Sampling device for geothermal well water

Abstract

The utility model relates to a sampling device for geothermal well water. Comprising a supporting arm adjusting assembly, a pulley is installed at the end of the supporting arm adjusting assembly, a hoisting assembly is further included, a hoisting steel wire rope is wound around the hoisting assembly, a lifting appliance connecting piece is installed after the end of the hoisting steel wire rope is wound around the pulley, an installation base structure is installed on the lifting appliance connecting piece through a plurality of hanging steel wire ropes, and a water taking pump is installed on the installation base structure. A liquid taking pipe is mounted at a water inlet of the water taking pump, a liquid injection pipe is mounted at a water outlet of the water taking pump, and an electromagnetic valve is arranged at a water inlet of the liquid taking pipe; the device further comprises a liquid storage assembly. A plurality of tension sensors and floating balls are mounted on the mounting seat structure; each tension sensor is electrically connected with the electromagnetic valve and the water taking pump; the liquid storage assembly comprises a containing groove formed in the mounting seat structure, a mounting buckle cover is buckled at an opening of the containing groove, and a water inlet communicated with the liquid injection pipe is formed in the mounting buckle cover; an inner turntable is arranged at the lower part of the accommodating groove, and a plurality of sampling bottles are inserted into the inner turntable; the device further comprises an indexing rotation drive. According to the utility model, a plurality of water layers can be sampled, excessive manual operation is not needed, the sampling is automatically completed, and the safety is high.

Description

Technical Field

[0001] This utility model belongs to the field of water sampling technology, and in particular relates to a sampling device for geothermal well water. Background Technology

[0002] Geothermal energy is an energy source inherent in the Earth itself and is considered a renewable energy source. Geothermal temperatures in the middle and deeper layers are higher than in lower layers, making it suitable for power generation, housing heating, and other applications. Compared to energy sources like coal and oil, geothermal energy has the advantages of being clean and reusable, thus qualifying as a renewable resource.

[0003] In the process of geothermal energy development and utilization, it is necessary to sample and analyze the geothermal water to understand its composition, characteristics, and other parameters, thereby providing data support for subsequent development and utilization. Because relatively impermeable layers exist in the geological structure, groundwater also stratifies, and the indicators and composition of the water in each layer are not entirely the same, thus requiring stratified sampling.

[0004] Existing sampling devices typically employ fixed-point sampling of a single aquifer to ensure data accuracy. However, this method yields only a single sample per sampling, making it unsuitable for simultaneous sampling of multiple aquifers. Furthermore, sampling requires personnel to approach the water body, which poses significant challenges and risks to personnel, especially when encountering water outcrops in complex terrain, rugged locations, or unusual environments. Therefore, there is an urgent need to design a geothermal well water sampling device to address these issues. Utility Model Content

[0005] This invention provides a geothermal well water sampling device to solve the technical problems existing in the prior art. This invention can sample multiple water layers, requires minimal manual operation, is fully automated, and offers high safety.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A geothermal well water sampling device includes an angle-adjustable support arm adjustment assembly, a pulley installed at the end of the support arm adjustment assembly, and a winch assembly installed on the support arm adjustment assembly. A winch wire rope is wound on the winch assembly, and a lifting device connector is installed at the end of the winch wire rope after passing over the pulley. A mounting base structure is installed on the lifting device connector through several hanging wire ropes. A water pump is installed on the mounting base structure. A liquid extraction pipe is installed at the inlet of the water pump, and a liquid injection pipe is installed at the outlet. A solenoid valve is installed at the inlet of the liquid extraction pipe. The device also includes... The system includes a liquid storage assembly mounted on a mounting base structure for receiving water samples delivered by a self-filling pipe; several tension sensors are mounted on the mounting base structure, each with a float; each tension sensor is electrically connected to a solenoid valve and a water pump; the liquid storage assembly includes a receiving groove in the mounting base structure, with a mounting cap fastened to the opening of the receiving groove, and an inlet connected to the filling pipe on the mounting cap; an inner turntable is located at the bottom of the receiving groove, with multiple sampling bottles evenly distributed circumferentially inserted on the inner turntable; and an indexing rotation drive mounted on the mounting base structure for driving the inner turntable to rotate in steps.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a geothermal well water sampling device. The adjustable support arm allows for convenient and flexible adjustment of the sampling device by operators, eliminating the need for personnel to approach the water body, thus ensuring high safety and ease of operation. The winch assembly, winch wire rope, and pulleys work together to lower the sampling device to different depths underwater and facilitate lifting after sampling. The injection pipe, water pump, and solenoid valve enable groundwater extraction. Several tension sensors and floating balls control the solenoid valve and water pump to start after the mounting structure has sunk to the required depths, facilitating water sample extraction. The storage component receives water samples extracted from different depths by the water pump, enabling groundwater sampling at various depths. Compared to existing technologies, this utility model can sample multiple water layers, requiring minimal manual operation, and is fully automated with high safety.

