CN108565178B - Vacuum arc-extinguishing chamber structure with double vacuum chambers - Google Patents
Vacuum arc-extinguishing chamber structure with double vacuum chambers Download PDFInfo
- Publication number
- CN108565178B CN108565178B CN201810645520.6A CN201810645520A CN108565178B CN 108565178 B CN108565178 B CN 108565178B CN 201810645520 A CN201810645520 A CN 201810645520A CN 108565178 B CN108565178 B CN 108565178B
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- vacuum
- vacuum chamber
- cover plate
- chamber
- end piece
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- 230000003068 static effect Effects 0.000 claims description 43
- 239000000919 ceramic Substances 0.000 claims description 32
- 238000009413 insulation Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims 3
- 238000004880 explosion Methods 0.000 description 5
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a double-vacuum-chamber vacuum arc-extinguishing chamber, which comprises an outer vacuum chamber (1) and an inner vacuum chamber (2), wherein the inner vacuum chamber (2) is arranged in the outer vacuum chamber (1); still include quiet end piece (3) and move end piece (4), quiet end piece (3) pass outer vacuum chamber (1) and interior vacuum chamber (2) from bottom to top in proper order, move end piece (4) from top to bottom and pass outer vacuum chamber (1) and interior vacuum chamber (2) in proper order. The invention has the arc-extinguishing chambers with two vacuum chambers, can reduce the probability of gas leakage or low vacuum problem, improve the reliability of products, avoid the influence of the breaking capacity of the vacuum arc-extinguishing chambers, and greatly improve the service life of the vacuum arc-extinguishing chambers.
Description
Technical Field
The invention relates to an electric element, in particular to a vacuum arc-extinguishing chamber structure with double vacuum chambers.
Background
The vacuum arc-extinguishing chamber, also called vacuum switch tube, is the core component of the medium-high voltage power switch, and has the main function of using the high vacuum in the tube as an arc-extinguishing insulating medium, so that the medium-high voltage power switch can quickly extinguish an arc and inhibit current after cutting off the power supply, thereby avoiding accidents and accidents. The vacuum arc-extinguishing chamber is an indispensable element of the vacuum switch and is a heart of the vacuum switch, and the design structure and the design quality of the vacuum arc-extinguishing chamber determine the main performance of the vacuum switch. The vacuum arc-extinguishing chamber is a vacuum chamber which is formed by a ceramic insulating shell, a movable end piece and a static end piece which are positioned at a determined position according to the design structure requirement and a bellows and a movable cover plate and a static cover plate which are combined to form a sealed inner space, namely the vacuum chamber, so that the vacuum degree in the effective time is ensured to meet the specified requirement. The vacuum has high insulation strength and can extinguish the arc, the distance between the fixed electrodes of the vacuum arc extinguishing chamber is increased along with the increase of the vacuum degree, and the insulation strength is in a saturated state when the vacuum degree reaches a certain vacuum degree; when the current is cut off, after the zero crossing of the alternating current arc is extinguished, the vacuum medium obtains high initial recovery strength, and the normal cut-off of the vacuum switch is ensured. If the vacuum arc-extinguishing chamber has air leakage or low vacuum problem, the vacuum degree can not meet the specified requirement, the arc-extinguishing chamber must be scrapped, otherwise the breaking performance of the vacuum switch can be affected, and the loss and even the danger are caused. Therefore, the existing vacuum arc-extinguishing chamber has the problems that the vacuum chamber is easy to leak, the breaking capacity of the vacuum arc-extinguishing chamber is affected, and the service life of the vacuum arc-extinguishing chamber is short.
Disclosure of Invention
The invention aims to provide a vacuum arc-extinguishing chamber structure with double vacuum chambers. The invention has the arc-extinguishing chambers with two vacuum chambers, can reduce the probability of gas leakage or low vacuum problem, improve the reliability of products, avoid the influence of the breaking capacity of the vacuum arc-extinguishing chambers, and greatly improve the service life of the vacuum arc-extinguishing chambers.
The technical scheme of the invention is as follows: a vacuum arc-extinguishing chamber structure with double vacuum chambers comprises an outer vacuum chamber and an inner vacuum chamber, wherein the inner vacuum chamber is arranged in the outer vacuum chamber; the device also comprises a static end piece and a movable end piece, wherein the static end piece sequentially passes through the outer vacuum chamber and the inner vacuum chamber from bottom to top, and the movable end piece sequentially passes through the outer vacuum chamber and the inner vacuum chamber from top to bottom.
