CN218719458U - Threaded connection structure of lined stainless steel composite pipe - Google Patents
Threaded connection structure of lined stainless steel composite pipe Download PDFInfo
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- CN218719458U CN218719458U CN202223109940.3U CN202223109940U CN218719458U CN 218719458 U CN218719458 U CN 218719458U CN 202223109940 U CN202223109940 U CN 202223109940U CN 218719458 U CN218719458 U CN 218719458U
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Abstract
The utility model discloses a threaded connection structure of compound pipe of inside lining stainless steel, including compound pipe of first stainless steel, the compound pipe of second stainless steel and connecting sleeve, compound pipe of first stainless steel is connected through the mode that the screw thread closed soon with the compound pipe of second stainless steel, the one end of the compound outer wall of first stainless steel from left to right has set gradually first bulge loop and first external screw thread, first bulge loop fixed connection is at the outer wall of the compound pipe of first stainless steel, and the compound pipe of first stainless steel is tentatively docked the back with the compound pipe of second stainless steel, and threaded connection is in the outside of first bulge loop and docking sleeve again to the connecting sleeve, and the direction of rotation of second external screw thread and first external screw thread is opposite, when receiving the first external screw thread of vibrations and first internal thread backspin pine to take off, and the second external screw thread is the forward state of screwing this moment with the second internal thread to play the effect of avoiding the compound pipe of first stainless steel and second stainless steel to dock the department not hard up.
Description
Technical Field
The utility model belongs to the technical field of threaded connection structure, concretely relates to threaded connection structure of compound pipe of inside lining stainless steel.
Background
The stainless steel composite pipe is a hollow long-strip round steel material, and is mainly widely applied to industrial conveying pipelines such as petroleum, chemical engineering, medical treatment, food, light industry, mechanical instruments and the like, mechanical structural components and the like, and the stainless steel composite pipe is strong in corrosion resistance, especially wide in application in the field of marine oil transportation, and most of the existing pipelines are connected by simple threads when being butted, so that the existing pipelines are easy to loosen or deform after being vibrated or impacted when being used, and the sealing performance of the butted part is further influenced.
Disclosure of Invention
An object of the utility model is to provide a threaded connection structure of inside lining stainless steel composite pipe to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a threaded connection structure of a lined stainless steel composite pipe comprises a first stainless steel composite pipe, a second stainless steel composite pipe and a connection sleeve, wherein the first stainless steel composite pipe and the second stainless steel composite pipe are connected in a threaded screwing mode, a first convex ring and first external threads are sequentially arranged at one end of the outer wall of the first stainless steel composite pipe from left to right, the first convex ring is fixedly connected to the outer wall of the first stainless steel composite pipe, one end of the second stainless steel composite pipe is fixedly communicated with a butting barrel, first internal threads matched with the first external threads are arranged on the inner wall of the butting barrel, second external threads are arranged on the outer wall of the first convex ring and the outer wall of the butting barrel, the connection sleeve is arranged at the butt joint of the first stainless steel composite pipe and the second stainless steel composite pipe, and second internal threads matched with the two second external threads are arranged on the inner wall of the connection sleeve.
Preferably, a milling groove is formed in one end of the inner wall of the second stainless steel composite pipe, a sealing ring is embedded in the milling groove, a sealing insertion cylinder is fixedly connected to one end of the first stainless steel composite pipe, the sealing insertion cylinder is inserted into the sealing ring, and the sealing ring is in an extrusion state.
Preferably, one end of the inner wall of the sealing ring is in a flared shape expanding outwards.
Preferably, the inner diameter of the first stainless steel composite pipe, the inner diameter of the second stainless steel composite pipe and the inner diameter of the sealing insert cylinder are equal.
Preferably, one end of the first convex ring is fixedly connected with a limiting mechanism, one end of the butt joint cylinder is fixedly connected with a baffle ring, and the limiting mechanism and the baffle ring are respectively located at two ends of the connecting sleeve.
Preferably, the limiting mechanism comprises a mounting ring and a placing groove, the placing groove is formed in the middle of the mounting ring and is provided with a plurality of equal-distance distribution around the axis of the mounting ring, limiting stops are movably connected inside the placing groove, and elastic metal sheets are symmetrically arranged on one side of each limiting stop.