[0008] Preferably, the top surface of the inner turntable has several grooves evenly distributed along the circumference, and the turntable also includes bottle support sleeves fixed to the top surface of the inner turntable, each corresponding to one of the grooves; multiple sampling bottles are inserted into the corresponding grooves and bottle support sleeves respectively.

[0009] Preferably, the mounting base structure includes an intermediate base for mounting the water intake pump, with a receiving groove formed on the intermediate base; a circumferential base with an annular structure is mounted on the intermediate base, and several rope holes for mounting several hanging wire ropes are formed on the circumferential base; it also includes a waterproof box installed between the intermediate base and the circumferential base, and an indexing rotation drive is installed inside the waterproof box.

[0010] Preferably, a plurality of counterweights are evenly distributed on the circumferential seat, and several tension sensors are respectively installed on the plurality of counterweights.

[0011] Preferably, the indexing rotation drive includes a Geneva mechanism connected to the center of the inner turntable via a rotating shaft, and also includes a rotary motor connected to the Geneva mechanism.

[0012] Preferably, the outrigger adjustment assembly includes a bracket, a slewing drive mounted on the bracket and a slewing strut mounted through the slewing drive, and a slewing motor for driving the slewing drive mounted on the bracket; a second linear drive is pivotally connected to the top of the slewing strut, and the assembly also includes a first linear drive pivotally connected between the slewing strut and the second linear drive.

[0013] Preferably, a filter element is installed at the inlet of the liquid collection pipe. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of part of the main structure of this utility model;

[0016] Figure 3 This is a partial structural schematic diagram of the liquid storage component in this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the arm adjustment component in this utility model.

[0018] In the diagram: 1. Support frame; 2. Rotary motor; 3. Rotary drive; 4. Rotary support column; 5. Linear drive one; 6. Linear drive two; 7. Winch; 8. Winch wire rope; 9. Pulley; 10. Lifting device connector; 11. Injection pipe; 12. Liquid storage assembly; 12-1. Receptacle; 12-2. Mounting cap; 12-3. Sampling bottle; 12-4. Inner turntable; 12-5. Bottle support sleeve; 12-6. Indexing rotation drive; 12-6-1. Rotary motor; 12-6-2. Grooved wheel mechanism; 13. Hanging wire rope; 14. Liquid collection pipe; 15. Solenoid valve; 16. Counterweight; 17. Mounting base structure; 17-1. Intermediate base; 17-2. Circumferential base; 18. Water pump; 19. Tension sensor; 20. Floating ball. Detailed Implementation

[0019] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0020] Please see Figure 1 The geothermal well water sampling device of this utility model includes an angle-adjustable support arm adjustment assembly, with a pulley 9 installed at the end of the support arm adjustment assembly. It also includes a winch assembly 7 installed on the support arm adjustment assembly, with a winch wire rope 8 wound around the winch assembly 7. The end of the winch wire rope 8 passes over the pulley 9 and is connected to a lifting device connector 10. A mounting base structure 17 is installed on the lifting device connector 10 via several hanging wire ropes 13. A water pump 18 is installed on the mounting base structure 17. A liquid extraction pipe 14 is installed at the inlet of the water pump 18, and an injection pipe 11 is installed at the outlet. A solenoid valve 15 is installed at the inlet of the liquid extraction pipe 14. Additionally, a filter is installed at the inlet of the liquid extraction pipe 14 to filter out impurities with relatively large particle sizes that do not affect water sample analysis.

