CN207334064U - A kind of expansion joint - Google Patents
A kind of expansion joint Download PDFInfo
- Publication number
- CN207334064U CN207334064U CN201721047605.1U CN201721047605U CN207334064U CN 207334064 U CN207334064 U CN 207334064U CN 201721047605 U CN201721047605 U CN 201721047605U CN 207334064 U CN207334064 U CN 207334064U
- Authority
- CN
- China
- Prior art keywords
- bellows
- expansion joint
- flange
- guide shell
- counterbore
- 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 - Fee Related
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Abstract
The utility model discloses a kind of expansion joint, including bellows and guide shell, the one end of bellows and guide shell outwards turns down and in the counterbore of embedded inlet flange outer end face, also outwards fold forms the bellows turnup structure being bonded with outlet(discharge) flange outer end face to the bellows other end, this structure can snap failure to avoid welded, can adjust the opposite coupled position of flange at flange.The inner surface of counterbore is equipped with multiple circular convex, and the line style sealing formed after circular convex extruding can improve the air-tightness of expansion joint.Bellows and water conservancy diversion cylinder material use the excellent austenitic stainless steel of high-temperature behavior, improve the reliability of expansion joint.
Description
Technical field
It the utility model is related to a kind of expansion joint.
Background technology
Expansion joint is for compensation additional stress caused by temperature difference and mechanical oscillation, and is arranged on one kind on pipeline and scratches
Property structure.Exhaust expansion is saved in the thermal deformation of compensation exhaust pipe, and mitigates the vibration of exhaust system and equipment.In the prior art
Authorization Notice No. is CN205560096U, and a kind of entitled expansion joint, disclosed structure includes bellows, the bellows
Interior to be equipped with guide shell, one end of the bellows is equipped with inlet flange, and the other end is equipped with outlet(discharge) flange, the entrance of the guide shell
Internal diameter is held to be more than the port of export internal diameter of the guide shell, it is characterised in that the one end of the expansion joint is equipped with turnup structure.On
State expansion joint and be divided into two embodiments：Embodiment one：One end of 1 bellows of component of component is welded with inlet flange 2, another
End is welded with outlet(discharge) flange 3.Directly washed away for weld seam at welding structure be subject to high temperature and high speed waste gas stream, crystal boundary easily occurs
Corrosion, grain boundary corrosion is one of most dangerous form of alloy local corrosion.This corrosion occurs on grain boundary first, then
Develop along crystal boundary to vertical-depth, in addition overall high vibration during the use of exhaust expansion section.As a result bellows can be produced to go out
The problem of existing desoldering or fragmentation.Embodiment two：The inlet flange 2 and outlet(discharge) flange 3 of component are slidably connected with bellows 1, ripple
The medial surface of line pipe 1 is fixedly connected with diversion pipe 4.1 diversion pipe 4 of bellows is fixedly connected with mode and does not describe herein, if
Welding structure equally exists the problem of guide shell desoldering or fragmentation of above-mentioned reason；If structure is nested, processing and connection
Complexity, and part wall thickness is relatively large.Add the complexity of part.
Utility model content
The technical problems to be solved in the utility model is in view of the foregoing drawbacks, there is provided a kind of expansion joint, the expansion joint can be kept away
No-welding structure snaps failure, improves the air-tightness and reliability of expansion joint.
In order to solve the above-mentioned technical problem, the utility model includes bellows, and guide shell, ripple are equipped with the bellows
One end of pipe is equipped with inlet flange, and the other end of bellows is equipped with outlet(discharge) flange, its architectural feature is：Outside the inlet flange
End face is equipped with counterbore, and the one end of the bellows outwards turns down the bellows turnup structure to be formed and can be embedded in counterbore, institute
The one end for stating guide shell outwards turns down the guide shell turnup structure to be formed and can be embedded in counterbore.
Also outwards fold forms the bellows turnup structure being bonded with outlet(discharge) flange outer end face to the bellows other end.
Circular convex is equipped with the bottom wall of the counterbore.
The opposing outer face of the bellows one end bellows turnup structure and the relatively interior table of guide shell turnup structure
Face paste is closed.
The bellows is made of austenitic stainless steel.Austenitic stainless steel high-temperature behavior is excellent, and improve expansion joint can
By property.
The guide shell is made of austenitic stainless steel.Austenitic stainless steel high-temperature behavior is excellent, and improve expansion joint can
By property.
The inlet flange is square, and the outlet(discharge) flange is circle.
Using the above scheme after the advantages of effect be：The one end of bellows and guide shell outwards turns down and embedded entrance
In the counterbore of flange outer end face, also outwards fold forms the bellows flange being bonded with outlet(discharge) flange outer end face to the bellows other end
Structure, this structure can snap failure to avoid welded, can adjust the opposite coupled position of flange at flange.Counterbore
Inner surface be equipped with multiple circular convex, the line style sealing formed after circular convex extruding can improve the airtight of expansion joint
Property.Bellows and water conservancy diversion cylinder material use the excellent austenitic stainless steel of high-temperature behavior, improve the reliability of expansion joint.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the enlarged drawing at A in Fig. 1；
Fig. 4 is the enlarged drawing at B in Fig. 1.
