Pipeline sealing head for oil exploitation

Abstract

The utility model discloses a pipeline sealing head for oil exploitation, which belongs to the technical field of pipeline joints and comprises a sealing joint and a connecting component, the sealing joint is abutted between two connecting pipes, the end of each connecting pipe is provided with a connecting flange, the connecting flange is provided with a plurality of first connecting holes distributed annularly, and the connecting component is provided with a plurality of second connecting holes distributed annularly. A plurality of annularly-distributed second connecting holes are formed in the two end faces of the sealing joint correspondingly, the connecting assembly comprises a connecting block, a connecting rod, a spring and a locking block, inserting grooves are formed in the two sides of the connecting block correspondingly, and the connecting rod sequentially penetrates through the first connecting holes and the second connecting holes and extends into the inserting grooves; a locking groove is formed in the end, located in the inserting groove, of the connecting rod, the spring abuts against the side, away from an opening of the groove, of the connecting block, and the locking block is arranged on the side wall, close to the spring, of the inserting groove. By arranging the connecting assembly, connection of the sealing joint is facilitated, and time and labor are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline joints, and in particular relates to a pipeline sealing head used for petroleum exploitation. Background Art

[0002] Sealing joints are used to connect two pipe heads. Leaving a head means that the pipe is temporarily built at this position, leaving a pipe mouth for the next construction to prevent insufficient use. Patching is to repair and seal the connected pipe heads. Pipelines are devices connected by pipes, pipe connectors and valves for conveying gas, liquid or fluid with solid particles.

[0003] In oil production and transportation pipelines, conventional pipelines are generally connected by welding or screwing. For example, a Chinese patent with an existing announcement number of CN215721495U discloses a pipeline sealing head for oil production, including a first sealing joint and a second sealing joint. The first sealing joint and the second sealing joint are both provided with connecting grooves corresponding to the connecting pipes. A sealing block is provided at one end of the first sealing joint away from the connecting groove. The sealing block is arranged around the first sealing joint. The cross-section of the sealing block is trapezoidal. A sealing groove corresponding to the sealing block is provided at one end of the second sealing joint away from the connecting groove. A plurality of reinforcing bolts are provided on the outer sides of the connecting groove and the sealing groove. A fixing block is provided around the outer sides of the first sealing joint and the second sealing joint. A plurality of fixing holes are provided on the fixing block. Fixing bolts are provided in the fixing holes.

[0004] With respect to the above-mentioned related technologies, the inventors have found that there are at least the following problems in the technology: the sealing joint is connected with a large number of fixing bolts. When connecting or disassembling, it is necessary to use matching tools such as wrenches or screwdrivers to repeatedly turn the fixing bolts, which is very troublesome, time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of the utility model is to provide a pipeline sealing head for oil production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline sealing head for oil extraction, comprising a sealing joint and a connecting assembly, wherein the sealing joint abuts between two connecting pipes, the ends of the connecting pipes are provided with connecting flanges, the connecting flanges are provided with a plurality of annularly distributed first connecting holes, and both end surfaces of the sealing joint are provided with a plurality of annularly distributed second connecting holes;

[0007] The connecting assembly includes a connecting block, a connecting rod, a spring and a locking block. A plurality of grooves corresponding to the second connecting hole are provided on the outer peripheral surface of the sealing joint. The connecting block is slidably installed in the groove. Insertion grooves are provided on both sides of the connecting block. The connecting rod passes through the first connecting hole and the second connecting hole in sequence and extends into the insertion groove. A locking groove is provided at one end of the connecting rod located in the insertion groove. The spring abuts against a side of the connecting block away from the groove opening. The locking block is arranged on the side wall of the insertion groove close to the spring.

[0008] As a preferred embodiment, the end of the connecting rod is provided with a limiting boss abutting against the connecting flange.

[0009] As a preferred implementation, the locking block is provided with an inclined surface in a direction toward the opening of the insertion slot.

[0010] As a preferred implementation, a limiting groove is provided on the side wall of the groove, and the two ends of the connecting block slide in the limiting groove.

[0011] As a preferred implementation, a first sealing ring is abutted between the connecting pipe and the sealing joint.

[0012] As a preferred implementation, a second sealing ring is abutted between the connecting flange and the sealing joint.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The pipeline sealing head for oil production is provided with a connection assembly. It only needs to insert the connecting rod into the insertion groove along the first connecting hole and the second connecting hole. When the limiting boss abuts against the connecting flange, the locking groove is aligned with the locking block. Under the action of the spring, the connecting block drives the locking block to be inserted into the locking groove, and the connecting rod is locked, so that the connection of the sealing joint is completed. When disassembling, it only needs to press the connecting block to move the locking block out of the locking groove, and the connecting rod can be pulled out without the aid of supporting tools such as a wrench or a screwdriver, so that the connection of the sealing joint is convenient, saving time and effort.

[0015] The pipeline sealing head used for oil extraction can enhance the sealing performance between the connecting pipe and the sealing joint by arranging the first sealing ring and the second sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the sealing joint of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the sealing joint of the utility model;

[0019] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0020] In the figure: 1, sealing joint; 11, second connecting hole; 12, groove; 13, limiting groove; 14, first sealing ring; 15, second sealing ring; 2, connecting pipe; 21, connecting flange; 22, first connecting hole; 3, connecting assembly; 31, connecting block; 32, connecting rod; 321, limiting boss; 33, spring; 34, locking block; 35, insertion slot; 36, locking slot. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with embodiments.

