A high-voltage electric pulse ignition type electronic detonator

Abstract

The present invention discloses a high-voltage electric pulse ignition type electronic detonator, belonging to the technical field of civil explosive chemicals, and solving the problems that existing electronic detonators require primer heads, the production process is complex and cumbersome, and misfiring occurs. A high-voltage electric pulse ignition type electronic detonator of the present invention includes a detonator shell, one end of the detonator shell is closed, and the other end is provided with an opening. A primary charge, a secondary charge, and a detonating charge are sequentially filled at the closed end of the detonator shell. An electronic control module is arranged inside the detonator shell, and an energy storage communication module and a total control system are arranged outside the detonator shell; the electronic control module includes an ignition needle, a working capacitor, an ignition switch, and a single-chip microcomputer. The ignition needle is a cylinder and is in direct contact with the detonating charge; the energy storage communication module includes an external communication module, an energy storage capacitor, and a one-way diode; the single-chip microcomputer is connected to the total control system, and the energy storage communication module is connected to the single-chip microcomputer. The present invention reduces the production risk of electronic detonators, improves the product reliability, and reduces the working site.

Description

Technical Field

[0001] The present invention relates to the technical field of civil explosives, and particularly to a high-voltage electric pulse ignition type electronic detonator. Background Art

[0002] While electronic detonators are being comprehensively promoted in the industry, the problems existing in existing electronic detonators are gradually emerging. Currently, the main problems of digital electronic detonators are as follows: First, the ignition element, the electronic control module, and the energy storage capacitor are all arranged inside the basic detonator. The space is severely restricted, which restricts the volume of the components and thus also limits the capacity of the energy storage capacitor. Second, the current electronic detonator ignition element consists of a bridge wire and ignition agent. During the production and use processes, when the ignition element is powered on during detection, it may cause the ignition agent attached to the ignition element to burn and then detonate the detonator, posing a safety hazard. Third, the electronic detonator ignition element requires a primer to detonate the detonator, and the production process of the primer is complex and cumbersome. Most of them require manual operation and handling. The primer requires a drying workshop or large drying equipment, and the drying time is relatively long. It not only occupies space but also consumes a high amount of energy, and it also causes the current inability to achieve full-line automated production. Third, in working environments such as small cross-sections and foundation pits, traditional electronic ignition elements are prone to problems such as the ignition bridge wire of the high-delay detonator's electronic ignition element breaking and the primer ball attached to the ignition bridge wire falling off or breaking due to the high-energy high-frequency instantaneous vibration and rock rupture caused by the prior explosion of the first-exploded blast holes during the blasting of the low-delay detonator's blast holes in front, resulting in misfires, posing a greater hidden danger to construction, etc. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and design a high-voltage electric pulse ignition type electronic detonator to directly detonate the basic detonator through a high-voltage electric pulse without a bridge wire and without an ignition agent. The production links of bridge wire welding and primer production are omitted, realizing full-line automation in the production of the electronic detonator's ignition element and the assembly of the electronic detonator finished product, reducing production risks, improving product reliability, saving energy and reducing consumption, and reducing the working site, etc.

[0004] To achieve the above purpose, the present invention mainly adopts two technical key points:

[0005] One is that the ignition needle is in direct contact with or close to the initiating explosive; the other is that to ensure that the high-voltage electric pulse energy is sufficient to detonate the basic detonator, the energy storage capacitor is moved outside the detonator shell, so as to fully expand the capacity of the energy storage capacitor.

[0006] The specific technical solutions are as follows:

[0007] A high-voltage electric pulse ignition type electronic detonator includes a detonator shell. One end of the detonator shell is closed, and the other end is provided with an opening. A primary charge, a secondary charge, and a detonating charge are sequentially filled at the closed end of the detonator shell. An electronic control module is provided inside the detonator shell, and an energy storage communication module and a total control system are provided outside the detonator shell. The electronic control module includes an ignition pin, a working capacitor, an ignition switch, and a single-chip microcomputer. The ignition pin is a cylinder and is divided into three layers. The middle layer is an insulating material, and the other two layers are copper and are in direct contact with the detonating charge. The energy storage communication module includes an external communication module, an energy storage capacitor, and a one-way diode. The single-chip microcomputer is connected to the total control system, and the energy storage communication module is connected to the single-chip microcomputer (5.4).

[0008] Preferably, the single-chip microcomputer is sequentially connected to the total control system through a PCB board, a leg wire, and a blasting busbar. The energy storage communication module is connected to the single-chip microcomputer through a PCB board.

[0009] Preferably, a strengthening cap is pressed into the detonating charge.

[0010] Preferably, the distance between the ignition pin and the ignition hole of the strengthening cap is less than 2 mm

[0011] The leg wire is connected to the PCB board through a pad.

[0012] The pad, one end of the leg wire, the electronic control module, and the energy storage communication module are integrally encapsulated by injection molding to form an injection plastic head.

[0013] The total control system includes a display screen, a power button, and a mode button.

