Geothermal water pumping and sampling device

Abstract

The utility model relates to a terrestrial heat water pumping sampling device, and relates to the technical field of water pumping sampling, the terrestrial heat water pumping sampling device comprises a sampling cylinder and a lifting mechanism, the lifting mechanism is connected with the sampling cylinder, the sampling cylinder comprises a cylinder body and a top cover, the top cover is installed at the top of the cylinder body, a water inlet groove is formed in the bottom of the cylinder body, a plugging piece is arranged in the water inlet groove, and a sealing plate is installed in the cylinder body; a plurality of springs are arranged between the sealing plate and the top cover, a connecting column is arranged on one side of the sealing plate, a supporting column is arranged on the other side of the sealing plate, the other end of the supporting column is connected with a plugging piece, the other end of the connecting column penetrates through and extends out of the top cover, the top of the connecting column is connected with a traction rope, and the top cover is connected with a lifting mechanism. The geothermal well sampling device has the advantages that the sampling barrel can be rapidly placed in and taken out of a geothermal well, operation is relatively simple, sampling work can be completed within a short time, sampling efficiency is improved, large-scale pipeline laying engineering is not needed, input of manpower and material resources is reduced, and sampling cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of water pumping and sampling, and in particular to a geothermal water pumping and sampling device. Background Technology

[0002] In today's society, with the deepening exploration and utilization of clean energy, geothermal energy, as a green and sustainable energy source, has attracted much attention in its development and research. In the process of developing and utilizing geothermal resources, geothermal water sampling is a crucial step in obtaining relevant data on geothermal fluids and assessing the quality and reserves of geothermal resources.

[0003] Currently, in most cases, water samples are drawn directly from geothermal wells using water pipes. However, since geothermal wells are usually quite deep, if sampling is carried out by laying pipes in the early stages, the amount of work involved in laying the pipes is enormous, requiring a lot of manpower and resources, which leads to a significant increase in sampling costs.

[0004] Regarding the aforementioned technologies, the inventors believe that the use of water pipes to directly extract water samples from geothermal wells results in a huge amount of engineering work for laying pipelines and a significant increase in sampling costs. Utility Model Content

[0005] To address the issue of the enormous engineering workload and significantly increased sampling costs associated with directly pumping water samples from geothermal wells using water pipes, this application provides a geothermal water pumping and sampling device.

[0006] This application provides a geothermal water pumping and sampling device, which adopts the following technical solution:

[0007] A geothermal water pumping and sampling device includes a sampling cylinder and a lifting mechanism. The lifting mechanism is connected to the sampling cylinder. The sampling cylinder includes a cylinder body and a top cover. The top cover is installed on the top of the cylinder body. A water inlet groove is opened at the bottom of the cylinder body. A sealing component is provided in the water inlet groove. A sealing plate is installed inside the cylinder body. Multiple springs are provided between the sealing plate and the top cover. A connecting column is installed on one side of the sealing plate and a support column is installed on the other side. The other end of the support column is connected to the sealing component. The other end of the connecting column passes through and extends out of the top cover. A traction rope is connected to the top of the connecting column. The top cover is connected to the lifting mechanism.

[0008] By adopting the above technical solution, the sampling cylinder is placed in a suitable position in the geothermal well through a lifting mechanism. The cylinder body serves as the main body for containing the fluid, and the top cover seals the cylinder body to prevent fluid overflow. The water inlet tank is the channel for geothermal fluid to enter the sampling cylinder. A spring connects the sealing plate and the top cover. By pulling the connecting column with a traction rope, the sealing plate compresses the spring and drives the support column, thereby controlling the opening or closing of the water inlet tank of the sealing component, realizing the sampling control of geothermal fluid, and enabling precise sampling operations in geothermal wells at different depths.

[0009] Optionally, the bottom of the sealing element is configured as an inverted cone shape.

[0010] By adopting the above technical solution, the bottom of the inverted cone-shaped sealing component can guide the geothermal fluid to flow more smoothly into the inlet tank during sampling, thereby improving sampling efficiency. When closed, the inverted cone-shaped structure fits more tightly against the inner wall of the inlet tank, enhancing the sealing effect, preventing geothermal fluid leakage, ensuring the purity and quality of the collected samples, and also preventing impurities from accumulating around the sealing component and affecting its normal operation.