[0022] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] See also Figure 1-4 The utility model provides a pipeline sealing head for oil extraction, including a sealing joint 1 and a connecting assembly 3. The sealing joint 1 is abutted between two connecting pipes 2. The ends of the connecting pipes 2 are provided with connecting flanges 21. The connecting flanges 21 are provided with a plurality of first connecting holes 22 distributed in an annular manner. Both end surfaces of the sealing joint 1 are provided with a plurality of second connecting holes 11 distributed in an annular manner. By setting the sealing joint 1, when connecting, the connecting flanges 21 of the connecting pipes 2 can be abutted against the two ends of the sealing joint 1, and the first connecting holes 22 and the second connecting holes 11 are aligned one by one.

[0024] Reference Figure 2 , Figure 3 and Figure 4The connection assembly 3 includes a connection block 31, a connection rod 32, a spring 33 and a locking block 34. A plurality of grooves 12 corresponding to the second connection hole 11 are provided on the outer circumferential surface of the sealing joint 1. The connection block 31 is slidably installed in the groove 12. Insertion grooves 35 are provided on both sides of the connection block 31. The connection rod 32 sequentially penetrates the first connection hole 22 and the second connection hole 11 and extends into the insertion groove 35. A limiting boss 321 abutting against the connecting flange 21 is provided at the end of the connection rod 32. A locking groove 36 is provided at one end of the connection rod 32 located in the insertion groove 35. The spring 33 abuts against the side of the connection block 31 away from the opening of the groove 12. The locking block 34 is provided on the side wall of the insertion groove 35 close to the spring 33. The locking block 34 is provided with an inclined surface in the direction of the opening of the insertion slot 35. By setting the connecting component 3, it is only necessary to insert the connecting rod 32 into the insertion slot 35 along the first connecting hole 22 and the second connecting hole 11. When the limiting boss 321 abuts against the connecting flange 21, the locking slot 36 is aligned with the locking block 34. Under the action of the spring 33, the connecting block 31 drives the locking block 34 to be inserted into the locking slot 36, and the connecting rod 32 is locked to complete the connection of the sealing joint 1. When disassembling, it is only necessary to press the connecting block 31 and move the locking block 34 out of the locking slot 36 to pull out the connecting rod 32. There is no need to use supporting tools such as a wrench or a screwdriver, which facilitates the connection of the sealing joint 1 and saves time and effort.

[0025] Furthermore, a limiting groove 13 is provided on the side wall of the groove 12 , and both ends of the connecting block 31 slide in the limiting groove 13 . By providing the limiting groove 13 , a limiting effect can be achieved on the connecting block 31 .

[0026] Reference Figure 2 and Figure 3 A first sealing ring 14 is abutted between the connecting pipe 2 and the sealing joint 1, and a second sealing ring 15 is abutted between the connecting flange 21 and the sealing joint 1. By providing the first sealing ring 14 and the second sealing ring 15, the sealing between the connecting pipe 2 and the sealing joint 1 can be strengthened.

[0027] The working principle and use process of the utility model are as follows: first, when connecting, the connecting flange 21 of the connecting pipe 2 can be abutted against the two ends of the sealing joint 1, and the first connecting hole 22 and the second connecting hole 11 are aligned one by one, and then, it is only necessary to insert the connecting rod 32 into the insertion groove 35 along the first connecting hole 22 and the second connecting hole 11. When the limiting boss 321 abuts against the connecting flange 21, the locking groove 36 is just aligned with the locking block 34. Under the action of the spring 33, the connecting block 31 drives the locking block 34 to be inserted into the locking groove 36, and the connecting rod 32 is locked, and the connection of the sealing joint 1 can be completed. When disassembling, it is only necessary to press the connecting block 31 and move the locking block 34 out of the locking groove 36 to pull out the connecting rod 32. There is no need to use supporting tools such as a wrench or a screwdriver, which facilitates the connection of the sealing joint 1 and saves time and effort.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline sealing head for oil production, comprising a sealing joint (1) and a connecting assembly (3), characterized in that: The sealing joint (1) is abutted between two connecting pipes (2), the ends of the connecting pipes (2) are provided with connecting flanges (21), the connecting flanges (21) are provided with a plurality of first connecting holes (22) distributed in an annular manner, and both end surfaces of the sealing joint (1) are provided with a plurality of second connecting holes (11) distributed in an annular manner; The connection assembly (3) comprises a connection block (31), a connection rod (32), a spring (33) and a locking block (34); a plurality of grooves (12) corresponding to the second connection hole (11) are provided on the outer peripheral surface of the sealing joint (1); the connection block (31) is slidably installed in the groove (12); insertion grooves (35) are provided on both sides of the connection block (31); the connection rod (32) passes through the first connection hole (22) and the second connection hole (11) in sequence and extends into the insertion groove (35); a locking groove (36) is provided at one end of the connection rod (32) located in the insertion groove (35); the spring (33) abuts against a side of the connection block (31) away from the opening of the groove (12); and the locking block (34) is arranged on a side wall of the insertion groove (35) close to the spring (33).

2. The pipeline sealing head for oil production according to claim 1, characterized in that: The end of the connecting rod (32) is provided with a limiting boss (321) abutting against the connecting flange (21).

3. The pipeline sealing head for oil production according to claim 1, characterized in that: The locking block (34) is provided with an inclined surface in a direction toward the opening of the insertion slot (35).

4. The pipeline sealing head for oil production according to claim 1, characterized in that: A limiting groove (13) is provided on the side wall of the groove (12), and two ends of the connecting block (31) slide in the limiting groove (13).

5. The pipeline sealing head for oil production according to claim 1, characterized in that: A first sealing ring (14) is abutted between the connecting pipe (2) and the sealing joint (1).

6. The pipeline sealing head for oil production according to claim 1, characterized in that: A second sealing ring (15) is abutted between the connecting flange (21) and the sealing joint (1).

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