CN218994191U

CN218994191U - Plasma igniter and primer-free time-delay electronic detonator prepared by same

Info

Publication number: CN218994191U
Application number: CN202221478297.9U
Authority: CN
Inventors: 郭建国; 任流润
Original assignee: Shanxi Chenrunlong Technology Co ltd
Current assignee: Shanxi Chenrunlong Technology Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2023-05-09
Anticipated expiration: 2032-06-14

Abstract

The utility model provides a plasma igniter and a non-primary-explosive time-delay electronic detonator prepared by the same, belonging to the technical field of non-primary-explosive time-delay electronic detonators; the technical problems to be solved are as follows: providing an improvement of a plasma igniter and a prepared delay electronic detonator structure without initiating explosive; the technical scheme adopted for solving the technical problems is as follows: the plasma igniter comprises a plasma igniter and a PCB circuit board, wherein copper foil-clad printed circuits are arranged on the front side and the back side of an insulating plate of the plasma igniter, a first copper foil-clad and a second copper foil-clad are symmetrically arranged on the front side of the plasma igniter, a third copper foil-clad and a fourth copper foil-clad are symmetrically arranged on the back side of the plasma igniter, a metal pad hole which is communicated with each other is formed in the central position of the first copper foil-clad and the third copper foil-clad, and the central position of the second copper foil-clad and the fourth copper foil-clad, and the metal pad hole is electrically connected with positive and negative electrodes of a capacitor arranged on the PCB circuit board; the utility model is applied to the electronic detonator without the initiating explosive.

Description

Plasma igniter and primer-free time-delay electronic detonator prepared by same

Technical Field

The utility model provides a plasma igniter and a non-primary-explosive time-delay electronic detonator prepared by the same, and belongs to the technical field of non-primary-explosive time-delay electronic detonators.

Background

The digital electronic detonator is shown in fig. 1, and is commonly used at present, in particular to an electronic detonator with a low-voltage capacitor energy storage driving initiating explosive charging structure, wherein an energy storage capacitor with the diameter less than or equal to 6mm and the low voltage less than or equal to 25V, a digital circuit and an ignition element are welded on a PCB circuit board in the electronic detonator, the three components are integrated into an electronic module which is arranged in a metal detonator shell with the same caliber and the inner diameter of 6mm, the electronic module is led out of a plastic foot wire, a two-wire system jointing clamp with an upper box body and a lower box body connected with two-core insulated copper wires and the other end of the foot wire system jointing clamp is wrapped in the foot wire, and then a two-wire system field bus is connected with an initiator; the electronic detonator structure specifically comprises a metal detonator shell 100, a PCB circuit board 110, a resistance wire ignition head 120, a fire transferring cavity 130, a reinforcing cap 140, an initiating explosive 150, a secondary high explosive 160, a high explosive 170, a leg wire 200, a two-wire binding clip 300 and other components, wherein a fine resistance wire 121 arranged at the resistance wire ignition head 120 wraps the initiating explosive, and the electric energy of a low-voltage energy storage capacitor is more than 20 mJ 0.02J so that the fine resistance wire 121 can generate heat to ignite the initiating explosive.

The existing working mechanism of the digital electronic detonator of the type adopts a combustion-detonation mechanism, specifically, low-voltage capacitor energy is stored in a resistance wire ignition head 120 to discharge and heat and ignite gunpowder, flame passes through a flame transmission cavity 130, the primary explosive 150 is ignited through a small hole in the center of a reinforcing cap 140, the primary explosive 150 burns and detonates, initial detonation wave excites a polar explosive 160 to detonate, and detonation wave outputs strong detonation wave through a secondary explosive 170; the primary explosive 150 is a primary explosive with extremely high mechanical sensitivity filled in the detonator, generally nickel hydrazine nitrate or dinitrodiazophenol, the electronic detonator filled with the primary explosive is a high-risk product, and the electronic detonator with the primary explosive charging structure is extremely easy to cause explosion accidents in the daily production, transportation, storage and blasting engineering use process, so that the structural design of the detonator containing the primary explosive is avoided, and the structure of the current electronic detonator needs to be improved.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and solves the technical problems that: the plasma igniter and the improvement of the structure of the non-initiating-explosive time-delay electronic detonator prepared by the plasma igniter are provided.

