CN2529068Y - Bellow expansion joint with permanent double sealed - Google Patents
Bellow expansion joint with permanent double sealed Download PDFInfo
- Publication number
- CN2529068Y CN2529068Y CN 01254710 CN01254710U CN2529068Y CN 2529068 Y CN2529068 Y CN 2529068Y CN 01254710 CN01254710 CN 01254710 CN 01254710 U CN01254710 U CN 01254710U CN 2529068 Y CN2529068 Y CN 2529068Y
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- CN
- China
- Prior art keywords
- steel pipe
- ring
- bellows
- expansion joint
- filler
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- Expired - Fee Related
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Abstract
The utility model relates to a permanent type double-sealing bellows expansion joint, particularly a bellows expansion joint having the double-leak-proof function. The utility model comprises a bellows (3) which is fixedly connected with an upstream steel pipe and a downstream steep pipe (1, 13), a flow guide cylinder (2) which is fixedly connected with the inner wall of the upstream steel pipe (1), and an outer sleeve assembly (4) which is fixedly connected with the outer wall of the upstream steel pipe (1). The structure of the utility model is characterized in that the inner wall of the outer sleeve assembly (4) is also fixedly connected with a filler baffle ring (6) and a compressing seat ring (9). The upper edge of the compressing seat ring (9) is fixedly connected with more than eight nuts (10) in a uniformly distributing way in a circumferential direction. Fillers (7) and a press ring (8) are sequentially arranged in a gap between the filler baffle ring (6) and the compressing seat ring (9). Compressing bolts (11) are matched with the insides of the nuts (10). The utility model has two sealing barriers which enable the safe reliability of leakage to be greatly improved; moreover, the utility model which has simple structure and reasonable design is particularly suitable for use places having a high operating safety requirement.
Description
Technical field
The utility model relates to compensation protective gear one bellows expansion joint of hydrodynamic pressure pipeline, specifically is meant the bellows expansion joint of the dual anti-leak of a kind of energy.
Background technique
Bellows expansion joint claims " corrugated expansion joint " or " Bellows expansion joint " again, is to be used to solve the problem that easily causes damage when pipeline is subjected to temperature variation or geology variation generation displacement.Adopt expansion joint that pipeline is compensated protection, can make pipeline avoid the damage that causes because of above-mentioned reason.Therefore use very general in every profession and trade.
Existing bellows expansion joint is by the upstream and downstream steel pipe, and bellows that connects in the middle of the steel pipe and guide shell composition.Leak if damaging appears in the joint of bellows itself or bellows and steel pipe, whole expansion joint lapses.Though the bellows expansion joint that has outside is provided with outer jointing jacket; but the effect of protecting jacket mainly is to prevent that external impacts from directly causing damage to bellows; damage for bellows itself or bellows and the appearance of steel pipe joint is leaked, and outer jointing jacket can not be brought into play the effect of leaking that stops.
Summary of the invention
The purpose of this utility model is: design the bellows expansion joint of the dual anti-leak of a kind of energy, when damaging appearred in the joint of bellows itself or bellows and steel pipe, this expansion joint can not leak yet.
In order to achieve the above object; the utility model is performed such: on existing normal tape outer jointing jacket bellows expansion joint architecture basics; increase additional packing seal structure; should additional packing seal structure can set up the second road sealing barrier to bellows expansion joint; reach the purpose that stops fluid to leak, thereby still can normally work effectively when in a single day bellows as the sealing of expansion joint first road is damaged.
Concrete structure is as follows: the utility model comprises upstream and downstream steel pipe, guide shell, bellows, outer sleeve assembly, limited ring, position limit socket.The bellows two ends are affixed with upstream steel pipe and downstream steel pipe respectively.One end of guide shell and the inwall of upstream steel pipe are affixed.The upstream outer wall of steel pipe is connected with the outer sleeve assembly.That end of the nearly bellows of downstream outer wall of steel pipe is connected with limited ring, and the downstream outer wall of steel pipe is uniformly distributed along the circumference away from that end of bellows and is connected with 4-16 position limit socket.Its structure outline is: the nearly downstream of the inwall of outer sleeve assembly steel pipe end is connected with the filler baffle ring successively and compresses seat ring, compresses the uniform respectively 8-80 of being connected with the nut of seat ring upper edge circumferencial direction, is furnished with hold-down bolt in the nut.Anti-loose ring is housed between the nuts and bolt.At the filler baffle ring and compress be equipped with successively in the space between the seat ring prevent to manage in dielectric leakage filler and push down the trim ring of filler, the sectional shape of trim ring can be " H " shape or "T"-shaped.The hold-down bolt of being furnished with in the swivel nut that is used to compress trim ring by the advance and retreat of hold-down bolt, is regulated the tightness that trim ring is pushed down filler, reaches the effect of sealing.
