CN209925816U - Pipeline connecting flange - Google Patents
Pipeline connecting flange Download PDFInfo
- Publication number
- CN209925816U CN209925816U CN201920134124.7U CN201920134124U CN209925816U CN 209925816 U CN209925816 U CN 209925816U CN 201920134124 U CN201920134124 U CN 201920134124U CN 209925816 U CN209925816 U CN 209925816U
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- flange
- nut
- wire mesh
- pad
- gasket
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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The utility model provides a pipeline connecting flange, which comprises a first flange body and a second flange body, and is characterized in that a flange plate is integrally formed on one side of the first flange body opposite to the second flange body, a flange pad is arranged between the two flange plates, the first flange body, the second flange body, the flange plates and the flange pad are all provided with a first through hole for a pipeline to run through, an internal thread is arranged in the first through hole of one flange plate, the other flange plate is provided with a convex connector with an external thread, the edges of the two flange plates and the flange pad are all provided with a plurality of second through holes along the circumferential direction, a bolt is arranged in the second through hole, the screw rod of the bolt comprises a first part and a second part, the diameter of the first part is larger than that of the second part, the first part is in threaded connection with a first nut, the second part is in threaded connection with a second nut, and the thread of the first part is opposite to the thread of the second part, and a metal gasket is arranged between the first nut and the second nut on the bolt.
Description
Technical Field
The utility model relates to a flange technical field especially relates to a pipeline connecting flange.
Background
The flange connection is a detachable joint which is formed by respectively fixing two pipelines, pipe fittings or equipment on a flange plate, adding a flange pad between the two flange plates and finally tightening the two flange plates by bolts to tightly combine the two flange plates; the existing pipeline connecting flange is easy to loosen a nut on the flange after being used for a long time, so that a flange gasket is not tightly pressed, liquid or gas inside a pipeline is easy to leak, and the using effect is not good.
Disclosure of Invention
The utility model discloses just to above technical problem, provide a pipe connecting flange.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: a pipeline connecting flange comprises a first flange body and a second flange body, and is characterized in that a flange plate is integrally formed on one side, opposite to the first flange body and the second flange body, of the first flange body, a flange pad is arranged between the two flange plates, first through holes for a pipeline to pass through are formed in the first flange body, the second flange body, the flange plates and the flange pad, internal threads are formed in the first through holes of one flange plate, a convex connector with external threads is formed in the other flange plate, the internal threads are matched with the external threads, a plurality of second through holes are formed in the edges of the two flange plates and the flange pad along the circumferential direction, bolts are arranged in the second through holes, a screw rod of each bolt comprises a first part and a second part, the diameter of the first part is larger than that of the second part, the first part penetrates through the two flange plates and the flange pad and is in threaded connection with a first nut which abuts against one, the second part is connected with a second nut in a threaded manner, the thread of the first part and the thread of the second part are opposite in rotating direction, a metal gasket is arranged between the first nut and the second nut on the bolt, and two side faces of the metal gasket are respectively abutted to the first nut and the second nut.
The first nut and the second nut are provided with a plurality of bulges on the surfaces contacted with the metal gasket, and the metal gasket is provided with a plurality of grooves corresponding to the bulges.
The flange pad is made of rubber materials, a first metal wire mesh and a second metal wire mesh are arranged inside the flange pad and are annular surface meshes with the same size, a plurality of metal rings are arranged in an annular space formed by the first metal wire mesh and the second metal wire mesh, and graphite powder is filled in gaps of the metal rings.
And a plurality of weight reduction grooves are formed in the opposite sides of the two flange plates.
Compared with the prior art, the beneficial effects of the utility model are that: the two flange plates arranged in the utility model are connected by screw thread, thereby effectively enhancing the sealing performance of the connecting part; the first nut that sets up and the second nut revolve to the difference, can effectually prevent that the nut is not hard up, and the result of use is better.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. a first flange body; 2. a second flange body; 3. a flange plate; 4. a flange pad; 5. a first through hole; 6. a connector; 7. a first portion; 8. a second portion; 9. a first nut; 10. a second nut; 11. a metal gasket; 12. a first wire mesh; 13. a second wire mesh; 14. a metal ring; 15. and a weight reduction groove.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
as shown in figure 1, a pipeline connecting flange comprises a first flange body 1 and a second flange body 2, a flange plate 3 is integrally formed on one side, opposite to the first flange body 1 and the second flange body 2, of the first flange body 1, a flange pad 4 is arranged between the two flange plates 3, the first flange body 1, the second flange body 2, first through holes 5 for a pipeline to penetrate through are formed in the flange plates 3 and the flange pad 4, internal threads are formed in the first through holes 5 of one flange plate 3, a convex connector 6 with external threads is arranged on the other flange plate 3, the internal threads and the external threads are matched, a plurality of second through holes are formed in the edges of the two flange plates 3 and the flange pad 4 along the circumferential direction, bolts are arranged in the second through holes, the screw rods of the bolts comprise a first portion 7 and a second portion 8, the diameter of the first portion 7 is larger than that of the second portion 8, the first portion 7 penetrates through the two flange plates 3 and the flange pad 4 and is in threaded connection with the first screw abutting against one flange The nut 9 and the second part 8 are connected with a second nut 10 in a threaded mode, the thread of the first part 7 and the thread of the second part 8 are opposite in rotating direction, a metal gasket 11 is arranged between the first nut 9 and the second nut 10 on the bolt, and two side faces of the metal gasket 11 are respectively abutted to the first nut 9 and the second nut 10.
