CN203549250U - Bellows expansion joint - Google Patents
Bellows expansion joint Download PDFInfo
- Publication number
- CN203549250U CN203549250U CN201320745472.0U CN201320745472U CN203549250U CN 203549250 U CN203549250 U CN 203549250U CN 201320745472 U CN201320745472 U CN 201320745472U CN 203549250 U CN203549250 U CN 203549250U
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- China
- Prior art keywords
- connecting tube
- bellows
- ring
- connecting pipe
- plate
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Abstract
The utility model provides a bellows expansion joint. The bellows expansion joint comprises a first connecting pipe, a second connecting pipe, a bellows, an outer sheath and a flow guide cylinder. One end of the flow guide cylinder is connected with the inner wall of the first connecting pipe, and the other end of the flow guide cylinder is placed in the second connecting pipe. A fixing ring is further arranged on the outer wall of the second connecting pipe. The bellows is arranged on the outer wall of the second connecting pipe in a sleeved mode, one end of the bellows is connected to one end, close to the first connecting pipe, of the second connecting pipe, and the other end of the bellows is connected with the fixing ring. The first connecting pipe is sleeved with a first annular plate, and the fixing ring is sleeved with a second annular plate. The bellows is sleeved with the outer sheath, one end of the outer sheath is connected to the first annular plate, and the other end of the outer sheath is connected to the second annular plate. The second connecting pipe is further sleeved with a sealing cylinder, and a secondary sealing body is arranged between the sealing cylinder and the second connecting pipe. The second connecting pipe is further sleeved with a sealing ring. Through the arrangement of the sealing body, surface water can be effectively prevented from entering the outer sheath to corrode the bellows, and the service life of the whole device is effectively prolonged.
Description
Technical field
The utility model relates to pipe expansion compensation device, is specifically related to a kind of expansion joint.
Background technique
The length in direct-burried FlexbleJoint bellows element working life is the key of whole corrugated expansion joint length in working life.Because surface water chloride ion-containing exceedes 25ppa, be immersed in for a long time in water, bellows element can be corroded.Current direct-burried FlexbleJoint or there is no sealing configuration, or poorly sealed reality, can not protect bellows to avoid corroding preferably, thereby can not extend preferably the working life of corrugated expansion joint.
Model utility content
The purpose of this utility model is to provide a kind of corrugated expansion joint, solves one or more in above-mentioned prior art problem.
According to an aspect of the present utility model, the corrugated expansion joint providing, comprises the first connecting tube, the second connecting tube, bellows, oversheath and guide shell; One end of guide shell is connected with the inwall of the first connecting tube, and the other end is placed in the second connecting tube; The second connecting tube outer wall is also provided with retainer ring, and fixed trap is located at the second connecting tube outside; Bellows-sheathed is located at the second connecting tube outer wall, and one end of bellows is connected in the second connecting tube one end near the first connecting tube, and the other end of bellows is connected in retainer ring; The first connecting tube outer cover is provided with the first ring flat-plate, and retainer ring outer cover is provided with the second ring flat-plate; Oversheath is sheathed on the outside of bellows, and one end of oversheath is connected in the first ring flat-plate, and the other end is connected in the second ring flat-plate; The second connecting tube outside is also arranged with sealing drum, and one end of sealing drum is connected with the second ring flat-plate; Between sealing drum and the second connecting tube, be provided with time seal; The second connecting tube outside is also arranged with seal ring, and the inner ring of seal ring is connected with the outer wall of the second connecting tube, and the outer ring of seal ring is connected with sealing drum.By this seal is set, effectively avoid surface water to enter oversheath internal corrosion bellows, effectively extended the working life of whole device.
In some embodiments, between the second ring flat-plate and the second connecting tube are away from the end of first connecting tube one end, be also provided with fixed base, on fixed base, offer through hole; The second ring flat-plate is connected with fixed base by fixing rod; One end of fixing rod and the second ring flat-plate are fixed, and the other end is bolted after passing the through hole on fixed base.The second ring flat-plate can be further fixed in this design, can avoid time seal to be given a shock, and can avoid again oversheath to be destroyed, and has further extended the working life of whole device.
Accompanying drawing explanation
Fig. 1 is the generalized section of a kind of mode of execution of the present utility model;
Fig. 2 is the enlarged diagram of A part in Fig. 1.
Embodiment
Below in conjunction with Figure of description, the utility model is described in more detail.
As illustrated in fig. 1 and 2, the corrugated expansion joint that the utility model provides comprises the first connecting tube 1, the second connecting tube 2, bellows 4, oversheath 5 and guide shell 3; MEDIA FLOW is to being to flow to the second connecting tube 2 from the first connecting tube 1.Wherein, the inwall of one end of guide shell 3 and the first connecting tube 1 is welded to connect, and the other end is placed in the second connecting tube 2; The second connecting tube 2 outer walls also weld cover retainer ring 63; Bellows 4 is sheathed on the second connecting tube 2 outer walls, and one end of bellows 4 is connected in the second connecting tube 2 one end near the first connecting tube 1, and the Placement here can be that the end of bellows 4 is directly welded on the second connecting tube 2; The other end of bellows 4 is fixedly welded on retainer ring 63.