Embodiment
As Figure 1-Figure 4, which includes bellows 1, and guide shell 2, one end of bellows 1 are equipped with bellows 1
Equipped with inlet flange 3, the other end of bellows 1 is equipped with outlet(discharge) flange 4, as shown in Fig. 2, inlet flange 3 is side in the present embodiment
Shape, outlet(discharge) flange 4 is circle, in addition, inlet flange 3 and outlet(discharge) flange 4 can also be other shapes, but the two shape is different,
Two having differences of end flanges can prevent expansion joint setup error.As shown in figure 3, the outer end face of inlet flange 3 be equipped with it is heavy
Hole 31, the one end of bellows 1 outwards turn down the bellows turnup structure 11 to be formed and can be embedded in counterbore 31, and the one of guide shell 2
End outwards turns down the guide shell turnup structure 21 to be formed and can be embedded in counterbore 31,1 one end bellows turnup structure of bellows
11 opposing outer face is bonded with the opposite inner face of guide shell turnup structure 21.Also outwards fold is formed 1 other end of bellows
The bellows turnup structure 11 being bonded with 4 outer end face of outlet(discharge) flange.Double-turnup structure makes expansion joint without welding manner to couple
Each component is assembled, can solve easily to snap the generation of failure during welding expansion joint structure use；Turnup structure can be with the same time
Adjust flange at flange and bellows with respect to coupled position.
As shown in figure 3, circular convex 32 is equipped with the bottom wall of counterbore 31.21 phase of guide shell turnup structure in the present embodiment
It is more than the depth of counterbore 31 to the distance between outer surface and 31 bottom wall of counterbore.Inlet flange 2 is fixedly connected tightly with other flanges
Gu when, circular convex 32 extrudes bellows turnup structure 11 and guide shell turnup structure 21, forms line style, so that
It is tightly connected between two end face of flange, to reduce the leakage rate of air-flow, improves the air-tightness of expansion joint, solve exhaust expansion section
Couple end face gas leakage.
Bellows 1 is made of austenitic stainless steel in the present embodiment, and guide shell 2 is made of austenitic stainless steel, this implementation
Bellows 1 and guide shell 2 are made of identical material in example, and austenitic stainless steel high-temperature behavior is excellent, and improve expansion joint can
By property.
The utility model is not limited to above-mentioned embodiment, and those skilled in the art, are not departing from the utility model
On the premise of spirit and scope, some change and modification can be done.The scope of protection of the utility model should be with the utility model
Subject to claim.
Claims (7)
1. a kind of expansion joint, including bellows（1）, the bellows（1）It is interior to be equipped with guide shell（2）, bellows（1）One end set
There is inlet flange（3）, bellows（1）The other end be equipped with outlet(discharge) flange（4）, it is characterized in that：The inlet flange（3）Outer end
Face ring is equipped with counterbore（31）, the bellows（1）One end outwards turn down to be formed and can be embedded in counterbore（31）Interior bellows turns over
Side structure（11）, the guide shell（2）One end outwards turn down to be formed and can be embedded in counterbore（31）Interior guide shell turnup structure
（21）.
2. expansion joint according to claim 1, it is characterized in that：The bellows（1）The other end also outwards fold formed with
Outlet(discharge) flange（4）The bellows turnup structure of outer end face fitting（11）.
3. expansion joint according to claim 2, it is characterized in that：The counterbore（31）Bottom wall on be equipped with circular convex
（32）.
4. expansion joint according to claim 3, it is characterized in that：The bellows（1）One end bellows turnup structure
（11）Opposing outer face and guide shell turnup structure（21）Opposite inner face fitting.
5. expansion joint according to claim 1, it is characterized in that：The bellows（1）It is made of austenitic stainless steel.
6. expansion joint according to claim 2, it is characterized in that：The guide shell（2）It is made of austenitic stainless steel.
7. expansion joint according to claim 6, it is characterized in that：The inlet flange（3）To be square, the outlet(discharge) flange
（4）For circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721047605.1U CN207334064U (en) | 2017-08-21 | 2017-08-21 | A kind of expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721047605.1U CN207334064U (en) | 2017-08-21 | 2017-08-21 | A kind of expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207334064U true CN207334064U (en) | 2018-05-08 |
Family
ID=62374044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721047605.1U Expired - Fee Related CN207334064U (en) | 2017-08-21 | 2017-08-21 | A kind of expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207334064U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644525A (en) * | 2018-05-28 | 2018-10-12 | 王惠俊 | Nuclear power type folder puies forward formula and fast safeguards expansion joint |
-
2017
- 2017-08-21 CN CN201721047605.1U patent/CN207334064U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644525A (en) * | 2018-05-28 | 2018-10-12 | 王惠俊 | Nuclear power type folder puies forward formula and fast safeguards expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 |