[0011] Optionally, a limiting groove is provided inside the cylinder, the sealing plate is installed in the limiting groove, and the height of the inverted cone is greater than the height of the limiting groove.

[0012] By adopting the above technical solution, the limiting groove limits the movement range of the sealing plate, ensuring its stable movement trajectory. The height of the inverted cone is greater than the height of the limiting groove, ensuring that the sealing component can be fully inserted into the water inlet to achieve a good seal. At the same time, it has sufficient stroke during opening and closing, further improving the sealing performance and operational stability of the sampling device.

[0013] Optionally, the cylinder and the top cover are connected by threads.

[0014] By adopting the above technical solution, the threaded connection facilitates the disassembly and assembly of the cylinder and the top cover, and makes it easy to clean, maintain and replace the internal parts of the sampling cylinder. The threaded connection can provide a reliable seal to prevent geothermal fluid from leaking from the connection, ensuring the safety of the sampling process and the integrity of the sample.

[0015] Optionally, the lifting mechanism includes a support frame, on which a rotating shaft and a power source are mounted. The power source drives and connects to the rotating shaft, and a traction rope is wound around the rotating shaft and connected to the top cover.

[0016] By adopting the above technical solution, the lifting mechanism provides power for the lowering and lifting of the sampling tube. The power source drives the rotating shaft to rotate, thereby realizing the raising and lowering of the traction rope and accurately controlling the position of the sampling tube in the geothermal well. The bracket provides stable support for the entire lifting mechanism, ensuring the smooth raising and lowering of the sampling tube during operation, and improving sampling efficiency and safety.

[0017] Optionally, the top cover is provided with a pull ring and a lifting ring, the traction rope is connected to the lifting ring, and the pulling rope is connected to the pull ring.

[0018] By adopting the above technical solution, the pull ring and lifting ring provide clear connection points for the pulling rope and traction rope, respectively, making the operation more orderly. The lifting ring ensures that the sampling tube is subjected to uniform force and rises stably during the lifting process. The pull ring allows operators to accurately control the action of the sealing component through the pulling rope, improving the accuracy and convenience of the sampling operation.

[0019] Optionally, a one-way exhaust valve is provided on the side wall of the cylinder.

[0020] By adopting the above technical solution, the one-way exhaust valve can discharge the air in the sampling tube during sampling, allowing the geothermal fluid to flow in smoothly. At the same time, it balances the pressure inside and outside the sampling tube during the sampling process, preventing damage to the sampling tube due to pressure difference, and preventing the backflow of external fluid, thus ensuring the purity of the collected sample.

[0021] Optionally, the materials of the cylinder, the top cover, and the sealing plate are all heat-insulating materials.

[0022] By adopting the above technical solutions, the thermal insulation material can effectively reduce the heat loss of geothermal fluid during the sampling process, maintain the sample temperature stability, ensure the accuracy of subsequent measurement and analysis of geothermal fluid temperature-related parameters, and at the same time prevent the surface temperature of the sampling tube from becoming too high, protecting the safety of operators and surrounding equipment from heat damage.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This device uses a lifting mechanism to place the sampling tube into a suitable position in the geothermal well. The water inlet trough at the bottom of the tube is the channel for geothermal fluid to enter the sampling tube. The sealing component controls the opening and closing of the water inlet trough. When sampling is required, the connecting column is pulled by the traction rope. The connecting column drives the sealing plate to compress the spring. The sealing plate transmits the force to the sealing component through the support column, causing the sealing component to be pulled out of the water inlet trough. The water inlet trough opens, and geothermal fluid can flow into the sampling tube. After sampling is completed, the traction rope is released, the spring returns to its original state, and the sealing plate and sealing component are reset, closing the water inlet trough and preventing the sample from flowing out. Through the coordinated work of the spring, connecting column, support column, and sealing component, precise control of the water inlet process is achieved. After sampling is completed, the sampling tube is lifted to the ground using the lifting mechanism. Compared with the traditional method of water pumping and sampling by laying pipelines, there is no need for large-scale pipeline laying projects, which reduces the input of manpower and material resources, lowers the sampling cost, and allows the sampling tube to be quickly placed into and removed from the geothermal well. The operation is relatively simple and can complete the sampling work in a short time, improving the sampling efficiency.

