Plasma ignition piece and electronic detonator comprising same

Abstract

The invention discloses a plasma ignition part and an electronic detonator comprising the same, and belongs to the technical field of initiating explosive devices. The circuit board comprises a double-sided insulating substrate, a first surface of the double-sided insulating substrate is provided with a first metal foil and a second metal foil, the first metal foil is provided with a first wire connecting structure, and the second metal foil is provided with a second wire connecting structure; the first surface of the double-sided insulating substrate is also provided with a metal foil bridge; a metal foil III and a metal foil IV are arranged on the second surface of the double-sided insulating substrate, a wire connecting structure III is arranged on the metal foil III, the wire connecting structure III is connected with the wire connecting structure I through a conductive structure I, and a reinforcing connecting structure I is connected between the metal foil I and the metal foil III; the fourth metal foil is provided with a fourth wire connecting structure, the fourth wire connecting structure is connected with the second wire connecting structure through a second conductive structure, and a second reinforcing connecting structure is connected between the third metal foil and the fourth metal foil. The plasma ignition piece is beneficial to improving the firmness of the metal foil attached to the double-sided insulating substrate.

Description

Technical Field

[0001] The invention relates to the technical field of pyrotechnics, and in particular to a plasma ignition component and an electronic detonator containing the same. Background Art

[0002] At present, electronic detonators are widely used in tunnel excavation, hazard removal blasting, demolition blasting, ore-rock separation, open-pit mine blasting and other occasions. The existing electronic detonators mainly include leg lines, plastic plugs, control modules, ignition bridge wires with ignition powder, basic powder and basic tube shell, etc. Among them, the basic powder is the core charge in the existing electronic detonators. The basic powder usually uses dinitrodiazophenol (DDNP) as the explosive, which has high friction sensitivity to impact and explodes when exposed to fire. Electronic detonators filled with the above-mentioned explosives have the risk of explosion during daily production, transportation, storage and use in blasting projects.

[0003] Furthermore, the ignition powder in the existing electronic detonators is wrapped on the ignition bridge wire, and the ignition powder is easily broken by vibration during the production and transportation process, and the ignition bridge wire is easily detached during the production and transportation process, which causes the electronic detonator to refuse to explode; in addition, during the detonation process of the electronic detonator, the electronic detonator detonated in the early stage will generate strong interference signals and strong vibration waves, which can easily cause mechanical damage to the electronic detonator, causing damage to the ignition powder and the ignition bridge wire, causing the electronic detonator to refuse to explode.

[0004] In order to solve the above technical problems, a plasma ignition electronic detonator is provided in the prior art, which mainly realizes ignition through a plasma igniter. Specifically, when a high-voltage current passes through a metal foil, the metal foil discharges and quickly melts and vaporizes, and diffuses into the surrounding medium. Based on the conductive properties of the plasma of the melted and vaporized metal foil, the residual high-voltage energy of the electrodes at both ends of the metal foil forms an ion accelerator, which further accelerates the plasma to form plasma, and excites the explosive in the electronic detonator through the plasma.

[0005] Furthermore, the plasma igniter is the ignition core component of the plasma ignition electronic detonator; however, in the existing plasma igniter, the adhesion between the metal foil and the substrate is insufficient, and the metal foil is easily separated or peeled off from the substrate, which easily leads to the breakage of the metal foil bridge provided in the plasma igniter, causing the electronic detonator to refuse to explode; in addition, the amount of plasma generated by the metal foil bridge provided in the existing plasma igniter during discharge is limited, which leads to insufficient ignition performance and difficulty in reliably igniting the explosive in the electronic detonator. Therefore, there is an urgent need for a plasma ignition component that is conducive to improving the firmness of the metal foil attached to the substrate. Summary of the invention

[0006] The object of the present invention is to overcome at least one of the above-mentioned shortcomings of the prior art and to provide a plasma ignition component that is beneficial to improving the firmness of the metal foil attached to the double-sided insulating substrate; in addition, an electronic detonator is also provided.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] According to one aspect of the present application, a plasma ignition component is provided, comprising:

[0009] A double-sided insulating substrate, wherein a first metal foil and a second metal foil are provided on a first surface of the double-sided insulating substrate, the first metal foil is arranged opposite to the second metal foil, a gap first is formed between the first metal foil and the second metal foil, a first wire connection structure is provided on the first metal foil, and a second wire connection structure is provided on the second metal foil;

[0010] A metal foil bridge is also provided on the first surface of the double-sided insulating substrate, the metal foil bridge is located in the gap 1, one end of the metal foil bridge is connected to the metal foil 1, and the other end of the metal foil bridge is connected to the metal foil 2, and the metal foil bridge is used to discharge outward to generate plasma;

[0011] A metal foil three and a metal foil four are provided on the second surface of the double-sided insulating substrate, the metal foil three is arranged opposite to the metal foil four, and the metal foil three is arranged with its back to the metal foil one, and the metal foil four is arranged with its back to the metal foil two, a gap two is formed between the metal foil three and the metal foil four, a wire connection structure three is provided on the metal foil three, the wire connection structure three is arranged with its back to the wire connection structure one and is connected to the wire connection structure one through a conductive structure one, and a reinforcement connection structure one is connected between the metal foil one and the metal foil three; a wire connection structure four is provided on the metal foil four, the wire connection structure four is arranged with its back to the wire connection structure two and is connected to the wire connection structure two through a conductive structure two, and a reinforcement connection structure two is connected between the metal foil three and the metal foil four.

