Deep hard rock microwave-assisted rock breaking drilling system

Abstract

The invention discloses a deep hard rock microwave-assisted rock breaking drilling system, which relates to the technical field of rock breaking and comprises a ground control and energy supply system, a flange plate main body and a microwave generator. The overall structure of the system adopts modular design, the system is formed by sequentially connecting the ground control and energy supply system, the microwave generator, the microwave transmission assembly, the microwave drill bit assembly and the cooling and sealing system, and in the using process, microwaves output by the microwave generator are transmitted to the end of a drill bit through the waveguide transmission assembly; meanwhile, the mechanical drilling driving device drives the drill bit to achieve conventional drilling operation, so that a microwave pre-splitting and mechanical crushing cooperative rock breaking mode is formed, a microwave transmission assembly in the system is arranged in a drill column, stable transmission is achieved through a sealing protection structure, and the mechanical crushing effect is achieved. The cooling system is used for reducing system temperature and guaranteeing structural safety.

Description

Technical Field

[0001] This invention relates to the field of rock breaking technology, and in particular to a microwave-assisted rock breaking drilling system for deep hard rock. Background Technology

[0002] As the exploitation of mineral and oil and gas resources continues to extend to deeper areas, deep hard rock formations generally have characteristics such as high strength, high elastic modulus, and high density. Traditional mechanical rock breaking methods have low breaking efficiency, high energy consumption, and severe drill bit wear, which seriously restricts the construction efficiency of deep engineering projects.

[0003] Common rock-breaking methods in existing technologies include rotary rock breaking, hydraulic impact rock breaking, and high-temperature thermal rock breaking, but they have the following drawbacks: 1. Mechanical rock breaking relies on the mechanical contact between the drill bit and the rock to achieve crushing, which significantly reduces the drilling speed in high-strength hard rock; 2. Although hydraulic impact rock breaking can improve the drilling speed, the equipment structure is complex, there are many vulnerable parts, and the maintenance cost is high; 3. Thermal rock breaking relies on surface heating, which has a limited depth of action and low thermal efficiency. In recent years, research has proposed using microwaves to heat and expand the rock internally to generate thermal cracks, thereby reducing the rock's compressive strength and improving the crushing efficiency. However, existing microwave rock breaking technology is mostly still in the laboratory equipment stage and lacks a system structure scheme that can be effectively integrated with drilling engineering equipment. Therefore, it is urgent to develop a microwave-assisted rock-breaking drilling system suitable for deep hard rock drilling engineering. Summary of the Invention

[0004] The purpose of this invention is to provide a microwave-assisted rock-breaking drilling system for deep hard rock, so as to solve the problems of deep hard rock drilling mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a deep hard rock microwave-assisted rock-breaking drilling system, comprising a ground control and power supply system, a flange body and a microwave generator, wherein the ground control and power supply system and the microwave generator are connected through the flange body;

[0006] The flange body is composed of a first flange and a second flange. A microwave transmission component is connected to one side of the microwave generator, and a mechanical drilling drive device is provided on one side of the microwave transmission component. A drill string is provided on the outside of the mechanical drilling drive device. A microwave irradiation wall is provided on one side of the drill string. A microwave drill bit assembly is provided on the outside of the drill string. A cooling and sealing device is provided on the outside of the microwave drill bit assembly.

[0007] Furthermore, the bottom end of the first flange is uniformly fixed with positioning blocks, and the top end of the second flange is uniformly provided with positioning grooves, and the positioning grooves are all connected to the positioning blocks.

[0008] Furthermore, slots are provided on the outer side of each positioning block, a chassis is fixed to the outer side of the microwave generator, and locking seats are slidably connected to the top of the chassis. Locking blocks are fixed to the inner side of each locking seat. Locking grooves are evenly provided on the outer side of the flange body, and each locking groove is connected to a locking block. Movable rods are hinged to the inner side of each locking seat. A turntable is connected to the top of the chassis, and the top of the turntable is hinged to the movable rod. A drive motor is fixed inside the microwave generator, and a gear is fixed to the outer side of the output shaft of the drive motor. A gear ring is fixed to the inner side of the turntable, and the gear ring and the gear are meshed together. Pins are fixed to the inner side of each locking seat.

