Geothermal water water gas separation device

Abstract

The present application relates to geothermal water treatment technical field, disclose a kind of geothermal water water gas separation device, including tank body, tank cover being located at the top of tank body, inlet being located at the top of tank body, drain outlet being located at the bottom of tank body and exhaust port being located at the top of tank cover, further including multistage water collecting assembly being located in the middle of the inner cavity of tank body and resonance separation assembly being located in the inner cavity of tank body;Multistage water collecting assembly includes three groups of arc water collecting pipes being spaced apart along the axial direction of tank body and spiral water injection pipe being communicated with inlet;Resonance separation assembly includes umbrella-shaped water catcher being fixedly installed in tank cover, vertical rod being fixedly connected in the center of umbrella-shaped water catcher and extending downward, and three groups of floating units being arranged on vertical rod;The present application is provided with floating unit, so that conical screen disc produces continuous vibration when fluid impact, and the vibration forms shear force and local disturbance in fluid, which can break the stable state of micro-bubbles in water body, promote its desorption and collision coalescence.

Description

Technical Field

[0001] This invention relates to the field of geothermal water treatment technology, and in particular to a geothermal water dissolved gas separation device. Background Technology

[0002] In the field of geothermal energy development and utilization, geothermal water, as an important clean energy source, is usually extracted through geothermal wells. The extracted high-temperature geothermal fluid is a complex thermodynamic system. In addition to being rich in thermal energy, it often contains a large amount of non-condensable gases, mainly composed of carbon dioxide, hydrogen sulfide, and methane. The traditional treatment process usually follows this procedure: After the geothermal water is produced from the wellhead, it first passes through a wellhead desander to remove solid rock debris particles carried in the fluid. Then, the geothermal water, after preliminary purification, enters a degassing tank, where dissolved gas is separated and discharged through an external pipeline. The geothermal water that has completed the degassing treatment is transported by a circulating pump to a plate heat exchanger for heat exchange. Finally, the treated geothermal water is widely used for district heating, power generation, and industrial and agricultural heat sources.

[0003] A geothermal degassing device and geothermal extraction system disclosed in CN221400458U under atmospheric pressure includes a tank, a gas outlet at the top of the tank, and a geothermal outlet at the bottom of the tank; a geothermal screen tube assembly disposed within the tank and located between the gas outlet and the geothermal outlet, with its input end located outside the tank and capable of communicating with the geothermal extraction pipe assembly; and two baffles, each with multiple water passage holes on its surface, arranged from top to bottom within the tank and located between the geothermal screen tube assembly and the geothermal outlet. While the above technical solution effectively distributes geothermal water evenly through the geothermal screen tube assembly and baffles, increasing the geothermal flow path and providing the advantage of increasing the dissolved gas diffusion area, this design is not universally applicable.

[0004] However, in existing technologies, geothermal fluid extraction is often subject to dynamic interferences such as sudden changes in flow velocity and pressure pulses. Traditional degassing equipment is not only limited by static separation chambers and fixed flow channel structures, making it difficult to adapt to dynamic changes in flow velocity and pressure, but also, during water-dissolved gas separation, geothermal water directly enters the separation chamber and relies solely on the static chamber for natural separation. This makes it difficult to break the stable state of microbubbles in the water to promote their desorption. Furthermore, when the flow rate or pressure fluctuates, it cannot be adjusted in time. When the flow rate increases, the geothermal water flows faster in the tank, and microbubbles are not able to fully coalesce before being carried away by the rapid water flow. When the flow rate decreases, insufficient water flow power slows down the rising rate of bubbles, making them prone to stagnation in the water, resulting in incomplete separation. The unseparated non-condensable gases enter the subsequent heat exchange system with the geothermal water and form a gas film on the surface of the heat exchanger, hindering heat transfer and affecting the overall heat exchange effect. Summary of the Invention

[0005] The purpose of this invention is to provide a geothermal water dissolved gas separation device to solve the problems of unstable separation effect and poor adaptability of traditional degassing equipment mentioned in the background art when the flow rate and pressure fluctuate.

