CN111853383A

CN111853383A - Flat tubing thickening coupling

Info

Publication number: CN111853383A
Application number: CN202010579900.1A
Authority: CN
Inventors: 肖云东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-10-30

Abstract

The invention relates to the technical field of petroleum transportation, and discloses a flat tubing thickening coupling which comprises two outer coupling bodies, wherein movable grooves are formed in the ends, close to the inner cavities of the two outer coupling bodies, of the two outer coupling bodies at equal angles, an inner coupling body is arranged between the two outer coupling bodies, and fixing strips are fixedly arranged on the outer side surfaces of the inner coupling bodies at equal angles. This flat tubing thickening coupling, through the activity groove activity joint of the internal portion of fixed strip and outer hoop, the outer hoop body at both ends is pressed to the accessible when needs are cleared up oil pipe and the junction of outer hoop body, spacing spring just is compressed this moment and is driven two outer hoop body relatively close to, the clean board that lies in inner hoop body both ends this moment can clear up oil pipe and the junction of outer hoop body, can be with oil pipe and outer hoop body junction clean up with unclamping outer hoop body and repetition this step through pressing repeatedly, thereby realized can conveniently carrying out the advantage of clearing up oil pipe and coupling junction.

Description

Flat tubing thickening coupling

Technical Field

The invention relates to the technical field of petroleum transportation, in particular to a flat tubing thickening coupling.

Background

Tubing is the pipe that transports crude oil and natural gas from the hydrocarbon reservoir to the surface after drilling is complete and is used to withstand the pressures generated during production. Wherein, the oil pipe is divided into a flat oil pipe (NU), a thickened oil pipe (EU) and an integral joint oil pipe. The flat tubing means that the end of the tubing is directly threaded without thickening and is provided with a coupling. The thickened oil pipe means that two pipe ends are externally thickened, then are threaded and are provided with a coupling. The integral joint oil pipe is characterized in that one end of the integral joint oil pipe passes through an internal thickening external thread, the other end of the integral joint oil pipe passes through an external thickening internal thread, and the integral joint oil pipe is directly connected without a coupling.

The existing coupling structure is simpler, and is generally of an integrated forming structure, and is generally of a hollow cylindrical shape, threads are turned at the upper end and the lower end of an inner cavity of the coupling structure to be used for connecting an oil pipe, but when the coupling structure is in actual use, as the oil pipe and the coupling are connected by the threads, certain sealing performance is achieved, but certain gaps are inevitable, and the gaps can store dirt and scale after long-time use, so that the oil pipe is blocked.

The existing coupling structure generally depends on threaded connection for sealing, but the joint is generally made of metal, and the oil pipe carries oil, so that the environment where the coupling is located is severe, the part of the coupling located at the ground bottom can be soaked in underground water for a long time, and the connection can be corroded after long-time use, so that the phenomenon of poor sealing property is caused.

Meanwhile, the existing coupling shell is generally made of metal materials, the phenomenon of cracking can occur due to the characteristics of metal in a low-temperature environment, and meanwhile, the corrosion resistance of the metal is generally weak, so that the phenomenon of corrosion of the coupling shell can occur, and the service life of the coupling is further influenced.

Disclosure of Invention

The invention provides a flat tubing thickening coupling which has the advantages of being capable of conveniently cleaning the joint of a tubing and the coupling, avoiding poor sealing performance of the joint and avoiding corrosion of a shell, and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a flat tubing thickening coupling, includes the outer hoop body, the quantity of the outer hoop body is two, two the impartial angle in one end that outer hoop body inner chamber is close to relatively has seted up movable groove, two be equipped with the inner hoop body between the outer hoop body, angle fixed mounting such as the lateral surface of the inner hoop body has the fixed strip, the inner hoop body passes through movable joint between fixed strip and the movable groove, the equal movable joint in both ends has the fixed plate about the inner hoop body, the quantity of fixed plate is two, two the equal fixed mounting in one end that the fixed plate was kept away from relatively has clean board.

Preferably, the inner side surface of the top end of the outer hoop body is provided with a limiting groove at an equal angle, the inner side surface of the outer hoop body is provided with two sealing gaskets, and the number of the sealing gaskets is two.

Preferably, two the lateral surface of sealed pad is equant to be seted up the spacing groove, sealed pad passes through spacing groove and the inside spacing activity joint of outer hoop.

Preferably, the inner side surface of the outer hoop body is provided with an external thread, an oil pipe is arranged inside the outer hoop body, the outer side surface of the oil pipe is provided with an internal thread, and the oil pipe is in threaded connection with the external thread on the inner side surface of the outer hoop body through the internal thread.

Preferably, the outer side surface of the oil pipe is in contact with the inner side surface of the sealing gasket, and the inner side surface of the oil pipe is in contact with the outer side surface of the cleaning plate.

Preferably, the left end of the movable groove is fixedly provided with a limiting spring positioned in the movable groove, and the other end of the limiting spring is fixedly connected with one end of the fixing strip.

