A device for measuring water level in geothermal wells

Abstract

The invention discloses a surveying and mapping device for geothermal well water level, which relates to the field of geothermal well measurement technology and includes an adaptive support and fixing mechanism and an automatic telescopic cleaning mechanism; the adaptive support and fixing mechanism includes: a cylindrical shell, a rope, a leg, an outer bracket, a connecting rod, a T-bar, a compression spring, a long rod, a cam and a driving assembly; the lower end of the rope is fixedly installed at the middle of the upper end of the cylindrical shell; the outer bracket is fixedly welded on the plane outside the cylindrical shell, and one end of the leg is rotatably installed on the rotating shaft of the outer bracket; when the invention is in use, after descending to a specified position of the geothermal well, the equipment can be fixed, so that the equipment remains stable, thereby ensuring the accuracy of the measurement, and the leg of the invention can automatically adapt to the expansion angle according to the inner wall diameter of the geothermal well, so that better support can be achieved for well walls of different diameters.

Description

Technical Field

[0001] The invention relates to the technical field of geothermal well measurement, and in particular to a geothermal well water level surveying and mapping device. Background Art

[0002] The liquid level in geothermal wells is a key parameter in the process of geothermal energy utilization. Its accurate measurement is of great significance for ensuring the safe operation of geothermal wells and optimizing the extraction efficiency of geothermal energy. However, due to the special environment of geothermal wells, such as high temperature, high pressure, corrosive gases and liquids, liquid level measurement faces many challenges. Traditional geothermal well liquid level measurement methods often have many limitations. For example, manual measurement methods are not only inefficient, but also easily affected by human errors. Although some automatic measurement methods based on sensors can achieve continuous monitoring, the stability and reliability of sensors are difficult to guarantee in harsh environments such as water flow and impurities, and the measurement accuracy is often greatly affected.

[0003] The Chinese patent with publication number CN112556785A discloses a device and method for measuring the water level of a geothermal well. The device for measuring the water level of a geothermal well includes a housing, a detection pipeline, a pressure detection device, a gas source and a gas pipeline; the detection pipeline and the pressure detection device are arranged in the housing; the detection pipeline includes three pipe openings, which are a first pipe opening, a second pipe opening and a third pipe opening; the first pipe opening is connected to the gas pipeline, the detection end of the pressure detection device is arranged and plugged into the second pipe opening, and the gas source is connected to the third pipe opening.

[0004] When the above invention is in use, the measuring device cannot be effectively fixed, resulting in inaccurate measurement data, and the position of the equipment cannot be adjusted to adapt to changes in water levels; the inventor has designed the above defects, and when the present invention is in use, it can fix the equipment after descending to the specified position of the geothermal well, so that the equipment remains stable, thereby ensuring the accuracy of measurement, and the support legs of the present invention can automatically adapt to the unfolding angle according to the inner wall diameter of the geothermal well, so that well walls of different diameters can be better supported; the pressure sensor of the present invention is installed in the measuring cavity, which can not only protect the pressure sensor, but also prevent the flow of impurities in the water from causing collisions with the pressure sensor and causing damage to the pressure sensor, and the scraper ring on the outer wall of the measuring cavity can rotate to clean up the impurities on the outer wall of the measuring cavity in real time, to prevent the through hole on the measuring cavity from being blocked and causing inaccurate measurement, and when the equipment is fixed in the well, when the water level drops, the pressure sensor fixed in the sleeve can follow the sleeve to drop, so that the pressure sensor re-enters the water, thereby continuing to measure the change in water level, without the need to manually lower the entire device for adjustment. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a device for measuring and mapping the water level of a geothermal well, which can effectively solve the problems in the background technology.

[0006] A surveying and mapping device for geothermal well water level, comprising an adaptive supporting and fixing mechanism and an automatic telescopic cleaning mechanism; the adaptive supporting and fixing mechanism comprises: a cylindrical shell, a rope, a leg, an outer bracket, a connecting rod, a T-bar, a compression spring, a long rod, a cam and a driving assembly; the lower end of the rope is fixedly mounted at the middle of the upper end of the cylindrical shell; the outer bracket is fixedly welded on the plane outside the cylindrical shell, one end of the leg is rotatably mounted on the rotating shaft of the outer bracket, a slot is provided in the middle of the leg, a short shaft is provided in the slot, the short shaft is rotatably connected to one end of the connecting rod, the other end of the connecting rod is rotatably mounted on a hinge seat on the T-bar, the T-bar is slidably mounted on a slide rail on the cylindrical shell, two long rods are fixedly welded on the T-bar, the long rod is slidably connected to the circular hole of the extension plate on the cylindrical shell, the compression spring is mounted on the long rod, one end of the compression spring contacts the extension plate on the cylindrical shell, and the other end of the compression spring contacts the T-bar; the rotating shaft of the cam is rotatably mounted in the circular hole on the cylindrical shell, and the cam contacts the T-bar.