In order to solve the technical problems, the utility model adopts the following technical scheme: the plasma igniter is a sheet of insulating board, copper foil-clad printed circuits are arranged on the front side and the back side of the insulating board, a first copper foil-clad and a second copper foil-clad are symmetrically arranged on the front side of the plasma igniter, a third copper foil-clad and a fourth copper foil-clad are symmetrically arranged on the back side of the plasma igniter, a metal pad hole communicated with each other is formed in the central position of the first copper foil-clad and the third copper foil-clad, and a metal pad hole is formed in the central position of the second copper foil-clad and the fourth copper foil-clad, and the first copper foil-clad, the third copper foil-clad, the second copper foil-clad and the fourth copper foil-clad are respectively connected into a whole;

the metal pad holes are specifically and electrically connected with positive and negative electrode discharge circuits of a capacitor arranged on the PCB;

the third copper-clad foil and the fourth copper-clad foil are connected through bridge foil wires with inner sides being oppositely provided with convex electrodes for connection;

the inner side of the third copper foil is also vertically provided with an L-shaped first foil electrode, the inner side of the fourth copper foil is also vertically provided with an L-shaped second foil electrode, and the extending ends of the first foil electrode and the second foil electrode are oppositely arranged at two sides of the bridge foil wire;

the PCB circuit board is a slender circuit board, one end of the PCB circuit board, which is connected with the detonator, is a narrow end, and the end of the PCB circuit board, which is provided with the capacitor, is a wide end;

the front surface of the plasma igniter is welded at the narrow strip end of the PCB, so that the back surface of the plasma igniter faces the outer side of the PCB, and the bridge foil wire can discharge and explode towards the outer side of the plasma igniter to form high-temperature, high-pressure and high-speed vaporous plasma.

The front and back sides of the insulating plate of the plasma igniter are specifically provided with vacuum metal plating films for manufacturing circuits by an etching process;

and the two sides of the PCB are provided with circuit copper-clad foils.

One side of the plasma igniter is also provided with a small hole.

The utility model provides a no initiating explosive time delay electronic detonator of being prepared by plasma igniter, includes by plasma igniter and PCB circuit board relative welding constitutes integrative plasma igniter, the inside at detonator metal casing is fixed in the installation of plasma igniter, the one end that the PCB circuit board welded plasma igniter seals in the card waist through the plastics sealing plug;

the detonator metal shell is connected with the charging shell into a whole through the waist, the charging shell is sequentially filled with a first-stage high explosive, a second-stage high explosive and a third-stage high explosive from inside to outside, a reinforcing sleeve is further arranged between the second-stage high explosive and the third-stage high explosive, and the back surface of the plasma igniter is tightly attached to the charging surface of the third-stage high explosive;

one end of the PCB welded with the capacitor is provided with a control port of the PCB, the control port of the PCB is externally connected with a control leg wire which is remotely connected with the initiator, and the control leg wire is packaged in the bayonet through a plastic sealing plug at the opening.

The digital delay circuit is welded on the PCB, and the control leg wire is a two-wire system leg wire;

components and parts that set up on the PCB circuit board include:

the circuit comprises a low-voltage stabilizing micro-processing circuit E1 with the model of LR763-1, a high-voltage trigger IC1 with the model of LR763-2, a triode T1, a triode T2, a field effect transistor U1, a bridge D1, resistors R1-R5, a current limiting resistor Rx1, a resistor Rf1, a resistor Ru1, a high-voltage capacitor Cg1 and a plasma igniter DHJ, wherein the digital delay circuit structure arranged on a PCB is as follows:

the 1 pin of the bridge D1 is sequentially connected with the collector of the triode T2, one end of the resistor R4 and the Vh end of the low-voltage stabilizing micro-processing circuit E1 in parallel and then connected with one end of the current-limiting resistor Rx1, and the other end of the current-limiting resistor Rx1 is connected with the Vh end of the high-voltage trigger IC 1;

the base electrode of the triode T2 is connected with the VT end of the low-voltage stabilizing micro-processing circuit E1, and the emitter electrode of the triode T2 is connected with one end of the resistor R1;

the other end of the resistor R2 is connected with one end of a resistor R3 in parallel and then connected with the base electrode of the triode T1, the other end of the resistor R4 is connected with the collector electrode of the triode T1, and the emitter electrode of the triode T1 is connected with one end of a resistor R5 in parallel and then connected with the VR end of the low-voltage stabilizing micro-processing circuit E1;

the Vcc end of the low-voltage stabilizing micro-processing circuit E1 is connected with the Vcc end of the high-voltage trigger IC 1;

the Vk end of the low-voltage stabilizing micro-processing circuit E1 is connected with the KJ end of the high-voltage trigger IC 1;

the IO end of the low-voltage stabilizing micro-processing circuit E1 is connected with the JC end of the high-voltage trigger IC 1;

the Truot end of the low-voltage stabilizing micro-processing circuit E1 is connected with the Start end of the high-voltage trigger IC 1;

the Vroot end of the high-voltage trigger IC1 is connected with the positive electrode of the high-voltage capacitor Cg1 in parallel and then is connected with one metal electrode of the plasma igniter DHJ, the other metal electrode of the plasma igniter DHJ is connected with one end of the resistor Rf1 in parallel and then is connected with the drain electrode of the field effect tube U1, and the other end of the resistor Rf1 is connected with the Vf end of the high-voltage trigger IC 1;

the trigger end of the high-voltage trigger IC1 is connected with one end of a resistor Ru1 in parallel and then connected with the grid electrode of a field effect tube U1;

the negative electrode of the high-voltage capacitor Cg1 is sequentially connected with the source electrode of the field effect tube U1, the other end of the resistor Ru1, the grounding end of the high-voltage trigger IC1, the grounding end of the low-voltage stabilizing micro-processing circuit E1, the other end of the resistor R5, the other end of the resistor R3, the other end of the resistor R1 and the 3-pin rear ground of the bridge D1 in parallel;

the 4 pin of the bridge D1 is connected with the positive input end a of the digital delay circuit;

and the pin 2 of the bridge D1 is connected with the negative input end b of the digital delay circuit.