Preferably, the outer side surface of the outer hoop body is fixedly sleeved with a heat insulation layer, and the outer side surface of the heat insulation layer is fixedly sleeved with a protective layer.

Preferably, the heat-insulating layer is made of sponge, and the protective layer is made of felt.

The invention has the following beneficial effects:

1. This flat tubing thickening coupling, movable groove has been seted up through the inside at the outer hoop body, and set up the outer hoop body into two and the outer hoop body of activity joint between two outer hoop bodies, and lateral surface fixed mounting between the inner hoop body has the fixed strip and through the activity groove activity joint of fixed strip and the inner portion of outer hoop, the outer hoop body at both ends is pressed to the accessible when needs are cleared up to the junction of oil pipe and outer hoop body, spacing spring just is compressed and is driven two outer hoop bodies and be relatively close to this moment, the cleaning plate that lies in inner hoop body both ends this moment can clear up the junction of oil pipe and outer hoop body, can be with oil pipe and outer hoop body junction clean up with unclamping outer hoop body and repeated this step through pressing repeatedly, thereby realized can conveniently carrying out the advantage of clearing up oil pipe and coupling junction.

2. This flat tubing thickening coupling, there is spacing through the medial surface on outer hoop body top etc. angle fixed mounting, and be provided with two sets of sealed pads, and the spacing groove has been seted up at sealed lateral surface etc. angle of filling up, sealed pad passes through spacing groove and spacing movable joint, when oil pipe and outer hoop body threaded connection, two sealed medial surfaces that fill up receive pressure and oil pipe's lateral surface abundant contact this moment, seal it, avoid the entering of steam, thereby realized avoiding the not good advantage of junction leakproofness.

3. This flat tubing thickening coupling has connect the heat preservation through the fixed cover of lateral surface at the outer hoop body to the anticorrosive coating has been cup jointed in the lateral surface of heat preservation is fixed, wherein the heat preservation makes its to have good thermal insulation performance for the sponge and can carry out good heat preservation to the hoop inside and avoid appearing the crack, the protective layer is made for the linoleum simultaneously, it has certain toughness and is waterproof, inevitably the influence of sewer to the coupling, the life of reinforcing coupling, thereby the advantage of avoiding the shell to corrode has been realized.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is an exploded view of the construction of the insulation and protective layers of the present invention;

FIG. 3 is an exploded view of the tubing construction of the present invention;

FIG. 4 is an exploded view of the gasket construction of the present invention;

FIG. 5 is an exploded view of the construction of the active slot of the present invention;

FIG. 6 is an exploded view of the cleaning plate structure of the present invention;

FIG. 7 is a schematic view of the appearance of the present invention;

fig. 8 is an enlarged schematic view of the structure at a in fig. 1.

In the figure: 1. an outer band body; 2. an oil pipe; 3. an internal thread; 4. an external thread; 5. a limiting strip; 6. a limiting groove; 7. a gasket; 8. a movable groove; 9. an inner band body; 10. a fixing strip; 11. a limiting spring; 12. a fixing plate; 13. cleaning the plate; 14. a heat-insulating layer; 15. and a protective layer.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a flat tubing thickening coupling comprises two outer hoop bodies 1, wherein the number of the outer hoop bodies 1 is two, movable grooves 8 are formed in the equal angles of the ends, relatively close to the inner cavities of the two outer hoop bodies 1, an inner hoop body 9 is arranged between the two outer hoop bodies 1, fixing strips 10 are fixedly arranged on the outer side surfaces of the inner hoop bodies 9 at equal angles, the inner hoop bodies 9 are movably clamped with the movable grooves 8 through the fixing strips 10, fixing plates 12 are movably clamped at the left end and the right end of the inner hoop body 9, the number of the fixing plates 12 is two, and cleaning plates 13 are fixedly arranged at the ends, relatively far away from the two fixing plates 12.

Wherein, the impartial angle of the medial surface on outer hoop body 1 top has seted up spacing groove 6, and the medial surface of outer hoop body 1 is equipped with sealed the pad 7, and the quantity of sealed pad 7 is two, and when oil pipe 2 and outer hoop body 1 threaded connection, the medial surface of two sealed pads 7 received pressure and oil pipe 2's lateral surface abundant contact this moment, seals it.

Wherein, spacing groove 6 has been seted up to the outer side surface of two sealed pads 7 equiangularly, and sealed pad 7 has sealed pad 7 to dismantle and then change sealed pad 7 convenient when sealed pad 7 needs to be changed through

spacing groove

6 and 5 activity joint of the inside spacing of the outer hoop body 1 through spacing groove 6.

Wherein, the medial surface of the outer hoop body 1 has been seted up external screw thread 4, and the inside of the outer hoop body 1 is equipped with oil pipe 2, and internal thread 3 has been seted up to the lateral surface of oil pipe 2, and oil pipe 2 carries out threaded connection through internal thread 3 and the external screw thread 4 threaded connection of the 1 medial surface of outer hoop body, through the internal thread 3 of seting up on the oil pipe 2 and the outer hoop body 1, realizes being connected between coupling and the oil pipe.