In the vacuum arc-extinguishing chamber structure with the double vacuum chambers, the inner vacuum chamber comprises a ceramic insulating shell I, a static cover plate II is arranged at the lower end of the ceramic insulating shell I, a movable cover plate I is arranged at the upper end of the ceramic insulating shell I, and the movable cover plate I and the static cover plate II are respectively welded with the ceramic insulating shell I in a vacuum manner.
In the vacuum arc-extinguishing chamber structure with the double vacuum chambers, the outer vacuum chamber comprises a ceramic insulating shell II, a static cover plate I is arranged at the lower end of the ceramic insulating shell II, a movable cover plate II is arranged at the upper end of the ceramic insulating shell II, and the static cover plate I and the movable cover plate II are respectively welded with the ceramic insulating shell II in a vacuum manner.
In the vacuum arc-extinguishing chamber structure with the double vacuum chambers, the static end piece is arranged at the lower end part of the outer vacuum chamber, and sequentially passes through the outer vacuum chamber and the inner vacuum chamber through the static cover plate I and the static cover plate II, and the static end piece is respectively welded with the static cover plate I and the static cover plate II in a vacuum manner.
In the vacuum arc-extinguishing chamber structure with the double vacuum chambers, the movable end piece is arranged at the upper end part of the outer vacuum chamber, the middle part of the movable end piece is in vacuum welding with the movable cover plate I through the corrugated pipe I, and the top of the movable end piece is in vacuum welding with the movable cover plate II through the corrugated pipe II.
In the aforementioned vacuum arc-extinguishing chamber structure with double vacuum chambers, the outer vacuum chamber and the inner vacuum chamber are both sealed vacuum inner spaces.
Compared with the prior art, the arc extinguishing chamber with two vacuum chambers is designed and manufactured by adopting a ceramic insulation nested structure, and the arc extinguishing chamber with 2 vacuum chambers is designed by adding one vacuum chamber; the static end piece is welded with the static cover plates I and II in vacuum, the movable end piece is welded with the movable cover plate I through the corrugated pipe I, and the static cover plate II, the movable cover plate I and the ceramic insulating shell I are welded in vacuum, so that a sealed vacuum inner space, namely an inner vacuum chamber, is formed; after the welding of the inner vacuum chamber is finished, the movable end assembly II is welded with the movable cover plate II through the corrugated pipe II, and the static cover plate I, the movable cover plate II and the ceramic insulating shell II are subjected to vacuum welding, so that a sealed vacuum inner space, namely the outer vacuum chamber, is formed.
By utilizing the structure of the nested ceramic insulating shell of the ceramic insulating shell, the problems of influence on the breaking capacity and service life of the vacuum arc-extinguishing chamber caused by the occurrence of air leakage or low vacuum problem of any one of the inner and outer vacuum chambers are solved; according to conventional production control, one vacuum chamber leak rate is 1 ‱, and two nested vacuum chambers leak rates are 1 ‱ ×1 ‱ =1 ppm; the reliability performance of the product is achieved.
In summary, the arc extinguishing chamber with two vacuum chambers can reduce the probability of air leakage or low vacuum problem, improve the reliability of products, avoid the influence of the breaking capacity of the vacuum arc extinguishing chamber, and greatly improve the service life of the vacuum arc extinguishing chamber.
Drawings
FIG. 1 is a schematic structural view A of the present invention;
FIG. 2 is a schematic diagram B of the structure of the present invention;
the marks in the drawings are: 1-outer vacuum chamber, 2-inner vacuum chamber, 3-static end piece, 4-movable end piece, 5-ceramic insulating shell I, 6-static cover plate II, 7-movable cover plate I, 8-ceramic insulating shell II, 9-static cover plate I, 10-movable cover plate II, 11-corrugated pipe I, 12-corrugated pipe II and 13-fracture.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Examples. A vacuum arc extinguishing chamber structure with double vacuum chambers, as shown in fig. 1 and 2, comprises an outer vacuum chamber 1 and an inner vacuum chamber 2, wherein the inner vacuum chamber 2 is arranged in the outer vacuum chamber 1; still include quiet end piece 3 and move end piece 4, quiet end piece 3 passes outer vacuum chamber 1 and interior vacuum chamber 2 from bottom to top in proper order, moves end piece 4 and passes outer vacuum chamber 1 and interior vacuum chamber 2 from top to bottom in proper order.
