Intelligent experimental device for multi-gas commingling production of natural gas hydrate

Abstract

The invention provides a natural gas hydrate multi-gas commingling production intelligent experimental device, which belongs to the technical field of natural gas hydrate production, and comprises a high-pressure reaction kettle, a gas transmission assembly, a water transmission assembly, an exhaust assembly, a heat exchange assembly, a water-gas separator, a fiber board and a drainage assembly. A plurality of cavities are formed in the high-pressure reaction kettle, pressure detectors are connected to the inner walls of one sides of the cavities in a penetrating mode, the gas conveying assembly is arranged on one side of the high-pressure reaction kettle, the water conveying assembly is arranged on the back face of the high-pressure reaction kettle, the exhaust assembly is arranged on the other side of the high-pressure reaction kettle, and the outer wall of the high-pressure reaction kettle is sleeved with the heat exchange assembly. The water-gas separator is arranged on one side of the exhaust assembly, the fiber board is connected into the water-gas separator in a penetrating mode, and the drainage assembly is connected with the water-gas separator. According to the device, the moisture in the gas can be reduced in a high-temperature environment, and the water content in the gas is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas hydrate exploitation, and particularly relates to an intelligent experimental device for multi-gas combined production of natural gas hydrates. Background Art

[0002] The intelligent experimental device for multi-gas combined production of natural gas hydrates is an experimental platform integrating advanced technologies, aiming to simulate the multi-gas combined production process of natural gas hydrates and the underlying gas layer.

[0003] At the end of the test, the collected gas and liquid are separated. The traditional separation method is to directly slow down the gas flow speed through a water-gas separator. When the gas flow speed slows down, larger water droplets naturally fall due to gravity and accumulate at the bottom of the separator, thus achieving the purpose of water-gas separation. However, when used in a high-temperature environment, the water accumulated at the bottom of the separator still evaporates, and the evaporated water vapor flows with the gas, so that the output gas still contains moisture. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent experimental device for multi-gas combined production of natural gas hydrates, which can reduce the moisture in the gas and lower the water content in the gas under high-temperature environments.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An intelligent experimental device for multi-gas combined production of natural gas hydrates, characterized in that it includes a high-pressure reaction kettle, a gas transmission component, a water transmission component, an exhaust component, a heat exchange component, a water-gas separator, a fiber board, and a drainage component.

[0007] A plurality of chambers are provided inside the high-pressure reaction kettle, and pressure detectors are inserted and connected to the inner walls on one side of the plurality of chambers. The gas transmission component is arranged on one side of the high-pressure reaction kettle, and the gas transmission component is used to input gas into the plurality of chambers. The water transmission component is arranged on the back of the high-pressure reaction kettle, and the water transmission component is used to input liquid into the plurality of chambers. The exhaust component is arranged on the other side of the high-pressure reaction kettle, the heat exchange component is sleeved on the outer wall of the high-pressure reaction kettle, the water-gas separator is arranged on one side of the exhaust component, the water-gas separator is used to separate gas and liquid, the fiber board is inserted and connected inside the water-gas separator, and the fiber board is used to further remove the liquid in the gas. The drainage component is connected to the water-gas separator.

[0008] Further, the gas transmission component includes a gas transmission branch pipe, a first electromagnetic valve, a gas transmission main pipe, a pressure pump, and a gas storage tank.

[0009] One end of the gas transmission main pipe is connected to the gas transmission branch pipe, and the other end of the gas transmission main pipe is connected to the output end of the gas storage tank. The gas transmission branch pipe is inserted and connected to the inner wall on one side of the chamber. The first solenoid valve is arranged in the middle of the gas transmission branch pipe, and the pressurizing pump is arranged in the middle of the gas transmission main pipe.

[0010] Further, the water delivery component includes a water inlet branch pipe and a second solenoid valve.

[0011] One end of the water inlet branch pipe is provided with a pump body, the other end of the water inlet branch pipe is inserted and connected to the inner wall on the back of the high-pressure reactor, and the second solenoid valve is arranged in the middle of the water inlet branch pipe.

[0012] Further, the exhaust component includes an exhaust main pipe, a back pressure valve and an exhaust branch pipe.

[0013] One end of the exhaust branch pipe is inserted and connected to the inner wall on the other side of the chamber, the other end of the exhaust branch pipe is connected to the exhaust main pipe, the exhaust branch pipe is inserted and connected to one side of the water-gas separator, and the back pressure valve is arranged in the middle of the exhaust branch pipe.

