A pipeline natural gas filter

Abstract

This utility model discloses a pipeline natural gas filter, including a filter base and a filter housing. A filter element is disposed within the filter housing. One end of the filter base has an inlet pipe, and the other end has an outlet pipe. A partition pipe is disposed within the filter base. The inlet pipe communicates with the inner side of the partition pipe, and the outlet pipe communicates with the outer side of the partition pipe. A clamping pipe is slidably connected to the outer end of the partition pipe. A fixing ring is disposed on the partition pipe, and a pressure spring is disposed at the lower end of the fixing ring. The pressure spring cooperates with the clamping pipe, which in turn cooperates with the filter element. A threaded tube is disposed at the upper end of the filter housing, and a threaded wall is disposed within the filter base. The threaded tube cooperates with the threaded wall. An installation ring is rotatably connected within the filter housing, and a positioning rod is disposed at the outer end of the installation ring. A positioning groove is formed within the filter base, and the positioning rod cooperates with the positioning groove. This device ensures the stability of the filter element during installation and the sealing effect after installation, thereby improving filtration stability.

Description

Technical Field

[0001] This utility model relates to the field of natural gas equipment technology, and more specifically, it relates to a pipeline natural gas filter. Background Technology

[0002] Natural gas is more environmentally friendly than coal and better meets the needs of environmental protection in this era. It has developed rapidly in recent years and has a high penetration rate. However, natural gas often contains impurities, which can affect combustion equipment if used directly. Therefore, it is filtered through filtration equipment during transportation.

[0003] Common filtration equipment primarily relies on internal filter elements for filtration during operation. These elements intercept impurities in the natural gas, delivering only pure gas. However, with prolonged use, the internal contamination level of the filter element gradually increases, eventually requiring replacement to maintain filtration capacity. While common filters have relatively simple installation structures, unstable installation, such as tilting due to shaking or other reasons leading to poor contact with the ventilation structure, can affect the seal between the filter element and the filter base, thus impacting filtration efficiency. Furthermore, the common filter housings are connected by threads; during rotation, the filter element may wear against the internal structure, causing instability in its quality and affecting filtration effectiveness. Additionally, impurities remain inside the filter element during operation, requiring disassembly of the housing and removal of the filter element for cleaning—a frequent and labor-intensive process. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a pipeline natural gas filter to solve the technical problem mentioned in the background art that the filter has a simple structure but is inconvenient to use.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pipeline natural gas filter, comprising a filter base and a filter housing, wherein a filter element is provided in the filter housing, the filter base cooperates with the filter housing and the filter element, one end of the filter base is provided with an air inlet pipe and the other end is provided with an air outlet pipe, a partition pipe is provided inside the filter base, the air inlet pipe is connected to the inner side of the partition pipe, the air outlet pipe is connected to the outer side of the partition pipe, a clamping pipe is slidably connected to the outer end of the partition pipe, a fixing ring is provided on the partition pipe, a pressure spring is provided at the lower end of the fixing ring, the pressure spring cooperates with the clamping pipe, and the clamping pipe cooperates with the filter element;

[0008] The filter housing has a threaded tube at its upper end, and the filter base has a threaded wall inside. The threaded tube and the threaded wall cooperate with each other. An installation ring is rotatably connected inside the filter housing. A positioning rod is provided at the outer end of the installation ring. A positioning groove is opened inside the filter base. The positioning rod cooperates with the positioning groove.

[0009] The present invention is further configured such that a flow guide hole is provided inside the filter housing, a sewage discharge pipe is provided at the lower end of the filter housing, the flow guide hole is connected to the sewage discharge pipe, and a control valve is provided at the lower end of the sewage discharge pipe for convenient sewage discharge.

[0010] The present invention is further configured such that a one-way valve is provided between the control valve and the sewage pipe to ensure the stability of the equipment.

[0011] The present invention is further configured such that a support ring is provided at the lower end of the separator tube and a sliding ring is provided at the upper end of the clamping tube, the sliding ring cooperating with the support ring to prevent parts from falling off.

[0012] The present invention is further provided with a first sealing ring on the inner side of the sliding ring and the support ring to improve the sealing effect.

[0013] The present invention is further configured such that a fitting cover is provided at the lower end of the pressing tube, the fitting cover cooperates with the filter element, and a second sealing ring is provided on the inner side of the fitting cover to improve the sealing ability.

[0014] The present invention is further configured such that the mounting ring has a mounting groove, which cooperates with the filter element to make the contact more stable.