Wherein, the lateral surface of oil pipe 2 contacts with the medial surface of sealed 7, and the medial surface of oil pipe 2 contacts with the lateral surface of cleaning plate 13, and the medial surface of two sealed 7 pads receives pressure and oil pipe 2's lateral surface abundant contact, seals it, and cleaning plate 13 at interior hoop 9 both ends can clear up the junction of oil pipe 2 and outer hoop 1.

Wherein, the left end fixed mounting of activity groove 8 has the spacing spring 11 that is located activity groove 8 inside, the other end of spacing spring 11 and the one end fixed connection of fixed strip 10, the accessible presses the outer hoop body 1 at both ends when needing to clear up the junction of oil pipe 2 and outer hoop body 1, spacing spring 11 just is compressed this moment and drives two outer hoop bodies 1 and be close to relatively, can be with oil pipe 2 and outer hoop body 1 junction clean up through pressing repeatedly and loosening outer hoop body 1.

Wherein, the outer side of the outer hoop body 1 is fixedly sleeved with a heat-insulating layer 14, and the outer side of the heat-insulating layer 14 is fixedly sleeved with a protective layer 15.

Wherein, heat preservation 14 are made for the sponge, and protective layer 15 is made for the linoleum, and heat preservation 14 makes its to have good thermal insulation performance for the sponge and can carry out good heat preservation to the coupling inside and avoid appearing the crack, and protective layer 15 is made for the linoleum, and it has certain toughness and waterproof, avoids the influence of offal to the coupling, strengthens the life of coupling.

The theory of operation, this flat tubing thickening coupling is when using, at first carry out threaded connection through the internal thread 3 of seting up on the internal thread 3 that sets up on oil pipe 2 and the outer hoop body 1, when oil pipe 2 and the outer hoop body 1 threaded connection, the medial surface of two sealed pads 7 received pressure and oil pipe 2's lateral surface full contact this moment, seal it, the outer hoop body 1 at both ends is pressed to the accessible when needs clear up oil pipe 2 and the junction of the outer hoop body 1, spacing spring 11 is just being close to relatively by two outer hoop bodies 1 of compression drive this moment, the cleaning plate 13 that lies in the inner hoop body 9 both ends this moment can clear up oil pipe 2 and the junction of the outer hoop body 1, can clear up oil pipe 2 and the junction of the outer hoop body 1 through pressing repeatedly and loosening outer hoop body 1 and repeat this step.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

1. The utility model provides a flat tubing thickening coupling, includes outer hoop body (1), its characterized in that: the quantity of the outer hoop body (1) is two, two the equipartition angle of one end that the inner chamber of the outer hoop body (1) is close to relatively has seted up movable groove (8), two be equipped with interior hoop body (9) between the outer hoop body (1), the equal angle fixed mounting in lateral surface of interior hoop body (9) has fixed strip (10), interior hoop body (9) are through movable joint between fixed strip (10) and movable groove (8), the equal movable joint in both ends has fixed plate (12) about interior hoop body (9), the quantity of fixed plate (12) is two, two the equal fixed mounting in one end that fixed plate (12) kept away from relatively has clean board (13).

2. The flat tubing thickening coupling of claim 1, wherein: the utility model discloses a spacing groove (6) have been seted up to the impartial angle of medial surface on outer hoop body (1) top, the medial surface of outer hoop body (1) is equipped with sealed pad (7), the quantity of sealed pad (7) is two.

3. The flat tubing thickening coupling of claim 2, wherein: two spacing grooves (6) have been seted up to the lateral surface isogonism of sealed pad (7), sealed pad (7) are through spacing groove (6) and the inside spacing strip (5) activity joint of outer hoop body (1).

4. The flat tubing thickening coupling of claim 1, wherein: external screw thread (4) have been seted up to the medial surface of the outer hoop body (1), the inside of the outer hoop body (1) is equipped with oil pipe (2), internal thread (3) have been seted up to the lateral surface of oil pipe (2), oil pipe (2) are through external screw thread (4) threaded connection of internal thread (3) and outer hoop body (1) medial surface.

5. The flat tubing thickening coupling of claim 5, wherein: the lateral surface of oil pipe (2) contacts with the medial surface of sealed pad (7), the medial surface of oil pipe (2) contacts with the lateral surface of cleaning plate (13).

6. The flat tubing thickening coupling of claim 1, wherein: the left end fixed mounting of activity groove (8) has spacing spring (11) that are located activity groove (8) inside, the other end of spacing spring (11) and the one end fixed connection of fixed strip (10).

7. The flat tubing thickening coupling of claim 1, wherein: the outer side surface of the outer hoop body (1) is fixedly sleeved with a heat insulation layer (14), and the outer side surface of the heat insulation layer (14) is fixedly sleeved with a protective layer (15).

8. The flat tubing thickening coupling of claim 7, wherein: the heat-insulating layer (14) is made of sponge, and the protective layer (15) is made of felt.