CN114812303A - Plasma igniter and non-initiating-explosive time-delay electronic detonator prepared by same - Google Patents
Plasma igniter and non-initiating-explosive time-delay electronic detonator prepared by same Download PDFInfo
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- CN114812303A CN114812303A CN202210669150.6A CN202210669150A CN114812303A CN 114812303 A CN114812303 A CN 114812303A CN 202210669150 A CN202210669150 A CN 202210669150A CN 114812303 A CN114812303 A CN 114812303A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0811—Primers; Detonators characterised by the generation of a plasma for initiating the charge to be ignited
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
Abstract
The invention provides a plasma igniter and a non-initiating-explosive time-delay electronic detonator prepared by the same, belonging to the technical field of non-initiating-explosive time-delay electronic detonators; the technical problem to be solved is as follows: the plasma igniter and the improvement of the structure of the non-initiating-explosive time-delay electronic detonator prepared by the same are provided; the technical scheme for solving the technical problem is as follows: the plasma igniter comprises a plasma igniter and a PCB (printed Circuit Board), wherein copper foil-clad printed circuits are arranged on the front and back surfaces 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 surface of the plasma igniter, a third copper foil clad and a fourth copper foil clad are symmetrically arranged on the back surface of the plasma igniter, communicated metal pad holes are formed in the central positions of the first copper foil clad and the third copper foil clad and the central positions of the second copper foil clad and the fourth copper foil clad, and the metal pad holes are electrically connected with positive and negative electrodes of a capacitor arranged on the PCB; the invention is applied to the electronic detonator without the initiating explosive.
Description
Technical Field
The invention provides a plasma igniter and a non-initiating-explosive time-delay electronic detonator prepared by the same, and belongs to the technical field of non-initiating-explosive time-delay electronic detonators.
Background
As shown in fig. 1, the digital electronic detonator is a commonly used digital electronic detonator, specifically an electronic detonator with a low-voltage capacitor energy storage driving explosive charge structure, wherein a PCB (printed circuit board) in the electronic detonator is welded with an energy storage capacitor with the diameter of less than or equal to 6mm and the low voltage of less than or equal to 25V, a digital circuit and an ignition element, the three components are integrated into an electronic module and are installed in a metal detonator shell with the same caliber and the inner diameter of 6mm, a plastic leg wire is led out from the electronic module, a two-core insulated copper wire is wrapped in the leg wire, the other end of the two-core insulated copper wire is connected with two-wire wiring clamps of an upper box body and a lower box body, and then a two-wire field bus is connected with an initiator; the electronic detonator structure specifically comprises a metal detonator shell 100, a PCB 110, a resistance wire ignition head 120, a fire transfer cavity 130, a reinforcing cap 140, an initiating explosive 150, a secondary high explosive 160, a primary high explosive 170, a leg wire 200, a two-wire wiring clamp 300 and other parts, wherein a thin resistance wire 121 arranged at the resistance wire ignition head 120 is wrapped with the ignition explosive, and the thin resistance wire 121 can be heated to ignite the ignition explosive when the electric energy of a low-voltage energy storage capacitor is more than 20 mJ 0.02J.
At present, the working mechanism of the digital electronic detonator adopts a mechanism of 'combustion to detonation', specifically, low-voltage capacitance energy storage is discharged in a resistance wire ignition head 120 to heat and ignite gunpowder → flame passes through a fire transfer cavity 130 → an initiating explosive 150 is ignited through a small hole in the center of a reinforcing cap 140 → the initiating explosive 150 is combusted to detonate → initial detonation wave excites a first-pole high explosive 160 to detonate → the detonation wave passes through a second-level high explosive 170 to output a strong detonation wave; the primary explosive 150 is a primary explosive with extremely high mechanical sensitivity filled in the detonator, generally is nickel hydrazine nitrate or dinitrodiazophenol, the electronic detonator filled with the primary explosive is a high-risk product, the electronic detonator with the primary explosive charging structure is very easy to have explosion accidents in the processes of daily production, transportation, storage and use in blasting engineering, and in view of avoiding the structural design of the detonator containing the primary explosive, the structure of the current electronic detonator needs to be improved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to solve the technical problems that: provides a plasma igniter and an improvement of a structure of a non-initiating-explosive time-delay electronic detonator prepared by the same.
