A clamp type geothermal well outside aquifer liquid level monitoring device and installation method

Abstract

The application provides a clamp type geothermal well outer aquifer liquid level monitoring device and a mounting method, which comprises a connecting pipe mounted in a measuring well hole, a plurality of detection short pipes connected in series are connected to one end of the connecting pipe, a clamp connector is arranged at the center position of each detection short pipe, a liquid level meter is mounted in the clamp connector, and a processing terminal is electrically connected to the liquid level meter; wherein the processing terminal generates a corresponding relationship between liquid level changes and underground aquifer water supply capacity based on analysis of liquid level parameters collected by the liquid level meter. In the device, a plurality of detection short pipes are connected to the connecting pipe, then the liquid level meter mounted in the detection short pipe directly collects original data of the liquid level of the aquifer outside the geothermal well, the distribution and flow state of the underground water of the formation outside the well are directly obtained, the unobservable seepage recharge state of the underground aquifer is converted into quantifiable liquid level data, and long-term layered monitoring of the liquid level of the multilayer aquifer outside the geothermal well is realized.

Description

Technical Field

[0001] This invention belongs to the field of safety detection technology for new energy and geothermal well engineering, specifically to a clamp-type geothermal well aquifer level monitoring device and installation method. Background Technology

[0002] In the development of medium-deep and ultra-deep geothermal resources, geothermal wells generally suffer from a decline in formation temperature and insufficient thermal recovery capacity after long-term operation. The thermal recovery process of geothermal wells depends not only on the thermal conductivity of the surrounding rock, but also on the distribution, permeability, and flow intensity of the aquifer. When a well-developed aquifer exists around a geothermal well and the groundwater flow is strong, the flowing water can continuously replenish heat to the well wall, thereby significantly enhancing the thermal recovery capacity of the formation around the geothermal well. However, when the aquifer is underdeveloped or the groundwater flow is weak, the heat exchange process around the geothermal well is mainly based on conduction, and the heat replenishment rate is slow, which can easily lead to a faster decline in the heat extraction capacity of the geothermal well and affect its long-term stable operation.

[0003] In existing geothermal well operations, monitoring and evaluation of the system's operational status typically relies on parameters such as wellhead temperature, return water temperature, and flow rate. However, this monitoring method primarily reflects the heat exchange results of the working fluid inside the geothermal well, making it difficult to directly obtain the distribution and flow of groundwater in the surrounding strata. In particular, it cannot effectively determine whether flow heat exchange conditions exist around the geothermal well and the strength of such flow heat exchange. Therefore, in practical engineering, the thermal recovery capacity and service life of geothermal wells are often difficult to accurately assess, leading to significant uncertainties in well location selection, operational control, and lifespan prediction. Summary of the Invention

[0004] To address the difficulty in directly obtaining the distribution and flow of groundwater in the strata outside geothermal wells during operation, which makes it difficult to assess the thermal recovery capacity and service life of geothermal wells, this invention provides a clamp-type geothermal well aquifer level monitoring device and installation method.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a clamp-type aquifer level monitoring device for the outer side of a geothermal well, comprising a connecting pipe installed in the measuring wellbore, a plurality of detection short pipes connected in series to one end of the connecting pipe, a clamp connector provided at the center of each detection short pipe, a level gauge installed in the clamp connector, and the level gauge electrically connected to a processing terminal; The processing terminal analyzes the liquid level parameters collected by the liquid level gauge to generate a correspondence between liquid level changes and the water supply capacity of the underground aquifer.

[0006] Preferably, the detection short tube is provided with multiple through holes, which connect the measuring well hole to the interior of the detection short tube. A connecting plate is provided inside the detection short tube near one end of the connecting pipe, and the end of the connecting plate located at the center of the detection short tube is connected to the clamp connector.

[0007] Preferably, the length of the detection tube is 50m.

[0008] Preferably, the length of each connecting pipe is 2000m to 2100m.

[0009] Preferably, the clamp connector includes a connecting seat connected to the connecting plate, a clamp connected to the side of the connecting seat away from the connecting plate, one end of the clamp passing around the level gauge and through the connecting seat, an adjusting seat provided on the clamp away from the connecting seat, and an adjusting screw connected between the adjusting seat and the connecting seat.

