A filter device for natural gas transmission

Abstract

The application relates to a filtering device for natural gas conveying, belonging to the technical field of natural gas equipment, which comprises an air inlet pipe, one side of the air inlet pipe is fixedly connected with a switching box, a reciprocating screw rod is rotationally connected in the switching box, a blocking block is threadedly connected to the outer side of the reciprocating screw rod, and the blocking block is slidably connected with the inner wall of the switching box. The application has the beneficial effect that when the filter screen in one of the connecting pipes needs to be replaced, the reciprocating screw rod is rotated to drive the blocking block to slide in the switching box, the corresponding connecting pipe air inlet is blocked by the blocking block, then the two rotating shafts are simultaneously rotated by the operation of the transmission assembly, the butterfly valve plate is used to block the connecting pipe to be maintained, the normal conveying of natural gas can be ensured when the filter screen is cleaned, the natural gas conveying efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of natural gas equipment technology, and more particularly to a filtration device for natural gas transmission. Background Technology

[0002] Natural gas refers to all gases that exist naturally in the world, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere. However, during transportation, natural gas may be mixed with impurities in the pipeline, affecting its purity. Therefore, a filtration structure is needed to filter impurities from the natural gas. The filtration structure increases the residence time of natural gas in the device. With several sets of filter screens of different pore sizes, the filtration effect of natural gas is improved, and it has a certain effect. However, when in use, the filter screen is located inside the filter tube. Over a long period of use, impurities will accumulate and eventually clog the mesh, thus reducing the filtration efficiency and hindering the normal transportation of natural gas. Cleaning requires the removal of the filter device, which directly leads to the interruption of natural gas transportation.

[0003] A search revealed a Chinese patent disclosure for a natural gas transmission filtration device (authorization announcement number CN217921969U), comprising a first multi-head pipe and a second multi-head pipe. A first connecting flange is fixed to one side of both the first and second multi-head pipes, and a groove is formed on one side of the first connecting flange. A control valve is fixed to one side of both the first and second multi-head pipes. A first fixing ring is fixed inside the control valve near the first multi-head pipe, and a first filter screen is embedded inside the first fixing ring. This patented technology controls the control valve to switch the natural gas pipeline, allowing for cleaning of the other side of the pipeline. During cleaning, the normal transportation of natural gas is maintained without the need for gas shut-off cleaning. While existing technologies may already address the aforementioned issues, this application aims to provide an alternative or replacement technical solution. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main objective of this application is to provide a filtration device for natural gas transportation.

[0005] The technical solution of this application is as follows: A filtration device for natural gas transportation includes an inlet pipe, a switching box fixedly connected to one side of the inlet pipe, a reciprocating screw rotatably connected inside the switching box, a blocking block threadedly connected to the outer side of the reciprocating screw, the blocking block slidably connected to the inner wall of the switching box, two connecting pipes fixedly connected to the side of the switching box away from the inlet pipe, a fixing box fixedly connected to the top of each connecting pipe, a rotating shaft rotatably connected inside each fixing box, a butterfly valve plate fixedly connected to the bottom end of each rotating shaft, the two butterfly valve plates being vertically arranged, the butterfly valve plates being in contact with the inner wall of the connecting pipe, and a transmission assembly provided between the two connecting pipes.

[0006] In a preferred embodiment, the transmission assembly includes a long rack slidably connected between the tops of two fixed boxes, a protective box fixedly connected between the tops of the two fixed boxes, and the top end of the rotating shaft extending into the interior of the protective box and fixedly connected with gears, all of which mesh with the long rack.

[0007] In a preferred embodiment, each connecting pipe has two retaining rings fixedly connected inside, and each retaining ring has a filter screen engaged inside.

[0008] In a preferred embodiment, an electric push rod is fixedly installed on the outside of the protective box, and the piston rod of the electric push rod extends into the interior of the protective box and is fixedly connected to a long rack.

[0009] In a preferred embodiment, a multi-ended pipe is fixedly connected between the two connecting pipes, and both the multi-ended pipe and the air inlet pipe are provided with connecting flanges on their outer sides.

[0010] In a preferred embodiment, a drive motor is fixedly installed on the outside of the switching box, and the output shaft of the drive motor extends into the interior of the switching box and is fixedly connected to a reciprocating lead screw.