[0021] This invention also includes a liquid storage assembly 12 disposed on the mounting base structure 17 for receiving water samples transported by the self-injection pipe 11; a plurality of tension sensors 19 are mounted on the mounting base structure 17, and a float ball 20 is mounted on each tension sensor 19; each tension sensor 19 is electrically connected to a solenoid valve 15 and a water pump 18. All of the aforementioned tension sensors 19 are waterproof sensors, and the water pump 18 is a deep-water waterproof pump.

[0022] See further Figure 2 The aforementioned liquid storage assembly 12 includes a receiving groove 12-1 opened on the mounting base structure 17, a mounting cap 12-2 fastened to the opening of the receiving groove 12-1, and an inlet connected to the injection pipe 11 on the mounting cap 12-2; an inner turntable 12-4 is provided at the lower part of the receiving groove 12-1, and a plurality of sampling bottles 12-3 evenly distributed circumferentially are inserted on the inner turntable 12-4; it also includes an indexing rotation drive 12-6 installed on the mounting base structure 17, used to drive the inner turntable 12-4 to rotate in steps. As the plurality of sampling bottles 12-3 rotate with the inner turntable 12-4, the bottle mouths of each sampling bottle 12-3 pass sequentially directly below the inlet provided on the mounting cap 12-2.

[0023] Furthermore, the indexing rotation drive 12-6 includes a Geneva mechanism 12-6-2 connected to the center of the inner turntable 12-4 via a rotating shaft, and a rotary motor 12-6-1 connected to the Geneva mechanism 12-6-2; wherein the Geneva mechanism 12-6-2 includes a Geneva wheel connected to the rotating shaft, and an active dial mounted on the output shaft of the rotary motor 12-6-1, with a round pin fixed on the outer edge of the top wall of the active dial to cooperate with the Geneva wheel.

[0024] See further Figure 3 The inner turntable 12-4 has several grooves evenly distributed along the circumference on its top surface, and also includes bottle support sleeves 12-5 fixed to the top surface of the inner turntable 12-4, which are respectively arranged in correspondence with the grooves; multiple sampling bottles 12-3 are respectively inserted into the corresponding grooves and bottle support sleeves 12-5.

[0025] In actual operation, the indexing drive 12-6 can drive the inner turntable 12-4 mounted on it to rotate stepwise, which in turn drives the sampling bottles 12-3 inserted in each bottle sleeve 12-5 to rotate stepwise. To prevent the sampled water in the sampling bottle 12-3 from spilling out during operation, the bottle mouth of the sampling bottle 12-3 is in contact with the inner top surface of the mounting cap 12-2 during rotation. In addition, during sampling, too much sample should not be poured into the sampling bottle 12-3; generally, it is sufficient to fill it to two-thirds to half of its volume. To prevent the sampled water in the sampling bottle 12-3 from tipping over during operation, the bottle sleeve 12-5 can limit the insertion of the sampling bottle 12-3 to prevent it from tipping over.

