Natural gas filtering device

Abstract

The utility model discloses a natural gas filtering device, which relates to the technical field of natural gas filtering, and comprises a filter body, the filter body is composed of a gas inlet pipe, a gas outlet pipe and a cylinder, the gas inlet pipe is fixedly communicated with the upper part of one side of the cylinder, and the gas outlet pipe is fixedly communicated with the lower part of one side of the cylinder. The multi-layer filter element can filter granular and powdery solid impurities in natural gas and can also filter harmful gas in the natural gas, moisture in the natural gas is filtered through the drying layer, the safety of the natural gas during combustion is guaranteed, when the filter element needs to be replaced, the filter element can be replaced, and the filter element can be replaced conveniently. The air inlet of the air inlet is closed, the handle is pulled to separate the sealing door from the barrel body, the sealing door is rotated by 180 degrees to expose the filter element, the saturated filter element is taken out through the embedded handle of the filter element, a new filter element is put in, and then the sealing door is closed, so that the traditional tedious steps of disassembling an end cover to replace the filter element are replaced.

Description

Technical Field

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

[0002] In the gas transmission pipeline, it is usually necessary to install a natural gas filter device. The natural gas filter device includes an air inlet and an air outlet, and a filter structure is arranged between the air inlet and the air outlet. When the gas enters the natural gas filter device through the air inlet, the impurities therein will be blocked by the filter structure, and the filtered gas will be discharged from the air outlet of the natural gas filter device.

[0003] Natural gas is mainly composed of hydrocarbon gases such as methane, but it is also mixed with certain impurities and particulate matter, such as water, sulfide, carbon dioxide, hydrogen, etc. These impurities and particulate matter will cause certain harm to downstream equipment and the environment. For example, water will corrode and condense pipelines and equipment, and carbon dioxide and hydrogen will affect the calorific value and safety of gas. In addition, a large amount of iron powder will be generated during the construction and operation of natural gas pipelines. A large amount of iron powder will accumulate in the natural gas filter, which will cause unstable gas pressure for users and impure gas combustion flames. At present, when installing the natural gas filter device, the filter structure is first installed on the pipe body of the natural gas filter device through the installation port, and then the installation port is sealed through the end cover. When replacing the filter element, the end cover needs to be removed and replaced, but the end cover is inconvenient to disassemble and install, and multiple screws need to be removed to remove the end cover, which makes the replacement or maintenance of the filter structure very inconvenient. Utility Model Content

[0004] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a natural gas filtering device, which includes a filter body, the filter body is composed of an air inlet pipe, an air outlet pipe and a cylinder, the air inlet pipe is fixedly connected to the upper part of one side of the cylinder, the air outlet pipe is fixedly connected to the lower part of one side of the cylinder, a semicircular opening is provided on one side of the cylinder, the cylinder is provided with an annular groove, the annular groove is located above the semicircular opening, the annular ring is slidably arranged in the annular groove, a semicircular groove is provided in the cylinder, an arc-shaped groove is provided on one side of the semicircular groove, a filter element is installed in the semicircular groove, and a sealing structure is installed on the annular ring;

[0005] The filter element is composed of a circular shell and multiple filter layers. One side of the circular shell is provided with an embedded handle. The other side of the circular shell is fixedly connected to an arc-shaped clamping plate, and the arc-shaped clamping plate is clamped in the arc-shaped clamping groove.

[0006] The multi-layer filter layers are, from top to bottom, a large filter screen, a powder adsorption layer, a drying layer and a gas filter layer;

[0007] The large filter mesh facilitates the entry of natural gas and impurities into the filter element, reducing the large amount of particle impurities adhering to the upper side of the filter element, which causes the particles and powder impurities to float out during subsequent removal;

[0008] The powder adsorption layer is used to adsorb the iron powder and other powder impurities remaining in the pipeline to avoid affecting the subsequent combustion of natural gas and impurities in the flame;

[0009] The drying layer is used to absorb moisture in the natural gas, ensure the dryness of the natural gas, and prevent the natural gas from being damp and affecting the subsequent combustion of the natural gas;

[0010] The gas filter layer is used to filter harmful gases (such as sulfide, carbon dioxide and hydrogen).

