Exploration equipment for geothermal resources and method of use

Abstract

The present application belongs to the technical field of geothermal resource exploration, especially to the equipment for geothermal resource exploration and the using method. The equipment solves the problems of poor stability of drill pipe connection, low installation efficiency, inconvenience of adding and difficulty of sampling. The technical scheme includes: the convex platform cooperates with the hexagonal clamping groove, the trapezoidal tooth II clamps the trapezoidal tooth I, and the stability of drill pipe connection is ensured; the rod adding structure automatically pushes the drill pipe to move stably and add; the rotating ring I drives the hexagonal platform I to drive the drill pipe to rotate, and the advancing hydraulic cylinder drives the drill pipe to move downward; the electric push rod drives the positioning cone to move, and sampling is realized, the installation efficiency of the drill pipe is improved, the rod can be automatically added, sampling is convenient, and the equipment is suitable for geothermal resource exploration drilling operation.

Description

Technical Field

[0001] This invention relates to the field of geothermal resource exploration technology, and in particular to exploration equipment and methods for geothermal resources. Background Technology

[0002] Geothermal resource exploration involves comprehensive geological, geophysical, and geochemical surveys, as well as geological work such as drilling and testing, sampling and testing, and dynamic monitoring, to determine the geothermal resources in a specific area. Depending on the stage of exploration, it can be divided into investigation, pre-feasibility exploration, feasibility exploration, and extraction.

[0003] Traditional drilling equipment has shortcomings in drill pipe connection. Adjacent drill pipes are often connected via threads, resulting in poor stability, complex installation, and low installation efficiency. Furthermore, as drilling depth increases, adding drill pipes becomes inconvenient, making it difficult to ensure smooth addition and accurate connection. In addition, existing drilling equipment requires additional complex devices for sampling downhole rock fragments and geothermal sources after drilling, increasing equipment costs and operational difficulty. Therefore, it is essential to develop geothermal resource exploration equipment that can solve these problems.

[0004] Therefore, in order to solve the above problems, this application proposes exploration equipment and methods for geothermal resources. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing drill pipes, such as poor connection stability, low installation efficiency, inconvenience in adding components, and difficulty in sampling, and to propose an exploration device and method for geothermal resources.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Equipment used for geothermal resource exploration includes:

[0008] A base, the top of which is fixed to a top cover plate by a support column, and a rotating rod is rotatably connected between the base and the top cover plate;

[0009] The drilling structure consists of a base rod, a drill bit, and multiple drill pipes. The drill bit is fixed to the bottom end of the base rod. The top end of the base rod and the top end of the drill pipe are provided with a first locking structure, and the bottom end of the drill pipe is provided with a second locking structure. The first locking structure and the second locking structure are locked together.

[0010] The drive structure, located inside the thrust plate, includes a rotating ring I that is rotatably connected and a lifting platform that is slidably connected. The bottom end of the lifting platform is fixed with a hexagonal platform I that is plugged into and engaged with the first snap-fit ​​structure.

[0011] The drill rod structure is located between the base and the top cover plate, including a lower plate fixedly connected to the base and an upper plate fixedly connected to the top cover plate. The lower plate drives the U-shaped bracket to move the drill rod through the screw I.

[0012] The rotating rod drives the rotating ring I to rotate via synchronous pulley II and synchronous pulley I, thereby rotating the drilling structure; the output shaft of the propulsion hydraulic cylinder passes through the top cover plate and is fixed to the lifting platform, driving the drilling structure to move downward.

[0013] In one possible design, the first snap-fit ​​structure includes a hexagonal snap-fit ​​groove at the top of the drill pipe and a plurality of trapezoidal teeth I in a limiting groove on the outer wall of the drill pipe.

[0014] In one possible design, the second snap-fit ​​structure includes a boss fixed to the bottom end of the drill pipe, the boss having a hexagonal groove, a hexagonal platform II slidably connected within the hexagonal groove and inserted into the hexagonal snap-fit ​​groove, the hexagonal platform II abutting against the top of the hexagonal groove by a spring I;

[0015] The outer wall of the boss is threaded with a nut seat, and the bottom end of the nut seat is slidably connected to multiple plug sleeves. Inside the plug sleeves, a sliding plate with trapezoidal teeth II is connected by a spring II.

[0016] When the drill rod rotates, the nut seat pushes the plug sleeve into the limiting groove, and trapezoidal tooth II engages with trapezoidal tooth I to lock the adjacent drill rod.

[0017] In one possible design, the drive structure further includes a timing pulley II that rotates on the top of the connecting support, and the timing pulley II slides on the outer wall of the rotating rod via a sliding block.

[0018] A synchronous pulley I is fixedly sleeved on the outer wall of the rotating ring I, and synchronous pulley I and synchronous pulley II are connected by synchronous belt drive.

[0019] In one possible design, the rod-adding structure also includes an end cap plate fixed to the top of the U-shaped bracket, the end cap plate connecting two guardrails with partitions, and the drill rod being accommodated between adjacent partitions;

[0020] The screw I thread passes through the U-shaped bracket, driving the drill rod to move below the thrust plate.

[0021] In one possible design, a limit block is fixed on one side of the thrust plate, and the limit block cooperates with the upper plate to make the bottom of the thrust plate flush with the bottom of the upper plate.

