CN104810195A - Protecting structure for vacuum air extinguish chamber corrugated pipe under high gas pressure and application - Google Patents
Protecting structure for vacuum air extinguish chamber corrugated pipe under high gas pressure and application Download PDFInfo
- Publication number
- CN104810195A CN104810195A CN201510224387.3A CN201510224387A CN104810195A CN 104810195 A CN104810195 A CN 104810195A CN 201510224387 A CN201510224387 A CN 201510224387A CN 104810195 A CN104810195 A CN 104810195A
- Authority
- CN
- China
- Prior art keywords
- vacuum arc
- vacuum
- extinguish chamber
- corrugated pipe
- magnetic
- 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.)
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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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- 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
- H01H33/662—Housings or protective screens
- H01H33/66238—Specific bellows details
Abstract
The invention discloses a protecting structure for a vacuum air extinguish chamber corrugated pipe under high gas pressure and application. The protecting structure comprises a hollow metal drum and a corrugated pipe outside sealing device, the hollow metal barrel is arranged at the end, positioned outside a vacuum arc extinguish chamber movable end cap, of a vacuum arc extinguish chamber movable electroconductive rod, one end of the corrugated pipe outside sealing device is arranged on the lower portion of the vacuum arc extinguish chamber movable end cap while the other end of the same is arranged outside the circumference of the hollow metal barrel, the hollow metal barrel and the vacuum arc extinguish chamber movable electroconductive rod are in welded sealing, the hollow metal barrel and the corrugated pipe outside sealing device are in direct-acting reciprocating sealing, and the corrugated pipe outside sealing device and the vacuum arc extinguish chamber movable end cap are in fixed gas sealing. By adopting magnetofluid direct-acting reciprocating sealing technology, a closed space can be formed among the inside of the vacuum arc extinguish chamber corrugated pipe, the lower portion of the vacuum arc extinguish chamber movable end cap and the movable electroconductive rod, and no high-pressure gas exists inside the closed space, so that difference of air pressure inside and outside the corrugated pipe is reduced, and breakage failure probability of the corrugated pipe can be lowered effectively.
Description
Technical field
The invention belongs to vacuum interrupter technical field, be specifically related to operator guards and the application of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure, be applicable to the vacuum arc extinguishing chamber corrugated tube seal protection in Transmission level vacuum switchgear under high air pressure.
Background technology
High-pressure vacuum breaker is switchgear important in electric power system, and because it has, volume is little, structure simple, arc-extinguishing medium advantages of environment protection, has become the focus of research both at home and abroad.At present, in High Voltage Vacuum Circuit Breakers, usually adopt gases at high pressure (as dry air, SF
6, CO
2, N
2deng) as the exterior insulation of vacuum interrupter.Bellows is the motion seal parts between vacuum interrupter and exterior insulation gas.Bellows is welded on the outside of moving conductive rod and the internal orifice of moved end cover plate usually, compression and recovery when vacuum switch carries out divide-shut brake motion, be unique needs significantly reciprocating mechanical deformation parts in vacuum interrupter, usually which determine the mechanical endurance of vacuum interrupter.When the external insulation medium adopting high-pressure gas as vacuum interrupter, because both sides inside and outside bellows exist larger pressure differential, the mechanical fatigue accelerating bellows damages, and may cause vacuum interrupter air leakage failure.
Summary of the invention
In order to overcome above-mentioned prior art Problems existing; the object of the present invention is to provide operator guards and the application of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure; seal protection is carried out to vacuum arc extinguishing chamber corrugated tube under high gas pressure, also can not air leakage failure under high gas pressure after vacuum arc extinguishing chamber corrugated tube is protected.
To achieve these goals, the technical scheme that the present invention takes is:
The operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure, comprise and be arranged on the hollow metallic cylinder 11 that moving conductive rod of vacuum arc extinguish chamber 4 is positioned at the end of movable end of vacuum arc extinguishing chamber lid 6 outside, one end is arranged on movable end of vacuum arc extinguishing chamber lid 6 bottom, the other end is arranged on the bellows outer seal device 9 outside hollow metallic cylinder 11 border, welded seal 8 is adopted between described hollow metallic cylinder 11 and moving conductive rod of vacuum arc extinguish chamber 4, direct acting reciprocating seal 10 is adopted between hollow metallic cylinder 11 and bellows outer seal device 9, stationary gas is adopted to seal 7 between described bellows outer seal device 9 and movable end of vacuum arc extinguishing chamber lid 6.