[0025] 2. When the sealing component closes the inlet tank, the inverted conical shape of the sealing component allows it to fit better against the inner wall of the inlet tank, effectively preventing geothermal fluid from leaking out through the gap between the inlet tank and the sealing component, thus enhancing the sealing performance. When the sealing component is opened, the inverted conical bottom guides the geothermal fluid to smoothly enter the inlet tank, making it flow into the inlet tank more concentratedly and reducing turbulence and dispersion of the fluid near the inlet. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the geothermal water pumping and sampling device according to an embodiment of this application;

[0027] Figure 2 This is a cross-sectional view of the sampling cylinder in the geothermal water pumping sampling device of this application embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Sampling cylinder; 11. Cylinder body; 111. Water inlet trough; 112. Limiting groove; 113. One-way exhaust valve; 12. Top cover; 121. Pull ring; 122. Lifting ring; 13. Sealing component; 14. Sealing plate; 15. Spring; 16. Connecting column; 17. Support column; 18. Counterweight; 2. Lifting mechanism; 21. Bracket; 22. Rotating shaft; 23. Power source; 24. Traction rope; 25. Take-up roller; 3. Pull rope. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The following is in conjunction with the appendix Figure 1 and Figure 2 This application will be described in further detail.

[0034] This application discloses a geothermal water pumping and sampling device, referring to... Figure 1 and Figure 2 The geothermal water pumping sampling device includes a sampling cylinder 1 and a lifting mechanism 2. The lifting mechanism 2 is connected to the sampling cylinder 1. The sampling cylinder 1 includes a cylinder body 11 and a top cover 12. The top cover 12 is installed on the top of the cylinder body 11. A water inlet groove 111 is opened at the bottom of the cylinder body 11. A sealing component 13 is provided in the water inlet groove 111. A sealing plate 14 is installed inside the cylinder body 11. Multiple springs 15 are provided between the sealing plate 14 and the top cover 12. A connecting column 16 is installed on one side of the sealing plate 14, and a support column 17 is installed on the other side. The other end of the support column 17 is connected to the sealing component 13. The other end of the connecting column 16 passes through and extends out of the top cover 12. A traction rope 3 is connected to the top of the connecting column 16. The top cover 12 is connected to the lifting mechanism 2.

[0035] In this geothermal water pumping sampling device, the cylinder 11 of the sampling tube 1 serves as the main container for holding geothermal fluid samples, providing space for sampling. Simultaneously, the water inlet trough 111 at its bottom is the channel for the geothermal fluid to enter the sampling tube 1, ensuring that a sufficient amount of geothermal fluid sample can be collected to meet the needs of subsequent analysis and testing. The top cover 12 seals the cylinder 11, preventing geothermal fluid from overflowing during sampling. It also provides mounting support points for other components (such as the spring 15, connecting column 16, etc.), ensuring the sealing of the sampling process, preventing sample contamination from external sources, and improving sampling accuracy.

[0036] The sealing element 13 is used to control the opening and closing of the inlet tank 111. When sampling is required, the sealing element 13 opens to allow geothermal fluid to enter the cylinder 11. After sampling is completed, the sealing element 13 closes to prevent sample leakage, thereby achieving effective control of the sampling process and ensuring that samples are collected only at appropriate times to avoid sample mixing or contamination. The sealing plate 14 is installed inside the cylinder 11, and a spring 15 is provided between it and the top cover 12. The position is moved by the extension and contraction of the spring 15. At the same time, the sealing plate 14 is connected to the connecting column 16 and the support column 17, transmitting the tension of the pulling rope 3 to the sealing element 13 to control the action of the sealing element 13. The sealing plate 14 can also ensure a certain sealing performance to prevent fluid from entering or flowing out when not sampling.

[0037] Spring 15 provides elastic force. When the traction rope 3 pulls the connecting post 16, spring 15 is compressed; when the traction rope 3 is released, spring 15 returns to its original state, causing the sealing plate 14 and the sealing element 13 to reset. This provides a certain buffering and reset function to the opening and closing action of the sealing element 13, extending the service life of the components and ensuring the reliability of the sealing. The connecting post 16 can transmit the tension of the traction rope 3 to the sealing plate 14, thereby controlling the action of the sealing element 13. This allows operators to remotely control the opening and closing of the sealing element 13 from the ground via the traction rope 3, facilitating sampling operations.