The advantage that the utlity model has is as follows:
1, because the utility model has adopted additional packing seal structure, whole expansion joint has 2 road sealing barriers, the 1st road is sealed into sylphon seal, the 2nd road is sealed into packing seal, therefore the leakage safety reliability of whole expansion joint has improved greatly, is specially adapted to the use occasion that those are had relatively high expectations to security of operation.
2, because the utility model has structurally made full use of the original structure part of normal tape outer jointing jacket bellows expansion joint; the filler baffle ring of additional filler sealing, compress seat ring etc. and also respectively outer sleeve has been played reinforing function, so the utility model is simple in structure, reasonable in design, effect is obvious.
Description of drawings
Accompanying drawing is embodiment of the present utility model, wherein:
Fig. 1 is an A-A longitudinal profile structural representation of the present utility model;
Fig. 2 is a form structure schematic representation of the present utility model;
Embodiment
See also accompanying drawing 1, accompanying drawing 2.The utility model comprises: upstream steel pipe 1, guide shell 2, bellows 3, outer sleeve assembly 4, limited ring 5, filler baffle ring 6, filler 7, trim ring 8, compress seat ring 9, nut 10, hold-down bolt 11, position limit socket 12, downstream steel pipe 13, receiver stiffening plate 14, receiver 15, sleeve body 16, filler baffle ring stiffening plate 17, anti-loose ring 18, compress seat ring stiffening plate 19.The two ends of bellows 3 are affixed with upstream steel pipe 1 and downstream steel pipe 13 respectively.One end of guide shell 2 and the inwall of upstream steel pipe 1 are affixed.Steel pipe 1 outer wall in upstream is connected with outer sleeve assembly 4.Outer sleeve assembly 4 is made up of receiver stiffening plate 14, receiver 15, sleeve body 16.The nearly downstream of the inwall of sleeve body 16 steel pipe 13 ends are connected with filler baffle ring 6 successively and compress seat ring 9.Compressing on the seat ring 9 along the circumferential direction the uniform nut 10 that is connected with.The number of nut 10 is looked the size of bellows expansion joint diameter and is done corresponding increase and decrease, generally at 8-80 only.Compress to be connected with on the seat ring 9 and compress seat ring stiffening plate 19.At filler baffle ring 6 and compress be equipped with in the space between the seat ring 9 prevent to manage in the stuffing box packing 7 and the trim ring 8 of dielectric leakage.Filler 7 adopts long and sealability elastic filling material preferably of life-span usually, and as rubber, hydro-expansive rubber, teflon asbestos packing etc., the sectional shape of filler 7 is circular or square.The sectional shape of trim ring 8 is " H " shapes, also can be for "T"-shaped.Nut 10 is fitted with the hold-down bolt 11 that is used to compress trim ring 8.Anti-loose ring 18 also is housed between nut 10 and the hold-down bolt 11, in use loosening to prevent hold-down bolt 11.That end of the nearly bellows 3 of downstream steel pipe 13 outer walls is connected with the limited ring 5 of restriction bellows 3 axial compression.Steel pipe 13 outer walls in downstream are uniformly distributed along the circumference away from that end of bellows 3 and are connected with the position limit socket 12 that 4-16 only is used to limit bellows 3 axial tensions.
