Geothermal detection device for medium-deep geothermal hole

Abstract

The invention belongs to the technical field of geothermal detection, and particularly relates to a geothermal detection device for medium-deep geothermal holes, which comprises a mounting frame, a control cabinet is fixedly connected to the upper side wall of the mounting frame, and a screw rod driving mechanism is fixedly connected to the upper side wall of the mounting frame. When the detection assembly is used for detecting the middle-deep layer geothermal energy, the geothermal energy can be automatically detected while the drill bit drills holes, the drill bit does not need to stop running, and then the geothermal energy is detected, so that the time for frequently starting, retracting and releasing the geothermal detection head is saved, the detection work efficiency is guaranteed, and the detection efficiency is improved. And when the drill bit assembly is used for a long time, the main cutting edge on the surface is abraded, and the working performance of the drill bit assembly is affected, the standby cutting edge can be automatically moved to the set position to assist the main cutting edge in drilling work, and the drill bit assembly does not need to be taken out from the deep underground position immediately.

Description

Technical Field

[0001] The present invention belongs to the technical field of geothermal exploration, and particularly relates to a geothermal exploration device for medium-deep geothermal wells. Background Art

[0002] Geothermal energy is natural heat energy extracted from the earth's crust. This energy comes from the molten rock inside the earth and exists in the form of heat. During the development of geothermal energy, it is necessary to detect the locations where geothermal energy exists. Currently, when detecting geothermal energy, the drilling method is often used. For example, a geothermal exploration device proposed in Patent Publication No. CN118706507A.

[0003] Currently, most geothermal exploration devices need to install the geothermal exploration head above the drill bit. In actual operations, when the drill bit drills to a predetermined depth, the drill bit must first stop rotating, and then the geothermal exploration head is extended for geothermal energy detection; after completing the detection of the current area, the exploration head needs to be retracted before continuing to drill and detect the next area. This operation process is cumbersome, and the frequent start-stop and retraction / extension of the exploration head greatly reduce the detection work efficiency; In addition, during the long-term use of the drill bit, the cutting edges on its surface will inevitably wear. Once the wear degree exceeds a certain range, the drill bit needs to be taken out of the borehole for replacement. Especially when the drill bit is in a relatively deep underground position, the frequent removal and replacement of the drill bit are time-consuming and laborious, which not only prolongs the operation cycle but also severely restricts the overall working efficiency of the geothermal exploration device, increasing the exploration cost and time cost.

[0004] Therefore, a geothermal exploration device for medium-deep geothermal wells is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a geothermal exploration device for medium-deep geothermal wells in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A geothermal exploration device for medium-deep geothermal wells includes a mounting frame. A control cabinet is fixedly connected to the upper side wall of the mounting frame. A screw drive mechanism is fixedly connected to the upper side wall of the mounting frame. The output end of the screw drive mechanism is fixedly connected to a lifting plate, and a pressure sensor is provided between the output end of the screw drive mechanism and the lifting plate. A lifting seat is fixedly connected to the left side wall of the lifting plate. The device further includes: The mounting rod is rotatably connected to the side wall of the lifting seat. The mounting rod is a hollow structure. The upper port of the mounting rod is rotatably connected to a liquid inlet pipe through a sealed bearing. The drilling fluid is transported into the mounting rod through the liquid inlet pipe. The upper side wall of the lifting seat is fixedly connected to a driving motor. The output end of the driving motor is transmission-connected to the mounting rod through a bevel gear transmission assembly. The lower end of the mounting rod is threadedly connected to a plurality of drill rods. The plurality of drill rods are threadedly connected to each other. The lower end of the drill rod at the lowest side is threadedly connected to a drill bit assembly. A detection assembly, arranged inside the lowermost drill pipe, for geothermal detection; The analysis component is arranged on the upper side wall of the mounting frame and is used for analyzing the vibration of the drill pipe.

