Gas pipeline diffusing system

Abstract

The utility model discloses a gas pipeline bleeding system which comprises a gas pipeline, a first bleeding pipeline, a second bleeding pipeline and a backfire prevention device, the front end and the rear end of the gas pipeline are respectively provided with a first switch valve, the front side of the gas pipeline is connected with the first bleeding pipeline, and the rear side of the gas pipeline is connected with the second bleeding pipeline; according to the system, a first diffusing pipeline and a second diffusing pipeline are arranged, the first diffusing pipeline is connected with a gas source, so that inert gas is input into a gas pipeline from the first diffusing pipeline, and gas and the inert gas in the gas pipeline are pushed to the second diffusing pipeline to be discharged; by arranging the ignition port to burn exhausted gas, diffusion combustion of the gas is achieved, meanwhile, cooling water and a non-return part are arranged in a matched mode, combustion fire is prevented from returning to the gas guide pipe and the second diffusion pipeline, the non-return part has the water return prevention function, the overall structure is practical, safety is high, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of gas, in particular to a gas pipeline release system. Background Art

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere. In urban gas pipeline networks, natural gas inside is usually transported to various users through gas pipelines for use. After a period of use, if a gas pipeline leaks, the gas pipeline needs to be repaired and replaced. At this time, in order to ensure safety, the gas in the gas pipeline needs to be discharged. However, it is difficult to determine whether the gas is completely discharged in the existing gas pipeline, and the safety of the gas after discharge also needs to be ensured. Publication No. CN220417344U discloses a combustible gas release system for a gasifier, comprising a release flare assembly, an ignition assembly, and a flame detection assembly. The release flare assembly includes a release pipe, a torch, and a pilot light. The release pipe is connected to the torch and configured to deliver combustible gas to the torch. The head of the torch is provided with a combustible gas outlet. The pilot light is located near the head of the torch. The ignition assembly includes a burner located near the head of the torch, configured to ignite combustible gas released from the head of the torch and to ignite the pilot light. The flame detection assembly detects whether the combustible gas released from the head of the torch and / or the pilot light are ignited. The flame detection assembly includes a flame detector, a temperature detector, and a gas pressure gauge. This system lacks backfire protection and other safety features, resulting in insufficient safety. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a practical and highly safe gas pipeline venting system.

[0004] To achieve the above-mentioned object, the present invention provides a solution as follows: a gas pipeline release system, comprising a gas pipeline, a first release pipeline, a second release pipeline, and a backfire preventer, wherein first switch valves are respectively provided at the front and rear ends of the gas pipeline, the front side of the gas pipeline is connected to the first release pipeline, and the rear side of the gas pipeline is connected to the second release pipeline;

[0005] The first discharge pipe is connected to the gas source, and two second switch valves are provided on the second discharge pipe, and the two second switch valves are spaced apart in front and behind. The backfire preventer includes a box body, an air guide pipe, and a check piece. Cooling water is provided in the box body, and the end of the air guide pipe extends into the cooling water. An ignition port is provided on the top of the box body, and the check piece is connected between the air guide pipe and the second discharge pipe. A check channel is formed in the check piece, and a check plate is provided in the check channel. The check plate is connected to a reset spring, and the reset spring is used to push the check plate to close the gas outlet end of the check channel.

[0006] The beneficial effects of the present invention are as follows: the gas in the gas pipeline is released. The system is provided with a first release pipeline and a second release pipeline, and the first release pipeline is used to connect the gas source so as to input the inert gas from the first release pipeline into the gas pipeline, so as to push the gas and the inert gas in the gas pipeline to the second release pipeline for discharge. Then, a backfire preventer is provided and an ignition port is provided to burn the discharged gas, thereby achieving the release and combustion of the gas. At the same time, cooling water and a check piece are provided to prevent the burning fire from backfiring to the gas guide pipe and the second release pipeline. The check piece has a backflow prevention function. The overall structure is practical, safe and practical.

[0007] Furthermore, a third switch valve is provided on the first venting pipe.

[0008] Furthermore, a filter is provided on the second emission pipe, and the filter is located upstream of the two second switch valves. After adopting the above structure, the utility model can filter impurities.

[0009] Furthermore, the filter includes a filter housing, a filter screen, and a top cover. A filter channel is formed in the filter housing, and the filter screen is arranged in the filter channel, wherein the filter channel is connected to a second emission pipe.

[0010] Furthermore, the top cover is detachably mounted on the top of the filter housing.

[0011] Furthermore, flow meters are provided on both the first and second relief pipes.