[0015] The present invention is further provided with a third sealing ring on the inner side of the mounting groove to further improve the sealing capability.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a pipeline natural gas filter, which has the following features:

[0018] Beneficial effects:

[0019] 1. By cooperating with the separator tube, the clamping tube and the filter element, and by providing pressure through the fixing ring and the pressure spring, the clamping tube replaces the separator tube and comes into close contact with the filter element, ensuring tight contact. This keeps the filter element installation stable, improves the sealing effect, and avoids filtration failure due to poor contact.

[0020] 2. The mounting ring engages with the filter housing to install the filter element. The positioning rod engages with the positioning groove to position the mounting ring during filter housing installation, making the mounting ring independent and stable with the filter base. This ensures the filter element remains stable during installation and is not affected by the rotation of the filter housing, thus preventing damage to the filter element during installation and ensuring filtration efficiency.

[0021] 3. The flow guide hole works in conjunction with the drain pipe to provide additional sewage contact. The discharge is controlled by the control valve and restricted by the check valve. Sewage discharge can be carried out without disassembling the filter shell, which can discharge some impurities in the filter element, reduce the impurity pressure in the filter element, extend the service life, reduce the replacement frequency, and facilitate the operation of workers. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front structure of a pipeline natural gas filter according to the present invention;

[0023] Figure 2 This is a cross-sectional view of the structure of the filter base and filter housing that mates with the filter element in this utility model;

[0024] Figure 3 This is a cross-sectional view of the internal structure of the filter base and the filter housing in this utility model;

[0025] Figure 4 This is a cross-sectional view of the structure of the filter seat and the positioning rod and positioning groove inside the filter shell in this utility model;

[0026] Figure 5 This is a cross-sectional view of the structure of the inner pressure tube and the separator tube of the filter seat in this utility model.

[0027] In the diagram: 1. Filter base; 2. Filter housing; 3. Filter element; 4. Inlet pipe; 5. Outlet pipe; 6. Divider pipe; 7. Pressing pipe; 8. Fixing ring; 9. Pressure spring; 10. Threaded pipe; 11. Threaded wall; 12. Mounting ring; 13. Positioning rod; 14. Positioning groove; 15. Guide hole; 16. Drain pipe; 17. Control valve; 18. Check valve; 19. Support ring; 20. Sliding ring; 21. First sealing ring; 22. Fitting cover; 23. Second sealing ring; 24. Mounting groove; 25. Third sealing ring. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figure 1-5 A pipeline natural gas filter includes a filter base 1 and a filter housing 2. The filter housing 2 is provided with a filter element 3. The filter base 1 cooperates with the filter housing 2 and the filter element 3. One end of the filter base 1 is provided with an air inlet pipe 4 and the other end is provided with an air outlet pipe 5. The filter base 1 is provided with a partition pipe 6. The air inlet pipe 4 is connected to the inner side of the partition pipe 6, and the air outlet pipe 5 is connected to the outer side of the partition pipe 6. A pressure pipe 7 is slidably connected to the outer end of the partition pipe 6. A fixing ring 8 is provided on the partition pipe 6. A pressure spring 9 is provided at the lower end of the fixing ring 8. The pressure spring 9 cooperates with the pressure pipe 7. The pressure pipe 7 cooperates with the filter element 3.

[0032] The filter housing 2 has a threaded tube 10 at the upper end and a threaded wall 11 inside the filter seat 1. The threaded tube 10 and the threaded wall 11 are engaged. The filter housing 2 is rotatably connected to an installation ring 12. The outer end of the installation ring 12 is provided with a positioning rod 13. The filter seat 1 is provided with a positioning groove 14. The positioning rod 13 is engaged with the positioning groove 14.

[0033] In this embodiment, the filter device is formed by the cooperation of filter base 1 and filter shell 2. The filter base 1 is fixed in the working position, and the inlet pipe 4 and outlet pipe 5 are connected to the external natural gas pipeline. The internal filter element 3 works, and the gas flowing in from the inlet pipe 4 flows along the separator pipe 6 into the interior of the filter element 3. The natural gas is filtered by the filter element 3, and the filtered gas is discharged from the outlet pipe 5 on the outside of the filter element 3, while the waste remains inside the filter element 3. When the filter element 3 needs to be replaced, the filter shell 2 is disassembled and the filter element 3 is removed for replacement. During reinstallation, under the pressure of the pressure spring 9, the clamping pipe 7 will be pressed tightly against the filter element 3, so that the filter element 3 and the separator pipe 6 are stably matched to ensure the sealing effect.