[0038] The support column 17 transmits the movement of the sealing plate 14 to the sealing member 13, so that the sealing member 13 can open or close the water inlet tank 111 as the sealing plate 14 moves, ensuring the linkage between the sealing member 13 and the sealing plate 14, and ensuring that the sealing member 13 can accurately perform the opening and closing action.

[0039] The traction rope 3 is operated by the operator on the ground. By pulling the traction rope 3, the movement of the connecting column 16 and the sealing plate 14 is controlled, thereby controlling the opening and closing of the sealing component 13. This allows the operator to remotely control the sampling process, improving the convenience and safety of sampling. The lifting mechanism 2 is responsible for placing the sampling cylinder 1 into the geothermal well for sampling and lifting the sampling cylinder 1 back to the ground after sampling. This enables the placement and retrieval of the sampling cylinder 1 in the geothermal well, ensuring a smooth sampling process and avoiding the safety risks associated with manual sampling in the well.

[0040] This geothermal pumping and sampling device is used to collect geothermal fluid samples from geothermal wells. The sampling cylinder 1 is lowered into the appropriate position in the geothermal well via the lifting mechanism 2. The operator then uses the pulling rope 3 to control the sealing component 13 to open the inlet tank 111, allowing geothermal fluid to enter the sampling cylinder 1. After sampling, the pulling rope 3 is operated again to close the sealing component 13, and then the lifting mechanism 2 is used to lift the sampling cylinder 1 to the ground. Compared to traditional pipeline-based pumping and sampling methods, this method eliminates the need for large-scale pipeline laying, reducing manpower and material resources, lowering sampling costs, and allowing for rapid placement and removal of the sampling cylinder 1 from the geothermal well. The operation is relatively simple, enabling sampling to be completed in a short time and improving sampling efficiency. Furthermore, the sealing design of the sampling cylinder 1 and the precise control of the sealing component 13 effectively prevent sample leakage and contamination, ensuring the quality of the collected geothermal fluid samples and providing accurate data support for subsequent geothermal energy assessment and research.

[0041] The lifting mechanism 2 includes a bracket 21, on which a rotating shaft 22 and a power source 23 are mounted. The power source 23 drives and connects to the rotating shaft 22. A take-up roller 25 is sleeved on the rotating shaft 22, and a traction rope 24 is wound on the take-up roller 25. The traction rope 24 is connected to the top cover 12. The bracket 21 serves as the mounting base for other components of the lifting mechanism 2, providing a support and fixing structure for the rotating shaft 22 and the power source 23, ensuring that the entire lifting mechanism 2 remains stable during operation and preventing the lifting and lowering operation of the sampling tube 1 from being affected by component shaking or displacement.

[0042] The rotating shaft 22, acting as a rotating component, drives the take-up roller 25 to rotate. The take-up roller 25, acting as the winding component for the traction rope 24, rotates under the drive of the power source 23. When the rotating shaft 22 rotates in the forward direction, the traction rope 24 gradually winds around the rotating shaft 22, thereby lifting the sampling cylinder 1 upward. When the rotating shaft 22 rotates in the reverse direction, the traction rope 24 gradually unwinds, and the sampling cylinder 1 is lowered into the geothermal well. The rotation of the rotating shaft 22 controls the length of the traction rope 24, thereby precisely controlling the position of the sampling cylinder 1 in the geothermal well to meet the sampling requirements at different depths.

[0043] The power source 23 provides power for the rotation of the shaft 22. It can be a motor, engine or other power equipment that converts electrical energy, chemical energy of fuel, etc. into mechanical energy to drive the shaft 22 to rotate. This realizes the automated operation of the lifting mechanism 2, avoids the tediousness and instability of manual operation, improves lifting efficiency and accuracy, and also reduces the labor intensity of the operators.