The positive electrode input end a and the negative electrode input end b are specifically externally connected with two-wire system power supply and communication sharing foot lines, digital communication voltage provided by the two ends of the input ends a and b is less than or equal to 24V, and charging voltage provided by the two ends of the input ends a and b is more than 40V and less than 150V.

The PCB is welded with an analog delay circuit, and the control leg wire is a three-wire system leg wire;

components and parts that set up on the PCB circuit board include:

the model is LR 763-3's steady voltage trigger circuit E2, model is LR 763-2's high voltage trigger IC2, delay resistance Rt, delay capacitor Ct, field effect tube U2, electric bridge D2, current-limiting resistor Rx2, resistance Rf2, resistance Ru2, high voltage capacitor Cg2, plasma igniter DHJ, the simulation delay circuit structure who sets up on the PCB circuit board is:

the pin 1 of the bridge D2 is connected with the Vh end of the voltage stabilizing trigger circuit E2 in parallel and then connected with one end of a current limiting resistor Rx2, and the other end of the current limiting resistor Rx2 is connected with the Vh end of the high-voltage trigger IC 2;

the Vcc end of the voltage stabilizing trigger circuit E2 is connected with the Vcc end of the high-voltage trigger IC2 in parallel and then is respectively connected with the KJ end and the JC end of the high-voltage trigger IC 2;

the VD end of the voltage stabilizing trigger circuit E2 is connected with one end of a delay resistor Rt, and the VR end of the voltage stabilizing trigger circuit E2 is connected with the other end of the delay resistor Rt in parallel and then is connected with one end of a delay capacitor Ct;

the Truot end of the voltage stabilizing trigger circuit E2 is connected with the Start end of the high-voltage trigger IC 2;

the Vroot end of the high-voltage trigger IC2 is connected with the positive electrode of the high-voltage capacitor Cg2 in parallel and then is connected with one metal electrode of the plasma igniter DHJ, the other metal electrode of the plasma igniter DHJ is connected with one end of the resistor Rf2 in parallel and then is connected with the drain electrode of the field effect tube U2, and the other end of the resistor Rf2 is connected with the Vf end of the high-voltage trigger IC 2;

the trigger end of the high-voltage trigger IC2 is connected with one end of a resistor Ru2 in parallel and then connected with the grid electrode of the field effect transistor U2;

the negative electrode of the high-voltage capacitor Cg2 is sequentially connected with the source electrode of the field effect tube U2, the other end of the resistor Ru2, the grounding end of the high-voltage trigger IC2, the other end of the delay capacitor Ct, the grounding end of the voltage stabilizing trigger circuit E2 and the 3-pin rear ground of the bridge D2 in parallel;

the 4 pin of the bridge D2 is connected with the input end a of the analog delay circuit;

the 2 pin of the bridge D2 is connected with the input end b of the analog delay circuit;

the input end c of the analog delay circuit is connected with the Trin end of the voltage stabilizing trigger circuit E2.

When a delay component in the analog delay circuit is set, the product of the delay resistance Rt value and the delay capacitance Ct value is multiplied by a coefficient of 1.1 to form delay time T=1.1 RtCt, the delay time T=1.1 RtCt is used as different delay sections T of the analog delay electronic detonator, and the delay components RtCt with different parameters are selected to be assembled into delay electronic detonators with different delay sections;

the delay time of the analog circuit is set according to the delay time period of 0 seconds, namely, the delay time is set from 0 seconds instantly to 1 ms+/-1%, 5 ms+/-1%, 10 ms+/-1%, 15 ms+/-1%, 20 ms+/-1%, 25 ms+/-1%, … …, second+/-1% and sub+/-1%.

The detonator metal shell is a metal tube with a variable diameter, and the diameter range of the metal tube is 6-16 cm.

The third-stage high explosive, the second-stage high explosive and the first-stage high explosive are filled with either all the black-cord gold RDX or all the Taian PETN or both the black-cord gold RDX and the Taian PETN.

