Geothermal water desanding equipment for geothermal utilization

Abstract

The invention relates to the technical field of water treatment in geothermal resource development, in particular to geothermal water desanding equipment for geothermal utilization, which comprises a pressure regulating mechanism, a multi-stage separation mechanism and a detection mechanism. Wherein the pressure regulating mechanism is used for regulating the pressure of geothermal water through a reducing pipeline and a pressure balancing assembly; the multi-stage separation mechanism is composed of a rotational flow cavity assembly, a filtering assembly and a precipitation assembly, and efficient solid-liquid separation is achieved; the detection mechanism comprises a detection module and an adjusting device and monitors and adjusts the operation state in real time. The effect of effectively removing sand grains in geothermal water is achieved, the water quality purity is remarkably improved, meanwhile, the equipment blockage risk is reduced, and the utilization rate of geothermal resources and the system stability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of geothermal water treatment in geothermal utilization, and in particular to a geothermal water desanding device for geothermal utilization. Background Art

[0002] As a clean and sustainable form of energy, geothermal resources have garnered widespread attention and development worldwide in recent years. As countries continue to pursue green and low-carbon goals, the efficient use of geothermal energy has become a crucial component in optimizing their energy mix. However, in the actual extraction of geothermal water, groundwater often carries large amounts of sediment and other impurities, which not only severely impacts water quality but also threatens the safety and stability of subsequent equipment. Therefore, effectively removing sediment from geothermal water and ensuring high operational efficiency and a long service life for the entire system have become critical challenges for the industry.

[0003] To address this challenge, the industry has explored a variety of sand removal strategies. The most common method involves natural sedimentation in sedimentation tanks, where gravity allows larger particles to gradually sink to the bottom of the tank, achieving initial separation. Additionally, filtration methods exist, such as using precision filters to intercept floating foreign matter.

[0004] Regarding the aforementioned technologies, existing conventional treatment methods still exhibit numerous shortcomings. Conventional methods are generally inefficient or complex to operate, particularly when dealing with high-flow geothermal water containing fine particles. When dealing with high-flow geothermal water mixed with fine particles, simple static sedimentation is incapable of fully removing the source of contamination. Consequently, a new, more integrated, and intelligent geothermal water desander is urgently needed to overcome these drawbacks and further enhance overall performance. Summary of the Invention

[0005] In order to solve the above problems, the present application provides a geothermal water desanding device for geothermal utilization.

[0006] This application provides a geothermal water desanding device for geothermal utilization, which adopts the following technical solution: A geothermal water sand removal device for geothermal utilization, including a water inlet pipe, comprising: a pressure regulating mechanism, the inlet end of the pressure regulating mechanism is connected to the feed pipe, and the pressure regulating mechanism is used to regulate the pressure of geothermal water; a multi-stage separation mechanism, the multi-stage separation mechanism is arranged behind the pressure regulating mechanism, and the inlet end of the multi-stage separation mechanism is connected to the pressure regulating mechanism; the multi-stage separation mechanism includes a swirl chamber assembly, a filtration assembly and a precipitation assembly; a detection mechanism, the detection mechanism is arranged on the multi-stage separation mechanism, and the detection mechanism includes a detection module.

[0007] By adopting the above technical solution, after the geothermal water enters the device, it first undergoes the action of the pressure regulating mechanism to achieve effective pressure regulation and smooth transition. This design significantly reduces the impact of the water hammer effect caused by pressure fluctuations on the pipeline system, ensuring the stability and service life of the entire system. Subsequently, in the multi-stage separation mechanism, the geothermal water successively undergoes the processes of swirl separation, filtration adsorption and precipitation treatment, realizing the efficient classification and removal of sand grains. Among them, the centrifugal force field formed by the cooperation of the tangential water inlet and the spiral guide plate can effectively discharge coarse sand and fine sand according to particle size, significantly improving the separation accuracy. At the same time, the design of the side suction pump cooperating with the anti-blocking screen not only prevents the blockage phenomenon caused by sediment accumulation, but also greatly extends the continuous operation time of the device and reduces the maintenance frequency. In the precipitation stage, with the help of the specially designed sedimentation tank structure, fine particles can be fully settled and removed regularly through the sewage pipe, ensuring the water quality of the effluent. In addition, the detection module in the detection mechanism provides accurate data support for the execution module through real-time monitoring of turbidity and pressure, enabling the water pump, side suction pump and switch valve to automatically adjust their working states according to the actual working conditions, so as to achieve the optimal energy consumption ratio and the best separation effect, and overall improve the automation level and economy of the system.

