CN109097125B

CN109097125B - Natural gas purification device

Info

Publication number: CN109097125B
Application number: CN201811277105.6A
Authority: CN
Inventors: 石宏扬; 王军
Original assignee: Zhidan Clean Tech Petroleum Technology Services LLC
Current assignee: Zhidan clean tech Petroleum Technology Services LLC
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2021-05-07
Anticipated expiration: 2038-10-30
Also published as: CN109097125A

Abstract

The invention relates to the field of natural gas purification, in particular to a natural gas purification device, which comprises a sand storage mechanism, a filtering mechanism, a tank body, an air inlet pipe, a water leakage mechanism, a water storage mechanism, a water drainage mechanism and a control mechanism, wherein the sand storage mechanism is arranged on the tank body; mechanism runs through jar one end and filter funnel fixed connection of body are stored to grit, the natural gas is filtered the inside of set casing by the filter funnel through jar inside back grit in the body, moisture in the natural gas flows the inside of mechanism of leaking from the filter funnel, the grit after the filtration flows the inside of hopper from the set casing, close the inside that the valve realized the natural gas and do not pass through the set casing that is located jar external side, further rotation handle realizes can dismantle the hopper, make things convenient for the clearance of sand filtration back grit, avoid the natural gas extravagant, the contained angle between set casing and the jar body is 45 degrees, make things convenient for the flow of grit.

Description

Natural gas purification device

Technical Field

The invention relates to the field of natural gas purification, in particular to a natural gas purification device.

Background

Natural gas refers to all gases naturally occurring in nature, including gases formed by various natural processes in the air space, water space and rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenesis gas and the like), and the definition of "natural gas" which has been commonly used for a long time is a narrow definition from the energy point of view, and refers to a mixture of hydrocarbon and non-hydrocarbon gases naturally existing in the stratum. In petrogeology, oil field gas and gas field gas are commonly referred to. The composition is mainly hydrocarbon and contains non-hydrocarbon gas.

However, the natural gas is purified by the special purifying device in the inside of the direct entering pipeline in the process of mining, the pipeline which is accessed in the mining process can not primarily purify sand and stone and water of the pipeline, and the pipeline is easy to block and difficult to clean. In view of this, the present invention provides a natural gas purification apparatus, having the following features:

(1) according to the natural gas purification device, the sandstone storage mechanism penetrates through one end of the tank body and is fixedly connected with the filter hopper, natural gas passes through the inside of the tank body, then sandstone is filtered into the inside of the fixed shell by the filter hopper, moisture in the natural gas flows into the water leakage mechanism from the filter hopper, the filtered sandstone flows into the hopper from the fixed shell, the valve is closed to enable the natural gas not to pass through the inside of the fixed shell positioned on the outer side of the tank body, the hopper can be disassembled by further rotating the handle, the sandstone is convenient to clean after sand filtration, natural gas waste is avoided, the included angle between the fixed shell and the tank body is 45 degrees, and the sandstone can conveniently flow.

(2) According to the natural gas purification device, filtered water flows into the water storage mechanism from the water leakage mechanism, water in the water tank flows into the fixed cylinder from the overflow groove, the floating block floats when the water in the fixed cylinder reaches a certain amount, the connecting plate is electrically connected with the metal plate, finally the water tank is started by the electromagnetic valve to start water drainage, the top surface of the overflow groove is higher than that of the base plate, the height of the connecting plate is smaller than the distance between the bottom of the water tank and the overflow groove, and the floating block descends along with the descending of the water level, so that natural gas leakage from the water leakage pipe due to the fact that the water in the water tank is completely drained is avoided.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a natural gas purification device, a sand storage mechanism penetrates through one end of a tank body and is fixedly connected with a filter hopper, sand passes through the inside of the tank body, then is filtered into the inside of a fixed shell by the filter hopper, moisture in the natural gas flows into a water leakage mechanism from the filter hopper, the filtered sand flows into a hopper from the fixed shell, a valve is closed to ensure that the natural gas does not pass through the inside of the fixed shell positioned on the outer side of the tank body, a handle is further rotated to ensure that the hopper can be disassembled, the sand is convenient to clean after sand filtration, natural gas waste is avoided, an included angle between the fixed shell and the tank body is 45 degrees, the sand flows conveniently, the filtered water flows into the inside of the water storage mechanism from the water leakage mechanism, the water positioned in a water tank flows into the inside of a fixed cylinder from an overflow groove, and further, when the water in the fixed cylinder reaches a certain amount, a floating block floats, and then realize connecting plate and metal sheet electric connection, finally realize that the solenoid valve opens the water pitcher and begin to drain, the top surface of overflow tank is higher than the top surface of backing plate, and the highly distance that is less than between water pitcher bottom and the overflow tank of connecting plate, the kicking block descends along with the decline of water level to the realization is avoided the inside water of water pitcher to put and is caused the natural gas to reveal from the water leakage pipe.