Described direct acting reciprocating seal 10 comprises the pole shoe 14 be fixed on by non magnetic sealed base 13 on bellows outer seal device 9, is in the magnetic liquid 15 in the gap between pole shoe 14 and hollow metallic cylinder 11, the permanent magnet 16 between pole shoe 14; Permanent magnet 16 can form closed magnetic conductive loop in pole shoe 14 and moving conductive rod of vacuum arc extinguish chamber 4, magnetic liquid 15 is limited in the gap between pole shoe 14 and hollow metallic cylinder 11 due to the control being subject to magnetic field, when magnetic liquid 15 is subject to the pressure differential effect of magnet fluid sealing chamber and the generation of external high pressure gas, magnetic liquid 15 can move in magnetic field heterogeneous, at this moment non-uniform magnetic-field will make magnetic liquid 15 create antagonism pressure differential magnetic force so that reach new balance, serve sealing function.
Described welded seal 8 is argon arc welding sealing.
Under a kind of high gas pressure described above, the operator guards of vacuum arc extinguishing chamber corrugated tube is used for porcelain knob vacuum circuit-breaker, lands in can-type vacuum circuit breaker and gas-insulated switchgear GIS and vacuum switchgear.
Compared to the prior art, tool has the following advantages in the present invention:
(1) magnetic fluid direct acting reciprocation sealing technology is adopted can to make to form confined space between vacuum arc extinguishing chamber corrugated tube inside, movable end of vacuum arc extinguishing chamber lid bottom and moving conductive rod, above-mentioned confined space inside does not have the gas of high pressure, thus the draught head inside and outside reduction bellows, effectively can reduce the Fracture Probability of bellows.
(2) adopt argon arc welding to seal between hollow metallic cylinder and moving conductive rod, the impulsive force that the mechanical strength of weld produces when can reach the motion of opposing vacuum circuit-breaker and the requirement that do not loosen, good mechanical property can be ensured; The sealing of argon arc welding simultaneously can reduce the loop resistance of weld, is conducive to the temperature rise reducing weld.
(3) sealing between bellows outer seal device and movable end of arc extinguishing chamber lid adopts stationary gas to seal, and can effectively ensure that sealing place is not leaked gas, and ensure that air pressure in seal cavity is unlikely too high and damage bellows.
Accompanying drawing explanation
Fig. 1 is operator guards schematic diagram of the present invention.
Fig. 2 is operator guards detailed maps of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, be vacuum environment in vacuum interrupter 1, fixed contact 2 is fixedly connected with vacuum interrupter 1, and one end of bellows 5 is welded with moving conductive rod 4, and the other end welds with movable end of vacuum arc extinguishing chamber lid 6.When vacuum circuit-breaker carries out breaking-closing operating, bellows 5 compresses or restores, and serves sealing function.Under a kind of high gas pressure of the present invention, the operator guards of vacuum arc extinguishing chamber corrugated tube is fluid direct acting reciprocating seal region 12 shown in dotted lines in Figure 1, comprise and be arranged on the hollow metallic cylinder 11 that moving conductive rod of vacuum arc extinguish chamber 4 is positioned at the end of movable end of vacuum arc extinguishing chamber lid 6 outside, one end is arranged on movable end of vacuum arc extinguishing chamber lid 6 bottom, the other end is arranged on the bellows outer seal device 9 outside hollow metallic cylinder 11 border, welded seal 8 is adopted between described hollow metallic cylinder 11 and moving conductive rod of vacuum arc extinguish chamber 4, make hollow metallic cylinder 11 do rectilinear motion with moving conductive rod of vacuum arc extinguish chamber about 4 and motion state is identical simultaneously.Direct acting reciprocating seal 10 is adopted between hollow metallic cylinder 11 and bellows outer seal device 9, when ensureing relative motion between bellows outer seal device 9 and hollow metallic cylinder 11, the seal clearance of magnet fluid sealing 10 can provide effective sealing all the time, the frictional force of direct acting reciprocating seal 10 is minimum, avoid the mechanical wear between bellows outer seal device 9 and hollow metallic cylinder 11, improve the mechanical endurance of bellows outer seal device 9 and hollow metallic cylinder 11, achieve positiver sealing when moving conductive rod of vacuum arc extinguish chamber 4 carries out oscillating rectilinear motion.Stationary gas is adopted to seal 7 between described bellows outer seal device 9 and movable end of vacuum arc extinguishing chamber lid 6.Sealing is reliable.