Compared with the prior art, the utility model has the following beneficial effects: the utility model improves the structure of the existing digital electronic detonator, provides a plasma igniter and a non-primary-explosive time-delay electronic detonator prepared by the same, and in order to avoid filling primary explosive in the electronic detonator, the utility model adopts the electric energy stored by a high-voltage capacitor to discharge explosion in the enhanced high-voltage plasma igniter, instantaneously generates high-energy plasma shock waves, directly excites high explosive to form detonation by the plasma shock waves, and is the electronic detonator with a non-primary-explosive charging structure of a 'plasma shock wave-to-detonation' mechanism; the utility model adopts the enhanced high-voltage plasma igniter, the high-voltage (with the voltage of 150V being more than or equal to VH being more than or equal to 40V) energy storage capacitor, the PCB circuit board and the detonator without the initiating explosive to be assembled, thereby forming the electronic detonator without the initiating explosive, and the PCB circuit board is welded with the digital delay driving circuit or the analog delay driving circuit so as to realize the aim of delayed detonation of the electronic detonator.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a digital electronic detonator in the prior art;

FIG. 2 is an enlarged view of the front face of the plasma igniter of the utility model;

FIG. 3 is an enlarged view of the structure of the opposite side of the plasma igniter of the utility model;

FIG. 4 is a schematic diagram of a plasma igniter according to the present utility model;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a schematic diagram of the structure of the digital delay electronic detonator without initiating explosive of the utility model;

FIG. 7 is a circuit diagram of the non-primary digital delay electronic detonator of the present utility model;

FIG. 8 is a schematic diagram of the structure of the non-primary analog delay electronic detonator of the present utility model;

FIG. 9 is a circuit diagram of a non-primary analog delay electronic detonator of the utility model;

the meaning of each serial number in the figure is: plasma igniter (100), PCB (printed circuit board) 30, first copper foil (11), second copper foil (12), third copper foil (21), fourth copper foil (22), aperture (15), bridge foil wire (25), first foil electrode (26), second foil electrode (27), condenser (40), detonator metal shell (50), plastic sealing plug (35), oral plastic sealing plug (36), control foot line (37), card waist (55), bayonet socket (56), charge shell (501), first level high explosive (54), second level high explosive (53), third level high explosive (51), enhancement cover (52).

Detailed Description

The utility model relates to an electronic detonator structure without initiating explosive, which is applied to an enhanced high-voltage plasma igniter, and is characterized in that the enhanced high-voltage plasma igniter is driven by high-voltage capacitor energy storage to instantaneously discharge, explode and vaporize, so as to form a high-temperature, high-voltage and high-speed vaporous plasma shock wave to excite the electronic detonator without initiating explosive;

as shown in fig. 2 and 3, the enhanced high voltage plasma igniter 100 provided by the utility model is an enlarged view, and the enhanced high voltage plasma igniter is formed by adopting a double-sided copper foil-coated printed circuit board or adopting vacuum metal plating films on two sides of an insulating plate to manufacture a circuit by adopting an etching process; in the figure, the front and back sides of a circular plasma ignition insulating plate (100) are respectively provided with a copper foil-clad printed circuit (A) front side and a copper foil-clad printed circuit (B) back side; the front surface consists of a first copper-clad foil (11), a second copper-clad foil (12), a metalized bonding pad hole and a small hole (15); the back surface consists of a third copper-clad foil (21), a fourth copper-clad foil (22), a metallized bonding pad hole, a bridge foil wire (25), a first foil electrode (26) and a second foil electrode (27); copper foil covers are symmetrically arranged on the A surface and the B surface of the printed circuit board, and metallized bonding pad holes arranged on the A surface and the B surface are correspondingly and electrically connected on the front surface and the back surface to form bonding pad holes for connecting positive and negative electrodes of the storage electric energy capacitor; the linewidth of the bridge foil line (25) of the surface B is in the order of micrometers, and the convex electrodes are connected between the two copper-clad foils; the first foil electrode (26) and the second foil electrode (27) of the surface B are vertically arranged on two sides of the bridge foil line (25); the working principle of the utility model is as follows: the positive and negative high-voltage electrodes of the capacitor Cg for storing electric energy are controlled by a switch tube to be electrically connected with the metallized bonding pad hole through welding, so that two copper-clad foils are instantaneously discharged and vaporized in a bridge foil wire (25) to form conductive high-temperature vapor plasmas, and meanwhile, the foil electrodes vertically arranged on two sides of the bridge foil wire (25) are continuously subjected to enhanced discharge in the conductive high-temperature vapor plasmas to promote the conductive high-temperature vapor plasmas to accelerate expansion, so that high-temperature plasma strong shock waves directly excite high explosive to form detonation, and the working mechanism is called a 'plasma shock wave detonation conversion' mechanism; the directly activated explosive may be nigelgold (RDX) or PETN.

As shown in fig. 4 and 5, the enhanced high voltage plasma igniter of the present utility model is integrally soldered to a PCB circuit board, wherein fig. 4 is a front view and fig. 5 is a top view; fig. 4 includes: the plasma igniter (100), the PCB (30), the copper foil covered on the two sides of the plasma igniter, the welding part of the plasma igniter and the PCB, and the high-voltage capacitor (40); the centers of the first copper-clad foil and the second copper-clad foil which are symmetrical on the A surface of the plasma igniter (100) in the figure 4 are vertically abutted with one end of the narrow strip of the PCB; the copper-clad foil of the A face of the plasma igniter (100) in the figure 5 is in butt joint with the copper-clad foil of the PCB circuit board, and a welding place exists; the arrow B in the figure 5 is a view of the plasma igniter (100), wherein the B surface of the plasma igniter is provided with the bridge foil wire (25) outwards, and the outwards bridge foil wire is discharged to form plasma; the high-voltage capacitor (40) is arranged in a rectangular hole of the PCB, the electric energy stored by the high-voltage capacitor (40) is more than or equal to 0.25 joule, and the power supply voltage is more than 40V and less than 150V; and a digital delay circuit or a welding analog delay circuit is welded on the PCB.

As shown in fig. 6, the structure diagram of the digital delay electronic detonator without initiating explosive in embodiment 1 provided by the utility model comprises: the plasma igniter is composed of a plasma igniter (100), a PCB (printed circuit board) 30, a middle plastic sealing plug (35), an opening plastic sealing plug (36), a leg wire (37), a high-voltage capacitor (40), a detonator metal shell (50), a third-stage high explosive (51), a reinforcing sleeve (52), a second-stage high explosive (53), a first-stage high explosive (54), a clamping waist (55) and a bayonet (56); the B surface of the plasma igniter (100) is tightly attached to the third-stage high explosive (51); the digital delay circuit is welded on the PCB (30); the foot wire (37) is a wire internally wrapped with two insulated cores; the explosive in the explosive loading structure of the non-primary explosive digital delay electronic detonator in the embodiment 1 is black soldier (RDX) or too much (PETN), and can be respectively filled with the black soldier (RDX) and the too much (PETN).

As shown in fig. 7, a schematic block diagram of a digital delay electronic detonator circuit without primary explosive of example 1 is shown, which comprises: the low-voltage stabilizing micro-processing circuit (E1) of LR763-1, the high-voltage triggering circuit (IC 2) of LR763-2, triodes T1 and T2, a high-voltage field effect transistor U1, a bridge D1, resistors R1-R5, a current limiting resistor Rx1, a resistor Rf1, a resistor Ru1, a high-voltage capacitor Cg1 and a plasma igniter DHJ; an 8-bit microprocessor with a low-voltage stabilizing circuit is arranged in the RLR763-1 low-voltage stabilizing micro-processing circuit (E1), the low-voltage stabilizing voltage output VCC=5V, the high-voltage input Vh is less than or equal to 150V, VT is a communication sending port, VR is a communication receiving port, tr-uot is a trigger signal output port, vk is a control charging output port, I/O is a bidirectional detection port, and GND is a negative power supply end; the Start port of the RLR763-2 high-voltage trigger circuit (IC 2) is a trigger signal input port, VCC is a 5V input port, vh is a high-voltage access port, trigger is a high-voltage trigger signal output port, KJ is a control charging input port, JC is a release signal port, vhuot is a high-voltage output port, and GND is a negative power supply end;

the working principle of the digital delay electronic detonator circuit without the initiating explosive in the embodiment 1 is divided into two stages;

the first stage, when a digital detonator (host) is connected to a voltage Uab=24V through a two-core foot line, a digital delay electronic detonator (slave) circuit is powered on and communicated, a voltage-form modulation communication signal Vf is sent by the digital detonator and is input into a base electrode of a triode T1 through the positive electrode of a bridge D1 and then through the voltage division of resistors R2 and R3, a collector electrode and an emitter electrode of the triode T1 are respectively connected with R4 and R5, and modulation voltage information output by the emitter electrode of the triode T1 is sent to a VR communication receiving port in an LR763-1 low-voltage stabilizing micro-processing circuit (E1) to finish master-slave communication; a modulated voltage signal sent by a VT communication sending port in an LR763-1 low-voltage stabilizing micro-processing circuit (E1) is sent to a base electrode of a triode T2, and is converted into a modulated current signal If through the triode T2 and a resistor R1, and the modulated current signal If is received by a digital primer (host) through a cathode of a bridge D1 and two-core foot lines to finish the slave main communication; the digital detonator (host) supplies power and communicates to a circuit of the digital delay electronic detonator (slave) when the voltage Uab=24V is accessed through the two-core foot making wires, and the digital detonator (host) sets delay time, working state checking, charging instructions, high-voltage electric energy discharging instructions, detonation instruction issuing and the like for the digital delay electronic detonator (slave) through program and digital communication; the digital delay time T is set by a program in the LR763-1 low-voltage stabilizing micro-processing circuit (E1), the set delay time can be arbitrarily set from 1ms … … to second, and the set delay time is stored in a memory in the LR763-1 low-voltage stabilizing micro-processing circuit (E1);