[0008] Preferably, the pressure regulating mechanism includes a tapered pipe, the wider end of the tapered pipe is connected to the water inlet pipe, the narrower end of the tapered pipe is connected with an equal-diameter pipe, and the end of the equal-diameter pipe away from the tapered pipe is provided with a tapered pipe.

[0009] By adopting the above technical solution, the combined design of the tapered pipe, the equal-diameter pipe and the tapered pipe can effectively regulate the pressure distribution of geothermal water. When the geothermal water flows through the tapered pipe, the flow rate increases, resulting in a pressure drop. After entering the equal-diameter pipe, the flow rate tends to be stable, and finally the pressure is gradually restored and smoothly transitioned through the tapered pipe. This design not only helps to eliminate the water hammer effect caused by sudden pressure changes, but also ensures that the subsequent separation process is carried out under a stable fluid state, significantly improving the operation reliability and processing capacity of the system.

[0010] Preferably, a pressure balance component is provided on the equal-diameter pipeline. The pressure balance component includes an annular chamber sleeved on the outer edge of the equal-diameter pipe, and further includes a plurality of diversion holes. The diversion holes are arranged pointing to the axis direction of the equal-diameter pipeline. The diversion holes communicate with the annular chamber and the equal-diameter pipeline, and an elastic screen is arranged in the diversion holes.

[0011] By adopting the above technical solution, the setting of the elastic screen can effectively prevent impurities from blocking the diversion holes. At the same time, the cooperation of the annular chamber and the diversion holes realizes the uniform distribution of the geothermal water pressure, thereby significantly improving the fluid stability in the pipeline and reducing the local impact phenomenon caused by pressure concentration. This design is particularly suitable for scenarios with large fluctuations in geothermal water pressure, and can extend the service life of the pipeline system while ensuring the normal operation of the equipment.

[0012] Preferably, the swirl chamber component includes a cylindrical barrel. A drain pipe is arranged at the top of the cylindrical barrel, and a water pump is arranged on the drain pipe. A conical barrel is arranged below the cylindrical barrel. A tangential water inlet is arranged on the cylindrical barrel, and the tangential water inlet communicates with the gradually expanding pipeline. A spiral guide plate is arranged on the inner wall of the conical barrel.

[0013] By adopting the above technical solution, the cooperation of the tangential water inlet and the spiral guide plate can effectively guide the geothermal water to form a stable rotating water flow, so that the sand grains gather and sink towards the conical barrel wall under the action of centrifugal force, thereby realizing the preliminary separation of solid and liquid. At the same time, the structural design helps to reduce energy loss, improve the continuity and stability of the separation process, and significantly reduce the risk of sand grains being discharged with the water flow.

[0014] Preferably, the spiral angle of the spiral guide plate is 45 to 60°, and the distance between adjacent guide plates gradually decreases from the top to the bottom of the conical barrel.

[0015] By adopting the above technical solution, the spiral lift angle of the spiral guide plate is set within the range of 45 to 60°, and the spacing between adjacent guide plates gradually decreases from the top to the bottom of the conical cylinder. This design can effectively guide the geothermal water to flow along a more stable rotational trajectory, generating a gradually increasing centrifugal force when the water flow enters the conical cylinder. Due to the precise optimization of the spiral lift angle, the intensity distribution of the eddy currents formed by the water flow in different height regions is more uniform and reasonable, thus significantly enhancing the ability to separate coarse sand and fine sand into layers. At the same time, the decreasing arrangement of the guide plate spacing with increasing depth further strengthens the action range and efficiency of the centrifugal field, helping to continuously push the denser particulate matter towards the edge and settle downward for aggregation, ultimately achieving an efficient and precise solid-liquid two-phase classification process. Compared with the traditional single-fixed parameter configuration method of the structure, this innovative improvement not only enhances the adaptability and flexibility of the overall system but also significantly improves the sand removal performance index in practical applications, ensuring that the equipment can maintain excellent performance under complex and variable working conditions.

[0016] Preferably, the filtering component includes a sediment port provided at the bottom of the conical barrel, a diversion pipe is provided on the sediment port, a collection pool is provided below the diversion pipe, a filtering screen is provided inside the diversion pipe, a sediment pipe is provided on one side of the diversion pipe, the sediment pipe is horizontally arranged above the filtering screen, a feeding pipe is communicated with the sediment pipe, the feeding pipe is vertically arranged, and a side suction pump is provided on the feeding pipe, and an anti-blocking screen is provided at the adsorption end of the side suction pump.

[0017] By adopting the above technical solution, the cooperation of the side suction pump and the anti-blocking screen can effectively prevent sediment from accumulating on the surface of the filtering screen, thereby maintaining the continuous smoothness of the filtering component. This design significantly reduces the number of equipment shutdowns for cleaning due to sediment blockage, improves the operating efficiency and stability of the system. At the same time, the unique structure of the anti-blocking screen helps to evenly distribute the water flow pressure, further reducing the risk of local blockage and ensuring the smooth progress of the geothermal water treatment process.

[0018] Preferably, the sedimentation component includes a sedimentation tank provided below the filtering component, a sewage discharge pipe is provided at the bottom end of the sedimentation tank, and a switching valve is provided on the sewage discharge pipe.

[0019] By adopting the above technical solution, the sedimentation tank can effectively collect the remaining particulate matter after multi-stage separation. With the setting of the sewage discharge pipe and the switching valve, the function of discharging the sedimented substances regularly and quantitatively is realized. This design not only simplifies the operation process but also significantly reduces the workload of manual cleaning. At the same time, it avoids the problem of secondary pollution caused by long-term accumulation, thus ensuring the continuous and stable operation of the entire system.

[0020] Preferably, the detection module is arranged inside the sedimentation tank.

[0021] By adopting the above technical solution, the real-time monitoring of the internal state of the sedimentation tank during the sand removal process of geothermal water is realized. The specific effects are as follows: The detection module is arranged in the sedimentation tank, enabling the turbidity sensor to accurately sense the water quality condition at a certain depth below the liquid level, ensuring the effective control of the effluent turbidity; at the same time, the pressure sensor is embedded in the bottom side wall of the sedimentation tank for accurately monitoring the change of the siltation amount. This layout improves the accuracy of sensor data acquisition, provides a reliable basis for subsequent intelligent adjustment, and thus enhances the automation level and operation stability of the entire system.

[0022] Preferably, the detection module includes a turbidity sensor and a pressure sensor. The turbidity sensor is arranged at least 20 cm below the liquid level of the sedimentation tank, and the pressure sensor is embedded in the bottom of the side wall of the sedimentation tank.

