CN213932246U - Electric detonator based on plasma igniter excited by analog circuit delay element - Google Patents
Electric detonator based on plasma igniter excited by analog circuit delay element Download PDFInfo
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- CN213932246U CN213932246U CN202022964407.XU CN202022964407U CN213932246U CN 213932246 U CN213932246 U CN 213932246U CN 202022964407 U CN202022964407 U CN 202022964407U CN 213932246 U CN213932246 U CN 213932246U
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- 238000004146 energy storage Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- 239000011888 foil Substances 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- 239000011889 copper foil Substances 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
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- 239000003380 propellant Substances 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims 3
- 239000002360 explosive Substances 0.000 description 18
- 238000005474 detonation Methods 0.000 description 15
- 239000000843 powder Substances 0.000 description 10
- 230000000977 initiatory effect Effects 0.000 description 9
- 230000005284 excitation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
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- 230000035945 sensitivity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to an electric detonator based on an analog circuit delay element excited plasma igniter, which belongs to the technical field of electric detonators based on an analog circuit delay element excited plasma igniter; the technical problem to be solved is as follows: the improvement of the hardware structure of the electric detonator based on the plasma igniter excited by the analog circuit delay element is provided; the technical scheme for solving the technical problem is as follows: the detonator comprises a front detonator shell and a rear detonator shell, wherein the diameter of the front detonator shell is larger than that of the rear detonator shell, a pressed sealing clamping waist is arranged between the front detonator shell and the rear detonator shell, and a pressed sealing clamping opening is arranged at the port part of the front detonator shell; a zero energy storage capacitor and a delay control module are arranged in the front detonator shell, the output end of the delay control module is connected with the zero energy storage capacitor, and the input end of the delay control module is connected with a three-wire system detonator leg wire; a plasma igniter and a detonator charge are arranged in the rear detonator shell; the utility model discloses be applied to electric detonator.
Description
Technical Field
The utility model relates to an electric detonator based on analog circuit postpones body excitation plasma igniter belongs to the electric detonator technical field based on analog circuit postpones body excitation plasma igniter.
Background
The basic structure of the existing industrial delay element electric detonator is shown in figure 1, which mainly comprises an electric ignition head 1, a lead pipe 2, a delay powder 3, a small ignition hole 4, an initiating explosive 5, a reinforcing cap 6, an auxiliary charge 7, a main charge 8, a detonator shell 9, a plastic seal head 10 and a leg wire 11, wherein the primary explosive 5 is the core explosive in the existing industrial detonator, and is generally the primary explosive (such as DDNP) which has higher sensitivity to collision and friction and can explode when meeting fire, the delay time of the industrial delay element electric detonator is that an electric ignition head is electrified to ignite, ignition flame ignites delay powder 3 of an inner core of a lead tube 2, the length of the delay powder 3 can control the combustion propagation time, the delay powder 3 burns from left to right, a small hole in the center of a reinforcing cap is used for igniting primary explosive 5 after the right end is ignited, and the ignited primary explosive 5 excites an auxiliary explosive 7 and a main explosive 8 to form detonation output through combustion to detonation; the electric detonator of the type is an integrated delay element formed by a lead tube 2 and a delay powder 3, and the electric detonator is controlled to generate electric ignition, delay the delay element and ignite an explosive 5 to form combustion-to-detonation excitation auxiliary charge 7 and main charge 8 to form detonation output by mainly filling low-burning-speed gunpowder and the length of the lead tube into an inner core of the lead tube; the delay time precision of the delay element of the industrial electric detonator with the built-in delay element is poor, and the delay element electric detonator filled with low-burning-rate gunpowder is provided with initiating explosive which has high impact friction sensitivity and can explode when meeting fire in a charging structure, so that the safety of the industrial electric detonator is very low.
