Pressure leaking stoppage device for compressed gas pipeline

Abstract

The utility model discloses a compressed gas pipeline under-pressure leaking stoppage device, which relates to the technical field of compressed gas pipelines and comprises a first semi-cylinder and a second semi-cylinder, cavities are formed in the first semi-cylinder and the second semi-cylinder, and through holes are formed in the upper side and the lower side of the first semi-cylinder and the upper side and the lower side of the second semi-cylinder. During leaking stoppage, the first semi-cylinder and the second semi-cylinder are welded to a leaked compressed gas pipeline. After the first semi-cylinder, the second semi-cylinder, the circular plate, the threaded connector and the isolating valve are welded, complete under-pressure leaking stoppage of a compressed gas leaking pipeline can be achieved, further damage to the leaking pipeline due to possible misoperation of personnel is avoided, and the whole device is high in flexibility and convenient to use. The diameter and the length of the pipeline of the device can be correspondingly adjusted according to different sizes of compressed gas leakage pipelines and different lengths of corrosion leakage parts, and a plurality of leakage points and seriously corroded pipe sections can be covered.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressed gas pipelines, and in particular relates to a compressed gas pipeline under pressure leak plugging device. Background Art

[0002] Compressed gas is mainly delivered to downstream users through compressed gas pipelines. Compressed gas pipelines vary in size, and are made of a variety of materials and pressure ratings. Affected by many factors such as service life, use environment, gas pressure, external damage, etc., compressed gas pipelines will gradually age, corrode, crack, and perforate, which may lead to pipeline leakage, and in turn cause a series of unpredictable production safety accidents. Therefore, when a compressed gas pipeline leaks, if the leaking pipeline can be isolated and depressurized, the leaking pipeline should be welded or replaced after the pressure relief. If the leaking pipeline cannot be isolated and depressurized, the platform's treatment method is to use rubber, clamps, winding tape and other plugging materials and tools to forcibly plug the leak point.

[0003] According to the publication number: CN217056828U, a pipeline pressure plugging device is disclosed, including a pipeline, and also including an upper blocking nose and a lower blocking nose which are symmetrically arranged on the outer side of the pipeline; the upper blocking nose and the lower blocking nose are fixedly connected; a blocking plate is arranged inside the upper blocking nose, and a placement groove is opened at the bottom of the blocking plate, a sealing ring is placed inside the placement groove, an exhaust pipe is fixedly connected to the blocking plate, and the exhaust pipe slides through the upper blocking nose, and a stop valve is fixedly installed at the position where the exhaust pipe passes through the upper blocking nose, and a pressure rod is equidistantly threaded on the outer circumference of the upper blocking nose, and one end of the pressure rod slides through the upper blocking nose and is rotatably connected to the blocking plate, and by rotating the pressure rod, each pressure rod drives the blocking plate to form a seal on the leaking point, and the gas leaked from the leaking point is discharged through the exhaust pipe. When the connection is completed, the stop valve is closed to form a seal for the entire device, so that the leaking point of the pipeline cannot continue to leak gas.

[0004] It can be seen that the leak-plugging devices in the prior art have some disadvantages: the leak cannot be completely plugged and a small amount of gas will continue to leak out; the clamp needs to be continuously tightened during the plugging process, which may cause the leak point to further expand due to improper operation by personnel; compressed gas will damage soft sealing materials such as rubber and winding tape, resulting in the plugging effect not lasting long, and the leakage volume will often gradually expand, and eventually it will have to be disassembled again and the plugging work will be carried out again. Utility Model Content

[0005] The utility model aims to provide a compressed gas pipeline pressure plugging device to solve the technical problem that the compressed gas will damage the soft sealing materials such as rubber and winding tape, resulting in the plugging effect not lasting long, the leakage volume tends to gradually increase, and finally the plugging work has to be disassembled again.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a compressed gas pipeline pressure plugging device, including semi-cylinder one and semi-cylinder two, the semi-cylinder one and semi-cylinder two are both provided with cavities, and the upper and lower sides of the semi-cylinder one and semi-cylinder two are both provided with through holes. When plugging the leak, the semi-cylinder one and semi-cylinder two are welded to the leaking compressed gas pipeline, and a pressure relief port is opened on one side of the semi-cylinder one, and a threaded connector is installed on one side of the pressure relief port, and an isolation valve is connected to the inner thread of the threaded connector, and the isolation valve is in an open state when the semi-cylinder one and semi-cylinder two are welded.