[0023] By adopting the above technical solution, the collaborative cooperation of the turbidity sensor and the pressure sensor can accurately obtain the water quality state and siltation degree in the sedimentation tank, thereby providing reliable data support for the automatic control system. This arrangement not only improves the accuracy of signal acquisition but also effectively extends the service life of the sensor, enabling the device to maintain stable monitoring performance under complex working conditions and significantly enhancing the operation reliability of the entire system.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The pressure regulating mechanism adopts a design method combining a tapered pipe, an equal-diameter pipe, and a tapered pipe, which can reasonably regulate the pressure state of geothermal water, effectively suppress the pressure fluctuation range, and thus significantly improve the water hammer phenomenon that may be caused by unstable pressure, enhancing the operation safety and reliability of the system; 2. The swirl chamber assembly in the multi-stage separation mechanism realizes the effective classification and separation of coarse sand and fine sand under the action of centrifugal force by means of spiral guide plates arranged with a specific lift angle and decreasing pitch, improving the overall sand removal efficiency; 3. The detection mechanism, through the collaborative work of the turbidity sensor and the pressure sensor, obtains information on the water quality condition and siltation degree in real time, and the control system commands the water pump, side suction pump, and switch valve to cooperate with each other to dynamically adjust the water flow rate and sand discharge rhythm, enhancing the automation level of the equipment, reducing the need for manual operation, and optimizing the economy and maintenance convenience of long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an embodiment of the present application; Figure 2 is a schematic cross-sectional view of the pressure regulating mechanism of an embodiment of the present application; Figure 3 is a schematic cross-sectional view of a part of the structure of an embodiment of the present application.

[0026] Explanation of the reference numerals: 1. water inlet pipe; 2. pressure regulating mechanism; 21. gradually converging pipe; 22. pipe of equal diameter; 23. gradually expanding pipe; 24. pressure balancing assembly; 241. annular chamber; 242. diversion hole; 243. elastic screen; 3. multi-stage separation mechanism; 31. swirl chamber assembly; 311. cylindrical cylinder; 312. drain pipe; 313. water pump; 314. conical cylinder; 315. spiral guide plate; 32. filter assembly; 321. sediment outlet; 322. diversion pipe; 323. collection tank; 324. filter screen; 325. sediment pipe; 326. discharge pipe; 327. side suction pump; 328. anti-clogging screen; 33. sedimentation assembly; 331. sedimentation tank; 332. sewage pipe; 333. switch valve; 4. detection module; 41. turbidity sensor; 42. pressure sensor. DETAILED DESCRIPTION

[0027] The following is combined with Figures 1 - 3 This application is described in further detail.

[0028] The present application discloses a geothermal water desanding device for geothermal utilization. Figure 1 A geothermal water desanding device for geothermal utilization includes a water inlet pipe 1, including: a pressure regulating mechanism 2, the inlet end of the pressure regulating mechanism 2 is connected to the feed pipe, and the pressure regulating mechanism 2 is used to regulate the pressure of geothermal water; a multi-stage separation mechanism 3, the multi-stage separation mechanism 3 is arranged behind the pressure regulating mechanism 2, and the inlet end of the multi-stage separation mechanism 3 is connected to the pressure regulating mechanism 2; the multi-stage separation mechanism 3 includes a cyclone chamber component 31, a filtering component 32 and a sedimentation component 33; a detection mechanism, the detection mechanism is arranged on the multi-stage separation mechanism 3, and the detection mechanism includes a detection module 4.

[0029] Specifically, during operation, the external geothermal water is sent to the pressure regulating mechanism 2 through the water inlet pipe 1. The pressure regulating mechanism realizes effective pressure regulation and smooth transition through its special mechanism, significantly reducing the impact of the water hammer effect caused by pressure fluctuations on the pipeline system, and then sends the geothermal water into the multi-stage separation mechanism 3. The multi-stage separation mechanism 3 removes sand from the geothermal water once through the cyclone chamber component 31, and then uses the filter component 32 to remove sand from the geothermal water for a second time, and finally removes sand for a third time through the sedimentation component 33. In addition, the detection module 4 in the detection mechanism monitors the sand removal effect in real time through real-time monitoring of turbidity and pressure. The multi-stage sand removal mechanism ensures the sand removal effect, especially for geothermal water with high flow and fine particles, it can solve the problem that traditional separation mechanisms cannot remove small particles, thereby improving the automation level and economy of the system as a whole.

