CN216692517U

CN216692517U - Air-tight threaded connection pipe joint

Info

Publication number: CN216692517U
Application number: CN202122952357.8U
Authority: CN
Inventors: 陈建
Original assignee: Chongqing Dajian Machinery Co ltd
Current assignee: Chongqing Dajian Machinery Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-07
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a pipe joint with air-tight threaded connection, which relates to the technical field of petroleum pipeline connection and comprises pipelines, wherein a connecting pipe is arranged between the pipelines, the connecting pipe is movably connected with the pipelines, a threaded sleeve is arranged on the surface of the connecting pipe, the threaded sleeve is in threaded connection with the connecting pipe, an upper half ring and a lower half ring are arranged between the threaded sleeves, the upper half ring and the lower half ring are movably connected, fixing plates are fixed on the side surfaces of the upper half ring and the lower half ring, a fixing bolt is arranged between the fixing plates, the fixing bolt is in threaded connection with the fixing plates, when the pipelines are sleeved in the connecting pipe, the connecting pipe is connected with the pipelines through the threaded sleeve, then the upper half ring and the lower half ring are arranged on the surface of the threaded sleeve, and finally the upper half ring and the lower half ring are fixed through the fixing bolt, the design avoids the connection of a plurality of bolts when the pipelines are connected, and facilitates the disassembly and the connection between the pipelines, not only facilitates the fixed connection of the pipelines, but also ensures the transportation safety of the petroleum and the natural gas.

Description

Air-tight threaded connection pipe joint

Technical Field

The utility model relates to the technical field of petroleum pipeline connection, in particular to a pipe joint in air-tight threaded connection.

Background

In the mode of carrying oil and natural gas, it has energy saving and consumption to utilize the oil and natural gas pipeline to carry, the delivery volume is big, transport speed is fast, advantages such as cost of transportation low, be the means commonly used of oil and natural gas's transport, for the leakproofness of guarantee pipeline, often need use pipeline sealing connecting device to carry out sealing connection to the pipeline, when using, oil and natural gas has higher pressure in the pipeline, and then make the sealing member produce the gap because of pressure is too big easily, and then cause oil and natural gas's leakage easily, be unfavorable for the sealing connection of guarantee pipeline, on the other hand, when the connection to the pipeline, it is fixed to need a plurality of bolts to connect, and need screw up a plurality of bolts one by one, be unfavorable for improving safe efficiency.

The patent with the patent number of CN212508129U discloses a pipe joint in air-tight threaded connection, which is characterized by comprising a bottom support, a bottom flange connected with a casing head body through a bolt, a surface casing coupling connector, a metal seal and a flange seal backing ring, wherein the bottom flange is connected with the casing head body through an air-tight internal thread, the bottom flange is connected with the surface casing short section through an air-tight internal thread, and the top extension neck is connected with the casing head body. The utility model has novel structure, simple operation, stable performance and safe and reliable use; the installation direction can be adjusted, field management is convenient, the surface casing connector is reliable in sealing, the surface casing connector can be lowered to a preset position through a drilling blowout preventer, and the gas well connector is suitable for long-term exploitation of a gas-tight threaded connection natural gas well at the bottom of a casing head.

At the in-process of petroleum pipeline connection, adopt a plurality of bolts to fix usually, it is more troublesome to dismantle the connection, and when the bolt appears becoming flexible, causes the disjointing to appear between the pipeline easily, causes petroleum and natural gas's leakage, neither does not benefit to the fixed connection to the pipeline, is unfavorable for the transport safety of guarantee petroleum and natural gas again.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a pipe joint for air-tight threaded connection.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides an airtight threaded connection's coupling, includes the pipeline, be equipped with the connecting pipe between the pipeline, and connecting pipe and pipeline swing joint, the surface of connecting pipe is equipped with the screw sleeve, and screw sleeve and connecting pipe threaded connection, be equipped with semi-ring and lower semi-ring between the screw sleeve, and first semi-ring and lower semi-ring swing joint, the side of last semi-ring and lower semi-ring is fixed with the fixed plate, be equipped with fixing bolt between the fixed plate, and fixing bolt and fixed plate threaded connection.

Preferably, a positioning ring is fixed on the surface of the pipeline, a fixing ring is fixed on the surface of the threaded sleeve, a third sealing ring is fixed inside the threaded sleeve, a first sealing ring is fixed on the inner wall of the connecting pipe, and a second sealing ring is fixed on the inner sides of the upper half ring and the lower half ring.

Preferably, the inner sides of the upper half ring and the lower half ring are provided with fixing grooves, and the fixing grooves are connected with the fixing rings in a clamping manner.

Preferably, a thread ring is fixed on the surface of the connecting pipe, the thread ring is in an axisymmetrical structure relative to the connecting pipe, and the thread ring is in threaded connection with the thread sleeve.

Preferably, the inner diameter of the connecting pipe is equal to the outer diameter of the pipeline, and the inner diameter of the threaded sleeve is equal to the outer diameter of the positioning ring.

Preferably, the first sealing ring, the second sealing ring and the third sealing ring are all formed by thermoplastic rubber.

Advantageous effects

According to the utility model, the connecting pipe is arranged, when the pipeline is sleeved in the connecting pipe, the connecting pipe is connected with the pipeline through the threaded sleeve, the upper half ring and the lower half ring are arranged on the surface of the threaded sleeve, and finally the upper half ring and the lower half ring are fixed through the fixing bolts.

Drawings

FIG. 1 is a view of the connection structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a structural view of a connecting tube of the present invention;

FIG. 4 is a view showing a part of the structure of the apparatus of the present invention.

