Anti-blocking negative pressure drainage gas recovery device

Abstract

The utility model relates to the technical field of water drainage and gas production devices, and discloses an anti-blocking negative pressure water drainage and gas production device which comprises a base, a water-gas separator is fixedly connected to the top of the base, a draw-off pump is fixedly connected to the top of the water-gas separator, a suction pipe is fixedly connected to the input end of the draw-off pump, and the suction pipe is fixedly connected to the bottom of the base. The output end of the draw-off pump is connected with the water-gas separator, a filter assembly is arranged in the water-gas separator and comprises a filter screen, the outer wall of the filter screen is fixedly connected to the interior of the water-gas separator, and a first circulating pipe is fixedly connected to the interior of the water-gas separator. According to the utility model, water vapor is pumped into the water vapor separator through the suction pipe, primary impurity filtration is carried out by using a filter screen in the separator, then the water vapor is fed into the separation frame through the circulating pipe I and is filtered again by a filter drum in the separation frame, meanwhile, the air pump pumps air through the conveying pipe, and water falls into the bottom of the separation frame due to gravity and flows back through the circulating pipe II; the effect of preventing blockage during water-gas separation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drainage gas recovery device technical field especially relates to a kind of anti-clogging negative pressure drainage gas recovery device. BACKGROUND

[0002] In the field of natural gas exploitation, with the development of gas field, many gas wells will face the problem of well bottom liquid loading. Water accumulation not only occupies the space of gas well, hinders the smooth production of natural gas, but also causes corrosion to gas well equipment, reduces gas well productivity and service life. Therefore, efficient drainage gas recovery technology is the key link to ensure stable production of gas field and improve recovery efficiency, especially in some low-pressure and low-permeability gas fields. The use of negative pressure drainage gas recovery method can effectively reduce the bottom hole pressure and promote the flow of natural gas from the formation into the wellbore. However, during the drainage gas recovery process, various impurities such as solid particles and condensate droplets are often carried in natural gas, which can easily cause internal blockage of the gas recovery device, seriously affecting the normal operation of the device and the efficiency of drainage gas recovery. Therefore, it is of great significance to develop a negative pressure drainage gas recovery device that can effectively prevent blockage to improve the efficiency of gas field exploitation and ensure stable energy supply.

[0003] The existing drainage gas recovery device mainly uses the principle of gravity settling to separate gas and water. A large-volume separator is installed to allow the gas-water mixture to flow slowly inside the separator. Due to the difference in density between gas and water, water gradually settles to the bottom of the separator under the action of gravity, and gas is discharged from the top.

[0004] However, the existing drainage gas recovery device has the problem of easy blockage during gas-water separation. The traditional gravity settling and centrifugal separation methods cannot effectively intercept the impurities carried in natural gas during gas-water separation. These impurities flow with the gas-water mixture and easily accumulate in the internal pipes, valves and subsequent filter components of the device, causing blockage. Although conventional filter screens and filter cartridges can provide some filtering effect, their filtering precision is limited. Once the impurities accumulate too much, the filter screen or filter cartridge will be blocked, affecting the normal flow and separation effect of gas and water. Therefore, an anti-clogging negative pressure drainage gas recovery device is proposed to solve the above problems. SUMMARY

[0005] To overcome the above shortcomings, the utility model provides an anti-clogging negative pressure drainage gas recovery device to improve the problem that the existing technology cannot effectively intercept the impurities carried in natural gas during gas-water separation. These impurities flow with the gas-water mixture and easily accumulate in the device, causing blockage.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an anti -blocking negative pressure drainage gas recovery device, including base, the top fixedly connected with water gas separator of base, the top fixedly connected with extraction pump of water gas separator, the input fixedly connected with suction tube of extraction pump, the output of extraction pump is connected with water gas separator, the inside of water gas separator is provided with filter assembly,

[0008] The filter assembly includes a filter screen, the filter screen is fixedly connected to the inside of the water-gas separator, a circulation pipe one is fixedly connected to the inside of the water-gas separator, a circulation pipe two is fixedly connected to the inside of the water-gas separator, a connecting pipe is fixedly connected to one end of the circulation pipe one and the circulation pipe two, a separation frame is fixedly connected to the outer wall of the connecting pipe, a filter cartridge is fixedly connected to the inside of the separation frame, a suction pipe is fixedly connected to the inside of the separation frame, the filter cartridge and the suction pipe are communicated, and a cleaning assembly is arranged in the separation frame.

[0009] As a further description of the above technical solution:

[0010] The cleaning assembly includes a fixed seat and a motor, the fixed seat is fixedly connected to the inside of the separation frame, one end of the motor is fixedly connected to one end of the fixed seat, and a transmission column is fixedly connected to the output end of the motor.

[0011] As a further description of the above technical solution:

[0012] The transmission column is fixedly connected with a rotating plate on the outer wall, a hard brush is fixedly connected to one side of the rotating plate, and the hard brush is in contact with the filter cartridge.

[0013] As a further description of the above technical solution:

[0014] The motor is fixedly connected with a support frame on the outer wall, and one side of the support frame is fixedly connected to one side of the separation frame.

[0015] As a further description of the above technical solution:

[0016] A rotating column is rotatably connected in the connecting pipe, and a knob is fixedly connected to one end of the rotating column.

[0017] As a further description of the above technical solution:

[0018] The rotating column is fixedly connected with a valve leaf on the outer wall, and the outer wall of the valve leaf is in contact with the inner wall of the connecting pipe.

[0019] As a further description of the above technical solution:

[0020] The bottom of the water-gas separator is fixedly connected with a drain pipe, and the top of the base is fixedly connected with a gas tank.

[0021] As a further description of the above technical solution:

[0022] The gas pump is fixedly connected with the gas tank top, the input end of the gas pump is fixedly connected with a conveying pipe, and one end of the conveying pipe is fixedly connected inside the air extraction pipe.

[0023] The utility model has the advantages of the following:

[0024] 1、the utility model discloses a water vapor is extracted into the water vapor separator through the straw, and the filter screen inside the separator is used to filter the impurities preliminarily, and then the water vapor is sent into the separation frame through circulation pipe one, and is filtered again by the filter cartridge in the separation frame, and the air pump extracts the air through the conveying pipe, and the water falls into the bottom of the separation frame due to gravity and returns through circulation pipe two, which prevents the separation of water and air from being blocked, solves the problem that the impurities carried in the natural gas cannot be effectively intercepted when separating the air and water, the impurities flow along with the air and water, and are easily accumulated in the device, causing blockage, and the practicability of the water drainage and gas recovery device is improved.

[0025] 2、the utility model discloses that the motor output end drives the transmission column to rotate, and the transmission column drives the rotating plate connected to the outer wall to rotate inside the filter cartridge, and the rotating plate drives the hard brush on one side to scrape inside the filter cartridge, which effectively cleans the filter cartridge, solves the problem that the filter cartridge is difficult to clean in the traditional way, and needs to be manually cleaned after disassembly, the cleaning effect is poor, the filter cartridge is inconvenient to maintain, and the overall operation of the device is affected, and the flexibility of the water drainage and gas recovery device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic view of the anti-blocking negative pressure water drainage and gas recovery device provided by the utility model;

[0027] Figure 2 It is a filter screen structure schematic view of the anti-blocking negative pressure water drainage and gas recovery device provided by the utility model;

[0028] Figure 3 It is a separation frame structure schematic view of the anti-blocking negative pressure water drainage and gas recovery device provided by the utility model;

[0029] Figure 4 It is a filter cartridge structure schematic view of the anti-blocking negative pressure water drainage and gas recovery device provided by the utility model;

[0030] Figure 5 It is a rotating plate structure schematic view of the anti-blocking negative pressure water drainage and gas recovery device provided by the utility model.

[0031] LEGEND:

[0032] 1, base; 2, water gas separator; 3, extraction pump; 4, suction tube; 5, filter screen; 6, circulating pipe one; 7, circulating pipe two; 8, knob; 9, connecting pipe; 10, separation frame; 11, filter cartridge; 12, air suction pipe; 13, rotating column; 14, valve leaf; 15, support frame; 16, fixed seat; 17, motor; 18, transmission column; 19, rotating plate; 20, hard brush; 21, conveying pipe; 22, gas tank; 23, air pump; 24, drain pipe. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0034] Referring to Figures 1-4 An embodiment provided by the utility model: a kind of anti-clogging negative pressure drainage gas recovery device, including base 1, base 1 is the support structure of entire device, base 1 top is fixedly connected with water gas separator 2, purpose is effectively separated gas and moisture, ensure the purity of gas, water gas separator 2 top is fixedly connected with extraction pump 3, extraction pump 3 input end is fixedly connected with suction tube 4, extraction pump 3 output end is connected with water gas separator 2, water gas separator 2 inside is provided with filter assembly;

[0035] The filtering assembly comprises a filter screen 5 fixedly connected to the inside of the water-air separator 2, which removes large particles such as dust, sand, and soil from the water-air mixture. The water-air separator 2 is fixedly connected with a circulation pipe 6 and a circulation pipe 7. The circulation pipe 6 and the circulation pipe 7 are each fixedly connected with a connecting pipe 9. The upper connecting pipe 9 is used to input the water-air mixture into a separation frame 10, and the lower connecting pipe 9 is used to output the filtered water-air mixture back to the water-air separator 2. The connecting pipe 9 is fixedly connected with the separation frame 10, which is fixedly connected with a filter cartridge 11. The filter cartridge 11 is made of stainless steel or other materials with strong adsorption properties, which can adsorb small particles such as water mist and fine impurities. The separation frame 10 is fixedly connected with an air extraction pipe 12, which is connected with the filter cartridge 11. The separation frame 10 is provided with a cleaning assembly. The connecting pipe 9 is rotatably connected with a rotating column 13, one end of which is fixedly connected with a knob 8. The rotating column 13 is fixedly connected with a valve leaf 14, which is in contact with the inner wall of the connecting pipe 9. The water-air separator 2 is fixedly connected with a drain pipe 24 at the bottom. The base 1 is fixedly connected with an air tank 22 at the top. The air tank 22 is fixedly connected with an air pump 23 at the top. The air pump 23 is fixedly connected with a conveying pipe 21 at the input end. One end of the conveying pipe 21 is fixedly connected to the inside of the air extraction pipe 12. The air pump 23 is started through the input end, which drives the conveying pipe 21 to extract the purified gas from the separation frame 10, so that the water in the water-air mixture is effectively separated.

[0036] Specifically, in the use of the drainage gas recovery device, first, the suction pump 3 is started through its input end, and the water vapor in the suction pipe 4 is introduced into the water vapor separator 2. The suction pipe 4 is made of corrosion-resistant material and is provided with a sealing device to prevent water vapor leakage, ensuring stable airflow during suction. When the water vapor enters the water vapor separator 2, it first passes through the internal filter screen 5 for preliminary filtration. The filter screen 5 can effectively remove larger particulate matter such as dust and sand from the water vapor, reducing the burden on subsequent equipment and improving separation efficiency. At this time, the water vapor is preliminarily purified and enters the next separation process. Then, the water vapor enters one of the connecting pipes 9 connected to the water vapor separator 2 through the circulation pipe one 6. This connecting pipe 9 is connected above the separation frame 10. The water vapor flows into the separation frame 10 through this pipe. Inside the separation frame 10, the airflow is filtered again by the filter cartridge 11. The filter cartridge 11 is made of stainless steel mesh material and has strong adsorption performance, which can effectively capture small impurities in the water vapor, further promoting the separation of impurities and gas in the water vapor. In this process, the air pump 23 is started through its input end, and the delivery pipe 21 draws the purified gas from the separation frame 10. The water in the separation frame 10 naturally sinks due to gravity and accumulates at the bottom of the separation frame 10. At this time, the water flows from the other connecting pipe 9 below the separation frame 10 into the circulation pipe two 7 and returns to the water vapor separator 2 again through this pipe. In this circulation process, the separation of water vapor is more efficient, avoiding the accumulation and blockage of impurities, thereby prolonging the service life of the equipment.

[0037] With reference to Figures 3-5 The cleaning assembly includes a fixed seat 16 and a motor 17. The outer wall of the fixed seat 16 is fixedly connected inside the separation frame 10 to provide firm support for the motor 17. One end of the motor 17 is fixedly connected to one end of the fixed seat 16. The output end of the motor 17 is fixedly connected with a transmission column 18. The outer wall of the transmission column 18 is fixedly connected with a rotating plate 19. One side of the rotating plate 19 is fixedly connected with a hard brush 20. The hard brush 20 is in contact with the filter cartridge 11. The hard brush 20 is driven by the motor 17 to contact the filter cartridge 11, which can effectively remove impurities and blockages on the filter cartridge 11 and maintain the permeability of the filter cartridge 11. The outer wall of the motor 17 is fixedly connected with a support frame 15. One side of the support frame 15 is fixedly connected to one side of the separation frame 10, further enhancing the stability of the motor 17 and the reliability of the cleaning assembly.

[0038] Specifically, when the filter cartridge 11 inside the separation frame 10 needs to be cleaned, the device drives the transmission column 18 to rotate through the output end of the motor 17, the transmission column 18 is connected with the rotating plate 19, the shape of the rotating plate 19 is carefully designed and can produce uniform scraping effect inside the filter cartridge 11, the rotating plate 19 drives the hard brush 20 on one side through rotation, so that the hard brush 20 scrapes along the inner wall of the filter cartridge 11, which can effectively remove the water droplets and impurities remaining on the surface of the filter cartridge 11, avoid the filter cartridge 11 from being blocked, and restore the high filtering capacity of the filter cartridge 11 after cleaning, so as to ensure the continuous and efficient operation of the water-gas separator 2.

