Pipeline negative pressure vacuum replacement device

Abstract

The utility model relates to the technical field of natural gas pipelines, and discloses a pipeline negative pressure vacuum replacement device which comprises a transportation assembly, a replacement assembly arranged on the transportation assembly and a connecting assembly movably connected to one end of the replacement assembly. One side of the vacuum pump is electrically connected with a winding roll, the other end of the connecting pipe A is communicated with a filter, one side of the filter is communicated with a connecting pipe B, the connecting pipe B is sequentially provided with a valve A, a four-way joint and a valve B, and one end of the valve B is communicated with a hose. The connecting assembly comprises a connector, one end of the connector is fixedly connected with a butt joint A, and the other end of the connector is fixedly connected with a butt joint B; the inner wall of the connector B is fixedly connected with a telescopic guide column, the outer side of the telescopic guide column is sleeved with a spring, the output end of the telescopic guide column is fixedly connected with an elastic ring, and the connecting assembly, the spring and the elastic ring are arranged, so that the specifications of pipelines capable of being connected with the connector B are increased, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipelines, in particular to a pipeline negative pressure vacuum replacement device. Background Art

[0002] A natural gas pipeline is a pipeline that transports natural gas (including associated gas produced by oil fields) from the extraction site or processing plant to the city's gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. Using natural gas pipelines to transport natural gas is a way to transport natural gas in large quantities on land.

[0003] Chinese patent document CN209801165U discloses a negative pressure vacuum replacement device for a gas pipeline, comprising a vacuum pump, a vacuum pressure gauge, a four-way joint, a bellows and a connecting pipe connected to the vacuum pump, the middle of the connecting pipe is connected to a cartridge filter and a check valve in sequence, the first port of the four-way joint is connected to the end of the connecting pipe, the vacuum pressure gauge and the bellows are respectively connected to the second port and the third port of the four-way joint, a copper ball valve is arranged between the bellows and the four-way joint, the bellows is connected to the gas pipeline, the fourth port of the four-way joint is set as an inspection port, and the detection port is matched with an external gas detector. The utility model has the characteristics of high safety performance and simple structure, but the replacement device directly connects the gas pipeline and the bellows, but the bellows has a certain specification, which is more convenient when connecting pipelines with the same diameter, and it is more troublesome to connect when the gas pipelines are inconsistent, so it cannot be quickly connected. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing replacement device directly connects the gas pipeline and the bellows, but the bellows has certain specifications and is more convenient when connecting pipelines with the same diameter. When the gas pipelines are inconsistent, it is more troublesome to connect, so that the connection cannot be made quickly. A pipeline negative pressure vacuum replacement device is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pipeline negative pressure vacuum replacement device, including a transport component, a replacement component is arranged on the transport component, and one end of the replacement component is movably connected to a connection component, the replacement component includes a connecting pipe A, one end of the connecting pipe A is connected to a vacuum pump, one side of the vacuum pump is electrically connected to a winding reel, the other end of the connecting pipe A is connected to a filter, one side of the filter is connected to a connecting pipe B, valve A, a four-way valve and valve B are installed on the connecting pipe B in sequence, one end of the valve B is connected to a hose, the connection component includes a connecting head, one end of the joint is fixedly connected to a docking joint A, the outer surface of the docking joint A is movably connected to the inner wall of the hose, the other end of the connecting head is fixedly connected to the docking joint B, the inner wall of the joint B is fixedly connected to a telescopic guide column, the outer side of the telescopic guide column is sleeved with a spring, and the output end of the telescopic guide column is fixedly connected to an elastic ring.

[0006] Preferably, the transport assembly comprises a trolley, a vacuum pump is fixedly mounted on the upper surface of the trolley, and the filter is placed on the upper surface of the trolley, a push rod is arranged on the upper surface of the trolley, the push rod is mounted on the trolley by bolts, a mounting frame is fixedly connected to the upper surface of the trolley, the cable reel is movably mounted on the mounting frame, and a universal wheel is fixedly connected to the lower bottom surface of the trolley;

[0007] Used to mount the entire replacement assembly on a cart for easy transportation.

[0008] Preferably, a pressure gauge is movably connected to the cross-way;

[0009] Used to monitor the pressure value in the pipeline during the replacement process in real time.

