Oil nozzle sleeve pressure relief screwed plug device

Abstract

The invention discloses an oil nozzle sleeve pressure relief screwed plug device which comprises a pressure relief screwed plug and an oil nozzle sleeve plug which are in threaded connection. A first cavity is formed in the center of the pressure relief screwed plug, two pressure relief holes opposite in position are formed in the pressure relief screwed plug, and the first cavity communicates with the pressure relief holes; a second cavity is formed in the center of the oil nozzle sleeve plug, and the pressure relief hole is communicated with the second cavity; according to the oil nozzle sleeve pressure relief screwed plug device, the safety of workers in the operation process is greatly improved, meanwhile, the working efficiency during plug dismounting is improved, and wellhead environment pollution caused by splashing of media in a pipe is reduced; through on-site periodic tests, the sealing performance, the pressure bearing performance and the reliability of the screwed plug can meet on-site production conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of wire plugging, and in particular relates to a nozzle sleeve pressure relief wire plugging device. Background Art

[0002] At present, the nozzle sleeve pressure relief plug in the oil field is a solid body. In the process of removing the plug, it is necessary to slowly loosen it sideways and rely on the gap between the threads to release the pressure in the process, which may easily cause personal injury accidents and splash the medium in the pipe to cause environmental pollution. Summary of the invention

[0003] The purpose of the invention is to provide a nozzle sleeve pressure relief plugging device, which solves the problem of wellhead environmental pollution caused by the spraying of medium in the pipe.

[0004] The technical solution adopted by the present invention includes a pressure relief wire plug and an oil nozzle sleeve plug, which are threadedly connected; a first cavity is opened at the center of the pressure relief wire plug, and two pressure relief holes in opposite positions are opened on the pressure relief wire plug, and the first cavity and the pressure relief hole are connected; a second cavity is opened at the center of the oil nozzle sleeve plug, and the pressure relief hole is connected to the second cavity.

[0005] The present invention is also characterized in that:

[0006] The pressure relief plug includes a hollow base, to which a pressure relief pipe is fixedly connected, and a pressure guiding block is fixedly connected to the free end of the pressure relief pipe; the hollow part of the base is communicated with the inner cavity of the pressure relief pipe, and a thread is arranged on the outer side of the pressure relief pipe near the base, and the pressure relief hole is located between the thread on the pressure relief pipe and the pressure guiding block.

[0007] A round hole is provided at one end of the nozzle sleeve plug, a thread is provided inside the round hole, and the round hole is communicated with the first cavity.

[0008] The diameter of the circular hole is larger than the diameter of the first cavity.

[0009] The pressure guide block is in the shape of a cone.

[0010] The beneficial effects of the present invention are as follows: the oil nozzle sleeve pressure relief wire plug device of the present invention has a simple structure, is easy to use, is suitable for oil, gas and water wells in oil fields, greatly improves the safety of workers during operation, and at the same time improves the work efficiency of operators when removing the plug, and reduces the wellhead environmental pollution caused by splashing of the medium in the pipe; after periodic on-site testing, the sealing performance, pressure bearing performance and reliability of the wire plug can meet on-site production conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the oil nozzle sleeve pressure relief wire plugging device of the present invention.

[0012] In the figure, 1. pressure relief screw plug, 2. oil nozzle sleeve plug, 3. pressure relief hole, 4. second cavity, 5. pressure relief pipe, 6. round hole, 7. pressure guide block, 8. base, 9 first cavity. DETAILED DESCRIPTION

[0013] The present invention is described in detail below with reference to the accompanying drawings.

[0014] The present invention provides a nozzle sleeve pressure relief plugging device, such as Figure 1 As shown, it includes a pressure relief screw plug 1 and an oil nozzle sleeve plug 2, which are threadedly connected; a first cavity 9 is opened in the center of the pressure relief screw plug 1, and two pressure relief holes 3 are opened on the pressure relief screw plug 1 at opposite positions, and the first cavity 9 is connected to the pressure relief hole 3; a second cavity 4 is opened in the center of the oil nozzle sleeve plug 2, and the pressure relief hole 3 is connected to the second cavity 4.

[0015] The pressure relief plug 1 includes a hollow base 8, to which a pressure relief pipe 5 is fixedly connected, and a pressure guiding block 7 is fixedly connected to the free end of the pressure relief pipe 5; the hollow part of the base 8 is communicated with the inner cavity of the pressure relief pipe 5, and a thread is provided on the outer side of the pressure relief pipe 5 near the base 8, and the pressure relief hole 3 is located between the thread on the pressure relief pipe 5 and the pressure guiding block 7.

[0016] A circular hole 6 is formed at one end of the nozzle sleeve plug 2 , a thread is provided inside the circular hole 6 , and the circular hole 6 is communicated with the first cavity 9 .

[0017] The diameter of the circular hole 6 is larger than the diameter of the first cavity 9 .

[0018] The pressure guiding block 7 is in the shape of a cone.