[0006] The present invention provides a geothermal water dissolved gas separation device, which adopts the following technical solution:

[0007] A geothermal water dissolved gas separation device includes a tank, a tank cover at the top of the tank, a liquid inlet on the upper side wall of the tank, a drain outlet at the bottom of the tank, and an exhaust outlet at the top of the tank cover. It also includes a multi-stage water collection assembly in the middle of the inner cavity of the tank and a resonant separation assembly in the inner cavity of the tank.

[0008] The multi-stage water collection assembly includes three sets of arc-shaped water collection pipes spaced apart along the axial direction of the tank and a spiral water injection pipe connected to the liquid inlet. The outlet end of each set of arc-shaped water collection pipes is connected to a water collection bend, and each set of water collection bends is equipped with multiple water outlet pipes. The inlet end of each set of arc-shaped water collection pipes is connected to the spiral water injection pipe through a bridging pipe.

[0009] The resonant separation assembly includes an umbrella-shaped water-catching plate fixedly installed inside the tank cover, a vertical rod fixedly connected to the center of the umbrella-shaped water-catching plate and extending downward, and three sets of floating units on the vertical rod. The umbrella-shaped water-catching plate is located below the exhaust port and is used to collect the separated gas and prevent droplets from being carried out. The position of the floating units on the vertical rod corresponds to the level of the arc-shaped water collection pipe. Each set of floating units includes a positioning ring fixedly connected to the vertical rod, a sliding ring slidably sleeved on the vertical rod, and a conical screen plate fixedly connected to the sliding ring. The height of the conical screen plate is slightly higher than the corresponding arc-shaped water collection pipe. The conical screen plate is provided with several separation holes distributed in a spiral shape. An elastic support is provided between the positioning ring and the sliding ring.

[0010] Furthermore, each set of arc-shaped water collection pipes is provided with multiple adjustment mechanisms at circumferential intervals. The adjustment mechanism includes a connecting pipe communicating with the arc-shaped water collection pipe, a cylinder communicating with the connecting pipe, a piston ring slidably disposed in the cylinder, a push rod fixedly connected to the piston ring, and a return spring sleeved on the push rod. The two ends of the return spring are fixedly connected to the cylinder and the piston ring, respectively. The other end of the push rod extends out of the cylinder and is hinged to a connecting rod. The other end of the connecting rod is hinged to the edge of the corresponding conical screen plate.

[0011] Furthermore, the elastic support includes an outer sleeve fixedly connected to the positioning ring, an annular cavity opened in the outer sleeve, an inner sleeve slidably inserted in the annular cavity, a limiting plate fixedly connected to the bottom of the inner sleeve, and a support spring provided on the inner sleeve, with the two ends of the support spring connected to the sliding ring and the outer sleeve respectively.

[0012] Furthermore, a retaining ring is fixedly connected inside the cylinder, and the retaining ring contacts and engages with the piston ring.

[0013] Furthermore, the bottom of the retaining ring is provided with a sealing gasket that makes sealing contact with the connecting pipe.

[0014] Furthermore, the bottom of the conical screen is provided with multiple sets of guide vanes spaced circumferentially.

[0015] Furthermore, the separation hole is located in the area between two adjacent sets of guide vanes.

[0016] Furthermore, the bottom edge of the guide vane is serrated.

[0017] Furthermore, the outer cover of the elastic support is provided with a flexible protective sleeve, and the two ends of the flexible protective sleeve are fixedly connected to the positioning ring and the sliding ring, respectively.

[0018] Furthermore, both the water collection bend and the water outlet pipe are located below the corresponding conical screen plate.

[0019] The beneficial effects of this invention are:

[0020] 1. By setting up a floating unit, the positioning ring, sliding ring, and elastic support components form an elastic suspension structure, which puts the conical screen disc in a self-adaptive and buffered vibration state. The downward-facing design of the conical screen disc, combined with the serrated guide vanes at the bottom, can guide the fluid to form local swirling flow and generate micro eddies, breaking the laminar flow state, thereby effectively solving the problem of flow field instability in traditional equipment. The spirally distributed separation holes can provide a fast floating channel for the agglomerated bubbles. At the same time, through the interaction of the outer sleeve, inner sleeve, and support spring, the conical screen disc generates continuous vibration when the fluid impacts. This vibration generates shear force and local disturbance in the fluid, which can break the stable state of microbubbles in the water, promote their desorption and collision aggregation. Meanwhile, the continuous mechanical vibration can inhibit the deposition and scaling of minerals on the surface of the conical screen disc.