[0012] The beneficial effects of the present invention are as follows: a reinforcing connection structure 1 is connected between metal foil 1 and metal foil 3 in this embodiment, and the firmness of metal foil 3 and metal foil 1 attached to the double-sided insulating substrate can be improved by reinforcing connection structure 1; similarly, a reinforcing connection structure 2 is connected between metal foil 2 and metal foil 4, and the firmness of metal foil 4 and metal foil 2 attached to the double-sided insulating substrate can be improved by reinforcing connection structure 2; thereby, the metal foil is prevented from detaching or peeling off from the double-sided insulating substrate, causing the metal foil bridge to break, and further preventing the metal foil bridge from breaking and causing the electronic detonator to fail to explode. Furthermore, a wire connection structure 3 is provided on metal foil 3, and a wire connection structure 4 is provided on metal foil 4. The wire connection structure 3 and the wire connection structure 4 can be connected to the positive and negative electrodes of the energy storage capacitor respectively by using two wires, and the energy storage capacitor is discharged to the metal foil bridge, which is conducive to the metal foil bridge discharging outward to cause an electric explosion to generate plasma, and is convenient for ignition using a plasma ignition component.

[0013] In addition, based on the above technical solution, the present invention can also make the following improvements and can also have the following additional technical features.

[0014] According to one embodiment of the present invention, the metal foil bridge comprises:

[0015] A connecting end 1 connected to the metal foil 1, wherein an end of the connecting end 1 facing the metal foil 2 extends toward the metal foil 2 to form a protruding structure 1 protruding from the metal foil 1;

[0016] A second connection end, facing the first connection end and connected to the second metal foil, an end of the second connection end facing the first metal foil extending toward the first metal foil to form a second protruding structure protruding from the second metal foil;

[0017] An explosive bridge wire is connected between the protruding structure one and the protruding structure two, and the explosive bridge wire is used for discharging outward to cause an electric explosion and generate plasma.

[0018] In this embodiment, the protruding structure one protrudes from the metal foil one, and the protruding structure two protrudes from the metal foil two, which is beneficial to improving the firmness of the connection between the metal foil bridge and the metal foil one and the metal foil two, and is beneficial to increasing the amount of plasma generated when the metal foil bridge discharges outward to cause an electric explosion; in addition, the explosive bridge wire is connected between the protruding structure one and the protruding structure two, which is beneficial to improving the firmness of the connection of the explosive bridge wire, and is beneficial to avoiding the breakage of the explosive bridge wire and ensuring the stability of the explosive bridge wire discharging outward to cause an electric explosion and generate plasma.

[0019] According to one embodiment of the present invention, the explosive bridge wire is in a bent structure. The explosive bridge wire in this embodiment is in a bent structure, which increases the length of the explosive bridge wire, thereby increasing the amount of plasma generated when the explosive bridge wire discharges outward to cause an electrical explosion, and also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition component, which is conducive to the instantaneous melting and vaporization of the explosive bridge wire to form a high-temperature, high-pressure, high-speed plasma shock wave to excite the high explosive.

[0020] According to one embodiment of the present invention, the explosive bridge wire is in a Z-shaped structure. The explosive bridge wire in this embodiment is in a Z-shaped structure, which increases the length of the explosive bridge wire, thereby increasing the amount of plasma generated when the explosive bridge wire discharges outward to cause an electrical explosion, and also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition component, which is conducive to the instantaneous melting and vaporization of the explosive bridge wire to form a high-temperature, high-pressure, high-speed plasma shock wave to excite the high explosive.

[0021] According to an embodiment of the present invention, the first connection end is in a strip shape and extends along the extension direction of the first gap, and the second connection end is in a strip shape and extends along the extension direction of the first gap. In this embodiment, the first connection end and the second connection end are in a strip shape, which increases the contact area between the metal foil bridge and the first metal foil and the second metal foil, and is conducive to increasing the amount of plasma generated when the metal foil bridge discharges outward to cause an electric explosion, thereby facilitating increasing the conductivity of the plasma and improving the ignition performance of the plasma ignition component.

[0022] According to an embodiment of the present invention, the reinforcement connection structure 1 and the reinforcement connection structure 2 are provided in plurality. In this embodiment, by providing a plurality of reinforcement connection structures 1, it is beneficial to further improve the firmness of the metal foil 3 and the metal foil 1 attached to the double-sided insulating substrate through the plurality of reinforcement connection structures 1; in addition, by providing a plurality of reinforcement connection structures 2, it is beneficial to further improve the firmness of the metal foil 4 and the metal foil 2 attached to the double-sided insulating substrate through the plurality of reinforcement connection structures 2.

