A miniature directional plasma blast device

Abstract

The application discloses a micro directional plasma blasting device, which comprises a blasting probe, a main control module, a charging module, a discharging module and a relief module integrated in an explosion-proof box; the modules are separated by insulating partitions and connected by cables through cable ports on the insulating partitions; the volume of the explosion-proof box is between 0.1-0.3m 3 ; the main control module is connected with a remote controller through a wireless network interface, and the discharging module can be connected through a remote trigger to quickly transfer the stored electric energy of the discharging module to the blasting probe; the end of the blasting probe is connected with an energy reflecting cover, the cover surface of the energy reflecting cover is arc-shaped, the energy reflecting cover is firmly connected with the blasting probe through an adapter screw rod and an adapter screw nut, and the shock wave generated by the blasting is reflected in one direction under the action of the energy reflecting cover when the electrode discharges and blasts, so that directional blasting of a blasting structure is realized.

Description

Technical Field

[0001] This invention belongs to the fields of rock mechanics and mining engineering technology, specifically a miniature directional plasma blasting device that can be used in plasma blasting experiments. Background Technology

[0002] The fracture mechanism, crack propagation law, and explosive gas action process of brittle materials such as rocks under blasting have always been the focus of research, and similar material physics experiments are one of the important methods for studying rock and soil blasting engineering.

[0003] Due to the flammable, explosive, and highly dangerous properties of explosives, as well as their high mobility, the state has imposed strict management and control on the use of civilian explosive materials. Units without relevant qualifications are unable to obtain and use explosives and related civilian explosive materials. Most universities and research institutions do not have the relevant qualifications, and therefore cannot use explosives to conduct physical experiments on similar materials for blasting in geotechnical engineering, which greatly limits the development of such research.

[0004] To address these issues, relevant universities and research institutions are using plasma blasting experimental systems to replace traditional blasting equipment in their research. Plasma blasting involves transferring electrical energy stored in a capacitor to a discharge probe in a single step. A high-voltage pulsed arc discharge occurs between the electrodes of the probe. When this discharge occurs in water, the electrical energy is released instantaneously in a small area around the electrodes. Powerful shock waves and pressure waves propagate through the surrounding medium, thus achieving the plasma blasting process.

[0005] Compared with traditional blasting equipment, plasma blasting experimental systems have advantages such as unrestricted use, high safety, and precise controllable blasting energy. However, they also have problems such as excessively large blasting device size, inability of the blasting probe to achieve directional blasting, and uneconomical blasting devices for small-scale blasting experiments. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a miniature directional plasma blasting device that requires no explosives and is suitable for small-sized specimens, thus solving the technical problems of excessively large plasma blasting devices and directional blasting of the blasting probe.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A miniature directional plasma blasting device includes a main control module, a charging module, a discharging module, a venting module, and a blasting probe, all four modules integrated in a specially designed explosion-proof enclosure. The charging module charges the discharging module. After charging is complete, the charging module sends a signal to the main control module, which then shuts down the charging module's output and sends a switch signal to the discharging module, which then discharges the blasting probe. The high-voltage electrical energy stored in the discharging module can be output to the high-voltage electrode of the blasting probe via an output cable in an extremely short time, instantly ionizing the metal wire at the end of the high-voltage electrode and rapidly releasing the stored high-voltage electrical energy in an explosive manner, thus achieving the plasma blasting process.

[0011] Preferably, the discharge module is used to release excess electrical energy from the discharge module after the discharge is completed. In the event of power failure, standby, or abnormal error, the discharge module will remain in a conductive state to ensure that there is no additional energy stored in the discharge module. The plasma blasting system is equipped with a general grounding wire, whose main function is to safely discharge components such as the main control module, charging module, and discharge module after the plasma blast is completed. The plasma blasting system also has a high-current grounding wire, whose main function is to safely discharge any remaining electrical energy in high-voltage storage and discharge components such as the discharge module, blasting probe, and high-voltage electrodes after the blast is completed.

[0012] Preferably, the main control module can be connected to a remote controller via a wireless network interface, and the remote controller can turn on the switch of the discharge module via a remote trigger to quickly transfer the electrical energy stored in the discharge module to the blasting probe.

[0013] Preferably, the capacitor of the discharge module has a capacitance of 50μF and can accumulate electrical energy at a voltage of 0-22kV.

[0014] Preferably, the modules of the blasting device are separated by insulating partitions and connected by cables through cable ports on the insulating partitions. The explosion-proof box has a volume of 0.1-0.3 m³. 3 between.