In order to solve the technical problems, the invention adopts the technical scheme that: the plasma igniter comprises a plasma igniter and a PCB (printed Circuit Board), wherein the plasma igniter is specifically an insulating plate, copper-clad printed circuits are arranged on the front and back surfaces of the insulating plate, a first copper-clad foil and a second copper-clad foil are symmetrically arranged on the front surface of the plasma igniter, a third copper-clad foil and a fourth copper-clad foil are symmetrically arranged on the back surface of the plasma igniter, communicated metal pad holes are formed in the central positions of the first copper-clad foil and the third copper-clad foil and the central positions of the second copper-clad foil and the fourth copper-clad foil, and the first copper-clad foil and the third copper-clad foil and the second copper-clad foil and the fourth copper-clad foil are connected into a whole through the metal pad holes respectively;
the metal pad hole is electrically connected with a positive electrode discharge circuit and a negative electrode discharge circuit of a capacitor arranged on the PCB;
the third copper-clad foil and the fourth copper-clad foil are connected through a bridge foil wire with the inner sides oppositely provided with bump electrodes for connection;
the inner side of the third copper-clad foil is also vertically provided with an L-shaped first foil electrode, the inner side of the fourth copper-clad 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 line;
the PCB is a slender circuit board, one end of the PCB, which is connected with the detonator, is a narrow end, and the end of the PCB, which is provided with the capacitor, is a wide end;
the front side of the plasma igniter is welded at the narrow strip end of the PCB, the back side 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 vapor plasma.
The front and back surfaces of the insulating plate of the plasma igniter are specifically etched by vacuum plating metal films to manufacture a circuit;
and circuit copper clad foils are arranged on two surfaces of the PCB.
And one side of the plasma igniter is also provided with a small hole.
The ignition-free time-delay electronic detonator prepared by the plasma igniter comprises the plasma igniter and a PCB circuit board which are welded in a butt joint mode to form an integrated plasma igniter, wherein the plasma igniter is installed and fixed inside a metal shell of the detonator, and one end, welded with the plasma igniter, of the PCB circuit board is packaged in a clamping waist through a plastic sealing plug;
the metal shell of the detonator is connected with the charging shell into a whole through a clamping 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 arranged between the second-stage high explosive and the third-stage high explosive, and the reverse side of the plasma igniter is tightly attached to the charging surface of the third-stage high explosive;
the one end that PCB circuit board welding has the condenser is provided with circuit board control port, the external control leg line of circuit board control port and detonator remote connection, the control leg line passes through oral area plastics sealing plug encapsulation in the bayonet socket.
A digital delay circuit is welded on the PCB, and the control pin line is specifically a two-wire pin line;
the components and parts that set up on the PCB circuit board include:
the low-voltage-stabilizing microprocessing circuit E1 with the model of LR763-1, the high-voltage trigger IC1 with the model of LR763-2, the triode T1, the triode T2, the field-effect tube U1, the bridge D1, the resistors R1-R5, the current-limiting resistor Rx1, the resistor Rf1, the resistor Ru1, the high-voltage capacitor Cg1 and the plasma igniter DHJ, wherein the digital time delay circuit structure arranged on the PCB circuit board is as follows:
a pin 1 of the bridge D1 is sequentially connected in parallel with a collector of a triode T2, one end of a resistor R2, one end of a resistor R4 and a Vh end of a low-voltage-stabilizing microprocessing circuit E1 and then connected with one end of a current-limiting resistor Rx1, and the other end of the current-limiting resistor Rx1 is connected with the Vh end of a high-voltage trigger IC 1;
the base electrode of the triode T2 is connected with the VT end of the low-voltage-stabilizing microprocessing 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 is 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 the resistor R5 in parallel and then is 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 a high-voltage trigger IC 1;
the Vk end of the low-voltage-stabilizing microprocessing circuit E1 is connected with the KJ end of a high-voltage trigger IC 1;
the IO end of the low-voltage-stabilizing microprocessing 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 a high-voltage trigger IC 1;
the Vhuot end of the high-voltage trigger IC1 is connected with the anode of a high-voltage capacitor Cg1 in parallel and then connected with one metal electrode of a plasma igniter DHJ, the other metal electrode of the plasma igniter DHJ is connected with one end of a resistor Rf1 in parallel and then connected with the drain of a field-effect tube U1, and the other end of the resistor Rf1 is connected with the Vf end of a 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 is connected with the gate 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 microprocessing 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 pins of the electric bridge D1 are connected with the positive input end a of the digital delay circuit;
and a pin 2 of the electric bridge D1 is connected with a negative pole input end b of the digital delay circuit.
