Natural gas purification device

Abstract

The utility model provides a natural gas purification device which comprises a gas inlet pipeline, a distribution pipeline, a solid particle purification unit, a gas outlet pipeline and a valve, according to the utility model, the spare distribution pipeline is arranged, so that when the solid particle purification unit needs to be cleaned or replaced, the solid particle purification unit needing to be replaced and cleaned can be separated from a conveying pipe network of the natural gas pipeline only by opening and closing related valves; therefore, the process that the filter element can be cleaned and replaced only after gas is stopped for a period of time is eliminated, and continuous conveying of natural gas is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas transportation, in particular to a natural gas purification device. Background Art

[0002] Natural gas is mainly composed of methane (85%) and a small amount of ethane (9%), propane (3%), nitrogen (2%) and butane (1%). It is stored in underground porous rock formations, including oilfield gas, gas field gas, coalbed methane, mud volcano gas and biogenic gas, and a small amount comes from coal seams. It is a high-quality fuel and chemical raw material. Natural gas contains many impurities, including liquid impurities such as water and oil, heavy hydrocarbons, solid impurities such as mud, rock particles, ferrous sulfide, etc., and gas impurities such as H2S and CO2. H2S is highly toxic, so it needs to be filtered. At the same time, natural gas containing other mixed impurities will produce more harmful substances when burned, which will not only pollute the environment but also cause damage to the human body. Therefore, it is necessary to filter during the transportation of natural gas.

[0003] Most of the existing natural gas filtration uses natural gas filters, and when purifying solid particle impurities, the solid particle purification devices used mostly use filter element filtration. However, when using the existing natural gas solid particle purification devices, it is necessary to stop the gas for a period of time to clean and replace the filter element, which has a certain impact on the continuous delivery of natural gas. Utility Model Content

[0004] The purpose of the utility model is to design a natural gas purification device to solve the problems raised by the background technology. To achieve the above purpose, the utility model provides the following technical solutions: comprising two distribution pipes connected to the air inlet pipe, a solid particle purification unit installed in the distribution pipes, and an air outlet pipe connected to the two distribution pipes; the solid particle purification unit is connected to the distribution pipes through a flange, and valves are provided on the distribution pipes on both sides of the solid particle purification unit.

[0005] Furthermore, the solid particle purification unit includes an outer tube with flanges at both ends, an annular filter element fixedly connected to the inside of the outer tube, and blocking plates detachably mounted on both ends of the annular filter element.

[0006] Furthermore, the annular filter element includes several layers of annular filter plates connected by isolation plates, the isolation plate is fixedly connected to the outer circle of the innermost annular filter plate, the isolation plates are fixedly connected to the insides of the other annular filter plates, and the outer circle of the outermost annular filter plate is connected to the outer tube through the isolation plate.

[0007] Furthermore, the filter holes on the several layers of the annular filter plates close to the air inlet pipe are directly and gradually reduced from the outside to the inside, and the filter holes on the annular filter plates close to the air outlet pipe are directly and gradually reduced from the inside to the outside.

[0008] Furthermore, a plurality of notches are provided on one side of the blocking plate close to the annular filter plate, and the ends of the annular filter plate are embedded in the notches.

[0009] Furthermore, a handle is provided on the blocking plate.

[0010] Furthermore, a buffer tube is provided between the outer tube and the air intake pipe.

[0011] Furthermore, the gas outlet pipeline is also connected to a desulfurizer, and the desulfurizer includes a tank body connected to the gas outlet pipeline, a pressure equalizing member fixed to the bottom of the tank body, and a desulfurizer layer installed in the middle of the tank body.

[0012] Furthermore, the pressure equalizing member comprises a truncated cone fixedly connected to the air inlet of the tank body, the top of the truncated cone is aligned with the air inlet, a plurality of first through holes are arranged on the top of the truncated cone, and a pressure dividing groove is arranged on the side wall of the truncated cone.

[0013] Furthermore, a pressure dividing plate is fixedly connected to the top of the truncated table via a connecting rod, a second through hole is provided on the pressure dividing plate, and the second through hole is offset from the first through hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model is provided with a spare distribution pipeline. When the solid particle purification unit needs to be cleaned or replaced, the solid particle purification unit that needs to be replaced and cleaned can be separated from the transmission network of the natural gas pipeline only by opening and closing the relevant valves, thereby eliminating the process of cleaning and replacing the filter element after stopping the gas for a period of time, thereby ensuring the continuous transmission of natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial cross-sectional schematic diagram of a desulfurizer;

[0019] Figure 3 It is a partial cross-sectional schematic diagram of a solid particle purification unit.