Preferably, the second external thread and the first external thread have opposite directions of rotation.
Compared with the prior art, the beneficial effects of the utility model are that: first stainless steel composite pipe and the preliminary back of butt joint of second stainless steel composite pipe, threaded connection is again in the outside of first bulge loop and butt joint section of thick bamboo to the adapter sleeve, the soon of second external screw thread and first external screw thread is opposite, when receiving vibrations first external screw thread and first internal thread backspin pine take off, second external screw thread and second internal thread are the forward state of screwing this moment, prevent first external screw thread and first internal thread backspin pine and take off, thereby play and avoid first stainless steel composite pipe and the compound pipe butt joint of second not hard up to lead to the leakproofness to reduce, and adapter sleeve can improve the intensity of butt joint, non-deformable fracture after receiving the impact.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded view of the present invention;
fig. 3 is a front sectional view of a second stainless steel composite tube according to the present invention;
fig. 4 is a front view of the present invention;
FIG. 5 isbase:Sub>A cross-sectional view of the plane A-A of the present invention;
fig. 6 is a cross-sectional view of plane B-B of the present invention.
In the figure: 1. a first stainless steel clad pipe; 2. a second stainless steel clad pipe; 3. a connecting sleeve; 4. a first convex ring; 5. a first external thread; 6. a docking barrel; 7. a second external thread; 8. a first internal thread; 9. a limiting mechanism; 91. a mounting ring; 92. a placing groove; 93. a limit stop block; 94. a resilient metal sheet; 10. a baffle ring; 11. a second internal thread; 12. a seal ring; 13. and sealing the inserting cylinder.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-6, the present invention provides the following technical solutions: a threaded connection structure of a lined stainless steel composite pipe comprises a first stainless steel composite pipe 1, a second stainless steel composite pipe 2 and a connection sleeve 3, wherein the first stainless steel composite pipe 1 and the second stainless steel composite pipe 2 are connected in a threaded screwing mode, one end of the outer wall of the first stainless steel composite pipe 1 is sequentially provided with a first convex ring 4 and first external threads 5 from left to right, the first convex ring 4 is fixedly connected to the outer wall of the first stainless steel composite pipe 1, one end of the second stainless steel composite pipe 2 is fixedly communicated with a butt joint barrel 6, the inner wall of the butt joint barrel 6 is provided with first internal threads 8 matched with the first external threads 5, the outer wall of the first convex ring 4 and the outer wall of the butt joint barrel 6 are both provided with second external threads 7, the butt joint of the first stainless steel composite pipe 1 and the second stainless steel composite pipe 2 is provided with the connection sleeve 3, and the inner wall of the connection sleeve 3 is provided with second internal threads 11 matched with the two second external threads 7.
Preferably, a milling groove is formed in one end of the inner wall of the second stainless steel composite pipe 2, a sealing ring 12 is embedded in the milling groove, a sealing insert cylinder 13 is fixedly connected to one end of the first stainless steel composite pipe 1, the sealing insert cylinder 13 is inserted into the sealing ring 12 in an inserting mode, the sealing ring 12 is in an extruding state, the sealing ring 12 is arranged between the sealing insert cylinder 13 and the inner wall of the second stainless steel composite pipe 2 in an extruding mode after butt joint, a gap between the outer wall of the sealing insert cylinder 13 and the inner wall of the second stainless steel composite pipe 2 is sealed, and the sealing effect of the butt joint is improved.
Preferably, one end of the inner wall of the sealing ring 12 is flared to facilitate the insertion of the sealing insert 13 into the sealing ring 12.
Preferably, the inner diameter of the first stainless steel composite pipe 1, the inner diameter of the second stainless steel composite pipe 2 and the inner diameter of the sealing insert barrel 13 are equal, so that the butt joint position is smooth after butt joint, and the stability of internal fluid transportation is improved.
Preferably, one end fixedly connected with stop gear 9 of first bulge loop 4, the one end fixedly connected with of a butt joint section of thick bamboo 6 keeps off ring 10, and stop gear 9 and fender ring 10 are located the both ends of connecting sleeve 3 respectively, carry on spacingly to connecting sleeve 3, avoid connecting sleeve 3 not hard up droing in the use.