[0019] In normal state, the pressure relief wire plug 1 and the oil nozzle sleeve plug 2 are threadedly sealed and connected, that is, the pressure relief wire plug 1 and the inside of the circular hole 6 are threadedly connected. When the oil nozzle sleeve plug 2 needs to be removed, first slowly loosen the pressure relief wire plug 1 to allow the two relatively positioned pressure relief holes 3 to rotate into the circular hole 6. Because the inner diameter of the circular hole 6 is larger than the diameter of the first cavity 9, the pressure in the oil nozzle sleeve first passes through the surface of the conical pressure guide block 7 to evenly send the pressure to the circular hole 6, and then passes through the two symmetrically positioned pressure relief holes 3, and the pressure in the pipe is slowly discharged from the first cavity 9.

[0020] The shape of the pressure-conducting block 7 can be a uniform object, such as a circular surface or a conical object. After testing, the pressure-conducting block 7 is set to a cone, and the pressure transmission speed and uniform pressure transmission performance are the best.

[0021] Example 1

[0022] The oil nozzle sleeve pressure relief wire plug device of the present invention comprises a pressure relief wire plug 1 and an oil nozzle sleeve plug 2, which are threadedly connected; a first cavity 9 is opened at the center of the pressure relief wire plug 1, and two pressure relief holes 3 located opposite to each other are opened on the pressure relief wire plug 1, and the first cavity 9 is connected to the pressure relief hole 3; a second cavity 4 is opened at the center of the oil nozzle sleeve plug 2, and the pressure relief hole 3 is connected to the second cavity 4.

[0023] Example 2

[0024] The oil nozzle sleeve pressure relief wire plug device of the present invention comprises a pressure relief wire plug 1 and an oil nozzle sleeve plug 2, which are threadedly connected; a first cavity 9 is provided at the center of the pressure relief wire plug 1, and two pressure relief holes 3 are provided on the pressure relief wire plug 1 in opposite positions, and the first cavity 9 is connected with the pressure relief hole 3; a second cavity 4 is provided at the center of the oil nozzle sleeve plug 2, and the pressure relief hole 3 is connected with the second cavity 4; the pressure relief wire plug 1 comprises a hollow base 8, a pressure relief pipe 5 is fixedly connected to the base 8, and a pressure guide block 7 is fixedly connected to the free end of the pressure relief pipe 5; the hollow part of the base 8 is communicated with the inner cavity of the pressure relief pipe 5, and a thread is provided on the outer side of the pressure relief pipe 5 near the base 8, and the pressure relief hole 3 is located between the thread on the pressure relief pipe 5 and the pressure guide block 7.

[0025] Example 3

[0026] The oil nozzle sleeve pressure relief wire plug device of the present invention comprises a pressure relief wire plug 1 and an oil nozzle sleeve plug 2, which are threadedly connected; a first cavity 9 is provided at the center of the pressure relief wire plug 1, and two pressure relief holes 3 are provided on the pressure relief wire plug 1 in opposite positions, and the first cavity 9 is connected to the pressure relief hole 3; a second cavity 4 is provided at the center of the oil nozzle sleeve plug 2, and the pressure relief hole 3 is connected to the second cavity 4; a circular hole 6 is provided at one end of the oil nozzle sleeve plug 2, and a thread is arranged inside the circular hole 6, and the circular hole 6 is connected to the first cavity 9.

Claims

1. The oil nozzle sleeve pressure relief plugging device is characterized by: The invention comprises a pressure relief screw plug (1) and an oil nozzle sleeve plug (2), wherein the pressure relief screw plug (1) and the oil nozzle sleeve plug (2) are threadedly connected; a first cavity (9) is provided at the center of the pressure relief screw plug (1), two pressure relief holes (3) are provided on the pressure relief screw plug (1) at opposite positions, and the first cavity (9) and the pressure relief hole (3) are communicated; a second cavity (4) is provided at the center of the oil nozzle sleeve plug (2), and the pressure relief hole (3) is communicated with the second cavity (4).

2. The nozzle sleeve pressure relief plugging device according to claim 1, characterized in that: The pressure relief plug (1) comprises a hollow base (8), the base (8) is fixedly connected to a pressure relief pipe (5), and the free end of the pressure relief pipe (5) is fixedly connected to a pressure guide block (7); the hollow portion of the base (8) is communicated with the inner cavity of the pressure relief pipe (5), a thread is provided on the outer side surface of the pressure relief pipe (5) near the base (8), and the pressure relief hole (3) is located between the thread on the pressure relief pipe (5) and the pressure guide block (7).

3. The nozzle sleeve pressure relief plugging device according to claim 1, characterized in that: A circular hole (6) is formed at one end of the nozzle sleeve plug (2), a thread is provided inside the circular hole (6), and the circular hole (6) is communicated with the first cavity (9).

4. The nozzle sleeve pressure relief plugging device according to claim 3, characterized in that: The diameter of the circular hole (6) is greater than the diameter of the first cavity (9).

5. The nozzle sleeve pressure relief plugging device according to claim 2, characterized in that: The pressure guiding block (7) is in the shape of a cone.

Images