[0007] Preferably, the drill bit assembly includes a drill bit seat threadedly connected to the lowermost drill rod, the lower side wall of the drill bit seat is fixedly connected to a plurality of main cutting edges, the drill bit seat and the rod walls of the plurality of drill rods are provided with mutually connected liquid inlet chambers, and the side wall of the drill bit seat is provided with a nozzle interconnected with the liquid inlet chamber, the liquid inlet chamber is provided with a first control valve located inside the drill bit seat, the drill bit seat is provided with a piston chamber, the longitudinal section of the piston chamber is an inverted T-shaped structure, the lower side wall of the piston chamber is fixedly connected to the piston seat by a spring, the lower side wall of the piston chamber is provided with a plurality of inclined chambers, an inclined rod is movably inserted in the inclined chamber, the lower end of the inclined rod extends out of the inclined chamber and is fixedly connected to a spare cutting edge, the upper end of the inclined rod is fixedly connected to a piston plate, the liquid inlet chamber and the piston chamber are fixedly connected by the same cross tube, and a second control valve is provided in the cross tube.

[0008] Preferably, the detection component includes a detection chamber opened inside the lowermost drill rod, the longitudinal section of the detection chamber is an inverted U-shaped structure, a temperature sensor is inlaid inside the detection chamber, the temperature sensor is electrically connected to the control cabinet through a conductive slip ring mechanism, an annular groove is opened on the outside of the lowermost drill rod, and a wear-resistant rubber ring is fixedly connected to the inner wall of the annular groove, the liquid inlet chamber and the annular groove are fixedly connected by a same first short tube, a first regulating valve is provided in the first short tube, a hydraulic sensor is provided inside the annular groove, the hydraulic sensor is electrically connected to the control cabinet, the upper port of the detection chamber is fixedly connected to an upper filter, the lower port of the detection chamber is connected to a lower filter through a sensing component, the detection chamber and the liquid inlet chamber are fixedly connected by a same second short tube, a second regulating valve is provided in the second short tube, and a third regulating valve is provided in the detection chamber.

[0009] Preferably, the induction assembly includes two induction cylinders, the two induction cylinders are respectively fixedly connected to the upper and lower inner walls of the lower port of the detection cavity, the right side walls of the two induction cylinders are both movably inserted with induction pins, the right ends of the two induction pins are both connected to the lower filter screen, the left side walls of the two induction cylinders are both fixedly communicated with telescopic air bags, the left end of the induction pin is located inside the induction cylinder and is fixedly connected to a moving plate, and the same spring is fixedly connected between the moving plate and the induction cylinder. A conductive block is fixedly connected to the side wall of the lower moving plate, the conductive block is electrically connected to an external power supply, and a conductive plate is embedded in the inner wall of the lower induction cylinder, and the conductive plate is electrically connected to the control cabinet.

[0010] Preferably, the analysis assembly includes a vertical plate fixedly connected to the upper side wall of the mounting frame. A first electric push rod is fixedly connected to the left side wall of the vertical plate. The moving end of the first electric push rod passes through the vertical plate and is fixedly connected to a U-shaped frame. Second electric push rods are fixedly connected to the front and rear side walls of the U-shaped frame. The moving ends of the two second electric push rods are both fixedly connected to arc-shaped plates. A plurality of telescopic cylinders are fixedly connected to the inner walls of the two arc-shaped plates. A telescopic frame is movably inserted into the telescopic cylinder. A ball is fixedly connected to the end of the telescopic frame extending out of the telescopic cylinder. The same spring is fixedly connected between the end of the telescopic frame located inside the telescopic cylinder and the telescopic cylinder. A conductive frame is fixedly connected to the end of one of the telescopic frames located inside the telescopic cylinder, and a resistance plate is embedded in the inner wall of the telescopic cylinder that matches the telescopic frame. The end of the resistance plate away from the telescopic frame is electrically connected to the control cabinet.

[0011] Preferably, a connecting ring is fixedly sleeved on the outer wall of the induction pin, and a protective air bag sleeved on the induction pin is fixedly connected between the connecting ring and the induction cylinder.

[0012] Preferably, hydraulic cylinders are fixedly connected to the front and rear sides of the lower side wall of the mounting frame, and nail plates are fixedly connected to the moving ends of the hydraulic cylinders.

[0013] Preferably, a protective cover covering the outside of the driving motor is fixedly connected to the upper side wall of the lifting seat. The protective cover is made of aluminum alloy, and a plurality of heat dissipation plates are fixedly connected to the side wall of the protective cover.