[0011] In a preferred embodiment, a sealing door is provided at the top of the connecting pipe and above the retaining ring, and the top area of ​​the switching box is a viewing window.

[0012] Compared with the prior art, the advantages and positive effects of this application are as follows:

[0013] 1. In this application, when the filter screen in one of the connecting pipes needs to be replaced, the rotation of the reciprocating screw can drive the blocking block to slide along the switching box, thereby blocking the corresponding connecting pipe inlet. Then, through the operation of the transmission component, the two rotating shafts can be driven to rotate simultaneously, thereby blocking the connecting pipe to be maintained with the help of the butterfly valve plate. This ensures that the normal transmission of natural gas can be guaranteed even when cleaning the filter screen, without the need to shut off the gas supply, which greatly improves the efficiency of natural gas transmission.

[0014] 2. In this application, the sliding of the long rack can drive two gears to rotate, thereby driving two rotating shafts to rotate simultaneously, so that one connecting pipe is in a blocked state and the other connecting pipe is in an open state. Attached Figure Description

[0015] Figure 1 This application provides an overall perspective view of a filtration device for natural gas transportation;

[0016] Figure 2 This application provides a half-sectional view of a filtration device for natural gas transportation;

[0017] Figure 3 This application provides a schematic diagram of the transmission component of a filtration device for natural gas transportation;

[0018] Figure 4 This application provides a filtration device for natural gas transportation. Figure 3 Enlarged view of point A in the middle.

[0019] Legend: 1. Intake pipe; 2. Switching box; 3. Butterfly valve plate; 4. Connecting pipe; 5. Multi-head pipe; 6. Sealing door plate; 7. Protective box; 8. Fixing box; 9. Drive motor; 10. Blocking block; 11. Snap ring; 12. Filter screen; 13. Reciprocating screw; 14. Long rack; 15. Gear; 16. Rotating shaft; 17. Electric push rod. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] Reference Figure 1-4 A filtration device for natural gas transportation includes an inlet pipe 1. A switching box 2 is fixedly connected to one side of the inlet pipe 1. A reciprocating screw 13 is rotatably connected inside the switching box 2. A blocking block 10 is threadedly connected to the outer side of the reciprocating screw 13. The blocking block 10 is slidably connected to the inner wall of the switching box 2. Two connecting pipes 4 are fixedly connected to the side of the switching box 2 away from the inlet pipe 1. A fixing box 8 is fixedly connected to the top of each connecting pipe 4. A rotating shaft 16 is rotatably connected inside each fixing box 8. A butterfly valve plate 3 is fixedly connected to the bottom of each rotating shaft 16. The two butterfly valve plates 3 are vertically arranged and are flush with the inner wall of the connecting pipe 4. The two connecting pipes 4 are fitted together, and a transmission component is provided between them. When the filter screen 12 in one of the connecting pipes 4 needs to be replaced, the rotation of the reciprocating screw 13 can drive the blocking block 10 to slide along the switching box 2. The blocking block 10 can then be used to block the air inlet of the corresponding connecting pipe 4. Subsequently, the operation of the transmission component can drive the two rotating shafts 16 to rotate simultaneously, thereby using the butterfly valve plate 3 to seal the connecting pipe 4 to be maintained. This ensures that the normal supply of natural gas can be guaranteed even when cleaning the filter screen 12, without the need to shut off the gas supply, which greatly improves the efficiency of natural gas supply.

[0022] Specifically, the transmission assembly includes a long rack 14 slidably connected between the tops of the two fixed boxes 8. A protective box 7 is fixedly connected between the tops of the two fixed boxes 8. By sliding the long rack 14, two gears 15 can be driven to rotate, thereby driving two rotating shafts 16 to rotate simultaneously. This allows one connecting pipe 4 to be in a blocked state while the other connecting pipe 4 is in an open state. The top of the rotating shaft 16 extends into the interior of the protective box 7 and is fixedly connected to the gears 15. The gears 15 are all meshed with the long rack 14. Two retaining rings 11 are fixedly connected inside each connecting pipe 4. The retaining rings 11 are used to allow the staff to install and replace the filter screen 12. The retaining rings 11 are all locked with the filter screen 12. An electric push rod 17 is fixedly installed on the outside of the protective box 7 to provide power to the long rack 14. The piston rod of the electric push rod 17 extends into the interior of the protective box 7 and is fixedly connected to the long rack 14.