[0010] Preferably, an anti-slip groove is provided on the connecting head;

[0011] For easy access to the connector for operation.

[0012] Preferably, a groove is provided on the outer surface of the butt joint A, a spring A is fixedly connected to the surface of the groove, and an abutment block is fixedly connected to one end of the spring A;

[0013] It is used to increase the friction between connector A and the hose, thereby improving the connectivity between the two.

[0014] Preferably, an elastic band is fixedly connected between each two groups of elastic rings;

[0015] Used to connect four sets of elastic rings into a whole.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model proposes a pipeline negative pressure vacuum replacement device, which increases the friction between the butt joint A and the hose by setting a connection component and installing an abutment block on the butt joint A. At the same time, the specifications of the pipelines that can be connected to the butt joint B are increased by setting a spring and an elastic ring, thereby increasing its practicality.

[0018] 2. The utility model proposes a pipeline negative pressure vacuum replacement device, which sets a transport component, installs a universal wheel at the bottom of the trolley, and installs a push rod on the trolley through bolts, so that the operator can adjust the angle of the push rod according to the use requirements, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a pipeline negative pressure vacuum replacement device proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of a transport component of a pipeline negative pressure vacuum replacement device proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of a replacement component of a pipeline negative pressure vacuum replacement device proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of a connection assembly of a pipeline negative pressure vacuum replacement device proposed by the utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of a butt joint A of a pipeline negative pressure vacuum replacement device proposed by the utility model;

[0024] Figure 6 A cross-sectional schematic diagram of a butt joint B of a pipeline negative pressure vacuum replacement device proposed by the utility model;

[0025] Legend:

[0026] 1. Transport assembly; 11. Trolley; 12. Push rod; 13. Bolt; 14. Mounting frame; 15. Universal wheel; 2. Replacement assembly; 21. Connecting pipe A; 22. Vacuum pump; 23. Cable reel; 24. Filter; 25. Connecting pipe B; 26. Valve A; 27. Cross; 271. Pressure gauge; 28. Valve B; 29. ​​Hose; 3. Connecting assembly; 31. Connecting head; 311. Anti-skid groove; 32. Butt joint A; 321. Groove; 322. Spring A; 323. Abutment block; 33. Butt joint B; 34. Telescopic guide column; 35. Spring; 36. Elastic ring; 361. Elastic belt. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply 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 of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Reference Figure 1-6The utility model provides an embodiment: a pipeline negative pressure vacuum replacement device, including a transport component 1, a replacement component 2 is arranged on the transport component 1, and one end of the replacement component 2 is movably connected to a connection component 3, the replacement component 2 includes a connecting pipe A21, which connects a vacuum pump 22 and a filter 24 together, one end of the connecting pipe A21 is connected to the vacuum pump 22 to extract natural gas from the natural gas pipeline, one side of the vacuum pump 22 is electrically connected to a winding reel 23 to reel in the wire, the other end of the connecting pipe A21 is connected to the filter 24 to filter out toxic and harmful gases in the gas extracted from the pipeline, one side of the filter 24 is connected to a connecting pipe B25, and valves A26 are installed on the connecting pipe B25 in sequence , close the connecting pipe B24, the four-way 27 connects the extraction device and the valve B28 to separate the entire device from the hose 29. One end of the valve B28 is connected to the hose 29. The connecting component 3 includes a connector 31. One end of the connector 31 is fixedly connected to a docking joint A32. The outer surface of the docking joint A32 is movably connected to the inner wall of the hose 29. The other end of the connector 31 is fixedly connected to a docking joint B33 to connect to the natural gas pipeline. The inner wall of the connector B33 is fixedly connected to a telescopic guide column 34. A spring 35 is sleeved on the outer side of the telescopic guide column 34 to apply a contraction force to the pipeline installed on the docking joint B34. The output end of the telescopic guide column 34 is fixedly connected to an elastic ring 36 to increase the accommodation specifications of the docking joint B34.