[0022] In one possible design, a screw II fixed to the top of the base is also included, with a rubber wheel slidably sleeved on the outer wall of the screw II, and the rubber wheel connected to the base via a spring III;

[0023] An anti-slip ring is fixedly fitted on the outer wall of the nut seat. The anti-slip ring is in frictional contact with the rubber wheel, and the outer wall of the anti-slip ring is provided with anti-slip vertical stripes.

[0024] In one possible design, a circular groove is provided on one side of the plug sleeve, a lead screw is fixed in the circular groove, the lead screw is threaded to a rotating nut, the rotating nut is connected to multiple steel cables through a rotating ring II, and the steel cables are fixed to the slide plate;

[0025] Rotating the nut drives the steel cable to pull the slide plate, releasing the engagement between trapezoidal tooth II and trapezoidal tooth I.

[0026] In one possible design, the bottom end of the base rod is provided with a mounting cavity, and an electric push rod is fixed inside the mounting cavity;

[0027] The drill bit has an internal cavity, and the output shaft of the electric push rod is fixed with a sealing positioning cone that slides in the feed inlet;

[0028] The positioning cone moves upward to open the feed inlet, and the receiving cavity collects rock fragments and geothermal sources.

[0029] The equipment and method for exploring geothermal resources described in this application include the following steps:

[0030] S1. Initial Drilling: Place the base in the drilling position, start the propulsion hydraulic cylinder to lower the lifting platform and hexagonal platform one, so that hexagonal platform one is inserted into the hexagonal slot at the top of the first section of drill pipe; start the motor to drive the rotating rod to rotate, which drives the lifting platform and hexagonal platform one to rotate through the synchronous belt pulley system, thereby driving the drill pipe assembly to rotate and move down to carry out drilling.

[0031] S2. Preparation for connection: When the thrust plate touches the top of the lower plate, the hydraulic cylinder is pushed to lift the lifting platform and the thrust plate is reset until the limit block touches the upper plate. The hexagonal platform retracts and the top of the drill pipe is flush with the top of the lower plate.

[0032] S3. Positioning and initial docking of the new drill pipe: The drive screw rotates and pushes the drill pipe to be connected to move laterally to the top of the drill pipe that has already been drilled and then limits its position through the support structure; the inner hexagonal platform of the new drill pipe is inserted into the hexagonal groove of the lower drill pipe under the action of the spring to complete the initial docking.

[0033] S4. Locking and Continuing Drilling: The propulsion hydraulic cylinder lowers the hexagonal platform one and inserts it into the hexagonal slot at the top of the new drill pipe; the motor starts to drive the drill pipe to rotate; as the drill pipe rotates, under the side effect of anti-slip friction, the nut seat and the boss thread engage to drive the plug sleeve to move down into the limiting groove; the trapezoidal teeth two inside the plug sleeve are squeezed inward by the trapezoidal teeth one of the drill pipe below, and then pushed by the elastic force of spring two to engage and lock the adjacent drill pipe; then the drill pipe assembly continues to rotate and move down to drill.

[0034] S5. Sampling Operation: The hydraulic cylinder is pushed to lift the drill pipe assembly, creating a gap between the drill bit and the bottom of the well; the electric push rod is activated to lift the positioning cone and open the feed inlet at the bottom of the drill bit receiving cavity, allowing rock fragments and geothermal sources to enter; after sampling is completed, the positioning cone is lowered to close the feed inlet.

[0035] S6. Connection Release and Removal: Rotate the rotating nut to move the rotating ring two outward, and pull the sliding plate inward via the steel cable to disengage trapezoidal tooth two from trapezoidal tooth one; after releasing the lock, separate and remove the adjacent drill rod.

[0036] Beneficial effects: In this invention, the boss is provided with a hexagonal groove, and a hexagonal platform II that is slidably connected in the hexagonal groove and engages with an adjacent hexagonal slot is inserted into it. The outer wall of the boss is threaded with a nut seat, and the bottom end of the nut seat is slidably connected with multiple insertion sleeves. The multiple insertion sleeves slide on the outer wall of the boss, and multiple trapezoidal teeth II slide in the insertion sleeves via a sliding plate. When the anti-slip ring and the nut seat rotate relative to the drill rod, they push the insertion sleeves down and extend into the limiting groove. The engagement of trapezoidal teeth II and trapezoidal teeth I can further engage two adjacent drill rods, ensuring the stability between the two adjacent drill rods. The operation is simple and improves the installation efficiency between two adjacent drill rods.

[0037] In this invention, a screw II is fixed to the top of the base. A rubber wheel is slidably fitted onto the outer wall of the screw II via a sliding groove and a slider. An anti-slip ring is fixedly fitted onto the outer wall of the nut seat. The outer wall of the anti-slip ring has multiple anti-slip vertical stripes. When the rotating ring I drives the drill rod to rotate through the hexagonal platform I, the friction between the rubber wheel and the anti-slip ring causes the anti-slip ring to remain stationary. Therefore, the anti-slip ring and the nut seat rotate relative to the drill rod, thereby causing the nut seat and the plug sleeve to move down and extend the plug sleeve into the limiting groove, which facilitates the clamping of two adjacent drill rods.