[0023] Specifically, a multi-ended pipe 5 is fixedly connected between the two connecting pipes 4. Both the multi-ended pipe 5 and the outer side of the air inlet pipe 1 are provided with connecting flanges to connect with the external air inlet pipe. A drive motor 9 is fixedly installed on the outer side of the switching box 2. The output shaft of the drive motor 9 extends into the interior of the switching box 2 and is fixedly connected to the reciprocating screw 13. A sealing door plate 6 is provided at the top of the connecting pipe 4 and above the retaining ring 11. The top area of ​​the switching box 2 is a viewing window to block the air inlet of the connecting pipe 4.

[0024] Working principle: First, the operator can connect the inlet pipe 1 to the external inlet pipe using the connecting flange, and the multi-head pipe 5 to the external outlet pipe using the connecting flange. Then, natural gas enters the switching box 2 through the inlet pipe 1, and then enters the connecting pipe 4 and the multi-head pipe 5. When the filter screen 12 in one of the connecting pipes 4 needs to be replaced, the drive motor 9 can be started to drive the reciprocating screw 13 to rotate, which in turn drives the blocking block 10 to slide along the inside of the switching box 2. The blocking block 10 can then be used to block the corresponding inlet of the connecting pipe 4. Then, the electric push rod 17 is started, and through the sliding of the long rack 14, the two gears 15 can be driven to rotate, which in turn drives the two rotating shafts 16 to rotate simultaneously. This allows one connecting pipe 4 to be in a blocked state and the other connecting pipe 4 to be in an open state. The butterfly valve plate 3 can then be used to block the connecting pipe 4 to be maintained, thus ensuring the normal supply of natural gas while cleaning the filter screen 12, without the need to shut off the gas supply.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A filtration device for natural gas transportation, comprising an inlet pipe (1), characterized in that: A switching box (2) is fixedly connected to one side of the intake pipe (1). A reciprocating screw (13) is rotatably connected inside the switching box (2). A blocking block (10) is threadedly connected to the outside of the reciprocating screw (13). The blocking block (10) is slidably connected to the inner wall of the switching box (2). Two connecting pipes (4) are fixedly connected to the side of the switching box (2) away from the intake pipe (1). A fixing box (8) is fixedly connected to the top of each connecting pipe (4). A rotating shaft (16) is rotatably connected inside each fixing box (8). A butterfly valve plate (3) is fixedly connected to the bottom of each rotating shaft (16). The two butterfly valve plates (3) are vertically arranged. The butterfly valve plates (3) are in contact with the inner wall of the connecting pipe (4). A transmission assembly is provided between the two connecting pipes (4).

2. The filtration device for natural gas transportation according to claim 1, characterized in that: The transmission assembly includes a long rack (14) slidably connected between the tops of two fixed boxes (8), a protective box (7) fixedly connected between the tops of the two fixed boxes (8), and the top end of the rotating shaft (16) extends into the interior of the protective box (7) and is fixedly connected with gears (15), all of which mesh with the long rack (14).

3. A filtration device for natural gas transportation according to claim 1, characterized in that: The connecting pipe (4) has two retaining rings (11) fixedly connected inside, and each retaining ring (11) has a filter screen (12) locked inside.

4. A filtration device for natural gas transportation according to claim 2, characterized in that: An electric push rod (17) is fixedly installed on the outside of the protective box (7). The piston rod of the electric push rod (17) extends into the interior of the protective box (7) and is fixedly connected to the long rack (14).

5. A filtration device for natural gas transportation according to claim 1, characterized in that: A multi-head pipe (5) is fixedly connected between the two connecting pipes (4), and both the multi-head pipe (5) and the air inlet pipe (1) are provided with connecting flanges on their outer sides.

6. A filtration device for natural gas transportation according to claim 1, characterized in that: A drive motor (9) is fixedly installed on the outside of the switching box (2), and the output shaft of the drive motor (9) extends into the interior of the switching box (2) and is fixedly connected to the reciprocating lead screw (13).

7. A filtration device for natural gas transportation according to claim 3, characterized in that: A sealing door plate (6) is provided at the top of the connecting pipe (4) and above the retaining ring (11), and the top area of ​​the switching box (2) is a viewing window.

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