Preferably, stop gear 9 includes collar 91 and resettlement groove 92, resettlement groove 92 has been seted up at the middle part of collar 91, resettlement groove 92 has a plurality of, a plurality of resettlement groove 92 distributes around the axis equidistance of collar 91, the inside swing joint of resettlement groove 92 has limit stop 93, limit stop 93's a lateral symmetry is provided with elastic metal piece 94, can compress limit stop 93 to resettlement groove 92 inside when installing and dismantling, dismouting connecting sleeve 3 carries out, limit stop 93 bounces after the installation of connecting sleeve 3 is accomplished, it is spacing to connecting sleeve 3, avoid connecting sleeve 3 derotation not hard up.
Preferably, the turning directions of the second external thread 7 and the first external thread 5 are opposite, when the first external thread 5 and the first internal thread 8 are reversely screwed and loosened under vibration, at the moment, the second external thread 7 and the second internal thread 11 are in a screwing state, and the first external thread 5 and the first internal thread 8 are prevented from reversely screwing and loosening, so that the sealing performance reduction caused by the looseness of the joint of the first stainless steel composite pipe 1 and the second stainless steel composite pipe 2 is avoided.
The utility model discloses a theory of operation and use flow: when the stainless steel composite pipe is installed, one end of a first stainless steel composite pipe 1 is screwed into the interior of a butting cylinder 6, a first external thread 5 is matched with a first internal thread 8 to preliminarily butt the first stainless steel composite pipe 1 and a second stainless steel composite pipe 2, after the first stainless steel composite pipe 1 is butted, one end of a first convex ring 4 is connected with one end of the butting cylinder 6 in the direction of one end, the tail end of a second external thread 7 on the outer wall of the first convex ring 4 can be connected with the head end of a second external thread 7 on the outer wall of the butting cylinder 6, a connecting sleeve 3 is further connected to the outer sides of the first convex ring 4 and the butting cylinder 6 in a threaded mode, the first stainless steel composite pipe 1 and the second stainless steel composite pipe 2 are further stably connected, the turning directions of the second external thread 7 and the first external thread 5 are opposite, when the first external thread 5 and the first internal thread 8 are reversely loosened under vibration, the second external thread 7 and the second internal thread 11 are in a forward screwing state, the first external thread 5 and the first internal thread 8 are prevented from being loosened in a reverse rotation manner, so that the situation that the sealing performance is reduced due to the fact that the butt joint of the first stainless steel composite pipe 1 and the second stainless steel composite pipe 2 is loosened is avoided, the strength of the butt joint can be improved, the connecting sleeve 3 is not prone to deformation and fracture after being impacted, the limiting mechanism 9 and the baffle ring 10 are respectively positioned at two ends of the connecting sleeve 3 to limit the connecting sleeve 3, the connecting sleeve 3 is prevented from being loosened in the using process, the limiting stop block 93 can be compressed into the arranging groove 92 when the connecting sleeve 3 is installed and disassembled, the connecting sleeve 3 is disassembled and assembled, the limiting stop block 93 bounces after the connecting sleeve 3 is installed, the connecting sleeve 3 is limited, the connecting sleeve 3 is prevented from being loosened in a reverse rotation manner, the sealing ring 12 is extruded and arranged between the outer wall of the sealing insertion cylinder 13 and the inner wall of the second stainless steel composite pipe 2 after the first stainless steel composite pipe 1 and the second stainless steel composite pipe 2 are butted, the gap between the outer wall of the sealing insert cylinder 13 and the inner wall of the second stainless steel composite pipe 2 is sealed, the sealing effect of the butt joint is improved, one end of the inner wall of the sealing ring 12 is in an outwards expanded horn mouth shape, the sealing insert cylinder 13 is conveniently inserted into the sealing ring 12 during butt joint, the inner diameter of the first stainless steel composite pipe 1, the inner diameter of the second stainless steel composite pipe 2 and the inner diameter of the sealing insert cylinder 13 are equal, the butt joint is smooth after butt joint, and the stability of internal fluid transportation is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a threaded connection structure of compound pipe of inside lining stainless steel, includes compound pipe of first stainless steel (1), compound pipe of second stainless steel (2) and connecting sleeve (3), its characterized in that: the first stainless steel composite pipe (1) and the second stainless steel composite pipe (2) are connected in a threaded screwing mode, a first convex ring (4) and a first external thread (5) are sequentially arranged at one end of the outer wall of the first stainless steel composite pipe (1) from left to right, the first convex ring (4) is fixedly connected to the outer wall of the first stainless steel composite pipe (1), one end of the second stainless steel composite pipe (2) is fixedly communicated with a butt joint barrel (6), a first internal thread (8) matched with the first external thread (5) is arranged on the inner wall of the butt joint barrel (6), second external threads (7) are arranged on the outer wall of the first convex ring (4) and the outer wall of the butt joint barrel (6), a connecting sleeve (3) is arranged at the butt joint of the first stainless steel composite pipe (1) and the second stainless steel composite pipe (2), and a second internal thread (11) matched with the two second external threads (7) is arranged on the inner wall of the connecting sleeve (3).