[0023] According to one embodiment of the present invention, a reinforcement hole structure 1 is provided on the metal foil 1, a reinforcement hole structure 3 is provided on the metal foil 3 facing away from the reinforcement hole structure 1, and a metallized hole 1 passing through the double-sided insulating substrate is connected between the reinforcement hole structure 1 and the reinforcement hole structure 3 to form the reinforcement connection structure 1;

[0024] A second reinforcement hole structure is provided on the second metal foil, and a fourth reinforcement hole structure is provided on the fourth metal foil facing away from the second reinforcement hole structure. A second metallized hole passing through the double-sided insulating substrate is connected between the second reinforcement hole structure and the fourth reinforcement hole structure to form the second reinforcement connection structure.

[0025] In this embodiment, the reinforcement hole structure one and the reinforcement hole structure three are connected by a metallized hole one passing through the double-sided insulating substrate to form a reinforcement connection structure one, so that the metal foil one and the metal foil three are conductive, and the conductivity between the metal foil two and the metal foil four is increased. In addition, the metallized hole one also improves the firmness of the metal foil one and the metal foil three attached to the double-sided insulating substrate; further, the reinforcement hole structure two and the reinforcement hole structure four are connected by a metallized hole two passing through the double-sided insulating substrate to form a reinforcement connection structure two, so that the metal foil two and the metal foil four are conductive, and the conductivity between the metal foil two and the metal foil four is increased. In addition, the metallized hole two also improves the firmness of the metal foil two and the metal foil four attached to the double-sided insulating substrate.

[0026] According to one embodiment of the present invention, the metal foil 1, the metal foil 2, the metal foil 3, the metal foil 4 and the metal foil bridge are all copper-clad foils. The metal foil 1, the metal foil 2, the metal foil 3, the metal foil 4 and the metal foil bridge in this embodiment are all copper-clad foils, which have good electrical conductivity. When a high-voltage current passes through the copper-clad foil, the copper-clad foil discharges and quickly melts and vaporizes, and diffuses to the surrounding medium. Based on the conductive properties of the plasma of the melted and vaporized copper-clad foil, the residual high-voltage energy of the electrodes at both ends of the copper-clad foil forms an ion accelerator, which further accelerates the plasma to form a plasma shock wave, which is conducive to the reliable excitation of the high explosive in the electronic detonator by the plasma shock wave.

[0027] According to one embodiment of the present invention, the metal foil one and the metal foil two are symmetrically arranged, the metal foil three and the metal foil four are symmetrically arranged, the metal foil bridge is connected at the middle position of the metal foil one and the metal foil two, the double-sided insulating substrate is a double-sided metal foil-clad printed circuit board, the metal foil one, the metal foil two and the metal foil bridge are formed by etching on the first side of the double-sided metal foil-clad printed circuit board, and the metal foil three and the metal foil four are formed by etching on the second side of the double-sided metal foil-clad printed circuit board.

[0028] In this embodiment, metal foil one and metal foil two are symmetrically arranged, metal foil three and metal foil four are symmetrically arranged, and the metal foil bridge is connected in the middle position of metal foil one and metal foil two, which is beneficial to concentrate the plasma generated by metal foil one and metal foil two in the middle of metal foil one and metal foil two, and is beneficial to improve the concentration of plasma; in addition, metal foil one, metal foil two and the metal foil bridge are formed by etching on the first side of the double-sided metal foil printed circuit board, and metal foil three and metal foil four are formed by etching on the second side of the double-sided metal foil printed circuit board, which is convenient for processing to obtain plasma ignition components.

[0029] According to another aspect of the present application, an electronic detonator is provided, comprising:

[0030] A shell body, wherein an explosive filling cavity is provided in the shell body, and the explosive filling cavity is filled with high explosive;

[0031] A circuit substrate, wherein an energy storage capacitor is provided on the circuit substrate;

[0032] The above-mentioned plasma ignition component is connected to the circuit substrate and faces the explosive filling cavity, and the metal foil bridge is in contact with the high explosive filled in the explosive filling cavity, the wire connection structure three is electrically connected to the positive electrode of the energy storage capacitor through a wire, and the wire connection structure four is electrically connected to the negative electrode of the energy storage capacitor through a wire, and the metal foil bridge can discharge under the discharge action of the energy storage capacitor to cause an electric explosion and the generated plasma can excite the high explosive filled in the explosive filling cavity.

[0033] The electronic detonator in this embodiment includes the above-mentioned plasma ignition component, and a reinforcement connection structure 1 is connected between the metal foil 1 and the metal foil 3 arranged on the plasma ignition component, which can improve the firmness of the metal foil 3 and the metal foil 1 attached to the double-sided insulating substrate through the reinforcement connection structure 1; similarly, a reinforcement connection structure 2 is connected between the metal foil 2 and the metal foil 4, which can improve the firmness of the metal foil 4 and the metal foil 2 attached to the double-sided insulating substrate through the reinforcement connection structure 2. Furthermore, the metal foil bridge discharges under the discharge action of the energy storage capacitor to cause an electric explosion, and the generated plasma can excite the high explosive filled in the explosive filling cavity, which is convenient for reliable excitation of the electronic detonator through the plasma ignition component. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a structural schematic diagram of a plasma ignition component according to an embodiment of the present invention;

[0036] Figure 2 for Figure 1 A top view of the plasma ignition component after it is aligned;