The inner vacuum chamber 2 comprises a ceramic insulating shell I5, a static cover plate II 6 is arranged at the lower end of the ceramic insulating shell I5, a movable cover plate I7 is arranged at the upper end of the ceramic insulating shell I5, and the movable cover plate I7 and the static cover plate II 6 are respectively welded with the ceramic insulating shell I5 in vacuum; the outer vacuum chamber 1 comprises a ceramic insulation shell II 8, a static cover plate I9 is arranged at the lower end of the ceramic insulation shell II 8, a movable cover plate II 10 is arranged at the upper end of the ceramic insulation shell II 8, and the static cover plate I9 and the movable cover plate II 10 are respectively welded with the ceramic insulation shell II 8 in vacuum; the static end piece 3 is arranged at the lower end part of the outer vacuum chamber 1, the static end piece 3 sequentially passes through the outer vacuum chamber 1 and the inner vacuum chamber 2 through the static cover plate I9 and the static cover plate II 6, and the static end piece 3 is respectively welded with the static cover plate I9 and the static cover plate II 6 in a vacuum manner; the movable end piece 4 is arranged at the upper end part of the outer vacuum chamber 1, the middle part of the movable end piece 4 is welded with the movable cover plate I7 in vacuum through a corrugated pipe I11, and the top of the movable end piece 4 is welded with the movable cover plate II 10 in vacuum through a corrugated pipe II 12; the outer vacuum chamber 1 and the inner vacuum chamber 2 are sealed vacuum inner spaces.
Working principle: when the vacuum switch works, the inner corrugated pipes I11 and II of the vacuum arc-extinguishing chamber are compressed, the movable end piece 4 is pulled apart (the pulling distance is the fracture 13 of the product), and the aim of cutting off is fulfilled by the movable end piece 4 and the static end piece 3 in the inner vacuum chamber 2. This two vacuum chamber vacuum explosion chambers through setting up inside and outside vacuum chamber 1 for the explosion chamber has two relatively independent vacuum environment, when long-term use, if the gas leakage takes place for single vacuum chamber, still another vacuum chamber can guarantee that the vacuum degree of explosion chamber can not receive the influence, has guaranteed the performance of whole vacuum explosion chamber, has improved the reliability of vacuum explosion chamber.
Claims (4)
1. A vacuum interrupter structure with two vacuum chambers, its characterized in that: comprises an outer vacuum chamber (1) and an inner vacuum chamber (2), wherein the inner vacuum chamber (2) is arranged in the outer vacuum chamber (1); the device also comprises a static end piece (3) and a movable end piece (4), wherein the static end piece (3) sequentially passes through the outer vacuum chamber (1) and the inner vacuum chamber (2) from bottom to top, and the movable end piece (4) sequentially passes through the outer vacuum chamber (1) and the inner vacuum chamber (2) from top to bottom; the inner vacuum chamber (2) comprises a ceramic insulating shell I (5), a static cover plate II (6) is arranged at the lower end of the ceramic insulating shell I (5), a movable cover plate I (7) is arranged at the upper end of the ceramic insulating shell I (5), and the movable cover plate I (7) and the static cover plate II (6) are respectively welded with the ceramic insulating shell I (5) in a vacuum manner; the outer vacuum chamber (1) comprises a ceramic insulation shell II (8), a static cover plate I (9) is arranged at the lower end of the ceramic insulation shell II (8), a movable cover plate II (10) is arranged at the upper end of the ceramic insulation shell II (8), and the static cover plate I (9) and the movable cover plate II (10) are respectively welded with the ceramic insulation shell II (8) in a vacuum mode.
2. A vacuum interrupter arrangement having dual vacuum chambers as defined in claim 1, wherein: the static end piece (3) is arranged at the lower end part of the outer vacuum chamber (1), the static end piece (3) sequentially passes through the outer vacuum chamber (1) and the inner vacuum chamber (2) through the static cover plate I (9) and the static cover plate II (6), and the static end piece (3) is respectively welded with the static cover plate I (9) and the static cover plate II (6) in a vacuum manner.
3. A vacuum interrupter arrangement having dual vacuum chambers as defined in claim 1, wherein: the movable end piece (4) is arranged at the upper end part of the outer vacuum chamber (1), the middle part of the movable end piece (4) is in vacuum welding with the movable cover plate I (7) through the corrugated pipe I (11), and the top of the movable end piece (4) is in vacuum welding with the movable cover plate II (10) through the corrugated pipe II (12).