[0044] The traction rope 24 connects the rotating shaft 22 and the top cover 12 of the sampling cylinder 1, converting the rotational motion of the rotating shaft 22 into the vertical linear motion of the sampling cylinder 1. As the rotating shaft 22 rotates, the traction rope 24 moves the sampling cylinder 1 up or down within the geothermal well, effectively transmitting power and enabling the sampling cylinder 1 to move safely and stably within the well. Furthermore, the position of the sampling cylinder 1 can be flexibly adjusted as needed to ensure accurate collection of geothermal fluid samples from different depths.

[0045] The cylinder 11 and the top cover 12 are connected by threads. This threaded connection provides a reliable connection between the cylinder 11 and the top cover 12, tightly binding them together to form a relatively enclosed space to accommodate the geothermal fluid sample. This ensures that the top cover 12 will not easily detach from the cylinder 11 during sampling, guaranteeing the structural integrity of the sampling device. During the tightening of the threads, the contact surfaces of the cylinder 11 and the top cover 12 press against each other, creating a seal and reducing the possibility of geothermal fluid leakage from the connection point. The threaded connection is also detachable, facilitating cleaning, maintenance, and component replacement of the sampling cylinder 1 before and after sampling. When inspection or repair of the inside of the sampling cylinder 1 is required, the top cover 12 can be easily unscrewed from the cylinder 11; after completing the necessary procedures, the two can be quickly reassembled.

[0046] The top cover 12 is equipped with a pull ring 121 and a lifting ring 122. The traction rope 24 is connected to the lifting ring 122, and the pulling rope 3 is connected to the pull ring 121. The pull ring 121 serves as the connection point between the pulling rope 3 and the top cover 12, allowing operators to control the movement of the sealing component 13 inside the sampling tube 1 via the pulling rope 3. When the pulling rope 3 is pulled, the force is transmitted to the connecting column 16 through the pull ring 121, which in turn drives the sealing plate 14 and the sealing component 13 to move, thereby opening or closing the water inlet 111. When geothermal fluid samples need to be collected, the water inlet 111 can be opened accurately; after sampling, the water inlet 111 can be closed in time to prevent sample leakage. In addition, the pull ring 121 concentrates the pulling force applied by the pulling rope 3 onto the top cover 12, making the force transmission more stable and effective, and avoiding insensitive operation or component damage caused by force dispersion.

[0047] The lifting ring 122, as the connecting component between the traction rope 24 and the top cover 12, transmits the tension of the lifting mechanism 2 to the sampling cylinder 1, enabling the lifting and lowering of the sampling cylinder 1 in the geothermal well. The design of the lifting ring 122 ensures that the tension of the traction rope 24 is evenly distributed on the top cover 12, guaranteeing the stability of the sampling cylinder 1 during lifting and lowering, and preventing the sampling cylinder 1 from tilting or shaking.

[0048] The bottom of the sealing component 13 is set as an inverted cone. During the sampling process, when the sealing component 13 is opened, the bottom of the inverted cone can guide the geothermal fluid to smoothly enter the inlet tank 111. The geothermal fluid has certain flow characteristics in the geothermal well. The inverted cone structure can optimize the flow direction of the fluid, making it flow into the inlet tank 111 more concentratedly, reducing the turbulence and dispersion of the fluid near the inlet.

[0049] When the sealing component 13 closes the water inlet 111, the inverted cone design allows the sealing component 13 to fit better against the inner wall of the water inlet 111. As the sealing component 13 is gradually pressed down, the contact area between the side of the inverted cone and the inner wall of the water inlet 111 gradually increases, and the pressure distribution becomes more uniform. This effectively prevents geothermal fluid from leaking out from the gap between the water inlet 111 and the sealing component 13, thereby enhancing the sealing performance. Geothermal fluid usually contains some minerals, silt, and other impurities. The bottom of the inverted cone makes it difficult for impurities to accumulate around the sealing component 13. When the sealing component 13 is closed, the impurities will slide down along the side of the inverted cone and are not easy to accumulate at the contact point between the sealing component 13 and the water inlet 111. This avoids the sealing effect and normal opening and closing action of the sealing component 13 due to the accumulation of impurities.