[0038] In this invention, the drill rod adding structure includes an upper plate fixed to the top of the base and an upper plate fixed to the bottom of the top cover plate. A U-shaped bracket is slidably connected inside the lower plate. Two protective rails are fixed to the top of the U-shaped bracket via an end cover plate. Multiple partition plates are fixed to the side of the two protective rails that are close to each other. A screw rod I, which is threadedly connected to the U-shaped bracket, is rotatably connected to the top of the base. The U-shaped bracket pushes the drill rod to one side through the end cover plate and the partition plates. The multiple partition plates are located between two adjacent drill rods to limit the drill rod. The upper plate, the thrust plate, the lower plate, and the drill rod inserted into the ground limit the moving drill rod, thereby ensuring that the drill rod on the lower plate can move smoothly between the thrust plate and the drill rod inserted into the ground, automatically completing the addition of the drill rod. This facilitates the subsequent clamping of two adjacent drill rods and greatly improves the installation efficiency.

[0039] In this invention, an electric push rod is fixed inside the base rod, and a positioning cone is fixed to the output shaft of the electric push rod. The bottom of the drill bit is provided with a feed port that communicates with the accommodating cavity. The bottom end of the positioning cone is sealed and slides through the feed port. The hydraulic cylinder drives the base rod, drill bit, and multiple drill rods to move upward a certain distance, so that there is a gap between the drill bit and the bottom end of the well. Then, the electric push rod drives the positioning cone to move upward, releasing the seal on the feed port at the bottom end of the accommodating cavity. Rock fragments and geothermal sources in the well flow into the accommodating cavity to complete the sampling operation. Then, the positioning cone moves downward again to seal the feed port.

[0040] In this invention, the engagement of the boss and the hexagonal slot, along with the engagement of trapezoidal tooth II and trapezoidal tooth I, enhances the stability of the drill pipe connection, simplifies operation, and improves installation efficiency. The rod-adding structure automatically pushes the drill pipe to move smoothly for addition, ensuring a stable addition process. The rotating ring I and the hexagonal platform I work together to drive the drill pipe to rotate, and the hydraulic cylinder drives it downwards, achieving efficient drilling. The electric push rod moves the positioning cone, facilitating sampling. Overall, this invention improves drill pipe installation efficiency, automatically completes rod addition, facilitates sampling, and reduces equipment costs and operational difficulty. Attached Figure Description

[0041] Figure 1 This is a three-dimensional structural schematic diagram of the geothermal resource exploration equipment provided by the present invention;

[0042] Figure 2 This is a three-dimensional cross-sectional structural diagram of the geothermal resource exploration equipment provided by the present invention;

[0043] Figure 3 This is a three-dimensional cross-sectional structural diagram of the connecting support and thrust plate of the geothermal resource exploration equipment provided by the present invention.

[0044] Figure 4 This is a three-dimensional exploded structural diagram of the connecting support, thrust disk, and rotating ring I of the geothermal resource exploration equipment provided by the present invention;

[0045] Figure 5 This is a three-dimensional exploded structural diagram of the thrust plate, lifting platform, and rotating ring I of the geothermal resource exploration equipment provided by the present invention;

[0046] Figure 6 A three-dimensional exploded structural diagram of the upper plate, lower plate, and guardrail of the geothermal resource exploration equipment provided by the present invention;

[0047] Figure 7 This is a three-dimensional exploded structural diagram of the protective railing, partition plate, and end cover plate of the top plate of the geothermal resource exploration equipment provided by the present invention.

[0048] Figure 8A three-dimensional structural schematic diagram of the rubber wheel, drill rod, and anti-slip ring of the geothermal resource exploration equipment provided by the present invention;

[0049] Figure 9 A three-dimensional exploded structural diagram of the drill rod, anti-slip ring, and rubber wheel of the geothermal resource exploration equipment provided by the present invention;

[0050] Figure 10 This is a three-dimensional cross-sectional structural diagram of the drill rod, nut seat, and plug sleeve of the geothermal resource exploration equipment provided by the present invention;

[0051] Figure 11 This is a three-dimensional exploded structural diagram of the sliding plate, trapezoidal tooth II, and rotating ring II of the geothermal resource exploration equipment provided by the present invention;

[0052] Figure 12 This is a partial three-dimensional cross-sectional structural diagram of the base rod and drill bit of the geothermal resource exploration equipment provided by the present invention.

[0053] In the diagram: 1. Base; 2. Top cover plate; 3. Propulsion hydraulic cylinder; 4. Thrust disc; 5. Rotating ring I; 6. Lifting platform; 7. Hexagonal platform I; 8. Synchronous pulley I; 9. Connecting support; 10. Synchronous pulley II; 11. Rotating rod; 12. Upper plate; 13. Lower plate; 14. Drill rod; 15. Base rod; 16. Drill bit; 17. Guardrail; 18. Divider plate; 19. End cover plate; 20. U-shaped bracket; 21. Screw I; 22. Limiting block; 23. Hexagonal slot; 24. Limiting groove; 25. 26. Trapezoidal tooth I; 27. Hexagonal groove; 28. Spring I; 29. ​​Hexagonal platform II; 30. Nut seat; 31. Insert sleeve; 32. Slide plate; 33. Spring II; 34. Trapezoidal tooth II; 35. Circular groove; 36. Rotary nut; 37. Lead screw; 38. Rotary ring II; 39. Steel cable; 40. Screw II; 41. Rubber wheel; 42. Spring III; 43. Hexagonal nut block; 44. Clearance hole; 45. Electric push rod; 46. Positioning cone; 47. Receiving cavity; 48. Anti-slip ring; 49. Boss. Detailed Implementation

[0054] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0055] In one embodiment: Refer to Figures 1-11This is an exploration equipment related to the field of geothermal resource exploration technology. The device mainly includes a base 1, a top cover plate 2, a rotating rod 11, a connecting support 9, a thrust plate 4, a propulsion hydraulic cylinder 3, a drilling structure, a drive structure, and a rod-adding structure. The base 1 serves as the supporting foundation for the equipment, and the top cover plate 2 is fixed to its top by a support column. A rotating rod 11 is rotatably connected between the base 1 and the top cover plate 2. A connecting support 9 is fitted onto the outer wall of the rotating rod 11. A thrust plate 4 is located below the top cover plate 2, and the connecting support 9 is fixedly connected to the thrust plate 4. A propulsion hydraulic cylinder 3 is fixed to the top of the top cover plate 2.

