A shale gas deliquification device

Abstract

The present invention discloses a shale gas deliquoring device, which belongs to the technical field of shale gas extraction devices. It includes a conical cylinder, a vortex tube and an air compression device. A tangentially arranged air inlet pipe is provided on the upper end side of the conical cylinder, an exhaust pipe is provided in the middle of the upper end of the conical cylinder, and both the air inlet pipe and the exhaust pipe are connected to the gas pipeline. A liquid discharge pipe is provided at the lower end of the conical cylinder, and a water collecting tank is provided on the outer side of the liquid discharge pipe. The output end of the air compression device is connected to the air inlet of the vortex tube, and a spiral tube is provided on the cooling end of the vortex tube. The spiral tube is sleeved and wound on the gas pipeline at the front end of the air inlet pipe. This technical solution is used to remove moisture from shale gas and improve the dehydration effect of shale gas.

Description

Technical Field

[0001] The invention belongs to the technical field of shale gas production equipment, and in particular relates to a shale gas deliquification device. Background Art

[0002] During the development of gas fields, in order to increase the production of single wells, large-scale hydraulic fracturing is often used to form a complex artificial fracture network in shale reservoirs. A single well needs to pump tens of thousands of cubic meters of water into the gas reservoir. During the test production, these large amounts of injected liquid will be discharged back to the ground with the produced natural gas, making the natural gas saturated with high water content. Part of the formation water becomes a mixture of water vapor and natural gas. The water-rich natural gas enters the long-distance pipeline network of the gas field after the test production process during the test production operation. Since most of the long-distance pipeline network is buried in the soil below the surface, the working environment temperature is the temperature of the soil below the ground, which is low. The high-temperature shale gas rich in water vapor has a lower temperature in the gas pipeline network, and a large amount of free water is precipitated. The precipitated formation water has brought great harm to the production of the gas field gas pipeline network: the accumulation of liquid in the pipeline network will increase the resistance of the pipeline gas transmission and reduce the efficiency of the pipeline natural gas transmission; the presence of water in the gas pipeline provides a verified environment for the growth of some corrosive bacteria, such as sulfate-reducing bacteria, accelerates the bacterial corrosion of the pipeline, causes the corrosion of the pipeline network, and leaks natural gas, which in turn causes great safety hazards. Therefore, after natural gas is extracted, it is necessary to remove water first to prevent the water vapor carried in the natural gas from corroding the gas field gas transmission pipeline network.

[0003] As shown in a shale gas dehydration device with patent number CN201822277341.X, a separation device is included. In the patent document, a cyclone separator is selected, and shale gas or other fluids enter the spiral channels inside several cyclones of the cyclone separator, and are forced to rotate at a high speed, and the separated droplets fall along the inner wall of the cyclone shell.

[0004] Although the cyclone separator in the above device can separate water droplets from shale gas, in actual use, the temperature of some formations is high, and the temperature of the shale gas produced is also relatively high. Water exists in shale gas in the form of water vapor. Due to the small mass of water vapor, it is difficult to separate it from the shale gas when passing through the cyclone separator, so the dehydration separation effect of shale gas is not good. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a shale gas dehydration device to solve the problem that the dehydration mechanism in the prior art is difficult to remove the water vapor mixed in the shale gas, resulting in poor shale gas dehydration effect.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention discloses a shale gas deliquidation device, which is connected in series to a shale gas pipeline, and comprises a conical cylinder, a vortex tube and an air compression device. A tangentially arranged air inlet pipe is provided on the side surface of the upper end of the conical cylinder, an exhaust pipe is provided in the middle of the upper end of the conical cylinder, and both the air inlet pipe and the exhaust pipe are connected to the gas pipeline. A drain pipe is provided at the lower end of the conical cylinder, and a water collecting tank is provided on the outer side of the drain pipe. The output end of the air compression device is connected to the air inlet of the vortex tube, and a spiral tube is provided on the cooling end of the vortex tube. The spiral tube is sleeved and wound around the gas pipeline at the front end of the air inlet pipe.