[0012] Furthermore, the check member is provided with a control chamber, which is connected to the second discharge pipe and the check passage, respectively. A switch rotor is rotatably connected to the control chamber, and the switch rotor defines a first air guide passage. Rotating the switch rotor connects the first air guide passage to the second discharge pipe and the check passage. The utility model employs this structure to control the opening and closing of the check member.

[0013] Furthermore, the anti-return member is rotatably connected to a rotating shaft, the rotating shaft is downwardly connected to the switch rotor, and a handle is sleeved on the rotating shaft.

[0014] Furthermore, a second air channel is formed in the check member, one end of which is connected to the check channel and the other end is connected to the air pipe. A sliding rod is slidably connected to the air pipe, the end of which is connected to the check plate, and the return spring is mounted on the sliding rod. With the above structure, the utility model has a backflow prevention function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structure diagram of the utility model.

[0016] Figure 2 This is a diagram showing the internal structure of the anti-return component of the present utility model.

[0017] Figure 3 This is a top view of the internal structure of the filter of the present invention.

[0018] Among them, 1 is a gas pipeline, 11 is a first switch valve, 21 is a first release pipeline, 211 is a second switch valve, 22 is a second release pipeline, 221 is a third switch valve, 23 is a flow meter, 31 is a box body, 311 is an ignition port, 32 is an air guide pipe, 33 is a check member, 331 is a check channel, 332 is a check plate, 333 is a reset spring, 334 is a control chamber, 335 is a switch rotor, 3351 is a first air guide channel, 336 is a rotating shaft, 3361 is a handle, 337 is a second air guide channel, 338 is a sliding rod, 41 is a filter housing, 42 is a filter channel, 43 is a filter screen, and 44 is a top cover. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] See attached Figure 1 To the attached Figure 3As shown, a gas pipeline relief system includes a gas pipeline 1, a first relief pipeline 21, a second relief pipeline 22, and a backfire preventer. First switch valves are respectively provided at the front and rear ends of the gas pipeline 1. The front side of the gas pipeline 1 is connected to the first relief pipeline 21, and the rear side of the gas pipeline 1 is connected to the second relief pipeline 22. A third switch valve 211 is provided on the first relief pipeline 21.

[0022] The first diffusion pipe 21 is connected to the gas source, and two second switch valves 221 are provided on the second diffusion pipe. The two second switch valves 221 are spaced apart in front and back. The backfire preventer includes a box body 31, an air guide pipe 32, and a check piece 33. Cooling water is provided in the box body 31, and the end of the air guide pipe 32 extends into the cooling water. An ignition port 311 is provided on the top of the box body 31, and a check piece 33 is connected between the air guide pipe 32 and the second diffusion pipe 22. A check channel 331 is formed in the check piece 33, and a check plate 332 is provided in the check channel 331. The check plate 332 is connected to a reset spring 333, and the reset spring 333 is used to push the check plate 332 to close the gas outlet end of the check channel 331.

[0023] In this embodiment, a filter is provided on the second release pipe 22, and the filter is located upstream of the two second switch valves 221; the filter includes a filter housing 41, a filter screen 43, and a top cover 44, and a filter channel 42 is formed in the filter housing 41, and a filter screen 43 is provided in the filter channel 42, wherein the filter channel 42 is connected to the second release pipe 22; the top cover 44 is detachably installed on the top of the filter housing 41.

[0024] In this embodiment, flow meters 23 are provided on both the first and second emission pipes 21 and 22 .

[0025] In this embodiment, a control chamber 334 is provided in the check member 33, and the control chamber 334 is respectively connected to the second discharge pipe and the check channel 331; a switch rotor 335 is rotatably connected in the control chamber 334, and the switch rotor 335 has a first air guide channel 3351, and the first air guide channel 3351 is connected to the second discharge pipe 22 and the check channel 331 by rotating the switch rotor 335; a rotating shaft 336 is rotatably connected to the check member 33, and the rotating shaft 336 is downwardly connected to the switch rotor 335, and a handle 3361 is installed on the rotating shaft 336; a second air guide channel 337 is opened in the check member 33, and one end of the second air guide channel 337 is connected to the check channel 331, and the other end is connected to the air guide pipe 32, and a sliding rod 338 is slidably connected in the air guide pipe 32, and the end of the sliding rod 338 is connected to the check plate 332, and a reset spring 333 is installed on the sliding rod 338.