[0009] Furthermore, guide blocks are fixed on both sides of the bottom of the turntable, and a guide groove is provided at the top of the chassis, and the guide groove is connected to the guide block.

[0010] Furthermore, a locking block is fixed to the inner side of each locking seat, and locking grooves are evenly arranged on the outer side of the flange body, and each locking groove is connected to the locking block.

[0011] Furthermore, the width of each locking block is matched with the width of the locking groove, and the cross-sections of both the locking block and the locking groove are convex.

[0012] Furthermore, the top of the chassis is uniformly fixed with slide rails, and the bottom of the locking seat is provided with slide grooves for matching the slide rails.

[0013] Furthermore, four sets of locking seats are provided, and the locking seats are arranged in a cross shape at the top of the chassis.

[0014] Furthermore, the microwave drill bit assembly includes a microwave radiation cavity and a mechanical drilling tool structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The deep hard rock microwave-assisted rock breaking drilling system adopts a modular design in its overall structure, consisting of a ground control and power supply system, a microwave generator, a microwave transmission component, a microwave drill bit assembly, and a cooling and sealing device connected in sequence. During use, the microwaves output by the microwave generator are transmitted to the drill bit end through the waveguide transmission component to achieve microwave action on the rock mass. At the same time, the mechanical drilling drive device drives the drill bit to perform conventional drilling operations, thereby forming a coordinated rock breaking method of microwave pre-splitting and mechanical crushing. The microwave transmission component in the system is set inside the drill string and achieves stable transmission through a sealed protective structure. The cooling system is used to reduce the system temperature and ensure structural safety. This embodiment has a reasonable structure, is easy to process and manufacture and install on site, and can be applied to deep hard rock drilling projects. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a front view cross-sectional structural diagram of the flange body in the locked state according to the present invention;

[0019] Figure 3 This is a schematic diagram of the chassis cross-sectional structure from top view.

[0020] Figure 4 This is a top view of the second flange structure of the present invention.

[0021] The following are the annotations in the figure: 1. Ground control and power supply system; 2. Flange body; 3. Microwave generator; 4. Microwave transmission assembly; 5. Drill string; 6. Mechanical drilling drive device; 7. Microwave irradiation wall; 8. First flange; 9. Locking seat; 10. Second flange; 11. Locking block; 12. Locking groove; 13. Pin; 14. Slot; 15. Chassis; 16. Movable rod; 17. Turntable; 18. Gear ring; 19. Gear; 20. Drive motor; 21. Positioning groove; 22. Positioning block; 23. Cooling and sealing device; 24. Microwave drill bit assembly. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-4 The present invention provides the following technical solution:

[0024] Example 1: To solve the problem of deep hard rock drilling in the prior art, the following solution is disclosed, specifically as follows: Figure 1As shown, the deep hard rock microwave-assisted rock-breaking drilling system provided in this application includes a ground control and power supply system 1, a flange body 2, and a microwave generator 3. The ground control and power supply system 1 and the microwave generator 3 are connected through the flange body 2. The flange body 2 consists of a first flange 8 and a second flange 10. A microwave transmission component 4 is connected to one side of the microwave generator 3, and a mechanical drilling drive device 6 is provided on one side of the microwave transmission component 4. A drill string 5 is provided on the outside of the mechanical drilling drive device 6. A microwave irradiation wall 7 is provided on one side of the drill string 5. A microwave drill bit assembly 24 is provided on the outside of the drill string 5. A cooling and sealing device 23 is provided on the outside of the microwave drill bit assembly 24. The microwave drill bit assembly 24 includes a microwave radiation cavity and a mechanical drilling tool structure.