[0030] refer to Figures 1 - 3, specifically, the pressure regulating mechanism 2 includes a tapered pipe 21. The wider end of the tapered pipe 21 is connected to the water inlet pipe 1, and the narrower end of the tapered pipe 21 is connected to an equal-diameter pipe 22. The end of the equal-diameter pipe 22 away from the tapered pipe 21 is provided with a tapered expansion pipe 23.

[0031] During specific operation, the tapered pipe 21 is connected to the external water inlet pipe 1. As an unillustrated embodiment, it can be connected by a flange and a sealing ring or other mechanisms. The power mechanism includes three parts: the tapered pipe 21, the equal-diameter pipe 22, and the tapered expansion pipe 23, which are connected in sequence to form a complete fluid passage. The wider end of the tapered pipe 21 is connected to the water inlet pipe, and the other end is connected to the equal-diameter pipe 22, and then leads to the tapered expansion pipe 23 through the equal-diameter pipe 22. When the geothermal water flows into the tapered pipe 21, due to the gradually decreasing flow area, the water flow speed increases, thereby realizing the primary pressurization of the geothermal water; then it enters the equal-diameter pipe 22 and is transmitted at a uniform speed; finally, it reaches the tapered expansion pipe 23, and the flow speed slows down due to the increasing cross-section, so that the pressure is gradually released, avoiding the damage caused by violent impact. Finally, it enters the multi-stage separation mechanism 3, and finally the pressure is gradually restored and smoothly transitioned through the tapered expansion pipe 23. This design not only helps to eliminate the water hammer effect caused by sudden pressure changes, but also ensures that the subsequent separation process is carried out under a stable fluid state, significantly improving the operation reliability and processing capacity of the system.

[0032] Reference Figures 1 - 3 , specifically, a pressure balance component 24 is provided on the equal-diameter pipe 22. The pressure balance component 24 includes an annular chamber 241 sleeved on the outer edge of the equal-diameter pipe, and also includes a plurality of diversion holes 242. The diversion holes 242 are arranged pointing to the axis direction of the equal-diameter pipe 22. The diversion holes 242 communicate with the annular chamber 241 and the equal-diameter pipe 22, and an elastic screen 243 is arranged in the diversion holes 242.

[0033] During specific operation, the diameter of the elastic screen 243 in the diversion hole 242 is usually designed to be 0.5 mm - 2 mm, and its cross-sectional area only accounts for 0.1% - 0.5% of the cross-sectional area of the equal-diameter pipe flow channel. The surface tension effect generated by such a tiny aperture can prevent water from flowing through freely. When the water pressure in the equal-diameter pipe instantaneously increases, the high-pressure water enters the annular chamber 241 through the diversion hole 242, pushing the elastic screen 243 to produce a slight elastic deformation. The deformation of the screen causes the pores to expand, allowing a small amount of water to pass through briefly. After that, the pressure in the annular chamber 241 reaches equilibrium with the pressure in the flow channel. After a period of pressure equilibrium, the screen elastically resets to close the pores again, regulating the pressure in the pipe. As an embodiment, a polytetrafluoroethylene elastic screen 243 is arranged in the diversion hole 242, and its cross-sectional area only accounts for 0.5% - 3% of the cross-sectional area of the pipeline flow channel, using the surface tension of the micropores to close the water flow under normal conditions; when the pipeline pressure suddenly increases, the high-pressure water flow forces the screen to undergo elastic deformation, and the pores of the screen expand, allowing the water flow to enter the annular chamber 241 to buffer the pressure and inhibit the water hammer effect; after the pressure equilibrium, the inner screen elastically resets to close the pores; when the pressure is low, the water stored in the chamber flows back in the reverse direction to supplement the pressure. At the same time, the water flow scouring and deformation vibration achieve self-cleaning. The screen prevents sediment from flowing into the annular chamber 241, significantly improving the fluid stability in the pipeline and reducing the local impact phenomenon caused by pressure concentration. This design is particularly suitable for scenarios where the geothermal water pressure fluctuates greatly, and can extend the service life of the pipeline system while ensuring the normal operation of the equipment.

