CN220379126U - Blind flange connecting pipe - Google Patents
Blind flange connecting pipe Download PDFInfo
- Publication number
- CN220379126U CN220379126U CN202322026484.4U CN202322026484U CN220379126U CN 220379126 U CN220379126 U CN 220379126U CN 202322026484 U CN202322026484 U CN 202322026484U CN 220379126 U CN220379126 U CN 220379126U
- Authority
- CN
- China
- Prior art keywords
- blind flange
- connecting pipe
- end plate
- pipe body
- closed end
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 4
- 210000002445 nipple Anatomy 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The utility model discloses a blind flange connecting pipe, which comprises a blind flange body and a connecting pipe body. The two ends of the connecting pipe body are respectively provided with an opening and a closed end plate, and the closed end plate is provided with a central hole. The lower part of the closed end plate is attached to the outer surface of the blind flange body, and the center line of the center hole is coaxial with the center line of the blind flange body. The connecting pipe body at the outer side of the closed end plate is welded on the blind flange body, and then a hole is drilled from the central hole to the blind flange body through the opening of the connecting pipe body, and the closed end plate of the connecting pipe body is drilled until the blind flange body is drilled with the hole. By adopting the structure, as the blind flange body and the connecting pipe body are connected by welding firstly and then drilling, compared with the traditional plug-in welding connection mode, the problem that the opening radius of the blind flange body is limited is solved. Meanwhile, as the central line of the central hole is coaxial with the central line of the blind flange, the connection quality of the blind flange body and the connecting pipe body is ensured, and the problem that the central line of the blind flange body is not coaxial with the central line of the connecting pipe body is solved.
Description
Technical Field
The utility model belongs to the technical field of connecting pipes, and particularly relates to a blind flange connecting pipe.
Background
In practical production, a round hole is usually designed on a blind flange of the pressure vessel device to connect the connection pipe, and the connection pipe and the flange are connected with an external pipeline. At present, a blind flange and a connecting pipe are usually connected in a plug-in welding mode, namely, a method of drilling and then welding is adopted, and the method has the following problems: 1. the blind flange needs to be perforated, and the blind flange is perforated by biaxial stretching, and the perforated edge material is even twice biaxially stretched, so that the blind flange perforation radius is limited. 2. There is certain connection quality uncertainty between blind flange and the takeover, and blind flange central line and takeover central line are difficult coaxial yet.
Disclosure of Invention
The utility model aims to provide a blind flange connecting pipe, which can effectively solve the problems that in the prior art, a blind flange is limited in hole opening, the central line of the blind flange is not coaxial with the central line of the connecting pipe, and the like.
The utility model adopts the technical scheme that: the connecting pipe comprises a blind flange body and a connecting pipe body; the method is characterized in that: the two ends of the connecting pipe body are respectively provided with an opening and a closed end plate, and the closed end plate is provided with a central hole; the lower part of the closed end plate is attached to the outer surface of the blind flange body, and the central line of the central hole is coaxial with the central line of the blind flange body; the connecting pipe body at the outer side of the closed end plate is welded on the blind flange body, and then a hole is drilled from the central hole to the blind flange body through the opening of the connecting pipe body, and the closed end plate of the connecting pipe body is drilled until the blind flange body is drilled with the hole.
By adopting the structure, as the blind flange body and the connecting pipe body are connected by welding firstly and then drilling, compared with the traditional plug-in welding connection mode, the problem that the opening radius of the blind flange body is limited is solved. Meanwhile, as the central line of the central hole is coaxial with the central line of the blind flange, the connection quality of the blind flange body and the connecting pipe body is ensured, and the problem that the central line of the blind flange body is not coaxial with the central line of the connecting pipe body is solved. The utility model has simple structure and reasonable design, fills the blank of the connecting pipe, and is worth widely popularizing and applying.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1: a connecting pipe body; 1-1: an opening; 1-2: a closed end plate; 1-3: welding grooves; 1-4: a central bore; 2: a blind flange body;
Detailed Description
As shown, the utility model comprises a blind flange body 2 and a nipple body 1. The two ends of the connecting pipe body 2 are respectively provided with an opening 1-1 and a closed end plate 1-2, and the closed end plate 1-2 is provided with a central hole 1-4. The lower part of the closed end plate 1-2 is attached to the outer surface of the blind flange body 2, and the center line of the center hole 1-4 is coaxial with the center line of the blind flange body 2. The connecting pipe body 1 outside the closed end plate 1-2 is welded on the blind flange body 2, and then the blind flange body 2 is drilled through the opening 1-1 of the connecting pipe body 1 from the central hole 1-4 towards the blind flange body 2, and the closed end plate 1-2 of the connecting pipe body 1 is drilled until the blind flange body 2 is drilled with an opening.
The circumference of the connecting pipe body 1 outside the closed end plate 1-2 is provided with a welding groove 1-3, and the connecting pipe body 1 outside the closed end plate 1-2 is welded on the blind flange body 2 through the welding groove 1-3, so that the welding strength of a connecting weld joint is ensured. The included angle β=25±5° of the welding groove 1-3.
The outer diameter of the connecting pipe body 1 is not more than one half of the diameter of the central hole 1-4 of the connecting pipe body 1.
Claims (4)
1. A blind flange connecting pipe comprises a blind flange body (2) and a connecting pipe body (1); the method is characterized in that: the two ends of the connecting pipe body (1) are respectively provided with an opening (1-1) and a closed end plate (1-2), and the closed end plate (1-2) is provided with a central hole (1-4); the lower part of the closed end plate (1-2) is attached to the outer surface of the blind flange body (2), and the central line of the central hole (1-4) is coaxial with the central line of the blind flange body (2); the connecting pipe body (1) at the outer side of the closed end plate (1-2) is welded on the blind flange body (2), and then the hole is drilled from the central hole (1-4) to the blind flange body (2) through the opening (1-1) of the connecting pipe body (1), and the closed end plate (1-2) of the connecting pipe body (1) is drilled until the blind flange body (2) is drilled with the hole.
2. A blind flange nipple according to claim 1, wherein: the periphery of the connecting pipe body (1) at the outer side of the closed end plate (1-2) is provided with a welding groove (1-3), and the connecting pipe body (1) at the outer side of the closed end plate (1-2) is welded on the blind flange body (2) through the welding groove (1-3).
3. A blind flange nipple according to claim 2, wherein: the included angle beta=25±5° of the welding groove (1-3).
4. A blind flange nipple according to claim 1 or 2, characterized in that: the outer diameter of the connecting pipe body (1) is not more than one half of the diameter of the central hole (1-4) of the connecting pipe body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322026484.4U CN220379126U (en) | 2023-07-31 | 2023-07-31 | Blind flange connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322026484.4U CN220379126U (en) | 2023-07-31 | 2023-07-31 | Blind flange connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220379126U true CN220379126U (en) | 2024-01-23 |
Family
ID=89560989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322026484.4U Active CN220379126U (en) | 2023-07-31 | 2023-07-31 | Blind flange connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220379126U (en) |
-
2023
- 2023-07-31 CN CN202322026484.4U patent/CN220379126U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |