High-pressure small-pipe-diameter non-stop plugging equipment

Abstract

The utility model discloses high-pressure small-pipe-diameter non-stop plugging equipment, which belongs to the technical field of pipelines, comprises a welding four-way piece welded on a pipeline and an inner leakage valve arranged on the pipeline, and is characterized in that the welding four-way piece is horizontally divided into a connecting section and a plugging section along the axis of the welding four-way piece; the connecting section comprises a first half-section pipe fitting and a high-pressure flange communicated with the first half-section pipe fitting, a locking pin hole into which a locking pin is inserted is additionally formed in the side face of the high-pressure flange, the plugging section comprises a second half-section pipe fitting and a plug communicated with the second half-section pipe fitting, and the diameter of the plugging steel bar corresponds to that of the plug. A sealing groove is formed in the plugging steel bar, a sealing ring is additionally arranged in the sealing groove, the sealing ring is tightly attached to the high-pressure flange, one end of the valve is connected with the high-pressure flange, the other end of the valve is connected with the plugging combiner, and the plugging combiner is used for being connected with tapping equipment or a plugging machine. The method is mainly applied to pipeline valve leakage plugging.

Description

Technical Field

[0001] The invention belongs to the technical field of pipelines, and in particular relates to a high-pressure small-diameter pipe plugging device without stopping the machine. Background Art

[0002] In the petrochemical industry, if the valve has internal leakage in the high-pressure, high-temperature, small-diameter pipeline, the material cannot be cut off. Especially when the pressure levels of the front and rear pipelines are different, low-pressure materials must be provided after decompression. The increase in internal leakage will cause overpressure in the rear system, and in severe cases, it will lead to serious consequences such as rupture of the rear system pipeline.

[0003] At present, there are two technologies for plugging under pressure without stopping the vehicle: the first is to inject glue or steel balls or other fillers into the holes. This technology is only suitable for valves with small leakage areas and low flow rates; the second is to inject glue after clamping the pipe. First of all, the clamped pipe cannot be repaired later and can only be replaced when the vehicle is stopped. In addition, the high-pressure, high-temperature and small-diameter pipes have thick walls and high temperatures, and the simulation conditions for the test are not available, which makes the clamping process more dangerous. Once the pipe ruptures, the entire line must be stopped urgently. In addition, due to the curvature radius problem, the clamping technology requires a long straight pipe section, which cannot be met in some actual situations on site. The third is to replace the internal leaking valve after plugging with a plugger. This technology has certain requirements for the pipe diameter and internal pressure. It cannot be plugged for high-pressure small-diameter pipes, and this plugging is temporary and must be removed after replacing the valve, which leads to complicated procedures and high costs. Summary of the invention

[0004] Purpose of the invention: The purpose of the invention is to provide a high-pressure small-diameter pipe plugging device without stopping the machine to solve the technical problem of leakage of high-pressure small-diameter pipeline valves.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A high-pressure small-diameter non-stop plugging device, comprising a welding four-way piece welded on a pipeline, and an internal leakage valve on the pipeline, characterized in that it includes:

[0006] The welding four-way piece is horizontally divided into a connecting section and a blocking section along the axis of the welding four-way piece;

[0007] A connecting section, the connecting section comprising a first half-cut pipe and a high-pressure flange connected to the first half-cut pipe, a locking pin hole for inserting a locking pin being provided on a side of the high-pressure flange;

[0008] A plugging section, the plugging section comprising a second half-split pipe and a plug connected to the second half-split pipe;

[0009] A plugging steel rod, the diameter of which corresponds to that of the plug, a sealing groove is provided in the plugging steel rod and a sealing ring is installed in the sealing groove, and the sealing ring fits tightly against the high-pressure flange;

[0010] A valve, one end of which is connected to a high-pressure flange, and the other end of which is connected to a plugging connector.

[0011] A plugging connector is used to connect a hole opening device or a plugging machine.

[0012] In one solution of the utility model, the interface and horizontal surface of the welding four-way piece are both grooved.

[0013] In one solution of the utility model, a nut and a glue injection valve connected to the nut are welded on the pipeline, and the glue injection valve is used to connect to a pneumatic drill or a glue injection gun.