[0034] Reference Figures 1 - 3 Specifically, the swirl chamber assembly 31 includes a cylindrical barrel 311. A drain pipe 312 is arranged at the top end of the cylindrical barrel 311, a water pump 313 is arranged on the drain pipe 312, a conical barrel 314 is arranged below the cylindrical barrel 311, a tangential water inlet is arranged on the cylindrical barrel 311, and the tangential water inlet communicates with the gradually expanding pipe 23. A spiral guide plate 315 is arranged on the inner wall of the conical barrel 314.

[0035] During specific operation, the swirl chamber assembly 31 introduces geothermal water into the cylindrical barrel 311 through the tangential water inlet to form a high-speed rotating water flow. Under the action of centrifugal force, the sand grains are thrown towards the barrel wall and slide down along the spiral guide plate 315 to the bottom conical barrel 314, while the clean water is discharged through the drain pipe 312 at the top. The spiral guide plate 315 adopts a design with a gradually decreasing pitch to enhance the sand grain classification and sedimentation effect. At the same time, the structure of the conical barrel 314 accelerates the aggregation of sand grains, and the sediment outlet 321 at the bottom cooperates with the guide pipe 322 to achieve continuous sand discharge, finally completing efficient solid-liquid separation. The cooperation between the tangential water inlet and the spiral guide plate 315 can effectively guide the geothermal water to form a stable rotating water flow, enabling the sand grains to gather and sink towards the wall of the conical barrel 314 under the action of centrifugal force, thereby realizing the preliminary solid-liquid separation.

[0036] Reference Figure 3, specifically, the spiral guide plate 315 has a spiral lift angle of 45 to 60° and the distance between adjacent guide plates gradually decreases from the top to the bottom of the conical cylinder 314.

[0037] During specific operation, the spiral lift angle of the spiral guide plate 315 is set within the range of 45 to 60°, and the distance between adjacent guide plates gradually decreases from the top to the bottom of the conical cylinder 314. This design can effectively guide the geothermal water to flow along a more stable rotational trajectory, generating a gradually increasing centrifugal force when the water flow enters the conical cylinder 314. Due to the precise optimization of the spiral lift angle, the intensity distribution of the eddy currents formed by the water flow in different height regions is more uniform and reasonable, thus significantly enhancing the ability to separate coarse sand and fine sand into layers. At the same time, the decreasing arrangement of the guide plate spacing with increasing depth further strengthens the action range and efficiency of the centrifugal field, helping to continuously push the denser particulate matter towards the edge and settle downward for aggregation, ultimately achieving an efficient and precise solid-liquid two-phase classification process. Compared with the traditional structure with a single fixed parameter configuration method, this innovative improvement not only enhances the adaptability and flexibility of the overall system but also significantly improves the sand removal performance index in practical applications, ensuring that the equipment can maintain excellent performance under complex and variable working conditions.

[0038] Reference Figure 3 , specifically, the filtering component 32 includes a sediment port 321 provided at the bottom of the conical barrel, a diversion pipe 322 is provided on the sediment port 321, a collection pool 323 is provided below the diversion pipe 322, a filter screen 324 is provided inside the diversion pipe 322, a sediment pipe 325 is provided on one side of the diversion pipe 322, the sediment pipe 325 is horizontally arranged above the filter screen 324, a blanking pipe 326 is communicated with the sediment pipe 325, the blanking pipe 326 is vertically arranged, and a side suction pump 327 is provided on the blanking pipe 326, and an anti-blocking screen 328 is provided at the adsorption end of the side suction pump 327.

[0039] During specific operation, the water flow flows into the collection pool 323 from inside the diversion pipe 322, the muddy water is intercepted by the filter screen 324, and then is sucked into the blanking pipe 326 by the side suction pump 327, and further falls into the precipitation component 33 due to the action of gravity, completing the second sand removal. The cooperation of the side suction pump 327 and the anti-blocking screen 328 can effectively prevent sediment from accumulating on the surface of the filter screen 324, thus maintaining the continuous smoothness of the filtering component 32.