The positive input end a and the negative input end b are specifically externally connected with two-wire power supply and communication shared pin wires, the digital communication voltage provided at the two ends of the input ends a and b is less than or equal to 24V, and the charging voltage provided at 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 pin line is specifically a three-wire pin line;
the components and parts that set up on the PCB circuit board include:
the plasma igniter comprises a voltage-stabilizing trigger circuit E2 with the model of LR763-3, a high-voltage trigger IC2 with the model of LR763-2, 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 analog delay circuit structure arranged on a PCB circuit board is as follows:
a pin 1 of the bridge D2 is connected in parallel with a Vh end of a voltage-stabilizing trigger circuit E2 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 a Vh end of a 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 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 Vhuot end of the high-voltage trigger IC2 is connected with the anode of a high-voltage capacitor Cg2 in parallel and then connected with one metal electrode of a plasma igniter DHJ, the other metal electrode of the plasma igniter DHJ is connected with one end of a resistor Rf2 in parallel and then connected with the drain of a field-effect tube U2, and the other end of the resistor Rf2 is connected with the Vf end of a 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 is connected with the gate of a field-effect tube 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 of the bridge D2 in parallel and then grounded;
the 4 pins of the bridge D2 are connected with the input end a of the analog delay circuit;
pin 2 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 assembly in the analog delay circuit is set, the product of the Rt value of the delay resistance and the Ct value of the delay capacitance is multiplied by a coefficient 1.1 to form delay time T =1.1RtCt which is used as different delay time periods T of the analog delay electronic detonator, and the delay assemblies RtCt with different parameters are selected to be assembled into the delay electronic detonators with different delay time periods;
the delay time of the analog circuit is set from instantaneous 0 second, 1ms plus or minus 1%, 5ms plus or minus 1%, 10ms plus or minus 1%, 15ms plus or minus 1%, 20ms plus or minus 1%, 25ms plus or minus 1%, … …, second plus or minus 1% and minute plus or minus 1%.
The metal shell of the detonator is a metal tube with variable diameter, and the diameter range of the metal tube is 6-16 cm.
The charges of the third-stage high explosive, the second-stage high explosive and the first-stage high explosive are all filled with hexogen RDX, or are all filled with Taian PETN, or are respectively filled with hexogen RDX and Taian PETN.
Compared with the prior art, the invention has the beneficial effects that: the invention improves the structure of the existing digital electronic detonator, provides a plasma igniter and a non-initiating-explosive delayed electronic detonator prepared by the same, and aims to avoid filling initiating explosive in the electronic detonator, adopt the electric energy stored by a high-voltage capacitor, discharge and explode in an enhanced high-voltage plasma igniter, instantaneously generate high-energy plasma shock waves, directly excite a high explosive by the plasma shock waves to form detonation, and the electronic detonator is of a non-initiating-explosive charging structure with a mechanism of 'plasma shock waves to detonation'; the invention adopts an enhanced high-voltage plasma igniter, a high-voltage (150V is more than or equal to VH is more than or equal to 40V), an energy storage capacitor, a PCB circuit board and a detonator without initiating explosive to be assembled, thereby forming the electronic detonator without initiating explosive, and a digital delay driving circuit or an analog delay driving circuit is welded on the PCB circuit board to realize the purpose of delayed detonation of the electronic detonator.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a conventional digital electronic detonator structure;
FIG. 2 is an enlarged view of the front side of the plasma igniter according to the present invention;
FIG. 3 is an enlarged view of the reverse side of the plasma igniter of the present invention;
FIG. 4 is a schematic structural view of a plasma igniter according to the present invention;
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a schematic structural diagram of the digital delay electronic detonator without the initiating explosive of the present invention;
FIG. 7 is a circuit diagram of a digital delay electronic detonator without a primer of the present invention;
FIG. 8 is a schematic structural view of a non-initiating explosive simulated time delay electronic detonator of the present invention;
FIG. 9 is a circuit diagram of a non-initiating-explosive simulated time-delay electronic detonator of the present invention;
the numerical values in the figure mean: plasma igniter (100), PCB circuit board (30), first copper foil (11), second copper foil (12), third copper foil (21), fourth copper foil (22), aperture (15), bridge foil line (25), first foil electrode (26), second foil electrode (27), condenser (40), detonator metal casing (50), plastics sealing plug (35), oral area plastics sealing plug (36), control leg line (37), card waist (55), bayonet socket (56), powder charge shell (501), first level explosive (54), second level explosive (53), third level explosive (51), enhancement cover (52).