[0025] In this embodiment, the system adopts a modular design in its overall structure, consisting of a ground control and power supply system 1, a microwave generator 3, a microwave transmission component 4, a microwave drill bit assembly 24, and a cooling and sealing device 23 connected in sequence. During use, the microwaves output by the microwave generator 3 are transmitted to the drill bit end through the waveguide transmission component to achieve microwave action on the rock mass. At the same time, the mechanical drilling drive device 6 drives the drill bit to perform conventional drilling operations, thereby forming a coordinated rock breaking method of microwave pre-splitting and mechanical crushing. The microwave transmission component 4 in the system is set inside the drill string 5 and achieves stable transmission through a sealed protective structure. The cooling system is used to reduce the system temperature and ensure structural safety. This embodiment has a reasonable structure, is easy to process and manufacture and install on site, and is suitable for deep hard rock drilling engineering applications.

[0026] Furthermore, compared with existing technologies, this solution improves the efficiency of hard rock breaking by combining microwave thermal fracturing with mechanical crushing, effectively reduces drill bit wear, and increases drill tool life. The waveguide-embedded structure design enhances system reliability, making it suitable for drilling operations in deep, high-stress, and high-temperature environments. The modular design of the system facilitates engineering promotion and application.

[0027] Example 2: This example, based on Example 1, achieves rapid locking, specifically as follows... Figure 2 , Figure 3 and Figure 4As shown, positioning blocks 22 are evenly fixed to the bottom of the first flange 8, and positioning grooves 21 are evenly provided to the top of the second flange 10, with each positioning groove 21 connected to the positioning block 22. Slots 14 are provided on the outer side of each positioning block 22. A base 15 is fixed to the outer side of the microwave generator 3, and a locking seat 9 is evenly slidably connected to the top of the base 15. Locking blocks 11 are fixed to the inner side of each locking seat 9. Locking grooves 12 are evenly provided to the outer side of the flange body 2, and each locking groove 12 is connected to the locking block 11. A movable rod 16 is hinged to the inner side of each locking seat 9. A turntable 17 is connected to the top of the base 15, and the top of the turntable 17 is hinged to the movable rod 16. A drive motor 20 is fixed inside the microwave generator 3, and a gear is fixed to the outer side of the output shaft of the drive motor 20. 19. A gear ring 18 is fixed on the inner side of the turntable 17, and the gear ring 18 and the gear 19 are meshed and connected. A pin 13 is fixed on the inner side of the locking seat 9. Guide blocks are fixed on both sides of the bottom end of the turntable 17. A guide groove is provided on the top of the chassis 15, and the guide groove is connected to the guide block. A locking block 11 is fixed on the inner side of the locking seat 9. Locking grooves 12 are evenly provided on the outer side of the flange body 2, and the locking grooves 12 are all connected to the locking blocks 11. The width of the locking blocks 11 matches the width of the locking grooves 12. The cross-sections of the locking blocks 11 and the locking grooves 12 are all convex. A slide rail is evenly fixed on the top of the chassis 15. A slide groove matching the slide rail is provided on the bottom of the locking seat 9. There are four sets of locking seats 9, and the locking seats 9 are arranged in a cross shape on the top of the chassis 15.

[0028] In this embodiment, during use, the positioning block 22 at the bottom of the first flange 8 is aligned with the positioning groove 21 embedded at the top of the second flange 10 to achieve rapid positioning. Then, the drive motor 20 is powered on and rotates, driving the gear 19 on the output shaft to rotate. The gear 19 meshes with the gear ring 18 on the inner side of the turntable 17, driving the turntable 17 to rotate at the top of the chassis 15. The turntable 17 pushes four sets of locking seats 9 arranged in a cross shape through the hinged movable rod 16, making radial synchronous displacement along the slide rail at the top of the chassis 15, so that the locking block 11 on the inner side of the locking seat 9 is inserted into the locking groove 12 on the outer side of the flange body 2. At the same time, the pin 13 on the inner side of the locking seat 9 is inserted into the slot 14 on the outer side of the positioning block 22, finally realizing the all-round clamping and locking of the flange body 2 and the microwave generator 3. When disassembling, the drive motor 20 rotates in the opposite direction, which can drive each locking component to disengage synchronously and complete the rapid unlocking.