[0010] Preferably, a first helical tooth is provided on the outer wall of the clamp near the connecting seat; The inner wall of the clamp is provided with a second oblique tooth that meshes unidirectionally with the first oblique tooth groove near the adjusting seat.

[0011] Preferably, a protective pad is provided between the clamp and the level gauge.

[0012] Preferably, the processing terminal includes a data acquisition module, a display module, a storage module, and an analysis and evaluation module; The acquisition module is electrically connected to the level gauge and is used to acquire the level parameters collected inside the level gauge. The analysis and evaluation module is communicatively connected to the acquisition module and is used to extract all liquid level parameters acquired by the acquisition module, and to analyze the liquid level parameters at different times at the same location in the wellbore to determine the correspondence between liquid level changes and the water supply capacity of the underground aquifer. The display module is communicatively connected to the analysis and evaluation module, and is used to construct a display model based on the parameters of the measured wellbore, and to fit the correspondence determined by the analysis and evaluation module into the display model for display. The storage module is communicatively connected to the display module and the analysis and evaluation module, and is used to store the display model, the correspondence, and the liquid level parameters.

[0013] Preferably, the processing terminal further includes an alarm module, which is communicatively connected to the acquisition module and the display module, and is used to generate an alarm signal and the position parameters of the level gauge when the acquisition module fails to acquire the level parameter of any of the level gauges, and send them to the display module for early warning.

[0014] This invention proposes an installation method for the above-mentioned clamp-type geothermal well aquifer level monitoring device, comprising: A level gauge is installed on the clamp connector inside several detection short tubes, and several detection short tubes are connected together by welding. In the welding configuration, the end of two adjacent detection short tubes with the level gauge installed is welded to the end without the level gauge installed. In the structure formed by connecting the detection short tubes in series, the end of the level gauge is welded to one end of the connecting tube, and each level gauge is connected to the processing terminal through a communication cable, with the communication cable passing through the connecting tube. A measurement well hole of a predetermined depth is opened on the side of the geothermal well. One end of the connecting pipe connected to the detection short pipe is first placed into the measurement well hole and continuously lowered until it reaches the bottom of the measurement well hole, and then the connecting pipe is fixed.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This invention proposes a clamp-type aquifer level monitoring device for geothermal wells. The device connects several short detection tubes to a connecting pipe, and then directly collects raw data on the aquifer level outside the geothermal well through level gauges installed inside these tubes. This replaces the traditional method of only monitoring the working fluid parameters inside the geothermal well, providing a direct view of the distribution and flow state of groundwater in the surrounding strata. Then, by analyzing the time-series data of the level, a correlation between level changes and the aquifer's water supply capacity is established using a processing terminal. This transforms the unobservable seepage recharge state of the underground aquifer into quantifiable level data, enabling long-term stratified monitoring of the level of multiple aquifers outside the geothermal well.

[0016] Furthermore, this device incorporates a through-hole in the detection short pipe, connecting the monitoring chamber to the surrounding aquifer. Groundwater can freely flow into the detection short pipe, allowing the liquid level inside the pipe to synchronously reflect the true water level of the surrounding aquifer. This transforms the previously unobservable groundwater flow into a measurable liquid level. Simultaneously, a connecting plate positions the clamp connector and level gauge at the center of the detection short pipe, avoiding level measurement deviations caused by unilateral water flow on the well wall or pipe wall obstruction. This ensures that the collected liquid level data accurately corresponds to the groundwater recharge level of the target layer, preventing data distortion that could lead to significant errors in judging the aquifer's water supply capacity and the geothermal well's thermal recovery capacity, thus improving the accuracy of monitoring and evaluation.

[0017] Furthermore, this device divides the formation monitoring units into 50m segments, which can carry out independent layered monitoring of different aquifers along the well depth. It can clearly distinguish the degree of groundwater development and seepage capacity differences in different layers of deep formations, accurately identify the distribution of aquifers with varying water supply capacity, completely depict the longitudinal distribution characteristics of groundwater outside the geothermal well, and refine the layered assessment results of the thermal recovery capacity of different depth sections of the geothermal well.