[0021] 2. By setting up an adjustment mechanism, when the local hot water flow rate is low and the pressure is low, the conical screen plate generates a low-amplitude, low-frequency resonance, which is suitable for the slow precipitation of bubbles under low flow rate. When the flow rate increases and the pressure rises, the piston ring, push rod and connecting rod work together to apply an upward lifting force to the conical screen plate, which triggers a strong resonance with high amplitude and high frequency. This generates stronger shear force and violent disturbance in the fluid, which efficiently promotes the desorption and aggregation of a large number of microbubbles, significantly improving the separation efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a front view cross-sectional view of the tank body of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the arc-shaped water collection pipe, spiral water injection pipe, water collection bend, water outlet pipe, and cross-connection pipe of the present invention.

[0025] Figure 4 This is a three-dimensional structural diagram of the vertical rod and floating unit of the present invention;

[0026] Figure 5 This is a partial cross-sectional view of the vertical rod and floating unit of the present invention.

[0027] Figure 6 This is a three-dimensional cross-sectional view of the positioning ring, sliding ring, and elastic support member of the present invention.

[0028] Figure 7 This is an exploded three-dimensional structural diagram of the positioning ring, sliding ring, flexible protective sleeve, and support spring of the present invention.

[0029] Figure 8 This is a bottom view cross-sectional diagram of the arc-shaped water collecting pipe, water collecting bend, water outlet pipe, and conical screen plate of the present invention.

[0030] Figure 9 This is a three-dimensional structural diagram of the arc-shaped water collecting pipe, vertical rod, positioning ring, sliding ring, conical screen plate, and adjusting mechanism of the present invention;

[0031] Figure 10 This is a partial cross-sectional view of the three-dimensional structure of the arc-shaped water collection pipe, vertical rod, conical screen plate, and adjustment mechanism of the present invention;

[0032] Figure 11 This is a partial cross-sectional view of the three-dimensional structure of the arc-shaped water collection pipe and the regulating mechanism of the present invention.

[0033] Figure 12 This is an exploded three-dimensional structural diagram of the connecting pipe, cylinder, piston ring, push rod, return spring, retaining ring, and sealing gasket of the present invention.

[0034] In the picture:

[0035] 1. Tank body; 2. Tank cover; 3. Liquid inlet; 4. Drain outlet; 5. Vent outlet; 6. Arc-shaped water collection pipe; 7. Spiral water injection pipe; 8. Water collection bend; 9. Water outlet pipe; 10. Bridging pipe; 11. Umbrella-shaped water trap; 12. Vertical rod; 13. Floating unit; 131. Positioning ring; 132. Sliding ring; 133. Conical sieve plate; 134. Elastic support component; 1341. Outer sleeve; 1342. Annular cavity; 1343. Inner sleeve; 1344. Limiting plate; 1345. Support spring; 135. Separation hole; 136. Guide vane; 137. Flexible protective sleeve; 14. Adjustment mechanism; 141. Connecting pipe; 142. Cylinder body; 143. Piston ring; 144. Push rod; 145. Return spring; 146. Connecting rod; 147. Retaining ring; 148. Sealing gasket. Detailed Implementation

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Reference Figures 1-2 A geothermal water dissolved gas separation device includes a tank 1, a tank cover 2 at the top of the tank 1, a liquid inlet 3 on the upper side wall of the tank 1, a drain outlet 4 at the bottom of the tank 1, and an exhaust outlet 5 at the top of the tank cover 2. It should be noted that the tank 1 is connected to an external circulation pump, which is controlled by a frequency converter. The frequency converter is combined with a constant liquid level controller to realize automatic start and stop control of the circulation pump. The degassed geothermal water enters a plate heat exchanger through the circulation pump to achieve heat exchange. This composition and principle are well known in the art and will not be described in detail here.

[0038] Reference Figures 2-4 It also includes a multi-stage water collection assembly located in the middle of the inner cavity of the tank body 1 and a resonance separation assembly located in the inner cavity of the tank body 1.