[0014] Compared with the prior art, the present invention has the following advantages: by adopting a plugging steel rod, the technical difficulty of plugging a leaking high-pressure small-diameter pipeline valve is reduced, and the sealing of the pipeline is improved by the combined use of the plugging steel rod and glue injection, and the present invention has good applicability and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the opening structure diagram of the utility model;

[0016] Figure 2 This is a diagram of the plugging structure of the utility model;

[0017] Figure 3 This is a structural diagram of a four-way piece of the utility model;

[0018] Figure 4 This is a locking diagram of the plugging steel rod of the utility model. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In one embodiment of the utility model, a high-pressure small-diameter non-stop plugging device includes a welding spool piece 2 welded on a pipeline 1, and an internal leakage valve 3 is provided on the pipeline 1, characterized in that it includes:

[0022] The welding spool piece 2 is horizontally divided into a connecting section and a blocking section along the axis of the welding spool piece 2;

[0023] A connecting section, the connecting section comprises a first half-cut pipe member 4 and a high-pressure flange 5 connected to the first half-cut pipe member 4, and a locking pin hole 7 for inserting a locking pin 6 is provided on a side of the high-pressure flange 5;

[0024] A plugging section, the plugging section comprising a second half-cut pipe member 8 and a plug 9 connected to the second half-cut pipe member 8;

[0025] A plugging steel rod 10, wherein the diameter of the plugging steel rod 10 corresponds to the plug 9, a sealing groove 11 is provided in the plugging steel rod 10 and a sealing ring 12 is installed in the sealing groove 11, and the sealing ring 12 is tightly fitted to the high-pressure flange 5;

[0026] The valve 13 has one end connected to the high pressure flange 5 and the other end connected to the plugging connector 14.

[0027] A plugging connector 14, which is used to connect a hole-opening device 15 or a plugging machine 16;

[0028] The interface and horizontal surface of the welding four-way piece 2 are both grooved.

[0029] By adopting the above technical scheme, the wall thickness and ovality of the pipeline 1 need to be measured before use. After the measurement, the four-way piece 2 is welded after the welding conditions are met, the first half-section pipe fitting 4 and the second half-section pipe fitting 8 are wrapped on the pipeline 1 for welding, and the valve 13 is connected to the high-pressure flange 5 after placing a sealing gasket on the high-pressure flange 5. The plugging connector 14 is installed on the valve 13, and the hole-punching device 15 is connected to the plugging connector 14 after opening the valve 13. A hole is punched on the pipeline 1 through the hole-punching device 15 for inserting the plugging steel rod 10. After the hole is punched, the hole-punching device 15 is removed, and the plugging machine 16 is installed on the plugging connector 14. The plugging machine 16 is used to insert the plugging steel rod 10 into the pipeline 1 and reach the low point of the plug 9. When the plugging steel rod 10 reaches the calculated position, the locking pin 6 is inserted to lock the plugging steel rod 10.

[0030] In an embodiment of the utility model, a nut 17 and a glue injection valve 18 connected to the nut 17 are welded on the pipeline 1, and the glue injection valve 18 is used to connect to a pneumatic drill or a glue injection gun.

[0031] By adopting the above technical scheme: since there is a narrow gap between the contact point between the sealing steel rod 10 and the inner wall of the pipe 1 when the sealing steel rod 10 is used alone for sealing, a nut 17 is welded at the inner leakage valve to connect the glue injection valve 18, and a hole is drilled with a pneumatic drill, and then the glue injection machine is connected to the glue injection valve 18, and the glue injection valve 18 is opened to inject glue into the pipe 1 until the pipe 1 is filled to seal the small gap.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention. These improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A high-pressure small-diameter non-stop plugging device, comprising a welding spool piece (2) welded to a pipeline (1), and an internal leakage valve (3) on the pipeline (1), characterized in that: include: A welding cross-piece (2) is horizontally divided into a connecting section and a blocking section along the axis of the welding cross-piece (2); A connecting section, the connecting section comprising a first half-cut pipe member (4) and a high-pressure flange (5) connected to the first half-cut pipe member (4), a locking pin hole (7) for inserting a locking pin (6) being provided on a side of the high-pressure flange (5); A plugging section, the plugging section comprising a second half-split pipe member (8) and a plug (9) connected to the second half-split pipe member (8); A plugging steel rod (10), wherein the diameter of the plugging steel rod (10) corresponds to that of the plug (9), a sealing groove (11) is provided in the plugging steel rod (10) and a sealing ring (12) is installed in the sealing groove (11), and the sealing ring (12) is tightly fitted to the high-pressure flange (5); A valve (13), one end of which is connected to the high-pressure flange (5), and the other end of which is connected to the plugging connector (14). A plugging connector (14), wherein the plugging connector (14) is used to connect a hole-opening device (15) or a plugging machine (16).

2. The non-stop high-pressure small-diameter pipe plugging device according to claim 1 is characterized by: The interface and horizontal surface of the welding four-way piece (2) are both grooved.

3. The non-stop high-pressure small-diameter pipe plugging device according to claim 2 is characterized by: A nut (17) and a glue injection valve (18) connected to the nut (17) are also welded on the pipeline (1), and the glue injection valve (18) is used to connect to a pneumatic drill or a glue injection gun.

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