[0020] Among them: 1. Air intake pipe; 2. Distribution pipe; 3. Buffer pipe; 4. Solid particle purification unit; 5. Desulfurizer; 6. Desulfurizer layer; 7. Tank body; 8. Air intake hole; 9. First through hole; 10. Second through hole; 11. Connecting rod; 12. Pressure dividing plate; 13. Cone; 14. Pressure dividing groove; 15. Flange; 16. Outer pipe; 17. Isolation plate; 18. Annular filter plate; 19. Blocking plate; 20. Handle. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] Example: Please refer to Figure 1-3A natural gas purification device comprises two distribution pipes 2 connected with an air inlet pipe 1, a solid particle purification unit 4 installed in the distribution pipes 2 and an air outlet pipe connected with the two distribution pipes 2; the solid particle purification unit 4 is connected with the distribution pipes 2 through a flange 15, and valves are arranged on the distribution pipes 2 on both sides of the solid particle purification unit 4; when the solid particle purification unit 4 needs to be cleaned or replaced, the solid particle purification unit 4 that needs to be replaced and cleaned can be separated from the transmission pipe network of the natural gas pipeline by opening and closing the relevant valves, thereby eliminating the need to stop the gas supply for a period of time. The filter element can be cleaned and replaced in order to ensure the continuous delivery of natural gas; in this embodiment, the solid particle purification unit 4 includes an outer tube 16 with flanges 15 at both ends, an annular filter element fixedly connected to the inside of the outer tube 16, and plugging plates 19 detachably installed at both ends of the annular filter element, the annular filter element includes a plurality of layers of annular filter plates 18 connected by isolation plates 17, the isolation plates 17 are fixedly connected to the outer circumference of the innermost annular filter plate 18, the isolation plates 17 are fixedly connected to the inside of the other annular filter plates 18, and the outer circumference of the annular filter plate 18 located at the outermost side is connected to the outer circumference of the annular filter plate 18 through the isolation plates 17. When the natural gas enters the solid particle purification unit 4, the natural gas will flow from the outermost annular filter plate 18 located on the side of the isolation plate 17 close to the air inlet pipe 1 to the innermost annular filter plate 18, and then flow through the innermost annular filter plate 18 to the innermost annular filter plate 18 located on the side of the isolation plate 17 close to the air outlet pipe, and then flow from the outermost annular filter plate 18 to the air outlet pipe; thereby, the filtration times of the natural gas are increased and the filtration quality of the natural gas is improved; in addition, the filter holes on the several layers of annular filter plates 18 close to the air inlet pipe 1 are arranged from the outside to the inside. The filter holes are directly and gradually reduced in size. The filter holes on the annular filter plate 18 close to the air outlet pipe are directly and gradually reduced in size from the inside to the outside, which further improves the filtering quality of the device for natural gas. A plurality of notches are provided on the side of the plugging plate 19 close to the annular filter plate 18. The ends of the annular filter plate 18 are embedded in the notches. When the annular filter plate 18 needs to be cleaned, it is only necessary to pull the plugging plate 19 out of the annular filter plate 18 to clean the annular filter plate 18, thereby simplifying the cleaning process and improving the cleaning efficiency of the annular filter plate 18. A handle 20 is provided on the plugging plate 19 to facilitate the disassembly and assembly of the plugging plate 19.

[0023] In this embodiment, a buffer tube 3 is further provided between the outer tube 16 and the air inlet pipe 1, which reduces the direct impact of natural gas on the plugging plate 19, effectively prevents the plugging plate 19 from falling off, and ensures the filtering quality of natural gas; the outlet pipe is also connected to a desulfurizer 5, and the desulfurizer 5 includes a tank body 7 connected to the outlet pipe, a pressure equalizing member fixed to the bottom of the tank body 7, and a desulfurizer layer 6 installed in the middle of the tank body 7, wherein the desulfurizer layer 6 is filled with a commonly used desulfurizer, which will not be described in detail here. The pressure equalizing member includes a cone 13 fixedly connected to the air inlet 8 of the tank body 7, the top of the cone 13 is aligned with the air inlet 8, a plurality of first through holes 9 are provided on the top of the cone 13, a pressure dividing groove 14 is provided on the side wall of the cone 13, and a pressure dividing plate 12 is fixedly connected to the top of the cone 13 through a connecting rod 11, and a second through hole 10 is provided on the pressure dividing plate 12, and the second through hole 10 is staggered with the first through hole 9, so that the natural gas can flow into the desulfurizer layer 6 evenly, thereby improving the desulfurization quality of the desulfurizer 5.

