CN109599295A - A kind of vacuum interrupter with oily buffer-type bellows - Google Patents
A kind of vacuum interrupter with oily buffer-type bellows Download PDFInfo
- Publication number
- CN109599295A CN109599295A CN201811514582.XA CN201811514582A CN109599295A CN 109599295 A CN109599295 A CN 109599295A CN 201811514582 A CN201811514582 A CN 201811514582A CN 109599295 A CN109599295 A CN 109599295A
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- China
- Prior art keywords
- bellows
- vacuum interrupter
- conductive rod
- tube cavity
- connect
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Classifications
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- 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
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
A kind of vacuum interrupter with oily buffer-type bellows provided by the present application, including arc extinguishing chamber enclosure, static conductive rod, moving conductive rod, static contact, moving contact, bellows, external oil pocket and petroleum pipeline, the bellows includes ripple tube cavity, filled with oily buffer in the ripple tube cavity；In this way, oily buffer is filled with into ripple tube cavity through oilhole valve by external oil pocket, petroleum pipeline, when breaker carries out on/off switch operation, bellows receives telescopic action, the damping buffering effect of oily buffer can buffer the flexible of bellows, and then slow down the damaged degree in telescopic process, improve the service life and fatigue resistance of bellows；In addition, vacuum interrupter is after the big short circuit current of disjunction, the waste heat of conducting rod is transferred on bellows, and oily buffer can slow down the raised speed of bellows temperature, further increases the service life and fatigue resistance of bellows.
Description
Technical field
This application involves vacuum interrupter technical field more particularly to a kind of vacuum extinctions with oily buffer-type bellows
Room.
Background technique
Vacuum interrupter is the critical component of mesohigh power switch, passes through the excellent insulating properties of vacuum in vacuum extinction room
Make after mesohigh circuitry cuts power supply blow-out and to inhibit electric current rapidly, avoid accident and unexpected occurs.Vacuum interrupter
It is mainly used in transmission & distribution electric control system, has the characteristics that fire prevention, explosion-proof, small in size, the service life is long, maintenance cost is low.
The operating mechanism electric parts that vacuum circuit breaker uses at present is more, and breakage once occurs for these electric parts, then
Obstacle may all occur for entire operating mechanism；In the component part of vacuum interrupter, static conductive rod be it is stationary, and it is outer
It is also sealing between shell；And moving conductive rod needs to do on/off switch movement, sealing between shell need to be by having
The bellows of retractility, but since bellows belongs to metal alloy parts, the bellows by frequent Compression and Expansion is in interior outer gas
It is possible to will appear disrepair phenomenon under the action of pressure, substantially reduces the service life and fatigue resistance of bellows；Make simultaneously
Vacuum degree decline in arc-chutes is obtained, more serious person may make the breaker beginning fail, and then cause damages to power grid,
The service life of bellows and fatigue resistance are also related with the heating temperature of operating condition simultaneously, vacuum interrupter
After being segmented big short circuit current, the waste heat of conducting rod is transmitted on bellows, increases the temperature of bellows, when temperature rise reaches
When to a certain degree, the service life and fatigue resistance of bellows are reduced.
Summary of the invention
This application provides a kind of vacuum interrupters with oily buffer-type bellows, to solve breaker on/off switch process
Summarize bellows service life and the technical issues of fatigue resistance substantially reduces.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
A kind of vacuum interrupter with oily buffer-type bellows provided by the present application, including arc extinguishing chamber enclosure, quiet conduction
Bar, moving conductive rod, bellows, external oil pocket and petroleum pipeline, in which:
The static conductive rod is connect with static contact；
One end of the moving conductive rod is connect with moving contact, and the other end fixing sleeve of the moving conductive rod is equipped with the ripple
Pipe；
The bottom end of the arc extinguishing chamber enclosure is connect with the bellows；
The bellows includes ripple tube cavity, filled with oily buffer in the ripple tube cavity；
The bottom end of the bellows offers the oilhole valve being connected with the ripple tube cavity；
One end of the petroleum pipeline is connect with the oilhole valve, and the other end is connect with the external oil pocket.
Preferably, the vacuum interrupter further includes metallic shield, the metallic shield and the arc extinguishing chamber enclosure
It connects and shielding is provide with the static contact and the moving contact.
Preferably, the bellows be enhanced bellows, the enhanced bellows include PVC enhancing bellows or
HDPE enhances bellows.
Preferably, the vacuum interrupter further includes terminals, and the terminals are set to the upper end of the static conductive rod.