[0018] Furthermore, the connecting pipe in this device is 2000m~2100m long. The detection short pipe equipped with a level gauge is lowered into the core heat exchange aquifer area of ​​the geothermal well, accurately covering the key formation section that affects the thermal recovery performance of the geothermal well. This enables long-term liquid level monitoring of the deep aquifer that determines the heat extraction efficiency and heat decay rate of the geothermal well, avoiding the omission of core heat exchange formation data due to insufficient monitoring depth, and ensuring the completeness and reliability of the overall thermal recovery capability and life assessment results of the geothermal well.

[0019] Furthermore, in the clamp connector of this device, the connecting seat and the connecting plate are rigidly fixed to form a stable bearing base. The clamp surrounds and locks the level gauge. Then, the distance between the connecting seat and the adjusting seat is adjusted by adjusting the adjusting screw to achieve adjustable clamping force. This ensures long-term stable fixation of the level gauge, eliminates displacement stress caused by high temperature in deep wells, fluid scouring, and thermal expansion and contraction of the pipe, and prevents the level gauge from loosening, shifting, or falling off, which could cause monitoring interruption. This ensures long-term continuous acquisition of aquifer level data, continuous tracking of groundwater dynamic changes, and avoids the inability to continuously assess the thermal recovery evolution trend of geothermal wells due to the loss of key data caused by monitoring equipment failure. Attached Figure Description

[0020] Figure 1 This invention provides an overall structural schematic diagram of a clamp-type geothermal well aquifer level monitoring device. Figure 2 This invention provides a schematic diagram of the connection between the detection short pipe and the clamp connector in a clamp-type geothermal well aquifer level monitoring device. Figure 3 This invention provides a schematic diagram of the connection between the clamp connector and the level gauge in a clamp-type geothermal well aquifer level monitoring device. In the attached diagram: 1. Connecting pipe; 2. Detection short pipe; 3. Through hole; 4. Level gauge; 5. Connecting plate; 6. Clamp connector; 7. Connecting seat; 8. Clamp; 9. Adjusting seat; 10. Adjusting screw; 11. First helical tooth; 12. Second helical tooth. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] This invention proposes a clamp-type aquifer level monitoring device on the outer side of a geothermal well, such as... Figures 1-3 As shown, the system includes a connecting pipe 1 installed in a separately drilled measuring well on the side of the geothermal well. One end of the connecting pipe 1 is connected to several interconnected short detection pipes 2. These short detection pipes 2 are arranged longitudinally along the strata, forming independent detection chambers at different target aquifer depths. Each short detection pipe 2 has a clamping connector 6 at its center, which stably holds a level gauge 4. All level gauges 4 are electrically connected to a processing terminal located on the ground via built-in cables. The processing terminal continuously receives time-series level parameters from the level gauges 4 at various depths in real time. Based on a built-in algorithm, it analyzes the level parameters collected by the level gauges 4 to generate a correlation between level changes and the water supply capacity of the underground aquifer. This device employs a separate measuring well located outside the geothermal well for monitoring, completely isolated from the existing heat extraction and circulation system. Monitoring data is unaffected by the circulating working fluid within the well. Several short monitoring pipes enable refined, vertically layered monitoring of the formation, fully covering the main heat-exchanging aquifers in the 2000-2500m medium-deep geothermal layers. It transforms the previously unobservable groundwater seepage and recharge status into readily quantifiable liquid level data, completely overcoming the limitation of traditional monitoring methods that cannot acquire groundwater information from outside the well. Layered liquid level data allows for direct differentiation of the development level of different aquifers, providing direct and reliable data for quantitative assessment of the geothermal well's thermal recovery capacity and service life. Furthermore, the device requires no large-scale modification to existing geothermal well pipelines and can be adapted for both newly built and operating geothermal wells, making it highly practical for engineering applications.