[0014] A handheld device can be added outside the total control system. The handheld device can be wirelessly connected to the total control system. The handheld device includes a display screen, relevant integrated modules, a CPU, a power supply, etc. The handheld device can control the total control system to detonate the detonator according to a set program.

[0015] The leg wire is connected to the blasting busbar through a wire clip.

[0016] The working principle of the present invention is to use a high-voltage electric pulse to detonate the detonating charge and then detonate the detonator. The ignition element uses an ignition pin. The electronic control module is placed inside the detonator shell for detonating information management and delay control. The energy storage communication module is placed outside the detonator shell for communication matching with the electronic control module and providing detonation pulse energy to detonate the detonator.

[0017] The electronic control module includes an ignition pin, a working capacitor, an ignition switch, and a single-chip microcomputer, and is composed of a high-precision timing circuit, a communication circuit, a safety protection circuit, a password management circuit, a high-energy conversion circuit, and a high-energy ignition pin. Before detonation, it must pass the detection of various safety management function programs. Otherwise, the energy storage communication module cannot work and cannot trigger the ignition pin to fire, so as to achieve safety management.

[0018] The electronic control module is connected to the blasting bus of the total control system through a line card. The energy storage communication module is used to store ignition electric energy and communicate with the built-in control module. After the matching check is normal, it can be charged and stored, so as to achieve safety management. The blasting command is sent through the total control system or a handheld device to detonate the detonator. The voltage of the energy storage communication module is between 1000V and 2000V (depending on the sensitivity of the primary explosive selected for the detonator).

[0019] The blasting bus is connected to the total controller, and the total controller supplies power to the blasting bus. The delay time of the electronic control module is set by the total control system. A wireless handheld device can also be connected outside the total control system to achieve remote control.

[0020] The handheld device is connected to the total control system through a wireless connection method. Through the handheld device, remote operation can be carried out to realize functions such as online checking of detonator communication, setting delay time, and GPS positioning.

[0021] The working process of the present invention is as follows: After all components are successfully connected, operations such as online input and setting of the delay time are carried out through the handheld device, and power is provided through the total control system; the single-chip microcomputer on the electronic control module detects various safety management function programs. After passing the detection, the total control system can charge the external energy storage capacitor; after the charging is completed, the blasting command is sent to the electronic control module through the total control system, the ignition switch is closed, and the external energy storage capacitor transfers the energy to the ignition part through the PCB board, and the ignition needle generates a high-voltage electric pulse to detonate the detonator.

[0022] After adopting the present invention, the high-voltage electric pulse is used to detonate the electronic detonator, and compared with the original method of using a medicine ball to detonate the electronic detonator, the following beneficial effects are obtained:

[0023] First, the ignition element has no bridge wire and no primer, eliminating the process of detecting the continuity of the bridge wire, and avoiding potential safety hazards such as misfires caused by the combustion of the primer attached to the ignition element when the ignition element is energized during production and use. Second, there is no risk of misfire caused by the fragmentation and shedding of the medicine ball or the breakage of the bridge wire of the ignition element during use, which helps to protect the electronic control module and can solve the problem of misfire of products during small-section and foundation pit blasting. Third, using the high-voltage electric pulse initiation method, the ignition element does not need to be coated with flammable and explosive chemical agents, which is beneficial to production safety. Fourth, the production links of bridge wire welding and primer production head are omitted, realizing the automation of the whole production line of the ignition element of the electronic detonator and the assembly of the electronic detonator finished product, reducing production risks, improving product reliability, saving energy and reducing consumption, and reducing the working site. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a high-voltage electric pulse ignition type electronic detonator of the present invention;

[0025] Figure 2 This is the circuit schematic diagram of a high-voltage electric pulse ignition type electronic detonator of the present invention.

[0026] The various identifications in the figure represent:

[0027] 1. Primary charge 2. Secondary charge 3. Initiating explosive 4. Detonator shell 5. Electronic control module 6. PCB board 7. Injection plastic head 8. Energy storage and communication module 9. Leg wire 10. Wire clip 11. Blasting busbar 12. Total control system

[0028] 5.1. Ignition pin 5.2. Working capacitor 5.3. Ignition switch 5.4. Single-chip microcomputer

[0029] 8.1. External communication module 8.2. Energy storage capacitor 8.3. Unidirectional diode

