CN216555923U - High-temperature and high-pressure combined expansion joint for steam pipeline - Google Patents
High-temperature and high-pressure combined expansion joint for steam pipeline Download PDFInfo
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- CN216555923U CN216555923U CN202123314681.3U CN202123314681U CN216555923U CN 216555923 U CN216555923 U CN 216555923U CN 202123314681 U CN202123314681 U CN 202123314681U CN 216555923 U CN216555923 U CN 216555923U
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- 238000007789 sealing Methods 0.000 claims abstract description 40
- 230000000670 limiting effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a high-temperature and high-pressure combined expansion joint for a steam pipeline, relates to the technical field of expansion joints, and aims to solve the problem that the existing expansion joint is poor in sealing performance due to the fact that joints are all flange-connected and gaps are prone to occurring in plane contact. The lower extreme of upper flange is provided with the bellows, the lower extreme of bellows is provided with the lower flange, and upper flange and lower flange and the equal welded connection of bellows, the upper surface of upper flange is provided with sealed recess, and sealed recess and upper flange structure as an organic whole, the below of lower flange is provided with sealed protruding circle, the outer wall of upper flange is provided with first fixing clip frame, and first fixing clip frame and upper flange welded connection, the outer wall of lower flange is provided with the second fixing clip frame, and second fixing clip frame and lower flange welded connection, be provided with the fixed end pipe between first fixing clip frame and the second fixing clip frame.
Description
Technical Field
The utility model relates to the technical field of expansion joints, in particular to a high-temperature and high-pressure combined expansion joint for a steam pipeline.
Background
The expansion joint is also called as compensator or expansion joint, and is composed of bellows and end pipe, support, flange, conduit and other accessories which form the working main body, and can effectively compensate the flexible element with axial deformation, and the effective expansion deformation of the bellows of the working main body is utilized to absorb the size change of pipelines, conduits, containers and the like caused by expansion with heat and contraction with cold or compensate the axial, transverse and angular displacement of the pipelines, conduits, containers and the like.
However, the joints of the existing expansion joints are all flange joints, and plane contact is easy to generate gaps, so that the sealing property is poor; therefore, the existing requirements are not met, and a high-temperature high-pressure combined expansion joint for a steam pipeline is provided for the requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-temperature and high-pressure combined expansion joint for a steam pipeline, which aims to solve the problem that the joint of the existing expansion joint in the background technology is flange connection, and the plane contact is easy to generate gaps, so that the sealing property is poor.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high temperature high pressure combination formula expansion joint for steam conduit, includes the upper flange, the lower extreme of upper flange is provided with the bellows, the lower extreme of bellows is provided with the lower flange, and upper flange and lower flange and the equal welded connection of bellows, the upper surface of upper flange is provided with sealed recess, and sealed recess and upper flange structure as an organic whole, the below of lower flange is provided with sealed protruding circle, the outer wall of upper flange is provided with first fixing clip frame, and first fixing clip frame and upper flange welded connection, the outer wall of lower flange is provided with second fixing clip frame, and second fixing clip frame and lower flange welded connection, be provided with the fixed end pipe between first fixing clip frame and the second fixing clip frame.
Preferably, the inner wall of the sealing groove is provided with four upper flange hole grooves, the upper flange hole grooves and the upper flange are of an integrated structure, the number of the upper flange hole grooves is four, the surface of the lower flange is provided with four lower flange hole grooves, the lower flange hole grooves and the lower flange are of an integrated structure, and the number of the lower flange hole grooves is four.
Preferably, the upper surface of sealed protruding circle is provided with corresponding hole groove, and corresponds hole groove and sealed protruding circle structure as an organic whole, one side that corresponds the hole groove is provided with the safety groove, the inside of safety groove is provided with the bolt, the lower surface of lower flange is provided with the second thread groove, and sealed protruding circle passes through bolt and second thread groove threaded connection, second thread groove, corresponding hole groove, bolt and safety groove all are provided with four.
Preferably, one side of the upper flange hole groove is provided with four first thread grooves, and the first thread grooves and the upper flange are of an integral structure.
Preferably, the both ends outer wall of fixed end pipe all is provided with the screw thread, and screw thread and fixed end pipe structure as an organic whole, the both ends of fixed end pipe all are provided with the nut, and the nut passes through screw thread and fixed end pipe threaded connection.