Detailed Description
The invention relates to a non-initiating explosive electronic detonator structure applied to an enhanced high-voltage plasma igniter, which is characterized in that a high-voltage capacitor stores energy to drive the enhanced high-voltage plasma igniter to instantaneously discharge, explode and vaporize to form high-temperature, high-pressure and high-speed gaseous plasma shock waves to excite the non-initiating explosive electronic detonator;
as shown in fig. 2 and 3, the enhanced high voltage plasma igniter 100 provided by the present invention is enlarged, and the enhanced high voltage plasma igniter is formed by using a printed circuit board with copper foil coated on both sides, or by using vacuum metal-plated films on both sides of an insulating plate to perform an etching process to manufacture a circuit; in the figure, copper clad printed circuits are respectively arranged on the front surface and the back surface of a circular plasma igniter insulating plate (100), namely the front surface (A) and the back surface (B); the front surface of the copper clad laminate consists of a first copper clad laminate (11), a second copper clad laminate (12), a metalized pad hole and a small hole (15); the reverse side of the metal foil is composed of a third copper-clad foil (21), a fourth copper-clad foil (22), a metalized pad hole, a bridge foil line (25), a first foil electrode (26) and a second foil electrode (27); the A surface and the B surface of the printed circuit board are symmetrically provided with copper-clad foils, and metallized 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 pad holes for connecting the positive electrode and the negative electrode of the storage electric energy capacitor; the line width of the bridge foil line (25) on the B surface is micrometer order of magnitude, and the two copper-clad foils are connected through a protruding electrode; the first foil electrode (26) and the second foil electrode (27) of the B surface are vertically arranged on two sides of the bridge foil line (25); the working principle of the invention is as follows: the switch tube controls the positive and negative high voltage electrodes of the capacitor Cg for storing electric energy to be electrically connected with the metalized pad hole by welding, so that two copper-clad foils are instantaneously discharged and vaporized in the bridge foil line (25) to form conductive high-temperature vapor-state plasma, meanwhile, the foil electrodes vertically arranged at two sides of the bridge foil line (25) continue to enhance discharge in the conductive high-temperature vapor-state plasma to promote the conductive high-temperature vapor-state plasma to accelerate expansion and form high-temperature plasma strong shock waves to directly excite the high explosive to form detonation, and the working mechanism is called as a mechanism of converting the plasma shock waves into the detonation; the directly activated high explosive may be hexogen (RDX) or taian (PETN).
Fig. 4 and 5 are structural views illustrating the enhanced high voltage plasma igniter according to the present invention welded to a PCB, 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 clad of the two-sided circuit, the welding part of the plasma igniter and the PCB, and the high-voltage capacitor (40); the centers of a first copper clad foil and a second copper clad foil which are symmetrical in A plane of the plasma igniter (100) in FIG. 4 are vertically butted with one end of a narrow strip of a PCB (printed circuit board); in the plasma igniter (100) in FIG. 5, the copper clad foil on the surface A is butted with the copper clad foil on the PCB, and a welding part is reserved; the view of arrow B in FIG. 5 is that the bridge foil line (25) is arranged on the surface B of the plasma igniter (100) and faces outwards, so that the outwards-facing bridge foil line discharges to form plasma; the high-voltage capacitor (40) is arranged in a rectangular hole of the PCB, the electric energy stored in 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 an analog delay circuit is welded on the PCB.
As shown in fig. 6, it is a structural diagram of a digital delay electronic detonator without initiating agent in embodiment 1 provided by the present invention, which includes: the plasma igniter comprises 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-level high explosive (51), a reinforcing sleeve (52), a second-level high explosive (53), a first-level high explosive (54), a clamping waist (55) and a clamping opening (56); the surface B of the plasma igniter (100) is tightly attached to the third-stage high explosive (51); a digital delay circuit is welded on the PCB (30); the leg wire (37) is a conducting wire with two insulated cores wrapped inside; the high explosive in the charging structure of the non-initiating explosive digital time-delay electronic detonator in the embodiment 1 is hexogen (RDX) or Taian (PETN), and can be respectively charged by hexogen (RDX) and Taian (PETN).