[0014] Compared with the existing technology, the advantages of a medium-deep geothermal well geothermal exploration device are as follows: 1. By setting the detection assembly, when using the detection component to detect medium-deep geothermal energy, the geothermal energy can be automatically detected while the drill bit is drilling, without stopping the operation of the drill bit and then detecting the geothermal energy, thus omitting the time for frequently starting and retracting the geothermal exploration head and ensuring the efficiency of the detection work.

[0015] 2. With the provided drill bit assembly, when the main cutting edge on the surface wears out after long-term use of the drill bit assembly, affecting the working performance of the drill bit assembly, the backup cutting edge can be automatically moved to the set position to assist the main cutting edge in drilling work, without the need to immediately remove the drill bit assembly from the deep underground, reducing the exploration cost and time cost of the detection device.

[0016] 3. With the provided analysis assembly, during the operation of the detection device, it can improve the stability of the drill pipe during operation. At the same time, when abnormal vibration occurs in the drill pipe, it is convenient for the control cabinet to analyze the abnormal vibration, thereby promptly reminding the operator to perform corresponding operations, further ensuring the working performance of the detection assembly. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a medium-deep geothermal hole geothermal detection device provided by the present invention; Figure 2 is a schematic structural diagram of a detection assembly in a medium-deep geothermal hole geothermal detection device provided by the present invention; Figure 3 is a schematic structural diagram of a drill bit assembly in a medium-deep geothermal hole geothermal detection device provided by the present invention; Figure 4 is a schematic structural diagram of an induction assembly in a medium-deep geothermal hole geothermal detection device provided by the present invention; Figure 5 is a top view of a U-shaped frame in a medium-deep geothermal hole geothermal detection device provided by the present invention; Figure 6 is a schematic internal structure diagram of a telescopic cylinder in a medium-deep geothermal hole geothermal detection device provided by the present invention; Figure 7 is a schematic surface structure diagram of a lifting seat in a medium-deep geothermal hole geothermal detection device provided by the present invention.