[0039] Working principle: when the drainage gas recovery device is used, first, the suction pipe 4 is driven by the input end of the suction pump 3 to suck water and gas into the water-gas separator 2, and at the same time, the impurities in the water and gas are preliminarily filtered through the filter screen 5 inside the water-gas separator 2, then the water and gas inside the water-gas separator 2 are sent into the connecting pipe 9 above the separation frame 10 through the circulation pipe one 6, so that the water and gas enter the separation frame 10 from above, at this time, the conveying pipe 21 is driven by the input end of the air pump 23 to suck the gas inside the separation frame 10, the gas is filtered again when being sucked out of the filter cartridge 11, and at the same time, the water inside the separation frame 10 falls to the bottom of the separation frame 10 due to gravity, at this time, the connecting pipe 9 below the separation frame 10 is opened, so that the filtered water flows into the circulation pipe two 7 from the connecting pipe 9 below the separation frame 10, and then flows back to the water-gas separator 2 through the circulation pipe two 7 to complete separation, so as to achieve the effect of preventing blockage during water and gas separation, when the filter cartridge 11 inside the separation frame 10 needs to be cleaned, first, the transmission column 18 is driven to rotate through the output end of the motor 17, the rotating plate 19 connected with the outer wall is driven to rotate inside the filter cartridge 11, the hard brush 20 on one side is driven to scrape along the inside of the filter cartridge 11 by the rotating plate 19, and then the water and impurities remaining on the filter cartridge 11 are scraped off, so as to achieve the effect of effectively cleaning the filter cartridge 11.

[0040] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-clogging negative pressure drainage gas recovery device comprising a base (1), characterized in that: The base (1) top fixedly connected with water vapor separator (2), the water vapor separator (2) top fixedly connected with extraction pump (3), the extraction pump (3) input fixedly connected with suction tube (4), the extraction pump (3) output and the water vapor separator (2) are connected, the water vapor separator (2) inside is provided with filter assembly; The filter assembly includes a filter screen (5), the filter screen (5) is fixedly connected to the inside of the water vapor separator (2), the water vapor separator (2) is fixedly connected with circulation pipe one (6), the water vapor separator (2) is fixedly connected with circulation pipe two (7), one end of the circulation pipe one (6) and the circulation pipe two (7) is fixedly connected with the connecting pipe (9), the connecting pipe (9) outer wall is fixedly connected with separation frame (10), the separation frame (10) is fixedly connected with filter cartridge (11) inside, the separation frame (10) is fixedly connected with suction pipe (12) inside, the filter cartridge (11) and the suction pipe (12) are communicated, the separation frame (10) is provided with cleaning assembly inside.

2. The anti-clogging negative pressure drainage gas recovery device according to claim 1, characterized in that: The cleaning assembly includes a fixed seat (16) and a motor (17), the fixed seat (16) outer wall is fixedly connected to the inside of the separation frame (10), one end of the motor (17) is fixedly connected to one end of the fixed seat (16), the motor (17) output is fixedly connected with transmission column (18).

3. The anti-clogging negative pressure drainage gas recovery device according to claim 2, characterized in that: The transmission column (18) outer wall is fixedly connected with the rotating plate (19), one side of the rotating plate (19) is fixedly connected with the hard brush (20), the hard brush (20) is in contact with the filter cartridge (11).

4. The anti-clogging negative pressure drainage gas recovery device according to claim 3, characterized in that: The motor (17) outer wall is fixedly connected with support frame (15), one side of the support frame (15) is fixedly connected to one side of the separation frame (10).

5. The anti-clogging negative pressure drainage gas recovery device according to claim 1, characterized in that: The connecting pipe (9) is rotatably connected with rotating column (13) inside, one end of the rotating column (13) is fixedly connected with knob (8).

6. The anti-clogging negative pressure drainage gas recovery device according to claim 5, characterized in that: The rotating column (13) outer wall is fixedly connected with valve leaf (14), the valve leaf (14) outer wall is in contact with the connecting pipe (9) inner wall.

7. The anti-clogging negative pressure drainage gas recovery device according to claim 1, characterized in that: The water vapor separator (2) bottom fixedly connected with drain pipe (24), the base (1) top fixedly connected with gas tank (22).

8. The anti-clogging negative pressure drainage gas recovery device according to claim 7, characterized in that: The gas tank (22) top fixedly connected with air pump (23), the air pump (23) input fixedly connected with conveying pipe (21), one end of the conveying pipe (21) is fixedly connected inside the suction pipe (12).

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