Temporary plugging device for pipeline

Abstract

The utility model discloses a pipeline temporary plugging device which comprises a fuel gas conveying pipe and an abutting plate attached to the opening of the fuel gas conveying pipe, an expansion air bag is arranged on the side, in the fuel gas conveying pipe, of the abutting plate, the expansion air bag and the abutting plate are communicated through an air inlet hole, an inflation assembly is arranged at the air inlet hole, and the inflation assembly is connected with the fuel gas conveying pipe. An elastic tightening belt is elastically arranged on the side wall of the fuel gas conveying pipe in a surrounding mode, a clamping assembly is arranged between the abutting plate and the elastic tightening belt, the inflating assembly comprises a threaded groove formed in the side wall of the gas inlet hole, and an inflating bag is arranged on the other side of the abutting plate. The utility model relates to the technical field of gas engineering. According to the temporary plugging device for the pipeline, pipelines with different pipe diameters can be plugged, the situation that the expansion air bag is extruded out of the gas conveying pipe under the action of gas in the pipeline is prevented through clamping connection between the elastic tightening belt and the limiting plate, and the safety of the pipeline is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas engineering, in particular to a temporary pipeline blocking device. Background Art

[0002] A temporary pipeline plugging device is of great significance in the field of gas construction. In gas pipeline construction, since the construction process involves pipeline maintenance, inspection, replacement and other operations, the pipeline needs to be temporarily blocked to ensure construction safety and environmental protection.

[0003] The use of temporary pipeline plugging devices can effectively control gas leakage in the pipeline, avoid accidents, and protect the safety of workers and the surrounding environment. At the same time, temporary plugging devices can also help to construct the pipeline in sections, improve construction efficiency, and reduce project costs and construction time.

[0004] When existing temporary pipeline plugging devices use airbags to plug pipelines, they often only rely on the friction between the sealing airbags and the inner wall of the pipeline to prevent the sealing airbags from being flushed out of the pipeline. This situation is very likely to cause safety problems during gas construction.

[0005] Therefore, the utility model provides a temporary pipeline plugging device to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a temporary pipeline plugging device to solve the above problems.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a temporary pipeline blocking device, including a gas delivery pipe and a back plate attached to the opening of the gas delivery pipe, the back plate is provided with an expansion airbag on one side inside the gas delivery pipe, the expansion airbag and the back plate are connected to each other through an air inlet hole, an air pumping assembly is provided at the air inlet hole, an elastic tightening belt is elastically arranged around the side wall of the gas delivery pipe, and a clamping assembly is provided between the back plate and the elastic tightening belt.

[0008] Preferably: the air pump assembly includes a threaded groove arranged on the side wall of the air inlet hole, an air bag is provided on the other side of the abutment plate, a threaded through pipe is connected to one end of the air bag close to the abutment plate, the threaded through pipe and the threaded groove match each other, and a one-way air valve is provided at the other end of the air bag.

[0009] Preferably: the clamping assembly includes a fixing plate fixedly arranged at the upper and lower side walls of the abutment plate, a telescopic rod is fixed at the side wall where the two fixing plates are close to each other, a limiting plate is fixedly arranged at the end of the telescopic rod, a spring is arranged between the fixing plate and the limiting plate, and the spring is arranged at the side wall of the telescopic rod.

[0010] Preferably, a rubber sealing pad is provided between the air bag and the threaded through pipe, and the air bag, the threaded through pipe and the rubber sealing pad are integrally formed.

[0011] Preferably, the limiting plate is L-shaped, and the end of the limiting plate abuts against the side wall of the elastic tightening band.

[0012] Beneficial Effects

[0013] The utility model provides a temporary pipeline plugging device. Compared with the prior art, it has the following beneficial effects:

[0014] (1) The temporary pipe plugging device respectively connects two limit plates at the upper and lower ends with an elastic tightening belt, and can plug pipes of different diameters through the cooperation of a telescopic rod and a spring.

[0015] (2) The temporary pipeline blocking device is a process of connecting the threaded through-tube and the threaded groove by threading, and then repeatedly squeezing the inflatable airbag to inflate the inflatable airbag until the inflatable airbag expands to the extent of blocking the gas transmission pipe. Through the above process, the elastic tightening belt and the limit plate can be clamped to prevent the inflatable airbag from being squeezed out of the gas transmission pipe under the action of the gas in the pipeline, thereby effectively ensuring the safety of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a temporary pipeline plugging device proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of a temporary pipeline plugging device proposed by the utility model from another angle;

[0018] Figure 3 This is a schematic diagram of the overall structure of a temporary pipeline plugging device proposed by the utility model from another angle;

[0019] Figure 4 yes Figure 3 Schematic diagram of the structure at A in the middle.

[0020] In the figure, 1, gas delivery pipe; 2, stop plate; 3, expansion air bag; 4, elastic tightening belt; 5, air bag; 6, threaded through pipe; 7, one-way air valve; 8, air inlet hole; 9, threaded groove; 10, fixing plate; 11, limit plate; 12, telescopic rod; 13, spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 A temporary pipeline plugging device comprises a gas delivery pipe 1 and a butt plate 2 attached to the opening of the gas delivery pipe 1, an expansion airbag 3 is provided on one side of the butt plate 2 inside the gas delivery pipe 1, the expansion airbag 3 and the butt plate 2 are connected to each other through an air inlet hole 8, an air pumping assembly is provided at the air inlet hole 8, an elastic tightening belt 4 is elastically arranged around the side wall of the gas delivery pipe 1, and a clamping assembly is provided between the butt plate 2 and the elastic tightening belt 4.