[0050] A limiting groove 112 is provided inside the cylinder 11, and a sealing plate 14 is installed in the limiting groove 112. The height of the inverted cone is greater than the height of the limiting groove 112. The limiting groove 112 provides a limited space for the movement of the sealing plate 14, allowing the sealing plate 14 to move up and down only within the range specified by the limiting groove 112. This ensures the stability of the movement trajectory of the sealing plate 14 and prevents it from excessively deviating or shaking under the action of the spring 15. This ensures that the connecting column 16, support column 17, and sealing component 13 connected to the sealing plate 14 can work together as designed. By limiting the movement of the sealing plate 14, the compression and extension of the spring 15 between the sealing plate 14 and the top cover 12 can be better controlled, thereby ensuring the sealing effect between the sealing plate 14 and the inside of the cylinder 11. When the sealing plate 14 moves stably within the limiting groove 112, it can effectively prevent geothermal fluid from leaking from the gap between the sealing plate 14 and the wall of the cylinder 11, improving the sealing performance of the sampling cylinder 1.

[0051] When the sealing element 13 closes the inlet tank 111, because the height of the inverted cone is greater than the height of the limiting groove 112, the sealing element 13 can be fully inserted into the inlet tank 111 and form a good seal. The inverted cone structure fits more tightly with the inner wall of the inlet tank 111, which can effectively prevent geothermal fluid from leaking from the inlet tank 111. Even under certain pressure, reliable sealing can be guaranteed. During the operation of the pulling rope 3 to control the opening and closing of the sealing element 13, the design of the inverted cone height allows the sealing element 13 to have sufficient stroke during movement to achieve the function of fully opening and closing the inlet tank 111. When the pulling rope 3 is pulled, the sealing element 13 can be smoothly pulled out of the inlet tank 111, allowing the geothermal fluid to enter the sampling tube 1; when the pulling rope 3 is released, the sealing element 13 can accurately return to the inlet tank 111 to seal.

[0052] A one-way vent valve 113 is installed on the side wall of the sampling cylinder 11. During the process of placing the sampling cylinder 1 into the geothermal well, the inside of the sampling cylinder 1 is initially filled with air. As the sampling cylinder 1 gradually enters the geothermal well, the surrounding geothermal fluid begins to enter the sampling cylinder 1 through the inlet channel 111. At this time, the one-way vent valve 113 allows the air inside the sampling cylinder 1 to be smoothly discharged, making room for the geothermal fluid to enter the sampling cylinder 1 and ensuring that the geothermal fluid can flow smoothly into the sampling cylinder 1 to complete the sampling process. In the geothermal well, the pressure will gradually increase with the depth. When the sampling cylinder 1 is filled with geothermal fluid, its internal pressure may differ from the external pressure. The one-way vent valve 113 can automatically adjust the pressure inside the sampling cylinder 1 under the action of pressure difference to make it equal to the external pressure. This can avoid damage to the sampling cylinder 1 due to excessive pressure difference, and also help maintain the sealing and stability of the sampling cylinder 1.

[0053] The one-way exhaust valve 113 has a one-way conduction characteristic, allowing only air to be discharged from the inside of the sampling tube 1, while preventing external geothermal fluids or other impurities from flowing back into the sampling tube 1 through the exhaust valve. This can effectively prevent the sample in the sampling tube 1 from being contaminated, ensuring the purity and accuracy of the collected geothermal fluid sample.

[0054] The cylinder 11, top cover 12, and sealing plate 14 are all made of heat-insulating materials. In geothermal energy development, geothermal fluids usually have high temperatures. Using heat-insulating materials to make the cylinder 11, top cover 12, and sealing plate 14 can effectively reduce heat loss of geothermal fluids during sampling, ensuring that the collected geothermal fluid samples maintain a relatively stable temperature, making subsequent measurement and analysis of geothermal fluid temperature parameters more accurate. Temperature stability helps maintain the stability of the physical and chemical properties of geothermal fluids, reducing changes in fluid composition and phase state caused by temperature changes, and ensuring that the collected samples can truly reflect the actual situation inside the geothermal well.