in the second stage, the digital detonator (host) and the digital delay electronic detonator are connected through two-wire pin lines to provide 24V voltage for digital communication, the digital detonator (host) gives a charging instruction, and at the moment, a KJ port in an RLR763-2 high-voltage trigger circuit (IC 2) is in a high level, so that an internal switch between a Vh high-voltage input port and a Vhuot high-voltage output port is closed for electric communication; providing converted voltage Uab=40V-150V for the digital delay electronic detonator through a two-core leg making wire by a digital detonator (host), and charging a high-voltage capacitor Cg1 through a current limiting resistor, a Vh high-voltage input port and a Vhuot high-voltage output port by the positive high voltage of the bridge D1; after the high-voltage capacitor Cg1 is charged, a digital primer (host) provides a digital delay electronic detonator with conversion voltage Uab=24V through a two-core pin-making wire, and gives an initiation instruction, at the moment, after the digital delay electronic detonator (slave) delays to expire according to a set delay time, tr-uot in an LR763-1 low-voltage stabilized micro-processing circuit (E1) sends a trigger signal to a Start port of an LR763-2 high-voltage trigger circuit (IC 2) to be accepted, so that the trigger port outputs a high-voltage trigger signal to drive a G grid electrode of a high-voltage field effect transistor U1, a drain electrode D and a source electrode S of the high-voltage field effect transistor U1 are conducted, and at the moment, electric energy stored by the high-voltage capacitor is discharged through a plasma igniter DHJ, the drain electrode D and the source electrode S of the high-voltage field effect transistor U1, so that the plasma igniter DHJ instantaneously generates high-temperature, high-voltage and high-speed plasma shock waves; the resistor Rf1 is a high-voltage capacitor electric energy bleeder resistor, and the bleeder current is smaller than 1mA; when the I/O port of the LR763-1 low-voltage stabilizing micro-processing circuit (E1) is at a low level, the port JC of the LR763-2 high-voltage triggering circuit (IC 2) is at a low level, and at the moment, the resistor Rf1 is grounded in the (IC 2) circuit through the Vf port to discharge the electric energy of the high-voltage capacitor;

as shown in fig. 8, the structure diagram of the initiating explosive-free simulated time delay electronic detonator of example 2 provided by the utility model comprises: the plasma igniter (100), the PCB (printed circuit board) 30, the middle plastic sealing plug 35, the mouth plastic sealing plug 36, the leg wire 37, the high-voltage capacitor 40, the detonator metal shell 50, the third-stage high explosive 51, the reinforcing sleeve 52, the second-stage high explosive 53, the first-stage high explosive 54, the waist clamping 55 and the bayonet 56; the plasma igniter (100) is closely attached to the third-stage high explosive (51); the PCB (30) is welded with an analog delay circuit; the foot wire (37) is a wire internally wrapped with three-core insulation. The explosive in the explosive loading structure of the non-primary explosive simulated time delay electronic detonator in the embodiment 2 is black soldier (RDX) or too much (PETN), and can be filled with the black soldier (RDX) and the too much (PETN) respectively.

As shown in fig. 9, a schematic block diagram of an initiating explosive-free analog delay electronic detonator circuit of example 2 is shown, comprising: LR763-3 low voltage stabilizing trigger circuit (E2), LR763-2 high voltage trigger circuit (IC 2), delay component resistor Rt and capacitor Ct, high voltage field effect tube U2, bridge D2, current limiting resistor Rx2, resistor Rf2, resistor Ru2, plasma igniter DHJ, high voltage capacitor Cg2; the Vh port in the LR763-3 low-voltage stable voltage trigger circuit (E2) is a high-voltage input less than or equal to 150V, the VCC=5V of the low-voltage stable voltage output port, the Tr-in port is a detonation voltage signal input less than or equal to 150V, the VD port is an RC delay component voltage supply port, the VR is a comparison voltage input port, the Tr-uot is a trigger signal output port, and the GND is a negative power supply grounding port; the Start port of the RLR763-2 high-voltage trigger circuit (IC 2) is a trigger signal input port, VCC is a 5V input port, vh is a high-voltage access port, trigger is a high-voltage trigger signal output port, KJ is a control charging input port, JC is a release signal port, vhuot is a high-voltage output port, and GND is a negative power supply grounding port.