[0056] Reference Figure 1 and Figure 2 The base 1 is made of high-strength steel, possessing excellent stability and load-bearing capacity, capable of withstanding the enormous pressure and vibration generated during drilling operations. Multiple fixing holes are located at the bottom of the base 1, allowing the equipment to be securely fixed to the ground with bolts, preventing movement during operation. The top cover 2, also made of high-strength steel, is fixedly connected to the base 1 by four support pillars, forming a stable frame structure. The surface of the top cover 2 undergoes anti-corrosion treatment, effectively preventing corrosion during long-term outdoor use.

[0057] Reference Figure 2 and Figure 3 The rotating rod 11 is rotatably connected between the base 1 and the top cover plate 2 via bearings, and can rotate freely around its own axis. A connecting support 9 is fitted onto the outer wall of the rotating rod 11. A synchronous pulley II 10 is fixed to the top of the connecting support 9. The synchronous pulley II 10 slides on the outer wall of the rotating rod 11 via a groove and a slider, ensuring that the synchronous pulley II 10 can stably follow the rotation of the rotating rod 11, and is unaffected when the connecting support 9 slides axially. The thrust disk 4 is located below the top cover plate 2 and is fixedly connected to the connecting support 9. The thrust disk 4 contains a drive structure for driving the drilling structure to rotate and move downwards for drilling operations. A limiting block 22 is fixed on the side of the thrust plate 4 away from the connecting support 9. The limiting block 22 cooperates with the upper plate 12. When the hydraulic cylinder 3 drives the lifting platform 6 and the thrust plate 4 to move upward, the limiting block 22 can contact the upper plate 12 to limit the thrust plate 4, so that the bottom of the thrust plate 4 is flush with the bottom of the upper plate 12, which makes it easy for the drill rod 14 to move smoothly between the upper plate 12 and the lower plate 13 to the bottom of the thrust plate 4.

[0058] Reference Figure 2 and Figure 3The propulsion hydraulic cylinder 3 is fixed to the top of the top cover plate 2, and its output shaft passes through the top cover plate 2 and extends into the thrust plate 4. The propulsion hydraulic cylinder 3 adopts a high-precision hydraulic control system, which can accurately control the extension and retraction speed and displacement of the output shaft. The output shaft of the propulsion hydraulic cylinder 3 is fixedly connected to the top of the lifting platform 6. Through the extension and retraction of the output shaft, the lifting platform 6 and the drill pipe 14 can be driven to move downward, realizing the propulsion of the drilling operation.

[0059] Reference Figure 1 and Figure 2 The drilling structure consists of a base rod 15, a drill bit 16, and multiple drill pipes 14. The drill bit 16 is fixed to the bottom end of the base rod 15 and is made of a high-hardness alloy material, possessing excellent wear resistance and cutting performance, enabling it to effectively break rocks and soil. The top end of the base rod 15 engages with the adjacent drill pipe 14, and the multiple drill pipes 14 are arranged vertically stacked, with adjacent drill pipes 14 engaging with each other.

[0060] Reference Figure 9 Both the base rod 15 and the drill rod 14 have a first snap-fit ​​structure at the top and a second snap-fit ​​structure at the bottom. The first snap-fit ​​structure includes a hexagonal slot 23 at the top of the drill rod 14, and multiple limiting slots 24 on the outer wall of the drill rod 14. Multiple trapezoidal teeth I are fixed on the inner wall of the side of the multiple limiting slots 24 that are close to each other.

[0061] Reference Figures 8-10 The second snap-fit ​​structure includes a boss 48 fixed to the bottom end of the drill pipe 14. A hexagonal groove 26 is provided within the boss 48, and a hexagonal platform II 28 is slidably connected within the hexagonal groove 26, engaging with an adjacent hexagonal slot 23. A spring I 27 is fixed between the top inner wall of the hexagonal groove 26 and the top of the hexagonal platform II 28 via a spring seat. The spring I 27 has a spring constant ranging from 50-100 N / mm, used to push the hexagonal platform II 28 into the adjacent hexagonal slot 23, achieving initial docking of the adjacent drill pipes 14.

[0062] Reference Figures 8-11The outer wall of the boss 48 is threaded, and a nut seat 29 is threadedly connected to the outer wall of the boss 48. Multiple insertion sleeves 30 are slidably connected to the bottom end of the nut seat 29, and all insertion sleeves 30 slide on the outer wall of the boss 48. The insertion sleeves 30 slide into adjacent limiting grooves 24. Under the action of the threads on the outer wall of the boss 48, the nut seat 29 drives the insertion sleeves 30 to extend into the limiting grooves 24, thereby increasing the stability between two adjacent drill rods 14. A sliding plate 31 is slidably connected inside the insertion sleeve 30. Multiple trapezoidal teeth II 33 are fixed on the side of the sliding plate 31 near the drill rod 14. The trapezoidal teeth II 33 engage with trapezoidal teeth I, thereby engaging two adjacent drill rods 14 when the insertion sleeve 30 extends into the adjacent limiting grooves 24, preventing the adjacent drill rods 14 from separating. Multiple springs II32 are fixed between the side of the slide plate 31 away from the trapezoidal tooth II33 and the inner wall of the plug sleeve 30 via spring seats. The spring coefficient of the springs II32 is in the range of 30-80 N / mm, and they are used to push the trapezoidal tooth II33 to move in the direction of the trapezoidal tooth I.