[0008] The working principle of this technical solution is:

[0009] Compressed air is input into the vortex tube through an air compression device. At this time, cold air will be generated at the cooling end of the vortex tube. During the movement of the cold air in the spiral tube, the gas pipeline will be cooled, that is, the shale gas in the gas pipeline will exchange heat with the gas pipeline to reduce the temperature of the shale gas. That is, after the temperature is reduced, the water vapor in the shale gas will liquefy into small water droplets, and the shale gas will carry the small water droplets into the conical cylinder. Since the mass of the small water droplets is relatively large, when the mixture of shale gas and small water droplets makes a spiral motion along the inside of the conical cylinder, the small water droplets will be thrown to the side wall of the conical cylinder under the action of centrifugal force and collide. The small water droplets after the collision will lose kinetic energy, and thus slide along the inner wall of the conical cylinder into the water collecting tank. When the shale gas after separating the small water droplets moves to the lower end of the conical cylinder, a vortex from bottom to top will be generated, which will be discharged from the exhaust pipe.

[0010] Furthermore, a venturi tube is provided between the exhaust pipe and the gas transmission pipeline, and an exhaust pipe is provided on the recessed part of the venturi tube, one end of the exhaust pipe is connected to the venturi tube, and the other end of the exhaust pipe is connected to the upper end of the water collecting tank. The advantage of this is that when the high-speed shale gas flows in the venturi tube, the flow velocity of the shale gas in the recessed part of the venturi tube increases, that is, the air pressure there decreases, so a small amount of shale gas in the water collecting tank will be sucked. During suction, a negative pressure state will be formed in the water collecting tank, which will facilitate water droplets with smaller volume and mass to slide into the water collecting tank (due to the existence of the drainage pipe, part of the shale gas will enter the water collecting tank, increasing the pressure in the water collecting tank, which will cause resistance to the downward movement of small water droplets).

[0011] Furthermore, a conical outer shell is sleeved on the outer side of the conical cylinder, an exhaust hole is provided at the upper end of the conical outer shell, a heating chamber is provided between the inner side surface of the conical outer shell and the outer side surface of the conical cylinder, a heating tube is provided on the heating end of the vortex tube, one end of the heating tube is connected to the heating end of the vortex tube, and the other end of the heating tube is connected to the lower end of the heating chamber, and an electric control valve is provided on the heating tube.

[0012] Since the mined shale gas also contains fine sand and ash in the stratum, the sand and ash will also be thrown to the inner wall in the conical cylinder, that is, the sand and ash will come into contact with the droplets on the inner wall, causing the three to mix. The mixed product has a certain viscosity, which will adhere to the inner wall of the conical cylinder. Therefore, the hot air generated by the hot end of the vortex tube heats the outer wall of the conical cylinder, so that the outer wall is in a relatively high temperature state, that is, the mixture adhering to the inner wall and the moisture on the contact surface of the inner wall will be dried, thereby reducing the viscosity of the mixture. Therefore, under the impact of the spirally moving shale gas, it will fall off and slide into the water collecting tank (if not handled, long-term use will cause the thickness of the mixture on the inner wall to continue to thicken, affecting the sliding of the droplets, and will also block and affect the spiral movement of the shale gas).

[0013] Furthermore, a spiral air channel is provided inside the heating chamber, which is beneficial in that it guides the hot air so that the side wall of the conical cylinder is heated evenly.

[0014] Furthermore, a thermostatic tube is provided on the cooling end of the vortex tube, one end of the thermostatic tube is connected to the cooling end of the vortex tube, and the other end of the thermostatic tube is connected to the lower end of the heating chamber. An electric control valve is provided on the thermostatic tube. The advantage of this is that if the temperature of the hot end of the vortex tube is high, the temperature of the side wall of the conical cylinder will be high, which will cause the droplets on its inner wall to evaporate quickly, and then cause a large amount of water vapor to mix into the shale gas. Therefore, the thermostatic tube introduces cold air into the heating chamber to achieve a real-time temperature control effect.

[0015] Furthermore, the heating end of the vortex tube is provided with an electric control valve for adjusting the hot air exhaust flow rate, which is beneficial in that the temperature of the heating end and the cooling end of the vortex tube can be adjusted by adjusting the flow rate of the electric control valve on the heating end.

[0016] Furthermore, a rotating shaft is provided at the bottom of the water collecting tank, one end of the rotating shaft extends to the outside of the water collecting tank, and a number of stirring rods are evenly distributed on the circumference of the part of the rotating shaft located inside the water collecting tank. A driving mechanism is provided on the end of the rotating shaft located outside the water collecting tank. The advantage of this is that the rotating shaft drives the stirring rods to rotate, thereby avoiding the sedimentation of sand, gravel and ash in the water collecting tank, because the drainage holes of the water collecting tank will be blocked after sedimentation, and it will be difficult to drain them cleanly (the water collecting tank cannot be drained in real time, otherwise a small amount of shale gas will overflow through the drainage area).

[0017] Furthermore, the driving mechanism includes rotating blades and a blowing pipe, the rotating blades are evenly distributed on the rotating shaft, one end of the blowing pipe is connected to the exhaust end of the spiral tube, and the other end of the blowing pipe is provided with a plurality of blowing holes, and the exhaust direction of the blowing holes points to the rotating blades. The benefit is that the cold air after heat exchange is used to blow the blades, thereby driving the rotating shaft to rotate. This arrangement does not require an additional driving device, thereby saving energy.

[0018] Furthermore, the water collecting tank is provided with a drain port, and the drain port is provided with a cover plate rotatably connected to the water collecting tank, and the other end of the cover plate is provided with a pull rope, one end of the pull rope is fixedly connected to the movable end of the cover plate, and the other end of the pull rope is provided with a float. The advantage of this arrangement is that this arrangement cleverly utilizes buoyancy to pull the cover plate open for drainage, thereby realizing automatic and regular drainage.

[0019] Furthermore, a spring is provided on one end of the exhaust pipe located inside the conical cylinder, and a flexible filter is covered on the outer surface of the spring. The advantage is that the flexible filter can block light impurities in shale gas (such as plastic bag particles, thread ends, etc.). The spring will swing under the impact of shale gas, thereby shaking off the impurities adhered to the flexible filter.

[0020] The beneficial effects of the present invention are:

[0021] (1) In this technical solution, the characteristics of the vortex tube are cleverly used to cool the shale gas, so that the water vapor in the shale gas can be liquefied, thereby improving the effect of removing the water in the shale gas from the conical cylinder; (2) The hot air generated by the vortex tube is used to heat the side wall of the conical cylinder, so that the water on the adhesion surface of the mixture of sand, gravel, ash and water adhering to it is dried, thereby reducing the degree of adhesion and falling off, improving the cleaning effect of the inner wall of the conical cylinder, and further improving the flow of droplets and the spiral motion effect of shale gas; (3) The temperature regulating tube The setting can adjust the temperature in the heating chamber to avoid the problem of rapid vaporization of water droplets due to excessive temperature (drying is a slow loss of water, which has little effect on shale gas dehydration); (4) This device can be set up in multiple series connected to the gas pipeline to gradually dehydrate the shale gas and improve the dehydration effect (the device set up at the rear does not need to be equipped with a heating chamber and a stirring rod and other components. The shale gas in the rear device only contains a small amount of water, so only water needs to be removed); (5) The structure of this device is simple, the principle is ingenious, and the dehydration effect in shale gas is good.

[0022] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0024] Figure 1 It is a schematic diagram of a front view of a shale gas deliquification device of the present invention;

[0025] Figure 2 It is a three-dimensional schematic diagram of a conical cylinder in the shale gas deliquification device of the present invention;

[0026] Figure 3 It is a schematic diagram of a front view of a conical cylinder in a shale gas deliquification device of the present invention;

[0027] Figure 4 It is a schematic cross-sectional view of a conical cylinder in the shale gas deliquification device of the present invention;

[0028] Figure 5 It is a connection schematic diagram of the blowing pipe in the shale gas deliquification device of the present invention;

[0029] Figure 6 It is a schematic diagram of the drainage arrangement of the water collecting box in the shale gas deliquification device of the present invention.

[0030] The following are marked in the accompanying drawings:

[0031] Gas transmission pipeline 1, conical cylinder 2, conical shell 3, water collecting box 4, air compression device 5, vortex tube 6, three-way joint 7, spiral tube 8, temperature regulating tube 9, heating tube 10, venturi tube 11, exhaust pipe 12, air inlet pipe 13, exhaust pipe 14, drain pipe 15, heating chamber 16, blowing pipe 17, rotating shaft 18, stirring rod 19, blowing hole 20, rotating blade 21, cover plate 22, float 23, pull rope 24, spring 25, flexible filter 26. DETAILED DESCRIPTION

[0032] like Figures 1 to 6 As shown, a shale gas deliquoring device of the present invention is connected in series to a shale gas pipeline 1, comprising a conical cylinder 2, a vortex tube 6 and an air compression device 5. A tangentially arranged air inlet pipe 13 is provided on the side surface of the upper end of the conical cylinder 2, an exhaust pipe 14 is provided in the middle of the upper end of the conical cylinder 2, the air inlet pipe 13 and the exhaust pipe 14 are both connected to the gas pipeline 1, a drain pipe 15 is provided at the lower end of the conical cylinder 2, a water collecting tank 4 is provided on the outer side of the drain pipe 15, the output end of the air compression device 5 is connected to the air inlet of the vortex tube 6, a spiral tube 8 is provided on the cooling end of the vortex tube 6, and the spiral tube 8 is sleeved and wound on the gas pipeline 1 at the front end of the air inlet pipe 13, and the air compression device 5 is preferably an air compressor.

[0033] It should be noted in advance that vortex tube 6 refrigeration is a method of using the vortex tube 6 to generate a vortex in the high-speed airflow to separate the cold and hot airflows, and to obtain a refrigeration method using the cold airflow. The vortex tube 6 is also called the Rank-Hilsch vortex tube 6, which is a mechanical device in which a separated compressed gas enters the hot flow and the cold flow. The gas coming out of the "hot" end can reach a temperature of 200°C (392°F), and the gas coming out of the "cold end" can reach a temperature of -50°C (-58°F). Combined with the above characteristics, the vortex tube 6 can be used as a device for cooling shale gas.

[0034] The working principle of this technical solution is:

[0035] Compressed air is input into the vortex tube 6 through the air compression device 5. At this time, cold air will be generated at the cooling end of the vortex tube 6. During the movement of the cold air in the spiral tube 8, the gas pipeline 1 will be cooled. The temperature of the cold end can be determined and adjusted according to the actual situation, that is, the shale gas in the gas pipeline 1 will exchange heat with the gas pipeline 1 to reduce the temperature of the shale gas. That is, after the temperature is reduced, the water vapor in the shale gas will liquefy into small water droplets, and the shale gas will carry the small water droplets into the conical cylinder 2. Since the mass of the small water droplets is relatively large, when the mixture of shale gas and small water droplets makes a spiral motion along the inside of the conical cylinder 2, under the action of centrifugal force, the small water droplets will be thrown to the side wall of the conical cylinder 2 and collide. After the collision, the small water droplets will lose kinetic energy, and thus slide along the inner wall of the conical cylinder 2 into the water collecting box 4. When the shale gas after separating the small water droplets moves to the lower end of the conical cylinder 2, a vortex from bottom to top will be generated, thereby being discharged from the exhaust pipe 14.

[0036] A venturi tube 11 is provided between the exhaust pipe 14 and the gas transmission pipeline 1, and an exhaust pipe 12 is provided on the recessed part of the venturi tube 11. One end of the exhaust pipe 12 is connected to the venturi tube 11, and the other end of the exhaust pipe 12 is connected to the upper end of the water collecting tank 4. When the high-speed shale gas flows in the venturi tube 11, the flow velocity of the shale gas in the recessed part of the venturi tube 11 increases, that is, the air pressure there decreases, so a small amount of shale gas in the water collecting tank 4 will be sucked. During suction, a negative pressure state will be formed in the water collecting tank 4, which will facilitate water droplets with smaller volume and mass to slide into the water collecting tank 4 (due to the existence of the drainage pipe 15, part of the shale gas will enter the water collecting tank 4, increasing the pressure in the water collecting tank 4, which will cause resistance to the downward movement of small water droplets).

[0037] A conical outer shell 3 is sleeved on the outer side of the conical cylinder 2, an exhaust hole is provided at the upper end of the conical outer shell 3, a heating chamber 16 is provided between the inner side surface of the conical outer shell 3 and the outer side surface of the conical cylinder 2, a heating tube 10 is provided on the heating end of the vortex tube 6, one end of the heating tube 10 is connected to the heating end of the vortex tube 6, and the other end of the heating tube 10 is connected to the lower end of the heating chamber 16, and an electric control valve is provided on the heating tube 10.

[0038] Since the mined shale gas also contains fine sand and ash in the stratum, the sand and ash will also be thrown to the inner wall in the conical cylinder 2, that is, the sand and ash will come into contact with the droplets on the inner wall, causing the three to mix. The mixed product has a certain viscosity, which will adhere to the inner wall of the conical cylinder 2. Therefore, the hot air generated by the heating end of the vortex tube 6 heats the outer wall of the conical cylinder 2, so that the outer wall is in a relatively high temperature state, that is, the mixture adhering to the inner wall and the moisture on the contact surface of the inner wall will be dried, thereby reducing the viscosity of the mixture. Therefore, under the impact of the spirally moving shale gas, it will fall off and slide into the water collecting tank 4 (if not handled, long-term use will cause the thickness of the mixture on the inner wall to continue to thicken, affecting the sliding of the droplets, and will also block and affect the spiral movement of the shale gas).

[0039] A spiral air passage is provided inside the heating chamber 16 to guide the hot air so that the side wall of the conical cylinder 2 is heated evenly.

[0040] A thermostatic tube 9 is also provided on the cooling end of the vortex tube 6. One end of the thermostatic tube 9 is connected to the cooling end of the vortex tube 6, which can be connected via a three-way joint 7. The other end of the thermostatic tube 9 is connected to the lower end of the heating chamber 16. An electric control valve is provided on the thermostatic tube 9. If the temperature of the heating end of the vortex tube 6 is high, the temperature of the side wall of the conical cylinder 2 will be high, which will cause the droplets on its inner wall to evaporate quickly, and then cause a large amount of water vapor to mix into the shale gas. Therefore, the thermostatic tube 9 introduces cold air into the heating chamber 16 to achieve a real-time temperature control effect.

[0041] The heating end of the vortex tube 6 is provided with an electric control valve for adjusting the hot air exhaust flow rate. By adjusting the flow rate of the electric control valve on the heating end, the temperature of the heating end and the cooling end of the vortex tube 6 can be adjusted.

[0042] A rotating shaft 18 is provided at the bottom of the water collecting tank 4, one end of the rotating shaft 18 extends to the outside of the water collecting tank 4, and a number of stirring rods 19 are evenly distributed on the circumference of the part of the rotating shaft 18 located inside the water collecting tank 4. A driving mechanism is provided on the end of the rotating shaft 18 located outside the water collecting tank 4. The rotating shaft 18 drives the stirring rods 19 to rotate, thereby preventing sand, gravel and ash from settling in the water collecting tank 4, because the drainage holes of the water collecting tank 4 will be blocked after precipitation, and it will be difficult to drain them cleanly (the water collecting tank 4 cannot be drained in real time, otherwise a small amount of shale gas will overflow through the drainage area).

[0043] The driving mechanism includes rotating blades 21 and a blowing pipe 17. The rotating blades 21 are evenly distributed on the rotating shaft 18. One end of the blowing pipe 17 is connected to the exhaust end of the spiral tube 8. A plurality of blowing holes 20 are provided on the other end of the blowing pipe 17. The exhaust direction of the blowing holes 20 points to the rotating blades 21. The cold air after heat exchange is used to blow the blades, thereby driving the rotating shaft 18 to rotate. This arrangement does not require an additional driving device, saving energy.

[0044] A drain port is provided on the water collecting tank 4, and a cover plate 22 rotatably connected to the water collecting tank 4 is provided on the drain port. A pull rope 24 is provided on the other end of the cover plate 22. One end of the pull rope 24 is fixedly connected to the movable end of the cover plate 22, and a float 23 is provided on the other end of the pull rope 24. This arrangement cleverly utilizes buoyancy to pull open the cover plate 22 for drainage, and can achieve automatic and regular drainage. Of course, the rotating connection can use a rotating shaft 18, and a torsion spring can be provided on the rotating shaft 18 for limiting and resetting after drainage.