In the embodiment 2, the product of the resistance Rt value of the delay component and the capacitance Ct value in the primer-free analog delay electronic detonator circuit is multiplied by a factor of 1.1 to form delay time T=1.1 Rtct, and the delay time T=1.1 Rtct is used as different delay sections T of the analog delay electronic detonator; the delay time of the analog circuit can be set from 0 seconds, 1 ms+/-1%, 5 ms+/-1%, 10 ms+/-1%, 15 ms+/-1%, 20 ms+/-1%, 25 ms+/-1%, … …, second+/-1% and 1% of instantaneous delay time to produce the non-initiating explosive analog delay electronic detonator with different delay time T;

the working principle of the primer-free simulation delay electronic detonator circuit in the embodiment 2 is as follows: the initiator is connected with the analog delay electronic detonator by adopting a three-wire system leg wire, wherein two wires a and b in the three-wire system leg wire of the initiator are Uab high-voltage output wires, and a wire c is an initiation signal wire; the Uab high-voltage output is larger than 40V and smaller than 150V, and the c-line detonating signal output voltage is smaller than 150V; when the exploder is connected with an analog delay electronic detonator through a three-wire system leg wire, the Uab high voltage is connected with the Vh end of an LR763-3 low-voltage stable triggering circuit (E2) through a positive voltage and a negative voltage output by a bridge D2 and is connected with the Vh end of an LR763-2 high-voltage triggering circuit (IC 2) through a current limiting resistor Rx2, at the moment, the VCC output 5V voltage of the LR763-3 low-voltage stable triggering circuit (E2) is connected with the VCC, KJ, JC port of the LR763-2 high-voltage triggering circuit (IC 2) to be high level, and the Vh and Vhuot ports of the LR763-2 high-voltage triggering circuit (IC 2) are electrically communicated to charge a high-voltage capacitor Cg2; when the trigger signal output by the Tr-uot port is input to the Start port of the (IC 2) when the charging voltage input VR port of the capacitor Ct is more than the internal reference voltage of the (E2), the trigger port of the (IC 2) outputs a high-voltage trigger signal to drive the G grid electrode of the high-voltage field effect transistor U2, so that the drain electrode D and the source electrode S of the high-voltage field effect transistor U2 are conducted, and at the moment, the electric energy stored by the high-voltage capacitor is discharged through a circuit of the plasma igniter DHJ, the drain electrode D and the source electrode S of the high-voltage field effect transistor U2, so that the plasma igniter DHJ instantaneously generates high-temperature, high-voltage and high-speed plasma shock waves; when the high voltage of the Uab provided by the exploder is more than 40V and less than 150V, the charge state is taken, when the high voltage of the Uab is=0V, the JC port of the (IC 2) is at a low level, and at the moment, the charged electric energy or residual electric energy of the high-voltage capacitor is discharged through the Vf port by the resistor Rf2 and the inside of the (IC 2) circuit is grounded.

The specific structure of the utility model needs to be described that the connection relation between the component modules adopted by the utility model is definite and realizable, and besides the specific description in the embodiment, the specific connection relation can bring about corresponding technical effects, and on the premise of not depending on execution of corresponding software programs, the technical problems of the utility model are solved, the types of the components, the modules and the specific components, the connection modes of the components and the expected technical effects brought by the technical characteristics are clear, complete and realizable, and the conventional use method and the expected technical effects brought by the technical characteristics are all disclosed in patents, journal papers, technical manuals, technical dictionaries and textbooks which can be acquired by a person in the field before the application date, or the prior art such as conventional technology, common knowledge in the field, and the like, so that the provided technical scheme is clear, complete and the corresponding entity products can be reproduced or obtained according to the technical means.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A plasma igniter comprising a plasma igniter (100) and a PCB circuit board (30), characterized in that: the plasma igniter (100) is a sheet of insulating board, copper-clad printed circuits are arranged on the front side and the back side of the insulating board, a first copper-clad foil (11) and a second copper-clad foil (12) are symmetrically arranged on the front side of the plasma igniter (100), a third copper-clad foil (21) and a fourth copper-clad foil (22) are symmetrically arranged on the back side of the plasma igniter (100), the central positions of the first copper-clad foil (11) and the third copper-clad foil (21) and the central positions of the second copper-clad foil (12) and the fourth copper-clad foil (22) are provided with communicated metal pad holes, and the metal pad holes are used for respectively connecting the first copper-clad foil (11) with the third copper-clad foil (21) and the second copper-clad foil (12) with the fourth copper-clad foil (22) into a whole;

the metal pad holes are specifically electrically connected with positive and negative electrode discharge circuits of a capacitor (40) arranged on the PCB (30);

the third copper-clad foil (21) and the fourth copper-clad foil (22) are connected through bridge foil wires (25) with inner sides being oppositely provided with convex electrodes for connection;

an L-shaped first foil electrode (26) is further vertically arranged on the inner side of the third copper-clad foil (21), an L-shaped second foil electrode (27) is further vertically arranged on the inner side of the fourth copper-clad foil (22), and extension ends of the first foil electrode (26) and the second foil electrode (27) are oppositely arranged on two sides of the bridge foil wire (25);

the PCB circuit board (30) is a slender circuit board, one end of the PCB circuit board (30) connected with the detonator is a narrow end, and one end of the PCB circuit board (30) provided with the capacitor (40) is a wide end;

the front surface of the plasma igniter (100) is welded at the narrow strip end of the PCB (30), so that the back surface of the plasma igniter (100) faces the outer side of the PCB (30), and the bridge foil wire (25) can discharge and explode towards the outer side of the plasma igniter to form high-temperature, high-pressure and high-speed vaporous plasma.