[0014] Further, the heat exchange component includes a fixed frame and a plurality of heat exchange tubes.

[0015] The fixed frame is sleeved on the outer wall of the high-pressure reactor, and the plurality of heat exchange tubes are inserted and connected inside the fixed frame. The heat exchange tubes are used to adjust the temperature inside the chamber.

[0016] Further, the water-gas separator includes a baffle plate, a breathable pipe, an outlet pipe, a water outlet pipe and a drain port.

[0017] The baffle plate is inserted and connected inside the water-gas separator. The baffle plate is arranged below the fiber board. A breathable pipe is inserted through the middle of the baffle plate. A drain port is opened at the top of the baffle plate. The outlet pipe is inserted and connected to the other side of the water-gas separator. The water outlet pipe is inserted and connected to the bottom of the water-gas separator. Solenoid valves are arranged on both the outlet pipe and the water outlet pipe.

[0018] Further, the drainage component includes a cylinder, a limiting block, a first connecting rod, a connecting plate, a second connecting rod, a limiting ring, a sealing gasket and a driving block. The drainage component is used to close and open the drain port.

[0019] The cylinder is fixedly connected to the top of the water-gas separator. The output end of the cylinder is fixedly connected to a connecting plate. A first connecting rod is inserted through one side of the connecting plate. A limiting block is fixedly connected to the top of the first connecting rod. A limiting ring is sleeved on the middle of the first connecting rod. Both the limiting block and the limiting ring are used to limit the movement of the first connecting rod. The second connecting rod is fixedly connected to the bottom of the other side of the connecting plate.

[0020] The two sealing gaskets are symmetrically arranged at the bottom of the baffle in the horizontal longitudinal center. Driven blocks are fixedly connected to the bottoms of the two sealing gaskets respectively. The bottom of the first connecting rod is fixedly connected to the top end of one driven block, and the bottom of the second connecting rod is fixedly connected to the top end of the other driven block. First arc grooves are formed on the opposite sides of the two driven blocks, and second arc grooves are formed on the opposite sides of the two sealing gaskets. The air permeable pipe is inserted and connected inside the first arc groove and the second arc groove.

[0021] Further, a rubber ring is arranged at the connection between the first connecting rod and the baffle.

[0022] Further, the fiber board is woven by a number of fine polyamide fibers, and the fiber board is a porous structure.

[0023] Further, flow meters are arranged in the middle of the gas distribution branch pipe and the water inlet branch pipe.

[0024] Advantages of the present invention:

[0025] Through the design of the fiber board and the drainage assembly, the fiber board provided by the present invention is woven by a large number of fine fibers to form a porous structure. This structure allows gas to pass through while effectively capturing the moisture in the gas. When using the high-temperature experimental device, the fiber board is used to block the moisture in the gas, thereby reducing the moisture contained in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0027] Figure 2 is a schematic top view structure diagram of the present invention;

[0028] Figure 3 is a schematic partial front view structure of the present invention Figure 1 ;

[0029] Figure 4 is the Figure 3 magnified structure diagram of part A in the present invention;

[0030] Figure 5 is a schematic partial front view structure of the present invention Figure 2 ;

[0031] Figure 6 is a schematic partial three-dimensional structure diagram of the present invention;

[0032] In the figure: 1. High-pressure reaction kettle; 101. Chamber; 102. Pressure detector;

[0033] 2. Gas transmission component; 201. Gas transmission branch pipe; 202. First solenoid valve; 203. Gas transmission main pipe; 204. Pressure pump; 205. Gas storage tank;

[0034] 3. Water transmission component; 301. Water inlet branch pipe; 302. Second solenoid valve;

[0035] 4. Exhaust component; 401. Exhaust main pipe; 402. Back pressure valve; 403. Exhaust branch pipe;

[0036] 5. Heat exchange component; 501. Fixed frame; 502. Heat exchange pipe;

[0037] 6. Water-gas separator; 601. Baffle; 602. Vent pipe; 603. Outlet pipe; 604. Outlet water pipe; 605. Drainage port;

[0038] 7. Fiber board;

[0039] 8. Drainage component; 801. Cylinder; 802. Limit block; 803. First connecting rod; 804. Connecting plate; 805. Second connecting rod; 806. Limit ring; 807. Sealing gasket; 808. Driving block;

[0040] 9. Rubber ring. Specific implementation mode

[0041] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0042] As Figures 1 - 5 shown, a multi-gas combined production intelligent experimental device for natural gas hydrate is characterized in that it includes a high-pressure reactor 1, a gas transmission component 2, a water transmission component 3, an exhaust component 4, a heat exchange component 5, a water-gas separator 6, a fiber board 7 and a drainage component 8.