The first nut 9 and the second nut 10 are provided with a plurality of protrusions on the surface contacting with the metal gasket 11, and the metal gasket 11 is provided with a plurality of grooves corresponding to the protrusions.
The flange pad 4 is made of rubber materials, a first metal wire mesh 12 and a second metal wire mesh 13 are arranged inside the flange pad 4, the first metal wire mesh 12 and the second metal wire mesh 13 are annular surface meshes with the same size, a plurality of metal rings 14 are arranged in an annular space formed by the first metal wire mesh 12 and the second metal wire mesh 13, and graphite powder is filled in gaps among the metal rings 14.
And a plurality of weight reduction grooves 15 are formed in the opposite sides of the two flange plates 3.
The two flange plates 3 arranged in the utility model are connected through the screw thread, thereby effectively enhancing the sealing performance of the connecting part; when the first nut 9 is loosened after the flange is used for a long time, the loosening trend of the first nut 9 can drive the metal gasket 11 and the second nut 10 to be loosened simultaneously, but the first nut 9 cannot be loosened due to the fact that the screwing trend of the second nut 10 and the loosening trend of the first nut 9 are in the same direction, and therefore the effect of preventing the nuts from loosening is achieved; in addition, the metal ring 14 arranged inside the flange gasket 4 can effectively reduce the shearing force applied to the inside of the flange gasket 4 when the flange gasket 4 is vibrated, so that the flange gasket 4 is prevented from being torn, the service life of the flange gasket 4 is prolonged, and the sealing effect is further improved.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.
Claims (4)
1. A pipeline connecting flange comprises a first flange body (1) and a second flange body (2), and is characterized in that flanges (3) are integrally formed on one opposite side of the first flange body (1) and the second flange body (2), a flange pad (4) is arranged between the two flanges (3), first through holes (5) for pipelines to penetrate through are formed in the first flange body (1), the second flange body (2), the flanges (3) and the flange pad (4), an internal thread is arranged in the first through hole (5) of one flange (3), a convex connector (6) with an external thread is arranged on the other flange (3), the internal thread is matched with the external thread, a plurality of second through holes are formed in the edges of the two flanges (3) and the flange pad (4) along the circumferential direction, bolts are arranged in the second through holes, and a screw rod of each bolt comprises a first part (7) and a second part (8), and the diameter of the first part (7) is greater than that of the second part (8), the first part (7) penetrates through the two flange plates (3) and the flange pad (4) and is in threaded connection with a first nut (9) abutted to one of the flange plates (3), a second nut (10) is in threaded connection with the second part (8), the threads of the first part (7) are opposite to those of the second part (8), a metal gasket (11) is arranged between the first nut (9) and the second nut (10) on the bolt, and two side faces of the metal gasket (11) are respectively abutted to the first nut (9) and the second nut (10).
2. A pipe connecting flange according to claim 1, wherein the surfaces of the first nut (9) and the second nut (10) contacting the metal gasket (11) are provided with a plurality of protrusions, and the metal gasket (11) is provided with a plurality of grooves corresponding to the protrusions.
3. A pipe connecting flange according to claim 1, wherein the flange gasket (4) is made of rubber material, and the flange gasket (4) is internally provided with a first wire mesh (12) and a second wire mesh (13), the first wire mesh (12) and the second wire mesh (13) are annular surface meshes with the same size, a plurality of metal rings (14) are arranged in an annular space formed by the first wire mesh (12) and the second wire mesh (13), and gaps of the metal rings (14) are filled with graphite powder.
4. A pipe coupling flange according to claim 1, wherein the flanges (3) are provided with weight-reducing grooves (15) on opposite sides thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920134124.7U CN209925816U (en) | 2019-01-26 | 2019-01-26 | Pipeline connecting flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920134124.7U CN209925816U (en) | 2019-01-26 | 2019-01-26 | Pipeline connecting flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925816U true CN209925816U (en) | 2020-01-10 |
Family
ID=69068324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920134124.7U Active CN209925816U (en) | 2019-01-26 | 2019-01-26 | Pipeline connecting flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113257445A (en) * | 2021-07-01 | 2021-08-13 | 中国核动力研究设计院 | System for instantaneously measuring neutron flux under high-temperature and high-pressure working condition |
-
2019
- 2019-01-26 CN CN201920134124.7U patent/CN209925816U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113257445A (en) * | 2021-07-01 | 2021-08-13 | 中国核动力研究设计院 | System for instantaneously measuring neutron flux under high-temperature and high-pressure working condition |
| CN113257445B (en) * | 2021-07-01 | 2021-10-22 | 中国核动力研究设计院 | System for instantaneously measuring neutron flux under high-temperature and high-pressure working condition |
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