN202888064U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051192A (en) * | 2014-07-08 | 2014-09-17 | 宝鸡市晨光真空电器有限责任公司 | Ceramic low-voltage contactor |
| CN109841452A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | A kind of vacuum interrupter and its contact shielding construction |
| CN109841451A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | Vacuum interrupter and the dc bypass switch for using the arc-chutes |
| CN109841452B (en) * | 2017-11-28 | 2022-08-19 | 天津平高智能电气有限公司 | Vacuum arc extinguish chamber and contact shielding structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: High tech Zone 721013 Shaanxi city of Baoji province Xing Ke Lu No. 49 Patentee after: BAOJI CHENGUANG VACUUM ELECTRICAL APPLIANCE CO.,LTD. Patentee after: Yao Shibin Address before: 721003 Baoji province Shaanxi city Weibin District Ma Ying Zhen Xu Guang Cun, Shahe Dong Patentee before: BAOJI CHENGUANG VACUUM ELECTRIC Co.,Ltd. Patentee before: Yao Shibin |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
|
| CX01 | Expiry of patent term |