[0028] In this embodiment, the detection short pipe 2 is provided with multiple through holes 3, which connect the measuring well hole to the interior of the detection short pipe 2. Under the influence of formation pressure and seepage, groundwater in the aquifer outside the geothermal well can freely enter the interior of the detection short pipe 2 through the through holes 3, so that the liquid level in the short pipe is synchronized with the actual water level of the surrounding aquifer. A connecting plate is provided at one end of the detection short pipe 2 near the connecting pipe 1. The connecting plate extends towards the center of the detection short pipe 2, and a clamp connector 6 is connected to the end of the connecting plate at the center of the detection short pipe 2, so that the level gauge 4 is arranged at the axial center of the cavity. This avoids the liquid level measurement deviation caused by pipe wall obstruction and unilateral water flow disturbance, and ensures that the liquid level acquisition data accurately reflects the true groundwater recharge level of the corresponding section. In this embodiment, the length of the detection short pipe 2 is 50m. The 50m segmented structure can accurately divide the longitudinal formation monitoring sections, realize independent monitoring of multiple aquifers, and accurately identify the differences in seepage capacity of aquifers at different depths. Each connecting pipe 1 is 2000m~2100m long, suitable for medium and deep geothermal extraction depths. It can lower the detection short pipe 2 to the core heat exchange aquifer section at 2000~2500m, effectively improving the accuracy of judging the heat exchange performance and heat recovery capacity of geothermal wells.

[0029] In this embodiment, the clamp connector 6 includes a connecting seat 7 connected to the connecting plate. The connecting seat 7 is used to isolate the displacement stress caused by downhole fluid impact and formation thermal expansion and contraction. A clamp 8 is connected to the side of the connecting seat 7 away from the connecting plate. The clamp 8 has an arc-shaped wrapping structure. One end of the clamp 8 is wrapped around the level gauge 4 and passes through the connecting seat 7 to achieve limiting. An adjusting seat 9 is provided on the clamp 8 away from the connecting seat 7. An adjusting screw 10 is connected between the adjusting seat 9 and the connecting seat 7. Rotating the adjusting screw 10 can adjust the distance between the connecting seat 7 and the adjusting seat 9, thereby tightening or loosening the clamp. The inner diameter of the 8-ring design is adapted to accommodate various outer diameter specifications of level gauges 4, including float-type, pressure-type, and capacitive type. The clamp connection 6 solves the engineering pain points of level gauges being prone to loosening, displacement, and detachment under long-term monitoring conditions in deep wells. It is compatible with multiple models of level sensors, making the device highly versatile. The clamp clamping structure ensures long-term stable fixation of the level gauge 4, preventing displacement of the level gauge 4 and distortion of level acquisition data. This ensures continuous and uninterrupted acquisition of formation level time series data downhole for many years, providing a continuous and effective monitoring data source for long-term tracking of aquifer dynamic evolution and prediction of geothermal well thermal decay trends throughout their entire life cycle.

[0030] In this embodiment, a first helical tooth 11 is continuously arranged on the outer wall of the clamp 8 near the connecting seat 7; a second helical tooth 12 is arranged on the inner wall of the clamp 8 near the adjusting seat 9. The second helical tooth 12 and the first helical tooth 11 form a one-way meshing tooth groove structure. The second helical tooth 12 and the first helical tooth 11 only allow the clamp 8 to tighten inward. When subjected to reverse force, it automatically locks and cannot be loosened. The one-way helical tooth meshing forms a mechanical self-locking structure. After the adjusting screw 10 completes the clamping adjustment, it relies on the mutual engagement of the second helical tooth 12 and the first helical tooth 11 to achieve permanent locking, maintain a long-term clamping state, resist the relaxation force generated by the high-speed fluid scouring, formation vibration, and thermal expansion and contraction of the pipe, avoid the problem of the level gauge 4 shifting and monitoring failure caused by the clamp 8 loosening, reduce the frequency of later maintenance of deep well downhole equipment, ensure uninterrupted monitoring of the deep aquifer level, and avoid the distortion of geothermal well thermal recovery capacity and life assessment results due to missing monitoring data.