2. The threaded connection structure of the lined stainless steel composite pipe as claimed in claim 1, wherein: a milling groove is formed in one end of the inner wall of the second stainless steel composite pipe (2), a sealing ring (12) is embedded in the milling groove, a sealing insertion cylinder (13) is fixedly connected to one end of the first stainless steel composite pipe (1), the sealing insertion cylinder (13) is inserted into the sealing ring (12), and the sealing ring (12) is in an extrusion state.
3. The threaded connection structure of the stainless steel-lined composite pipe as claimed in claim 2, wherein: one end of the inner wall of the sealing ring (12) is in a flared shape which expands outwards.
4. The threaded connection structure of the lined stainless steel composite pipe as claimed in claim 2, wherein: the inner diameter of the first stainless steel composite pipe (1), the inner diameter of the second stainless steel composite pipe (2) and the inner diameter of the sealing insert cylinder (13) are equal.
5. The threaded connection structure of the lined stainless steel composite pipe according to claim 1, wherein: one end fixedly connected with stop gear (9) of first bulge loop (4), the one end fixedly connected with of butt joint section of thick bamboo (6) keeps off ring (10), stop gear (9) and fender ring (10) are located the both ends of connecting sleeve (3) respectively.
6. The threaded connection structure of the stainless steel-lined composite pipe as claimed in claim 5, wherein: stop gear (9) are including collar (91) and arrangement groove (92), arrangement groove (92) have been seted up at the middle part of collar (91), arrangement groove (92) have a plurality of, a plurality of arrangement groove (92) distribute around the axis equidistance of collar (91), the inside swing joint of arrangement groove (92) has limit stop (93), one side symmetry of limit stop (93) is provided with elastic metal piece (94).
7. The threaded connection structure of the lined stainless steel composite pipe according to claim 1, wherein: the first external thread (5) and the second external thread (7) have opposite rotation directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223109940.3U CN218719458U (en) | 2022-11-23 | 2022-11-23 | Threaded connection structure of lined stainless steel composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223109940.3U CN218719458U (en) | 2022-11-23 | 2022-11-23 | Threaded connection structure of lined stainless steel composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218719458U true CN218719458U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223109940.3U Active CN218719458U (en) | 2022-11-23 | 2022-11-23 | Threaded connection structure of lined stainless steel composite pipe |
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| CN (1) | CN218719458U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145405A (en) * | 2023-11-01 | 2023-12-01 | 克拉玛依君合恒泰实验检测有限合伙企业 | Joint, petroleum drilling machine and full-well-section well cementation casing rotary well cementation method |
| CN117685425A (en) * | 2024-02-02 | 2024-03-12 | 河北巨擎管道制造有限公司 | Energy-saving sealing structure for socket-and-spigot type prefabricated directly-buried heat-insulating pipe |
-
2022
- 2022-11-23 CN CN202223109940.3U patent/CN218719458U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145405A (en) * | 2023-11-01 | 2023-12-01 | 克拉玛依君合恒泰实验检测有限合伙企业 | Joint, petroleum drilling machine and full-well-section well cementation casing rotary well cementation method |
| CN117685425A (en) * | 2024-02-02 | 2024-03-12 | 河北巨擎管道制造有限公司 | Energy-saving sealing structure for socket-and-spigot type prefabricated directly-buried heat-insulating pipe |
| CN117685425B (en) * | 2024-02-02 | 2024-04-16 | 河北巨擎管道制造有限公司 | Energy-saving sealing structure for socket-and-spigot type prefabricated directly-buried heat-insulating pipe |
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