CN211259885U - Flange seam allowance sealing structure - Google Patents
Flange seam allowance sealing structure Download PDFInfo
- Publication number
- CN211259885U CN211259885U CN201921572973.7U CN201921572973U CN211259885U CN 211259885 U CN211259885 U CN 211259885U CN 201921572973 U CN201921572973 U CN 201921572973U CN 211259885 U CN211259885 U CN 211259885U
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- China
- Prior art keywords
- pipeline
- flange
- flanges
- seal structure
- layer
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- 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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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The utility model discloses a flange tang seal structure belongs to mouth of pipe connection technical field, wherein: the pipeline comprises a pipeline A, at least two flange flanges, a flange pad, a pipeline B and a welding layer, wherein the inner side surfaces of the two flange flanges are respectively aligned with the inner diameter surfaces of the pipe orifices of the pipeline A and the pipeline B, and the aligned contact surfaces of the pipeline A and the pipeline B and the flange flanges are welded and fixed to form the welding layer; the medial surface of two turn-ups flanges aligns the back welding with pipeline A and pipeline B's mouth of pipe department inner diameter face respectively for the welded layer that forms is located pipeline A and pipeline B's inboard, makes the welded layer very easily inspect after being corroded by the corrosive medium among the chemical production, and when the maintenance, the manual work can directly get into and carry out the maintenance in the pipeline and handle, as long as with two pipeline short time shut down maintenance of connecting can, improved the production efficiency of enterprise.
Description
Technical Field
The utility model belongs to the technical field of the mouth of pipe is connected, a flange tang seal structure is related to.
Background
When ultra-large equipment of a chemical production device is connected with a pipeline or between pipelines, a flange and bolt connection mode is generally used, when the pipe orifices of the two pipelines are connected, as shown in figure 2, the inner side surface of the flange 2 is pressed against the outer side edge of the pipeline, the large plane of the flange 2 is welded to form a sealed welding layer 7 after being flush with the end surface of the pipeline, then the flange 3 welded on the pipe orifice is pressed by the carbon steel flange 3, the flange pad 5 between the two carbon steel flanges 3 is connected and pressed by the bolt 4 between the two carbon steel flanges 3, in the actual production, the flange spigot sealing structure obtained by the method is difficult to check after the welding layer 7 is corroded by a corrosive medium in chemical production because the welding layer 7 is shielded by the flange gasket 5, and when the maintenance, must make two pipeline that connect halt the maintenance for a long time, reduced the production efficiency of enterprise.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a flange tang seal structure.
The utility model discloses a following technical scheme can realize.
The utility model provides a pair of flange tang seal structure, wherein: the pipeline comprises a pipeline A, at least two flange flanges, a flange pad, a pipeline B and a welding layer, wherein the inner side surfaces of the two flange flanges are respectively aligned with the inner diameter surfaces of the pipe orifices of the pipeline A and the pipeline B, and the aligning contact surfaces of the pipeline A and the pipeline B and the flange flanges are welded and fixed to form the welding layer.
And carbon steel flanges are arranged outside the upper and lower flanging flanges at the pipe orifices of the pipeline A and the pipeline B and are fixedly connected through a fixing mechanism.
The fixing mechanism is a bolt, the upper and lower flanging flanges are provided with through holes, and the bolt is arranged in the through holes of the upper and lower flanging flanges.
The pipeline A and the pipeline B are coaxially arranged.
The flange pad is flush with the inner diameter cambered surfaces of the pipeline A and the pipeline B.
The flange is flush with the outer side end face of the flange pad.
The beneficial effects of the utility model reside in that: the medial surface of two turn-ups flanges aligns the back welding with pipeline A and pipeline B's mouth of pipe department inner diameter face respectively for the welded layer that forms is located pipeline A and pipeline B's inboard, makes the welded layer very easily inspect after being corroded by the corrosive medium among the chemical production, and when the maintenance, the manual work can directly get into and carry out the maintenance in the pipeline and handle, as long as with two pipeline short time shut down maintenance of connecting can, improved the production efficiency of enterprise.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;
fig. 2 is a prior art two-pipe flange connection.