4. A vacuum interrupter arrangement having dual vacuum chambers as defined in claim 1, wherein: the outer vacuum chamber (1) and the inner vacuum chamber (2) are sealed vacuum inner spaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645520.6A CN108565178B (en) | 2018-06-21 | 2018-06-21 | Vacuum arc-extinguishing chamber structure with double vacuum chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645520.6A CN108565178B (en) | 2018-06-21 | 2018-06-21 | Vacuum arc-extinguishing chamber structure with double vacuum chambers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108565178A CN108565178A (en) | 2018-09-21 |
| CN108565178B true CN108565178B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810645520.6A Active CN108565178B (en) | 2018-06-21 | 2018-06-21 | Vacuum arc-extinguishing chamber structure with double vacuum chambers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108565178B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599636A (en) * | 2020-06-04 | 2020-08-28 | 深圳供电局有限公司 | Vacuum circuit breaker |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2062108A5 (en) * | 1969-04-24 | 1971-06-25 | Elektro App Werke Veb | |
| US3597558A (en) * | 1968-09-30 | 1971-08-03 | Inst Prueffeld Elekt | Multiple-walled arc-quenching chamber for vacuum switching devices |
| CN102231345A (en) * | 2011-05-31 | 2011-11-02 | 中国振华电子集团宇光电工有限公司 | Double-chamber three-working position vacuum arc extinguish chamber for solid switch |
| CN202888059U (en) * | 2012-11-16 | 2013-04-17 | 锦州华光玻璃开关管有限公司 | Low-voltage large-open circuit ceramic vacuum switch tube |
| KR101264226B1 (en) * | 2011-11-07 | 2013-05-14 | 한국전기연구원 | Atmospheric pressure identity apparatus of vacuum interrupter for vacuum circuit breaker |
| CN203674069U (en) * | 2014-01-09 | 2014-06-25 | 杭州旭虹真空电器有限公司 | Vacuum arc-extinguishing chamber with positioning function sealing ring |
| CN104465208A (en) * | 2014-12-23 | 2015-03-25 | 哈尔滨朗昇电气股份有限公司 | Vacuum arc-extinguishing chamber and method for vacuum circuit breaker |
| CN205122472U (en) * | 2015-11-12 | 2016-03-30 | 成都旭光电子股份有限公司 | Vacuum arc extinguishing chamber |
| CN208478231U (en) * | 2018-06-21 | 2019-02-05 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | A kind of vacuum extinction cell structure with dual-vacuum chamber |
-
2018
- 2018-06-21 CN CN201810645520.6A patent/CN108565178B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597558A (en) * | 1968-09-30 | 1971-08-03 | Inst Prueffeld Elekt | Multiple-walled arc-quenching chamber for vacuum switching devices |
| FR2062108A5 (en) * | 1969-04-24 | 1971-06-25 | Elektro App Werke Veb | |
| CN102231345A (en) * | 2011-05-31 | 2011-11-02 | 中国振华电子集团宇光电工有限公司 | Double-chamber three-working position vacuum arc extinguish chamber for solid switch |
| KR101264226B1 (en) * | 2011-11-07 | 2013-05-14 | 한국전기연구원 | Atmospheric pressure identity apparatus of vacuum interrupter for vacuum circuit breaker |
| CN202888059U (en) * | 2012-11-16 | 2013-04-17 | 锦州华光玻璃开关管有限公司 | Low-voltage large-open circuit ceramic vacuum switch tube |
| CN203674069U (en) * | 2014-01-09 | 2014-06-25 | 杭州旭虹真空电器有限公司 | Vacuum arc-extinguishing chamber with positioning function sealing ring |
| CN104465208A (en) * | 2014-12-23 | 2015-03-25 | 哈尔滨朗昇电气股份有限公司 | Vacuum arc-extinguishing chamber and method for vacuum circuit breaker |
| CN205122472U (en) * | 2015-11-12 | 2016-03-30 | 成都旭光电子股份有限公司 | Vacuum arc extinguishing chamber |
| CN208478231U (en) * | 2018-06-21 | 2019-02-05 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | A kind of vacuum extinction cell structure with dual-vacuum chamber |
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| CN108565178A (en) | 2018-09-21 |
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