[0037] Figure 3 for Figure 2 Bottom view of

[0038] Figure 4 A schematic structural diagram of a second structure of a metal foil bridge according to an embodiment of the present invention;

[0039] Figure 5 for Figure 4 A top view of the plasma ignition component after alignment.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 1. Double-sided insulating substrate, 10. Metal foil one, 11. Metal foil two, 12. Metal foil bridge, 13. Metal foil three, 14. Metal foil four, 15. Metal pad hole one, 16. Metal pad hole two, 17. Metallized hole one, 18. Metallized hole two, 121. Connecting end one, 122. Connecting end two, 123. Explosive bridge wire, 124. Explosive bridge wire two. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0043] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0045] In one aspect of the present application, a plasma ignition component is provided, such as Figures 1 to 3 As shown, including:

[0046] A double-sided insulating substrate 1, wherein a metal foil 10 and a metal foil 2 11 are disposed on a first surface of the double-sided insulating substrate 1, the metal foil 10 and the metal foil 2 11 are disposed opposite to each other, a gap 1 is formed between the metal foil 10 and the metal foil 2 11, a wire connection structure 1 is disposed on the metal foil 10, and a wire connection structure 2 is disposed on the metal foil 2 11;

[0047] A metal foil bridge 12 is also provided on the first surface of the double-sided insulating substrate 1. The metal foil bridge 12 is located in the gap 1. One end of the metal foil bridge 12 is connected to the metal foil 10, and the other end of the metal foil bridge 12 is connected to the metal foil 2 11. The metal foil bridge 12 is used to discharge outward to generate plasma.

[0048] A metal foil three 13 and a metal foil four 14 are provided on the second surface of the double-sided insulating substrate 1. The metal foil three 13 and the metal foil four 14 are arranged opposite to each other, and the metal foil three 13 is arranged with its back to the metal foil one 10, and the metal foil four 14 is arranged with its back to the metal foil two 11. A gap two is formed between the metal foil three 13 and the metal foil four 14. A wire connection structure three is provided on the metal foil three 13. The wire connection structure three is arranged with its back to the wire connection structure one and is connected to the wire connection structure one through the conductive structure one. A reinforced connection structure one is connected between the metal foil one 10 and the metal foil three 13. A wire connection structure four is provided on the metal foil four 14. The wire connection structure four is arranged with its back to the wire connection structure two and is connected to the wire connection structure two through the conductive structure two. A reinforced connection structure two is connected between the metal foil three 13 and the metal foil four 14.

[0049] In this embodiment, if Figures 1 to 3 As shown, a reinforcing connection structure 1 is connected between the metal foil 10 and the metal foil 3 13 in this embodiment, and the reinforcing connection structure 1 can improve the firmness of the metal foil 3 13 and the metal foil 10 attached to the double-sided insulating substrate 1; similarly, a reinforcing connection structure 2 is connected between the metal foil 2 11 and the metal foil 4 14, and the reinforcing connection structure 2 can improve the firmness of the metal foil 4 14 and the metal foil 2 11 attached to the double-sided insulating substrate 1; thereby, it is prevented that the metal foil is detached or peeled off from the double-sided insulating substrate 1, causing the metal foil bridge 12 to break, and further prevents the metal foil bridge 12 from breaking and causing the electronic detonator to fail to explode; further, the metal foil is reliably attached to the double-sided insulating substrate 1, and the extrusion force that the metal foil can withstand is increased. In the process of assembling the plasma ignition component on the metal tube of the electronic detonator, the metal foil is prevented from being squeezed and detached or peeled off from the double-sided insulating substrate 1, and it is also prevented that the metal foil is detached or peeled off from the double-sided insulating substrate 1 during welding. Furthermore, a wire connection structure three is provided on the metal foil three 13, and a wire connection structure four is provided on the metal foil four 14. The wire connection structure three and the wire connection structure four can be respectively connected to the positive and negative electrodes of the energy storage capacitor by using two wires, and discharged to the metal foil bridge 12 through the energy storage capacitor, which is conducive to the outward discharge of the metal foil bridge 12 to cause an electric explosion to generate plasma, and is convenient for ignition using a plasma ignition component.

[0050] In this embodiment, if Figures 1 to 3 As shown, the wire connection structure 1 and the wire connection structure 3 in this embodiment are connection hole structures. The conductive structure 1 in this embodiment is specifically a metallized hole. The metallized hole extends to the wire connection structure 1 and the wire connection structure 3 to form a metal pad hole 15. The metal pad hole 15 is used for welding with the wire to achieve connection with an electrode of the energy storage capacitor.

[0051] Further, such as Figures 1 to 3As shown, the wire connection structure 2 and the wire connection structure 4 are connection hole structures. The conductive structure 2 in this embodiment is specifically a metallized hole. The metallized hole extends to the wire connection structure 2 and the wire connection structure 4 to form a metal pad hole 2 16. The metal pad hole 2 16 is used for welding with the wire to achieve connection with the other electrode of the energy storage capacitor. The metal foil 1 10 and the metal foil 2 11 on both sides of the gap 1 in this embodiment constitute two electrodes of the ion accelerator.

