Rapid plugging tool for oil field pipeline

Abstract

The utility model discloses a quick plugging tool for an oil field pipeline, which comprises an upper joint, an air tap is arranged at the center of the upper joint, a cylindrical outer sleeve is arranged at the right part of the upper joint, a cylindrical push sleeve is arranged in the outer sleeve, a piston is arranged in the push sleeve, and a plug is arranged in the piston. An upper pressing cap, a rubber sleeve, a lower pressing cap and a rubber sleeve seat are arranged on the right end face of the outer sleeve, the rubber sleeve is fixed between the upper pressing cap and the lower pressing cap, and the rubber sleeve seat penetrates through the rubber sleeve. A central pipe is arranged in the center of the piston, and the piston moves along the central pipe. And the rubber sleeve is a telescopic rubber sheet. The rapid plugging tool for the oil field pipeline is easy to operate, does not need to wait for the overflow condition of the pipeline, can directly perform leaking stoppage welding and head making, greatly improves the repairing efficiency of the pipeline, and compared with a traditional valve closing pressure relief welding mode, the rapid plugging tool for the pipeline is faster to operate, lower in risk, higher in efficiency and beneficial to rapid first-aid repair of the pipeline.

Description

Technical Field

[0001] The utility model relates to a pipeline repair tool, more specifically, to an oilfield pipeline rapid blocking tool. Background Art

[0002] During oilfield production and transportation, oil and water injection pipelines can become damaged due to corrosion, ground construction, and other factors, leading to crude oil and wastewater leaks, causing serious environmental pollution and impacting oilfield production. Currently, the emergency repair plan for pipeline damage involves first closing the gates at both ends to release pressure. Once the pipeline is emptied and overflow-free, the damaged area is welded and the fiberglass reinforced plastic header is constructed.

[0003] Production practice has shown that the pressure relief time after a damaged oilfield production pipeline is long. If the pipeline is long, continuous overflow in the pipeline after pressure relief is not conducive to steel pipe welding, especially delaying the construction progress of fiberglass reinforced plastic pipeline joints, affecting the efficiency of emergency repairs. Utility Model Content

[0004] Based on this, it is necessary to provide an oilfield pipeline rapid plugging tool to address the above technical problems.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A tool for quickly plugging oilfield pipelines, characterized in that the tool comprises an upper joint, a gas nozzle is provided in the center of the upper joint, a cylindrical outer sleeve is provided on the right side of the upper joint, a cylindrical push sleeve is provided inside the outer sleeve, a piston is provided inside the push sleeve, an upper pressure cap, a rubber cylinder, a lower pressure cap and a rubber cylinder seat are provided on the right end surface of the outer sleeve, the rubber cylinder is fixed between the upper pressure cap and the lower pressure cap, and the rubber cylinder seat passes through the rubber cylinder.

[0007] As a preferred embodiment of the present invention, a central tube is provided at the center of the piston, and the piston moves along the central tube.

[0008] As a preferred embodiment of the present invention, the rubber tube is a retractable rubber.

[0009] As a preferred embodiment of the present invention, a limiting ring protrusion is provided on the outer wall of the rubber cylinder seat, and the pressing cap abuts against the limiting ring protrusion.

[0010] As a preferred embodiment of the present invention, a fixing ring groove is provided on the outer wall of the upper joint.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The utility model provides a rapid plugging tool for oilfield pipelines. This tool is easy to operate and can be welded and sealed directly without waiting for the pipeline to overflow, greatly improving pipeline repair efficiency. Compared with the traditional valve closing and pressure relief welding method, the pipeline rapid plugging device is faster to operate, has lower risks, and is more efficient, facilitating rapid pipeline repair. In addition, by simply replacing the corresponding rubber cartridge, it can be adapted to pipelines of different diameters, thus having a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic structural diagram of the oilfield pipeline rapid plugging tool of the utility model;

[0015] The markings in the figure are as follows: 1. Air nozzle; 10. Center tube; 2. Upper joint; 3. Outer sleeve; 4. Piston; 5. Push sleeve; 6. Upper pressure cap; 7. Rubber cylinder; 8. Lower pressure cap; 9. Rubber cylinder seat; 91. Limiting ring protrusion. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] like Figure 1 As shown, the oilfield pipeline rapid plugging tool includes an upper joint 2, a gas nozzle 1 is provided in the center of the upper joint 2, a cylindrical outer sleeve 3 is provided on the right side of the upper joint 2, a cylindrical push sleeve 5 is provided inside the outer sleeve 3, a piston 4 is provided inside the push sleeve 5, an upper pressure cap 6, a rubber cylinder 7, a lower pressure cap 8 and a rubber cylinder seat 9 are provided on the right end surface of the outer sleeve 3, the rubber cylinder 7 is fixed between the upper pressure cap 6 and the lower pressure cap 8, and the rubber cylinder seat 9 passes through the rubber cylinder 7.