The inner ring that the first connecting tube 1 outer cover is provided with the first ring flat-plate 61, the first ring flat-plates 61 is welded on the first connecting tube 1 outside; The inner ring that retainer ring 63 outer cover are provided with the second ring flat-plate 62, the second ring flat-plates 62 is weldingly fixed on retainer ring 63 outsides; Oversheath 5 is sheathed on the outside of bellows 4, and one end of oversheath 5 is fixedly welded on the first ring flat-plate 61, and the other end is fixedly welded on the second ring flat-plate 62; The second connecting tube 2 outsides are also arranged with sealing drum 71, and one end of sealing drum 71 is connected with the second ring flat-plate 62; Between sealing drum 71 and the second connecting tube 2, be filled with time seal 8; The second connecting tube 2 outsides are also arranged with seal ring 72, and the outer wall of the inner ring of seal ring 72 and the second connecting tube 2 is welded to connect, and the outer ring of seal ring 72 and sealing drum 71 are welded to connect.
For improving the degree of stability of oversheath 5, at the second ring flat-plate 62 and the second connecting tube 2, between the end away from first connecting tube 1 one end, be also provided with fixed base 91, fixed base 91 is fixedly welded on the second connecting tube 2 outer walls, on fixed base 91, offers through hole; The second ring flat-plate 62 is connected with fixed base 91 by fixing rod 92; One end of fixing rod 92 and the second ring flat-plate 62 are welded and fixed, and the other end is bolted after passing the through hole on fixed base 91.
More than statement is only optimal way of the present utility model; it should be pointed out that to those skilled in the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, within these also should be considered as protection domain of the present utility model.
Claims (2)
1. corrugated expansion joint, is characterized in that, comprises the first connecting tube (1), the second connecting tube (2), bellows (4), oversheath (5) and guide shell (3); One end of described guide shell (3) is connected with the inwall of described the first connecting tube (1), and the other end is placed in described the second connecting tube (2); Described the second connecting tube (2) outer wall is also provided with retainer ring (63), and described retainer ring (63) is set in described the second connecting tube (2) outside; Described bellows (4) is sheathed on described the second connecting tube (2) outer wall, one end of described bellows (4) is connected in described the second connecting tube (2) one end near described the first connecting tube (1), and the other end of described bellows (4) is connected in described retainer ring (63); Described the first connecting tube (1) outer cover is provided with the first ring flat-plate (61), and described retainer ring (63) outer cover is provided with the second ring flat-plate (62); Described oversheath (5) is sheathed on the outside of described bellows (4), and one end of described oversheath (5) is connected in described the first ring flat-plate (61), and the other end is connected in described the second ring flat-plate (62); Described the second connecting tube (2) outside is also arranged with sealing drum (71), and one end of described sealing drum (71) is connected with described the second ring flat-plate (62); Between described sealing drum (71) and described the second connecting tube (2), be provided with time seal (8); Described the second connecting tube (2) outside is also arranged with seal ring (72), and the inner ring of described seal ring (72) is connected with the outer wall of described the second connecting tube (2), and the outer ring of described seal ring (72) is connected with described sealing drum (71).
2. corrugated expansion joint according to claim 1, it is characterized in that, at described the second ring flat-plate (62) and described the second connecting tube (2), between the end away from described the first connecting tube (1) one end, be also provided with fixed base (91), described fixed base offers through hole on (91); Described the second ring flat-plate (62) is connected with described fixed base (91) by fixing rod (92); One end of described fixing rod (92) and described the second ring flat-plate (62) are fixing, and the other end is bolted after passing the through hole on described fixed base (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745472.0U CN203549250U (en) | 2013-11-21 | 2013-11-21 | Bellows expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745472.0U CN203549250U (en) | 2013-11-21 | 2013-11-21 | Bellows expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203549250U true CN203549250U (en) | 2014-04-16 |
Family
ID=50467366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320745472.0U Expired - Fee Related CN203549250U (en) | 2013-11-21 | 2013-11-21 | Bellows expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203549250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345610A (en) * | 2016-05-08 | 2017-11-14 | 江苏贝特管件有限公司 | Anti-corrosion direct-burried external-compression type expansion bellow |
-
2013
- 2013-11-21 CN CN201320745472.0U patent/CN203549250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345610A (en) * | 2016-05-08 | 2017-11-14 | 江苏贝特管件有限公司 | Anti-corrosion direct-burried external-compression type expansion bellow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20151121 |
|
| EXPY | Termination of patent right or utility model |