[0011] The utility model is further configured as follows: the sealing structure comprises an L-shaped plate, a rectangular plate, a spring, a square rod, a sealing door and a pair of guide rods;

[0012] The horizontal plate of the L-shaped plate is fixedly connected to one side of the annular ring, one end of the square rod passes through the horizontal plate of the L-shaped plate and is fixedly connected to the sealing door, the sealing door is a semicircular door, and the sealing door matches the semicircular opening, the other end of the square rod is fixedly connected to the rectangular plate, the spring ring is sleeved on the outside of the square rod, the spring is placed between the sealing door and the L-shaped plate, a handle is installed on the other side of the rectangular plate, one end of a pair of guide rods passes through the vertical plate of the L-shaped plate and the rectangular plate respectively, and the other end of a pair of guide rods is fixedly connected to the sealing door.

[0013] The utility model is further configured as follows: the outer ring of the sealing door is flush with the outer ring of the cylinder, and the inner ring of the sealing door matches the outer ring of the filter element.

[0014] The utility model is further configured as follows: a baffle is fixedly connected to one side of the cylinder, the baffle is located at one side of the semicircular opening, and a groove is provided at one end of the sealing door, and the groove matches the baffle.

[0015] The utility model is further configured as follows: the inner layer of the sealing door is coated with a rubber sealing layer to prevent leakage of natural gas.

[0016] The beneficial technical effect of the utility model is as follows: the multi-layer filter element of the utility model can filter particles and powdered solid impurities in natural gas, and can also filter harmful gases in natural gas. The moisture in natural gas is filtered through the drying layer, thereby ensuring the safety of natural gas combustion. When the filter element of the device needs to be replaced, the air intake of the air inlet is closed, the handle is pulled to separate the sealing door from the cylinder, the sealing door is rotated 180° to expose the filter element, the saturated filter element is taken out through the embedded handle of the filter element, a new filter element is put in, and then the sealing door is closed. This replaces the cumbersome steps of traditionally disassembling the end cover to replace the filter element, and the filter element can be replaced faster and more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a front view of the present utility model.

[0018] Figure 2 A front cross-sectional schematic diagram of the utility model is shown.

[0019] Figure 3 A bottom view of the present invention is shown.

[0020] Figure numerals 1, L-shaped plate, 2, rectangular plate, 3, spring, 4, square rod, 5, cylinder, 6, circular shell, 7, arc-shaped clamping plate, 8, annular ring, 9, sealing door, 10, guide rod, 11, baffle, 12, semicircular groove, 13, arc-shaped clamping groove, 14, groove, 15, air inlet pipe, 16, air outlet pipe. DETAILED DESCRIPTION

[0021] Please refer to the attached Figure 1-Figure 3 Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0022] The utility model provides a natural gas filtering device. Before use, a sealing door 9 is clamped in a semicircular opening, and a spring 3 is in a slightly compressed state. The sealing door 9 is tightly fitted in the semicircular opening by the rebound force of the spring 3. The outer surface of the sealing door 9 is flush with the outer surface of the cylinder 5. When using the device, the handle is pulled outward, and the handle drives the sealing door 9 to slide along the semicircular opening toward the direction of the L-shaped plate 1 through the square rod 4. The sealing door 9 drives a pair of guide rods 10 to slide outward along the L-shaped plate 1 and the rectangular plate 2. When the spring 3 is pulled outward, the sealing door 9 is pushed back and forth. When the spring 3 is in a fully compressed state, the sealing door 9 is completely separated from the semicircular opening and has a certain distance from the outer surface of the cylinder 5. The handle is pulled counterclockwise, and the handle drives the L-shaped plate 1 to rotate through the square rod 4 and a pair of guide rods 10. The L-shaped plate 1 drives the annular ring 8 to rotate along the annular groove. When the groove of the sealing door 9 is inserted into the baffle 11, stop pulling the handle and slowly release the handle. The resilience of the spring 3 pushes the sealing door 9 to fit the outer side of the cylinder 5. At this time, the movable door 9 rotates 180°, and the semicircular opening of the cylinder 5 is completely exposed. Figure 1 As shown, the embedded handle of the circular shell 6 is used to align one end of the filter element with the semicircular opening, and the circular shell 6 is pushed inward. The circular shell 6 slides along the semicircular groove 12 into the cylinder 5. After the arc-shaped clamping plate 7 of the circular shell 6 is completely inserted into the arc-shaped clamping groove 13, the embedded handle is retracted. At this time, the circular shell 6 and the filter element are completely located in the semicircular groove 12. The handle is pulled again to drive the sealing door 9 to separate from the outer surface of the cylinder 5. The handle is turned 180° clockwise, and the annular ring 8 rotates in the opposite direction. The sealing door 9 is aligned with the semicircular opening, and the handle is slowly released. The resilience of the spring 3 pushes the sealing door 9 to slide inward along the semicircular opening until the outer side of the sealing door 9 is flush with the outer side of the cylinder 5, and the sealing door 9 presses the semicircular shell 6. Figure 2 As shown, the valve of the air inlet pipe 15 is opened, and the natural gas passes through the large filter mesh, powder adsorption layer, drying layer and gas filter layer of the filter element in sequence. The iron powder and other powder impurities remaining in the pipeline are adsorbed by the powder adsorption layer to avoid affecting the subsequent combustion of the natural gas. The moisture in the natural gas is adsorbed by the drying layer to ensure the dryness of the natural gas and avoid the subsequent combustion of the natural gas affected by moisture. The harmful gases (such as sulfide, carbon dioxide and hydrogen) in the natural gas are filtered by the gas filter layer to ensure the safety of the natural gas during combustion. The filtered gas is discharged through the outlet pipe 16. When the filter element needs to be replaced, the valves of the air inlet pipe 15 and the air outlet pipe 16 are closed first, and the handle is pulled outward to open the sealing door 9. The saturated filter element is taken out through the embedded handle of the filter element, and a new filter element is placed in and the sealing door 9 is closed. The operation process is the same as above and will not be repeated. It replaces the cumbersome steps of disassembling the end cover to replace the filter element in the traditional way, and the filter element can be replaced faster and more efficiently.