[0063] Reference Figures 2-5 The drive structure is located within the thrust plate 4, including a rotating ring I5 that rotates within the thrust plate 4 and a lifting platform 6 that slides within the rotating ring I5. A synchronous pulley I8 is fixedly fitted onto the outer wall of the rotating ring I5, and the synchronous pulley I8 is connected to the synchronous pulley II10 via a synchronous belt drive. A hexagonal platform I7 is fixed to the bottom end of the lifting platform 6, and the hexagonal platform I7 engages with the hexagonal groove 23 at the top of the adjacent drill rod 14.

[0064] During drilling operations, the output shaft of the propulsion hydraulic cylinder 3 pushes the lifting platform 6 and the hexagonal platform I7 downwards, with the hexagonal platform I7 extending into the hexagonal slot 23 at the top of the adjacent drill pipe 14. Simultaneously, the motor drives the rotating rod 11 to rotate, which in turn drives the synchronous pulley II 10 to rotate. The synchronous pulley II 10, via a synchronous belt, drives the synchronous pulley I 8 to rotate, which in turn drives the rotating ring I 5 to rotate. The rotating ring I 5 drives the lifting platform 6 and the hexagonal platform I 7 to rotate synchronously. Due to the engagement of the hexagonal slot 23 with the hexagonal platform I 7, the drill pipe 14, the base pipe 15, and the drill bit 16 can be driven to rotate, causing the drill bit 16 to rotate and move downwards for drilling operations.

[0065] Reference Figure 2 , Figure 6 and Figure 7The rod-adding structure is located between the base 1 and the top cover plate 2, and is used to automatically stack two adjacent drill rods 14. The rod-adding structure includes a lower plate 13 fixed to the top of the base 1 and an upper plate 12 fixed to the bottom of the top cover plate 2. The upper plate 12 and the lower plate 13 are used to limit the vertical movement of the stored drill rods 14. A U-shaped bracket 20 is slidably connected inside the lower plate 13. An end cover plate 19 is fixed to the top of the U-shaped bracket. Two guardrails 17 are fixed to one side of the end cover plate 19. The two guardrails 17 are used to limit the movement of the drill rods 14 on both sides. The cooperation of the upper plate 12, the lower plate 13 and the two guardrails 17 can smoothly push the drill rods 14 to move. Multiple partition plates 18 are fixed to the side of the two guardrails 17 that are close to each other. The partition plates 18 are used to separate the stored drill rods 14. The end cover plate 19 can push the drill rods 14 to move between the upper plate 12 and the lower plate 13 through the partition plates 18.

[0066] Reference Figure 2 , Figure 6 and Figure 7 A screw I 21 is rotatably connected to the top of the base 1 via a base plate. One end of the screw I 21 is threaded through the U-shaped bracket 20. By rotating the screw I 21, the screw I 21 is threadedly connected to the U-shaped bracket 20, which can drive the U-shaped bracket 20 to move. The U-shaped bracket pushes the drill rod 14 to one side through the end cover plate 19, the guardrail 17, and the partition plate 18. Multiple partition plates 18 are located between two adjacent drill rods 14, which can stably push multiple drill rods 14 until the drill rod 14 located on the far left moves to the top of the drill rod 14 inserted into the ground. The upper plate 12, the thrust plate 4, the lower plate 13, and the drill rod 14 inserted into the ground limit the movement of the drill rod 14, thereby ensuring that the drill rod 14 located on the lower plate 13 can move smoothly between the thrust plate 4 and the drill rod 14 inserted into the ground. Under the action of spring I 27, the hexagonal platform II 28 inside the drill rod 14 is inserted into the hexagonal slot 23 at the top of the drill rod 14 located on the ground, thus initially completing the docking of two adjacent drill rods 14.

[0067] Reference Figure 2 , Figure 8 and Figure 9 A screw II 39 is fixed to the top of the base 1. A rubber wheel 40 is slidably fitted onto the outer wall of the screw II 39 via a groove and a slider. A spring III 41 abuts against the bottom of the rubber wheel 40 and the top of the base 1 via a spring seat. The spring III 41 has a spring constant ranging from 20 to 60 N / mm. A hexagonal nut block 42 is threaded onto the outer surface of the screw II 39 and contacts the top of the rubber wheel 40. The position of the rubber wheel 40 can be adjusted by rotating the hexagonal nut block 42.

[0068] Reference Figure 3 , Figure 8 and Figure 9The connecting support 9 has a clearance hole 43, which allows the screw rod II 39 to be moved aside when the connecting support 9 pushes the drill rod 14 at the bottom of the thrust plate 4 downward. An anti-slip ring 47 is fixedly fitted onto the outer wall of the nut seat 29, and the outer wall of the anti-slip ring 47 abuts against the outer wall of the rubber wheel 40. The outer wall of the anti-slip ring 47 has multiple anti-slip vertical stripes to increase the friction between the rubber wheel 40 and the anti-slip ring 47.

[0069] When the rotating ring I5 drives the drill rod 14 to rotate via the hexagonal platform I7, the friction between the rubber wheel 40 and the anti-slip ring 47 causes the anti-slip ring 47 to remain stationary. Therefore, the anti-slip ring 47 and the nut seat 29 rotate relative to the drill rod 14, thereby causing the nut seat 29 and the insertion sleeve 30 to move downward and extend the insertion sleeve 30 into the limiting groove 24. When the thrust plate 4 and the connecting support 9 move downward, the clearance hole 43 makes way for the screw II 39, and the connecting support 9 can push the rubber wheel 40 downward and compress the spring III 41.

[0070] Reference Figure 10 and Figure 11 The plug sleeve 30 has a circular groove 34 on the side away from the slide plate 31. A lead screw 36 is fixed on the inner wall of one side of the circular groove 34. A rotating nut 35 is threaded on the outer wall of the lead screw 36. A rotating ring II 37 is rotatably connected to the side of the rotating nut 35 close to the slide plate 31. Multiple steel cables 38 are fixed on one side of the rotating ring II 37. One end of each of the multiple steel cables 38 is fixedly connected to the slide plate 31.

[0071] When it is necessary to remove two adjacent drill rods 14, rotate the rotating nut 35. The rotating nut 35 drives the rotating ring II 37 to move outward. The rotating ring II 37 pulls the slide plate 31 outward through the steel cable 38, releasing the engagement between the trapezoidal tooth II 33 and the trapezoidal tooth I, thereby releasing the brake between the two adjacent drill rods 14, and enabling the removal of the two adjacent drill rods 14.

[0072] In another embodiment: Refer to Figure 12 An improvement upon Embodiment 1: The base rod 15 has a mounting cavity at its bottom end. An electric push rod 44 is fixed to the top inner wall of the mounting cavity. The electric push rod 44 is a high-precision servo electric push rod (IP67 protection rating), capable of precisely controlling the extension and retraction displacement of the output shaft. The drill bit 16 has a receiving cavity 46. The output shaft of the electric push rod 44 extends into the receiving cavity 46 and is fixed with a positioning cone 45. The bottom of the drill bit 16 has a feed inlet communicating with the receiving cavity 46. The bottom end of the positioning cone 45 is sealed and slides through the feed inlet. A battery is provided within the mounting cavity to provide power to the electric push rod 44.

[0073] When sampling is required during drilling, the hydraulic cylinder 3 moves the base rod 15, drill bit 16, and multiple drill pipes 14 upwards a certain distance, creating a gap between the drill bit 16 and the bottom of the well. Then, the electric push rod 44 moves the positioning cone 45 upwards, releasing the seal on the feed inlet at the bottom of the receiving cavity 46. Rock fragments and geothermal energy from the well flow into the receiving cavity 46, completing the sampling operation. The positioning cone 45 then moves downwards again to seal the feed inlet, preventing sample leakage.

[0074] Equipment and methods for exploring geothermal resources, including the following steps:

[0075] S1. Place the base 1 at the drilling position. During drilling, the output shaft of the hydraulic cylinder 3 pushes the lifting platform 6 and the hexagonal platform I7 to move down. The hexagonal platform I7 extends into the hexagonal slot 23 at the top of the adjacent drill rod 14, which is used to drive the drill rod 14, the base rod 15 and the drill bit 16 to move down for drilling operations. The rotating rod 11 is driven to rotate by the motor. The rotating rod 11 and the synchronous pulley II 10 can drive the synchronous pulley II 10 to rotate through the sliding cooperation of the slide groove and the slider. The synchronous pulley II 10 and the synchronous pulley I 8 are connected by the synchronous belt drive, so the rotating ring I 5 is driven to rotate, which drives the lifting platform 6 and the hexagonal platform I 7 to rotate synchronously. The docking of the hexagonal slot 23 and the hexagonal platform I 7 can drive the drill rod 14, the base rod 15 and the drill bit 16 to rotate, so the drill bit 16 can rotate and move down for drilling operations.

[0076] S2. When the thrust plate 4 moves down and fits against the top of the lower plate 13, the number of drill rods 14 needs to be increased to further increase the drilling depth. Specifically, the hydraulic cylinder 3 drives the thrust plate 4 to move up and reset via the lifting platform 6 until the limit block 22 touches the upper plate 12. At this time, the bottom of the thrust plate 4 is flush with the bottom of the upper plate 12, and the hexagonal platform I7 is stored inside the thrust plate 4. In addition, the top of the drill rod 14 inserted into the ground is flush with the top of the lower plate 13. Then, the motor drives the screw I21 to rotate. The screw I21 is threadedly connected to the U-shaped bracket 20. The U-shaped bracket 20 pushes the drill rod 14 towards a certain direction through the end cover plate 19, the guardrail 17, and the partition plate 18. The drill rods move laterally, and multiple partition plates 18 are located between two adjacent drill rods 14. The partition plates 18 can stably push multiple drill rods 14 until the leftmost drill rod 14 moves to the top of the drill rod 14 inserted into the ground. The upper plate 12, the thrust plate 4, the lower plate 13, and the drill rod 14 inserted into the ground limit the moving drill rod 14, thereby ensuring that the drill rod 14 on the lower plate 13 can move smoothly between the thrust plate 4 and the drill rod 14 inserted into the ground. The hexagonal platform II 28 inside the drill rod 14 is inserted into the hexagonal slot 23 at the top of the drill rod 14 on the ground under the action of the spring I 27, thus initially completing the docking of two adjacent drill rods 14.

[0077] S3, the output shaft of the propulsion hydraulic cylinder 3 pushes the lifting platform 6 and the hexagonal platform I7 downwards. The hexagonal platform I7 extends into the hexagonal slot 23 at the top of the adjacent drill rod 14. The motor drives the rotating rod 11 to rotate. The rotating rod 11 drives the drill rod 14 to rotate synchronously through the cooperation of the synchronous pulley II 10, the synchronous pulley I 8 and the synchronous belt. Since the rubber wheel 40 slides on the outer wall of the screw II 39 through the groove and the slider, and the rubber wheel 40 abuts against the outer wall of the anti-slip ring 47, when the drill rod 14 rotates, the cooperation between the rubber wheel 40 and the anti-slip ring 47 keeps the anti-slip ring 47 in a stationary state. Nut seat 29 is threaded to boss 48. Therefore, nut seat 29 pushes plug sleeve 30 down and extends into limit groove 24. As plug sleeve 30 moves down, trapezoidal tooth II 33 moves into plug sleeve 30 under the action of trapezoidal tooth I 25 and squeezes spring II 32. When plug sleeve 30 moves down to the bottom inner wall of limit groove 24, the elastic force of spring II 32 pushes trapezoidal tooth II 33 to move and engage with trapezoidal tooth I 25, thereby further engaging two adjacent drill pipes 14 to ensure the stability between the two adjacent drill pipes 14. After that, drilling operation can continue.

[0078] S4. When it is necessary to collect rock formations and geothermal sources in the well, the hydraulic cylinder 3 drives the base rod 15, drill bit 16 and multiple drill rods 14 to move upward a certain distance, so that there is a gap between the drill bit 16 and the bottom of the well. Then the electric push rod 44 drives the positioning cone 45 to move upward, releasing the seal on the feed inlet at the bottom of the accommodating cavity 46. Rock fragments and geothermal sources in the well flow into the accommodating cavity 46 to complete the sampling operation. Then the positioning cone 45 moves downward again to seal the feed inlet.

[0079] S5. When it is necessary to remove the drill rod 14, rotate the rotating nut 35. The rotating nut 35 drives the rotating ring II 37 to move outward. The rotating ring II 37 pulls the slide plate 31 outward through the steel cable 38, releasing the engagement between the trapezoidal tooth II 33 and the trapezoidal tooth I 25, thereby releasing the brake between the two adjacent drill rods 14 and enabling the removal of the two adjacent drill rods 14.

[0080] It should be noted that, given that those skilled in the art possess the relevant professional knowledge and technical background, the working principles and wiring methods of the electric push rod 44 and the propulsion hydraulic cylinder 3 are conventional technical means and common knowledge in this field. Those skilled in the art can reasonably select and match the electric push rod 44 and the propulsion hydraulic cylinder 3 based on actual engineering needs or operational convenience considerations; therefore, this patent text will not elaborate further on the above content.

[0081] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0082] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. Apparatus for the exploration of geothermal resources, characterised in that, The utility model relates to a drilling device, including: Base (1), the top of base (1) is fixed with top cover plate (2) through support column, rotating link is connected with rotary rod (11) between base (1) and top cover plate (2); Drilling structure, by base rod (15), drill bit (16) and a plurality of drill rod (14) are formed, drill bit (16) is fixed to base rod (15) bottom end, and the first clamping structure is equipped with in base rod (15) top end and drill rod (14) top, and the second clamping structure is equipped with in drill rod (14) bottom end, the first clamping structure is inserted with the second clamping structure and is clamped together; Driving structure, be equipped with in thrust disc (4), including rotating link's rotary ring I (5) and sliding link's lifting platform (6), the bottom fixed with the hexagonal platform I (7) of first clamping structure insertion cooperation of lifting platform (6); Add rod structure, be equipped with between base (1) and top cover plate (2), including with fixed connection's lower plate (13) of base (1) and with fixed connection's upper plate (12) of top cover plate (2), the lower plate (13) is driven U-shaped support (20) by screw rod I (21) and pushes drill rod (14) and moves; Wherein, rotary rod (11) is driven rotary ring I (5) rotation through synchronous pulley II (10), synchronous pulley I (8) drive rotary rod (11), and drive drilling structure rotation;The output shaft of advance hydraulic cylinder (3) is fixed to lifting platform (6) and is inserted in top cover plate (2), and drives drilling structure and moves down; The first clamping structure includes the hexagonal slot (23) of being equipped with in drill rod (14) top end, and the plurality of trapezoidal teeth I (25) of being equipped with in the limiting slot (24) of drill rod (14) outer wall; The second clamping structure includes the boss (48) of being fixed to drill rod (14) bottom end, the hexagonal slide groove (26) is equipped with in boss (48), and the hexagonal platform II (28) of insertion cooperation of hexagonal slot (23) is slidably connected in hexagonal slide groove (26), and the hexagonal platform II (28) is through spring I (27) and is abutted the top of hexagonal slide groove (26); The boss (48) outer wall is threadedly connected with the nut seat (29), and the nut seat (29) bottom end is slidably connected with a plurality of insertion sleeves (30), and the insertion sleeve (30) is connected with the slide plate (31) of trapezoidal teeth II (33) through spring II (32) in it; Wherein, when drill rod (14) rotates, the nut seat (29) pushes the insertion sleeve (30) and extends into the limiting slot (24), and the trapezoidal teeth II (33) are locked with the trapezoidal teeth I (25) and are adjacent drill rod (14);The insertion sleeve (30) one side is equipped with circular slot (34), and the screw rod (36) is fixed in circular slot (34), and the screw rod (36) is threadedly connected with the rotary nut (35), and the rotary nut (35) is connected with a plurality of steel cables (38) through rotary ring II (37), and the steel cable (38) is fixed to the slide plate (31); The rotary nut (35) drives the steel cable (38) and pulls the slide plate (31), and the trapezoidal teeth II (33) are removed with the trapezoidal teeth I (25) and are clamped together.