[0040] Reference Figure 3 , specifically, the precipitation component 33 includes a sedimentation tank 331 provided below the filtering component 32, a sewage discharge pipe 332 is provided at the bottom end of the sedimentation tank 331, and a switching valve 333 is provided on the sewage discharge pipe 332.

[0041] During specific operation, through static treatment of sediment-laden water, the third separation is finally achieved. When there is a large amount of mud, the switch valve 333 is opened to discharge the mud. The sedimentation tank 331 can effectively collect the remaining particulate matters after multi-stage separation. With the arrangement of the sewage discharge pipe 332 and the switch valve 333, the function of discharging the sedimentation substances regularly and quantitatively is realized. This design not only simplifies the operation process, but also significantly reduces the workload of manual cleaning, and at the same time avoids the problem of secondary pollution caused by long-term accumulation, thus ensuring the continuous and stable operation of the entire system.

[0042] Reference Figure 3 , specifically, the detection module 4 is arranged in the sedimentation tank 331.

[0043] During specific operation: The detection module 4 is arranged in the sedimentation tank 331, so that the turbidity sensor 41 can accurately sense the water quality condition at a certain depth below the liquid level, ensuring effective control of the effluent turbidity; at the same time, the pressure sensor 42 is embedded in the bottom side wall of the sedimentation tank 331 for accurately monitoring the change of the siltation amount. This layout method improves the accuracy of sensor data collection.

[0044] Specifically, the detection module 4 includes a turbidity sensor 41 and a pressure sensor 42. The turbidity sensor 41 is arranged at least 20 cm below the liquid level of the sedimentation tank 331, and the pressure sensor 42 is embedded in the bottom of the side wall of the sedimentation tank 331.

[0045] By adopting the above technical solution, the collaborative cooperation of the turbidity sensor 41 and the pressure sensor 42 can accurately obtain the water quality state and siltation degree in the sedimentation tank 331, thus providing reliable data support for the automatic control system. This arrangement method not only improves the accuracy of signal collection, but also effectively extends the service life of the sensor, enables the device to maintain stable monitoring performance under complex working conditions, and significantly improves the operation reliability of the entire system.

[0046] The implementation principle of a geothermal water sand removal device for geothermal utilization in an embodiment of this application is as follows: This geothermal sand removal device achieves efficient solid-liquid separation through a three-stage collaborative mechanism. First, the power mechanism uses a combination of a converging-equal-diameter-diverging pipe 23 to adjust the flow rate and pressure of geothermal water, and the elastic screen 24 and the pressure balance component 24 dynamically absorb pressure fluctuations. After the water flow stabilizes, the multi-stage separation mechanism 3 sequentially performs cyclone centrifugation, grading filtration, and gravity sedimentation. The cyclone chamber component 31 forms a high-speed centrifugal field through tangential water inlet. Under the guidance of the spiral guide plate 315, sand grains settle along the cylinder wall to the bottom of the conical cylinder 314, and a large amount of coarse sand is separated here. The inclined filtration component 32 uses an anti-clogging screen to intercept residual particles, and the side suction pump 327 continuously discharges sand at a certain rate. The sedimentation tank 331 separates the remaining fine sand through long-term static settlement. The bottom pressure sensor 42 and the turbidity sensor 41 monitor the sludge thickness and the turbidity of the effluent in real time. Further, the power of the water pump 313, the start and stop of the side suction pump 327, and the opening degree of the sewage discharge valve are dynamically controlled according to the monitoring data, and finally purified geothermal water is output.