[0023] In an optional embodiment: the air-inflating assembly includes a threaded groove 9 arranged on the side wall of the air inlet hole 8, an air-inflating bag 5 is provided on the other side of the abutment plate 2, and a threaded through pipe 6 is provided at one end of the air-inflating bag 5 close to the abutment plate 2. The threaded through pipe 6 and the threaded groove 9 match each other, and a one-way air valve 7 is provided at the other end of the air-inflating bag 5.

[0024] It should be noted that when it is necessary to inflate the expansion bag 3, the threaded through pipe 6 and the threaded groove 9 can be connected by threading, and then the expansion bag 5 can be squeezed repeatedly to inflate the expansion bag 3 until the expansion bag 3 expands to the extent of blocking the gas transmission pipe 1. Through the above process, the elastic tightening band 4 and the limit plate 11 can be clamped together to prevent the expansion bag 3 from being squeezed out of the gas transmission pipe 1 under the action of the gas in the pipeline, thereby effectively ensuring the safety of the pipeline.

[0025] In an optional embodiment: the clamping assembly includes a fixing plate 10 fixedly arranged at the upper and lower side walls of the abutment plate 2, a telescopic rod 12 is fixed at the side wall where the two fixing plates 10 are close to each other, a limiting plate 11 is fixed at the end of the telescopic rod 12, a spring 13 is arranged between the fixing plate 10 and the limiting plate 11, and the spring 13 is arranged at the side wall of the telescopic rod 12.

[0026] It should be noted that by respectively clamping the two limit plates 11 at the upper and lower ends and the elastic tightening belt 4 with each other, and by the cooperation between the telescopic rod 12 and the spring 13, pipes of different diameters can be blocked.

[0027] In an optional embodiment, a rubber sealing pad is provided between the air bag 5 and the threaded through pipe 6 , and the air bag 5 , the threaded through pipe 6 and the rubber sealing pad are integrally formed.

[0028] It should be noted that the inflation bag 3 can be inflated by the inflation bag 5, and the sealing between the structures is ensured to prevent air leakage and the like, thereby ensuring the blocking effect on the pipeline.

[0029] In an optional embodiment, the limiting plate 11 is L-shaped, and the end of the limiting plate 11 abuts against the side wall of the elastic tightening band 4 .

[0030] It should be noted that the limiting plate 11 can further prevent the gas in the pipeline from squeezing out the inflatable airbag 3 through the friction between the elastic tightening belt 4 and the outer wall of the gas delivery pipe 1, thereby ensuring the blocking effect.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] When the device is used, firstly, an elastic tightening band 4 is elastically arranged around the side wall of the pipe opening to be blocked, and then the side of the abutment plate 2 provided with the inflatable airbag 3 is placed against the gas delivery pipe 1, so that the side wall of the gas delivery pipe 1 and the side wall of the abutment plate 2 fit each other. In this process, the two limit plates 11 at the upper and lower ends and the elastic tightening band 4 are respectively clamped with each other, and the pipes of different diameters can be blocked by the mutual cooperation of the telescopic rod 12 and the spring 13;

[0033] When it is necessary to inflate the inflatable airbag 3, the threaded through-tube 6 and the threaded groove 9 can be connected by thread, and then the inflatable airbag 5 can be squeezed repeatedly to inflate the inflatable airbag 3 until the inflatable airbag 3 is inflated to the extent that the gas delivery pipe 1 is blocked. Through the above process, the elastic tightening belt 4 and the limiting plate 11 can be clamped to prevent the inflatable airbag 3 from being squeezed out of the gas delivery pipe 1 under the action of the gas in the pipeline, thereby effectively ensuring the safety of the pipeline;

[0034] In this case, an inflator or the like can also be used to inflate the expandable airbag 3 .

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] 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 temporary pipeline plugging device, comprising a gas delivery pipe (1) and a stop plate (2) attached to an opening of the gas delivery pipe (1), characterized in that: The abutment plate (2) is provided with an expansion air bag (3) on one side inside the gas delivery pipe (1); the expansion air bag (3) and the abutment plate (2) are connected to each other via an air inlet hole (8); an air pumping assembly is provided at the air inlet hole (8); an elastic tightening belt (4) is elastically arranged around the side wall of the gas delivery pipe (1); and a clamping assembly is provided between the abutment plate (2) and the elastic tightening belt (4).

2. A pipeline temporary plugging device according to claim 1, characterized in that: The air pump assembly comprises a threaded groove (9) arranged on the side wall of the air inlet hole (8); an air pump bag (5) is arranged on the other side of the abutment plate (2); a threaded through pipe (6) is arranged at one end of the air pump bag (5) close to the abutment plate (2); the threaded through pipe (6) and the threaded groove (9) match each other; and a one-way air valve (7) is arranged at the other end of the air pump bag (5).

3. A temporary pipeline plugging device according to claim 1, characterized in that: The clamping assembly comprises a fixing plate (10) fixedly arranged at the upper and lower side walls of the abutment plate (2); a telescopic rod (12) is fixedly arranged at the side wall of the two fixing plates (10) close to each other; a limiting plate (11) is fixedly arranged at the end of the telescopic rod (12); a spring (13) is arranged between the fixing plate (10) and the limiting plate (11); and the spring (13) is arranged at the side wall of the telescopic rod (12).

4. A temporary pipeline plugging device according to claim 2, characterized in that: A rubber sealing pad is provided between the air bag (5) and the threaded through pipe (6); the air bag (5), the threaded through pipe (6) and the rubber sealing pad are integrally formed.

5. A pipeline temporary plugging device according to claim 3, characterized in that: The limiting plate (11) is L-shaped, and the end of the limiting plate (11) abuts against the side wall of the elastic tightening band (4).

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