Fig. 7 shows a schematic block diagram of a circuit of the digital delay electronic detonator without the initiating explosive in embodiment 1, which includes: LR763-1 low-voltage-stabilizing microprocessing circuit (E1), LR763-2 high-voltage trigger circuit (IC 2), triodes T1 and T2, high-voltage field effect tube U1, bridge D1, resistors R1-R5, current-limiting resistor Rx1, resistor Rf1, resistor Ru1, high-voltage capacitor Cg1 and plasma igniter DHJ; the RLR763-1 low-voltage-stabilizing microprocessing circuit (E1) is internally provided with an 8-bit microprocessor of a low-voltage-stabilizing circuit, 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; a 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 discharge 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;
in the first stage, when a digital detonator (host) is connected with voltage Uab =24V through a two-core pin wire and supplies power and communicates with a digital delay electronic detonator (slave) circuit, a voltage-shaped modulation communication signal Vf sent by the digital detonator is input to a base electrode of a triode T1 through a positive electrode of a bridge D1 and then divided by 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 complete master-slave communication; a modulation voltage signal sent by a VT communication sending port in an LR763-1 low-voltage-stabilizing microprocessing circuit (E1) is sent to a base electrode of a triode T2 and is converted into a modulation current signal If through a triode T2 and a resistor R1, and the modulation current signal If is received by a digital initiator (host) through a negative electrode of a bridge D1 and a two-core pin wire to complete slave-master communication; the digital detonator (host) supplies power and communicates with a digital time-delay electronic detonator (slave) circuit when the two-core pin wire is connected with voltage Uab =24V, and sets time delay time, work state inspection, charging instruction, high-voltage capacitor electric energy discharge instruction, detonation instruction issuing and the like for the digital time-delay electronic detonator (slave) through program and digital communication; the digital delay time T is set by a program in an LR763-1 low-voltage-stabilizing microprocessing circuit (E1), the set delay time can be arbitrarily set from 1ms … … to a second level, and the set delay time is stored in a memory in the LR763-1 low-voltage-stabilizing microprocessing circuit (E1);
in the second stage, the digital detonator (host) and the digital delay electronic detonator are connected through two wire system leg wires to provide 24V voltage for digital communication, the digital detonator (host) issues a charging instruction, and a KJ port in an RLR763-2 high-voltage trigger circuit (IC 2) is at a high level, so that an internal switch between a Vh high-voltage input port and a Vhuot high-voltage output port is closed and electrically communicated; the converted voltage Uab =40V-150V is provided for the digital time delay electronic detonator through a two-core pin wire by a digital detonator (host), and the high-voltage capacitor Cg1 is charged through a current-limiting resistor, a Vh high-voltage input port and a Vhuot high-voltage output port by the positive high voltage of a bridge D1; after the high-voltage capacitor Cg1 is charged, the digital detonator (host) provides and converts the voltage Uab =24V for the digital time-delay electronic detonator through the two-core pin wire, a detonation instruction is issued, at the moment, after the digital time-delay electronic detonator (slave) is delayed to expire according to the set delay time, Tr-uot in an LR763-1 low-voltage-stabilizing microprocessing circuit (E1) sends a trigger signal to a Start port of an LR763-2 high-voltage trigger circuit (IC 2) to be received, so that a trigger port outputs a high-voltage trigger signal to drive a G grid of a high-voltage field-effect tube U1, a drain D and a source S of the high-voltage field-effect tube U1 are conducted, and at the moment, the electric energy stored by the high-voltage capacitor is discharged through a loop of a plasma igniter DHJ, the drain D and the source S of the high-voltage field-effect tube U1, so that the plasma igniter DHJ instantly generates high-temperature, high-pressure, high-speed and other plasma shock waves; the resistor Rf1 is an electric energy discharge resistor of the high-voltage capacitor, and the discharge current is less than 1 mA; when the I/O port of the LR763-1 low-voltage-stabilizing microprocessing circuit (E1) is at a low level and the JC port JC of the LR763-2 high-voltage trigger circuit (IC 2) is at a low level, the resistor Rf1 is grounded to discharge the electric energy of the high-voltage capacitor in the circuit (IC 2) through the Vf port at the moment;
as shown in fig. 8, it is a structure diagram of the non-initiating-explosive simulated time-delay electronic detonator in embodiment 2 provided by the present invention, which includes: the device comprises 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-level high explosive (51), a reinforcing sleeve (52), a second-level high explosive (53), a first-level high explosive (54), a clamping waist (55) and a clamping opening (56); the plasma igniter (100) is tightly attached to the third-stage high explosive (51); the PCB circuit board (30) is welded with an analog delay circuit; the leg wire (37) is a conducting wire wrapped with three-core insulation. The high explosive in the charging structure of the non-initiating explosive simulated time-delay electronic detonator in the example 2 is hexogen (RDX) or Taian (PETN), and can be respectively filled with the hexogen (RDX) and the Taian (PETN).
Fig. 9 is a schematic block diagram of a circuit of the non-initiating-explosive analog delay electronic detonator in embodiment 2, which includes: LR763-3 low-voltage-stabilizing trigger circuit (E2), LR763-2 high-voltage trigger circuit (IC 2), time-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 Cg 2; in the LR763-3 low-voltage-stabilizing trigger circuit (E2), a Vh port is a high-voltage input port which is less than or equal to 150V, a low-voltage-stabilizing voltage output port VCC =5V, a Tr-in port is an initiation voltage signal input port which is less than or equal to 150V, a VD port is an RC time-delay assembly voltage supply port, VR is a comparison voltage input port, Tr-uot is a trigger signal output port, and GND is a negative power supply grounding port; the RLR763-2 high-voltage trigger circuit (IC 2) is characterized in that a Start port 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 discharge signal port, Vhuot is a high-voltage output port, and GND is a negative power supply ground port.
In the embodiment 2, the product of the resistance Rt value and the capacitance Ct value of the delay assembly in the circuit of the analog delay electronic detonator without the initiating explosive is multiplied by a coefficient 1.1 to form delay time T =1.1Rtct, and the delay time T is used as different delay time periods T of the analog delay electronic detonator; the delay time of the analog circuit is set from instantaneous 0 second, 1ms plus or minus 1%, 5ms plus or minus 1%, 10ms plus or minus 1%, 15ms plus or minus 1%, 20ms plus or minus 1%, 25ms plus or minus 1%, … …%, second plus or minus 1% to produce the initiating explosive-free analog delay electronic detonator with different delay times T;
the working principle of the circuit of the non-initiating explosive simulated time-delay electronic detonator in the embodiment 2 is as follows: the detonator adopts a three-wire system leg wire to connect the analog delay electronic detonator, two wires a and b in the three-wire system leg wire of the detonator are Uab high-voltage output wires, and a wire c is a detonation signal wire; the Uab high-voltage output is more than 40V and less than 150V, and the output voltage of the c-line detonation signal is less than 150V; when the initiator is connected with the analog delay electronic detonator through a three-wire system leg wire, Uab high voltage is connected with a Vh end of an LR763-3 low-voltage-stabilizing trigger circuit (E2) through positive and negative voltage output by an electric bridge D2 and is connected with a Vh end of an LR763-2 high-voltage trigger circuit (IC 2) through a current-limiting resistor Rx2, VCC output 5V voltage of the LR763-3 low-voltage-stabilizing trigger circuit (E2) is connected with VCC, KJ and JC ports of the LR763-2 high-voltage trigger circuit (IC 2) at high level, and Vh and Vhuot ports of the LR763-2 high-voltage trigger circuit (IC 2) at the high level are electrically communicated to charge a high-voltage capacitor Cg 2; when an initiator provides a voltage input LR763-3 through a c-wire initiation signal wire to a Tr-in port of a low-voltage stabilization trigger circuit (E2) which is less than 150V, a VD port outputs a high level to charge a time delay component Rtct, when a charging voltage input VR port of a capacitor Ct and an internal reference voltage (E2) are relatively exceeded, a trigger signal output by a Tr-uot port is input to a Start port of an IC2, a trigger port of an IC2 outputs a high-voltage trigger signal to drive a G grid of a high-voltage field-effect tube U2, a drain D and a source S of the high-voltage field-effect tube U2 are conducted, and electric energy stored by a high-voltage capacitor is discharged through a plasma igniter DHJ, the drain D and the source S of the high-voltage field-effect tube U2, so that the plasma igniter DHJ can instantly generate high-temperature, high-voltage and high-speed plasma shock waves; the Uab high voltage provided by the initiator is greater than 40V and less than 150V, and is used as a charging state, when the Uab high voltage =0V, the JC port of (IC 2) is at a low level, and the charged electric energy or residual electric energy of the high-voltage capacitor is discharged from the resistor Rf2 through the Vf port inside (IC 2) circuit.
It should be noted that, regarding the specific structure of the present invention, the connection relationship between the modules adopted by the present invention is determined and can be realized, except for the specific description in the embodiment, the specific connection relationship can bring the corresponding technical effect, and the technical problem proposed by the present invention is solved on the premise of not depending on the execution of the corresponding software program, the models and the mutual connection modes of the components, modules and specific components appearing in the present invention, and the conventional using method and the expectable technical effect brought by the above technical features, except for the specific description, all belong to the disclosed contents in the patents, journal articles, technical manuals, technical dictionaries, textbooks, or the prior art such as the conventional technology, the common general knowledge in the art, which can be acquired by the skilled in the art before the application date, or belong to the prior art such as the conventional technology, the common general knowledge in the art, and do not need to be described in detail, so that the technical scheme provided by the present invention is clear and can be realized, Is complete and realizable, and can reproduce or obtain corresponding entity products according to the technical means.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. Plasma igniter, including plasma igniter (100) and PCB circuit board (30), its characterized in that: the plasma igniter is characterized in that the plasma igniter (100) is specifically an insulating plate, copper foil-clad printed circuits are arranged on the front and back surfaces of the insulating plate, a first copper foil (11) and a second copper foil (12) are symmetrically arranged on the front surface of the plasma igniter (100), a third copper foil (21) and a fourth copper foil (22) are symmetrically arranged on the back surface of the plasma igniter (100), communicated metal pad holes are formed in the central positions of the first copper foil (11) and the third copper foil (21) and the central positions of the second copper foil (12) and the fourth copper foil (22), and the first copper foil (11) and the third copper foil (21) are connected into a whole, and the second copper foil (12) and the fourth copper foil (22) are connected into a whole through the metal pad holes respectively;
the metal pad hole is electrically connected with a positive electrode discharge circuit and a negative electrode discharge circuit 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 a bridge foil wire (25) with the inner sides oppositely provided with protruding 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 the extending ends of the first foil electrode (26) and the second foil electrode (27) are oppositely arranged on two sides of the bridge foil line (25);
the PCB (30) is a slender circuit board, one end of the PCB (30) connected to the detonator is a narrow end, and one end of the PCB (30) provided with the capacitor (40) is a wide end;
the front side of the plasma igniter (100) is welded at the narrow end of the PCB (30), so that the back side of the plasma igniter (100) faces the outer side of the PCB (30), and the bridge foil wire (25) can be discharged and exploded towards the outer side of the plasma igniter to form high-temperature, high-pressure and high-speed gaseous plasma.
2. The plasma igniter as claimed in claim 1, wherein: the front and back surfaces of an insulating plate of the plasma igniter (100) are specifically etched by adopting vacuum plating metal films to manufacture a circuit;
and circuit copper clad foils are arranged on two surfaces of the PCB (30).
3. The plasma igniter as claimed in claim 1, wherein: one side of the plasma igniter (100) is also provided with a small hole (15).
4. The non-initiating explosive time-delay electronic detonator prepared by the plasma igniter comprises the plasma igniter integrated by relative welding of the plasma igniter (100) and a PCB (30), and is characterized in that: the plasma igniter is fixedly installed inside a detonator metal shell (50), and one end of the PCB (30) welded with the plasma igniter (100) is packaged in a clamping waist (55) through a plastic sealing plug (35);
the detonator metal shell (50) is connected with the explosive loading shell (501) into a whole through a clamping waist (55), the explosive loading 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 reverse side of the plasma igniter (100) is tightly attached to the explosive loading surface of the third-stage high explosive (51);
the welding of PCB circuit board (30) has the one end of condenser (40) to be provided with circuit board control port, external control leg line (37) of circuit board control port and detonator remote connection, control leg line (37) are through oral area plastics sealing plug (36) encapsulation in bayonet socket (56).
5. The initiating explosive-free time delay electronic detonator prepared from a plasma igniter according to claim 4, wherein: a digital delay circuit is welded on the PCB (30), and the control pin line (37) is a two-wire pin line;
the components and parts that set up on PCB circuit board (30) include:
the low-voltage-stabilizing microprocessing circuit E1 with the model of LR763-1, the high-voltage trigger IC1 with the model of LR763-2, the triode T1, the triode T2, the field-effect tube U1, the bridge D1, the resistors R1-R5, the current-limiting resistor Rx1, the resistor Rf1, the resistor Ru1, the high-voltage capacitor Cg1 and the plasma igniter DHJ, wherein the digital delay circuit structure arranged on the PCB circuit board (30) is as follows:
a pin 1 of the bridge D1 is sequentially connected in parallel with a collector of a triode T2, one end of a resistor R2, one end of a resistor R4 and a Vh end of a low-voltage-stabilizing microprocessing circuit E1 and then connected with one end of a current-limiting resistor Rx1, and the other end of the current-limiting resistor Rx1 is connected with the Vh end of a high-voltage trigger IC 1;
the base electrode of the triode T2 is connected with the VT end of the low-voltage-stabilizing microprocessing 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 is 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 the resistor R5 in parallel and then is 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 a high-voltage trigger IC 1;
the Vk end of the low-voltage-stabilizing microprocessing circuit E1 is connected with the KJ end of a high-voltage trigger IC 1;
the IO end of the low-voltage-stabilizing microprocessing 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 a high-voltage trigger IC 1;
the Vhuot end of the high-voltage trigger IC1 is connected with the anode of a high-voltage capacitor Cg1 in parallel and then connected with one metal electrode of a plasma igniter DHJ, the other metal electrode of the plasma igniter DHJ is connected with one end of a resistor Rf1 in parallel and then connected with the drain of a field-effect tube U1, and the other end of the resistor Rf1 is connected with the Vf end of a 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 is connected with the gate 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 microprocessing 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 pins of the electric bridge D1 are connected with the positive input end a of the digital delay circuit;
and a pin 2 of the electric bridge D1 is connected with a negative pole input end b of the digital delay circuit.