[0043] The interior of the high-pressure reactor 1 is provided with a number of chambers 101. One inner wall of each of the number of chambers 101 is inserted and connected with a pressure detector 102. The gas transmission assembly 2 is arranged on one side of the high-pressure reactor 1, and the gas transmission assembly 2 is used to input gas into the number of chambers 101. The water transmission assembly 3 is arranged on the back of the high-pressure reactor 1, and the water transmission assembly 3 is used to input liquid into the number of chambers 101. The exhaust assembly 4 is arranged on the other side of the high-pressure reactor 1. The heat exchange assembly 5 is sleeved on the outer wall of the high-pressure reactor 1. The water-gas separator 6 is arranged on one side of the exhaust assembly 4, and the water-gas separator 6 is used to separate gas and liquid. The fiber board 7 is inserted and connected inside the water-gas separator 6, and the fiber board 7 is used to further remove the liquid in the gas. The drainage assembly 8 is connected to the water-gas separator 6.

[0044] The number of chambers 101 opened inside the high-pressure reactor 1 is three. Loose sediments are filled in the top chamber 101, methane gas and deionized water are injected into the top chamber 101, and the temperature is awaited for the formation of methane hydrate. Until the formation of hydrate is completed, the temperature and the pressure inside the top chamber 101 are adjusted again within the hydrate phase equilibrium range to maintain the temperature and pressure of the hydrate accumulation simulation subsystem as the simulated formation temperature and pressure of the seabed hydrate reservoir. Natural cores are filled in the middle chamber 101. First, the required water is injected into the middle chamber 101, and then methane gas is injected into it. The temperature of the middle chamber 101 is adjusted so that the temperature and pressure of the middle chamber 101 are the simulated formation temperature and pressure of the shallow gas layer on the seabed. Natural cores are filled in the bottom chamber 101, methane gas is injected, and the temperature of the bottom chamber 101 is adjusted so that the temperature and pressure of the bottom chamber 101 are the simulated formation temperature and pressure of the actual deep gas layer on the seabed. Different reservoirs can be combined according to the number of combined production layers and the size of the reserve scale to form experimental models with different physical property characteristics, and then the multi-gas combined production process of the hydrate system can be simulated.

[0045] As a preferred embodiment of the present invention, the gas transmission assembly 2 includes a gas transmission sub-pipe 201, a first solenoid valve 202, a gas transmission main pipe 203, a pressure pump 204, and a gas storage tank 205.

[0046] One end of the gas transmission main pipe 203 is connected to the gas transmission sub-pipe 201, the other end of the gas transmission main pipe 203 is connected to the output end of the gas storage tank 205. The gas transmission sub-pipe 201 is inserted and connected to the inner wall on one side of the chamber 101. The first solenoid valve 202 is arranged in the middle of the gas transmission sub-pipe 201. The pressure pump 204 is arranged in the middle of the gas transmission main pipe 203.

[0047] The gas storage tank 205 is used to store the required methane gas. During use, a pressure pump 204 is used to pressurize the gas inside the gas storage tank 205 and transport it to the inside of the gas transmission branch pipe 201. When it is necessary to transport the gas to the inside of the required chamber 101, the first solenoid valve 202 on the corresponding gas transmission branch pipe 201 can be directly opened.

[0048] As a preferred embodiment of the present invention, the water delivery assembly 3 includes a water inlet branch pipe 301 and a second solenoid valve 302.

[0049] One end of the water inlet branch pipe 301 is provided with a pump body, which is used to input the required water into the chamber 101 during use. The other end of the water inlet branch pipe 301 is inserted and connected to the inner wall of the back of the high-pressure reactor 1. The second solenoid valve 302 is arranged in the middle of the water inlet branch pipe 301, and its opening and closing are controlled by a signal during use.

[0050] As a preferred embodiment of the present invention, the exhaust assembly 4 includes an exhaust main pipe 401, a back pressure valve 402 and an exhaust branch pipe 403.

[0051] One end of the exhaust branch pipe 403 is inserted and connected to the inner wall of the other side of the chamber 101. The other end of the exhaust branch pipe 403 is connected to the exhaust main pipe 401. The exhaust branch pipe 403 is inserted and connected to one side of the water-gas separator 6. The back pressure valve 402 is arranged in the middle of the exhaust branch pipe 403.

[0052] The back pressure valve 402 is an existing pneumatic back pressure valve. The opening and closing of the valve core are controlled by a pneumatic actuator. The pneumatic signal comes from the control system, which can realize remote control and adjustment. When conducting the natural gas hydrate depressurization and multi-gas combined production experiment, the mining is carried out by the depressurization method. The natural gas hydrate multi-gas combined production can be carried out according to the demand. The mining is carried out through the preset depressurization scheme by the back pressure valve 402, and the gas obtained after mining enters the exhaust main pipe 401 from the exhaust branch pipe 403, and the mined material enters the water-gas separator 6 through the exhaust main pipe 401.

[0053] As a preferred embodiment of the present invention, the heat exchange assembly 5 includes a fixed frame 501 and a plurality of heat exchange tubes 502.

[0054] The fixed frame 501 is sleeved on the outer wall of the high-pressure reactor 1. The plurality of heat exchange tubes 502 are inserted and connected inside the fixed frame 501. The heat exchange tubes 502 are used to adjust the temperature inside the chamber 101.

[0055] The number of the heat exchange tubes 502 is three, and heat exchangers are arranged at one ends of the three heat exchange tubes 502, which are used to adjust the temperature inside the three chambers 101 during use.

[0056] As a preferred embodiment of the present invention, the water-gas separator 6 includes a baffle 601, a vent pipe 602, an outlet pipe 603, a drain pipe 604, and a drain port 605.

[0057] The baffle 601 is inserted and connected inside the water-gas separator 6. The baffle 601 is arranged below the fiber board 7. The middle of the baffle 601 is inserted and connected with a vent pipe 602. A drain port 605 is opened at the top end of the baffle 601. The outlet pipe 603 is inserted and connected to the other side of the water-gas separator 6. The drain pipe 604 is inserted and connected to the bottom of the water-gas separator 6. Solenoid valves are provided on both the outlet pipe 603 and the drain pipe 604.

[0058] The solenoid valves on the outlet pipe 603 and the drain pipe 604 are used to control the discharge of gas and liquid from the water-gas separator 6 during use. When the mined natural gas enters the inside of the water-gas separator 6, it is blocked by the baffle 601, the vent pipe 602, and the drainage assembly 8, so that it cannot directly move to the side of the outlet pipe 603, and the gas flow rate is slowed down by the block. When the gas flow rate slows down, larger water droplets fall naturally due to gravity and gather at the bottom of the separator.

[0059] As a preferred embodiment of the present invention, as Figures 4 - 6 shown, the drainage assembly 8 includes a cylinder 801, a limiting block 802, a first connecting rod 803, a connecting plate 804, a second connecting rod 805, a limiting ring 806, a sealing gasket 807, and a driving block 808. The drainage assembly 8 is used to close and open the drain port 605.

[0060] The cylinder 801 is fixedly connected to the top end of the water-gas separator 6. The output end of the cylinder 801 is fixedly connected with a connecting plate 804. The first connecting rod 803 is inserted and connected to one side of the connecting plate 804. The top end of the first connecting rod 803 is fixedly connected with a limiting block 802. A limiting ring 806 is sleeved on the middle of the first connecting rod 803. Both the limiting block 802 and the limiting ring 806 are used to limit the movement of the first connecting rod 803. The second connecting rod 805 is fixedly connected to the bottom of the other side of the connecting plate 804.

[0061] Two sealing gaskets 807 are horizontally and longitudinally symmetrically arranged at the bottom of the baffle 601. Two driving blocks 808 are respectively fixedly connected to the bottoms of the two sealing gaskets 807. The bottom of the first connecting rod 803 is fixedly connected to the top end of one driving block 808. The bottom of the second connecting rod 805 is fixedly connected to the top end of the other driving block 808. First arc grooves are opened on the opposite sides of the two driving blocks 808. Second arc grooves are opened on the opposite sides of the two sealing gaskets 807. The vent pipe 602 is inserted and connected inside the first arc groove and the second arc groove.

[0062] The sealing gasket 807 is made of rubber. When in use, it is used to block the drain port 605 on the baffle 601 to prevent gas from directly entering the top of the water-gas separator 6 through the drain port 605 during use. When it is necessary to drain the water at the top of the water-gas separator 6, the driving block 808 and the sealing gasket 807 are driven by moving, so that the water at the top of the water-gas separator 6 is discharged from the cavity at the top of the water-gas separator 6 through the drain port 605.