[0018] In the figure: 1 mounting bracket, 2 control cabinet, 3 lead screw drive mechanism, 4 lifting plate, 5 lifting seat, 6 mounting rod, 7 liquid inlet pipe, 8 drive motor, 9 drill pipe, 10 drill bit assembly, 101 drill bit seat, 102 main cutting edge, 11 liquid inlet cavity, 12 first control valve, 13 piston cavity, 14 piston seat, 15 inclined cavity, 16 inclined rod, 17 spare cutting edge, 18 piston plate, 19 horizontal pipe, 20 second control valve, 21 detection assembly, 211 detection cavity, 212 temperature sensor, 22 annular groove, 23 wear-resistant rubber ring, 24 first short pipe, 25 first regulating valve, 26 hydraulic sensor, 27 upper filter screen, 28 lower filter screen, 29 second short pipe, 30 second regulating valve, 31 third regulating valve, 32 induction assembly, 321 induction cylinder, 322 induction pin, 33 telescopic airbag, 34 moving plate, 35 conductive block, 36 conductive plate, 37 analysis assembly, 371 vertical plate, 372 first electric push rod, 38 U-shaped frame, 39 second electric push rod, 40 arc-shaped plate, 41 telescopic cylinder, 42 telescopic frame, 43 ball, 44 conductive frame, 45 resistance plate, 46 connecting ring, 47 protective airbag, 48 hydraulic cylinder, 49 nail plate, 50 protective cover, 51 heat dissipation plate. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] As Figures 1 - 7 shown, a geothermal exploration device for medium-deep geothermal holes includes a mounting bracket 1. A control cabinet 2 is fixedly connected to the upper side wall of the mounting bracket 1. A lead screw drive mechanism 3 is fixedly connected to the upper side wall of the mounting bracket 1. The output end of the lead screw drive mechanism 3 is fixedly connected to a lifting plate 4. A pressure sensor is provided between the output end of the lead screw drive mechanism 3 and the lifting plate 4. A lifting seat 5 is fixedly connected to the left side wall of the lifting plate 4. It further includes: The mounting rod 6 is rotatably connected to the side wall of the lifting seat 5. The mounting rod 6 is a hollow structure. The upper port of the mounting rod 6 is rotatably connected to a liquid inlet pipe 7 through a sealed bearing. The drilling fluid is transported to the mounting rod 6 through the liquid inlet pipe 7. The upper side wall of the lifting seat 5 is fixedly connected to a driving motor 8. The upper side wall of the lifting seat 5 is fixedly connected to a protective cover 50 arranged on the outside of the driving motor 8. The protective cover 50 is made of aluminum alloy, and the side wall of the protective cover 50 is fixedly connected to a plurality of heat dissipation plates 51, which can protect the driving motor 8. The output end of the driving motor 8 is transmission-connected to the mounting rod 6 through a bevel gear transmission assembly. The lower end of the mounting rod 6 is threadedly connected to a plurality of drill rods 9, and the plurality of drill rods 9 are threadedly connected to each other. The lower end of the drill rod 9 located at the lower side is threadedly connected to a drill bit assembly 10, and the drill bit assembly 10 includes a drill bit seat 101 threadedly connected to the lowermost drill rod 9, and the lower side wall of the drill bit seat 101 is fixedly connected to a plurality of The main cutting edge 102, the drill bit seat 101 and the rod walls of the plurality of drill rods 9 are all provided with a liquid inlet chamber 11 which is interconnected, and the side wall of the drill bit seat 101 is provided with a nozzle which is interconnected with the liquid inlet chamber 11, and the liquid inlet chamber 11 is provided with a first control valve 12 which is located inside the drill bit seat 101, and the inside of the drill bit seat 101 is provided with a piston chamber 13, and the longitudinal section of the piston chamber 13 is an inverted T-shaped structure, and the lower side wall of the piston chamber 13 is fixedly connected with a piston seat 14 through a spring, and the lower side wall of the piston chamber 13 is provided with a plurality of inclined chambers 15, and an inclined rod 16 is movably inserted in the inclined chamber 15, and the lower end of the inclined rod 16 extends out of the inclined chamber 15 and is fixedly connected with a spare cutting edge 17, and the upper end of the inclined rod 16 is fixedly connected with a piston plate 18, and the liquid inlet chamber 11 and the piston chamber 13 are fixedly connected with the same transverse tube 19, and the transverse tube 19 is provided with a second control valve 20, and the cutting performance of the drill bit assembly 10 can be guaranteed by this assembly; The detection assembly 21 is arranged inside the lowermost drill rod 9 and is used for geothermal detection. The detection assembly 21 includes a detection chamber 211 opened inside the lowermost drill rod 9. The longitudinal section of the detection chamber 211 is an inverted U-shaped structure. A temperature sensor 212 is embedded inside the detection chamber 211. The temperature sensor 212 is electrically connected to the control cabinet 2 through a conductive slip ring mechanism. An annular groove 22 is opened outside the lowermost drill rod 9, and a wear-resistant rubber ring 23 is fixedly connected to the inner wall of the annular groove 22. The same first short pipe is fixedly connected between the liquid inlet chamber 11 and the annular groove 22. 24, a first regulating valve 25 is arranged in the first short tube 24, a hydraulic sensor 26 is arranged inside the annular groove 22, the hydraulic sensor 26 is electrically connected to the control cabinet 2, an upper port of the detection chamber 211 is fixedly connected to an upper filter screen 27, a lower port of the detection chamber 211 is connected to a lower filter screen 28 through a sensing component 32, a second short tube 29 is fixedly connected between the detection chamber 211 and the liquid inlet chamber 11, a second regulating valve 30 is arranged in the second short tube 29, a third regulating valve 31 is arranged in the detection chamber 211, and geothermal energy can be detected through this component; The analysis component 37 is arranged on the upper side wall of the mounting frame 1 and is used for analyzing the vibration condition of the drill pipe 9. The analysis component 37 includes a vertical plate 371 fixedly connected to the upper side wall of the mounting frame 1. A first electric push rod 372 is fixedly connected to the left side wall of the vertical plate 371. The moving end of the first electric push rod 372 passes through the vertical plate 371 and is fixedly connected with a U-shaped frame 38. Second electric push rods 39 are fixedly connected to the front and rear side walls of the U-shaped frame 38 respectively. The moving ends of the two second electric push rods 39 are both fixedly connected with arc-shaped plates 40. A plurality of telescopic cylinders 41 are fixedly connected to the inner walls of the two arc-shaped plates 40. A telescopic frame 42 is movably inserted into the telescopic cylinder 41. One end of the telescopic frame 42 extending out of the telescopic cylinder 41 is fixedly connected with a ball 43. A spring is fixedly connected between one end of the telescopic frame 42 located in the telescopic cylinder 41 and the telescopic cylinder 41. A conductive frame 44 is fixedly connected to one end of the telescopic frame 42 located in the telescopic cylinder 41. A resistance plate 45 is embedded in the inner wall of the telescopic cylinder 41 matching the telescopic frame 42. One end of the resistance plate 45 far from the telescopic frame 42 is electrically connected to the control cabinet 2, and can analyze the vibration condition of the drill pipe 9.