[0007] Preferably, the driving assembly comprises: a bevel gear, a gear plate, a submersible motor I, and an upper bracket; the bevel gear is fixedly mounted on the rotating shaft of the cam, the bevel gear is meshed with the outer ring teeth of the gear plate, the gear plate is rotatably mounted on the circular groove on the inner wall of the cylindrical shell, and the inner ring teeth of the gear plate are meshed with the motor gear of the submersible motor I, the submersible motor I is fastened to the upper bracket by bolts, and the upper bracket is fixedly mounted on the inner wall of the cylindrical shell.

[0008] Preferably, the automatic telescopic cleaning mechanism comprises: an electric push rod, a sleeve, a lower bracket, a measuring chamber, a measuring element and a cleaning assembly; the electric push rod is fixedly mounted on the upper bracket, the piston rod of the electric push rod is fixedly connected to the middle of the upper end of the sleeve, the lower end of the sleeve is fixedly welded to the upper end of the measuring chamber, and the sleeve is slidably mounted on the lower bracket, and the lower bracket is fixedly mounted on the inner wall of the cylindrical outer shell.

[0009] Preferably, the cleaning assembly comprises: a gear ring, a submersible motor II, a telescopic rod, and a scraper ring; the gear ring is rotatably mounted in a circular groove on the inner wall of the cylindrical shell, the inner ring teeth of the gear ring are meshed with the motor gear of the submersible motor II, and the submersible motor II is fastened to the lower bracket by bolts; a plurality of telescopic rods are fixedly welded to the lower end of the gear ring, the telescopic rods are slidably mounted in the circular holes on the scraper ring, and the scraper ring is rotatably mounted in the circular groove on the outside of the measuring cavity.

[0010] Preferably, the measuring element pressure sensor is fixedly installed in the sleeve, and the lower end of the pressure sensor is in the measuring cavity.

[0011] Preferably, the legs are arranged in three groups with the cylindrical shell as the center.

[0012] Preferably, the gear ring is made of stainless steel.

[0013] Preferably, the measuring cavity is provided with a plurality of evenly arranged through holes.

[0014] The beneficial effects of the present invention compared with the prior art are:

[0015] (1) When the present invention is in use, after descending to a specified position in a geothermal well, the device can be fixed to keep the device stable, thereby ensuring the accuracy of the measurement. In addition, the legs of the present invention can automatically adapt to the unfolding angle according to the inner wall diameter of the geothermal well, thereby achieving better support for well walls of different diameters.

[0016] (2) The pressure sensor of the present invention is installed in the measuring cavity, which can not only protect the pressure sensor and prevent the flow of impurities in the water from causing collisions with the pressure sensor and thus causing damage to the pressure sensor, but also the scraper ring on the outer wall of the measuring cavity can rotate to clean up the impurities on the outer wall of the measuring cavity in real time, thereby preventing the through holes on the measuring cavity from being blocked and causing inaccurate measurements.

[0017] (3) After the device is fixed in the well, when the water level drops, the pressure sensor fixed in the sleeve can follow the sleeve to drop, so that the pressure sensor re-enters the water and continues to measure the change in water level without manually lowering the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an isometric view of the overall structure of the present invention in a state where the legs are combined.

[0019] Figure 2 It is an isometric view of the overall structure of the present invention with its legs deployed.

[0020] Figure 3 It is a top view of the overall structure of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the adaptive supporting and fixing mechanism of the present invention.

[0022] Figure 5 It is an enlarged view of point A of the adaptive supporting and fixing mechanism of the present invention.

[0023] Figure 6 It is a diagram of the internal structure of the adaptive supporting and fixing mechanism of the present invention.

[0024] Figure 7 It is a structural diagram of the T-bar of the present invention.