[0039] Specifically, refer to Figures 2-3The multi-stage water collection assembly includes three sets of arc-shaped water collection pipes 6 spaced apart along the axial direction of the tank body 1, and a spiral water injection pipe 7 connected to the inlet 3. The arc-shaped water collection pipes 6 are arranged sequentially from top to bottom along the axial direction of the tank body 1. Each set of arc-shaped water collection pipes 6 is arranged in a ring shape against the inner wall of the tank body 1 and is fixed to the inner wall of the tank body 1 by U-shaped clamps. The spiral water injection pipe 7 is fixed to the upper part of the inner wall of the tank body 1 by U-shaped clamps. Its pipe body extends downward in a spiral shape along the inner wall of the tank body 1. The function of the spiral water injection pipe 7 is to perform flow pretreatment on the geothermal water entering the tank body 1. After the geothermal water enters from the inlet 3, it moves forward at high speed along the spiral channel of the spiral water injection pipe 7. Under the action of centrifugal force, it can achieve preliminary gas-liquid separation. Pre-separation is performed to extend the flow path of the fluid within the tank 1, providing time for the initial precipitation of water-soluble gases and allowing some dissolved gases to form microbubbles in advance. The outlet end of each set of arc-shaped water collection pipes 6 is connected to a water collection bend 8, and each set of water collection bend 8 is equipped with multiple outlet pipes 9. The inlet end of each set of arc-shaped water collection pipes 6 is connected to a spiral water injection pipe 7 through a bridging pipe 10, further ensuring that the inlet pressure and flow rate of each set of arc-shaped water collection pipes 6 are balanced. In this embodiment, the flow path of the fluid is as follows: geothermal water flows from the inlet 3 through the spiral water injection pipe 7 and is simultaneously distributed to the three sets of arc-shaped water collection pipes 6 through the bridging pipe 10, and finally discharged into the tank 1 through multiple outlet pipes 9 on the water collection bend 8.

[0040] Specifically, refer to Figure 2 and Figures 4-5The resonance separation assembly includes an umbrella-shaped water-catching plate 11 fixedly installed inside the tank cover 2, a vertical rod 12 fixedly connected to the center of the umbrella-shaped water-catching plate 11 and extending downward, and three sets of floating units 13 disposed on the vertical rod 12. The umbrella-shaped water-catching plate 11 is located below the exhaust port 5 and is used to collect the separated gas and prevent droplets from being carried out. The umbrella-shaped water-catching plate 11 has several sieve holes evenly distributed on it. The function of the umbrella-shaped water-catching plate 11 is to block upward splashing droplets and prevent droplets from being lost from the exhaust port 5 with the gas, while guiding the collected gas to converge towards the exhaust port 5. The three sets of floating units 13 are distributed sequentially from top to bottom along the axial direction of the vertical rod 12. The position of the floating units 13 on the vertical rod 12 corresponds to the level of the arc-shaped water collection pipe 6. Each set of floating units 13 includes a positioning ring 131 fixedly connected to the vertical rod 12, a sliding ring 132 slidably sleeved on the vertical rod 12, and a conical sieve plate 133 fixedly connected to the sliding ring 132. The height is slightly higher than the corresponding arc-shaped water collection pipe 6. The conical screen 133 is provided with a number of separation holes 135 distributed in a spiral shape. The conical part of the conical screen 133 faces downward. The conical structure of the conical screen 133 can guide the diffusion flow of the fluid. An elastic support 134 is provided between the positioning ring 131 and the sliding ring 132. The elastic support 134 makes the conical screen 133 in an elastic suspension state that can adaptively buffer. In this embodiment, when the local hot water flows through the conical screen 133, the fluid can generate vibration while diffusing along the conical surface of the conical screen 133 after contacting the conical surface. This vibration forms shear force and local disturbance in the fluid, which can break the stable state of the bubbles in the fluid, promote the desorption of microbubbles from the water, and push the desorbed bubbles to collide and merge with each other. At the same time, the spirally distributed separation holes 135 can guide the fluid to form a local rotating flow field, further enhancing the separation effect and causing the bubbles to gather towards the center.

