CN201345310Y - Air chamber transmission sealing device of high-voltage circuit breaker and high-voltage circuit breaker with same - Google Patents
Air chamber transmission sealing device of high-voltage circuit breaker and high-voltage circuit breaker with same Download PDFInfo
- Publication number
- CN201345310Y CN201345310Y CNU2008202211524U CN200820221152U CN201345310Y CN 201345310 Y CN201345310 Y CN 201345310Y CN U2008202211524 U CNU2008202211524 U CN U2008202211524U CN 200820221152 U CN200820221152 U CN 200820221152U CN 201345310 Y CN201345310 Y CN 201345310Y
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- CN
- China
- Prior art keywords
- air chamber
- bellows
- end cap
- drive link
- primary cut
- 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.)
- Expired - Lifetime
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- Diaphragms And Bellows (AREA)
Abstract
The utility model discloses an air chamber transmission sealing device of a high-voltage circuit breaker and a high-voltage circuit breaker with same. The air chamber transmission sealing device comprises an end cover, wherein, the end cover is used for hermetically connecting with the wall of the air chamber. An opening for interesting and penetrating a transmission rod is arranged on the end cover; the opening is hermetically connected to a corrugated pipe; and one end of the corrugated pipe which is far from the end cover is hermetically connected with a cover plate for fixedly connecting with the transmission rod. Because the utility model adopts a corrugated pipe welded sealing structure, when the transmission rod telescopically moves, the corrugated pipe can correspondingly deform therewith, and the transmission rod has a certain movement journey to meet the requirements of the divide-shut brake of the high-voltage circuit breaker; because the sealing position is formed in a sealing way, sports fatigue which is caused by long time telescopic movement is reduced, repair frequency and change frequency is greatly reduced, and a lot of money and manpower is saved; and the interval plugbush matched with the transmission rod can avoid the damage to the sealing device for radial micromotion thereof and improve the service life of the sealing device.
Description
Technical field
The utility model relates to a kind of air chamber transmission seal device of primary cut-out, relates to a kind of primary cut-out with this device simultaneously, belongs to the high-voltage switch gear technical field.
Background technology
At high-voltage switch gear industry, SF
6Gas has good arc quenching effect because of it and insulation property are used widely, but utilize this gas must consider to seal to prevent the problem of leaking gas, and because the divide-shut brake of primary cut-out need satisfy certain mechanical movement, therefore give SF
6The sealing of air chamber has increased difficulty.Common SF
6The divide-shut brake transmission mechanism that circuit breaker adopted is: the rotation of rotating shaft drives directly moving the making by drive link of connecting lever and is connected the flexible realization of insulated tension pole divide-shut brake on the connecting lever.For SF
6The sealing means of gas is at rotary seal in the rotating shaft or the translation seal on drive link.At present, what translation seal often used is to adopt O-ring seals to seal on drive link, drive link has small error in the stretching motion process, it is the radially fine motion of drive link, it is tired that this radially fine motion makes sealing ring produce easily, need frequent keeping in repair or changing, cause the gas leakage accident when serious; And in order to improve the effect of sealing, tend to improve the tightness degree between sealing ring and the drive link, so can improve the frictional force of drive link and sealing ring, what increase drive link has brought the transmission resistance, need be lubricated it, smooth degree to drive link outside face has very high requirement simultaneously, makes troubles to breaking-closing operating, has also improved the difficulty of production cost and processing.
The utility model content
The purpose of this utility model provides a kind of primary cut-out air chamber transmission seal device, to improve SF
6The sealing of gas, the transmission resistance of reduction drive link,
In order to realize above purpose, the technical scheme that primary cut-out air chamber transmission seal device of the present utility model is adopted is: a kind of primary cut-out air chamber transmission seal device, this device comprises and is used for the end cap that is tightly connected with air chamber wall, end cap is provided with and is used for the slotting opening of wearing of drive link, be sealedly connected with bellows on this opening, bellows is tightly connected away from an end of end cap and is useful on the cover plate that is connected with drive link.
Described cover plate is for being sleeved on the drive link and being connected with its one or the sealing ring of fixed seal connection, and the excircle of described bellows and sealing ring is tightly connected.