[0031] In this embodiment, a protective pad is provided between the clamp 8 and the level gauge 4. The protective pad is made of elastic rubber that is resistant to high temperatures and corrosion from underground mineralized water, and it tightly fills the gap between the clamp and the level gauge housing. The protective pad has multiple protective functions: it can buffer the clamping force of the clamp and the squeezing and wear of the level gauge housing caused by downhole vibration and impact, preventing damage and leakage to the sensor housing; at the same time, it isolates the metal clamp from the conductive housing of the level gauge, avoiding interference from stray currents in the well to the electrical signal of the level acquisition, and ensuring stable data transmission; in addition, the anti-slip properties of the rubber further enhance the clamping firmness of the level gauge 4, continuously ensuring the accuracy and reliability of the level measurement signal, and stably characterizing the real-time water supply capacity of each aquifer.

[0032] In this embodiment, the processing terminal includes a data acquisition module, a display module, a storage module, and an analysis and evaluation module. The data acquisition module is electrically connected to the level gauge 4 and is used to acquire the level parameters collected within the level gauge 4. The analysis and evaluation module is communicatively connected to the data acquisition module and is used to extract all the level parameters acquired by the data acquisition module, analyze the level parameters at different times at the same location within the measuring wellbore, and determine the correspondence between level changes and the water supply capacity of the underground aquifer. The display module is communicatively connected to the analysis and evaluation module and is used to construct a display model based on the parameters of the measuring wellbore, and fit the correspondence determined by the analysis and evaluation module into the display model for display. The storage module is communicatively connected to both the display module and the analysis and evaluation module and is used to store the display model, the correspondence, and the level parameters. The processing terminal enables fully automated acquisition, quantitative analysis, visualization, and permanent storage of liquid level data, overcoming the shortcomings of traditional monitoring methods that cannot quantify the flow characteristics of groundwater in the formation outside the well. It establishes a quantitative assessment model of aquifer water supply capacity through time-series liquid level data, intuitively distinguishing the strength of flow heat transfer in different well sections, and providing visualized data support for geothermal well intermittent exploitation strategies and unit load allocation optimization. Long-term storage of complete monitoring time-series data can track the evolution trend of geothermal well thermal recovery capacity throughout its entire life cycle, significantly improving the accuracy of geothermal well service life prediction and reducing the operational risks caused by long-term thermal decay failure.

[0033] In this embodiment, the processing terminal also includes an alarm module, which is communicatively connected to the acquisition module and the display module. When the acquisition module fails to acquire the level parameter of any level gauge 4, it determines that the level gauge 4 at the corresponding point is faulty, marks the formation depth, equipment number, and other location parameters corresponding to the faulty level gauge 4, generates a warning signal and the location parameters of the level gauge 4, and sends them to the display module for early warning. Based on the warning information, staff can quickly carry out maintenance and disposal, avoiding long-term loss of monitoring data for a single aquifer layer; effectively preventing the loss of key formation level information due to sensor failure, ensuring the data integrity for assessing aquifer water supply capacity and geothermal well thermal recovery capacity, avoiding problems such as misjudgment of geothermal well lifespan and operational control errors caused by monitoring failure, and improving the long-term operational safety and stability of the geothermal development system.

[0034] The present invention also provides an installation method for a clamp-type geothermal well aquifer level monitoring device, comprising: Level gauges 4 are installed on clamp connectors 6 inside several short detection tubes 2, and several short detection tubes 2 are connected together by welding. In the welding structure, the end of two adjacent short detection tubes 2 with level gauges 4 installed is welded to the end without level gauges 4 installed. In the structure formed after the short detection tubes 2 are connected in series, the end of the level gauge 4 is welded to one end of the connecting pipe 1. Each level gauge 4 is connected to the processing terminal through a communication cable, and the communication cable is run through the connecting pipe 1. A measuring well hole of a predetermined depth is opened on the side of the geothermal well. The end of the connecting pipe 1 connected to the short detection tube 2 is first put into the measuring well hole and continuously lowered until it reaches the bottom of the measuring well hole, and then the connecting pipe 1 is fixed.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A clamp-type aquifer level monitoring device for the outer side of a geothermal well, characterized in that, Includes a connecting pipe (1) installed in the measuring well hole, with a number of detection short pipes (2) connected in series at one end of the connecting pipe (1), and a clamp connector (6) provided at the center of each detection short pipe (2), with a level gauge (4) installed inside the clamp connector (6), and the level gauge (4) electrically connected to a processing terminal; The processing terminal analyzes the liquid level parameters collected by the liquid level gauge (4) to generate a correspondence between liquid level changes and the water supply capacity of the underground aquifer.