Preferably, the bellows is internally provided with a through cavity, and two ends of the through cavity respectively penetrate through the upper flange and the lower flange.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the sealing groove is arranged on the upper surface of the upper flange, the sealing convex ring is arranged below the lower flange, when another expansion joint is externally connected, the lower flange of the other expansion joint is fixed with the upper flange of the existing expansion joint, the sealing convex ring is inserted into the sealing groove, the limiting effect is achieved, meanwhile, the contact area and the sealing range of the upper flange and the lower flange are also improved, compared with the plane contact of the existing upper flange and the lower flange, the gap is not easy to occur, even if the gap occurs, due to the curved surface sealing, more than one sealing surface is formed, the multiple sealing is realized, and the integral sealing performance is not influenced.
2. Through setting up first thread groove at sealed recess inner wall, set up the safety groove on sealed protruding circle surface, set up the bolt in the inside of safety groove, lower surface at the flange sets up the second thread groove down, sealed protruding circle passes through bolt and second thread groove threaded connection, realize that sealed protruding circle can be dismantled, when not using sealed protruding circle sealed, can dismantle sealed protruding circle put into sealed recess inside, utilize the bolt to fix with first thread groove, just so realize that upper flange and lower flange plane contact are sealed, sealed variety and flexibility have been improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the lower flange structure of the present invention;
FIG. 3 is a schematic view of the lower flange and sealing bead of the present invention in a disassembled configuration;
in the figure: 1. an upper flange; 2. a lower flange; 3. a bellows; 4. fixing the end pipe; 5. a thread; 6. a first fixing clamp frame; 7. a second fixing clamp frame; 8. a nut; 9. sealing the groove; 10. a first thread groove; 11. an upper flange hole groove; 12. a lower flange hole groove; 13. sealing the convex ring; 14. a safety groove; 15. a bolt; 16. a second thread groove; 17. corresponding hole slots; 18. through the cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, an embodiment of the present invention is shown: the utility model provides a high temperature high pressure combination formula expansion joint for steam conduit, including upper flange 1, the lower extreme of upper flange 1 is provided with bellows 3, the lower extreme of bellows 3 is provided with lower flange 2, and upper flange 1 and lower flange 2 and the equal welded connection of bellows 3, the upper surface of upper flange 1 is provided with sealed recess 9, and sealed recess 9 and upper flange 1 structure as an organic whole, the below of lower flange 2 is provided with sealed convex ring 13, the outer wall of upper flange 1 is provided with first fixing clip frame 6, and first fixing clip frame 6 and upper flange 1 welded connection, the outer wall of lower flange 2 is provided with second fixing clip frame 7, and second fixing clip frame 7 and lower flange 2 welded connection, be provided with fixed end pipe 4 between first fixing clip frame 6 and the second fixing clip frame 7.
Further, the inner wall of the sealing groove 9 is provided with four upper flange hole grooves 11, the upper flange hole grooves 11 and the upper flange 1 are of an integral structure, the number of the upper flange hole grooves 11 is four, the surface of the lower flange 2 is provided with four lower flange hole grooves 12, the lower flange hole grooves 12 and the lower flange 2 are of an integral structure, and the four lower flange hole grooves 12 are used for being fixedly connected with an external fastening piece for use.
Further, the upper surface of sealed protruding circle 13 is provided with corresponding hole groove 17, and correspond hole groove 17 and sealed protruding circle 13 structure as an organic whole, one side that corresponds hole groove 17 is provided with safety groove 14, safety groove 14's inside is provided with bolt 15, the lower surface of lower flange 2 is provided with second thread groove 16, and sealed protruding circle 13 passes through bolt 15 and 16 threaded connection of second thread groove, second thread groove 16, correspond hole groove 17, bolt 15 and safety groove 14 all are provided with four, sealed protruding circle 13 relies on bolt 15 and 16 threaded connection of second thread groove, it can dismantle to realize sealed protruding circle 13, the flexibility is improved.
Further, one side of the upper flange hole groove 11 is provided with a first thread groove 10, the first thread groove 10 and the upper flange 1 are of an integral structure, the first thread groove 10 is provided with four, the sealing convex ring 13 is detached and then placed into the sealing groove 9, the bolt 15 and the first thread groove 10 on the inner wall of the sealing groove 9 are used for fixing, the upper flange 1 and the lower flange 2 are in plane contact sealing, and the sealing diversity and flexibility are improved.
Further, the outer wall of the two ends of the fixed end pipe 4 is provided with threads 5, the threads 5 and the fixed end pipe 4 are of an integral structure, the two ends of the fixed end pipe 4 are provided with nuts 8, the nuts 8 are in threaded connection with the fixed end pipe 4 through the threads 5, and the fixed end pipe 4 is utilized to support the corrugated pipe 3.
Further, a through cavity 18 is arranged inside the corrugated pipe 3, two ends of the through cavity 18 respectively penetrate through the upper flange 1 and the lower flange 2, and steam is transported inside the corrugated pipe 3 through the through cavity 18.