[0052] Furthermore, the energy storage capacitor in this embodiment is specifically a high-voltage energy storage capacitor. The electric energy stored in the high-voltage energy storage capacitor is greater than 0.3 joules. The power supply voltage stored in the high-voltage energy storage capacitor is greater than 40V and less than 150V. The storage capacity and provided voltage range of the high-voltage energy storage capacitor can also be adjusted as needed.

[0053] Further, such as Figures 1 to 3 As shown, the double-sided insulating substrate 1 in this embodiment is a disc-shaped structure, and the double-sided insulating substrate 1 can also be set to other structures; the metal foil 1 10, the metal foil 2 11, the metal foil 3 13 and the metal foil 4 14 in this embodiment are all approximately semicircular structures, and the metal foil 1 10, the metal foil 2 11, the metal foil 3 13 and the metal foil 4 14 can also be set to other shapes. Further, the sizes of the gap 1 and the gap 2 in this embodiment can have various sizes, which can be reasonably designed according to the concentration degree of plasma acceleration, and will not be repeated here.

[0054] One embodiment of the present invention, as Figure 1 and Figure 2 As shown, the metal foil bridge 12 comprises:

[0055] A connecting end 121 is connected to the metal foil 10, and an end of the connecting end 121 facing the metal foil 11 extends toward the metal foil 11 to form a protruding structure 1 protruding from the metal foil 10;

[0056] The second connection end 122 is connected to the second metal foil 11 opposite to the first connection end 121, and one end of the second connection end 122 opposite to the first metal foil 10 extends toward the first metal foil 10 to form a second protruding structure protruding from the second metal foil 11;

[0057] The explosive bridge wire 123 is connected between the protruding structure 1 and the protruding structure 2. The explosive bridge wire 123 is used for discharging outward to cause an electric explosion and generate plasma.

[0058] In this embodiment, if Figure 1 and Figure 2As shown, the protruding structure one protrudes from the metal foil one 10, and the protruding structure two protrudes from the metal foil two 11, which is beneficial to improving the firmness of the connection between the metal foil bridge 12 and the metal foil one 10 and the metal foil two 11, and is beneficial to increasing the amount of plasma generated when the metal foil bridge 12 discharges outward to cause an electric explosion; in addition, the explosive bridge wire 123 is connected between the protruding structure one and the protruding structure two, which is beneficial to improving the firmness of the connection of the explosive bridge wire 123, and is beneficial to avoiding the breakage of the explosive bridge wire 123 and ensuring the stability of the explosive bridge wire 123 discharging outward to cause an electric explosion and generate plasma.

[0059] In this embodiment, if Figure 1 and Figure 2 As shown, the width, length and copper coating thickness of the explosive bridge wire 123 can have a variety of combinations. By adjusting the width, length and copper coating thickness of the explosive bridge wire 123, an explosive bridge wire 123 having a resistance value matching the storage energy of the energy storage capacitor can be obtained, so that a voltage can be provided to the matching explosive bridge wire 123 through the energy storage capacitor matching the storage energy, so that the explosive bridge wire 123 is instantly melted and vaporized to form a high-temperature, high-pressure, high-speed plasma shock wave.

[0060] One embodiment of the present invention, as Figure 1 and Figure 2 As shown, the explosive bridge wire 123 is in a bent structure. In this embodiment, the explosive bridge wire 123 is in a bent structure, which increases the length of the explosive bridge wire 123, thereby increasing the amount of plasma generated when the explosive bridge wire 123 discharges outward to cause an electric explosion, and also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition component, which is conducive to the instantaneous melting and vaporization of the explosive bridge wire 123 to form a high-temperature, high-pressure, high-speed plasma shock wave to excite the high explosive. Further, the explosive bridge wire 123 can be bent in a variety of ways, as long as it is conducive to increasing the length of the explosive bridge wire 123.

[0061] One embodiment of the present invention, as Figure 1 and Figure 2 As shown, the explosion bridge wire 123 is in a Z-shaped structure. In this embodiment, the explosion bridge wire 123 is in a Z-shaped structure, which increases the length of the explosion bridge wire 123, thereby increasing the amount of plasma generated when the explosion bridge wire 123 discharges outward to cause an electric explosion, and also increases the conductivity of the plasma, thereby improving the ignition performance of the plasma ignition component, which is conducive to the instantaneous melting and vaporization of the explosion bridge wire 123 to form a high-temperature, high-pressure, high-speed plasma shock wave to excite the high explosive.

[0062] Further, such as Figures 4 to 5As shown, the explosive bridge wire 124 in this embodiment serves as a deformed structure of the explosive bridge wire 123. When the width of the gap 1 formed between the metal foil 10 and the metal foil 2 11 remains unchanged, the length of the portion of the explosive bridge wire 124 close to the connection end 121 and the connection end 2 122 is relatively shortened, while the middle portion of the explosive bridge wire 124 is lengthened, which is beneficial to further increase the length of the explosive bridge wire 124.

[0063] One embodiment of the present invention, as Figure 1 and Figure 2 As shown, the first connection end 121 is in a strip shape and extends along the extension direction of the first gap, and the second connection end 122 is in a strip shape and extends along the extension direction of the first gap.