Preferably, the static contact is oppositely arranged with the moving contact.
Compared with prior art, the application has the beneficial effect that
A kind of vacuum interrupter with oily buffer-type bellows provided by the present application, including arc extinguishing chamber enclosure, quiet conduction
Bar, moving conductive rod, bellows, external oil pocket and petroleum pipeline, in which: the static conductive rod is connect with static contact；The moving conductive
One end of bar is connect with moving contact, and the other end fixing sleeve of the moving conductive rod is equipped with the bellows；The arc extinguishing chamber enclosure
Bottom end connect with the bellows；The bellows includes ripple tube cavity, filled with oily buffer in the ripple tube cavity；
The bottom end of the bellows offers the oilhole valve being connected with the ripple tube cavity；One end of the petroleum pipeline with it is described
The connection of oilhole valve, the other end are connect with the external oil pocket.In this way, by external oil pocket, petroleum pipeline through oilhole valve to wave
Oily buffer is filled in line tube cavity, when breaker carries out on/off switch operation, bellows by telescopic action, oily buffer
Damping buffering effect can buffer the flexible of bellows, and then slow down the damaged degree in telescopic process, improve making for bellows
With service life and fatigue resistance；In bellows telescopic process, the oily buffer in ripple tube cavity enters outside through petroleum pipeline
In oil pocket；At the end of circuit-breaker switching on-off operation, since liquid level causes to exist between external oil pocket and ripple tube cavity
Pressure difference, oily buffer under the action of pressure difference in external oil pocket enter ripple tube cavity by petroleum pipeline by external oil pocket
In, oily buffer recycles repeatedly in external oil pocket and ripple tube cavity；In addition, the short circuit that vacuum interrupter is big in disjunction
After electric current, the waste heat of conducting rod is transferred on bellows, and oily buffer can slow down the raised speed of bellows temperature, further
Improve the service life and fatigue resistance of bellows.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of structural schematic diagram of the vacuum interrupter with oily buffer-type bellows provided by the present application.
Description of symbols: 1- static conductive rod, 2- moving conductive rod, 3- static contact, 4- moving contact, 5- arc extinguishing chamber enclosure, 6-
Metallic shield, 7- bellows, 8- terminals, 9- oilhole valve, 10- ripple tube cavity, the outside 11- oil pocket, 12- petroleum pipeline.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field
The application protection all should belong in art personnel every other embodiment obtained without making creative work
Range.
A kind of vacuum interrupter with oily buffer-type bellows provided by the present application, including arc extinguishing chamber enclosure 5, quiet conduction
Bar 1, moving conductive rod 2, bellows 7, external oil pocket 11 and petroleum pipeline 12, specific structure refer to Fig. 1, and Fig. 1 is provided by the present application
A kind of structural schematic diagram of the vacuum interrupter with oily buffer-type bellows；Wherein:
The static conductive rod 1 is connect with static contact 3；
One end of the moving conductive rod 2 is connect with moving contact 4, and the other end fixing sleeve of the moving conductive rod 2 is equipped with described
Bellows 7；
The bottom end of the arc extinguishing chamber enclosure 5 is connect with the bellows 7；
Static conductive rod 1, moving conductive rod 2, static contact 3, moving contact 4 constitute the conducting system of vacuum interrupter；Work as vacuum
When breaker closing, operating mechanism makes to be closed between static contact 3 and moving contact 4 by the movement of moving conductive rod 2, completes connecing for circuit
It is logical；When vacuum switch breaking current, the static contact 3 and moving contact 4 of vacuum interrupter separate and generate electric arc therebetween, until
Arc extinction when electric current natural zero-crossing completes cut-offfing for circuit.
Bellows 7 can not only keep apart the vacuum state of vacuum extinction chamber interior and external atmospheric condition, and
Moving contact 4 can be made to move within the limits prescribed together with moving conductive rod 2, to complete the closure and breaking operation of vacuum circuit breaker.
The bellows 7 includes ripple tube cavity 10, and the ripple tube cavity is interior filled with oily buffer；The bellows 7
Bottom end offer the oilhole valve 9 being connected with the ripple tube cavity 10；One end of the petroleum pipeline 12 and the oilhole
Valve 9 connects, and the other end is connect with the external oil pocket 11.