Illustration of the drawings:

1. a pipeline; 2. a threaded sleeve; 3. a lower half ring; 4. an upper half ring; 5. a fixing ring; 6. a thread ring; 7. a positioning ring; 8. a connecting pipe; 9. a first seal ring; 10. fixing the bolt; 11. fixing grooves; 12. a second seal ring; 13. a fixing plate; 14. and a third seal ring.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-4, an airtight threaded connection pipe joint comprises a pipeline 1, a connecting pipe 8 is arranged between the pipelines 1, the connecting pipe 8 is movably connected with the pipelines 1, a threaded sleeve 2 is arranged on the surface of the connecting pipe 8, the threaded sleeve 2 is in threaded connection with the connecting pipe 8, an upper half ring 4 and a lower half ring 3 are arranged between the threaded sleeves 2, the upper half ring 4 is movably connected with the lower half ring 3, fixing plates 13 are fixed on the side surfaces of the upper half ring 4 and the lower half ring 3, fixing bolts 10 are arranged between the fixing plates 13, and the fixing bolts 10 are in threaded connection with the fixing plates 13.

The surface mounting of pipeline 1 has holding ring 7, and the surface mounting of threaded sleeve 2 has solid fixed ring 5, and the inside of threaded sleeve 2 is fixed with third sealing ring 14, and the inner wall of connecting pipe 8 is fixed with first sealing ring 9, and the inboard of upper half ring 4 and lower half ring 3 is fixed with second sealing ring 12. The inner sides of the upper half ring 4 and the lower half ring 3 are provided with fixing grooves 11, and the fixing grooves 11 are connected with the fixing rings 5 in a clamping mode. The surface of the connecting pipe 8 is fixed with a thread ring 6, the thread ring 6 is in an axial symmetry structure relative to the connecting pipe 8, and the thread ring 6 is in threaded connection with the threaded sleeve 2. The inner diameter of the connecting tube 8 is equal to the outer diameter of the pipe 1 and the inner diameter of the threaded sleeve 2 is equal to the outer diameter of the positioning ring 7. The first sealing ring 9, the second sealing ring 12 and the third sealing ring 14 are all formed by thermoplastic rubber.

The working principle of the utility model is as follows: when the pipeline 1 is connected, firstly, the pipeline 1 is respectively put into a connecting pipe 8 from two ends of the connecting pipe 8, then the threaded sleeve 2 rotates on the surface of the pipeline 1, the threaded sleeve 2 is in threaded connection with the connecting pipe 8 through a threaded ring 6 on the surface of the connecting pipe 8, in the process, the threaded sleeve 2 is determined as a ring for limiting, a first sealing ring 9 in the threaded sleeve 2 realizes the sealing between the threaded sleeve 2 and the pipeline 1, then an upper half ring 4 and a lower half ring 3 are in clamping connection with a fixing groove 11 through a fixing ring 5, the threaded sleeves 2 are tightly connected, finally the upper half ring 4 and the lower half ring 3 are fixed through a fixing bolt 10, the connecting pipe 8 is arranged, when the pipeline 1 is sleeved in the connecting pipe 8, the connecting pipe 8 is connected with the pipeline 1 through the threaded sleeve 2, then the upper half ring 4 and the lower half ring 3 are arranged on the surface of the threaded sleeve 2, last through fixing bolt 10 with last semi-ring 4 and lower semi-ring 3 fixed, this kind of design has avoided using a plurality of bolts to connect when pipeline 1 connects, makes convenient to detach and connect between the pipeline 1, both made things convenient for the fixed connection of pipeline 1, ensured oil and gas's transport safety again.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pipe joint of airtight threaded connection, includes pipeline (1), its characterized in that: be equipped with connecting pipe (8) between pipeline (1), and connecting pipe (8) and pipeline (1) swing joint, the surface of connecting pipe (8) is equipped with threaded sleeve (2), and threaded sleeve (2) and connecting pipe (8) threaded connection, be equipped with semi-ring (4) and lower semi-ring (3) between threaded sleeve (2), and go up semi-ring (4) and lower semi-ring (3) swing joint, the side of going up semi-ring (4) and lower semi-ring (3) is fixed with fixed plate (13), be equipped with fixing bolt (10) between fixed plate (13), and fixing bolt (10) and fixed plate (13) threaded connection.

2. A hermetically sealed threaded connection pipe fitting according to claim 1, characterized in that: the pipeline sealing structure is characterized in that a positioning ring (7) is fixed on the surface of the pipeline (1), a fixing ring (5) is fixed on the surface of the threaded sleeve (2), a third sealing ring (14) is fixed inside the threaded sleeve (2), a first sealing ring (9) is fixed on the inner wall of the connecting pipe (8), and a second sealing ring (12) is fixed on the inner sides of the upper half ring (4) and the lower half ring (3).

3. A hermetically sealed threaded connection pipe fitting according to claim 1, characterized in that: the inner sides of the upper half ring (4) and the lower half ring (3) are provided with fixing grooves (11), and the fixing grooves (11) are connected with the fixing rings (5) in a clamping mode.

4. A hermetically sealed threaded connection pipe fitting according to claim 1, characterized in that: the surface of the connecting pipe (8) is fixed with a thread ring (6), the thread ring (6) is in an axisymmetric structure relative to the connecting pipe (8), and the thread ring (6) is in threaded connection with the threaded sleeve (2).

5. A hermetically sealed threaded connection pipe fitting according to claim 1, characterized in that: the inner diameter of the connecting pipe (8) is equal to the outer diameter of the pipeline (1), and the inner diameter of the threaded sleeve (2) is equal to the outer diameter of the positioning ring (7).

6. A hermetically sealed threaded connection pipe fitting according to claim 2, characterized in that: the first sealing ring (9), the second sealing ring (12) and the third sealing ring (14) are all formed by thermoplastic rubber.