[0045] A spring 25 is provided on one end of the exhaust pipe 14 located inside the conical cylinder 2. The outer surface of the spring 25 is covered with a flexible filter screen 26. The flexible filter screen 26 can block light impurities in the shale gas (such as plastic bag particles, thread ends, etc.). The spring 25 will swing under the impact of shale gas, thereby shaking off the impurities adhered to the flexible filter screen 26.

[0046] The electric control valve in this technical solution is an existing technology, which is used to control the on-off of the pipeline, and will not be described in detail here. The device can be connected in series to the gas pipeline 1 in multiple pieces, preferably two pieces, one at the front end to remove most of the liquid in the shale gas and impurities (sand, gravel, ash, etc.) mixed in the shale gas, and one at the rear end to remove a small amount of residual moisture in the shale gas.

[0047] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A shale gas deliquification device, connected in series to a shale gas pipeline, characterized in that: The air compressor of claim 1, wherein the air intake pipe is tangentially arranged on the side surface of the upper end of the conical cylinder, an exhaust pipe is arranged in the middle of the upper end of the conical cylinder, the air intake pipe and the exhaust pipe are both connected to the air supply pipeline, the lower end of the conical cylinder is provided with a drain pipe, the outer side of the drain pipe is provided with a water collecting tank, the output end of the air compressor is connected with the air inlet of the vortex tube, the cooling end of the vortex tube is provided with a spiral tube, the spiral tube is sleeved and wound around the air supply pipeline at the front end of the inlet pipe; the outer side of the conical cylinder is sleeved with a conical shell, the upper end of the conical shell is provided with an exhaust hole, a heating chamber is arranged between the inner side surface of the conical shell and the outer side surface of the conical cylinder, a heating pipe is arranged on the heating end of the vortex tube, one end of the heating pipe is connected with the heating end of the vortex tube, the other end of the heating pipe is connected with the lower end of the heating chamber, and an electric control valve is arranged on the heating pipe.

2. A shale gas deliquification device according to claim 1, characterized in that: A venturi tube is provided between the exhaust pipe and the gas pipeline, an exhaust pipe is provided on the concave portion of the venturi tube, one end of the exhaust pipe is connected to the venturi tube, and the other end of the exhaust pipe is connected to the upper end of the water collecting tank.

3. A shale gas deliquification device according to claim 1, characterized in that: A spiral air passage is arranged inside the heating chamber.

4. A shale gas deliquification device according to claim 1, characterized in that: A thermostatic tube is also provided on the cooling end of the vortex tube, one end of the thermostatic tube is connected to the cooling end of the vortex tube, and the other end of the thermostatic tube is connected to the lower end of the heating chamber. An electric control valve is provided on the thermostatic tube.

5. The shale gas deliquification device according to claim 1, characterized in that: The heating end of the vortex tube is provided with an electric control valve for adjusting the exhaust flow rate of hot air.

6. A shale gas deliquification device according to claim 1, characterized in that: A rotating shaft is provided at the bottom of the water collecting tank, one end of the rotating shaft extends to the outside of the water collecting tank, a plurality of stirring rods are evenly distributed on the circumference of the rotating shaft located inside the water collecting tank, and a driving mechanism is provided on one end of the rotating shaft located outside the water collecting tank.

7. A shale gas deliquification device according to claim 6, characterized in that: The driving mechanism includes rotating blades and a blowing pipe, wherein the rotating blades are evenly arranged on the rotating shaft, one end of the blowing pipe is connected to the exhaust end of the spiral tube, and the other end of the blowing pipe is provided with a plurality of blowing holes, and the exhaust direction of the blowing holes points to the rotating blades.

8. The shale gas deliquification device according to claim 1, characterized in that: The water collecting tank is provided with a drain port, and the drain port is provided with a cover plate rotatably connected to the water collecting tank, the other end of the cover plate is provided with a pull rope, one end of the pull rope is fixedly connected to the movable end of the cover plate, and the other end of the pull rope is provided with a float.

9. The shale gas deliquification device according to claim 1, characterized in that: A spring is arranged on one end of the exhaust pipe located inside the conical cylinder, and a flexible filter screen is coated on the outer side of the spring.

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