The technical scheme adopted by the invention for solving the technical problems is as follows: a natural gas purification device comprises two sand storage mechanisms, a filtering mechanism, a tank body, an air inlet pipe, a water leakage mechanism, a water storage mechanism, a water discharge mechanism and a control mechanism; a hollow cylinder column structure for carrying natural gas the top welding of the jar body has and the exploitation pipe connection the intake pipe, the internally mounted of the jar body is used for filtering the grit the filtering mechanism, two are used for storing filterable grit the grit storage mechanism runs through the one end of the jar body with filtering mechanism fixed connection, the internally mounted of the jar body has and is located the filtering mechanism bottom be used for carrying water the mechanism that leaks, the bottom intercommunication of the jar body has the water storage mechanism that is used for storing water, the lateral wall of water storage mechanism, bottom installation are used for the drainage the mechanism, the mechanism that drains with be located the water storage mechanism lateral wall control mechanism electric connection.

Specifically, the filter mechanism includes filter cell, filter funnel and fixing base, the inside fixed connection cavity round platform shape structure of the jar body the filter funnel, the lateral wall trompil the inside of filter funnel forms and is used for filtering the grit in the natural gas the filter cell, the bottom fixed connection of filter funnel is half spherical structure the fixing base.

Specifically, the sandstone storage mechanism comprises a feed inlet, a valve, two fixed shells, a trough, a hopper, a sealing port, a sealing plug, a handle and a clamping groove, wherein the fixed shells with hollow cylindrical structures are fixedly connected with the side wall of the filter hopper relatively, the hopper with the hollow cylindrical structures is connected with the inner threads of the fixed shells, the feed inlet is arranged at one end of the fixed shells close to the filter hopper, the valve used for interrupting natural gas is arranged at one end of the fixed shells close to the filter hopper, the trough used for containing sandstone is arranged at one end of the hopper close to the valve, the sealing port with a trapezoidal structure cross section is arranged at one end of the fixed shells far away from the feed inlet, the sealing port is clamped in the sealing port on the surface of the hopper, the handle with a triangular structure cross section is arranged at one end of the hopper far away from the side wall of the fixed connection of the trough, the fixed shell with the contained angle between the jar body is 45 degrees.

Specifically, the water leakage mechanism comprises a water receiving disc, a water leakage groove and a connecting frame, the water receiving disc which is arranged at the bottom of the filter hopper and has a hollow circular truncated cone-shaped structure is arranged in the tank body, the maximum diameter of the water receiving disc and the filter hopper is equal to the minimum inner diameter of the tank body, the water leakage groove is formed in the bottom of the water receiving disc relatively, and the bottom of the water receiving disc is communicated with the connecting frame which is hollow in the tank body.

Specifically, the water storage mechanism comprises an air outlet pipe, a water tank and an overflow tank, the bottom of the tank body is communicated with the water tank in a hollow cylindrical structure, the edge of the top of the side wall of the water tank is communicated with the air outlet pipe for exhausting, and the edge of the bottom of the side wall of the water tank is provided with the overflow tank.