[0007] Preferably, circular plates with through slots are welded at the through holes on the upper and lower sides.

[0008] Preferably, one end of the isolation valve is sealed by a plugging cap.

[0009] Preferably, the size of the through hole is adapted to the size of the compressed gas pipeline.

[0010] Preferably, the lengths of the semi-cylinder one and the semi-cylinder two are consistent with the length of the compressed gas leakage pipeline that needs to be replaced.

[0011] Preferably, the semi-cylinder one, the semi-cylinder two and the circular plate are all made of carbon steel.

[0012] Preferably, one side of semi-cylinder one and semi-cylinder two are both installed with screws, and a fixing plate one is movably installed on the two screws respectively, and one side of the fixing plate one is movably connected with a fixing plate two, and the two fixing plates two are fixed to semi-cylinder one and semi-cylinder two after being fitted together.

[0013] Preferably, one end of the screw is threadedly connected with a nut 2.

[0014] Preferably, the two fixing plates 2 are fixed by bolts, and one end of the bolt is threadedly connected with a nut 1.

[0015] Preferably, the fixing plate 1 and the fixing plate 2 are in an arc-shaped structure, and the fixing plate 1 and the fixing plate 2 are rotatably connected via a pin shaft.

[0016] The utility model of a compressed gas pipeline under pressure plugging device has the following advantages:

[0017] 1. This compressed gas pipeline pressure plugging device, after the semi-cylinder 1, the semi-cylinder 2, the circular plate, the threaded connector and the isolation valve are welded, can achieve complete pressure plugging of the compressed gas leakage pipeline, and there will be no further damage to the leakage pipeline due to improper operation of personnel. Carbon steel is used as the material, which has high strength and reliability. The original leakage pipeline is not damaged during welding. After the leak is successfully plugged, it can be maintained for a long time until the site has the conditions to directly replace the leakage pipeline after isolation and pressure relief. The whole device is highly flexible. According to the different sizes of the compressed gas leakage pipeline and the different lengths of the corroded leakage part, the pipeline diameter and length of the invention device can be adjusted accordingly, which can cover multiple leakage points and severely corroded pipe sections and has a wide range of applications.

[0018] 2. This compressed gas pipeline pressure plugging device fixes semi-cylinder one and semi-cylinder two by fixing plate one and fixing plate two, which effectively improves the stability of fixing plate one and fixing plate two during welding. At the same time, it can be adjusted according to the welding position without affecting the welding operation, and can still be fixed on fixing plate one and fixing plate two after welding, thereby improving the tightness of fixing plate one and fixing plate two. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 It is a top view schematic diagram of the semi-cylinder 1 and the semi-cylinder 2 structures of the utility model;

[0023] Figure 4 It is a schematic diagram of the disassembly of the circular plate, the first semi-cylinder and the second semi-cylinder structure of the utility model;

[0024] Figure 5 It is a schematic plan view of a semi-cylindrical structure of the utility model;

[0025] Figure 6 This is a schematic diagram of the disassembly of the fixing plate 1 and the screw structure of the utility model;

[0026] Figure 7This is a schematic diagram of the rotating state of the second structure of the fixed plate of the utility model;

[0027] Figure 8 It is a schematic diagram of the structural disassembly of the fixing plate 1 and the fixing plate 2 of the utility model.

[0028] Explanation of markings in the figure: 1. Semi-cylinder one; 2. Semi-cylinder two; 3. Through hole; 4. Pressure relief port; 5. Round plate; 6. Threaded connector; 7. Isolation valve; 8. Plug cap; 9. Screw; 10. Fixing plate one; 11. Fixing plate two; 12. Bolt; 13. Nut one; 14. Nut two; 15. Pin. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a compressed gas pipeline pressure plugging device of the utility model in conjunction with the accompanying drawings.

[0035] Embodiment 1

[0036] like Figure 1-Figure 8 As shown, a compressed gas pipeline pressure plugging device of the utility model comprises a semi-cylinder 1 and a semi-cylinder 2, wherein cavities are provided inside the semi-cylinder 1 and the semi-cylinder 2, and through holes 3 are provided on the upper and lower sides of the semi-cylinder 1 and the semi-cylinder 2, and the size of the through hole 3 is adapted to the size of the compressed gas pipeline.

