CN207687550U - A kind of bellows and flange connection for type metal expansion joint - Google Patents
A kind of bellows and flange connection for type metal expansion joint Download PDFInfo
- Publication number
- CN207687550U CN207687550U CN201721829748.8U CN201721829748U CN207687550U CN 207687550 U CN207687550 U CN 207687550U CN 201721829748 U CN201721829748 U CN 201721829748U CN 207687550 U CN207687550 U CN 207687550U
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- China
- Prior art keywords
- bellows
- welding bead
- flange
- expansion joint
- stage casing
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Abstract
A kind of bellows and flange connection for type metal expansion joint, flange including bellows and positioned at bellows both ends, the endoporus ecto-entad of each flange is divided into outer segment, stage casing and inner segment, the internal diameter in stage casing is less than the internal diameter of inner segment and outer segment, the straight pipe of bellows is matched with inner segment to be plugged together, there are annular gaps, the gap to be filled and led up by welding bead between straight pipe end and stage casing, and the thickness of welding bead is equal with the pipe thickness of straight pipe.Using the utility model, the skill set requirements to operator are on the one hand reduced, are conducive to the guarantee of welding bead quality；On the other hand it due to not washed away by medium at welding bead position, eliminates the hidden danger that welding bead position is susceptible to crackle and extends service life to improve the functional reliability of expansion joint.
Description
Technical field
The utility model is related to a kind of expansion joint, especially a kind of avoidable medium wash away welding bead be used for type metal expansion joint
Bellows and flange connection.
Background technology
Type metal expansion joint forms the conduit component with compensation function by metal bellows and metal component.Expansion of metal
Section is typically mounted on the pipe-line system of pumped (conveying) medium.Type metal expansion joint is in the row such as metallurgy, petrochemical industry, ship, cement, heating power, coal gas
Industry is widely used.The main composition of type metal expansion joint includes metal bellows and the flange positioned at metal bellows both ends, gold
Belong between bellows and flange by being welded to connect.Common bellows and flange connection are as shown in Figure 3, Figure 4：Bellows
Straight portion matching plug together in the endoporus of flange, the end of bellows and flange welding, welding bead be fillet welding road.It is this common
Connection structure there are the problem of it is as follows：1, washing away for medium is directly born at welding bead position, is susceptible to crackle and is caused to expand
Section failure, influences the service life of expansion joint；2, fillet welding road is higher to the skill set requirements of welder, is susceptible to because welding matter
Amount problem and shorten expansion joint service life.
Utility model content
The purpose of this utility model is that for the drawback of the prior art, a kind of avoidable welding bead position is provided and bears medium
It washes away, the easily controlled bellows and flange connection for type metal expansion joint of welding quality.
Problem described in the utility model is realized with following technical proposals：
A kind of bellows and flange connection for type metal expansion joint, including bellows and positioned at bellows both ends
Flange, the endoporus ecto-entad of each flange are divided into outer segment, stage casing and inner segment, and the internal diameter in stage casing is less than the interior of inner segment and outer segment
Diameter, the straight pipe of bellows is matched with inner segment to be plugged together, and there are annular gaps between straight pipe end and stage casing, and the gap is by welding bead
It fills and leads up, the thickness of welding bead is equal with the pipe thickness of straight pipe.
The stage casing of above-mentioned bellows and flange connection for type metal expansion joint, flange endoporus is equipped with protection fillet,
The larger diameter end of protection fillet is connect with outer segment, and the smaller diameter end of fillet is protected to be smoothly connected with welding bead.
The width of above-mentioned bellows and flange connection for type metal expansion joint, the welding bead is 3-4 millimeters.
The radius R of above-mentioned bellows and flange connection for type metal expansion joint, the protection fillet is 5-7 millis
Rice.
The utility model for solving the problems, such as existing metal bellows and flange connection is unreasonable is improved,
In flange endoporus and bellows connecting portion setting welding bead and protection fillet, the downhand welding docked is formed between flange and bellows
Road protects the setting of fillet that can wash away welding bead to avoid medium.Using the utility model, on the one hand reduce to operator's
Skill set requirements are conducive to the guarantee of welding bead quality；On the other hand due to not washed away by medium at welding bead position, welding bead position is eliminated
It is susceptible to the hidden danger of crackle, to improve the functional reliability of expansion joint, extends service life.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 is the structural schematic diagram of existing bellows and flange connection；
Fig. 4 is the partial enlarged view at B in Fig. 3.