Described end cap by the annular slab of bottom surface be arranged on that an end cap top and an end are connected with the annular slab one or the installation sleeve of fixed seal connection is formed, the inner periphery of described bellows and annular slab is tightly connected.
Described bellows is connected for welded seal with the place of being tightly connected of end cap and cover plate.
Another purpose of the present utility model provides a kind of primary cut-out with this air chamber transmission seal device.
In order to realize above purpose, the technical scheme that primary cut-out of the present utility model adopted is: a kind of primary cut-out, comprise air chamber and be arranged on air chamber transmission seal device on the air chamber wall, air chamber wall is provided with installing hole, this air chamber transmission seal device comprises bellows and the drive link of gap sleeve in bellows that is arranged on the air chamber wall outside, one end of this bellows is connected on the air chamber wall by the end cap seal that is arranged on the air chamber wall inboard, and the other end of bellows is sealedly connected with the cover plate that is connected with drive link.
Described cover plate is for being sleeved on the drive link and being connected with its one or the sealing ring of fixed seal connection, and the excircle of described bellows and sealing ring is tightly connected.
Described end cap by the annular slab of bottom surface be arranged on that an end cap top and an end are connected with the annular slab one or the installation sleeve of fixed seal connection is formed, the other end sealed card of this installation sleeve is contained in the installing hole on the described air chamber wall, and the inner periphery of described bellows and annular slab is tightly connected.
Described bellows is connected for welded seal with the place of being tightly connected of end cap and cover plate, and the sealing place of clamping of the installing hole on described end cap and the air chamber wall clamps for welded seal.
Because the utility model has adopted the hermetically-sealed construction of bellows welding, when the drive link stretching motion, bellows can be out of shape thereupon accordingly, so drive link has certain movement travel, has satisfied the requirement of high-voltage circuit-breaker switching on-off; And the two ends of bellows are welded on respectively on drive link and the air chamber wall, the transmission resistance of having avoided using O-ring seals to bring requires too high problem greatly and to its smooth surface more, do not need to be lubricated yet, saved production cost, and because sealing place is for being welded, reduced because of long stretching motion produces sports fatigue, the frequency that greatly reduces maintenance and change has been saved great amount of manpower and material resources; And because the lateral bending toughness that the gap sleeve of drive link cooperates and bellows itself has, can avoid since its radially fine motion the infringement that sealing device caused has been improved the useful life of sealing device.
Description of drawings
Fig. 1 is the partial sectional view of the utility model air chamber transmission seal device;
Fig. 2 is the utility model air chamber transmission seal Unit Installation schematic diagram.
Embodiment
As shown in Figure 1, 2, air chamber transmission seal device of the present utility model comprises bellows 1, end cap 6 and sealing ring 4, one end welded seal of the neighboring of sealing ring 4 and bellows 1 links together, end cap 6 by the annular slab 2 of bottom surface be arranged on end cap 6 tops and an end and form with the installation sleeve 5 that annular slab 2 one are connected, the other end welded seal of bellows 1 is connected on the madial wall in the suit hole in the middle of the annular slab 2.Primary cut-out deaerating chamber transmission seal device of the present utility model also comprises air chamber and inserts the drive link 3 that is through at air chamber wall 7, air chamber wall 7 is provided with installing hole, one end of drive link 3 is connected with the middle one of sealing ring 4, in the suit hole of the other end gap sleeve of this drive link 3 in the middle of bellows 1 and end cap 6 upper annular plates 2, be respectively applied for transmission mechanism and the insulated tension pole that primary cut-out is installed at the two ends of drive link 3.In assembling during primary cut-out, installation sleeve 5 is installed in the installing hole on the air chamber wall 7, and the place of clamping connects by welded seal.Among the figure 11,12,13 is weld.The left side of air chamber wall is an air ambient among Fig. 2, and the right side is SF
6Gaseous environment, air chamber transmission seal device of the present utility model is when stretching motion, distortion by bellows provides movement travel, drive link cooperates for the gap sleeve with installing hole and suit hole, obtain the bigger radial motion degree of freedom when making the drive link stretching motion, avoided because its radially fine motion and to the infringement of sealing device.Bellows is also with the air in the external world and the SF of inside
6Gas partitions is opened, and welded seal is carried out at its two ends, has prevented the leakage of gas.
Air chamber transmission seal device of the present utility model is not limited to be applied in SF
6On the circuit breaker, there are some vacuum circuit-breakers also to need SF
6The protection of gas, every SF that adopted
6The primary cut-out of Buchholz protection all can adopt air chamber transmission seal device of the present utility model, and every primary cut-out of the utility model air chamber transmission seal device that adopted all falls into protection range of the present utility model.
Claims (8)
1, a kind of primary cut-out air chamber transmission seal device, it is characterized in that: this device comprises and is used for the end cap that is tightly connected with air chamber wall, end cap is provided with and is used for the slotting opening of wearing of drive link, be sealedly connected with bellows on this opening, bellows is tightly connected away from an end of end cap and is useful on the cover plate that is connected with drive link.
2, primary cut-out air chamber transmission seal device according to claim 1, it is characterized in that: described cover plate is for being sleeved on the drive link and being connected with its one or the sealing ring of fixed seal connection, and the excircle of described bellows and sealing ring is tightly connected.
3, primary cut-out air chamber transmission seal device according to claim 1, it is characterized in that: described end cap by the annular slab of bottom surface be arranged on that an end cap top and an end are connected with the annular slab one or the installation sleeve of fixed seal connection is formed, the inner periphery of described bellows and annular slab is tightly connected.
4, according to claim 1 or 2 or 3 described primary cut-out air chamber transmission seal devices, it is characterized in that: described bellows is connected for welded seal with the place of being tightly connected of end cap and cover plate.
5, a kind of primary cut-out, comprise air chamber and be arranged on air chamber transmission seal device on the air chamber wall, air chamber wall is provided with installing hole, it is characterized in that: this air chamber transmission seal device comprises bellows and the drive link of gap sleeve in bellows that is arranged on the air chamber wall outside, one end of this bellows is connected on the air chamber wall by the end cap seal that is arranged on the air chamber wall inboard, and the other end of bellows is sealedly connected with the cover plate that is connected with drive link.
6, primary cut-out according to claim 5 is characterized in that: described cover plate is for being sleeved on the drive link and being connected with its one or the sealing ring of fixed seal connection, and the excircle of described bellows and sealing ring is tightly connected.
7, primary cut-out according to claim 5, it is characterized in that: described end cap by the annular slab of bottom surface be arranged on that an end cap top and an end are connected with the annular slab one or the installation sleeve of fixed seal connection is formed, the other end sealed card of this installation sleeve is contained in the installing hole on the described air chamber wall, and the inner periphery of described bellows and annular slab is tightly connected.
8, according to claim 5 or 6 or 7 described primary cut-outs, it is characterized in that: described bellows is connected for welded seal with the place of being tightly connected of end cap and cover plate, and the sealing place of clamping of the installing hole on described end cap and the air chamber wall clamps for welded seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202211524U CN201345310Y (en) | 2008-11-20 | 2008-11-20 | Air chamber transmission sealing device of high-voltage circuit breaker and high-voltage circuit breaker with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202211524U CN201345310Y (en) | 2008-11-20 | 2008-11-20 | Air chamber transmission sealing device of high-voltage circuit breaker and high-voltage circuit breaker with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345310Y true CN201345310Y (en) | 2009-11-11 |
Family
ID=41276896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202211524U Expired - Lifetime CN201345310Y (en) | 2008-11-20 | 2008-11-20 | Air chamber transmission sealing device of high-voltage circuit breaker and high-voltage circuit breaker with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201345310Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848144A (en) * | 2012-08-29 | 2013-01-02 | 苏州市意可机电有限公司 | Assembly process of sealing connecting rod |
| RU2704964C1 (en) * | 2016-09-01 | 2019-11-01 | Абб Швайц Аг | High-voltage automatic circuit breaker |
-
2008
- 2008-11-20 CN CNU2008202211524U patent/CN201345310Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848144A (en) * | 2012-08-29 | 2013-01-02 | 苏州市意可机电有限公司 | Assembly process of sealing connecting rod |
| CN102848144B (en) * | 2012-08-29 | 2014-07-09 | 苏州市意可机电有限公司 | Assembly process of sealing connecting rod |
| RU2704964C1 (en) * | 2016-09-01 | 2019-11-01 | Абб Швайц Аг | High-voltage automatic circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091111 |
|
| CX01 | Expiry of patent term |