[0037] In the actual use of compressed gas pipeline pressure plugging on site, it is necessary to weld the two-part structure of semi-cylinder 1 and semi-cylinder 2 to complete the isolation and closure of the leak point, and open a pressure relief port 4 on one side of the semi-cylinder 1. The aperture size of the pressure relief port 4 should be basically consistent with the outer diameter size of the threaded connector 6 to be used, and can be as large as possible, but not too small. If it is too small, it will affect the pressure relief effect. A threaded connector 6 is installed on one side of the pressure relief port 4. Before welding, it is also necessary to install an isolation valve 7 at the outlet end of the threaded connector 6. During pressure welding, the isolation valve 7 is opened to release the pressure to keep the inside of the device in a low pressure state for easy welding. After welding, the isolation valve 7 is closed to prevent continuous leakage, and the discharge port is blocked with a plugging cap 8.

[0038] Among them, the appropriate pipeline size to be used as the plugging device must be selected according to the size of the leaking compressed gas pipeline. Under low pressure, generally a larger size can be selected. For example, if the leaking compressed gas pipeline is 1 inch, the pipeline selected as the plugging device can be 2 inches or larger. It is selected according to the actual situation of the compressed gas pressure on site and the existing pipeline materials. A cutting machine is used to cut out the required cylindrical pipeline length and two circular plates 5. After a through hole 3 is opened at the upper and lower ends of the cylinder by a bench drill, the cutting machine is used to mark and cut along the center of the cylinder to form a semi-cylinder 1 and a semi-cylinder 2 2. The pipeline lengths of the semi-cylinder 1 and the semi-cylinder 2 2 must be consistent with the length of the leaking pipeline to be replaced, and the diameter of the circular plate 5 must be basically consistent with the outer diameter of the semi-cylinder 1 and the semi-cylinder 2 2 pipelines.

[0039] Use a bench drill to drill holes in the centers of the two circular plates 5 to ensure that the diameter of the hole is basically the same as or slightly larger than the outer diameter of the leaking pipeline, and fully weld the two circular plates 5 after drilling to the openings at both ends of the pipeline after drilling to ensure that the circular plates 5 can cover the openings at both ends of the semi-cylinder 1 and semi-cylinder 2 pipelines after welding to prevent air leakage, and then fully weld the threaded connector 6 to the opening of the semi-cylinder 1 pipeline to ensure that the leaked compressed air is discharged from the outlet of the threaded connector 6.

[0040] In addition, semi-cylinder 1, semi-cylinder 2 and circular plate 5 are all made of carbon steel, which has high strength and reliability. It does not damage the original leaking pipeline during welding. After the leak is successfully plugged, it can be maintained for a long time until the site has the conditions to directly replace the leaking pipeline after isolation and pressure relief.

[0041] like Figure 1 As shown, screw rods 9 are installed on one side of the semi-cylinder 1 and the semi-cylinder 2, and fixing plates 10 are movably installed on the two screw rods 9. One side of the fixing plate 10 is movably connected with a fixing plate 2 11. After the two fixing plates 2 11 are fitted together, the semi-cylinder 1 and the semi-cylinder 2 are fixed to improve the stability of the semi-cylinder 1 and the semi-cylinder 2. The fixing plate 10 can slide and rotate on the screw rod 9, so the fixing plate 10 can be fixed by using a nut 2 14 threadedly connected with the screw rod 9.

[0042] At the same time, when the two fixing plates 11 are fitted together, the two fixing plates 11 are fixed by means of the bolts 12 and the nuts 13 threadedly connected at one end of the bolts 12 .

[0043] In addition, the fixing plate 10 and the fixing plate 2 11 are in an arc-shaped structure, which can better fix the semi-cylinder 1 1 and the semi-cylinder 2 2 of the cylinder.