Because the flexible encapsulation boundary that has that the utility model is made up of upstream steel pipe 1, bellows 3 and downstream steel pipe 13 forms the first road wiper seal barrier, the flexible encapsulation boundary of being made up of upstream steel pipe 1, outer sleeve assembly 4, compacted filler 7 and downstream steel pipe 13 that has forms the second road wiper seal barrier, therefore, under normal operating condition, the first road sylphon seal puts into operation, and the second road packing seal is as standby.When abnormal conditions made the first road sylphon seal damage inefficacy, generation leakage, the second road packing seal put into operation automatically, plays the effect that stops escape of liquid.Before operation, must tighten each hold-down bolt 11, make trim ring 8 compress filler 7, filler 7 is close to stay trip steel pipe 13 outer walls and sleeve body 16 inwalls, realize eliminating the gap and prevent the purpose of leaking.On nut 10, be embedded with the anti-loose ring 18 of nylon, when moving, get loose automatically to prevent hold-down bolt 11.
Claims (3)
1. the bellows expansion joint of permanent type double seal comprises upstream steel pipe (1), downstream steel pipe (13), guide shell (2), bellows (3), outer sleeve assembly (4), limited ring (5), position limit socket (12); Bellows (3) two ends are affixed with upstream steel pipe (1) and downstream steel pipe (13) respectively, one end of the inwall of upstream steel pipe (1) and guide shell (2) is affixed, be connected with outer sleeve assembly (4) on upstream steel pipe (1) outer wall, that end of nearly bellows (3) is connected with limited ring (5) on downstream steel pipe (13) outer wall, and downstream steel pipe (13) outer wall is uniformly distributed along the circumference away from that end of bellows (3) and is connected with 4-16 position limit socket (12); It is characterized in that: the nearly downstream of inwall steel pipe (13) end of outer sleeve assembly (4) is connected with filler baffle ring (6) successively and compresses seat ring (9); Compressing the along the circumferential direction uniform respectively 8-80 of being connected with nut (10) on the seat ring (9); At filler baffle ring (6) and compress be equipped with successively in the space between the seat ring (9) prevent to manage in dielectric leakage filler (7) and push down the trim ring (8) of filler (7); Is furnished with hold-down bolt (11) in the nut (10); Between nut (10) and the hold-down bolt (11) anti-loose ring (18) is housed also.
2. the bellows expansion joint of additional filler sealing according to claim 1, it is characterized in that: the sectional shape of described trim ring (8) is " H " shape, also can be for "T"-shaped.
3. the bellows expansion joint of additional filler sealing according to claim 1, it is characterized in that: described filler (7) adopts rubber, hydro-expansive rubber, teflon asbestos packing usually, and sectional shape is circular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254710 CN2529068Y (en) | 2001-11-15 | 2001-11-15 | Bellow expansion joint with permanent double sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254710 CN2529068Y (en) | 2001-11-15 | 2001-11-15 | Bellow expansion joint with permanent double sealed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2529068Y true CN2529068Y (en) | 2003-01-01 |
Family
ID=33663975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01254710 Expired - Fee Related CN2529068Y (en) | 2001-11-15 | 2001-11-15 | Bellow expansion joint with permanent double sealed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2529068Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195507A (en) * | 2016-09-28 | 2016-12-07 | 秦皇岛开发区诺实管业有限公司 | The pipeline compensator that catalyst cracker uses |
| CN108488528A (en) * | 2018-04-25 | 2018-09-04 | 江苏苏亚迪炭材有限公司 | A kind of telescopic compensator for steel flue |
| CN108644521A (en) * | 2018-05-28 | 2018-10-12 | 王惠俊 | High stability corrugated combined compensator |
| CN113833924A (en) * | 2021-10-27 | 2021-12-24 | 南京晨光东螺波纹管有限公司 | Double water seal expansion joint |
-
2001
- 2001-11-15 CN CN 01254710 patent/CN2529068Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195507A (en) * | 2016-09-28 | 2016-12-07 | 秦皇岛开发区诺实管业有限公司 | The pipeline compensator that catalyst cracker uses |
| CN108488528A (en) * | 2018-04-25 | 2018-09-04 | 江苏苏亚迪炭材有限公司 | A kind of telescopic compensator for steel flue |
| CN108644521A (en) * | 2018-05-28 | 2018-10-12 | 王惠俊 | High stability corrugated combined compensator |
| CN113833924A (en) * | 2021-10-27 | 2021-12-24 | 南京晨光东螺波纹管有限公司 | Double water seal expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |