A geothermal detection device for medium-deep geothermal holes

Abstract

The present invention belongs to the field of geothermal detection technology, and in particular relates to a geothermal detection device for a medium-deep geothermal hole, comprising a mounting frame, an upper side wall of the mounting frame being fixedly connected to a control cabinet, and an upper side wall of the mounting frame being fixedly connected to a screw drive mechanism. When the present invention uses a detection assembly to detect medium-deep geothermal, the geothermal energy can be automatically detected while the drill bit is drilling, without stopping the drill bit, and then the geothermal energy can be detected, thereby eliminating the time for frequently starting and retracting the geothermal detection head, ensuring the efficiency of the detection work, and when the drill bit assembly is used for a long time, causing the main cutting edge on the surface to wear and affecting the working performance of the drill bit assembly, the spare cutting edge can be automatically moved to a set position to assist the main cutting edge in drilling work, without the need to immediately remove the drill bit assembly from deep underground.

Description

Technical Field

[0001] The present invention belongs to the field of geothermal detection technology, and in particular relates to a geothermal detection device for a mid-deep geothermal hole. Background Art

[0002] Geothermal energy is natural heat 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 places where geothermal energy exists. Currently, drilling methods are often used when detecting geothermal energy. For example, a geothermal detection device is proposed in patent publication number CN118706507A.

[0003] Currently, most geothermal detection devices require the geothermal probe to be installed above the drill bit. In actual operation, when the drill bit reaches the predetermined depth, the drill bit must be stopped first, and then the geothermal probe must be extended to detect geothermal energy. After completing the detection of the current area, the probe must be retracted before drilling and detecting the next area. This operation process is cumbersome, and the frequent starting and stopping and retracting and extending of the probe greatly reduces the efficiency of detection work.

[0004] In addition, during long-term use, the cutting edge of the drill bit will inevitably wear out. Once the degree of wear exceeds a certain range, the drill bit needs to be removed from the borehole and replaced. Especially when the drill bit is deep underground, frequent removal and placement of the drill bit is time-consuming and labor-intensive, which not only extends the operation cycle, but also seriously restricts the overall working efficiency of the geothermal detection device, increasing the exploration cost and time cost.

[0005] Therefore, a geothermal detection device for medium-deep geothermal holes is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a geothermal detection device for a mid-deep geothermal hole in order to solve the above problems.

[0007] To achieve the above-mentioned object, the present invention adopts the following technical solutions: a geothermal detection device for a medium-deep geothermal hole, comprising a mounting frame, the upper side wall of which is fixedly connected to a control cabinet, the upper side wall of which is fixedly connected to a screw drive mechanism, 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, the left side wall of the lifting plate is fixedly connected to a lifting seat, and further comprising:

[0008] The mounting rod is rotatably connected to the side wall of the lifting seat. The mounting rod is a hollow structure. The upper end 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 drive motor. The output end of the drive motor is connected to the mounting rod through a bevel gear transmission assembly. The lower end of the mounting rod is threadedly connected to multiple drill rods. The multiple drill rods are all threadedly connected. The lower end of the drill rod located at the lower side is threadedly connected to a drill bit assembly.

[0009] The detection component is set inside the lowermost drill pipe and is used for geothermal detection;

[0010] The analysis component is arranged on the upper side wall of the mounting frame and is used to analyze the vibration of the drill rod.

[0011] 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 transverse tube, and a second control valve is provided in the transverse tube.

[0012] 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, the interior of the detection chamber is inlaid with a temperature sensor, 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 the inner wall of the annular groove is fixedly connected to a wear-resistant rubber ring, the liquid inlet chamber and the annular groove are fixedly connected by a same first short pipe, a first regulating valve is provided in the first short pipe, a hydraulic sensor is provided in 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 an induction component, the detection chamber and the liquid inlet chamber are fixedly connected by a same second short pipe, a second regulating valve is provided in the second short pipe, and a third regulating valve is provided in the detection chamber.

[0013] Preferably, the sensing assembly includes two sensing cylinders, which are respectively fixedly connected to the upper and lower inner walls of the lower port of the detection chamber, and the right sides of the two sensing cylinders are movably connected with sensing pins. The right ends of the two sensing pins are connected to the lower filter screen, and the left sides of the two sensing cylinders are fixedly connected with telescopic air bags. The left ends of the sensing pins are located in the sensing cylinders and are fixedly connected to a movable plate. The same spring is fixedly connected between the movable plate and the sensing cylinder. The side wall of the movable plate on the lower side is fixedly connected with a conductive block, and the conductive block is electrically connected to an external power supply. The inner wall of the sensing cylinder on the lower side is inlaid with a conductive plate, and the conductive plate is electrically connected to the control cabinet.

[0014] Preferably, the analysis component includes a vertical plate fixedly connected to the upper side wall of the mounting frame, the left side wall of the vertical plate is fixedly connected to a first electric push rod, the moving end of the first electric push rod passes through the vertical plate and is fixedly connected to a U-shaped frame, the front and rear side walls of the U-shaped frame are fixedly connected to a second electric push rod, the moving ends of the two second electric push rods are fixedly connected to an arc plate, the inner walls of the two arc plates are fixedly connected to a plurality of telescopic cylinders, a telescopic frame is movably inserted into the telescopic cylinder, one end of the telescopic frame extending out of the telescopic cylinder is fixedly connected to a ball bearing, one end of the telescopic frame located in the telescopic cylinder and the same spring are fixedly connected between the telescopic cylinder, one end of one of the telescopic frames located in the telescopic cylinder is fixedly connected to a conductive frame, the inner wall of the telescopic cylinder matching the telescopic frame is inlaid with a resistor plate, and the end of the resistor plate away from the telescopic frame is electrically connected to the control cabinet.

[0015] Preferably, a connecting ring is fixedly sleeved on the outer wall of the sensing pin, and a protective airbag sleeved on the outside of the sensing pin is fixedly connected between the connecting ring and the sensing tube.

[0016] Preferably, the front and rear sides of the lower side wall of the mounting frame are fixedly connected to hydraulic cylinders, and the movable end of the hydraulic cylinder is fixedly connected to a nail plate.

[0017] Preferably, a protective cover arranged on 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.

[0018] Compared with existing technologies, the advantages of a medium-deep geothermal hole geothermal detection device are:

[0019] 1. Through the detection component set up, when using the detection component to detect deep geothermal heat, the geothermal heat can be automatically detected while the drill bit is drilling, without stopping the drill bit and then detecting the geothermal energy, thereby omitting the time of frequently starting and retracting the geothermal detection head and ensuring the efficiency of the detection work.

[0020] 2. Through the set drill bit assembly, when the drill bit assembly is used for a long time, causing the main cutting edge on the surface to wear and affecting the working performance of the drill bit assembly, the spare cutting edge can be automatically moved to the set position to assist the main cutting edge in drilling work. There is no need to immediately remove the drill bit assembly from deep underground, reducing the exploration cost and time cost of the detection device.

[0021] 3. By setting up the analysis component, the stability of the drill rod can be improved during the operation of the detection device. At the same time, when the drill rod vibrates abnormally, the control cabinet can analyze the abnormal vibration, thereby promptly reminding the operator to perform corresponding operations, further ensuring the working performance of the detection component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a geothermal detection device for a mid-deep geothermal hole provided by the present invention;

[0023] Figure 2 This is a schematic structural diagram of a detection component in a geothermal detection device for a mid-deep geothermal hole provided by the present invention;

[0024] Figure 3 This is a structural schematic diagram of a drill bit assembly in a geothermal detection device for a mid-deep geothermal hole provided by the present invention;

[0025] Figure 4 This is a schematic structural diagram of a sensing component in a geothermal detection device for a mid-deep geothermal hole provided by the present invention;

[0026] Figure 5 It is a top view of a U-shaped frame in a geothermal detection device for a medium-deep geothermal hole provided by the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of a telescopic cylinder in a geothermal detection device for a mid-deep geothermal hole provided by the present invention;

[0028] Figure 7 It is a schematic diagram of the surface structure of a lifting seat in a geothermal detection device for a medium-deep geothermal hole provided by the present invention.

[0029] In the figure: 1 mounting frame, 2 control cabinet, 3 screw drive mechanism, 4 lifting plate, 5 lifting seat, 6 mounting rod, 7 liquid inlet pipe, 8 driving motor, 9 drill rod, 10 drill bit assembly, 101 drill bit seat, 102 main cutting edge, 11 liquid inlet chamber, 12 first control valve, 13 piston chamber, 14 piston seat, 15 oblique chamber, 16 oblique rod, 17 spare cutting edge, 18 piston plate, 19 cross pipe, 20 second control valve, 21 detection assembly, 211 detection chamber, 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, 28 lower filter, 29 second short pipe, 30 second regulating valve, 31 third regulating valve, 32 sensing component, 321 sensing cylinder, 322 sensing pin, 33 telescopic airbag, 34 moving plate, 35 conductive block, 36 conductive plate, 37 analysis component, 371 vertical plate, 372 first electric push rod, 38 U-shaped frame, 39 second electric push rod, 40 arc plate, 41 telescopic cylinder, 42 telescopic frame, 43 ball, 44 conductive frame, 45 resistor plate, 46 connecting ring, 47 protective airbag, 48 hydraulic cylinder, 49 nail plate, 50 protective cover, 51 heat sink. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-Figure 7 As shown, a geothermal detection device for a medium-deep geothermal hole includes a mounting frame 1, a control cabinet 2 is fixedly connected to the upper side wall of the mounting frame 1, a screw drive mechanism 3 is fixedly connected to the upper side wall of the mounting frame 1, an output end of the screw drive mechanism 3 is fixedly connected to a lifting plate 4, and a pressure sensor is provided between the output end of the 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, and further includes:

[0032] 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 the 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 the 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 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 at the lower end is threadedly connected to a drill bit assembly 10. The drill bit assembly 10 includes a drill bit seat 101 threadedly connected to the lowermost drill rod 9. 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 multiple drill rods 9 are all provided with a liquid inlet chamber 11 that is interconnected, and the side wall of the drill bit seat 101 is provided with a nozzle that is interconnected with the liquid inlet chamber 11, and a first control valve 12 located inside the drill bit seat 101 is provided in the liquid inlet chamber 11, and a piston chamber 13 is provided inside the drill bit seat 101. 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 to the piston seat 14 by a spring, and a plurality of inclined chambers 15 are provided on the lower side wall of the piston chamber 13, 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 to a spare cutting edge 17, and the upper end of the inclined rod 16 is fixedly connected to a piston plate 18, and the liquid inlet chamber 11 and the piston chamber 13 are fixedly connected by a same horizontal pipe 19, and a second control valve 20 is provided in the horizontal pipe 19. The cutting performance of the drill bit assembly 10 can be guaranteed by this assembly;

[0033] The detection component 21 is arranged inside the lowermost drill rod 9 and is used for geothermal detection. The detection component 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. The interior of the detection chamber 211 is inlaid with a temperature sensor 212. The temperature sensor 212 is electrically connected to the control cabinet 2 through a conductive slip ring mechanism. An annular groove 22 is opened on the outside of 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 liquid inlet chamber 11 and the annular groove 22 are fixedly connected by the same first short pipe. 24, a first regulating valve 25 is provided in the first short tube 24, a hydraulic pressure sensor 26 is provided inside the annular groove 22, and the hydraulic pressure sensor 26 is electrically connected to the control cabinet 2. The upper port of the detection chamber 211 is fixedly connected to the upper filter 27, and the lower port of the detection chamber 211 is connected to the lower filter 28 through the sensing component 32. The detection chamber 211 and the liquid inlet chamber 11 are fixedly connected by the same second short tube 29, and a second regulating valve 30 is provided in the second short tube 29. A third regulating valve 31 is provided in the detection chamber 211. Through this component, geothermal energy can be detected;

[0034] The 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. The analysis component 37 includes a vertical plate 371 fixedly connected to the upper side wall of the mounting frame 1. The left side wall of the vertical plate 371 is fixedly connected to a first electric push rod 372. 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. The front and rear side walls of the U-shaped frame 38 are fixedly connected to second electric push rods 39. The moving ends of the two second electric push rods 39 are fixedly connected to an arc plate 40. The inner walls of the two arc plates 40 are fixedly connected to the There are multiple telescopic cylinders 41, and a telescopic frame 42 is movably inserted into the telescopic cylinder 41. The end of the telescopic frame 42 extending out of the telescopic cylinder 41 is fixedly connected to a ball 43. The end of the telescopic frame 42 located in the telescopic cylinder 41 is fixedly connected to the same spring. One end of the telescopic frame 42 located in the telescopic cylinder 41 is fixedly connected to a conductive frame 44. The inner wall of the telescopic cylinder 41 that matches the telescopic frame 42 is inlaid with a resistor plate 45. The end of the resistor plate 45 away from the telescopic frame 42 is electrically connected to the control cabinet 2, so that the vibration of the drill rod 9 can be analyzed.