[0063] As a preferred embodiment of the present invention, a rubber ring 9 is provided at the connection between the first connecting rod 803 and the baffle 601.

[0064] The air cylinder 801 is an existing mechanism for driving an object to move linearly. When in use, the connecting plate 804 is driven by the air cylinder 801 to move up and down. A sealing ring is provided at the connection between the output end of the air cylinder 801 and the water-gas separator 6; both ends of the second connecting rod 805 are fixedly connected to the side of the connecting plate 804 opposite to one of the driving blocks 808. When in use, one of the driving blocks 808 is directly driven to move by the connecting plate 804; the rubber ring 9 is fixedly inserted through the middle of the baffle 601, and the first connecting rod 803 is inserted through the middle of the rubber ring 9, and the rubber ring 9 is extruded and deformed by the first connecting rod 803. There are a large number of microscopic protrusions on the surface of the rubber material. When contacting another object, these protrusions can be embedded in the tiny depressions on the surface of the other object, thus forming a mechanical locking effect and increasing the friction. A through hole is provided on one side of the connecting plate 804, and the first connecting rod 803 is inserted through the inside of the through hole. When the connecting plate 804 moves, the first connecting rod 803 is blocked by the rubber ring 9, so that the connecting plate 804 can slide on the first connecting rod 803 through the through hole. When the connecting plate 804 moves to fit with the limiting block 802 and the limiting ring 806, the first connecting rod 803 is driven to move by the push of the limiting block 802 and the limiting ring 806.

[0065] When it is necessary to drain the water in the top cavity of the water-gas separator 6, first open the cylinder 801. The cylinder 801 drives the connecting plate 804 to move, and the connecting plate 804 drives the second connecting rod 805 and one of the driving blocks 808 to move. One of the driving blocks 808 drives one of the sealing gaskets 807 to move away from the baffle 601. At this time, the first connecting rod 803 is blocked by the rubber ring 9, so that the connecting plate 804 can slide on the first connecting rod 803 through the through hole, and the other driving block 808 cannot move, causing the two driving blocks 808 to separate. When the connecting plate 804 moves to fit the top of the limiting ring 806, the connecting plate 804 drives the first connecting rod 803 and the other driving block 808 to move. At this time, the two driving blocks 808 separate, allowing water to flow out through the gap between the two driving blocks 808, thereby draining the water.

[0066] As a preferred embodiment of the present invention, the fiber board 7 is woven by a number of fine polyamide fibers, and the fiber board 7 has a porous structure. The porous structure allows gas to pass through while effectively capturing the moisture in the gas, thereby reducing the moisture content in the gas.

[0067] As a preferred embodiment of the present invention, flow meters are provided in the middle of both the gas transmission branch pipe 201 and the water inlet branch pipe 301. The flow meter in the middle of the gas transmission branch pipe 201 is used to observe the gas transmission volume, and the flow meter in the middle of the water inlet branch pipe 301 is used to record the water flow rate.

[0068] The above are only preferred embodiments of the present invention and are not used to limit the present invention. Those skilled in the art can still adjust the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Therefore, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and its equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. An intelligent experimental device for multi-gas production of natural gas hydrates, characterized by: It comprises a high-pressure reactor (1), a gas delivery component (2), a water delivery component (3), an exhaust component (4), a heat exchange component (5), a water-gas separator (6), a fiberboard (7) and a drainage component (8); The high-pressure reactor (1) is provided with a plurality of chambers (101) inside, and the inner walls of one side of the plurality of chambers (101) are all connected with pressure detectors (102) through and through. The gas supply component (2) is arranged on one side of the high-pressure reactor (1), and the gas supply component (2) is used to supply gas into the plurality of chambers (101). The water supply component (3) is arranged on the back side of the high-pressure reactor (1), and the water supply component (3) is used to supply liquid into the plurality of chambers (101). The exhaust component (4) is arranged on the other side of the high-pressure reactor (1). The heat exchange component (5) is sleeved on the outer wall of the high-pressure reactor (1). The water-gas separator (6) is arranged on one side of the exhaust component (4), and the water-gas separator (6) is used to separate gas and liquid. The fiberboard (7) is connected through and through the interior of the water-gas separator (6), and the fiberboard (7) is used to further remove liquid from the gas. The drainage component (8) is connected to the water-gas separator (6).