Specifically, the water discharging mechanism, the water leaking pipe, the electromagnetic valve, the power line and the battery are arranged, the bottom of the water tank is communicated with the water leaking pipe used for discharging water, the electromagnetic valve used for controlling water flow is installed on the side wall of the water leaking pipe, the electromagnetic valve is electrically connected with the power line, and the battery is installed on the side wall of the water tank.

Specifically, the control mechanism comprises an air leakage hole, metal plates, connecting plates, a sliding block, a floating block, a fixed cylinder and a backing plate, the side wall of the water tank is provided with the fixed cylinder with the air leakage hole arranged at the top part of the hollow cylindrical structure, the fixed cylinder is communicated with the fixed cylinder through the overflow groove, the backing plate positioned at the bottom part of the overflow groove is arranged at the bottom part of the fixed cylinder, the floating block with the cylindrical structure is connected to the inside of the fixed cylinder in a sliding manner, the top part of the floating block is fixedly connected with the connecting plate with the cylindrical structure, the connecting plate is electrically connected with the metal plates with the arc structures arranged opposite to the side wall of the fixed cylinder, the battery is electrically connected with one of the metal plates through the power line, the other metal plate is electrically connected with the electromagnetic valve, and the distance between the two metal plates is equal to the maximum diameter of the connecting plate, the height of the connecting plate is larger than that of the metal plate, the side wall of the connecting plate is fixedly connected with the sliding block in a triangular prism structure, and the distance between the water tank and the overflow tank is larger than that of the connecting plate.

The invention has the beneficial effects that:

(1) according to the natural gas purification device, the sandstone storage mechanism penetrates through one end of the tank body and is fixedly connected with the filter hopper, natural gas passes through the inside of the tank body, then sandstone is filtered into the inside of the fixed shell by the filter hopper, moisture in the natural gas flows into the inside of the water leakage mechanism (5) from the filter hopper, the filtered sandstone flows into the hopper from the fixed shell, the valve is closed to enable the natural gas not to pass through the inside of the fixed shell positioned on the outer side of the tank body, the hopper can be disassembled by further rotating the handle, the sandstone is convenient to clean after sand filtration, natural gas waste is avoided, the included angle between the fixed shell and the tank body is 45 degrees, and the sandstone is convenient to flow.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of the overall structure of a preferred embodiment of a natural gas purification apparatus according to the present invention;

FIG. 2 is a schematic view of the sand storage mechanism of FIG. 1;

FIG. 3 is a schematic view of the tank, the water leaking mechanism and the water storing mechanism shown in FIG. 1;

fig. 4 is a schematic view of the control mechanism shown in fig. 1.

In the figure: 1. sandstone storage mechanism, 11, feed inlet, 12, valve, 13, fixed shell, 14, silo, 15, hopper, 16, sealing port, 17, sealing plug, 18, handle, 19, clamping groove, 2, filtering mechanism, 21, filtering groove, 22, filtering funnel, 23, fixed seat, 3, tank body, 4, air inlet pipe, 5, water leakage mechanism, 51, water receiving tray, 52, water leakage tank, 53, connecting frame, 6, water storage mechanism, 61, air outlet pipe, 62, water tank, 63, overflow tank, 7, water drainage mechanism, 71, water leakage pipe, 72, electromagnetic valve, 73, power wire, 74, battery, 8, control mechanism, 81, air leakage hole, 82, metal plate, 83, connecting plate, 84, slide block, 85, floating block, 86, fixed cylinder, 87 and backing plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-4, the natural gas purification device of the present invention comprises two sandstone storage mechanisms 1, a filtering mechanism 2, a tank 3, an air inlet pipe 4, a water leakage mechanism 5, a water storage mechanism 6, a water discharge mechanism 7 and a control mechanism 8; a welding of the top of the jar body 3 for carrying the hollow cylinder structure of natural gas has with the exploitation pipe connection intake pipe 4, the internally mounted of the jar body 3 is used for filtering the grit filter mechanism 2, two are used for storing filterable grit the grit stores the mechanism 1 and runs through the one end of the jar body 3 with filter mechanism 2 fixed connection, the internally mounted of the jar body 3 is located the 2 bottoms of filter mechanism are used for carrying water leak the mechanism 5, the bottom intercommunication of the jar body 3 has the water storage mechanism 6 that is used for storing water, the lateral wall of water storage mechanism 6, bottom installation are used for draining the mechanism 7 that drains, drain the mechanism 7 with be located the 6 lateral walls of water storage mechanism 8 electric connection of control mechanism.

Specifically, filtering mechanism 2 includes filter cell 21, filter 22 and fixing base 23, the inside fixed connection cavity round platform shape structure of the jar body 3 the filter 22, the lateral wall trompil the inside of filter 22 forms the filter cell 21 that is arranged in filtering the grit in the natural gas, the bottom fixed connection of filter 22 is hemispherical structure the fixing base 23, will intake pipe 4 and the natural gas line intercommunication in the exploitation realize that the natural gas enters into the inside of the jar body 3, the grit in the natural gas is by during the exploitation filter 22 separates, is hemispherical fixing base 23 and is convenient for the grit and flows.

Specifically, the gravel storage mechanism 1 comprises a feed port 11, a valve 12, two fixed shells 13, a trough 14, a hopper 15, a sealing port 16, a sealing plug 17, a handle 18 and a clamping groove 19, wherein the fixed shell 13 with the side wall of the filter 22 in a hollow cylindrical structure is fixedly connected relatively, the hopper 15 with the hollow cylindrical structure is connected with the internal thread of the fixed shell 13, the feed port 11 is arranged at one end of the fixed shell 13 close to the filter 22, the valve 12 for interrupting natural gas is arranged at one end of the fixed shell 13 close to the filter 22, the trough 14 for accommodating gravel is arranged at one end of the hopper 15 close to the valve 12, the sealing port 16 with the trapezoidal cross section is arranged at one end of the fixed shell 13 away from the feed port 11, and the sealing plug 17 on the surface of the hopper 15 is clamped inside the sealing port 16, hopper 15 deviates from one end fixed connection lateral wall of silo 14 sets up the cross-section and is the triangle-shaped structure handle 18 of draw-in groove 19, set casing 13 with the contained angle between the jar body 3 is 45 degrees, and separated grit flows from filter 22 to the inside of set casing 13, valve 12 is opened this moment, sealing plug 17 block with sealing port 16 avoids gas leakage, and further grit flows to the inside of hopper 15 is collected, when being right the inside grit of silo 14 is cleared up, will valve 12 closes, and the natural gas then does not pass through the inside of set casing 13, rotates handle 18 realizes the dismantlement of hopper 15, finally clears up the inside grit of silo 14, and the natural gas flows away from the bottom of filter 22.

Specifically, the water leakage mechanism 5 includes a water pan 51, a water leakage groove 52 and a connecting frame 53, the water pan 51 located at the bottom of the filter 22 and having a hollow truncated cone-shaped structure is installed inside the tank 3, the maximum diameters of the water pan 51 and the filter 22 are equal to the minimum inner diameter of the tank 3, the water leakage groove 52 is formed at the bottom of the water pan 51, the connecting frame 53 having a hollow inside is communicated with the bottom of the water pan 51, and water in natural gas flows from the filter 22 to the inside of the water pan 51 and further flows from the water pan 51 to the inside of the connecting frame 53.

Specifically, the water storage mechanism 6 includes an air outlet pipe 61, a water tank 62 and an overflow tank 63, the bottom of the tank body 3 is communicated with the water tank 62 in a hollow cylindrical structure, the top edge of the side wall of the water tank 62 is communicated with the air outlet pipe 61 for air exhaust, the bottom edge of the side wall of the water tank 62 is provided with the overflow tank 63, water flows into the water tank 62 from the connecting frame 53, and further water in the water tank 62 flows into the control mechanism 8 from the overflow tank 63.

Specifically, the water discharging mechanism 7, the water leakage pipe 71, the electromagnetic valve 72, the power line 73 and the battery 74 are connected to the bottom of the water tank 62, the water leakage pipe 71 is used for discharging water, the electromagnetic valve 72 is installed on the side wall of the water leakage pipe 71 and used for controlling water flow, the electromagnetic valve 72 is electrically connected with the power line 73, the battery 74 is installed on the side wall of the water tank 62, the control mechanism 8 is floated after the water in the control mechanism 8 reaches a certain amount, and the control mechanism 8 can be controlled by further connecting the battery 74 to the power supply.

Specifically, the control mechanism includes an air leakage hole 81, metal plates 82, a connecting plate 83, a slider 84, a floating block 85, a fixed cylinder 86 and a backing plate 87, the side wall of the water tank 62 is provided with the fixed cylinder 86 with the air leakage hole 81 opened at the top thereof, the fixed cylinder 86 is communicated with the fixed cylinder 86 through the overflow groove 63, the bottom of the fixed cylinder 86 is provided with the backing plate 87 positioned at the bottom of the overflow groove 63, the fixed cylinder 86 is connected with the floating block 85 with a cylindrical structure in a sliding manner, the top of the floating block 85 is fixedly connected with the connecting plate 83 with a cylindrical structure, the connecting plate 83 is electrically connected with the metal plates 82 with an arc structure arranged opposite to the side wall of the fixed cylinder 86, the battery 74 is electrically connected with one of the metal plates 82 through the power cord 73, and the other metal plate 82 is electrically connected with the electromagnetic valve 72, the distance between the two metal plates 82 is equal to the maximum diameter of the connecting plate 83, the height of the connecting plate 83 is greater than that of the metal plates 82, the side wall of the connecting plate 83 is fixedly connected with the slide block 84 in a triangular prism structure, the distance between the water tank 62 and the overflow groove 63 is greater than that of the connecting plate 83, the water in the water tank 62 flows from the overflow groove 63 to the inside of the fixed cylinder 86, the floating block 85 is further floated when the water in the fixed cylinder 86 reaches a certain amount, the connecting plate 83 is electrically connected with the metal plates 82, finally the electromagnetic valve 72 opens the water tank 62 to start water discharge, the top surface of the overflow groove 63 is higher than the top surface of the backing plate 87, the height of the connecting plate 83 is less than the distance between the bottom of the water tank 62 and the overflow groove 63, and the floating block 85 descends along with the descending of the water level, moisture is always kept between the water tank 62 and the overflow groove 63, so that natural gas leakage from the water leakage pipe 71 caused by the fact that the water in the water tank 62 is completely discharged is avoided.

When the natural gas tank is used, firstly, the gas inlet pipe 4 is communicated with a natural gas pipeline in exploitation to realize that natural gas enters the tank body 3, sand and stone in the natural gas are separated by the filter hopper 22 during exploitation, the hemispherical fixing seat 23 is convenient for the sand and stone to flow, the separated sand and stone flow from the filter hopper 22 to the inside of the fixing shell 13, the valve 12 is opened at the moment, the sealing plug 17 is clamped with the sealing port 16 to avoid gas leakage, further sand and stone flow to the inside of the hopper 15 to be collected, when the sand and stone in the hopper 14 are cleaned, the valve 12 is closed, the natural gas does not pass through the inside of the fixing shell 13, the handle 18 is rotated to realize the disassembly of the hopper 15, and finally the sand and stone in the hopper 14 are cleaned; then, the natural gas flows away from the bottom of the filter 22, the water in the natural gas flows from the filter 22 to the inside of the water pan 51, and further flows from the water pan 51 to the inside of the connecting frame 53, and the water in the water tank 62 flows from the overflow tank 63 to the inside of the fixed cylinder 86; finally, when the internal water of the fixed cylinder 86 reaches a certain amount, the floating block 85 floats, so that the connection plate 83 is electrically connected with the metal plate 82, finally, the electromagnetic valve 72 opens the water tank 62 to start water discharging, the top surface of the overflow groove 63 is higher than that of the backing plate 87, the height of the connection plate 83 is smaller than the distance between the bottom of the water tank 62 and the overflow groove 63, the floating block 85 descends along with the descending of the water level, the water is guaranteed to be always stored between the water tank 62 and the overflow groove 63, the natural gas is prevented from leaking from the water leakage pipe 71 when the internal water of the water tank 62 is completely discharged, the electromagnetic valve 72 is closed when the residual metal plate 82 of the connection plate 83 is separated, and the water leakage pipe 71.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A natural gas purification device is characterized in that: comprises two sand storage mechanisms (1), a filtering mechanism (2), a tank body (3), an air inlet pipe (4), a water leakage mechanism (5), a water storage mechanism (6), a water drainage mechanism (7) and a control mechanism (8); the top of the tank body (3) of a hollow cylindrical structure for conveying natural gas is welded with the gas inlet pipe (4) connected with an exploitation pipeline, the filtering mechanisms (2) for filtering sand and stone are arranged in the tank body (3), two sand and stone storage mechanisms (1) for storing filtered sand and stone penetrate through one end of the tank body (3) and are fixedly connected with the filtering mechanisms (2), the inside of the tank body (3) is provided with the water leakage mechanism (5) which is positioned at the bottom of the filtering mechanism (2) and is used for conveying water, the bottom of the tank body (3) is communicated with the water storage mechanism (6) for storing water, the side wall and the bottom of the water storage mechanism (6) are provided with the water discharging mechanism (7) for discharging water, the water discharging mechanism (7) is electrically connected with the control mechanism (8) positioned on the side wall of the water storage mechanism (6);

the filtering mechanism (2) comprises a filtering tank (21), a filtering hopper (22) and a fixed seat (23), the filtering hopper (22) with a hollow truncated cone-shaped structure is fixedly connected inside the tank body (3), the filtering tank (21) used for filtering sand and stone in natural gas is formed inside the filtering hopper (22) with an opening in the side wall, and the fixed seat (23) with a hemispherical structure is fixedly connected to the bottom of the filtering hopper (22);

the sandstone storage mechanism (1) comprises a feed port (11), a valve (12), two fixed shells (13), a trough (14), a hopper (15), a sealing port (16), a sealing plug (17), a handle (18) and a clamping groove (19), wherein the side wall of the filter hopper (22) is fixedly connected with the fixed shell (13) in a hollow cylindrical structure relatively, the hopper (15) is connected with the inner thread of the fixed shell (13) in a hollow cylindrical structure, one end of the fixed shell (13) close to the filter hopper (22) is provided with the feed port (11), one end of the fixed shell (13) close to the filter hopper (22) is provided with the valve (12) for interrupting natural gas, one end of the hopper (15) close to the valve (12) is provided with the trough (14) for accommodating sandstone, one end of the fixed shell (13) far away from the feed port (11) is provided with the sealing port (16) with a trapezoidal structure section, the sealing plug (17) positioned on the surface of the hopper (15) is clamped inside the sealing opening (16), one end of the hopper (15) departing from the trough (14) is fixedly connected with the handle (18) of which the side wall is provided with the clamping groove (19) with the triangular section, and the included angle between the fixed shell (13) and the tank body (3) is 45 degrees;

the water leakage mechanism (5) comprises a water receiving disc (51), a water leakage groove (52) and a connecting frame (53), the water receiving disc (51) which is of a hollow circular truncated cone-shaped structure and is positioned at the bottom of the filter hopper (22) is installed inside the tank body (3), the maximum diameters of the water receiving disc (51) and the filter hopper (22) are equal to the minimum inner diameter of the tank body (3), the water leakage groove (52) is formed in the bottom of the water receiving disc (51) relatively, and the bottom of the water receiving disc (51) is communicated with the connecting frame (53) which is hollow inside;

the water storage mechanism (6) comprises an air outlet pipe (61), a water tank (62) and an overflow tank (63), the bottom of the tank body (3) is communicated with the water tank (62) in a hollow cylindrical structure, the top edge of the side wall of the water tank (62) is communicated with the air outlet pipe (61) for exhausting air, and the bottom edge of the side wall of the water tank (62) is provided with the overflow tank (63);

the water discharging device comprises a water discharging mechanism (7), a water leakage pipe (71), an electromagnetic valve (72), a power line (73) and a battery (74), wherein the water leakage pipe (71) for discharging water is communicated with the bottom of the water tank (62), the electromagnetic valve (72) for controlling water flow is installed on the side wall of the water leakage pipe (71), the electromagnetic valve (72) is electrically connected with the power line (73), and the battery (74) is installed on the side wall of the water tank (62);

the control mechanism comprises an air leakage hole (81), a metal plate (82), a connecting plate (83), a sliding block (84), a floating block (85), a fixed cylinder (86) and a backing plate (87), the side wall of the water tank (62) is provided with the fixed cylinder (86) with the air leakage hole (81) formed in the top of a hollow cylindrical structure, the fixed cylinder (86) is communicated with the fixed cylinder (86) through an overflow groove (63), the bottom of the fixed cylinder (86) is provided with the backing plate (87) positioned at the bottom of the overflow groove (63), the inner part of the fixed cylinder (86) is in sliding connection with the floating block (85) which is in a cylindrical structure, the top of the floating block (85) is fixedly connected with the connecting plate (83) which is in a cylindrical structure, the connecting plate (83) and the side wall of the fixed cylinder (86) are oppositely provided with the metal plate (82) which is in an arc structure and electrically connected with the metal plate, the battery (74) is electrically connected with one metal plate (82) through the power line (73), the other metal plate (82) is electrically connected with the electromagnetic valve (72), the distance between the two metal plates (82) is equal to the maximum diameter of the connecting plate (83), the height of the connecting plate (83) is greater than that of the metal plates (82), the side wall of the connecting plate (83) is fixedly connected with the sliding block (84) in a triangular prism structure, and the distance between the water tank (62) and the overflow tank (63) is greater than that of the connecting plate (83);

when the natural gas cleaning tank is used, firstly, the gas inlet pipe (4) is communicated with a natural gas pipeline in exploitation, natural gas enters the tank body (3), sand and stone in the natural gas are separated by the filter hopper (22) in the exploitation, the hemispherical fixing seat (23) is convenient for the sand and stone to flow, the separated sand and stone flow into the fixed shell (13) from the filter hopper (22), the valve (12) is opened at the moment, the sealing plug (17) is clamped with the sealing port (16) to avoid gas leakage, further sand and stone flow into the hopper (15) to be collected, when the sand and stone in the hopper (14) are cleaned, the valve (12) is closed, the natural gas does not pass through the inside of the fixed shell (13), the handle (18) is rotated to realize the disassembly of the hopper (15), and finally the sand and stone in the hopper (14) are cleaned; then, the natural gas flows away from the bottom of the filter hopper (22), water in the natural gas flows into the inside of the water receiving tray (51) from the filter hopper (22), further flows into the inside of the connecting frame (53) from the water receiving tray (51), and water in the water tank (62) flows into the inside of the fixed cylinder (86) from the overflow groove (63); and finally, the floating block (85) is floated when the internal water of the fixed cylinder (86) reaches a certain amount, so that the connection plate (83) is electrically connected with the metal plate (82), the electromagnetic valve (72) is finally realized to open the water tank (62) to start water discharging, the top surface of the overflow tank (63) is higher than the top surface of the cushion plate (87), the height of the connection plate (83) is smaller than the distance between the bottom of the water tank (62) and the overflow tank (63), the floating block (85) descends along with the descending of the water level, the water is guaranteed to be always stored between the water tank (62) and the overflow tank (63), the natural gas is prevented from leaking from the water leakage pipe (71) when the internal water of the water tank (62) is completely discharged, the electromagnetic valve (72) is closed when the metal plate (82) of the connection plate (83) is separated, and the water leakage pipe (71) stops.