[0041] Specifically, refer to Figures 6-7The elastic support 134 includes an outer sleeve 1341 fixedly connected to the positioning ring 131, an annular cavity 1342 opened in the outer sleeve 1341, an inner sleeve 1343 slidably inserted in the annular cavity 1342, a limiting plate 1344 fixedly connected to the bottom of the inner sleeve 1343, and a support spring 1345 provided on the inner sleeve 1343. The two ends of the support spring 1345 are respectively connected to the sliding ring 132 and the outer sleeve 1341. The conical screen plate 133 drives the sliding ring 132 to move up and down, controlling the support spring 1345. 5. The inner sleeve 1343 slides up and down along the annular cavity 1342. The limiting plate 1344 can prevent the inner sleeve 1343 from coming out of the annular cavity 1342. Through the interaction of the outer sleeve 1341, the inner sleeve 1343 and the support spring 1345, the conical screen 133 can generate continuous vibration when the fluid impacts. This vibration can not only promote the desorption and collision aggregation of microbubbles through shear force and disturbance, but also inhibit the deposition and scaling of minerals on the surface of the conical screen 133 through mechanical vibration, thus preventing the separation hole 135 from being blocked.

[0042] The elastic support 134 is covered by a flexible protective sleeve 137. The two ends of the flexible protective sleeve 137 are fixedly connected to the positioning ring 131 and the sliding ring 132, respectively. The flexible protective sleeve 137 can be an elastic corrugated rubber sleeve that can expand and contract with the sliding ring 132 as it slides up and down, thereby sealing and protecting the internal elastic support 134 and preventing impurities such as minerals and silt in the geothermal water from corroding the outer sleeve 1341, the outer sleeve 1341, and the support spring 1345.

[0043] Reference Figure 8 The water collection bend 8 and the water outlet pipe 9 are both located below the corresponding conical screen plate 133, and the outlet pipe 9 is set upward. The discharged fluid needs to flow upward to pass under the corresponding conical screen plate 133, so that the fluid can fully contact the conical screen plate 133.

[0044] Meanwhile, multiple sets of guide vanes 136 are distributed circumferentially at the bottom of the conical screen 133. When the fluid flows from bottom to top through the conical screen 133, the guide vanes 136 guide the water flow to form a local swirling flow in the circumferential direction, increasing the turbulence intensity of the fluid. The separation hole 135 is located in the area between two adjacent sets of guide vanes 136. The separation hole 135 can provide a channel for the bubbles to float up quickly after they have coalesced, preventing the bubbles from being carried away by the water flow. The bottom edge of the guide vane 136 is serrated. The serrated edge can further break the laminar flow state of the fluid, generate micro eddies, and promote the collision and coalescence of the bubbles.

[0045] Furthermore, refer to Figures 9-12Each set of arc-shaped water collection pipes 6 is provided with multiple adjusting mechanisms 14 spaced circumferentially. Each adjusting mechanism 14 includes a connecting pipe 141 communicating with the arc-shaped water collection pipe 6, a cylinder 142 communicating with the connecting pipe 141, a piston ring 143 slidably disposed within the cylinder 142, a push rod 144 fixedly connected to the piston ring 143, and a return spring 145 sleeved on the push rod 144. The two ends of the return spring 145 are respectively fixedly connected to the cylinder 142 and the piston ring 143. The push rod 144... The other end extends to the outside of the cylinder body 142 and is hinged to a connecting rod 146. The other end of the connecting rod 146 is hinged to the edge of the corresponding conical screen plate 133. In this embodiment, the adjusting mechanism 14 can achieve adaptive adjustment through changes in fluid pressure. When the local hot water flow is small and the pressure inside the arc-shaped water collecting pipe 6 is low, the low-pressure fluid enters the cylinder body 142 through the connecting pipe 141 and cannot overcome the resistance of the return spring 145 to push the piston ring 143. At this time, the adjusting mechanism 14 adjusts the conical screen plate 133. The load of 3 has the least impact. Under this state, the conical screen 133 generates a low-amplitude, low-frequency resonance, which can effectively prevent scale adhesion and complete the bubble separation task under low flow conditions. When the local hot water flow increases and the pressure in the arc-shaped water collection pipe 6 increases significantly, the high-pressure fluid enters the cylinder 142 through the connecting pipe 141, pushing the piston ring 143 to overcome the resistance of the return spring 145 and generate displacement. The movement of the piston ring 143 is transmitted to the conical screen 133 through the push rod 144 and the connecting rod 146, applying an upward lifting force to the conical screen 133, providing an additional buoyancy effect to the conical screen 133, triggering a strong resonance with high amplitude and high frequency. The strong resonance generates stronger shear force and violent disturbance in the fluid, which can efficiently promote the desorption of a large number of micro bubbles and accelerate the collision and coalescence of the desorbed bubbles, effectively improving the gas-liquid separation efficiency. At the same time, the high-intensity mechanical vibration can more thoroughly flush the surface of the screen, avoiding scaling caused by the rapid precipitation of minerals under high flow conditions.