[0021] The induction component 32 includes two induction cylinders 321 which are respectively fixedly connected to the upper and lower inner walls of the lower port of the detection cavity 211. Induction pins 322 are movably inserted into the right side walls of the two induction cylinders 321. The right ends of the two induction pins 322 are both connected to the lower filter screen 28. Telescopic air bags 33 are fixedly communicated with the left side walls of the two induction cylinders 321 respectively. The left end of the induction pin 322 is located in the induction cylinder 321 and is fixedly connected with a moving plate 34. A spring is fixedly connected between the moving plate 34 and the induction cylinder 321. A conductive block 35 is fixedly connected to the side wall of the lower moving plate 34. The conductive block 35 is electrically connected to an external power supply. A conductive plate 36 is embedded in the inner wall of the lower induction cylinder 321. The conductive plate 36 is electrically connected to the control cabinet 2. Through this component, the blockage condition of the lower filter screen 28 can be detected.

[0022] A connecting ring 46 is fixedly sleeved on the outer wall of the induction pin 322. A protective air bag 47 sleeved on the induction pin 322 is fixedly connected between the connecting ring 46 and the induction cylinder 321, which can prevent impurities from entering the induction cylinder 321.

[0023] The operating principle of the present invention is described as follows: Move the detection device to a specified location, and then the operator transmits an electrical signal to the inside of the control cabinet 2 through the operation screen on the surface of the control cabinet 2. After receiving the electrical signal, the control cabinet 2 will control the first electric push rod 372 to work. The first electric push rod 372 drives the U-shaped frame 38 to move to the right to a set position. Then, the control cabinet 2 controls the two second electric push rods 39 to work. The two second electric push rods 39 will drive the two arc-shaped plates 40 to move towards each other. The arc-shaped plates 40 will drive the telescopic cylinders 41, telescopic frames 42 and balls 43 on the surface to move towards the drill rod 9, so that the balls 43 are in contact with the surface of the drill rod 9. Then, the control cabinet 2 controls the screw drive mechanism 3 to work (the screw drive mechanism 3 consists of a drive box, a threaded rod, a threaded barrel and a motor. The motor drives the threaded rod to rotate, and the threaded rod drives the threaded barrel to move. The threaded barrel drives the lifting plate 4 to move through the bracket on the surface). The lifting plate 4 will drive the lifting seat 5, the mounting rod 6, the drill rod 9 and the drill bit assembly 10 to move downward together. And the control cabinet 2 will also control the drive motor 8 to work. The drive motor 8 controls the mounting rod 6, the drill rod 9 and the drill bit assembly 10 to rotate together through the bevel gear transmission assembly, so as to perform drilling on the ground. At the same time, the control cabinet 2 will also control the external pump assembly to work, and use the external pump assembly to transport the drilling fluid to the mounting rod 6 through the liquid inlet pipe 7. The mounting rod 6 is of a hollow structure, and the drilling fluid will be transported to the liquid inlet cavity 11 inside the drill rod 9 and the drill bit seat 101 through the mounting rod 6, and will be sprayed out through the nozzles on the lower side of the drill bit seat 101; When the drill bit seat 101 drills to a set depth, during the downward movement of the drill bit seat 101, the control cabinet 2 will control the first control valve 12 to close and control the first regulating valve 25 to open, so that part of the drilling fluid is transported to the annular groove 22 through the first short pipe 24, causing the wear-resistant rubber ring 23 to expand. And after the control cabinet 2 detects through the hydraulic sensor 26 that the pressure inside the wear-resistant rubber ring 23 reaches the set threshold value (2 kPa), it will control the first control valve 12 to open and control the first regulating valve 25 to close. After the drilling fluid is sprayed out from the drill bit seat 101, it will be discharged to the ground through the gap between the drill rod 9 and the drill hole. When the wear-resistant rubber ring 23 expands, the gap between the drill rod 9 and the drill hole will shrink, and part of the drilling fluid will pass through the lower filter screen 28 and enter the detection cavity 211 and be discharged through the upper port of the detection cavity 211. When the drilling fluid is discharged from below the drill bit seat 101, the geothermal energy is used to heat up the drilling fluid. When the drilling fluid passes through the detection cavity 211, the temperature sensor 212 inside the detection cavity 211 can be used to detect the temperature of the drilling fluid, so as to detect the geothermal energy in this area; When there is too much impurity attached to the surface of the lower filter screen 28, the permeability of the lower filter screen 28 will decrease. When the drilling fluid passes through the lower filter screen 28, the resistance it encounters will increase. Under the action of the resistance, the lower filter screen 28 will drive the sensing pin 322, the moving plate 34 and the conductive block 35 to move leftward (the lower filter screen 28 is slidably arranged in the detection cavity 211 and fits with the inner wall of the detection cavity 211). During the movement of the conductive block 35, it will contact the conductive plate 36. The conductive block 35 is electrically connected to the external power supply, and the conductive plate 36 is electrically connected to the control cabinet 2. When they contact, a current signal will be sent to the control cabinet 2. After receiving this current signal, the control cabinet 2 will control the first control valve 12 and the third regulating valve 31 to close and control the second regulating valve 30 to open for ten seconds, so that the drilling fluid in the liquid inlet cavity 11 is transported through the second short pipe 29 to the lower part of the third regulating valve 31 in the detection cavity 211, and the drilling fluid flushes from the left side of the lower filter screen 28. The conveying pressure of the drilling fluid is 10 - 40 MPa, which can wash away the impurities attached to the right side of the lower filter screen 28; When the main cutting edge 102 is severely worn due to long-term use, the cutting ability of the drill bit seat 101 will be greatly reduced, and the resistance of the drill bit seat 101 and the drill pipe 9 moving downward will increase. The control cabinet 2 can detect this situation through the pressure sensor above the lifting plate 4, and the drill pipe 9 will also vibrate continuously (wear causes the center of gravity of the drill bit seat 101 to shift and become unbalanced). The vibrating drill pipe 9 will reciprocally push the ball 43, and the ball 43 will drive the conductive frame 44 to reciprocally move on the surface of the resistance plate 45 through the telescopic frame 42. The conductive frame 44 is electrically connected to the external power supply, and one end of the resistance plate 45 away from the telescopic frame 42 is electrically connected to the control cabinet 2. Therefore, when the conductive frame 44 reciprocally moves on the resistance plate 45, a continuously changing electrical signal will be sent to the control cabinet 2. After detecting these two situations, the control cabinet 2 indicates that the main cutting edge 102 is worn. The control cabinet 2 will control the driving motor 8 and the lead screw driving mechanism 3 to stop working simultaneously, control the first control valve 12 to close, and control the second control valve 20 to open for ten seconds. The drilling fluid in the liquid inlet cavity 11 will be transported through the horizontal pipe 19 to the upper part of the piston seat 14 in the piston cavity 13, causing the piston seat 14 to move downward. The piston seat 14 will overcome the pressure of the spring below and squeeze the hydraulic oil below. The hydraulic oil is used to squeeze the piston plate 18, and the piston plate 18 will drive the spare cutting edge 17 downward and laterally to the set position through the inclined rod 16, thereby enhancing the cutting ability of the drill bit seat 101, without the need to immediately remove the drill bit assembly 10 from the deep underground, reducing the exploration cost and time cost of the detection device; When the drill pipe 9 causes continuous vibration due to deformation, referring to the above principle, the conductive frame 44 will continuously contact the resistance plate 45, but the pressure sensor does not detect an increase in the resistance received by the drill pipe 9. After the control cabinet 2 detects this situation, it will transmit this signal to the receiving end in the monitoring room through the wireless communication module inside the control cabinet 2. After the operator discovers this situation, they need to control the detection work to stop in time and detect the shape of the drill pipe 9. When the control cabinet 2 detects intermittent vibration of the drill pipe 9 due to equipment failure or loose connection, it will also transmit this signal to the receiving end in the monitoring room through the internal wireless communication module to remind the operator to detect the connection stability of the drill pipe 9 in time or repair the faulty equipment (for example, if the drive motor 8, transmission device, etc. fail, it may cause unstable power output and intermittent vibration of the drill pipe 9).

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A geothermal detection device for medium-deep geothermal holes, comprising a mounting frame (1), a control cabinet (2) is fixedly connected to the upper side wall of the mounting frame (1), a screw rod driving mechanism (3) is fixedly connected to the upper side wall of the mounting frame (1), an elevator plate (4) is fixedly connected to the output end of the screw rod driving mechanism (3), and a pressure sensor is arranged between the output end of the screw rod driving mechanism (3) and the elevator plate (4), the left side wall of the elevator plate (4) is fixedly connected to an elevator seat (5), characterized in that, Also includes: A mounting rod (6) is rotatably connected to the side wall of the lifting seat (5); the mounting rod (6) is a hollow structure; an upper end of the mounting rod (6) is rotatably connected to a liquid inlet pipe (7) via a sealed bearing; drilling fluid is transported into the mounting rod (6) via the liquid inlet pipe (7); a driving motor (8) is fixedly connected to the upper side wall of the lifting seat (5); an output end of the driving motor (8) is transmission-connected to the mounting rod (6) via a bevel gear transmission assembly; a plurality of drill rods (9) are threadedly connected to the lower end of the mounting rod (6); the plurality of drill rods (9) are threadedly connected to each other; and a drill bit assembly (10) is threadedly connected to the lower end of the drill rod (9) located at the lowermost side; A detection assembly (21), arranged inside the lowermost drill rod (9), for detecting geothermal heat; An analysis component (37) is arranged on the upper side wall of the mounting frame (1) and is used to analyze the vibration of the drill rod (9).

2. The geothermal exploration device for medium-deep geothermal holes according to claim 1, characterized in that, The drill bit assembly (10) comprises a drill bit seat (101) threadedly connected to the lowermost drill rod (9); a plurality of main cutting edges (102) are fixedly connected to the lower side wall of the drill bit seat (101); the drill bit seat (101) and the rod walls of the plurality of drill rods (9) are both provided with mutually communicating liquid inlet chambers (11); the side wall of the drill bit seat (101) is provided with a nozzle mutually communicating with the liquid inlet chamber (11); a first control valve (12) located inside the drill bit seat (101) is provided in the liquid inlet chamber (11); a piston chamber (13) is provided inside the drill bit seat (101); and the piston chamber (13) is ) has an inverted T-shaped longitudinal section, the lower side wall of the piston chamber (13) is fixedly connected to a piston seat (14) via a spring, the lower side wall of the piston chamber (13) is provided with a plurality of inclined chambers (15), an inclined rod (16) is movably inserted into the inclined chamber (15), the lower end of the inclined rod (16) extends out of the inclined chamber (15) and is fixedly connected to a spare cutting edge (17), the upper end of the inclined rod (16) is fixedly connected to a piston plate (18), the liquid inlet chamber (11) and the piston chamber (13) are fixedly connected by a same transverse tube (19), and a second control valve (20) is provided in the transverse tube (19).