[0015] Preferably, the blasting probe has a high-voltage electrode inside, which passes through the center of the blasting probe. A steel pipe (serving to protect the blasting probe) is installed on the outside of the probe. The space between the steel pipe and the high-voltage electrode is filled with insulating plastic. When electrical energy exceeding a certain voltage level is charged into the capacitor of the discharge module, the discharge module instantly transfers the electrical energy to the blasting probe. The transferred electrical energy is discharged through the high-voltage electrode at the end of the blasting probe. The rock mass is destroyed by the strong shock wave and the volume expansion of the fluid.

[0016] Preferably, the end of the blasting probe is connected to an energy reflector. When the high-voltage electrode discharges and blasts, the shock wave generated by the blast will be reflected in one direction under the action of the energy reflector, thereby achieving directional blasting of the blasting structure.

[0017] Preferably, the energy reflector is made of alloy steel, thereby ensuring high strength and good explosion resistance. The diameter of the end of the energy reflector is slightly larger than the diameter of the blasting probe. The surface of the energy reflector has an insulating coating, which provides strong rigidity and explosion resistance. Four symmetrically distributed adapter nuts are provided on the energy reflector, with an included angle of 90 degrees between the nuts. The energy reflector is firmly connected to the blasting probe through adapter screws.

[0018] Preferably, the energy reflector is replaceable, and the surface of the energy reflector is curved, which allows more of the shock wave generated by the explosion to be released toward the target structure. The curvature of the curved surface can be adjusted according to the size of the structure to be blasted, so as to target different structures.

[0019] The beneficial effects of this invention are:

[0020] (1) The main control module, charging module, discharging module, and venting module of this miniature directional plasma blasting device are integrated in a specially designed explosion-proof box, which is connected by cables through cable ports on the insulating partition. The volume of the explosion-proof box is 0.1-0.3 m³. 3 Between these, they are small in size and easy to move.

[0021] (2) The miniature directional plasma blasting device has a discharge module with a capacitance of 50μF, which can accumulate electrical energy of 0-22kV voltage. It can be connected to a remote controller through a wireless network interface. The blasting operation is simple and safe, and it can better carry out indoor small-scale blasting experiments.

[0022] (3) The energy reflector of this miniature directional plasma blasting device is made of alloy steel. The surface of the energy reflector is arc-shaped and the curvature of the arc can be adjusted according to the size of the blasting structure. The energy reflector can be replaced to target different blasting structures.

[0023] (4) The miniature directional plasma blasting device is equipped with four symmetrically distributed adapter nuts. The energy reflector is firmly connected to the blasting probe through the adapter screw. When the high-voltage electrode discharges and blasts, the shock wave generated by the blast will be reflected in one direction under the action of the energy reflector, so as to achieve directional blasting of the blasting structure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the blasting probe of the present invention;

[0026] Figure 3 This is a front view of the combination of the blasting probe and the energy reflector of the present invention;

[0027] Figure 4 This is a left view of the explosive probe and energy reflector assembly of the present invention;

[0028] Figure 5 This is a right view of the combination of the blasting probe and the energy reflector of the present invention.

[0029] In the diagram: 1. Main control module, 2. Charging module, 3. Discharge module, 4. Discharge module, 5. Cable, 6. Explosion probe, 7. Energy reflector, 8. Explosion-proof box, 9. Ordinary grounding wire, 10. Remote controller, 11. Wireless network interface, 12. Insulating partition, 13. Model box, 14. Explosion structure, 15. Shock wave, 16. High voltage electrode, 17. Adapter nut, 18. Adapter screw, 19. End of energy reflector, 20. Steel pipe, 21. High current grounding wire, 22. Energy reflector cover. Detailed Implementation

[0030] 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, and 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.

[0031] like Figure 1-4 As shown, a miniature directional plasma blasting device includes a main control module 1, a charging module 2, a discharging module 4, a venting module 3, and a blasting probe 6. These four modules are integrated into a specially designed explosion-proof enclosure. Each module is separated by an insulating partition 12, which has cable ports. The modules are connected by cables 5. The explosion-proof enclosure is a sealed space with a volume of 0.1-0.3 m³. 3 The capacitor in the plasma blasting device has a capacitance of 50μF and can accumulate electrical energy at a voltage of 0-22kV. The main control module 1 can be connected to the remote controller 10 via a wireless network interface 11. The charging module 2 charges the capacitor. After charging is complete, the charging module 2 sends a signal to the main control module 1, which then shuts down the output of the charging module 2 and sends a signal to the discharge module 4 to discharge. The high-voltage electrical energy stored in the discharge module 4 is output to the blasting probe 6 via the cable 5 in a very short time. The high-voltage electrode 16 rapidly releases the high-voltage electrical energy in an explosive manner, realizing the plasma blasting process. A steel pipe 20 is provided on the outside of the blasting probe 6, and the space between the steel pipe 20 and the high-voltage electrode 16 is filled with insulating plastic.

