CN204596701U - The operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure - Google Patents
The operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure Download PDFInfo
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- CN204596701U CN204596701U CN201520284177.9U CN201520284177U CN204596701U CN 204596701 U CN204596701 U CN 204596701U CN 201520284177 U CN201520284177 U CN 201520284177U CN 204596701 U CN204596701 U CN 204596701U
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- vacuum arc
- arc extinguishing
- extinguishing chamber
- metallic cylinder
- hollow metallic
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Abstract
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 that moving conductive rod of vacuum arc extinguish chamber is positioned at the end of movable end of vacuum arc extinguishing chamber lid outside, one end is arranged on movable end of vacuum arc extinguishing chamber lid bottom, the other end is arranged on the bellows outer seal device outside hollow metallic cylinder border, welded seal is adopted between described hollow metallic cylinder and moving conductive rod of vacuum arc extinguish chamber, direct acting reciprocating seal is adopted between hollow metallic cylinder and bellows outer seal device, stationary gas is adopted to seal between described bellows outer seal device and movable end of vacuum arc extinguishing chamber lid, the utility model adopts magnetic fluid direct acting reciprocation sealing technology can 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.
Description
Technical field
The utility model belongs to vacuum interrupter technical field, is specifically related to the operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure, is 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 purpose of this utility model is to provide the operator guards 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 utility model is taked 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.
Compared to the prior art, tool has the following advantages the utility model:
(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 the utility model operator guards schematic diagram.
Fig. 2 is the utility model operator guards detailed maps.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model 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 utility model, 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 preferred implementation of the present utility model, 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 described in the utility model, 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 (3)
1. the operator guards of vacuum arc extinguishing chamber corrugated tube under a high gas pressure, it 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), 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).
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520284177.9U CN204596701U (en) | 2015-05-05 | 2015-05-05 | The operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520284177.9U CN204596701U (en) | 2015-05-05 | 2015-05-05 | The operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204596701U true CN204596701U (en) | 2015-08-26 |
Family
ID=53932828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520284177.9U Withdrawn - After Issue CN204596701U (en) | 2015-05-05 | 2015-05-05 | The operator guards of vacuum arc extinguishing chamber corrugated tube under a kind of high gas pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204596701U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810195A (en) * | 2015-05-05 | 2015-07-29 | 西安交通大学 | Protecting structure for vacuum air extinguish chamber corrugated pipe under high gas pressure and application |
| CN106876210A (en) * | 2015-12-11 | 2017-06-20 | Abb瑞士股份有限公司 | For the medium voltage breaker used in high-pressure environment |
| CN110911192A (en) * | 2019-12-18 | 2020-03-24 | 柏仕海 | Electric power grading arc extinguishing device based on Bernoulli principle |
-
2015
- 2015-05-05 CN CN201520284177.9U patent/CN204596701U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810195A (en) * | 2015-05-05 | 2015-07-29 | 西安交通大学 | Protecting structure for vacuum air extinguish chamber corrugated pipe under high gas pressure and application |
| CN104810195B (en) * | 2015-05-05 | 2015-12-30 | 西安交通大学 | The operator guards of vacuum arc extinguishing chamber corrugated tube and application under a kind of high gas pressure |
| CN106876210A (en) * | 2015-12-11 | 2017-06-20 | Abb瑞士股份有限公司 | For the medium voltage breaker used in high-pressure environment |
| CN110911192A (en) * | 2019-12-18 | 2020-03-24 | 柏仕海 | Electric power grading arc extinguishing device based on Bernoulli principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |