A natural gas production drainage desanding device

Abstract

The utility model discloses a natural gas exploitation drainage sand removing device belongs to natural gas filter equipment technical field. A natural gas exploitation drainage sand removing device, including main body jar, the filter separation chamber is seted up in main body jar inside, the bottom flow through interface is seted up in filter separation chamber bottom, is installed in bottom flow through interface and is equipped with main flow pipe, is equipped with main flow cavity in main flow pipe, is fixedly connected with spring fixed base in main flow cavity, is fixedly connected with piston return spring on spring fixed base, piston return spring other end fixedly connected with sealed piston piece, and the flow valve is installed in main flow cavity terminal, the pressure indicating pipe is used in cooperation with the pressure difference control valve, and the operator can monitor the pressure in the pressure indicating pipe monitoring device, and through the electric telescopic link cooperation piston return spring control sealed piston piece and timely blowdown adjust internal pressure, and the filtering effect is better, and the device operation is more stable.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas filtration devices, and in particular to a natural gas extraction drainage and sand removal device. Background Technology

[0002] During natural gas extraction, the well product is a mixture of gas, liquid, and sand. If it is not effectively separated, the sand particles will erode downstream equipment such as compressors and valves, and the liquid will easily cause "gas-liquid carryover" failure, which will seriously affect the quality of natural gas and production safety. Therefore, drainage and sand removal equipment is one of the core supporting equipment for natural gas extraction.

[0003] According to existing patent number CN202222211767.1, a drainage and sand removal device for natural gas extraction is disclosed, including a device body. The device body includes a treatment chamber. A top cover is threaded onto the top of the treatment chamber, and an exhaust port is opened on the top of the top cover. An air inlet is opened on the outer side of the treatment chamber. A support leg is fixedly installed on the bottom of the outer side of the treatment chamber, and a sewage outlet is opened at the bottom of the treatment chamber. Two limiting blocks are fixedly installed on the inner side wall of the treatment chamber and above the air inlet. A treatment structure is installed on the top of the limiting blocks to effectively ensure the treatment effect. By setting the treatment structure, the drainage and sand removal device for natural gas extraction can better treat sand and water during use, thereby effectively ensuring the use effect of the device.

[0004] The above devices have the following drawbacks: stains can only be treated after filtration is completed, and the drain outlet is easily blocked by residual water and sand during the filtration process, resulting in poor filtration effect. Utility Model Content

[0005] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a natural gas extraction drainage and sand removal device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A natural gas extraction drainage and sand removal device includes a main tank. A filtration and separation chamber is located inside the main tank. A bottom flow port is located at the bottom of the filtration and separation chamber. A main flow pipe is installed inside the bottom flow port. A main flow cavity is located inside the main flow pipe. A spring fixing seat is fixedly connected to the main flow cavity. A piston return spring is fixedly connected to the spring fixing seat. A sealing piston plate is fixedly connected to the other end of the piston return spring. A flow valve is installed at the end of the main flow cavity. A reset rope is fixedly connected to the sealing piston plate. A communication port is located on the main flow pipe. An electric telescopic rod is installed on the main tank. The telescopic end of the electric telescopic rod is fixedly connected to the portion of the reset rope that passes through the flow pipe. An auxiliary flow pipe is installed on the inner wall of the main tank. A differential pressure control valve is installed at the connection point between the auxiliary flow pipe and the filtration and separation chamber. A pressure indicator pipe is fixedly connected to the auxiliary flow pipe. A pressure scale mark is fixedly connected to the pressure indicator pipe. The end of the auxiliary flow pipe is connected to the main flow pipe.

[0007] To facilitate the flow of components, preferably, an air intake control valve is installed on the main tank, an air intake pipe is installed inside the air intake control valve, and the air intake control valve is connected to the filter separation chamber through the air intake pipe. An exhaust valve is installed on the top of the main tank, and the exhaust valve is connected to the filter separation chamber.

[0008] To ensure more thorough waste removal, preferably, a wastewater outlet is provided at the bottom of the filtration and separation chamber, and a wastewater pipe is installed on the wastewater outlet.

[0009] For more thorough filtration, preferably, a filter media mounting frame is installed inside the filtration separation chamber, a filter sponge is installed inside the filter media mounting frame, a waterproof filter layer is fixedly connected inside the filtration separation chamber, and a filter sheet is installed at the bottom of the filtration separation chamber.

[0010] Compared with the prior art, this utility model provides a natural gas extraction drainage and sand removal device with the following advantages: the differential pressure control valve and the pressure indicator pipe are used together, and the operator can monitor the pressure inside the device through the indicator pipe. The piston return spring and the sealing piston plate are used together to drain sewage in time and adjust the internal pressure, making the device more stable in operation. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the structure proposed in this utility model; Figure 2 is a cross-sectional view 1 of the present invention; Figure 3 is a cross-sectional view 2 of the present invention; Figure 4 is a cross-sectional view 3 of the present invention; Figure 5 is an enlarged view of part A of the cross-sectional view proposed in this utility model; Figure 6 is an enlarged view of part B of the cross-sectional view proposed in this utility model; Figure 7 is an enlarged view of part C of the cross-sectional view proposed in this utility model.

[0012] In the diagram: 1. Main tank; 101. Filtration and separation chamber; 102. Bottom flow interface; 103. Drain outlet; 104. Drain pipe; 3. Main flow pipe; 301. Main flow cavity; 302. Spring fixing seat; 303. Piston return spring; 304. Sealing piston plate; 305. Flow valve; 306. Return rope; 307. Connecting port; 308. Electric telescopic rod; 4. Auxiliary flow pipe; 401. Differential pressure control valve; 402. Pressure indicator pipe; 403. Pressure scale marking; 2. Inlet control valve; 201. Inlet pipe; 105. Exhaust valve; 5. Filter media mounting frame; 501. Filter sponge; 502. Waterproof filter layer; 503. Filter disc. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example 1: Referring to Figures 1-7, a natural gas extraction drainage and sand removal device includes a main tank 1. The main tank 1 has an internal filtration and separation chamber 101 for containing and processing a gas-liquid-sand mixture. The bottom of the tank is conical to facilitate the accumulation of sand and liquid at the bottom. A bottom flow interface 102 is provided at the bottom of the filtration and separation chamber 101. A main flow pipe 3 is installed inside the bottom flow interface 102. A main flow cavity 301 is provided inside the main flow pipe 3. A spring fixing seat 302 is fixedly connected inside the main flow cavity 301. A piston return spring 303 is fixedly connected to the spring fixing seat 302. A sealing piston plate 304 is fixedly connected to the other end of the piston return spring 303. A flow valve 305 is installed at the end of the main flow cavity 301. A reset rope 306 is fixedly connected to the sealing piston plate 304. A connecting port 307 is provided on the main flow pipe 3. An electric telescopic rod 308 is installed on the main tank 1. The telescopic end of the electric telescopic rod 308 and the reset rope 306 pass through the main flow pipe 3. The main body tank 1 is partially fixedly connected; an auxiliary flow pipe 4 is installed on the inner wall of the main body tank 1. A differential pressure control valve 401 is installed at the connection between the auxiliary flow pipe 4 and the filter separation chamber 101. A pressure indicator pipe 402 is fixedly connected to the auxiliary flow pipe 4. A pressure scale mark 403 is fixedly connected to the pressure indicator pipe 402. The end of the auxiliary flow pipe 4 is connected to the main flow pipe 3. An air intake control valve 2 is installed on the main body tank 1. An air intake pipe 201 is installed inside the air intake control valve 2. The air intake control valve 2 is connected to the filter separation chamber 101 through the air intake pipe 201. An exhaust valve 105 is installed on the top of the main body tank 1. The exhaust valve 105 is connected to the filter separation chamber 101. A drain port 103 is opened at the bottom of the filter separation chamber 101. A drain pipe 104 is installed on the drain port 103 for discharging the separated pure natural gas. A filter media mounting frame 5 is installed inside the filter separation chamber 101. A filter sponge 501 is installed inside, a filter sheet 502 is fixedly connected inside the filter separation chamber 101, and a waterproof filter layer 503 is installed at the bottom of the filter separation chamber 101. When the gas-liquid-sand mixture produced from natural gas extraction needs to be processed, the inlet control valve 2 is opened, and the gas-liquid-sand mixture enters the filtration and separation chamber 101 through the inlet pipe 201. The mixture first contacts the filter plate 503, and large-diameter sand particles are roughly filtered and intercepted. The filtered medium continues to flow and is finely filtered through the filter sponge 501. Fine sand particles and liquid droplets are separated and adsorbed on the filter sponge 501. At this time, most of the natural gas has been separated from the liquid and sand. Then it passes through the waterproof filter layer 502 for waterproof filtration. The filtered and purified natural gas gathers upward in the filtration and separation chamber 101. The exhaust valve 105 is opened, and the purified natural gas is discharged from the top and enters the subsequent transportation or utilization system. During filtration, the separated liquid and sand particles accumulate at the bottom of the filtration separation chamber 101. At this time, the piston return spring 303 is stretched by the electric telescopic rod 308 and the return rope 306, causing the sealing piston plate 304 to be positioned inside the main flow pipe 3. When the pressure difference between the inside and outside of the chamber reaches the set value of the differential pressure control valve 401, the differential pressure control valve 401 opens, and the pressure is transmitted to the pressure indicator pipe 402 through the auxiliary flow pipe 4. The operator can visually read the pressure through the pressure scale mark 403 and monitor the operating status of the device in real time. When sewage needs to be discharged, the operator controls the return rope 306 through the electric telescopic rod 308, causing the piston return spring 303 to push the sealing piston plate 304 back into the filtration separation chamber 101. At this time, the flow valve 305 is opened, and the liquid and sand particles accumulated at the bottom of the filtration separation chamber 101 are discharged through the main flow pipe 3. After some liquid and sand are discharged, the pressure inside the chamber decreases, and the operator controls the electric telescopic rod 308 again to control the return rope 306, causing the piston return spring 303 to return to its original position inside the filtration separation chamber 101. The sealing piston plate 304 is moved into the main flow pipe 3, and the main flow cavity 301 is resealed to realize the pressure adaptive control of liquid and sand discharge, and prevent the drain port 103 and drain pipe 104 from being blocked. After the end, the drain pipe 104 is opened to discharge the impurities remaining in the filter separation chamber 101. The differential pressure control valve 401 works in conjunction with the pressure indicator tube 402. Operators can monitor the internal pressure of the device through the pressure indicator tube 402. The electric telescopic rod 308 and the reset rope 306 work in conjunction with the piston reset spring 303 to control the sealing piston plate 304 to discharge sewage in time and adjust the internal pressure, resulting in better filtration and more stable device operation.

[0015] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A natural gas extraction drainage and sand removal device, comprising a main tank (1), characterized in that, The main tank (1) has a filter separation chamber (101) inside. The filter separation chamber (101) has a bottom flow port (102) at the bottom. The bottom flow port (102) has a main flow pipe (3) installed inside. The main flow pipe (3) has a main flow cavity (301) inside. The main flow cavity (301) has a spring fixing seat (302) fixedly connected inside. The spring fixing seat (302) has a piston return spring (303) fixedly connected to the spring fixing seat (302). The other end of the piston return spring (303) has a sealing piston plate (304) fixedly connected to it. The end of the main flow cavity (301) has a flow valve (305) installed. The sealing piston plate (304) has a reset rope (306) fixedly connected to it. The main flow pipe (3) has a connecting port (307). The main tank (1) has an electric telescopic rod (308) installed on it. The telescopic end of the electric telescopic rod (308) is fixedly connected to the part of the reset rope (306) that passes through the main flow pipe (3).

2. The natural gas extraction drainage and sand removal device according to claim 1, characterized in that, An auxiliary flow pipe (4) is installed on the inner wall of the main tank (1). A differential pressure control valve (401) is installed at the connection between the auxiliary flow pipe (4) and the filter separation chamber (101). A pressure indicator pipe (402) is fixedly connected to the auxiliary flow pipe (4). A pressure scale mark (403) is fixedly connected to the pressure indicator pipe (402).

3. A natural gas extraction drainage and sand removal device according to claim 2, characterized in that, The auxiliary flow tube (4) is connected to the main flow tube (3) at its end.

4. A natural gas extraction drainage and sand removal device according to claim 2, characterized in that, An air intake control valve (2) is installed on the main tank (1), and an air intake pipe (201) is installed inside the air intake control valve (2). The air intake control valve (2) is connected to the filter separation chamber (101) through the air intake pipe (201).

5. A natural gas extraction drainage and sand removal device according to claim 1, characterized in that, An exhaust valve (105) is installed on the top of the main tank (1), and the exhaust valve (105) is connected to the filter separation chamber (101).

6. A natural gas extraction drainage and sand removal device according to claim 1, characterized in that, The bottom of the filter separation chamber (101) is provided with a drain port (103), and a drain pipe (104) is installed on the drain port (103).

7. A natural gas extraction drainage and sand removal device according to claim 5, characterized in that, A filter media mounting frame (5) is installed inside the filter separation chamber (101), a filter sponge (501) is installed inside the filter media mounting frame (5), a waterproof filter layer (502) is fixedly connected inside the filter separation chamber (101), and a filter sheet (503) is installed at the bottom of the filter separation chamber (101).

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