2. A plasma igniter as defined in claim 1 wherein: the front and back sides of the insulating plate of the plasma igniter (100) are specifically provided with vacuum metal plating films for manufacturing circuits by an etching process;

and the two sides of the PCB circuit board (30) are respectively provided with a circuit copper-clad foil.

3. A plasma igniter as defined in claim 1 wherein: one side of the plasma igniter (100) is also provided with a small hole (15).

4. The utility model provides a no initiating explosive time delay electronic detonator by plasma igniter preparation, includes by plasma igniter (100) and PCB circuit board (30) relative welding constitution integrated plasma igniter, its characterized in that: the plasma igniter is fixedly arranged in the detonator metal shell (50), and one end of the PCB (30) welded with the plasma igniter (100) is encapsulated in the clamping waist (55) through the plastic sealing plug (35);

the detonator metal shell (50) is connected with the charging shell (501) into a whole through a clamping waist (55), the charging shell (501) is sequentially filled with a first-stage high explosive (54), a second-stage high explosive (53) and a third-stage high explosive (51) from inside to outside, a reinforcing sleeve (52) is further arranged between the second-stage high explosive (53) and the third-stage high explosive (51), and the back surface of the plasma igniter (100) is tightly attached to the charging surface of the third-stage high explosive (51);

one end of the PCB circuit board (30) welded with the capacitor (40) is provided with a circuit board control port, a control leg wire (37) is externally connected with the circuit board control port and is connected with the detonator remotely, and the control leg wire (37) is packaged in the bayonet (56) through the opening plastic sealing plug (36).

5. An initiating-agent-free time-lapse electronic detonator made from a plasma igniter of claim 4 wherein: the digital delay circuit is welded on the PCB (30), and the control leg wire (37) is a two-wire system leg wire;

the components and parts that set up on PCB circuit board (30) include:

the digital delay circuit structure arranged on the PCB circuit board (30) is as follows:

6. An initiating-agent-free time-lapse electronic detonator made from a plasma igniter of claim 5 wherein: the positive electrode input end a and the negative electrode input end b are specifically externally connected with two-wire system power supply and communication sharing foot lines, digital communication voltage provided by the two ends of the input ends a and b is less than or equal to 24V, and charging voltage provided by the two ends of the input ends a and b is more than 40V and less than 150V.

7. An initiating-agent-free time-lapse electronic detonator made from a plasma igniter of claim 4 wherein: the PCB (30) is welded with an analog delay circuit, and the control leg wire (37) is a three-wire system leg wire;

the components and parts that set up on PCB circuit board (30) include:

the model LR763-3 voltage stabilizing trigger circuit E2, the model LR763-2 high-voltage trigger IC2, a delay resistor Rt, a delay capacitor Ct, a field effect tube U2, a bridge D2, a current limiting resistor Rx2, a resistor Rf2, a resistor Ru2, a high-voltage capacitor Cg2 and a plasma igniter DHJ, wherein the simulation delay circuit structure arranged on the PCB circuit board (30) is as follows:

8. An initiating-agent-free time-lapse electronic detonator made from a plasma igniter of claim 7 wherein: when a delay component in the analog delay circuit is set, the product of the delay resistance Rt value and the delay capacitance Ct value is multiplied by a coefficient of 1.1 to form delay time T=1.1 RtCt, the delay time T=1.1 RtCt is used as different delay sections T of the analog delay electronic detonator, and the delay components RtCt with different parameters are selected to be assembled into delay electronic detonators with different delay sections;

the delay time of the analog delay circuit is set according to the delay time period, specifically, the delay time is set from 0 seconds instantly, 1 ms+/-1%, 5 ms+/-1%, 10 ms+/-1%, 15 ms+/-1%, 20 ms+/-1%, 25 ms+/-1%, … …, second+/-1% and sub+/-1%.

9. An initiating-agent-free time-lapse electronic detonator made from a plasma igniter of claim 4 wherein: the detonator metal shell (50) is a metal tube with a variable diameter, and the diameter range of the metal tube is 6-16 cm.

10. An initiating-agent-free time-lapse electronic detonator made from a plasma igniter of claim 4 wherein: the third-stage high explosive (51), the second-stage high explosive (53) and the first-stage high explosive (54) are filled with either all of Hemsleyaite (RDX), all of Hemsleyaite (PETN), or both of Hemsleyaite (RDX) and Hemsleyaite (PETN).