[0029] Furthermore, the precise alignment is achieved through the cooperation of the positioning block 22 and the positioning groove 21, effectively reducing assembly and adjustment time. At the same time, it can automatically clamp and lock simultaneously, and the locking action is completed in one integrated manner. Through precise positioning and firm locking, the internal core structures such as the drill string 5 and the microwave transmission component 4 can be prevented from shifting due to loose connections, ensuring stable operation of microwave transmission and mechanical drilling operations, improving the overall reliability of the system, and significantly reducing the intensity of manual operation. Connection can be completed without special tooling, further adapting to the modular design of the system, and facilitating on-site installation and engineering promotion and application.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A deep hard rock microwave-assisted rock-breaking drilling system, comprising a ground control and power supply system (1), a flange body (2) and a microwave generator (3), wherein the ground control and power supply system (1) and the microwave generator (3) are connected through the flange body (2); Its features are: The flange body (2) is composed of a first flange (8) and a second flange (10). A microwave transmission component (4) is connected to one side of the microwave generator (3), and a mechanical drilling drive device (6) is provided on one side of the microwave transmission component (4). A drill string (5) is provided on the outside of the mechanical drilling drive device (6). A microwave irradiation wall (7) is provided on one side of the drill string (5). A microwave drill bit assembly (24) is provided on the outside of the drill string (5). A cooling and sealing device (23) is provided on the outside of the microwave drill bit assembly (24).

2. The deep hard rock microwave-assisted rock-breaking drilling system according to claim 1, characterized in that: The bottom end of the first flange (8) is uniformly fixed with positioning blocks (22), and the top end of the second flange (10) is uniformly provided with positioning grooves (21), and the positioning grooves (21) are all connected to the positioning blocks (22).

3. The deep hard rock microwave-assisted rock-breaking drilling system according to claim 2, characterized in that: The outer side of each positioning block (22) is provided with a slot (14), the outer side of the microwave generator (3) is fixed with a chassis (15), and the top of the chassis (15) is evenly slidably connected with a locking seat (9). The inner side of each locking seat (9) is fixed with a locking block (11). The outer side of the flange body (2) is evenly provided with locking grooves (12), and each locking groove (12) is connected to a locking block (11). The inner side of each locking seat (9) is hinged with a movable rod (14). 6) The top of the chassis (15) is connected to a turntable (17), and the top of the turntable (17) is hinged to the movable rod (16). The microwave generator (3) is fixed with a drive motor (20), and a gear (19) is fixed on the outside of the output shaft of the drive motor (20). A gear ring (18) is fixed on the inside of the turntable (17), and the gear ring (18) and the gear (19) are meshed. A pin (13) is fixed on the inside of the locking seat (9).

4. The deep hard rock microwave-assisted rock-breaking drilling system according to claim 3, characterized in that: Guide blocks are fixed on both sides of the bottom of the turntable (17), and a guide groove is provided on the top of the chassis (15), and the guide groove is connected to the guide block.

5. The deep hard rock microwave-assisted rock-breaking drilling system according to claim 3, characterized in that: Locking blocks (11) are fixed on the inner side of each locking seat (9), and locking grooves (12) are uniformly arranged on the outer side of the flange body (2), and the locking grooves (12) are all connected to the locking blocks (11).

6. The deep hard rock microwave-assisted rock-breaking drilling system according to claim 5, characterized in that: The width of the locking block (11) is matched with the width of the locking groove (12), and the cross-sections of the locking block (11) and the locking groove (12) are both convex.

7. A deep hard rock microwave-assisted rock-breaking drilling system according to claim 3, characterized in that: The top of the chassis (15) is uniformly fixed with slide rails, and the bottom of the locking seat (9) is provided with slide grooves for matching the slide rails.

8. A deep hard rock microwave-assisted rock-breaking drilling system according to claim 3, characterized in that: The locking seat (9) is provided in four sets, and the locking seat (9) is arranged in a cross shape at the top of the chassis (15).

9. A deep hard rock microwave-assisted rock-breaking drilling system according to claim 1, characterized in that: The microwave drill bit assembly (24) includes a microwave radiation cavity and a mechanical drilling tool structure.

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