2. The clamp-type geothermal well aquifer level monitoring device according to claim 1, characterized in that, The detection short tube (2) is provided with multiple through holes (3), which connect the measuring well hole to the interior of the detection short tube (2). A connecting plate is provided inside the detection short tube (2) near one end of the connecting tube (1), and the end of the connecting plate located at the center of the detection short tube (2) is connected to the clamp connector (6).

3. The clamp-type geothermal well aquifer level monitoring device according to claim 2, characterized in that, The length of the detection tube (2) is 50m.

4. The clamp-type geothermal well aquifer level monitoring device according to claim 2, characterized in that, The length of each of the connecting pipes (1) is 2000m~2100m.

5. A clamp-type geothermal well aquifer level monitoring device according to claim 2, characterized in that, The clamp connector (6) includes a connecting seat (7) connected to the connecting plate. A clamp (8) is connected to the side of the connecting seat (7) away from the connecting plate. One end of the clamp (8) is wrapped around the level gauge (4) and passes through the connecting seat (7). An adjusting seat (9) is provided on the clamp (8) away from the connecting seat (7). An adjusting screw (10) is connected between the adjusting seat (9) and the connecting seat (7).

6. The clamp-type geothermal well aquifer level monitoring device according to claim 5, characterized in that, The clamp (8) has a first helical tooth (11) on its outer wall near the connecting seat (7). The inner wall of the clamp (8) near the adjusting seat (9) is provided with a second helical tooth (12) that meshes unidirectionally with the groove of the first helical tooth (11).

7. A clamp-type geothermal well aquifer level monitoring device according to claim 5, characterized in that, A protective pad is provided between the clamp (8) and the level gauge (4).

8. The clamp-type geothermal well aquifer level monitoring device according to claim 1, characterized in that, The processing terminal includes a data acquisition module, a display module, a storage module, and an analysis and evaluation module; The acquisition module is electrically connected to the level gauge (4) and is used to acquire the level parameters collected in the level gauge (4). The analysis and evaluation module is communicatively connected to the acquisition module and is used to extract all liquid level parameters acquired by the acquisition module, and to analyze the liquid level parameters at different times at the same location in the wellbore to determine the correspondence between liquid level changes and the water supply capacity of the underground aquifer. The display module is communicatively connected to the analysis and evaluation module, and is used to construct a display model based on the parameters of the measured wellbore, and to fit the correspondence determined by the analysis and evaluation module into the display model for display. The storage module is communicatively connected to the display module and the analysis and evaluation module, and is used to store the display model, the correspondence, and the liquid level parameters.

9. A clamp-type geothermal well aquifer level monitoring device according to claim 1, characterized in that, The processing terminal also includes an alarm module, which is communicatively connected to the acquisition module and the display module. When the acquisition module fails to acquire the liquid level parameter of any of the liquid level gauges (4), the alarm module generates an alarm signal and the position parameter of the liquid level gauges (4) and sends them to the display module for early warning.

10. A method for installing a clamp-type geothermal well aquifer level monitoring device as described in any one of claims 1 to 9, characterized in that, include: Level gauges (4) are installed on clamp connectors (6) inside several detection short tubes (2), and several detection short tubes (2) are connected together by welding. In the welding configuration, in two adjacent detection short tubes (2), the end with the level gauge (4) installed is welded to the end without the level gauge (4). In the structure formed by connecting the detection short tubes (2) in series, the end of the level gauge (4) is welded to one end of the connecting tube (1), and each level gauge (4) is connected to the processing terminal through a communication cable, and the communication cable is run through the connecting tube (1); A measuring well hole of a predetermined depth is opened on the side of the geothermal well. One end of the connecting pipe (1) connected to the detection short pipe (2) is first placed into the measuring well hole and continuously lowered until it reaches the bottom of the measuring well hole. The connecting pipe (1) is then fixed.

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