[0025] Figure 8 It is a diagram of the internal structure of the automatic telescopic cleaning mechanism of the present invention.

[0026] Fig. 9 It is a structural diagram of the scraper ring of the present invention.

[0027] Fig.10 It is a position structure diagram of the pressure sensor of the present invention.

[0028] Figure numbers: 1. Cylindrical shell; 2. Rope; 3. Outrigger; 4. Outer bracket; 5. Connecting rod; 6. T-bar; 7. Compression spring; 8. Long rod; 9. Cam; 10. Bevel gear; 11. Gear plate; 12. Submersible motor I; 13. Upper bracket; 14. Electric push rod; 15. Sleeve; 16. Lower bracket; 17. Measuring chamber; 18. Gear ring; 19. Submersible motor II; 20. Telescopic rod; 21. Scraper ring; 22. Pressure sensor. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use. They are only for the convenience of describing the simplified description of the present invention patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention patent. In addition, spatially relative terms, such as "below", "below", "below", "above", "above", etc., may be used in the text for the convenience of description to describe the relationship of an element or feature relative to other elements or features as shown in the figure. Spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptors used in the text may also be interpreted accordingly.

[0031] Implementation example Figure 1-Figure 10 As shown, a device for mapping water level in a geothermal well includes an adaptive support and fixing mechanism and an automatic telescopic cleaning mechanism;

[0032] In an optional implementation manner of the embodiment of the present invention, as Figure 4 , Figure 5 , Figure 7 As shown, the adaptive support and fixing mechanism includes: a cylindrical shell 1, a rope 2, a leg 3, an outer bracket 4, a connecting rod 5, a T-bar 6, a compression spring 7, a long rod 8, a cam 9 and a driving assembly; the lower end of the rope 2 is fixedly installed at the middle of the upper end of the cylindrical shell 1; the outer bracket 4 is fixedly welded on the plane outside the cylindrical shell 1, one end of the leg 3 is rotatably installed on the rotating shaft of the outer bracket 4, a slot is provided in the middle of the leg 3, a short shaft is provided in the slot, the short shaft is rotatably connected to one end of the connecting rod 5, and the other end of the connecting rod 5 is rotatably installed on the hinge on the T-bar 6 On the seat, the T-bar 6 is slidably installed on the slide rail on the cylindrical shell 1, two long bars 8 are fixedly welded on the T-bar 6, the long bar 8 is slidably connected with the circular hole of the extension plate on the cylindrical shell 1, and the compression spring 7 is installed on the long bar 8. One end of the compression spring 7 contacts the extension plate on the cylindrical shell 1, and the other end of the compression spring 7 contacts the T-bar 6. The compression spring 7 generates elastic force, which serves to always squeeze the T-bar 6 to have a tendency to move toward the cam 9; the rotating shaft of the cam 9 is rotatably installed in the circular hole on the cylindrical shell 1, and the cam 9 contacts the T-bar 6.

[0033] In an optional implementation manner of the embodiment of the present invention, as Figure 6 As shown, the driving assembly includes: a bevel gear 10, a gear plate 11, a submersible motor I 12, and an upper bracket 13; the bevel gear 10 is fixedly mounted on the rotating shaft of the cam 9, the bevel gear 10 is meshed with the outer ring teeth of the gear plate 11, the gear plate 11 is rotatably mounted on the annular groove on the inner wall of the cylindrical shell 1, and the inner ring teeth of the gear plate 11 are meshed with the motor gear of the submersible motor I 12, the submersible motor I 12 is fastened to the upper bracket 13 by bolts, and the upper bracket 13 is fixedly mounted on the inner wall of the cylindrical shell 1.

[0034] In an optional implementation manner of the embodiment of the present invention, as Figure 8 , Fig.10 As shown, the automatic telescopic cleaning mechanism includes: an electric push rod 14, a sleeve 15, a lower bracket 16, a measuring chamber 17, a measuring element and a cleaning assembly; the electric push rod 14 is fixedly mounted on the upper bracket 13, the piston rod of the electric push rod 14 is fixedly connected to the middle of the upper end of the sleeve 15, the lower end of the sleeve 15 is fixedly welded to the upper end of the measuring chamber 17, and the sleeve 15 is slidably mounted on the lower bracket 16, and the lower bracket 16 is fixedly mounted on the inner wall of the cylindrical shell 1.