[0046] Among them, reference Figure 12 It should be noted that a retaining ring 147 is fixedly connected inside the cylinder body 142. The retaining ring 147 contacts and engages with the piston ring 143. The retaining ring 147 is installed inside the cylinder body 142 on the side near the connecting pipe 141. Its main function is to limit the sliding stroke of the piston ring 143. The bottom of the retaining ring 147 is provided with a sealing gasket 148 that is in sealing contact with the connecting pipe 141. The sealing gasket 148 can be made of rubber and is tightly attached to the interface between the bottom of the retaining ring 147 and the connecting pipe 141. Its function is to improve the sealing performance between the cylinder body 142 and the connecting pipe 141.

[0047] The working principle of a geothermal water dissolved gas separation device is as follows: Geothermal water enters through the inlet 3 and first flows through the spiral water injection pipe 7. Rotational flow is generated in its spiral channel to achieve preliminary gas-liquid pre-separation. Then, the fluid is synchronously distributed to the three sets of arc-shaped water collection pipes 6 through the bridging pipe 10 between the spiral water injection pipe 7 and the three sets of arc-shaped water collection pipes 6. Subsequently, the fluid flows into the water collection bend 8 connected to the outlet end of each set of arc-shaped water collection pipes 6 and is discharged through multiple outlet pipes 9 with the pipe opening facing upward on the water collection bend 8.