[0055] A counterweight 18 is provided at the bottom of the side wall of the cylinder 11. In the geothermal well, factors such as water flow and the surge of geothermal fluid may cause the sampling cylinder 1 to sway or tilt. The counterweight 18 is located at the bottom of the side wall of the cylinder 11, which lowers the center of gravity of the sampling cylinder 1, making the sampling cylinder 1 more stable in the water, reducing the possibility of swaying and tilting, and ensuring that the sampling process can be carried out smoothly. During the process of placing the sampling cylinder 1 into the geothermal well and lifting it out of the geothermal well, the counterweight 18 helps to keep the sampling cylinder 1 vertical, which can prevent the sampling cylinder 1 from colliding with the geothermal well wall, protect the sampling cylinder 1 from damage, and also ensure that the sampling cylinder 1 accurately reaches the predetermined sampling depth. The stable state of the sampling cylinder 1 is conducive to the sealing component 13 to more accurately perform the action of opening and closing the water inlet trough 111. If the sampling cylinder 1 shakes too much, it may affect the cooperation between the sealing component 13 and the water inlet trough 111, resulting in poor sealing or inability to open and close normally. The counterweight 18 ensures the stability of the sampling cylinder 1, thereby indirectly improving the working reliability of the sealing component 13.

[0056] A displacement sensor is installed on the sampling cylinder 1, which is connected to a controller. The displacement sensor can acquire the position information of the sampling cylinder 1 in the geothermal well in real time, accurately measure the displacement changes during its lowering and lifting process. By monitoring the displacement, the operator can accurately know the depth of the sampling cylinder 1, ensuring that it reaches the predetermined sampling position. The collected displacement data is transmitted to the controller, which precisely controls the lifting mechanism 2 according to the preset sampling depth requirements. If the sampling cylinder 1 has not reached the specified depth, the controller can adjust the operation of the power source 23 to make the rotating shaft 22 continue to rotate and lower the sampling cylinder 1; if the specified depth has been reached, the lowering operation is stopped to ensure the accuracy of the sampling depth.

[0057] During the lifting and lowering process, the displacement sensor can monitor the position of the sampling cylinder 1 in real time to prevent it from exceeding the safe range of the geothermal well, prevent damage to the sampling cylinder 1 or collision with the equipment at the bottom of the well due to excessive lowering, and also prevent accidents such as breakage of the traction rope 24 caused by excessive lifting.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A geothermal water pumping and sampling device, characterized by: The utility model provides a sampling device, including sampling cylinder (1) and lifting mechanism (2), lifting mechanism (2) is connected sampling cylinder (1), sampling cylinder (1) includes cylinder body (11) and top cover (12), top cover (12) is installed at the top of cylinder body (11), the bottom of cylinder body (11) is provided with water inlet groove (111), the water inlet groove (111) is equipped with obturator (13), cylinder body (11) is installed with sealing plate (14), a plurality of springs (15) are equipped between sealing plate (14) and top cover (12), one side of sealing plate (14) is equipped with connecting column (16), the other side is equipped with support column (17), the other end of support column (17) is connected with obturator (13), the other end of connecting column (16) passes through and extends top cover (12), connecting column (16) top is connected with pull rope (3), top cover (12) is connected with lifting mechanism (2).

2. The geothermal water extraction sampling device of claim 1, wherein: The bottom of the obturator (13) is provided as an inverted cone.

3. The geothermal water extraction sampling device of claim 2, wherein: The cylinder body (11) is provided with a limiting groove (112), and the sealing plate (14) is installed in the limiting groove (112).

4. The geothermal water extraction sampling device of claim 1, wherein: The cylinder body (11) and the top cover (12) are connected by threads.

5. The geothermal water extraction sampling device of claim 1, wherein: The lifting mechanism (2) includes a bracket (21), a rotating shaft (22) and a power source (23) are installed on the bracket (21), the power source (23) is drivingly connected to the rotating shaft (22), the rotating shaft (22) is wound with a traction rope (24), and the traction rope (24) is connected to the top cover (12).

6. The geothermal water extraction sampling device of claim 5, wherein: The top cover (12) is provided with a pull ring (121) and a lifting ring (122), the traction rope (24) is connected to the lifting ring (122), and the pull rope (3) is connected to the pull ring (121).

7. The geothermal water extraction sampling device of claim 1, wherein: The sidewall of the cylinder body (11) is provided with a one-way exhaust valve (113).

8. The geothermal water extraction sampling device of claim 1, wherein: The materials of the cylinder body (11), the top cover (12) and the sealing plate (14) are all heat insulation materials.

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