[0024] How it works

[0025] When the solid particle purification unit 4 needs to be cleaned or replaced, it is only necessary to close the valve on the distribution pipeline 2 where the solid particle purification unit 4 to be replaced is installed, and then open the valve on the other distribution pipeline 2 where the solid particle purification unit 4 to be replaced is installed, so that the solid particle purification unit 4 that needs to be replaced and cleaned can be separated from the transportation network of the natural gas pipeline; then the outer tube 16 in the solid particle purification unit 4 that needs to be replaced and cleaned is removed, the blocking plate 19 is pulled out, and the annular filter plate 18 can be cleaned; therefore, the utility model eliminates the process of cleaning and replacing the filter element after stopping the gas for a period of time, thereby ensuring the continuous transportation of natural gas.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A natural gas purification device, characterized in that: The invention comprises two distribution pipes (2) connected to an air inlet pipe (1), a solid particle purification unit (4) installed in the distribution pipes (2), and an air outlet pipe connected to the two distribution pipes (2); the solid particle purification unit (4) is connected to the distribution pipes (2) via a flange (15), and valves are provided on the distribution pipes (2) located on both sides of the solid particle purification unit (4).

2. The natural gas purification device according to claim 1, characterized in that: The solid particle purification unit (4) comprises an outer tube (16) with flanges (15) at both ends, an annular filter element fixed to the interior of the outer tube (16), and blocking plates (19) detachably mounted on both ends of the annular filter element.

3. The natural gas purification device according to claim 2, characterized in that: The annular filter element comprises a plurality of layers of annular filter plates (18) connected by an isolation plate (17), the isolation plate (17) being fixedly connected to the outer circle of the innermost annular filter plate (18), the isolation plate (17) being fixedly connected to the interior of the other annular filter plates (18), and the outer circle of the outermost annular filter plate (18) being connected to the outer tube (16) via the isolation plate (17).

4. The natural gas purification device according to claim 3, characterized in that: The filter holes on the several layers of the annular filter plates (18) close to the air inlet pipe (1) are directly and gradually reduced from the outside to the inside, and the filter holes on the annular filter plates (18) close to the air outlet pipe are directly and gradually reduced from the inside to the outside.

5. The natural gas purification device according to claim 3, characterized in that: A plurality of notches are provided on one side of the blocking plate (19) close to the annular filter plate (18), and the ends of the annular filter plate (18) are embedded in the notches.

6. The natural gas purification device according to any one of claims 2 to 5, characterized in that: The blocking plate (19) is provided with a handle (20).

7. The natural gas purification device according to any one of claims 2 to 5, characterized in that: A buffer tube (3) is further provided between the outer tube (16) and the air intake pipe (1).

8. The natural gas purification device according to claim 1, characterized in that: The gas outlet pipe is also connected to a desulfurizer (5), and the desulfurizer (5) comprises a tank body (7) connected to the gas outlet pipe, a pressure equalizing member fixed to the bottom of the tank body (7), and a desulfurizer layer (6) installed in the middle of the tank body (7).

9. The natural gas purification device according to claim 8, characterized in that: The pressure-equalizing member comprises a truncated cone (13) fixedly connected to the air inlet (8) of the tank body (7), the top of the truncated cone (13) is aligned with the air inlet (8), a plurality of first through holes (9) are provided on the top of the truncated cone (13), and a pressure dividing groove (14) is provided on the side wall of the truncated cone (13).

10. The natural gas purification device according to claim 9, characterized in that: The top of the truncated table (13) is fixedly connected to a pressure dividing plate (12) via a connecting rod (11); a second through hole (10) is provided on the pressure dividing plate (12); and the second through hole (10) is offset from the first through hole (9).

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