[0030] 8.4 Pad 9.1. Wire core 9.2. Insulation layer Specific implementation mode

[0031] As Figure 1 shown, a high-voltage electric pulse ignition type electronic detonator mainly includes a basic detonator, an energy storage and communication module 8, an electronic control module 5, a total control system 12, a handheld device, etc. The basic detonator includes a detonator shell 4, one end of the detonator shell 4 is closed, and the other end is provided with an opening. A primary charge 1, a secondary charge 2, and an initiating explosive 3 are sequentially filled at the closed end of the detonator shell 4. A reinforcing cap can also be added outside the initiating explosive. An electronic control module 5 is also provided inside the detonator shell 4, and an energy storage and communication module 8 and a total control system 12 are provided outside the detonator shell 4; the electronic control module 5 includes an ignition pin 5.1, a working capacitor 5.2, an ignition switch 5.3, and a single-chip microcomputer 5.4. The ignition pin 5.1 is in direct contact with the initiating explosive 3, or the ignition pin 5.1 is close to the initiating explosive 3. If there is a reinforcing cap, the distance between the ignition pin and the ignition hole of the reinforcing cap is less than 2 mm. The ignition pin 5.1 is a cylinder, which is divided into three layers. The middle layer is an insulating material, and the other two layers are copper; as Figure 1 、 Figure 2 shown, the energy storage and communication module 8 includes an external communication module 8.1, an energy storage capacitor 8.2, a unidirectional diode 8.3, and a pad 8.4. The single-chip microcomputer 5.4 is sequentially connected to the total control system 12 through a PCB board 6, a leg wire 9, and a blasting busbar 11. The energy storage and communication module 8 is connected to the single-chip microcomputer 5.4 through the PCB board 6; both the electronic control module 5 and the energy storage and communication module 8 are arranged on the PCB board 6. The wire core 9.1 of the leg wire 9 is first welded to the pad 8.4 on the PCB board 6. One end of the PCB board 6, the leg wire 9, as well as the electronic control module 5 and the energy storage and communication module 8 are injection molded into one body through an injection plastic head 7. The leg wire 9 is connected to the blasting busbar 11 through a wire clip 10. As Figure 1As shown in the figure, the total control system 12 includes a display screen 12.1, a power button 12.2, and a mode button 12.3. A handheld device can be added outside the total control system. The handheld device includes a display screen, relevant integrated modules, a CPU, a power supply, etc. After all detonators are connected, turn on the power of the total control system and the handheld device. After successful wireless connection, the detonators can be input online, and the total control system quickly transmits the detonator information to the handheld device, where the handheld device can batch-set the delay time for detonator initiation.

[0032] The working principle of the present invention is as follows: After all components are successfully connected, operations such as online input and setting of the delay time are performed through the handheld device, and the power supply is provided by the total control system 12; the single-chip microcomputer 5.1 on the electronic control module 5 performs security password detection. After the detection is passed, the total control system 12 can charge the energy storage capacitor 8.2; after the charging is completed, a detonation instruction is sent to the electronic control module 5 through the total control system 12 to close the ignition switch 5.3, and the energy storage capacitor 8.2 transfers the energy to the ignition element 5.1 through the PCB board 6, and the ignition pin 5.1 generates a high-voltage electric pulse to detonate the detonator.

Claims

1. A high-voltage electric pulse ignition type electronic detonator, comprising a detonator shell (4), one end of the detonator shell (4) is closed, and the other end is provided with an opening. A primary charge (1), a secondary charge (2), and a primer (3) are sequentially filled at the closed end of the detonator shell (4), and it is characterized in that, Inside the detonator shell (4), there is an electronic control module (5). Outside the detonator shell (4), there are an energy storage communication module (8) and a total control system (12). The electronic control module (5) includes an ignition pin (5.1), a working capacitor (5.2), an ignition switch (5.3), and a single-chip microcomputer (5.4). The ignition pin (5.1) is a cylinder, divided into three layers. The middle layer is an insulating material, and the other two layers are copper, which are in direct contact with the primary explosive (3). The energy storage communication module (8) includes an external communication module (8.1), an energy storage capacitor (8.2), and a one-way diode (8.3). The single-chip microcomputer (5.4) is connected to the total control system (12), and the energy storage communication module (8) is connected to the single-chip microcomputer (5.4).

2. The high-voltage electric pulse ignition type electronic detonator according to claim 1, characterized in that The single-chip microcomputer (5.4) is sequentially connected to the total control system (12) through a PCB board (6), a leg wire (9), and a blasting busbar (11). The energy storage communication module (8) is connected to the single-chip microcomputer (5.4) through a PCB board (6).

3. A high-voltage electric pulse ignition type electronic detonator according to claim 1 or claim 2, characterized in that A reinforcing cap is also pressed into the outside of the primary explosive (3).

4. The high-voltage electric pulse ignition type electronic detonator according to claim 3, characterized in that The distance between the ignition pin (5.1) and the ignition hole of the reinforcing cap is less than 2 mm.

5. The high-voltage electric pulse ignition type electronic detonator according to claim 2, characterized in that The leg wire (9) is connected to the PCB board (6) through a pad (8.4).

6. The high-voltage electric pulse ignition type electronic detonator according to claim 5, characterized in that The pad (8.4), one end of the leg wire (9), the electronic control module (5), and the energy storage communication module (8) are integrally encapsulated by injection molding to form an injection plastic head (7).

7. A high-voltage electric pulse ignition type electronic detonator according to claim 1 or claim 2, characterized in that The total control system (12) includes a display screen (12.1), a power button (12.2), and a mode button (12.3).

8. A high-voltage electric pulse ignition type electronic detonator according to claim 1 or claim 2, characterized in that It also includes a handheld device, which can be wirelessly connected to the total control system.

9. A high-voltage electric pulse ignition type electronic detonator according to claim 2 or claim 5, characterized in that The leg wire (9) is connected to the blasting busbar (11) through a wire clip (10).

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