As shown in Figure 2, in vacuum interrupter, the outside of bellows 5 is vacuum environment, and be hypobaric in magnet fluid sealing cavity, movable end of vacuum arc extinguishing chamber lid 6 outside is high pressure SF
6gaseous environment.Direct acting reciprocating seal 10 is adopted between hollow metallic cylinder 11 and bellows outer seal device 9, described direct acting reciprocating seal 10 comprises the pole shoe 14 be fixed on by non magnetic sealed base 13 on bellows outer seal device 9, be in the magnetic liquid 15 in the gap between pole shoe 14 and hollow metallic cylinder 11, the permanent magnet 16 between pole shoe 14; Permanent magnet 16 can form closed magnetic conductive loop in pole shoe 14 and moving conductive rod of vacuum arc extinguish chamber 4, as shown in dashed line in figure 2.Magnetic liquid 15 is limited in the gap between pole shoe 14 and hollow metallic cylinder 11 due to the control being subject to magnetic field, when magnetic liquid 15 is subject to the pressure differential effect of magnet fluid sealing chamber and the generation of external high pressure gas, magnetic liquid 15 can move in magnetic field heterogeneous, at this moment non-uniform magnetic-field will make magnetic liquid 15 create antagonism pressure differential magnetic force so that reach new balance, serve sealing function.Adopt in the High Voltage Vacuum Circuit Breakers of magnetic fluid direct acting reciprocating seal, the air pressure in magnet fluid sealing chamber is close with atmospheric pressure, avoids bellows 5 in motion process repeatedly, be subject to the destruction of high-pressure gas and lost efficacy.Meanwhile, the viscous friction of magnetic liquid 15 is little, avoid the mechanical wear between pole shoe 14 and hollow metallic cylinder 11, achieve positiver sealing when moving conductive rod 4 carries out oscillating rectilinear motion, improve mechanical endurance and the Mechanical Reliability of High Voltage Vacuum Circuit Breakers.
As the preferred embodiment of the present invention, described welded seal 8 is argon arc welding sealing.The mechanical strength of argon arc welding sealing is high, and mechanical property is good.
Under a kind of high gas pressure of the present invention, the operator guards of vacuum arc extinguishing chamber corrugated tube can be applied to porcelain knob vacuum circuit-breaker, land in can-type vacuum circuit breaker and gas-insulated switchgear GIS and vacuum switchgear, and the dielectric of its vacuum extinction outdoor can be gas or liquid.
Claims (4)
1. the operator guards of vacuum arc extinguishing chamber corrugated tube under high gas pressure, is characterized in that: comprise and be arranged on the hollow metallic cylinder (11) that moving conductive rod of vacuum arc extinguish chamber (4) is positioned at the outside end of movable end of vacuum arc extinguishing chamber lid (6); One end is arranged on movable end of vacuum arc extinguishing chamber lid (6) bottom, the other end is arranged on the bellows outer seal device (9) outside hollow metallic cylinder (11) border, welded seal (8) is adopted between described hollow metallic cylinder (11) and moving conductive rod of vacuum arc extinguish chamber (4), adopt direct acting reciprocating seal (10) between hollow metallic cylinder (11) and bellows outer seal device (9), between described bellows outer seal device (9) and movable end of vacuum arc extinguishing chamber lid (6), adopt stationary gas to seal (7).
2. the operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure according to claim 1, it is characterized in that: described direct acting reciprocating seal (10) comprises the pole shoe (14) be fixed on by non magnetic sealed base (13) on bellows outer seal device (9), be in the magnetic liquid (15) in the gap between pole shoe (14) and hollow metallic cylinder (11), be positioned at the permanent magnet (16) between pole shoe (14), permanent magnet (16) can form closed magnetic conductive loop in pole shoe (14) and moving conductive rod of vacuum arc extinguish chamber (4), magnetic liquid (15) is limited in the gap between pole shoe (14) and hollow metallic cylinder (11) due to the control being subject to magnetic field, when magnetic liquid (15) is subject to the pressure differential effect of magnet fluid sealing chamber and the generation of external high pressure gas, magnetic liquid (15) can move in magnetic field heterogeneous, at this moment non-uniform magnetic-field will make magnetic liquid (15) create antagonism pressure differential magnetic force so that reach new balance, serve sealing function.
3. the operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure according to claim 1, is characterized in that: described welded seal (8) is argon arc welding sealing.