[0034] More specifically, the filter housing 2 and the filter base 1 are connected by the engagement of the threaded tube 10 and the threaded wall 11. Before installing the filter housing 2, the positioning rod 13 is aligned and inserted into the positioning groove 14, so that the mounting ring 12 and the filter base 1 remain stable. When the filter housing 2 is rotated, the filter element 3 remains stable under the support of the mounting ring 12 and is in stable contact with the pressing tube 7, and is not affected by the rotation.

[0035] Please see Figure 1 and Figure 3As one method of sewage discharge: a guide hole 15 is provided inside the filter shell 2, and a sewage pipe 16 is provided at the lower end of the filter shell 2. The guide hole 15 is connected to the sewage pipe 16, and a control valve 17 is provided at the lower end of the sewage pipe 16.

[0036] Specifically, the liquid contaminants filtered by the filter element 3 are guided downwards through the guide hole 15 and enter the drain pipe 16. The control valve 17 is then opened to discharge the contaminants, reducing the filtration pressure inside the filter element 3, extending the service life of the filter element 3, and reducing the frequency of disassembling the equipment to replace the filter element 3.

[0037] Please see Figure 1 As a further implementation of the sewage discharge method: a one-way valve 18 is provided between the control valve 17 and the sewage pipe 16.

[0038] Specifically, the one-way valve 18 restricts the flow of pollutants in the drain pipe 16, preventing external substances from entering and affecting the interior of the filter element 3.

[0039] Please see Figure 3 and Figure 5 As a further embodiment of the partition tube: the lower end of the partition tube 6 is provided with a support ring 19, and the upper end of the clamping tube 7 is provided with a sliding ring 20, which cooperates with the support ring 19.

[0040] Specifically, the support ring 19 provides support, and when the clamping tube 7 moves, the sliding ring 20 cooperates with the support ring 19 to provide a restrictive structure, preventing the clamping tube 7 from falling off when it lacks support.

[0041] Please see Figure 5 As a further embodiment of the partition tube: a first sealing ring 21 is provided on the inner side of the sliding ring 20 and the support ring 19.

[0042] Specifically, the first sealing ring 21 provides a sealing effect to ensure the stable flow of natural gas.

[0043] Please see Figure 5 As a further embodiment of the compression tube: the lower end of the compression tube 7 is provided with a fitting cover 22, which cooperates with the filter element 3, and a second sealing ring 23 is provided on the inner side of the fitting cover 22.

[0044] Specifically, the compression tube 7 contacts the filter element 3 through the fitting cover 22 and covers the filter element 3 through the fitting cover 22. Moreover, the second sealing ring 23 provides a sealing effect to ensure stable contact.

[0045] Please see Figures 2-3 As a further embodiment of the mounting ring: the mounting ring 12 is provided with a mounting groove 24, which cooperates with the filter element 3.

[0046] Specifically, the mounting groove 24 provides a structure to stably install the filter element 3 on the mounting ring 12, ensuring that the filter element 3 is installed correctly.

[0047] Please see Figure 3 As a further embodiment of the mounting ring: a third sealing ring 25 is provided on the inner side of the mounting groove 24.

[0048] Specifically, the third sealing ring 25 provides a sealing effect, ensuring stable contact between the filter element 3 and the mounting ring 12, thereby ensuring a seal and filtration capacity.

[0049] In summary, during the use or operation of the overall equipment:

[0050] When using the equipment, the filter housing 1 and filter shell 2 cooperate to form a filter device. The filter housing 1 is fixed in the working position, and the inlet pipe 4 and outlet pipe 5 are connected to the external natural gas pipeline. The filter element 3 is installed into the filter shell 2, making it contact the mounting ring 12. The mounting groove 24 provides the structure, ensuring the filter element 3 is stably installed on the mounting ring 12, guaranteeing correct installation. The positioning rod 13 is aligned and inserted into the positioning groove 14, thus maintaining stability between the mounting ring 12 and the filter housing 1. The filter shell 2 is rotated, and the threaded tube 10 and threaded wall 11 cooperate to connect the filter shell 2 to the filter housing 1. The positioning rod 13 is restrained by the cooperation of the positioning groove 14, sliding into the positioning groove 14, thus keeping the filter element 3 supported by the mounting ring 12. The pressure tube 7 remains stable and is not affected by the rotation of the filter housing 2. It maintains stable contact with the pressure tube 7. As the filter housing 2 carries the filter element 3 upward, the pressure tube 7 contacts the filter element 3 through the fitting cover 22 and covers the filter element 3. With the support of the fixing ring 8, the pressure spring 9 applies downward pressure, causing the pressure tube 7 to adhere tightly to the filter element 3 through the fitting cover 22. This ensures a stable fit between the filter element 3 and the separator tube 6. Under the action of pressure, the second sealing ring 23 and the third sealing ring 25 are in tight contact with the filter element 3, ensuring a sealing effect. The first sealing ring 21 also ensures a sealing effect between the pressure tube 7 and the separator tube 6. In addition, the support ring 19 provides support and cooperates with the sliding ring 20 to provide a restraining structure, preventing the pressure tube 7 from falling off when it lacks support.