[0026] In this embodiment, the specific gas release process is as follows: first, close the two first on-off valves 11, then select nitrogen as the gas source and connect the gas source to the first release pipe 21, then open the second on-off valve 211 and the third on-off valve 221 respectively, allowing nitrogen to enter the gas pipe 1 from the first release pipe 21, thereby pushing the gas in the gas pipe 1 into the second release pipe 22, and then, after being filtered by the filter, delivering it to the check member 33;

[0027] At this time, the handle 3361 is turned to rotate the switch rotor 335 so that the first gas guide channel 3351 is aligned with the check channel 331, thereby connecting the first gas guide channel 3351 to the second release pipe 22 and the check channel 331. Then, the gas and nitrogen pass through the first gas guide channel 3351 and the check channel 331 in turn, push open the check plate 332, enter the second gas guide channel 337, and then enter the gas guide pipe 32. They are discharged into the cooling water through the gas guide pipe 32 and finally discharged from the cooling water surface and the ignition port 311 in turn. The gas is ignited at the ignition port 311 to burn the discharged gas until the combustion stops, which means that the gas in the gas pipeline 1 is discharged.

[0028] Among them, when backflow occurs in the air guide pipe 32, the cooling water enters the air guide pipe 337 through the air guide pipe 32, and after being accommodated, it pushes the check plate 332 to move, so that the check plate 332 blocks the air outlet end of the check channel 331, that is, the connection between the check channel 331 and the second air guide channel 337, so that the cooling water cannot enter the check channel 331, and thus cannot enter the second release pipe 22 and the gas pipe 1, and has a non-return function.

[0029] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art may, without departing from the scope of the present invention, utilize the technical content disclosed above to make further possible variations and modifications to the present invention, or to modify the present invention into equivalent embodiments with equivalent variations. Therefore, any equivalent variations made in accordance with the principles of the present invention without departing from the scope of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A gas pipeline release system, comprising a gas pipeline (1), a first release pipeline (21), a second release pipeline (22), and a backfire preventer, characterized in that: The gas pipeline (1) is provided with a first switch valve at both ends, the front side of the gas pipeline (1) is connected to the first release pipeline (21), and the rear side of the gas pipeline (1) is connected to the second release pipeline (22); The first emission pipe (21) is connected to the gas source, and two second switch valves (221) are provided on the second emission pipe. The two second switch valves (221) are spaced apart from each other. The backfire preventer comprises a box body (31), an air guide pipe (32), and a check piece (33). Cooling water is provided in the box body (31), and the end of the air guide pipe (32) extends into the cooling water. An ignition port (311) is provided on the top of the box body (31). The check piece (33) is connected between the air guide pipe (32) and the second emission pipe (22). A check channel (331) is formed in the check piece (33), and a check plate (332) is provided in the check channel (331). The check plate (332) is connected to a reset spring (333), and the reset spring (333) is used to push the check plate (332) to close the gas outlet end of the check channel (331).

2. A gas pipeline release system according to claim 1, characterized in that: A third on-off valve (211) is provided on the first venting pipe (21).

3. A gas pipeline release system according to claim 1, characterized in that: A filter is provided on the second venting pipe (22), and the filter is located upstream of the two second switch valves (221).

4. A gas pipeline release system according to claim 3, characterized in that: The filter comprises a filter housing (41), a filter screen (43), and a top cover (44); a filter channel (42) is formed in the filter housing (41); the filter screen (43) is arranged in the filter channel (42); wherein the filter channel (42) is connected to a second emission pipe (22).

5. A gas pipeline release system according to claim 4, characterized in that: The top cover (44) is detachably mounted on the top of the filter housing (41).

6. A gas pipeline release system according to claim 1, characterized in that: A flow meter (23) is provided on both the first relief pipe (21) and the second relief pipe (22).

7. A gas pipeline release system according to claim 1, characterized in that: A control chamber (334) is provided in the check member (33), and the control chamber (334) is respectively connected to the second discharge pipe and the check channel (331). A switch rotor (335) is rotatably connected in the control chamber (334), and the switch rotor (335) is provided with a first air guide channel (3351). By rotating the switch rotor (335), the first air guide channel (3351) is connected to the second discharge pipe (22) and the check channel (331).

8. A gas pipeline release system according to claim 7, characterized in that: The non-return member (33) is rotatably connected to a rotating shaft (336), the rotating shaft (336) is downwardly connected to the switch rotor (335), and a handle (3361) is sleeved on the rotating shaft (336).

9. A gas pipeline release system according to claim 1, characterized in that: A second air guide channel (337) is provided in the non-return member (33), one end of the second air guide channel (337) is connected to the non-return channel (331), and the other end is connected to the air guide tube (32), a sliding rod (338) is slidably connected in the air guide tube (32), an end of the sliding rod (338) is connected to the non-return plate (332), and the return spring (333) is sleeved on the sliding rod (338).

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