[0064] In this embodiment, if Figure 1 and Figure 2 As shown, the connection end 121 and the connection end 2 122 are in strip shape, which increases the contact area between the metal foil bridge 12 and the metal foil 10 and the metal foil 2 11, which is beneficial to increase the amount of plasma generated when the metal foil bridge 12 discharges outward to cause an electric explosion, thereby helping to increase the conductivity of the plasma and improve the ignition performance of the plasma ignition component.

[0065] One embodiment of the present invention, as Figures 1 to 3 As shown, the reinforcement connection structure 1 and the reinforcement connection structure 2 are provided in plurality. In this embodiment, by providing a plurality of reinforcement connection structures 1, it is beneficial to further improve the firmness of the metal foil 3 13 and the metal foil 1 10 attached to the double-sided insulating substrate 1 through the plurality of reinforcement connection structures 1; in addition, by providing a plurality of reinforcement connection structures 2, it is beneficial to further improve the firmness of the metal foil 4 14 and the metal foil 2 11 attached to the double-sided insulating substrate 1 through the plurality of reinforcement connection structures 2.

[0066] Further, such as Figures 1 to 3 As shown, the reinforcement connection structure 1 and the reinforcement connection structure 2 in this embodiment are respectively provided with two, and the reinforcement connection structure 1 and the reinforcement connection structure 2 are both metallized hole structures; in addition, the reinforcement connection structure 1 and the reinforcement connection structure 2 in this embodiment can also be set to other reinforcement connection structures that can achieve reinforced connection, and the number of reinforcement connection structures 1 and the reinforcement connection structure 2 can also be set to three, four, etc.

[0067] One embodiment of the present invention, as Figures 1 to 3 As shown, a reinforcement hole structure 1 is provided on the metal foil 10, a reinforcement hole structure 3 is provided on the metal foil 3 13 facing away from the reinforcement hole structure 1, and a metallized hole 17 passing through the double-sided insulating substrate 1 is connected between the reinforcement hole structure 1 and the reinforcement hole structure 3 to form a reinforcement connection structure 1;

[0068] A second reinforcement hole structure is provided on the metal foil 11, and a fourth reinforcement hole structure is provided on the metal foil 14 facing away from the second reinforcement hole structure. A second metallized hole 18 passing through the double-sided insulating substrate 1 is connected between the second reinforcement hole structure and the fourth reinforcement hole structure to form a second reinforcement connection structure.

[0069] In this embodiment, if Figures 1 to 3 As shown, a metallized hole 17 passing through the double-sided insulating substrate 1 is connected between the reinforcement hole structure 1 and the reinforcement hole structure 3 to form a reinforcement connection structure 1, so that the metal foil 10 and the metal foil 3 13 are conductive, and the conductivity between the metal foil 2 11 and the metal foil 4 14 is increased. In addition, the metallized hole 17 also improves the firmness of the metal foil 10 and the metal foil 3 13 attached to the double-sided insulating substrate 1; further, a metallized hole 2 18 passing through the double-sided insulating substrate 1 is connected between the reinforcement hole structure 2 and the reinforcement hole structure 4 to form a reinforcement connection structure 2, so that the metal foil 2 11 and the metal foil 4 14 are conductive, and the conductivity between the metal foil 2 11 and the metal foil 4 14 is increased. In addition, the metallized hole 2 18 also improves the firmness of the metal foil 2 11 and the metal foil 4 14 attached to the double-sided insulating substrate 1.

[0070] In this embodiment, if Figures 1 to 3 As shown, in this embodiment, there are two reinforcement hole structures one and two reinforcement hole structures three respectively, and the metallized hole one 17 extends to the reinforcement hole structure one and the reinforcement hole structure three to form a reinforcement connection structure one; further, there are two reinforcement hole structures two and two reinforcement hole structures four respectively, and the metallized hole two 18 extends to the reinforcement hole structure two and the reinforcement hole structure four to form a reinforcement connection structure two.

[0071] Further, such as Figures 1 to 3 As shown, the metallized hole 17 and the metallized hole 2 18 in this embodiment are specifically electroplated copper through holes. The metallized hole 17 and the metallized hole 2 18 can also be electroplated through hole structures formed by electroplating with other metal materials.

[0072] Further, such as Figures 1 to 3 As shown, the two reinforcement hole structures one and the two reinforcement hole structures three in this embodiment are respectively located on both sides of the metal pad hole one 15 along the extension direction of the gap one, and the two reinforcement hole structures two and the two reinforcement hole structures four are respectively located on both sides of the metal pad hole two 16 along the extension direction of the gap two.

[0073] One embodiment of the present invention, as Figures 1 to 3As shown, the metal foil 10, the metal foil 2 11, the metal foil 3 13, the metal foil 4 14 and the metal foil bridge 12 are all copper foils. The metal foil 10, the metal foil 2 11, the metal foil 3 13, the metal foil 4 14 and the metal foil bridge 12 in this embodiment are all copper foils, which have good electrical conductivity. When a high voltage current passes through the copper foil, the copper foil discharges and quickly melts and vaporizes, and diffuses to the surrounding medium. Based on the conductive properties of the plasma of the melted and vaporized copper foil, the residual high voltage energy of the electrodes at both ends of the copper foil forms an ion accelerator, which further accelerates the plasma to form a plasma shock wave, which is conducive to the reliable excitation of the high explosive in the electronic detonator by the plasma shock wave.