[0035] In an optional implementation manner of the embodiment of the present invention, as Figure 8 , Fig. 9As shown, the cleaning assembly includes: a ring gear 18, a submersible motor II 19, a telescopic rod 20, and a scraper ring 21; the ring gear 18 is rotatably installed in the circular groove on the inner wall of the cylindrical shell 1, and the inner ring teeth of the ring gear 18 are meshed with the motor gear of the submersible motor II 19, and the submersible motor II 19 is fastened to the lower bracket 16 by bolts; a plurality of telescopic rods 20 are fixedly welded to the lower end of the ring gear 18, and the telescopic rods 20 are slidably installed in the circular holes on the scraper ring 21, and the scraper ring 21 is rotatably installed in the circular groove outside the measuring cavity 17.

[0036] In an optional implementation manner of the embodiment of the present invention, as Fig.10 As shown, the measuring element pressure sensor 22 is fixedly installed in the sleeve 15, and the lower end of the pressure sensor 22 is located in the measuring cavity 17, and can measure the water pressure in the measuring cavity 17, thereby calculating the water level.

[0037] In an optional implementation manner of the embodiment of the present invention, as Figure 1 As shown, the legs 3 are arranged in three groups with the cylindrical shell 1 as the center, so as to achieve a balanced state.

[0038] In an optional implementation manner of the embodiment of the present invention, as Figure 6 , Figure 8 As shown, the bevel gear 10, the gear plate 11 and the gear ring 18 are made of stainless steel.

[0039] In an optional implementation manner of the embodiment of the present invention, as Figure 8 As shown, the measuring cavity 17 is provided with a plurality of evenly arranged through holes, which allow water to enter and block impurities.

[0040] Working principle: When the present invention is in use, it can fix the equipment after descending to the specified position of the geothermal well, so that the equipment remains stable, thereby ensuring the accuracy of measurement, and the support legs 3 of the present invention can automatically adapt to the unfolding angle according to the inner wall diameter of the geothermal well, so as to achieve better support for well walls of different diameters; the pressure sensor 22 of the present invention is installed in the measuring cavity 17, which can not only protect the pressure sensor 22, but also prevent the flow of impurities in the water from causing collisions with the pressure sensor 22 and causing damage to the pressure sensor 22, and the scraper ring 21 on the outer wall of the measuring cavity 17 can rotate to clean up the impurities on the outer wall of the measuring cavity 17 in real time, to prevent the through holes on the measuring cavity 17 from being blocked and causing inaccurate measurements, and when the equipment is fixed in the well, when the water level drops, the pressure sensor 22 fixed in the sleeve 15 can follow the sleeve 15 to drop, so that the pressure sensor 22 re-enters the water, thereby continuing to measure the change in water level, without the need to manually lower the entire device for adjustment.

[0041] When the present invention is in use, firstly, the pressure sensor 22 is installed in the sleeve 15 of the equipment, and then the equipment is slowly placed in the geothermal well through the rope 2. When the equipment enters the water surface for a certain distance, the lowering is stopped, and then the submersible motor I12 is started, driving the gear plate 11 to rotate, thereby causing the gear plate 11 to drive the bevel gear 10 to rotate, and the bevel gear 10 drives the cam 9 to rotate. The cam 9 squeezes the T-shaped rods 6 at the upper and lower ends, causing the T-shaped rods 6 at the upper and lower ends to move upward and downward respectively, and then drives the supporting legs 3 to unfold through the connecting rod 5 until the supporting legs 3 touch the inner wall of the geothermal well and stop, thereby fixing the equipment; the pressure sensor 22 measures the current water level pressure, thereby calculating the water level value, and transmitting the data to the receiving end outside the well. Since the water level in the well changes, when the water level drops, the pressure sensor 22 may be exposed to the water surface and unable to measure. When the pressure sensor 22 is exposed to the water surface, in order to continue measuring, the electric push rod 14 is started, driving the sleeve 15 to move downward, thereby driving the pressure sensor 22 to move downward and re-enter the water to achieve continuous monitoring and measurement of water level changes; during the measurement process, various impurities in the water will accumulate on the outer wall of the measuring cavity 17, thereby blocking the through hole on the measuring cavity 17. At this time, the submersible motor II 19 will start regularly, driving the gear ring 18 to rotate, thereby driving the scraper ring 21 to rotate through the telescopic rod 20, and the scraper ring 21 will scrape off the impurities adhered to the outer wall of the measuring cavity 17 to keep the through hole on the measuring cavity 17 unobstructed.