[0026] In actual operation, sampling bottles 12-3 inserted into different support sleeves 12-5 are used to receive water samples from different depths. For easy identification, corresponding markings can be made on the cylinder wall of the support sleeve 12-5 and on the bottle body of the corresponding sampling bottle 12-3 inserted therein, making it easy for staff to distinguish. In this embodiment, the number of the aforementioned tension sensors 19 is the same as the number of sampling bottles 12-3. In this utility model, six tension sensors 19 and six sampling bottles 12-3 are provided. The buoyancy of the floating balls 20 corresponding to different sampling bottles 12-3 is different in the water. In actual operation, different tension thresholds are preset for several tension sensors 19 according to different underground depths, and they are numbered from first to sixth according to the threshold from smallest to largest. At the same time, the floating balls 20 corresponding to the tension sensors 19 are also marked with the same number. In addition, the floating balls 20 are set with different volumes according to the groundwater depth, and are arranged in a stepped manner.

[0027] See further Figure 2The aforementioned mounting structure 17 includes an intermediate seat 17-1 for mounting the water pump 18, with a receiving groove 12-1 formed on the intermediate seat 17-1. A circumferential seat 17-2 with a ring-shaped structure is mounted on the intermediate seat 17-1. The circumferential seat 17-2 has several rope-passing holes for mounting several hanging wire ropes 13. One end of the hanging wire rope 13 passes through the rope-passing hole on the circumferential seat 17-2, and the other end of the hanging wire rope 13 is connected to the lifting device connector 10, thereby realizing the installation of the mounting structure 17. The mounting structure 17 also includes a waterproof box installed between the intermediate seat 17-1 and the circumferential seat 17-2, with an indexing rotation drive 12-6 installed inside the waterproof box. The rotating shaft of the indexing rotation drive 12-6 passes through the intermediate seat 17-1 and is rotatably connected to the intermediate seat 17-1 through a rolling bearing. The rotary motor 12-6-1 and the grooved wheel mechanism 12-6-2 are both installed in the waterproof box.

[0028] In addition, to further ensure that the sampling device can sink quickly, a number of evenly distributed counterweights 16 are installed on the circumferential seat 17-2. For ease of installation, the aforementioned tension sensors 19 can be installed on the multiple counterweights 16 respectively.

[0029] like Figure 4 As shown, the aforementioned outrigger adjustment assembly includes a bracket 1, a rotary drive 3 mounted on the bracket 1, and a rotary support column 4 mounted via the rotary drive 3. A rotary motor 2 for driving the rotary drive 3 is mounted on the bracket 1. A linear drive 6 is pivotally connected to the top of the rotary support column 4, and a linear drive 5 is pivotally connected between the rotary support column 4 and the linear drive 6. The aforementioned winch assembly 7 is mounted on the linear drive 6, and a pulley 9 is connected to the extended end of the linear drive 6 via a Y-joint and a pin. Furthermore, the aforementioned linear drive 5 and linear drive 6 can be hydraulic cylinders or electro-hydraulic cylinders.

[0030] Working principle:

[0031] The mounting base structure 17 is moved to the wellhead of the geothermal well by the outrigger adjustment assembly. Then, the mounting base structure 17 is moved to different positions underwater by the cooperation of the winch assembly 7, the winch wire rope 8 and the pulley 9. In the actual working process, the aforementioned tension sensors 19 are preset with tension thresholds. The floating balls 20 will be subjected to buoyancy underwater. As their depth underwater increases, the buoyancy they generate gradually increases. At the same time, the buoyancy they generate will apply a tension to their corresponding tension sensor 19.

[0032] When the first floating ball 20 exerts a tension on its corresponding tension sensor 19 to a preset tension threshold, the first tension sensor 19 will immediately send a signal to the solenoid valve 15 to open it. At the same time, the winch assembly 7 stops operating and the water pump 18 starts to extract groundwater at the corresponding depth and pour the extracted water into the corresponding sampling bottle 12-3. After completing the above single sampling, the indexing drive 12-6 starts, driving the inner turntable 12-4 installed on it to rotate at a preset angle, so that the next corresponding sampling bottle 12-3 rotates to below the outlet of the injection pipe 11, so as to facilitate groundwater sampling at the next depth. The above operation is repeated until the sampling operation at all depths is completed. Then, the mounting structure 17 is lifted upward to the top of the wellhead by the cooperation of the winch assembly 7, the winch wire rope 8 and the pulley 9, so that the staff can take out all the sampling bottles 12-3 for subsequent analysis operations.