2. According to claim 1, a natural gas hydrate multi-gas co-production intelligent experimental device is characterized by: The gas transmission assembly (2) comprises a gas transmission branch pipe (201), a first solenoid valve (202), a gas transmission main pipe (203), a booster pump (204) and a gas storage tank (205); One end of the gas main pipe (203) is connected to the gas branch pipe (201), and the other end of the gas main pipe (203) is connected to the output end of the gas storage tank (205). The gas branch pipe (201) is inserted and connected to the inner wall of one side of the chamber (101). The first solenoid valve (202) is arranged in the middle of the gas branch pipe (201), and the booster pump (204) is arranged in the middle of the gas main pipe (203).

3. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 2 is characterized by: The water delivery assembly (3) comprises a water inlet branch (301) and a second solenoid valve (302); A pump body is provided at one end of the water inlet branch (301), and the other end of the water inlet branch (301) is inserted and connected to the inner wall at the back of the high-pressure reactor (1). The second solenoid valve (302) is provided in the middle of the water inlet branch (301).

4. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 3 is characterized by: The exhaust assembly (4) comprises an exhaust main pipe (401), a back pressure valve (402) and an exhaust branch pipe (403); One end of the exhaust branch pipe (403) is inserted and connected to the inner wall of the other side of the chamber (101), and the other end of the exhaust branch pipe (403) is connected to the exhaust main pipe (401). The exhaust branch pipe (403) is inserted and connected to one side of the water-gas separator (6), and the back pressure valve (402) is arranged in the middle of the exhaust branch pipe (403).

5. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 4, characterized in that: The heat exchange component (5) comprises a fixing frame (501) and a plurality of heat exchange tubes (502); The fixing frame (501) is sleeved on the outer wall of the high-pressure reactor (1), and the plurality of heat exchange tubes (502) are inserted and connected inside the fixing frame (501). The heat exchange tubes (502) are used to adjust the temperature inside the chamber (101).

6. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 5, characterized in that: The water-gas separator (6) comprises a baffle (601), a vent pipe (602), an air outlet pipe (603), a water outlet pipe (604) and a water outlet (605); The baffle (601) is inserted and connected inside the water-gas separator (6); the baffle (601) is arranged below the fiberboard (7); a ventilation pipe (602) is inserted and connected in the middle of the baffle (601); a drainage port (605) is provided at the top of the baffle (601); the air outlet pipe (603) is inserted and connected at the other side of the water-gas separator (6); the water outlet pipe (604) is inserted and connected at the bottom of the water-gas separator (6); and solenoid valves are provided on both the air outlet pipe (603) and the water outlet pipe (604).

7. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 6, characterized in that: The drainage assembly (8) comprises a cylinder (801), a limiting block (802), a first connecting rod (803), a connecting plate (804), a second connecting rod (805), a limiting ring (806), a sealing gasket (807) and a driving block (808), and the drainage assembly (8) is used to close and open the drainage port (605); The cylinder (801) is fixedly connected to the top of the water-gas separator (6); the output end of the cylinder (801) is fixedly connected to a connecting plate (804); the first connecting rod (803) is inserted and connected to one side of the connecting plate (804); the top of the first connecting rod (803) is fixedly connected to a limiting block (802); the middle of the first connecting rod (803) is sleeved with a limiting ring (806); the limiting block (802) and the limiting ring (806) are both used to limit the movement of the first connecting rod (803); the second connecting rod (805) is fixedly connected to the bottom of the other side of the connecting plate (804); The two sealing gaskets (807) are horizontally and longitudinally centrally symmetrically arranged at the bottom of the baffle (601); the bottoms of the two sealing gaskets (807) are respectively fixedly connected to two driving blocks (808); the bottom of the first connecting rod (803) is fixedly connected to the top of one driving block (808); the bottom of the second connecting rod (805) is fixedly connected to the top of the other driving block (808); the two driving blocks (808) are each provided with a first arc groove on one side opposite to the other; the two sealing gaskets (807) are each provided with a second arc groove on one side opposite to the other; and the air vent (602) is inserted and connected inside the first arc groove and the second arc groove.

8. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 7, characterized in that: A rubber ring (9) is provided at the connection between the first connecting rod (803) and the baffle (601).

9. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 8, characterized in that: The fiberboard (7) is formed by interweaving a plurality of fine polyamide fibers, and the fiberboard (7) is a porous structure.

10. The intelligent experimental device for multi-gas production of natural gas hydrate according to claim 9, characterized in that: Flow meters are provided in the middle of the gas transmission branch pipe (201) and the water inlet branch pipe (301).

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