It is filled with oily buffer into ripple tube cavity 10 through oilhole valve 9 by external oil pocket 11, petroleum pipeline 12, works as open circuit
When device carries out on/off switch operation, bellows 7 can be buffered bellows 7 by telescopic action, the damping buffering effect of oily buffer
It is flexible, and then slow down the damaged degree in telescopic process, improve the service life and fatigue resistance of bellows 7；In ripple
In 7 telescopic process of pipe, the oily buffer in ripple tube cavity 10 enters in external oil pocket 11 through petroleum pipeline 12；When breaker division
At the end of lock operates, since high voltage intensity leads between external oil pocket 11 and ripple tube cavity 10 that there are pressure differences, in pressure difference
Under the action of oily buffer in external oil pocket 11 entered in ripple tube cavity 10 by external oil pocket 11 by petroleum pipeline 12, oil is slow
Fliud flushing recycles repeatedly in external oil pocket 11 and ripple tube cavity 10；In addition, the short circuit electricity that vacuum interrupter is big in disjunction
After stream, bellows fever will lead to, oily buffer can slow down the raised speed of 7 temperature of bellows, further increase bellows 7
Service life and fatigue resistance.
The vacuum interrupter further includes metallic shield 6, and the metallic shield 6 is connect with the arc extinguishing chamber enclosure 5
And shielding is provide with the static contact 3 and the moving contact 4；The static contact 3 is oppositely arranged with the moving contact 4；Metallic shield
Cover 6 and other parts composition vacuum interrupter shielding harness, metallic shield 6 can effectively prevent the static contact 3 with it is described
Moving contact 4 it is exposed, to avoid the accidents such as power failure caused by phase fault caused by vacuum interrupter or ground connection；Gold simultaneously
Belonging to shielding case 6 can prevent contact from generating a large amount of metallic vapour and droplets during arcing, pollute insulation crust
Inside avoids the dielectric strength decline of vacuum extinction chamber enclosure；Vacuum interrupter is with the stationary contact for being sealed in vacuum
First 3 realize the connection of power circuit and a kind of electron tube of breaking function with the moving contact 4；When it disconnects a fixed number
When the electric current of value, the static contact 3 is with the moving contact 4 in the certain point that isolated moment, current constriction to contact have just separated
Or in certain several points, performance electrode piece resistance acutely increases and temperature improves rapidly, until the evaporation of electrode metal occurs, while shape
At high electric field strength, lead to the breakdown of violent field emission and gap, produce vacuum arc, when operating current is close
When zero, while the increase of the static contact 3 and 4 spacing of moving contact, the plasma of vacuum arc are spread around quickly,
After arc current zero passage, the static contact 3 and the medium in 4 gap of moving contact have electric conductor to become insulator, and electric current is divided
It is disconnected, cut-off end.
The bellows 7 is enhanced bellows, and the enhanced bellows includes PVC (polyvinyl chloride) enhancing bellows
Or HDPE (high density polyethylene (HDPE)) enhances bellows.During vacuum circuit breaker division, bellows 7 is by telescopic action, wave
By stress on 7 section of line pipe, so the service life of bellows 7 is by stroke repeatedly and uses pressure influence；In order to make ripple
The stability of pipe 7 is stronger, the service life is longer, and the application bellows 7 uses enhanced bellows, specifically can be PVC increasing
Strong bellows or HDPE enhance bellows, naturally it is also possible to the enhanced bellows for selecting other more excellent materials, as reinforcement enhances
Type bellows.Since HDPE molecule does not have polarity, so chemical stability is fabulous, in addition to a small number of strong oxidizers, most ofization
It learns medium and destruction is not risen to it；HDPE molecule long service life, under the conditions of not by UV sunlight, the enhancing wave of HDPE
The service life of line pipe was up to 50 years or more；And HDPE molecule has excellent wear-resisting property, wear-resisting property even compares steel pipe
Taller several times, good wear-resisting property can slow down the repeatedly flexible influence that bellows 7 is subject to.PVC molecule equally has
Good toughness and wearability, make that the stability of bellows 7 is stronger, the service life is longer.
The vacuum interrupter further includes terminals 8, and the terminals 8 are set to the upper end of the static conductive rod 1；Terminals
8 with the component except vacuum interrupter for connecting.
Since embodiment of above is that reference combination is illustrated on other modes, have between different embodiments
There is identical part, identical, similar part may refer to each other between each embodiment in this specification.Herein no longer in detail
It illustrates.
Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here
His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right
The content asked is pointed out.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (5)
1. a kind of vacuum interrupter with oily buffer-type bellows, which is characterized in that including arc extinguishing chamber enclosure (5), quiet conduction
Bar (1), moving conductive rod (2), bellows (7), external oil pocket (11) and petroleum pipeline (12), in which:
The static conductive rod (1) connect with static contact (3)；
One end of the moving conductive rod (2) is connect with moving contact (4), and the other end fixing sleeve of the moving conductive rod (2) is equipped with institute
State bellows (7)；
The bottom end of the arc extinguishing chamber enclosure (5) is connect with the bellows (7)；
The bellows (7) includes ripple tube cavity (10), and the ripple tube cavity is interior filled with oily buffer；
The bottom end of the bellows (7) offers the oilhole valve (9) being connected with the ripple tube cavity (10)；
One end of the petroleum pipeline (12) is connect with the oilhole valve (9), and the other end is connect with the external oil pocket (11).
2. vacuum interrupter according to claim 1, which is characterized in that the vacuum interrupter further includes metallic shield
(6), the metallic shield (6), which connect and shields with the arc extinguishing chamber enclosure (5), is provide with the static contact (3) and the dynamic touching
Head (4).
3. vacuum interrupter according to claim 1, which is characterized in that the bellows (7) is enhanced bellows, institute
Stating enhanced bellows includes PVC enhancing bellows or HDPE enhancing bellows.
4. vacuum interrupter according to claim 1, which is characterized in that the vacuum interrupter further includes terminals (8),
The terminals (8) are set to the upper end of the static conductive rod (1).
5. vacuum interrupter according to claim 1, which is characterized in that the static contact (3) and the moving contact (4) phase
To setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811514582.XA CN109599295A (en) | 2018-12-12 | 2018-12-12 | A kind of vacuum interrupter with oily buffer-type bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811514582.XA CN109599295A (en) | 2018-12-12 | 2018-12-12 | A kind of vacuum interrupter with oily buffer-type bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109599295A true CN109599295A (en) | 2019-04-09 |
Family
ID=65961701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811514582.XA Pending CN109599295A (en) | 2018-12-12 | 2018-12-12 | A kind of vacuum interrupter with oily buffer-type bellows |
Country Status (1)
| Country | Link |
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| CN (1) | CN109599295A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012979A (en) * | 2021-03-01 | 2021-06-22 | 云南电网有限责任公司电力科学研究院 | Vacuum arc-extinguishing chamber triggered by ultraviolet rays |
| CN113793767A (en) * | 2021-08-25 | 2021-12-14 | 陕西斯瑞新材料股份有限公司 | Preparation method of high-mechanical-strength composite conducting rod for vacuum arc-extinguishing chamber |
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| CN103308446A (en) * | 2013-05-31 | 2013-09-18 | 重庆大学 | Fluid compressibility test device based on corrugated pipes |
| CN204375645U (en) * | 2015-02-05 | 2015-06-03 | 浙江安光电气科技有限公司 | Novel vacuum interrupter |
| CN106496660A (en) * | 2016-10-19 | 2017-03-15 | 安徽杰蓝特新材料有限公司 | A kind of high ring rigidity PE double-wall corrugated pipe bellmouth structures |
| CN208203698U (en) * | 2018-05-09 | 2018-12-07 | 中山市智泰机电科技有限公司 | A kind of highly reliable cushion cylinder |
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2018
- 2018-12-12 CN CN201811514582.XA patent/CN109599295A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308446A (en) * | 2013-05-31 | 2013-09-18 | 重庆大学 | Fluid compressibility test device based on corrugated pipes |
| CN204375645U (en) * | 2015-02-05 | 2015-06-03 | 浙江安光电气科技有限公司 | Novel vacuum interrupter |
| CN106496660A (en) * | 2016-10-19 | 2017-03-15 | 安徽杰蓝特新材料有限公司 | A kind of high ring rigidity PE double-wall corrugated pipe bellmouth structures |
| CN208203698U (en) * | 2018-05-09 | 2018-12-07 | 中山市智泰机电科技有限公司 | A kind of highly reliable cushion cylinder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012979A (en) * | 2021-03-01 | 2021-06-22 | 云南电网有限责任公司电力科学研究院 | Vacuum arc-extinguishing chamber triggered by ultraviolet rays |
| CN113793767A (en) * | 2021-08-25 | 2021-12-14 | 陕西斯瑞新材料股份有限公司 | Preparation method of high-mechanical-strength composite conducting rod for vacuum arc-extinguishing chamber |
| CN113793767B (en) * | 2021-08-25 | 2023-08-29 | 陕西斯瑞新材料股份有限公司 | Preparation method of high-mechanical-strength composite conducting rod for vacuum arc extinguishing chamber |
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Application publication date: 20190409 |