Claims

1. A sampling device for geothermal well water, characterized in that: The system includes an angle-adjustable outrigger adjustment assembly, with a pulley (9) installed at the end of the outrigger adjustment assembly. It also includes a winch assembly (7) mounted on the outrigger adjustment assembly, with a winch wire rope (8) wound around the winch assembly (7). A lifting device connector (10) is installed at the end of the winch wire rope (8) after passing over the pulley (9). A mounting base structure (17) is mounted on the lifting device connector (10) via several hanging wire ropes (13). A water pump (18) is mounted on the mounting base structure (17). A liquid extraction pipe (14) is installed at the inlet of the water pump (18), and an injection pipe (11) is installed at the outlet. A solenoid valve (15) is installed at the inlet of the liquid extraction pipe (14). The system also includes a liquid storage assembly (12) mounted on the mounting base structure (17) for receiving water samples transported from the injection pipe (11). (17) is equipped with several tension sensors (19), and a floating ball (20) is installed on each tension sensor (19); each tension sensor (19) is electrically connected to a solenoid valve (15) and a water pump (18); the liquid storage assembly (12) includes a receiving groove (12-1) opened on the mounting base structure (17), a mounting cover (12-2) is fastened at the opening of the receiving groove (12-1), and an inlet connected to the injection pipe (11) is provided on the mounting cover (12-2); an inner turntable (12-4) is provided at the lower part of the receiving groove (12-1), and multiple sampling bottles (12-3) are inserted on the inner turntable (12-4) and evenly distributed in the circumferential direction; it also includes an indexing rotation drive (12-6) installed on the mounting base structure (17) for driving the inner turntable (12-4) to rotate in steps.

2. The geothermal well water sampling device as described in claim 1, characterized in that: The top surface of the inner turntable (12-4) is provided with several grooves evenly distributed along the circumference, and also includes bottle support sleeves (12-5) fixed to the top surface of the inner turntable (12-4) and respectively corresponding to the several grooves; multiple sampling bottles (12-3) are respectively inserted into the corresponding grooves and bottle support sleeves (12-5).

3. The geothermal well water sampling device as described in claim 1, characterized in that: The mounting structure (17) includes an intermediate seat (17-1) for mounting the water pump (18), and a receiving groove (12-1) is opened on the intermediate seat (17-1); a circumferential seat (17-2) with an annular structure is installed on the intermediate seat (17-1), and several rope holes for mounting several hanging wire ropes (13) are opened on the circumferential seat (17-2); it also includes a waterproof box installed between the intermediate seat (17-1) and the circumferential seat (17-2), and an indexing rotation drive (12-6) is installed in the waterproof box.

4. The geothermal well water sampling device as described in claim 3, characterized in that: Multiple counterweights (16) are evenly distributed on the circumferential seat (17-2), and several tension sensors (19) are respectively installed on the multiple counterweights (16).

5. The geothermal well water sampling device as described in claim 1, characterized in that: The indexing rotation drive (12-6) includes a Geneva mechanism (12-6-2) connected to the center of the inner turntable (12-4) via a rotating shaft, and a rotary motor (12-6-1) connected to the Geneva mechanism (12-6-2).

6. The geothermal well water sampling device as described in claim 1, characterized in that: The outrigger adjustment assembly includes a bracket (1), a rotary drive (3) mounted on the bracket (1) and a rotary strut (4) mounted on the rotary drive (3), a rotary motor (2) for driving the rotary drive (3) mounted on the bracket (1); a linear drive (6) is pivotally connected to the top of the rotary strut (4), and a linear drive (5) is pivotally connected between the rotary strut (4) and the linear drive (6).

7. The geothermal well water sampling device as described in claim 1, characterized in that: A filter is installed at the inlet of the liquid collection pipe (14).

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