Each list of reference numerals is in figure：1, flange, 2, bellows, 2-1, straight pipe, 3, welding bead, 4, protection fillet.
Specific implementation mode
Referring to Fig. 1, Fig. 2, the utility model includes bellows 2 and the flange 1 positioned at bellows both ends.The endoporus of each flange
It is divided into outer segment, stage casing and inner segment inwardly by outside, three sections of internal diameter is different, and the internal diameter in stage casing is less than the interior of inner segment and outer segment
Diameter.The straight pipe 2-1 of bellows is matched with inner segment to be plugged together, and the annular of 3-4 mm wides is reserved between straight pipe end and stage casing
Gap, the gap are filled and led up by welding bead 3, and the thickness of welding bead is equal with the pipe thickness of straight pipe.Above structure by former bellows with
The downhand welding road of docking is changed into the fillet welding road of flange connections, reduces welding difficulty, is conducive to improve welding bead weight.In order to protect
Shield welding bead is not washed away by medium, and protection fillet 4 is equipped in the stage casing of flange endoporus, protect fillet larger diameter end and flange it is outer
Section connects, consistent with the internal diameter of bellows straight flange at protection fillet minimum diameter, protects the smaller diameter end of fillet and welding bead smooth
Connection.It is 5-7 millimeters to protect the radius R of fillet.After setting protection fillet, fillet arc-shaped surface and media contact, butt welding are protected
Road plays a protective role, and avoids welding bead molding crackle under the washing away of medium, improves the service life of expansion joint.
Claims (4)
1. a kind of bellows and flange connection for type metal expansion joint, including bellows (2) and it is located at bellows both ends
Flange (1), it is characterised in that：The endoporus ecto-entad of each flange is divided into outer segment, stage casing and inner segment, and the internal diameter in stage casing is small
In the internal diameter of inner segment and outer segment, the straight pipe (2-1) of bellows is matched with inner segment to be plugged together, between straight pipe end and stage casing there are
Annular gap, the gap are filled and led up by welding bead (3), and the thickness of welding bead is equal with the pipe thickness of straight pipe.
2. the bellows and flange connection according to claim 1 for type metal expansion joint, it is characterised in that：Flange
The stage casing of endoporus is equipped with protection fillet (4), protects the larger diameter end of fillet to be connect with outer segment, protects smaller diameter end and the weldering of fillet
Road is smoothly connected.
3. the bellows and flange connection according to claim 2 for type metal expansion joint, it is characterised in that：It is described
The width of welding bead is 3-4 millimeters.
4. the bellows and flange connection according to claim 3 for type metal expansion joint, it is characterised in that：It is described
It is 5-7 millimeters to protect the radius R of fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829748.8U CN207687550U (en) | 2017-12-22 | 2017-12-22 | A kind of bellows and flange connection for type metal expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829748.8U CN207687550U (en) | 2017-12-22 | 2017-12-22 | A kind of bellows and flange connection for type metal expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207687550U true CN207687550U (en) | 2018-08-03 |
Family
ID=62996052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721829748.8U Active CN207687550U (en) | 2017-12-22 | 2017-12-22 | A kind of bellows and flange connection for type metal expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207687550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882677A (en) * | 2019-04-16 | 2019-06-14 | 无锡金龙石化冶金设备制造有限公司 | A kind of alkyl plant reactor expansion joint |
| CN111986951A (en) * | 2020-07-08 | 2020-11-24 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker |
-
2017
- 2017-12-22 CN CN201721829748.8U patent/CN207687550U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882677A (en) * | 2019-04-16 | 2019-06-14 | 无锡金龙石化冶金设备制造有限公司 | A kind of alkyl plant reactor expansion joint |
| CN109882677B (en) * | 2019-04-16 | 2023-11-17 | 无锡金龙石化冶金设备制造有限公司 | Alkylation device reactor expansion joint |
| CN111986951A (en) * | 2020-07-08 | 2020-11-24 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker |
| CN111986951B (en) * | 2020-07-08 | 2022-07-05 | 平高集团有限公司 | Bellows subassembly, vacuum interrupter and vacuum circuit breaker |
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