4. under a kind of high gas pressure described in claim 1, the operator guards of vacuum arc extinguishing chamber corrugated tube is used for porcelain knob vacuum circuit-breaker, lands in can-type vacuum circuit breaker and gas-insulated switchgear GIS and vacuum switchgear, and described porcelain knob vacuum circuit-breaker, the dielectric of vacuum extinction outdoor landed in can-type vacuum circuit breaker and gas-insulated switchgear GIS and vacuum switchgear are gas or liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224387.3A CN104810195B (en) | 2015-05-05 | 2015-05-05 | The operator guards of vacuum arc extinguishing chamber corrugated tube and application under a kind of high gas pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224387.3A CN104810195B (en) | 2015-05-05 | 2015-05-05 | The operator guards of vacuum arc extinguishing chamber corrugated tube and application under a kind of high gas pressure |
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| Publication Number | Publication Date |
|---|---|
| CN104810195A true CN104810195A (en) | 2015-07-29 |
| CN104810195B CN104810195B (en) | 2015-12-30 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016219791A1 (en) * | 2016-10-12 | 2018-04-12 | Siemens Aktiengesellschaft | Vacuum switch with a magnetic fluid seal |
| CN110911192A (en) * | 2019-12-18 | 2020-03-24 | 柏仕海 | Electric power grading arc extinguishing device based on Bernoulli principle |
| CN111649905A (en) * | 2020-06-16 | 2020-09-11 | 湖北三江航天红阳机电有限公司 | Protection device of vacuum bellows |
| CN111837304A (en) * | 2018-03-14 | 2020-10-27 | 三菱电机株式会社 | Gas insulated switchgear |
| CN112053897A (en) * | 2020-09-17 | 2020-12-08 | 安徽普众机电有限公司 | Layered high-voltage vacuum switch tube |
| CN112366113A (en) * | 2020-11-02 | 2021-02-12 | 西安交通大学 | Protection structure of vacuum arc-extinguishing chamber corrugated pipe under high gas pressure and working method |
| CN112442672A (en) * | 2019-08-30 | 2021-03-05 | 佳能特机株式会社 | Vacuum device |
| CN113035635A (en) * | 2020-12-18 | 2021-06-25 | 国网宁夏电力有限公司电力科学研究院 | Bellows protection air chamber |
| CN113257614A (en) * | 2021-04-25 | 2021-08-13 | 西安交通大学 | Vacuum arc-extinguishing chamber capable of being used in high-pressure environment |
| CN114334529A (en) * | 2020-10-09 | 2022-04-12 | 西安西电高压开关有限责任公司 | Vacuum arc-extinguishing chamber and vacuum switch |
| CN116837339A (en) * | 2023-09-01 | 2023-10-03 | 无锡尚积半导体科技有限公司 | Bell plate device and magnetron sputtering equipment |
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| JP2014035842A (en) * | 2012-08-07 | 2014-02-24 | Toshiba Corp | Resin-molded vacuum valve |
| CN204596701U (en) * | 2015-05-05 | 2015-08-26 | 西安交通大学 | The operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure |
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2015
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Patent Citations (6)
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| US4618749A (en) * | 1984-09-24 | 1986-10-21 | Veb Otto Buchwitz Starkstrom Anlagebau Dresden | Solid insulator-type vacuum switch gear |
| DE3718108A1 (en) * | 1987-05-27 | 1988-12-08 | Slamecka Ernst | Vacuum switch |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016219791A1 (en) * | 2016-10-12 | 2018-04-12 | Siemens Aktiengesellschaft | Vacuum switch with a magnetic fluid seal |
| CN111837304B (en) * | 2018-03-14 | 2021-12-31 | 三菱电机株式会社 | Gas insulated switchgear |
| CN111837304A (en) * | 2018-03-14 | 2020-10-27 | 三菱电机株式会社 | Gas insulated switchgear |
| CN112442672B (en) * | 2019-08-30 | 2023-09-22 | 佳能特机株式会社 | Vacuum device |
| CN112442672A (en) * | 2019-08-30 | 2021-03-05 | 佳能特机株式会社 | Vacuum device |
| CN110911192A (en) * | 2019-12-18 | 2020-03-24 | 柏仕海 | Electric power grading arc extinguishing device based on Bernoulli principle |
| CN111649905A (en) * | 2020-06-16 | 2020-09-11 | 湖北三江航天红阳机电有限公司 | Protection device of vacuum bellows |
| CN112053897A (en) * | 2020-09-17 | 2020-12-08 | 安徽普众机电有限公司 | Layered high-voltage vacuum switch tube |
| CN112053897B (en) * | 2020-09-17 | 2022-10-04 | 安徽普众机电有限公司 | Layered high-voltage vacuum switch tube |
| CN114334529A (en) * | 2020-10-09 | 2022-04-12 | 西安西电高压开关有限责任公司 | Vacuum arc-extinguishing chamber and vacuum switch |
| CN114334529B (en) * | 2020-10-09 | 2023-11-10 | 西安西电高压开关有限责任公司 | Vacuum arc-extinguishing chamber and vacuum switch |
| CN112366113A (en) * | 2020-11-02 | 2021-02-12 | 西安交通大学 | Protection structure of vacuum arc-extinguishing chamber corrugated pipe under high gas pressure and working method |
| CN113035635A (en) * | 2020-12-18 | 2021-06-25 | 国网宁夏电力有限公司电力科学研究院 | Bellows protection air chamber |
| CN113257614A (en) * | 2021-04-25 | 2021-08-13 | 西安交通大学 | Vacuum arc-extinguishing chamber capable of being used in high-pressure environment |
| CN116837339A (en) * | 2023-09-01 | 2023-10-03 | 无锡尚积半导体科技有限公司 | Bell plate device and magnetron sputtering equipment |
| CN116837339B (en) * | 2023-09-01 | 2023-11-28 | 无锡尚积半导体科技有限公司 | Bell plate device and magnetron sputtering equipment |
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