[0030] The transport assembly 1 includes a trolley 11, which supports the entire replacement assembly 2. A vacuum pump 22 is fixedly installed on the upper surface of the trolley 11, and a filter 24 is placed on the upper surface of the trolley 11. A push rod 12 is arranged on the upper surface of the trolley 11, and the push rod 12 is installed on the trolley 11 by bolts 13. A mounting frame 14 is fixedly connected to the upper surface of the trolley 11, and a cable reel 23 is movably installed on the mounting frame 14. A universal wheel 15 is fixedly connected to the lower bottom surface of the trolley 11, which is convenient for the entire replacement device at one end. The four-way 27 is on the upper surface of the trolley 11. A pressure gauge 271 is movably connected to monitor the pressure in the connecting pipe B25 during replacement in real time. An anti-slip groove 311 is provided on the connecting head 31 to facilitate taking the connecting head 31. A groove 321 is provided on the outer surface of the joint A32. A spring A322 is fixedly connected to the surface of the groove 321. An abutment block 323 is fixedly connected to one end of the spring A322 to increase the connectivity between the joint A32 and the hose 29 assembly. An elastic belt 361 is fixedly connected between every two sets of elastic rings 36 to connect the elastic rings 36 into a whole.

[0031] Working principle: First, close the valve of the natural gas pipeline, and then insert the natural gas pipeline into the docking joint B33. The inner diameter of the docking joint B33 can be changed under the joint action of the telescopic guide column 34 and the spring 35. Under the joint action of the elastic ring 36 and the elastic belt 361, it is tightly attached to the outer wall of the natural gas pipeline to prevent leakage. Then turn on the vacuum pump 22, and extract the gas in the natural gas pipeline through the connecting pipe A21 and the connecting pipe B25, and filter out the toxic and harmful gases through the filter 24, and observe the pressure gauge 271 at any time to see if it has reached the working pressure.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline negative pressure vacuum replacement device, comprising a transport component (1), a replacement component (2) being arranged on the transport component (1), and a connection component (3) being movably connected to one end of the replacement component (2), characterized in that: The replacement assembly (2) comprises a connecting pipe A (21), one end of the connecting pipe A (21) is connected to a vacuum pump (22), one side of the vacuum pump (22) is electrically connected to a cable reel (23), the other end of the connecting pipe A (21) is connected to a filter (24), one side of the filter (24) is connected to a connecting pipe B (25), a valve A (26), a cross-way (27) and a valve B (28) are sequentially installed on the connecting pipe B (25), one end of the valve B (28) is connected to a hose (2 9), the connection assembly (3) comprises a connector (31), one end of the connector (31) is fixedly connected to a docking connector A (32), the outer surface of the docking connector A (32) is movably connected to the inner wall of the hose (29), the other end of the connector (31) is fixedly connected to a docking connector B (33), the inner wall of the connector B (33) is fixedly connected to a telescopic guide column (34), the outer side of the telescopic guide column (34) is sleeved with a spring (35), and the output end of the telescopic guide column (34) is fixedly connected to an elastic ring (36).

2. A pipeline negative pressure vacuum replacement device according to claim 1, characterized in that: The transport assembly (1) comprises a trolley (11), a vacuum pump (22) is fixedly mounted on the upper surface of the trolley (11), a filter (24) is placed on the upper surface of the trolley (11), a push rod (12) is arranged on the upper surface of the trolley (11), the push rod (12) is mounted on the trolley (11) by means of bolts (13), a mounting frame (14) is fixedly connected to the upper surface of the trolley (11), a cable reel (23) is movably mounted on the mounting frame (14), and a universal wheel (15) is fixedly connected to the lower bottom surface of the trolley (11).

3. A pipeline negative pressure vacuum replacement device according to claim 1, characterized in that: The cross-connection (27) is movably connected with a pressure gauge (271).

4. The pipeline negative pressure vacuum replacement device according to claim 1, characterized in that: The connecting head (31) is provided with an anti-slip groove (311).

5. The pipeline negative pressure vacuum replacement device according to claim 1, characterized in that: The outer surface of the joint A (32) is provided with a groove (321), the surface of the groove (321) is fixedly connected with a spring A (322), and one end of the spring A (322) is fixedly connected with an abutment block (323).

6. The pipeline negative pressure vacuum replacement device according to claim 1, characterized in that: An elastic band (361) is fixedly connected between each two groups of elastic rings (36).

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