6. The initiating explosive-free time delay electronic detonator prepared from a plasma igniter according to claim 5, wherein: the positive input end a and the negative input end b are externally connected with two-wire power supply and communication shared pin wires, digital communication voltage provided at two ends of the input ends a and b is less than or equal to 24V, and charging voltage provided at two ends of the input ends a and b is more than 40V and less than 150V.
7. The initiating explosive-free time delay electronic detonator prepared from a plasma igniter according to claim 4, wherein: the PCB (30) is welded with an analog delay circuit, and the control pin line (37) is a three-wire pin line;
the components and parts that set up on PCB circuit board (30) include:
the plasma igniter comprises a voltage-stabilizing trigger circuit E2 with the model of LR763-3, a high-voltage trigger IC2 with the model of LR763-2, 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 analog delay circuit structure arranged on a PCB circuit board (30) is as follows:
a pin 1 of the bridge D2 is connected in parallel with a Vh end of a voltage-stabilizing trigger circuit E2 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 a Vh end of a 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 one end of a delay capacitor Ct after being connected with the other end of the delay resistor Rt in parallel;
the Truot end of the voltage-stabilizing trigger circuit E2 is connected with the Start end of the high-voltage trigger IC 2;
the Vhuot end of the high-voltage trigger IC2 is connected with the anode of a high-voltage capacitor Cg2 in parallel and then connected with one metal electrode of a plasma igniter DHJ, the other metal electrode of the plasma igniter DHJ is connected with one end of a resistor Rf2 in parallel and then connected with the drain of a field-effect tube U2, and the other end of the resistor Rf2 is connected with the Vf end of a 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 is connected with the gate of a field-effect tube 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 of the bridge D2 in parallel and then grounded;
the 4 pins of the bridge D2 are connected with the input end a of the analog delay circuit;
pin 2 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.
8. The initiating explosive-free time delay electronic detonator prepared from a plasma igniter according to claim 7, wherein: when a delay assembly in the analog delay circuit is set, the product of the Rt value of the delay resistance and the Ct value of the delay capacitance is multiplied by a coefficient 1.1 to form delay time T =1.1RtCt which is used as different delay time periods T of the analog delay electronic detonator, and the delay assemblies RtCt with different parameters are selected to be assembled into the delay electronic detonators with different delay time periods;
the delay time of the analog circuit is set from instantaneous 0 second, 1ms plus or minus 1%, 5ms plus or minus 1%, 10ms plus or minus 1%, 15ms plus or minus 1%, 20ms plus or minus 1%, 25ms plus or minus 1%, … …, second plus or minus 1% and minute plus or minus 1%.
9. The initiating explosive-free time delay electronic detonator prepared from a plasma igniter according to claim 4, wherein: the detonator metal shell (50) is a metal pipe with variable diameter, and the diameter range of the metal pipe is 6-16 cm.
10. The initiating explosive-free time delay electronic detonator prepared from a plasma igniter according to 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 hexogen (RDX) or Taian (PETN) or are filled with hexogen (RDX) and Taian (PETN) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210669150.6A CN114812303A (en) | 2022-06-14 | 2022-06-14 | Plasma igniter and non-initiating-explosive time-delay electronic detonator prepared by same |
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|---|---|---|---|
| CN202210669150.6A CN114812303A (en) | 2022-06-14 | 2022-06-14 | Plasma igniter and non-initiating-explosive time-delay electronic detonator prepared by same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096151A (en) * | 2022-08-24 | 2022-09-23 | 山西宸润隆科技有限责任公司 | High-voltage digital circuit controlled electronic detonator without initiating explosive |
-
2022
- 2022-06-14 CN CN202210669150.6A patent/CN114812303A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096151A (en) * | 2022-08-24 | 2022-09-23 | 山西宸润隆科技有限责任公司 | High-voltage digital circuit controlled electronic detonator without initiating explosive |
| CN115096151B (en) * | 2022-08-24 | 2022-11-08 | 山西宸润隆科技有限责任公司 | High-voltage digital circuit controlled electronic detonator without initiating explosive |
| CN115597447A (en) * | 2022-08-24 | 2023-01-13 | 山西宸润隆科技有限责任公司（Cn） | High-voltage digital circuit integrated chip controlled electronic detonator without initiating explosive |
| CN115597447B (en) * | 2022-08-24 | 2023-07-21 | 山西宸润隆科技有限责任公司 | Electronic detonator without initiating explosive controlled by high-voltage digital circuit integrated chip |
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