[0044] The fixing plate 10 and the fixing plate 2 11 are rotatably connected by the pin 15. Therefore, after the semi-cylinder 1 and the semi-cylinder 2 are welded on one side, the fixing plate 2 11 can be rotated to the side of the fixing plate 2 11, as shown in FIG. Figure 7 As shown, at this time, the fixing plate 10 and the fixing plate 2 11 can be rotated to the other side of the semi-cylinder 1 1 and the semi-cylinder 2 2 to fix the other side, thereby facilitating the welding of the unwelded side of the semi-cylinder 1 1 and the semi-cylinder 2 2 .

[0045] The working principle of a compressed gas pipeline pressure plugging device is as follows: the leaking compressed gas pipeline is wrapped with a semi-cylinder 1 and a semi-cylinder 2, and the isolation valve 7 is opened at the same time to keep the inner cavity of the semi-cylinder 1 and the semi-cylinder 2 at a low pressure, and the two fixing plates 11 are fixed by bolts 12 to fix the fixing plate 11 and the fixing plate 10, so that it is convenient to weld the exposed side of the semi-cylinder 1 and the semi-cylinder 2, and after welding, the fixing plate 11 and the fixing plate 10 can be rotated to the other side for fixing, so as to facilitate the welding of the other side of the semi-cylinder 1 and the semi-cylinder 2.

[0046] Embodiment 2

[0047] When welding is completed, the fixing plate 1 10 and the fixing plate 2 11 can continue to fix the semi-cylinder 1 1 and the semi-cylinder 2 2 , and further maintain the tightness and stability of the semi-cylinder 1 1 and the semi-cylinder 2 2 after welding.

[0048] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A compressed gas pipeline leak plugging device under pressure, comprising a semi-cylinder 1 (1) and a semi-cylinder 2 (2), characterized in that: The semi-cylinder one (1) and the semi-cylinder two (2) are both provided with cavities inside, and the semi-cylinder one (1) and the semi-cylinder two (2) are both provided with through holes (3) on the upper and lower sides. When plugging the leak, the semi-cylinder one (1) and the semi-cylinder two (2) are welded to the leaking compressed gas pipeline, and a pressure relief port (4) is provided on one side of the semi-cylinder one (1). A threaded connector (6) is installed on one side of the pressure relief port (4), and an isolation valve (7) is connected to the inner thread of the threaded connector (6). The isolation valve (7) is in an open state when the semi-cylinder one (1) and the semi-cylinder two (2) are welded.

2. The compressed gas pipeline under pressure plugging device according to claim 1 is characterized in that: Circular plates (5) with through grooves are welded to the through holes (3) on both the upper and lower sides.

3. The compressed gas pipeline under pressure plugging device according to claim 2 is characterized in that: One end of the isolation valve (7) is sealed by a plug cap (8).

4. The compressed gas pipeline under pressure plugging device according to claim 3 is characterized in that: The size of the through hole (3) is adapted to the size of the compressed gas pipeline.

5. The compressed gas pipeline under pressure plugging device according to claim 4 is characterized in that: The lengths of the semi-cylinder one (1) and the semi-cylinder two (2) are consistent with the length of the compressed gas leakage pipeline that needs to be replaced.

6. The compressed gas pipeline under pressure plugging device according to claim 5 is characterized in that: The semi-cylinder one (1), the semi-cylinder two (2) and the circular plate (5) are all made of carbon steel.

7. The compressed gas pipeline under pressure plugging device according to claim 1 is characterized in that: One side of the semi-cylinder one (1) and the semi-cylinder two (2) is equipped with a screw rod (9), and a fixing plate one (10) is movably installed on each of the two screw rods (9). One side of the fixing plate one (10) is movably connected with a fixing plate two (11), and the two fixing plates two (11) are fitted together to fix the semi-cylinder one (1) and the semi-cylinder two (2).

8. The compressed gas pipeline under pressure plugging device according to claim 7 is characterized in that: One end of the screw rod (9) is threadedly connected to a second nut (14).

9. The compressed gas pipeline under pressure plugging device according to claim 8 is characterized in that: The two fixing plates (11) are fixed by bolts (12), and one end of the bolts (12) is threadedly connected with a nut (13).

10. The compressed gas pipeline under pressure plugging device according to claim 9, characterized in that: The fixing plate 1 (10) and the fixing plate 2 (11) are arc-shaped structures, and the fixing plate 1 (10) and the fixing plate 2 (11) are rotatably connected via a pin shaft (15).

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