[0032] The end of the blasting probe 6 is connected to the energy reflector 7. When the high-voltage electrode 16 discharges and blasts, the shock wave 15 generated by the blast will be reflected in one direction under the action of the energy reflector 7, thereby achieving directional blasting of the blasting structure 14. The structure will be destroyed by the strong shock wave 15 and the volume expansion of the fluid.

[0033] The energy reflector 7 is made of alloy steel. The surface 22 of the energy reflector is arc-shaped, and the curvature of the arc can be adjusted according to the size of the blasting structure. It can be replaced to target different blasting structures. The diameter of the end 19 of the energy reflector is slightly larger than the diameter of the blasting probe 6. Four symmetrically distributed adapter nuts 17 are provided on the energy reflector, with an included angle of 90 degrees between the nuts. The blasting probe 6 and the energy reflector 7 are firmly connected by the adapter screw 18. The number of adapter nuts can be adjusted according to the actual situation.

[0034] The ordinary grounding wire 10 in the plasma blasting system mainly functions to perform safe discharge operations after the plasma blasting of components such as the main control module 1, charging module 2, and discharge module 3 is completed. The high-current grounding wire 21 mainly performs safe discharge operations on the electrical energy that may remain in high-voltage storage and discharge components such as the discharge module 4, blasting probe 6, and high-voltage electrode 16 after the blasting is completed.

[0035] In summary, when the plasma blasting equipment is in use, the remote controller 10 can control the main control module 1 to perform the blasting via a wireless network interface. The charging module 2 charges the capacitor. After charging is complete, the charging module 2 sends a signal to the main control module 1, which then shuts down the output of the charging module 2 and sends a signal to the discharge module 4. The high-voltage energy stored in the discharge module 4 is then output to the blasting probe 6 via the output cable 5 in a very short time. Each module is separated by an insulating partition 12 and connected by cable 5 through the cable port on the insulating partition 12. The explosion-proof box is a sealed space with a volume of 0.1-0.3 m³. 3 Between them, the capacitor of the plasma blasting device has a capacitance of 50μF and can accumulate electrical energy of 0-22kV voltage. The blasting probe 6 and the energy reflector 7 are tightly connected by the adapter screw 18 and four symmetrically distributed adapter nuts 17 on the end of the energy reflector 19. When the high-voltage electrode 16 discharges and blasts, the shock wave 15 generated by the blast will be reflected in one direction under the action of the energy reflector 7, realizing the directional blasting of the blasting structure 14. The structure 14 located in the model box 13 will be destroyed by the strong shock wave 15.

[0036] The blasting control method of the present invention is controlled by a remote controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, the present invention will not explain the control method and circuit connection in detail.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniature directional plasma blasting device, characterized in that: The system includes a blasting probe, and a main control module, a charging module, a discharging module, and a venting module integrated within an explosion-proof enclosure. Each module within the enclosure is separated by an insulating partition with a cable port for cable passage, and the modules are connected by cables. The explosion-proof enclosure is a sealed space. The blasting probe and the discharging module are connected by cables. The capacitor in the discharging module has a capacitance of 50µF and can accumulate electrical energy at a voltage of 0-22kV. The main control module is connected to a remote controller, which remotely controls the blasting of the plasma blasting device through the main control module. The charging module is used to charge the capacitor in the discharging module. After charging, the discharging module outputs electrical energy to the blasting probe through a cable. The blasting probe is used for directional blasting of the structure. The venting module releases excess electrical energy from the discharging module after the discharge is complete. The blasting probe is equipped with an energy reflector at its end, and the inner and outer surfaces of the energy reflector are coated with an insulating coating. The energy reflector is used to reflect the shock wave generated by the blast in one direction, thereby achieving directional blasting of the blasted structure.

2. The miniature directional plasma blasting device according to claim 1, characterized in that, The energy reflector has an arc-shaped surface and is replaceable so that the curvature of the arc surface can be adapted to the size of the explosive structure.

3. The miniature directional plasma blasting device according to claim 1, characterized in that, The energy reflector is provided with four symmetrically distributed adapter nuts. The blasting probe is connected to the adapter nuts through an adapter screw, thereby achieving a tight connection between the energy reflector and the blasting probe.

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