[0047] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A geothermal water sand removal device for geothermal utilization, including a water inlet pipe (1), characterized in that, Comprising: A pressure regulating mechanism (2), the inlet end of the pressure regulating mechanism (2) is connected to the feed pipeline, and the pressure regulating mechanism (2) is used to regulate the pressure of geothermal water; A multi-stage separation mechanism (3), the multi-stage separation mechanism (3) is arranged behind the pressure regulating mechanism (2), and the inlet end of the multi-stage separation mechanism (3) is connected to the pressure regulating mechanism (2); The multi-stage separation mechanism (3) includes a cyclone chamber assembly (31), a filtration assembly (32) and a precipitation assembly (33); A detection mechanism, the detection mechanism is arranged on the multi-stage separation mechanism (3), and the intelligent adjustment mechanism includes a detection module (4).

2. The geothermal water sand removal device for geothermal utilization according to claim 1, characterized in that: The pressure regulating mechanism (2) includes a tapered pipeline (21), the wide end of the tapered pipeline (21) is connected to the water inlet pipeline (1), the narrow end of the tapered pipeline (21) is connected with an equal-diameter pipeline (22), and the end of the equal-diameter pipeline (22) far away from the tapered pipeline (21) is provided with a tapered expansion pipeline (23).

3. The geothermal water sand removal device for geothermal utilization according to claim 2, wherein: A pressure balance assembly (24) is arranged on the equal-diameter pipeline (22), the pressure balance assembly (24) includes an annular chamber (241) sleeved on the outer edge of the equal-diameter pipe, and also includes a plurality of diversion holes (242), the diversion holes (242) are arranged pointing to the axis direction of the equal-diameter pipeline (22), the diversion holes (242) communicate with the annular chamber (241) and the equal-diameter pipeline (22), and an elastic screen (243) is arranged in the diversion holes (242).

4. The geothermal water sand removal device for geothermal utilization according to claim 3, characterized in that: The cyclone chamber assembly (31) includes a cylindrical barrel (311), a drain pipe (312) is arranged at the top of the cylindrical barrel (311), a water pump (313) is arranged on the drain pipe (312), a conical barrel (314) is arranged below the cylindrical barrel (311), a tangential water inlet is arranged on the cylindrical barrel (311), the tangential water inlet communicates with the tapered expansion pipeline (23), and spiral guide plates (315) are arranged on the inner walls of the cylindrical barrel (311) and the conical barrel (314).

5. The geothermal water sand removal device for geothermal utilization according to claim 4, characterized in that: The spiral angle of the spiral guide plate (315) is 45 to 60° and the distance between adjacent guide plates gradually decreases from the top to the bottom of the conical barrel (314).

6. The geothermal water sand removal device for geothermal utilization according to claim 5, wherein: The filtration assembly (32) includes a sediment port (321) arranged at the bottom of the conical barrel, a diversion pipe (322) is arranged on the sediment port (321), a collection pool (323) is arranged below the diversion pipe (322), a filter screen (324) is arranged in the diversion pipe (322), a sediment pipe (325) is arranged on one side of the diversion pipe (322), the sediment pipe (325) is horizontally arranged above the filter screen (324), a feeding pipe (326) is communicated with the sediment pipe (325), the feeding pipe (326) is vertically arranged, and a side suction pump (327) is arranged on the feeding pipe (326), and an anti-blocking screen (328) is arranged at the adsorption end of the side suction pump (327).

7. The geothermal water sand removal device for geothermal utilization according to claim 6, characterized in that: The precipitation component (33) includes a sedimentation tank (331) disposed below the filtration component (32). A sewage discharge pipe (332) is provided at the bottom end of the sedimentation tank (331), and a switching valve (333) is provided on the sewage discharge pipe (332).

8. A geothermal water sand removal device for geothermal utilization according to claim 7, characterized in that: The detection module (4) is disposed in the sedimentation tank (331).

9. The geothermal water sand removal device for geothermal utilization according to claim 8, characterized in that: The detection module (4) includes a turbidity sensor (41) and a pressure sensor (42). The turbidity sensor (41) is disposed at least 20 cm below the liquid level of the sedimentation tank (331), and the pressure sensor (42) is embedded at the bottom of the side wall of the sedimentation tank (331).

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