2. Apparatus for the exploration of geothermal resources according to claim 1, characterised in that, The driving structure further includes synchronous pulley II (10) that rotates in connecting support (9) top, and synchronous pulley II (10) is slidably connected on the outer wall of rotary rod (11) through slide groove sliding block The outer wall of the rotating ring I (5) is fixedly sleeved with a synchronous pulley I (8), and the synchronous pulley I (8) is in transmission connection with a synchronous pulley II (10) through a synchronous belt.

3. Apparatus for the exploration of geothermal resources according to claim 2, characterised in that, The end cover plate (19) is connected with two guardrails (17) provided with the partition plates (18), and the drill pipe (14) is accommodated between the adjacent partition plates (18); The screw rod I (21) is threaded through the U-shaped support (20) to drive the drill pipe (14) to move to the lower side of the thrust disc (4).

4. Apparatus for the exploration of geothermal resources according to claim 3, characterised in that, The limit block (22) is arranged on one side of the thrust disc (4) and cooperates with the upper plate (12) to make the bottom of the thrust disc (4) flush with the bottom of the upper plate (12).

5. Apparatus for the exploration of geothermal resources according to claim 4, characterised in that, The screw rod II (39) is fixed to the top of the base (1), and the outer wall of the screw rod II (39) is slidably sleeved with a rubber wheel (40), and the rubber wheel (40) is connected with the base (1) through a spring III (41); The outer wall of the anti-skid ring (47) is provided with anti-skid vertical stripes.

6. Apparatus for the exploration of geothermal resources according to claim 5, characterized in that, characterized in that, The bottom end of the base rod (15) is provided with a mounting cavity, and the electric push rod (44) is fixed in the mounting cavity; The drill bit (16) is provided with a containing cavity (46), and the output shaft of the electric push rod (44) is fixed with a positioning cone (45) which is slidably sealed in the feeding port; The positioning cone (45) is moved upward to open the feeding port, and the containing cavity (46) collects rock fragments and geothermal sources.

7. A method of using the apparatus for exploration of geothermal resources according to claim 6, applied to the apparatus for exploration of geothermal resources according to claim 6, characterized in that, The method comprises the following steps: S1, initial drilling: place the base (1) at the drilling site, start the advancing hydraulic cylinder (3) to lower the lifting platform (6) and the hexagonal platform I (7), and make the hexagonal platform I (7) inserted into the hexagonal clamping groove (23) at the top of the first drill pipe (14); start the motor to drive the rotating ring I (5) through the rotating rod (11), the synchronous pulley II (10) and the synchronous pulley I (8), drive the lifting platform (6) and the hexagonal platform I (7) to rotate, thereby driving the drill pipe (14), the base rod (15) and the drill bit (16) to rotate and drill down; S2, drill pipe adding preparation: when the thrust disc (4) touches the top of the lower plate (13), the advancing hydraulic cylinder (3) raises the lifting platform (6) and the thrust disc (4) to reset to the limit block (22) touching the upper plate (12), the hexagonal platform I (7) is retracted, and the top of the drilled drill pipe (14) is flush with the top of the lower plate (13); S3, new drill rod splices and locking: drive screw rod I (21) rotation, through the U-shaped support (20), end cover plate (19), guardrails (17) and partition plate (18) will be connected to the drill pipe (14) lateral transport to the drill pipe (14) above and limit; new drill pipe (14) hex platform II (28) under the action of spring I (27) inserted into the hex slot (23) of the lower drill pipe (14) preliminary butt joint; push hydraulic cylinder (3) six hex platform I (7) inserted into the hex slot (23) of the new drill pipe (14) top; start the motor drive drill pipe (14) rotation, with drill pipe (14) rotation, nut seat (29) and boss (48) thread cooperation drive plug-in sleeve (30) down into the limit slot (24), its inner trapezoidal teeth II (33) extrusion by trapezoidal teeth I (25) after the shrink by spring II (32) elastic force and trapezoidal teeth I (25) card, locking adjacent drill pipe (14), continue to drill; S4, sampling operation: push hydraulic cylinder (3) lift drill pipe assembly to make drill bit (16) and bottom hole gap; electric push rod (44) lift positioning cone (45) open drill bit (16) cavity (46) bottom inlet, rock fragments and geothermal source into; after sampling, lower positioning cone (45) to close the inlet; S5, drill pipe removal and removal: rotate the rotating nut (35) drive rotating ring II (37) out, through the cable (38) pull the slide plate (31) inside to make trapezoidal teeth II (33) disengaged from the trapezoidal teeth I (25) card; separate and remove adjacent drill pipe (14).

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