Claims

1. A device for measuring and mapping water levels in geothermal wells, characterized in that: The invention comprises an adaptive support fixing mechanism and an automatic telescopic cleaning mechanism; the adaptive support fixing mechanism comprises: a cylindrical shell (1), a rope (2), a leg (3), an outer bracket (4), a connecting rod (5), a T-shaped rod (6), a compression spring (7), a long rod (8), a cam (9) and a driving assembly; the lower end of the rope (2) is fixedly mounted at the middle of the upper end of the cylindrical shell (1); the outer bracket (4) is fixedly welded on the plane outside the cylindrical shell (1); one end of the leg (3) is rotatably mounted on the rotating shaft of the outer bracket (4); a slot is provided in the middle of the leg (3), a short shaft is provided in the slot, and the short shaft and the connecting rod (5) are connected. One end is rotatably connected, the other end of the connecting rod (5) is rotatably mounted on a hinge seat on the T-shaped rod (6), the T-shaped rod (6) is slidably mounted on a slide rail on the cylindrical shell (1), two long rods (8) are fixedly welded on the T-shaped rod (6), the long rods (8) are slidably connected with the circular holes of the extension plate on the cylindrical shell (1), a compression spring (7) is mounted on the long rod (8), one end of the compression spring (7) contacts the extension plate on the cylindrical shell (1), and the other end of the compression spring (7) contacts the T-shaped rod (6); the rotating shaft of the cam (9) is rotatably mounted in the circular hole on the cylindrical shell (1), and the cam (9) contacts the T-shaped rod (6); The driving assembly comprises: a bevel gear (10), a gear plate (11), a submersible motor I (12), and an upper bracket (13); the bevel gear (10) is fixedly mounted on the rotating shaft of the cam (9), the bevel gear (10) is meshed with the outer ring teeth of the gear plate (11), the gear plate (11) is rotatably mounted on the annular groove on the inner wall of the cylindrical shell (1), and the inner ring teeth of the gear plate (11) are meshed with the motor gear of the submersible motor I (12), the submersible motor I (12) is fastened to the upper bracket (13) by bolts, and the upper bracket (13) is fixedly mounted on the inner wall of the cylindrical shell (1); The automatic telescopic cleaning mechanism comprises: an electric push rod (14), a sleeve (15), a lower bracket (16), a measuring chamber (17), a measuring element and a cleaning assembly; the electric push rod (14) is fixedly mounted on the upper bracket (13), the piston rod of the electric push rod (14) is fixedly connected to the middle of the upper end of the sleeve (15), the lower end of the sleeve (15) and the upper end of the measuring chamber (17) are fixedly welded together, and the sleeve (15) is slidably mounted on the lower bracket (16), and the lower bracket (16) is fixedly mounted on the inner wall of the cylindrical shell (1); The cleaning assembly comprises: a gear ring (18), a submersible motor II (19), a telescopic rod (20), and a scraper ring (21); the gear ring (18) is rotatably mounted in a circular groove on the inner wall of a cylindrical shell (1), the inner ring teeth of the gear ring (18) are meshed with the motor gear of the submersible motor II (19), and the submersible motor II (19) is fastened to a lower bracket (16) by bolts; a plurality of telescopic rods (20) are fixedly welded to the lower end of the gear ring (18), the telescopic rods (20) are slidably mounted in circular holes on the scraper ring (21), and the scraper ring (21) is rotatably mounted in a circular groove on the outer side of a measuring cavity (17).

2. A geothermal well water level surveying and mapping device according to claim 1, characterized in that: The measuring element pressure sensor (22) is fixedly installed in the sleeve (15), and the lower end of the pressure sensor (22) is located in the measuring cavity (17).

3. A geothermal well water level surveying and mapping device according to claim 1, characterized in that: The supporting legs (3) are arranged in three groups with the cylindrical shell (1) as the center.

4. A device for measuring and mapping water level in a geothermal well according to claim 1, characterized in that: The gear ring (18) is made of stainless steel.

5. A geothermal well water level surveying and mapping device according to claim 1, characterized in that: The measuring cavity (17) is provided with a plurality of evenly arranged through holes.

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