CN86200458U - Vacuum explosion chamber contact device - Google Patents
Vacuum explosion chamber contact device Download PDFInfo
- Publication number
- CN86200458U CN86200458U CN 86200458 CN86200458U CN86200458U CN 86200458 U CN86200458 U CN 86200458U CN 86200458 CN86200458 CN 86200458 CN 86200458 U CN86200458 U CN 86200458U CN 86200458 U CN86200458 U CN 86200458U
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- CN
- China
- Prior art keywords
- vacuum
- contact
- contact device
- main contact
- utility
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- 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.)
- Ceased
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a vacuum arc extinguishing chamber contact device which has the advantages of high pressure resistance, large breaking current and simple technology. The utility model is suitable for a vacuum circuit-breaker arc extinguish chamber of 10-35 kilovolt, and is formed by integrally brazing an aluminium-copper sintered alloy main contact, a vacuum archimedean screw trough running arc surface and an a magnetic stainless stiffened plate. Besides that the contact device, has good electrical property, the contact device also has good processing performance and high mechanical strength. The utility model also gives the optimal size cooperation of the main contact and the running arc surface.
Description
The invention belongs to vacuum circuit-breaker arc control device manufacturing technology.This contact apparatus is particularly suitable for the vacuum interrupter that electric pressure is a 10-35 kilovolt vacuum circuit-breaker.
Existing helicla flute magnetic blow-out contact apparatus mainly runs cambered surface and annular or tabular main contact soldering by helicla flute and forms.How the main contact material is alloy with the copper bismuth.Arc control device with this contact apparatus cut-off the level before impulse withstand voltage after the rated short circuit drop-out current does not reach cut-offfing of standard code.Make product can only use the not high occasion of those insulating requirements, thereby limited the scope of application of vacuum circuit-breaker.The vacuum interrupter of China ZN10 and ZN35 series vacuum circuit-breaker nearly all adopts this contact apparatus.What main contact was used is copper bismuth aluminium alloy; Running the cambered surface flute profile is spiral of Archimedes.The impulse withstand voltage that these arc control device cut-off before the rated short circuit drop-out current can both be by the test of standard-required; And all in various degree decline of the impulse withstand voltage after cut-offfing test does not reach standard-required.Circuit breaker for 10 kilovolts of levels, the rated lightning impulse withstand voltage of IEC standard and GB GB 1984-80 revision, GB311-83 hurdle II is all wanted 75 kilovolts, and the said goods can only reach 60 KV horizontals after cut-offfing rated short circuit drop-out current.Circuit breaker for 35 kilovolts of levels, IEC standard hurdle II requires 170 kilovolts rated lightning impulse withstand voltage, GB1984-80 revision and GB311-83 require higher, it requires product can bear 185 kilovolts rated lightning impulse withstand voltage, and the impulse withstand voltage that the said goods cut-offs after the test generally can only reach 145 kilovolts.
The contact apparatus that the cup-shaped conductor of another kind of band skewed slot and annular copper chromium sintered alloy are formed.Because cup is that intensity is bad, has influenced the raising of life of product with oxygen-free copper processing.Simultaneously, process that the sort of skewed slot had not only bothered, efficient but also low.
Task of the present invention provides a kind of improved vacuum arc-extinguishing chamber contact device of mainly being made up of copper chromium sintered alloy main contact and archimedean spiral groove race cambered surface.It can overcome the defective of above-mentioned two class vacuum arc-extinguishing chamber contact devices, and good manufacturability, has good electrical property and mechanical performance.
The present invention finishes (seeing accompanying drawing) as follows.Be soldered to annular copper chromium sintered alloy main contact (1) in the annular groove of archimedean spiral groove race cambered surface (2), simultaneously at stiffener (3) of being with isolation channel of the back side of (2) soldering.Three other parts integrally combine, and have constituted a complete contact apparatus.The bottom constitutes electrode again with conducting bar brazing.
The specific embodiment of the invention is described below:
Main contact (1) is made with 65 millimeters * 50 millimeters * 5 millimeters copper chromium sintered alloies of , archimedean spiral groove runs the vacuum copper production of cambered surface (2) with 75 millimeters * 11 millimeters of , the contact apparatus that stiffener (3) is made with the magnetism-free stainless steel of 60 millimeters * 2 millimeters of , main contact exceed archimedean spiral groove and run 3 millimeters of cambered surfaces.This contact apparatus is used for ZN-27.5/1000-12.5 types and ZN-35/1000-12.The indoor high-voltage vacuum circuit breaker of 5 type double break mouths has all passed through type approval test comprehensively.Impulse withstand voltage after arc control device cut-off can both reach the requirement of IEC and GB.And the mechanical strength of arc control device is also very high.Life test is accomplished more than 20000 times.
Replace homemade ZN10 series arc control device contact apparatus with contact apparatus of the present invention, under the situation of identical cast, size, structure, the impulse withstand voltage level after cut-offfing them is brought up to 75 kilovolts from 60 kilovolts so long.Make them reach the hurdle II standard-required of IEG and GB regulation.
Contact apparatus of the present invention also is suitable for the vacuum interrupter of drop-out current below 31.5 kilo-amperes.In this current range, their advantages are more obvious than other contact apparatus.At this moment, helicla flute runs the cambered surface maximum outside diameter in 90 millimeter.The main contact external diameter should be selected in the 90-100% scope of running the cambered surface external diameter; The width of main contact ring is the 5-15 millimeter.
Claims (2)
1, a kind of by main contact, run the vacuum arc-extinguishing chamber contact device that cambered surface and stiffener are formed, it is characterized in that: main contact (1) that this contact apparatus is made by annular copper chromium sintered alloy and the vacuum copper race cambered surface (2) with archimedean spiral groove are formed.
2, be soldered in the annular groove of archimedean spiral groove race cambered surface (2) with annular copper chromium sintered alloy main contact (1).Simultaneously at stiffener (3) of being with arc separating groove of the back side of (2) soldering.Three parts integrally combine, and have constituted a complete contact apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86200458 CN86200458U (en) | 1986-01-28 | 1986-01-28 | Vacuum explosion chamber contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86200458 CN86200458U (en) | 1986-01-28 | 1986-01-28 | Vacuum explosion chamber contact device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86200458U true CN86200458U (en) | 1986-10-29 |
Family
ID=4804469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86200458 Ceased CN86200458U (en) | 1986-01-28 | 1986-01-28 | Vacuum explosion chamber contact device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86200458U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034451C (en) * | 1992-05-08 | 1997-04-02 | 金明君 | Brazed copper contact of switch |
| CN105493215A (en) * | 2013-09-04 | 2016-04-13 | 伊顿公司 | Vacuum switching apparatus and contact assembly therefor |
-
1986
- 1986-01-28 CN CN 86200458 patent/CN86200458U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034451C (en) * | 1992-05-08 | 1997-04-02 | 金明君 | Brazed copper contact of switch |
| CN105493215A (en) * | 2013-09-04 | 2016-04-13 | 伊顿公司 | Vacuum switching apparatus and contact assembly therefor |
| CN105493215B (en) * | 2013-09-04 | 2019-11-15 | 伊顿智能动力有限公司 | Vacuum switchgear and its contact assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |
Termination date: 19870513 |
|
| CE01 | Termination of patent right |