[0051] When the equipment is filtering, natural gas enters the equipment through the inlet pipe 4, flows into the inside of the partition cover, and flows into the filter element 3 under the guidance of the partition pipe 6 and the compression pipe 7. The filter element 3 provides filtration capacity to filter the natural gas. The filtered gas is discharged from the outlet pipe 5 on the outside of the filter element 3, while the filtered waste remains inside the filter element 3. It is guided by the guide hole 15, so that the liquid contaminants filtered by the filter element 3 flow downward and enter the drain pipe 16. Opening the control valve 17 can discharge the contaminants, reduce the filtration pressure inside the filter element 3, extend the service life of the filter element 3, and reduce the frequency of disassembling the equipment to replace the filter element 3. In addition, the one-way valve 18 restricts the flow of contaminants in the drain pipe 16 to ensure a stable flow and prevent external substances from entering and affecting the inside of the filter element 3.

[0052] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pipeline natural gas filter, comprising a filter base (1) and a filter housing (2), wherein a filter element (3) is disposed in the filter housing (2), and the filter base (1) cooperates with the filter housing (2) and the filter element (3), characterized in that: The filter base (1) has an air inlet pipe (4) at one end and an air outlet pipe (5) at the other end. The filter base (1) has a partition pipe (6) inside. The air inlet pipe (4) is connected to the inner side of the partition pipe (6), and the air outlet pipe (5) is connected to the outer side of the partition pipe (6). The outer end of the partition pipe (6) is slidably connected to a pressing pipe (7). The partition pipe (6) has a fixing ring (8) on it. The lower end of the fixing ring (8) has a pressure spring (9). The pressure spring (9) cooperates with the pressing pipe (7). The pressing pipe (7) cooperates with the filter element (3). The filter housing (2) has a threaded tube (10) at its upper end, and the filter seat (1) has a threaded wall (11) inside. The threaded tube (10) and the threaded wall (11) are engaged. The filter housing (2) has a rotating connection to an installation ring (12), and the outer end of the installation ring (12) has a positioning rod (13). The filter seat (1) has a positioning groove (14) inside, and the positioning rod (13) is engaged with the positioning groove (14).

2. A pipeline natural gas filter according to claim 1, characterized in that: The filter housing (2) has a flow guide hole (15) inside, and a drain pipe (16) is provided at the lower end of the filter housing (2). The flow guide hole (15) is connected to the drain pipe (16), and a control valve (17) is provided at the lower end of the drain pipe (16).

3. A pipeline natural gas filter according to claim 2, characterized in that: A check valve (18) is provided between the control valve (17) and the drain pipe (16).

4. A pipeline natural gas filter according to claim 1, characterized in that: The lower end of the separator tube (6) is provided with a support ring (19), and the upper end of the clamping tube (7) is provided with a sliding ring (20). The sliding ring (20) cooperates with the support ring (19).

5. A pipeline natural gas filter according to claim 4, characterized in that: The sliding ring (20) and the support ring (19) are provided with a first sealing ring (21) on their inner sides.

6. A pipeline natural gas filter according to claim 1, characterized in that: The lower end of the compression tube (7) is provided with a fitting cover (22), which cooperates with the filter element (3), and a second sealing ring (23) is provided on the inner side of the fitting cover (22).

7. A pipeline natural gas filter according to claim 1, characterized in that: The mounting ring (12) has a mounting groove (24) which is engaged with the filter element (3).

8. A pipeline natural gas filter according to claim 7, characterized in that: A third sealing ring (25) is provided on the inner side of the mounting groove (24).

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