3. The geothermal detection device for medium-deep geothermal wells according to claim 2, wherein, The detection component (21) includes a detection cavity (211) opened inside the lowermost drill pipe (9). The longitudinal section of the detection cavity (211) is an inverted U-shaped structure. A temperature sensor (212) is embedded inside the detection cavity (211). The temperature sensor (212) is electrically connected to the control cabinet (2) through a conductive slip ring mechanism. An annular groove (22) is opened outside the lowermost drill pipe (9), and a wear-resistant rubber ring (23) is fixedly connected to the inner wall of the annular groove (22). The same first short pipe (24) is fixedly connected between the liquid inlet cavity (11) and the annular groove (22). A first regulating valve (25) is arranged inside the first short pipe (24). A hydraulic sensor (26) is arranged inside the annular groove (22). The hydraulic sensor (26) is electrically connected to the control cabinet (2). The upper port of the detection cavity (211) is fixedly connected with an upper filter screen (27). The lower port of the detection cavity (211) is connected with a lower filter screen (28) through an induction component (32). The same second short pipe (29) is fixedly connected between the detection cavity (211) and the liquid inlet cavity (11). A second regulating valve (30) is arranged inside the second short pipe (29). A third regulating valve (31) is arranged inside the detection cavity (211).

4. The geothermal exploration device for medium-deep geothermal holes according to claim 3, characterized in that, The induction component (32) includes two induction cylinders (321). The two induction cylinders (321) are respectively fixedly connected to the upper and lower inner walls of the lower port of the detection cavity (211). The right side walls of the two induction cylinders (321) are both movably inserted with induction pins (322). The right ends of the two induction pins (322) are both connected to the lower filter screen (28). The left side walls of the two induction cylinders (321) are both fixedly communicated with telescopic air bags (33). The left end of the induction pin (322) is located inside the induction cylinder (321) and is fixedly connected with a moving plate (34). The moving plate (34) and the induction cylinder (321) are fixedly connected with the same spring. A conductive block (35) is fixedly connected to the side wall of the lower moving plate (34). The conductive block (35) is electrically connected to an external power supply. A conductive plate (36) is embedded in the inner wall of the lower induction cylinder (321). The conductive plate (36) is electrically connected to the control cabinet (2).

5. The geothermal detection device for medium-deep geothermal holes according to claim 1, characterized in that, The analysis component (37) includes a vertical plate (371) fixedly connected to the upper side wall of the mounting frame (1). A first electric push rod (372) is fixedly connected to the left side wall of the vertical plate (371). The moving end of the first electric push rod (372) passes through the vertical plate (371) and is fixedly connected to a U-shaped frame (38). Second electric push rods (39) are fixedly connected to the front and rear side walls of the U-shaped frame (38). The moving ends of the two second electric push rods (39) are fixedly connected to arc-shaped plates (40). A plurality of telescopic cylinders (41) are fixedly connected to the inner walls of the two arc-shaped plates (40). A telescopic frame (42) is movably inserted into the telescopic cylinder (41). A ball (43) is fixedly connected to the end of the telescopic frame (42) extending out of the telescopic cylinder (41). A spring is fixedly connected between the end of the telescopic frame (42) located inside the telescopic cylinder (41) and the telescopic cylinder (41). A conductive frame (44) is fixedly connected to the end of one of the telescopic frames (42) located inside the telescopic cylinder (41). A resistance plate (45) is embedded in the inner wall of the telescopic cylinder (41) matching the telescopic frame (42). The end of the resistance plate (45) away from the telescopic frame (42) is electrically connected to the control cabinet (2).

6. A medium-deep geothermal well geothermal exploration device according to claim 4, characterized in that, A connecting ring (46) is fixedly sleeved on the outer wall of the induction pin (322). A protective airbag (47) sleeved on the induction pin (322) is fixedly connected between the connecting ring (46) and the induction cylinder (321).

7. The geothermal exploration device for medium-deep geothermal holes according to claim 1, characterized in that, Hydraulic cylinders (48) are fixedly connected to the front and rear sides of the lower side wall of the mounting frame (1). A nail plate (49) is fixedly connected to the moving end of the hydraulic cylinder (48).

8. The geothermal exploration device for medium-deep geothermal wells according to claim 1, wherein, A protective cover (50) covering the outside of the driving motor (8) is fixedly connected to the upper side wall of the lifting seat (5). The protective cover (50) is made of aluminum alloy, and a plurality of heat dissipation plates (51) are fixedly connected to the side wall of the protective cover (50).

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