In the figure: 1-line a; 2-flanging flange; 3-carbon steel flange; 4-a bolt; 5-flange pad; 6-line B; 7-welding layer.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A flange spigot seal structure wherein: the pipeline welding device comprises a pipeline A1, at least two flange flanges 2, a flange pad 5, a pipeline B6 and a welding layer 7, wherein the inner side surfaces of the two flange flanges 2 are respectively aligned with the inner diameter surfaces of the pipe openings of the pipeline A1 and the pipeline B6, and the aligned contact surfaces of the pipeline A1 and the pipeline B6 and the flange flanges 2 are welded and fixed to form the welding layer 7.
The working principle is as follows: when the welding layer 7 is corroded and penetrated, the pipeline A1 and the pipeline B6 are temporarily stopped and checked, and manual work directly enters the pipeline A1 and the pipeline B6 which are communicated with each other to carry out rapid maintenance treatment.
In order to improve the corrosion resistance of the welding layer 7, an anticorrosive layer is arranged on the welding layer 7.
The carbon steel flanges 3 are arranged outside the upper flanging flange 2 and the lower flanging flange 2 at the pipe orifices of the pipeline A1 and the pipeline B6, and the carbon steel flanges 3 are fixedly connected through a fixing mechanism, so that the connection firmness of the pipeline A1 and the pipeline B6 is improved.
The fixing mechanism is a bolt 4, the upper flanging flange 2 and the lower flanging flange 2 are both provided with through holes, the bolt 4 is arranged in the through holes of the upper flanging flange 2 and the lower flanging flange 2, and the existing bolt 4 connecting piece is used, so that the cost is reduced.
The pipeline A1 and the pipeline B6 are coaxially arranged, so that the flow capacity of liquid in the pipeline A1 and the pipeline B6 is improved.
The flange gasket 5 is flush with the inner diameter cambered surfaces of the pipeline A1 and the pipeline B6, so that the circulation capacity of liquid flowing through the pipeline A1, the flange gasket 5 and the pipeline B6 is improved.
The flange 2 is flush with the outer side end face of the flange pad 5, and the compactness of the equipment is improved.
Claims (7)
1. The utility model provides a flange tang seal structure which characterized in that: including pipeline A (1), two at least turn-ups flanges (2), flange pad (5), pipeline B (6), welded layer (7), the medial surface of two turn-ups flanges (2) aligns with the mouth of pipe department inside diameter face of pipeline A (1) and pipeline B (6) respectively, and pipeline A (1) and pipeline B (6) are aligned contact surface department with turn-ups flanges (2) and are welded fastening and form welded layer (7).
2. The flange spigot seal structure of claim 1 wherein: and an anti-corrosion layer is arranged on the welding layer (7).
3. The flange spigot seal structure of claim 1 wherein: the carbon steel flanges (3) are mounted outside the upper and lower flanging flanges (2) at the pipe orifices of the pipeline A (1) and the pipeline B (6), and the carbon steel flanges (3) are fixedly connected through a fixing mechanism.
4. The flange spigot seal structure of claim 3 wherein: the fixing mechanism is a bolt (4), the upper flanging flange and the lower flanging flange (2) are respectively provided with a through hole, and the bolt (4) is arranged in the through holes of the upper flanging flange and the lower flanging flange (2).
5. The flange spigot seal structure of claim 1 wherein: the pipeline A (1) and the pipeline B (6) are coaxially arranged.
6. The flange spigot seal structure of claim 1 wherein: the flange pad (5) is flush with the inner diameter cambered surfaces of the pipeline A (1) and the pipeline B (6).
7. The flange spigot seal structure of claim 1 wherein: the flange (2) is flush with the outer side end face of the flange pad (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572973.7U CN211259885U (en) | 2019-09-20 | 2019-09-20 | Flange seam allowance sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572973.7U CN211259885U (en) | 2019-09-20 | 2019-09-20 | Flange seam allowance sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211259885U true CN211259885U (en) | 2020-08-14 |
Family
ID=71957701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921572973.7U Expired - Fee Related CN211259885U (en) | 2019-09-20 | 2019-09-20 | Flange seam allowance sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211259885U (en) |
-
2019
- 2019-09-20 CN CN201921572973.7U patent/CN211259885U/en not_active Expired - Fee Related
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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: 20200814 Termination date: 20210920 |