[0048] When the fluid flows through the corresponding conical screen 133, it is first guided by the guide vanes 136, forming a local swirling enhanced disturbance. The fluid then passes through the spirally distributed separation holes 135, forming a rotating flow field on the surface of the conical screen 133. Simultaneously, the conical screen 133 is sleeved on the vertical rod 12 via a sliding ring 132. Under the action of the elastic support 134 between the positioning ring 131 and the sliding ring 132, the conical screen 133 is in an elastic suspension state. The fluid impact generates continuous vibration, which creates shear force in the fluid, breaking the stable state of microbubbles in the water, promoting bubble desorption, and simultaneously pushing the desorbed bubbles to collide and coalesce, forming larger bubbles that are easier to float. During this process, as the local hot water flow increases, the pressure inside the arc-shaped water collection pipe 6 rises synchronously. The high-pressure fluid pushes the piston ring 143 to overcome the resistance of the return spring 145 and generate displacement. Through the push rod 144 and connecting rod 146, an upward lifting force is applied to the conical screen plate 133, triggering a strong resonance with high amplitude. The stronger shear force and violent disturbance accelerate the desorption and aggregation of a large number of microbubbles, significantly improving the separation efficiency. At the same time, the high-intensity vibration can thoroughly flush the surface of the screen plate, avoiding scaling caused by the rapid precipitation of minerals under high flow. The aggregated large bubbles continue to float upward under the action of buoyancy, eventually reaching the umbrella-shaped water collection plate 11. The umbrella-shaped water collection plate 11 is used to guide the pure gas to the exhaust port 5 at the top of the tank cover 2 and finally discharge it.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A geothermal water dissolved gas separation device, comprising a tank (1), a tank cover (2) disposed at the top of the tank (1), a liquid inlet (3) disposed above the side wall of the tank (1), a drain outlet (4) disposed at the bottom of the tank (1), and an exhaust outlet (5) disposed at the top of the tank cover (2), characterized in that, It also includes a multi-stage water collection assembly located in the middle of the inner cavity of the tank (1) and a resonance separation assembly located in the inner cavity of the tank (1); The multi-stage water collection assembly includes three sets of arc-shaped water collection pipes (6) spaced apart along the axial direction of the tank body (1) and a spiral water injection pipe (7) connected to the liquid inlet (3). The outlet end of each set of arc-shaped water collection pipes (6) is connected to a water collection bend (8). Each set of water collection bends (8) is provided with multiple water outlet pipes (9). The inlet end of each set of arc-shaped water collection pipes (6) is connected to the spiral water injection pipe (7) through a bridging pipe (10). The resonant separation assembly includes an umbrella-shaped water-catching plate (11) fixedly installed inside the tank cover (2), a vertical rod (12) fixedly connected to the center of the umbrella-shaped water-catching plate (11) and extending downward, and three sets of floating units (13) provided on the vertical rod (12). The umbrella-shaped water-catching plate (11) is located below the exhaust port (5) and is used to collect the separated gas and prevent droplets from being carried out. The position of the floating units (13) on the vertical rod (12) corresponds to the hierarchy of the arc-shaped water collection pipe (6). Each set of floating units... Each element (13) includes a positioning ring (131) fixedly connected to the vertical rod (12), a sliding ring (132) slidably sleeved on the vertical rod (12), and a conical screen plate (133) fixedly connected to the sliding ring (132). The height of the conical screen plate (133) is slightly higher than the corresponding arc-shaped water collection pipe (6). The conical screen plate (133) is provided with a number of separation holes (135) distributed in a spiral shape. An elastic support member (134) is provided between the positioning ring (131) and the sliding ring (132). Each of the arc-shaped water collection pipes (6) is provided with multiple adjustment mechanisms (14) spaced circumferentially. Each adjustment mechanism (14) includes a connecting pipe (141) connected to the arc-shaped water collection pipe (6), a cylinder (142) connected to the connecting pipe (141), a piston ring (143) slidably disposed in the cylinder (142), a push rod (144) fixedly connected to the piston ring (143), and a return spring (145) sleeved on the push rod (144). The two ends of the return spring (145) are fixedly connected to the cylinder (142) and the piston ring (143) respectively. The other end of the push rod (144) extends to the outside of the cylinder (142) and is hinged to a connecting rod (146). The other end of the connecting rod (146) is hinged to the edge of the corresponding conical screen (133).

2. The geothermal water dissolved gas separation device according to claim 1, characterized in that, The elastic support (134) includes an outer sleeve (1341) fixedly connected to the positioning ring (131), an annular cavity (1342) opened in the outer sleeve (1341), an inner sleeve (1343) slidably inserted in the annular cavity (1342), a limiting plate (1344) fixedly connected to the bottom of the inner sleeve (1343), and a support spring (1345) provided on the inner sleeve (1343). The two ends of the support spring (1345) are respectively connected to the sliding ring (132) and the outer sleeve (1341).

3. The geothermal water dissolved gas separation device according to claim 1, characterized in that, A retaining ring (147) is fixedly connected inside the cylinder (142), and the retaining ring (147) is in contact with the piston ring (143).

4. The geothermal water dissolved gas separation device according to claim 3, characterized in that, The bottom of the retaining ring (147) is provided with a sealing gasket (148) that is in sealing contact with the connecting pipe (141).

5. The geothermal water dissolved gas separation device according to claim 1, characterized in that, The bottom of the conical screen (133) has multiple sets of guide vanes (136) spaced out along the circumference.

6. The geothermal water dissolved gas separation device according to claim 5, characterized in that, The separation hole (135) is located in the area between two adjacent sets of guide vanes (136).

7. The geothermal water dissolved gas separation device according to claim 5, characterized in that, The bottom edge of the guide vane (136) is serrated.

8. The geothermal water dissolved gas separation device according to claim 1, characterized in that, The elastic support (134) is covered with a flexible protective sleeve (137), and the two ends of the flexible protective sleeve (137) are fixedly connected to the positioning ring (131) and the sliding ring (132) respectively.

9. The geothermal water dissolved gas separation device according to claim 1, characterized in that, The water collection bend (8) and the water outlet pipe (9) are both located below the corresponding conical screen plate (133).

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