[0074] Furthermore, the metal foil 1 10 , the metal foil 2 11 , the metal foil 3 13 , the metal foil 4 14 and the metal foil bridge 12 in this embodiment may also be made of other conductive metal materials that can form high-temperature, high-pressure and high-speed plasma shock waves through discharge.

[0075] One embodiment of the present invention, as Figures 1 to 3 As shown, metal foil one 10 and metal foil two 11 are symmetrically arranged, metal foil three 13 and metal foil four 14 are symmetrically arranged, metal foil bridge 12 is connected in the middle position of metal foil one 10 and metal foil two 11, the double-sided insulating substrate 1 is a double-sided metal foil-coated printed circuit board, metal foil one 10, metal foil two 11 and metal foil bridge 12 are formed by etching on the first side of the double-sided metal foil-coated printed circuit board, and metal foil three 13 and metal foil four 14 are formed by etching on the second side of the double-sided metal foil-coated printed circuit board.

[0076] In this embodiment, if Figures 1 to 3 As shown, metal foil 1 10 and metal foil 2 11 are symmetrically arranged, metal foil 3 13 and metal foil 4 14 are symmetrically arranged, and metal foil bridge 12 is connected in the middle position of metal foil 10 and metal foil 2 11, which is beneficial for the plasma generated by metal foil 1 10 and metal foil 2 11 to be concentrated in the middle of metal foil 1 10 and metal foil 2 11, and is beneficial for improving the concentration of plasma; in addition, metal foil 1 10, metal foil 2 11 and metal foil bridge 12 are formed by etching on the first side of the double-sided metal foil printed circuit board, and metal foil 3 13 and metal foil 4 14 are formed by etching on the second side of the double-sided metal foil printed circuit board, which is convenient for processing to obtain plasma ignition components.

[0077] Furthermore, the double-sided metal foil-clad printed circuit board in the present embodiment is specifically a double-sided copper-clad printed circuit board. The thickness of the copper layer formed by the copper cladding on the double-sided copper-clad printed circuit board can be designed or selected according to needs. The width of the explosive bridge wire 123 formed by etching the double-sided copper-clad printed circuit board is on the order of microns. The process of etching the double-sided copper-clad printed circuit board to form the specific explosive bridge wire 123 can refer to the existing technology in the field and will not be repeated here.

[0078] In another aspect of the present application, an electronic detonator is provided, comprising:

[0079] A shell body, wherein an explosive filling cavity is provided in the shell body, and the explosive filling cavity is filled with high explosive;

[0080] A circuit substrate, wherein an energy storage capacitor is provided on the circuit substrate;

[0081] The above-mentioned plasma ignition component is connected to the circuit substrate and faces the explosive filling cavity, and the metal foil bridge 12 is in contact with the high explosive filled in the explosive filling cavity, the wire connection structure three is electrically connected to the positive electrode of the energy storage capacitor through the wire, and the wire connection structure four is electrically connected to the negative electrode of the energy storage capacitor through the wire. The metal foil bridge 12 can discharge under the discharge action of the energy storage capacitor to cause an electric explosion and the generated plasma can excite the high explosive filled in the explosive filling cavity.

[0082] In this embodiment, the electronic detonator includes the above-mentioned plasma ignition component, and a reinforcement connection structure 1 is connected between the metal foil 10 and the metal foil 3 13 arranged on the plasma ignition component, which can improve the firmness of the metal foil 3 13 and the metal foil 10 attached to the double-sided insulating substrate 1 through the reinforcement connection structure 1; similarly, a reinforcement connection structure 2 is connected between the metal foil 2 11 and the metal foil 4 14, which can improve the firmness of the metal foil 4 14 and the metal foil 2 11 attached to the double-sided insulating substrate 1 through the reinforcement connection structure 2. Further, the metal foil bridge 12 discharges under the discharge action of the energy storage capacitor to cause an electric explosion, and the generated plasma can excite the high explosive filled in the explosive filling cavity to form a strong detonation wave output, which is convenient for reliable excitation of the electronic detonator through the plasma ignition component, and there is no need to fill the electronic detonator with explosives, avoiding the problem of explosion hazards caused by the electronic detonator being filled with explosives during daily production, transportation, storage, and use in blasting projects.

[0083] In this embodiment, the metal foil bridge 12 is tightly attached to the high explosive filled in the explosive filling cavity, and the high explosive filled in the explosive filling cavity is RDX or PETN, and other suitable explosives can also be used as high explosives. In addition, in this embodiment, the capacity and discharge condition of the energy storage capacitor can be reasonably designed or selected according to the existing technology in the field as needed, and will not be described in detail here.

[0084] Furthermore, the electronic detonator, circuit substrate and energy storage capacitor in this embodiment are not shown in the figure. The connection method of the energy storage capacitor to the circuit substrate, the control module also provided in the electronic detonator, and other components and the control module for controlling the energy storage capacitor can all refer to the relevant existing technologies in the field and will not be described in detail here.