[0018] A central tube 10 is provided at the center of the piston 4 , and the piston 4 moves along the central tube 10 .

[0019] It should be noted that the rubber tube 7 is a retractable rubber.

[0020] In addition, a limiting ring protrusion 91 is provided on the outer wall of the rubber cylinder seat 9 , and the pressing cap 8 abuts against the limiting ring protrusion 91 .

[0021] A fixing ring groove 21 is provided on the outer wall of the upper joint 2 for fixing the upper joint 2 .

[0022] The following describes how the oilfield pipeline rapid plugging tool works, including the following steps:

[0023] Step S1: When a pipeline is damaged, first close the valve to release the pressure of the damaged section of the pipeline;

[0024] Step S2: cutting the pipe into sections of 500-700 mm at the damaged part of the pipe;

[0025] Step S3: Place the oilfield pipeline rapid plugging tool into the interior of the pipelines at both ends, pressurize and pump air (5-10 kg pressure is sufficient according to the actual situation) to prevent water droplets from overflowing. Then, perform process welding and make the fiberglass pipe head.

[0026] Step S4: cleaning and polishing the outer walls of both ends of the cut pipe;

[0027] Step S5: After completing the welding process at both ends and making the ends, take out the oilfield pipeline quick plugging tool.

[0028] It should be noted that in step S3, the air cylinder is used to inflate to increase the pressure, pushing the piston 4 to move the push sleeve 5 forward, squeezing and deforming the rubber cylinder 7 so that the rubber cylinder surface fully fits the inner wall of the pipe, thereby achieving a sealing effect.

[0029] This oilfield pipeline rapid plugging tool is easy to operate and can be welded and sealed directly without waiting for the pipeline to overflow, greatly improving pipeline repair efficiency. Compared with traditional valve closing and pressure relief welding methods, the pipeline rapid plugging device is faster, less risky, and more efficient, facilitating rapid pipeline repair. In addition, it can be adapted to pipelines of different diameters by simply replacing the corresponding rubber cartridge, giving it a wide range of applications.

[0030] Obviously, the embodiments described above are only part of the embodiments of the present application, rather than all the embodiments. The drawings provide preferred embodiments of the present application, but do not limit the patent scope of the present application.

Claims

1. A rapid plugging tool for oilfield pipelines, characterized in that: The oilfield pipeline rapid plugging tool comprises an upper joint (2), a gas nozzle (1) is provided at the center of the upper joint (2), a cylindrical outer sleeve (3) is provided on the right side of the upper joint (2), a cylindrical push sleeve (5) is provided inside the outer sleeve (3), a piston (4) is provided inside the push sleeve (5), an upper pressure cap (6), a rubber cylinder (7), a lower pressure cap (8) and a rubber cylinder seat (9) are provided on the right end surface of the outer sleeve (3), the rubber cylinder (7) is fixed between the upper pressure cap (6) and the lower pressure cap (8), and the rubber cylinder seat (9) passes through the rubber cylinder (7).

2. The oilfield pipeline rapid plugging tool according to claim 1, characterized in that: A central tube (10) is provided at the center of the piston (4), and the piston (4) moves along the central tube (10).

3. The oilfield pipeline rapid plugging tool according to claim 1, characterized in that: The rubber cylinder (7) is a retractable rubber.

4. The oilfield pipeline rapid plugging tool according to claim 1, characterized in that: A limiting ring protrusion (91) is provided on the outer wall of the rubber cylinder seat (9), and the pressing cap (8) abuts against the limiting ring protrusion (91).

5. The oilfield pipeline rapid plugging tool according to claim 1, characterized in that: A fixing ring groove (21) is provided on the outer wall of the upper joint (2).

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