[0035] The sensing assembly 32 includes two sensing cylinders 321, which are respectively fixedly connected to the upper and lower inner walls of the lower port of the detection chamber 211. The right side walls of the two sensing cylinders 321 are movably connected with sensing pins 322. The right ends of the two sensing pins 322 are connected to the lower filter 28. The left side walls of the two sensing cylinders 321 are fixedly connected with telescopic air bags 33. The left ends of the sensing pins 322 are located in the sensing cylinders 321 and are fixedly connected to a movable plate 34. The movable plate 34 and the sensing cylinder 321 are fixedly connected with the same spring. The side wall of the lower movable plate 34 is fixedly connected with a conductive block 35, which is electrically connected to an external power supply. The inner wall of the lower sensing cylinder 321 is inlaid with a conductive plate 36, which is electrically connected to the control cabinet 2. Through this component, the blockage of the lower filter 28 can be detected.

[0036] A connecting ring 46 is fixedly sleeved on the outer wall of the sensing pin 322 , and a protective airbag 47 sleeved on the outside of the sensing pin 322 is fixedly connected between the connecting ring 46 and the sensing tube 321 to prevent impurities from entering the sensing tube 321 .

[0037] The operating principle of the present invention is now described as follows: the detection equipment is moved to the designated 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, and the first electric push rod 372 drives the U-shaped frame 38 to move to the right to the set position. Then the control cabinet 2 controls the two second electric push rods 39 to work, and the two second electric push rods 39 will drive the two curved plates 40 to move in a direction close to each other. The curved plate 40 will drive the telescopic cylinder 41 and the telescopic frame 42 and the ball 43 on the surface to move in a direction close to the drill rod 9, so that the ball 43 contacts 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 The control cabinet 2 also controls the operation of the driving motor 8, which controls the installation rod 6, the drill rod 9 and the drill bit assembly 10 to rotate together through the bevel gear transmission assembly, so that drilling can be performed on the ground. At the same time, the control cabinet 2 also controls the operation of the external pump assembly, which uses the external pump assembly to transport the drilling fluid to the installation rod 6 through the liquid inlet pipe 7. The installation rod 6 is a hollow structure. The drilling fluid will be transported to the drill rod 9 and the liquid inlet cavity 11 inside the drill bit seat 101 through the installation rod 6, and sprayed out through the nozzle on the lower side of the drill bit seat 101;

[0038] When the drill bit seat 101 drills to the set depth, during the downward movement of the drill bit seat 101, the control cabinet 2 controls the first control valve 12 to close and the first regulating valve 25 to open, so that part of the drilling fluid is transported into the annular groove 22 through the first short pipe 24, causing the wear-resistant rubber ring 23 to expand. When the control cabinet 2 detects that the pressure inside the wear-resistant rubber ring 23 reaches the set threshold (2kPa) through the hydraulic sensor 26, it controls the first control valve 12 to open and the first regulating valve 25 to close. After the drilling fluid is ejected from the drill bit seat 101, , it will be discharged to the ground through the gap between the drill rod 9 and the borehole. When the wear-resistant rubber ring 23 expands, the gap between the drill rod 9 and the borehole will shrink, and part of the drilling fluid will pass through the lower filter 28 into the detection chamber 211 and be discharged through the upper port of the detection chamber 211. After the drilling fluid is discharged from under the drill bit seat 101, the geothermal heat will be used to heat the drilling fluid. After the drilling fluid passes through the detection chamber 211, the temperature of the drilling fluid can be detected by the temperature sensor 212 inside the detection chamber 211, thereby detecting the geothermal heat in the area.

[0039] When there are too many impurities attached to the surface of the lower filter 28, the permeability of the lower filter 28 will decrease. When the drilling fluid passes through the lower filter 28, the resistance it encounters will become greater. Under the action of the resistance, the lower filter 28 will drive the induction pin 322, the movable plate 34 and the conductive block 35 to move to the left (the lower filter 28 is slidably arranged in the detection chamber 211, and the lower filter 28 and the inner wall of the detection chamber 211 are in contact). During the movement, the conductive block 35 will contact the conductive plate 36, and the conductive block 35 is electrically connected to the external power supply. The conductive plate 36 It is electrically connected to the control cabinet 2. When the two come into contact, a current signal is transmitted to the control cabinet 2. After receiving the current signal, the control cabinet 2 controls the first control valve 12 and the third regulating valve 31 to close, and controls the second regulating valve 30 to open for ten seconds, so that the drilling fluid inside the liquid inlet chamber 11 is transported through the second short pipe 29 to the bottom of the third regulating valve 31 in the detection chamber 211, so that the drilling fluid is backflushed from the left side of the lower filter screen 28. The delivery pressure of the drilling fluid is 10-40 MPa, which can clean the impurities attached to the right side of the lower filter screen 28.

[0040] When the main cutting edge 102 is severely worn due to long-term use, the cutting ability of the drill seat 101 will drop significantly, and the resistance of the drill seat 101 and the drill rod 9 to the downward movement will increase. The control cabinet 2 can detect this situation through the pressure sensor above the lifting plate 4, and the drill rod 9 will continue to vibrate (wear causes the center of gravity of the drill seat 101 to shift and become unbalanced). The vibrating drill rod 9 will push the ball 43 back and forth, and the ball 43 will drive the conductive frame 44 to move back and forth on the surface of the resistor plate 45 through the telescopic frame 42. The conductive frame 44 is electrically connected to the external power supply, and the end of the resistor plate 45 away from the telescopic frame 42 is electrically connected to the control cabinet 2. Therefore, when the conductive frame 44 moves back and forth on the resistor plate 45, it will send a continuously changing electrical signal to the control cabinet 2, and the control After the control cabinet 2 detects these two situations, it means that the main cutting edge 102 has been worn. The control cabinet 2 will control the drive motor 8 and the screw drive mechanism 3 to stop working at the same time, and control the first control valve 12 to close, and control the second control valve 20 to open for ten seconds. The drilling fluid inside the liquid inlet chamber 11 will be transported to the top of the piston seat 14 in the piston chamber 13 through the cross pipe 19, 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, and use the hydraulic oil to squeeze the piston plate 18. The piston plate 18 will drive the spare cutting edge 17 downward and outward to the set position through the inclined rod 16, thereby enhancing the cutting ability of the drill bit seat 101. There is no need to immediately remove the drill bit assembly 10 from deep underground, reducing the exploration cost and time cost of the detection device.

[0041] When the drill rod 9 continues to vibrate due to deformation, referring to the above principle, the conductive frame 44 will continue to contact the resistor plate 45, but the pressure sensor does not detect the increase in the resistance of the drill rod 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, it is necessary to control the detection work to stop in time and check the appearance of the drill rod 9. When the control cabinet 2 detects that the drill rod 9 has intermittent vibration 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, reminding the operator to promptly check the connection stability of the drill rod 9 or repair the faulty equipment (for example, failure of the drive motor 8, transmission device, etc. may cause unstable power output, causing intermittent vibration of the drill rod 9).

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A geothermal detection device for a medium-deep geothermal hole, comprising a mounting frame (1), wherein the upper side wall of the mounting frame (1) is fixedly connected to a control cabinet (2), the upper side wall of the mounting frame (1) is fixedly connected to a screw drive mechanism (3), the output end of the screw drive mechanism (3) is fixedly connected to a lifting plate (4), and a pressure sensor is provided between the output end of the screw drive mechanism (3) and the lifting plate (4), and the left side wall of the lifting plate (4) is fixedly connected to a lifting seat (5), characterized in that: Also 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 end of the mounting rod (6) is rotatably connected to the liquid inlet pipe (7) through a sealed bearing, and 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 drive motor (8), the output end of the drive motor (8) is 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, and the lower end of the drill rod (9) located at the bottom is threadedly connected to a drill bit assembly (10); The detection component (21) is arranged inside the lowermost drill pipe (9) and is used for geothermal detection. When the drilling fluid passes through the detection chamber (211), the temperature of the drilling fluid is detected by the temperature sensor (212) inside the detection chamber (211). When the drilling fluid passes through the lower filter (28), the conductive block (35) contacts 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 the two are in contact, a current signal is transmitted to the control cabinet (2). After receiving the current signal, the control cabinet (2) controls the first control valve (12) and the third regulating valve (31) to close, and controls the second regulating valve (30) to open for ten seconds, so that the drilling fluid inside the liquid inlet chamber (11) is transported to the bottom of the third regulating valve (31) in the detection chamber (211) through the second short pipe (29), so that the drilling fluid is backwashed from the left side of the lower filter (28); 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 detection device for a medium-deep geothermal hole 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) fixedly connected to the lower side wall of the drill bit seat (101), a liquid inlet cavity (11) interconnected with each other is provided on the drill bit seat (101) and the rod walls of the plurality of drill rods (9), and a nozzle is provided on the side wall of the drill bit seat (101) and interconnected with the liquid inlet cavity (11), a first control valve (12) located inside the drill bit seat (101) is provided in the liquid inlet cavity (11), a piston cavity (13) is provided inside the drill bit seat (101), and the piston cavity (13) is provided in the inner wall of the drill bit seat (101). ) 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, a plurality of inclined chambers (15) are provided on the lower side wall of the piston chamber (13), 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 a medium-deep geothermal hole according to claim 2, characterized in that: The detection assembly (21) includes a detection cavity (211) opened inside the bottom drill rod (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), and 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 bottom drill rod (9), and a wear-resistant rubber ring (23) is fixedly connected to the inner wall of the annular groove (22), and the same first short tube (24) is fixedly connected between the liquid inlet cavity (11) and the annular groove (22), and the first short tube (24) is fixedly connected to the liquid inlet cavity (11) and the annular groove (22). 4) is provided with a first regulating valve (25), a hydraulic sensor (26) is provided inside the annular groove (22), the hydraulic sensor (26) is electrically connected to the control cabinet (2), the upper port of the detection chamber (211) is fixedly connected to an upper filter screen (27), the lower port of the detection chamber (211) is connected to a lower filter screen (28) through a sensing component (32), the detection chamber (211) and the liquid inlet chamber (11) are fixedly connected by a same second short tube (29), a second regulating valve (30) is provided in the second short tube (29), and a third regulating valve (31) is provided in the detection chamber (211).

4. The geothermal detection device for a mid-deep geothermal hole according to claim 3, characterized in that: The sensing assembly (32) includes two sensing tubes (321), the two sensing tubes (321) are fixedly connected to the upper and lower inner walls of the lower port of the detection chamber (211), respectively, the right side walls of the two sensing tubes (321) are movably connected with sensing pins (322), the right ends of the two sensing pins (322) are connected to the lower filter (28), the left side walls of the two sensing tubes (321) are fixedly connected with telescopic airbags (33), the left ends of the sensing pins (322) are located in the sensing tube (321) and are fixedly connected to a movable plate (34), the movable plate (34) and the sensing tube (321) are fixedly connected with a same spring, the side wall of the movable plate (34) located at the lower side is fixedly connected with a conductive block (35), the conductive block (35) is electrically connected to an external power supply, the inner wall of the sensing tube (321) located at the lower side is inlaid with a conductive plate (36), and the conductive plate (36) is electrically connected to the control cabinet (2).

5. The geothermal detection device for a mid-deep geothermal hole 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), the left side wall of the vertical plate (371) is fixedly connected to a first electric push rod (372), the movable end of the first electric push rod (372) passes through the vertical plate (371) and is fixedly connected to a U-shaped frame (38), the front and rear side walls of the U-shaped frame (38) are fixedly connected to second electric push rods (39), the movable ends of the two second electric push rods (39) are fixedly connected to an arc plate (40), the inner walls of the two arc plates (40) are fixedly connected to a plurality of telescopic cylinders (41), the A telescopic frame (42) is movably inserted into the telescopic cylinder (41), and one end of the telescopic frame (42) extending out of the telescopic cylinder (41) is fixedly connected to a ball (43), and one end of the telescopic frame (42) located in the telescopic cylinder (41) and the telescopic cylinder (41) are fixedly connected to a same spring, and one end of the telescopic frame (42) located in the telescopic cylinder (41) is fixedly connected to a conductive frame (44), and a resistor plate (45) is embedded in the inner wall of the telescopic cylinder (41) that matches the telescopic frame (42), and the end of the resistor plate (45) away from the telescopic frame (42) is electrically connected to the control cabinet (2).

6. The geothermal detection device for a mid-deep geothermal hole according to claim 4, characterized in that: A connecting ring (46) is fixedly sleeved on the outer wall of the sensing pin (322), and a protective airbag (47) sleeved on the outside of the sensing pin (322) is fixedly connected between the connecting ring (46) and the sensing tube (321).

7. The geothermal detection device for a mid-deep geothermal hole according to claim 1, characterized in that: The front and rear sides of the lower side wall of the mounting frame (1) are both fixedly connected to a hydraulic cylinder (48), and the movable end of the hydraulic cylinder (48) is fixedly connected to a nail plate (49).

8. The geothermal detection device for a mid-deep geothermal hole according to claim 1, characterized in that: The upper side wall of the lifting seat (5) is fixedly connected to a protective cover (50) arranged outside 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).

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