[0085] In addition, in addition to the technical solutions disclosed in this embodiment, the energy storage capacitor, circuit substrate, double-sided copper-clad printed circuit board, other components of the electronic detonator and their working principles in the present invention can refer to the conventional technical solutions in this technical field, and these conventional technical solutions are not the focus of the present invention, and the present invention will not describe them in detail here.

[0086] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0087] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present application.

[0088] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A plasma ignition component, characterized in that: include: A double-sided insulating substrate, wherein a first metal foil and a second metal foil are provided on a first surface of the double-sided insulating substrate, the first metal foil is arranged opposite to the second metal foil, a gap first is formed between the first metal foil and the second metal foil, a first wire connection structure is provided on the first metal foil, and a second wire connection structure is provided on the second metal foil; A metal foil bridge is also provided on the first surface of the double-sided insulating substrate, the metal foil bridge is located in the gap 1, one end of the metal foil bridge is connected to the metal foil 1, and the other end of the metal foil bridge is connected to the metal foil 2, and the metal foil bridge is used to discharge outward to generate plasma; A metal foil three and a metal foil four are provided on the second surface of the double-sided insulating substrate, the metal foil three is arranged opposite to the metal foil four, and the metal foil three is arranged with its back to the metal foil one, and the metal foil four is arranged with its back to the metal foil two, a gap two is formed between the metal foil three and the metal foil four, a wire connection structure three is provided on the metal foil three, the wire connection structure three is arranged with its back to the wire connection structure one and is connected to the wire connection structure one through a conductive structure one, and a reinforcement connection structure one is connected between the metal foil one and the metal foil three; a wire connection structure four is provided on the metal foil four, the wire connection structure four is arranged with its back to the wire connection structure two and is connected to the wire connection structure two through a conductive structure two, and a reinforcement connection structure two is connected between the metal foil three and the metal foil four.

2. The plasma ignition element according to claim 1, characterized in that: The metal foil bridge comprises: A connecting end 1 connected to the metal foil 1, wherein an end of the connecting end 1 facing the metal foil 2 extends toward the metal foil 2 to form a protruding structure 1 protruding from the metal foil 1; A second connection end, facing the first connection end and connected to the second metal foil, an end of the second connection end facing the first metal foil extending toward the first metal foil to form a second protruding structure protruding from the second metal foil; An explosive bridge wire is connected between the protruding structure one and the protruding structure two, and the explosive bridge wire is used for discharging outward to cause an electric explosion and generate plasma.

3. The plasma ignition element according to claim 2, characterized in that: The explosive bridge wire is in a bent structure.

4. The plasma ignition element according to claim 3, characterized in that: The explosive bridge wire has a Z-shaped structure.

5. The plasma ignition element according to claim 2, characterized in that: The first connection end is in a strip shape and extends along the extension direction of the first gap, and the second connection end is in a strip shape and extends along the extension direction of the first gap.

6. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The first reinforcement connection structure and the second reinforcement connection structure are each provided in plurality.

7. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The first metal foil is provided with a reinforcement hole structure 1, the third metal foil is provided with a reinforcement hole structure 3 facing away from the first reinforcement hole structure, and the first reinforcement hole structure and the third reinforcement hole structure are connected with a metallized hole 1 passing through the double-sided insulating substrate to form the first reinforcement connection structure; A second reinforcement hole structure is provided on the second metal foil, and a fourth reinforcement hole structure is provided on the fourth metal foil facing away from the second reinforcement hole structure. A second metallized hole passing through the double-sided insulating substrate is connected between the second reinforcement hole structure and the fourth reinforcement hole structure to form the second reinforcement connection structure.

8. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The metal foil one, the metal foil two, the metal foil three, the metal foil four and the metal foil bridge are all copper-clad foils.

9. The plasma ignition element according to any one of claims 1 to 5, characterized in that: The metal foil one and the metal foil two are symmetrically arranged, the metal foil three and the metal foil four are symmetrically arranged, the metal foil bridge is connected at the middle position of the metal foil one and the metal foil two, the double-sided insulating substrate is a double-sided metal foil printed circuit board, the metal foil one, the metal foil two and the metal foil bridge are formed by etching on the first side of the double-sided metal foil printed circuit board, and the metal foil three and the metal foil four are formed by etching on the second side of the double-sided metal foil printed circuit board.

10. An electronic detonator, characterized in that: include: A shell body, wherein an explosive filling cavity is provided in the shell body, and the explosive filling cavity is filled with high explosive; A circuit substrate, wherein an energy storage capacitor is provided on the circuit substrate; The plasma ignition component described in any one of claims 1 to 9 is connected to the circuit substrate and faces the explosive filling cavity, and the metal foil bridge is in contact with the high explosive filled in the explosive filling cavity, the wire connection structure three is electrically connected to the positive electrode of the energy storage capacitor through a wire, and the wire connection structure four is electrically connected to the negative electrode of the energy storage capacitor through a wire, and the metal foil bridge can discharge under the discharge action of the energy storage capacitor to cause an electric explosion and the generated plasma can excite the high explosive filled in the explosive filling cavity.

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