[0023] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0024] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0027] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A natural gas filtering device, comprising a filter body, characterized in that: The filter body is composed of an air inlet pipe (15), an air outlet pipe (16) and a cylinder (5); the air inlet pipe (15) is fixedly connected to an upper part of one side of the cylinder (5); the air outlet pipe (16) is fixedly connected to a lower part of one side of the cylinder (5); a semicircular opening is provided on one side of the cylinder (5); the cylinder (5) is provided with an annular slide groove; the annular slide groove is located above the semicircular opening; an annular ring (8) is slidably arranged in the annular slide groove; a semicircular groove (12) is provided in the cylinder (5); an arc-shaped groove (13) is provided on one side of the semicircular groove (12); a filter element is installed in the semicircular groove (12); and a sealing structure is installed on the annular ring (8); The filter element is composed of a circular shell (6) and multiple filter layers. A built-in handle is provided on one side of the circular shell (6). An arc-shaped clamping plate (7) is fixedly connected to the other side of the circular shell (6). The arc-shaped clamping plate (7) is clamped in the arc-shaped clamping groove (13). The multi-layer filter layers are, from top to bottom, a large filter screen, a powder adsorption layer, a drying layer and a gas filter layer; The large filter mesh facilitates the entry of natural gas and impurities into the filter element, reducing the amount of particulate impurities adhering to the upper side of the filter element; The powder adsorption layer is used to adsorb iron powder and other powder impurities remaining in the pipeline; The drying layer is used to absorb moisture in the natural gas to ensure the dryness of the natural gas; The gas filter layer is used for filtering harmful gases.

2. A natural gas filtering device according to claim 1, characterized in that: The sealing structure comprises an L-shaped plate (1), a rectangular plate (2), a spring (3), a square rod (4), a sealing door (9) and a pair of guide rods (10); The horizontal plate of the L-shaped plate (1) is fixedly connected to one side of the annular ring (8); one end of the square rod (4) passes through the horizontal plate of the L-shaped plate (1) and is fixedly connected to the sealing door (9); the sealing door (9) is a semicircular door, and the sealing door matches the semicircular opening; the other end of the square rod (4) is fixedly connected to the rectangular plate (2); the spring (3) is sleeved on the outside of the square rod (4); the spring (3) is arranged between the sealing door (9) and the L-shaped plate (1); a handle is installed on the other side of the rectangular plate (2); one end of a pair of guide rods (10) passes through the vertical plate of the L-shaped plate (1) and the rectangular plate (2) respectively; the other end of the pair of guide rods (10) is fixedly connected to the sealing door (9).

3. A natural gas filtering device according to claim 2, characterized in that: The outer ring of the sealing door (9) is flush with the outer ring of the cylinder (5), and the inner ring of the sealing door (9) matches the outer ring of the filter element.

4. A natural gas filtering device according to claim 3, characterized in that: One side of the cylinder (5) is fixedly connected to a baffle (11), and the baffle (11) is located on one side of the semicircular opening. One end of the sealing door (9) is provided with a groove (14), and the groove (14) matches the baffle (11).

5. A natural gas filtering device according to claim 4, characterized in that: The inner layer of the sealing door (9) is coated with a rubber sealing layer to prevent natural gas leakage.

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