The working principle is as follows: when in use, the sealing convex ring 13 is in threaded connection with the second thread groove 16 by the bolt 15 to realize the fixation of the sealing convex ring 13 and the lower surface of the lower flange 2, when another expansion joint is externally connected, the sealing convex ring 13 of one expansion joint is inserted into the sealing groove 9 of the upper flange 1 of the other expansion joint to realize curved surface sealing, the contact area and the sealing range are increased, gaps are not easy to appear, even if gaps appear, because of the curved surface sealing, the sealing surface is not more than one, the integral sealing performance is not influenced, simultaneously, the connection stability of the two expansion joints is also improved, the two expansion joints are not easy to deviate, the sealing performance is further improved, the sealing convex ring 13 can be placed into the sealing groove 9 after being disassembled, the bolt 15 is used for fixing with the first thread groove 10 on the inner wall of the sealing groove 9, and thus, the plane contact sealing of the upper flange 1 and the lower flange 2 is realized, the diversity and flexibility of sealing are improved.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a high temperature high pressure combination formula expansion joint for steam conduit, includes flange (1), its characterized in that: the lower end of the upper flange (1) is provided with a corrugated pipe (3), the lower end of the corrugated pipe (3) is provided with a lower flange (2), the upper flange (1) and the lower flange (2) are welded with the corrugated pipe (3), the upper surface of the upper flange (1) is provided with a sealing groove (9), the sealing groove (9) and the upper flange (1) are of an integral structure, a sealing convex ring (13) is arranged below the lower flange (2), the outer wall of the upper flange (1) is provided with a first fixing clamp frame (6), the first fixing clamp frame (6) is welded with the upper flange (1), the outer wall of the lower flange (2) is provided with a second fixing clamp frame (7), and the second fixing clamp frame (7) is welded with the lower flange (2), and a fixing end pipe (4) is arranged between the first fixing clamp frame (6) and the second fixing clamp frame (7).
2. The high-temperature high-pressure combined expansion joint for the steam pipeline as claimed in claim 1, wherein: the inner wall of sealed recess (9) is provided with flange hole groove (11), and goes up flange hole groove (11) and upper flange (1) structure as an organic whole, upper flange hole groove (11) are provided with four, the surface of lower flange (2) is provided with lower flange hole groove (12), and lower flange hole groove (12) and lower flange (2) structure as an organic whole, lower flange hole groove (12) are provided with four.
3. The high-temperature high-pressure combined expansion joint for the steam pipeline as claimed in claim 1, wherein: the upper surface of sealed protruding circle (13) is provided with corresponds hole groove (17), and corresponds hole groove (17) and sealed protruding circle (13) structure as an organic whole, one side that corresponds hole groove (17) is provided with safety groove (14), the inside of safety groove (14) is provided with bolt (15), the lower surface of lower flange (2) is provided with second thread groove (16), and sealed protruding circle (13) pass through bolt (15) and second thread groove (16) threaded connection, second thread groove (16), correspond hole groove (17), bolt (15) and safety groove (14) and all be provided with four.
4. The high-temperature high-pressure combined expansion joint for the steam pipeline as claimed in claim 2, wherein: one side of the upper flange hole groove (11) is provided with a first thread groove (10), the first thread groove (10) and the upper flange (1) are of an integral structure, and the number of the first thread grooves (10) is four.
5. The high-temperature high-pressure combined expansion joint for the steam pipeline as claimed in claim 1, wherein: the outer wall of the two ends of the fixed end pipe (4) is provided with threads (5), the threads (5) and the fixed end pipe (4) are of an integrated structure, nuts (8) are arranged at the two ends of the fixed end pipe (4), and the nuts (8) are in threaded connection with the fixed end pipe (4) through the threads (5).
6. The high-temperature high-pressure combined expansion joint for the steam pipeline as claimed in claim 1, wherein: the corrugated pipe (3) is internally provided with a through cavity (18), and two ends of the through cavity (18) respectively penetrate through the upper flange (1) and the lower flange (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123314681.3U CN216555923U (en) | 2021-12-27 | 2021-12-27 | High-temperature and high-pressure combined expansion joint for steam pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123314681.3U CN216555923U (en) | 2021-12-27 | 2021-12-27 | High-temperature and high-pressure combined expansion joint for steam pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216555923U true CN216555923U (en) | 2022-05-17 |
Family
ID=81557062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123314681.3U Active CN216555923U (en) | 2021-12-27 | 2021-12-27 | High-temperature and high-pressure combined expansion joint for steam pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216555923U (en) |
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2021
- 2021-12-27 CN CN202123314681.3U patent/CN216555923U/en active Active
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