Except the existing industrial delay element electric detonator, the digital electronic detonator can realize the detonation delay function, but the circuit system of the digital electronic detonator is required to be provided with an MCU (microprogrammed control Unit), and the counter program design is carried out through a processor to accurately control the delay, so that the electronic detonator of the type is higher in manufacturing cost and difficult to operate, the basic detonator of the type is also initiating explosive ignited through an electric ignition head, and then the auxiliary explosive and the main explosive are excited through combustion to detonation to form detonation output, the detonator charging structure is also filled with initiating explosive which is higher in impact friction sensitivity and detonated when meeting fire, and the safety is also lower.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the hardware structure of the electric detonator based on the plasma igniter excited by the analog circuit delay element is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the electric detonator based on the plasma igniter excited by the analog circuit delay element comprises a front detonator shell and a rear detonator shell, wherein the front detonator shell and the rear detonator shell are connected into a whole to form a unified metal electric detonator, the diameter of the detonator shell of the front detonator shell is larger than that of the detonator shell of the rear detonator shell, a pressed sealing clamping waist is arranged between the front detonator shell and the rear detonator shell, and a pressed sealing clamping opening is arranged at the port part of the front detonator shell;
a zero energy storage capacitor and a delay control module are arranged in the front detonator shell, the output end of the delay control module is connected with the zero energy storage capacitor, and the input end of the delay control module is connected with a three-wire detonator pin wire;
the plasma detonator is characterized in that a plasma igniter and a detonator charge are arranged in the rear detonator shell, a plastic sealing plug is further arranged at the inlet of the rear detonator shell, an electrode of the plasma igniter is connected with one end of an ignition lead, the other end of the ignition lead penetrates through the plastic sealing plug and then is connected with the output end of the delay control module, and the ignition end of the plasma igniter is in contact with the detonator charge.
The detonator charging is specifically of a multi-layer charge structure, and each layer of charge comprises RDX excitation charge, passivated RDX auxiliary charge and passivated RDX main charge from outside to inside in sequence; the RDX propellant powder is in contact with the ignition end of the plasma igniter.
The delay control module is an analog circuit formed by connecting a plurality of components, and the delay control module internally comprises a diode bridge DZ, a silicon controlled rectifier SCR, a voltage regulator tube W1, an MOS tube NM, a resistor R and resistors R1-R4;
the three-wire system detonator leg wire comprises a positive electrode input end UA, a negative electrode input end UB and a trigger signal input end Utr;
the circuit structure of the delay control module is as follows:
the positive input end UA is connected with a pin 1 at the positive input end of the diode bridge DZ, a pin 2 at the positive output end of the diode bridge DZ is connected with one end of a resistor R1, and the other end of the resistor R1 is connected with one end of a resistor R and the drain electrode of an MOS (metal oxide semiconductor) tube NM in parallel and then connected with the positive electrode of a zero energy storage capacitor;
the negative input end UB of the capacitor is connected with the pin 3 of the negative input end of the diode bridge DZ, the pin 4 of the negative output end of the diode bridge DZ is connected with one end of a resistor R3 and one end of a resistor R4 and then grounded, the other end of the resistor R3 is connected with the anode of a voltage regulator tube W1 and then connected with the control electrode of a Silicon Controlled Rectifier (SCR), the other end of the resistor R4 is connected with the cathode of the Silicon Controlled Rectifier (SCR) in parallel, the grid of an MOS tube NM and then connected with one end of a delay capacitor C, and the anode of the Silicon Controlled Rectifier (SCR) is connected with the other end of the resistor R;
the negative electrode of the voltage regulator tube W1 is connected with the trigger signal input end Utr after being connected with the resistor R2 in series;
the source electrode of the MOS tube NM is connected with the input end of the plasma igniter;
and the negative electrode of the zero energy storage capacitor is connected with the output end of the plasma igniter and the other end of the delay capacitor C and then grounded.
The zero energy storage capacitor is packaged by a capacitor shell, and a rubber plug is arranged at an inlet of the capacitor shell;
a cylinder capacitor Cn is arranged in the zero energy storage capacitor, an anode foil and a cathode foil are arranged on the cylinder capacitor Cn, and a high-impedance resistor Rn is arranged between the anode foil and the cathode foil and firmly welded on the cylinder capacitor Cn, so that the energy stored in the zero energy storage capacitor is zero under a normal state;
electrolytic insulating paper is further wound between the anode foil and the cathode foil of the cylindrical capacitor Cn, so that the electric quantity stored by the cylindrical capacitor Cn can be released through the high impedance resistor Rn, and the discharge time constant of Cn + Rn is more than 50 seconds.
The plasma igniter is manufactured by adopting a printed circuit board process, a pair of conductive copper foils are arranged on two sides of the plasma igniter in parallel, and a positive electrode bonding pad A1 and a negative electrode bonding pad B1 are respectively arranged on the pair of conductive copper foils;
a pair of bulges, namely a bulge c and a bulge d, are oppositely arranged between the pair of conductive copper foils, a copper foil bridge line E is also arranged between the bulge c and the bulge d, and the resistance value of the copper foil bridge line E approaches to zero;
the positive electrode pad A1 is connected with the input end of the plasma igniter, and the negative electrode pad B1 is connected with the output end of the plasma igniter.
The utility model discloses beneficial effect for prior art possesses does: the utility model provides an analog circuit delay body adopts RC delay circuit control high-voltage switch pipe, makes the electric quantity that the high-voltage capacitor stores discharge on the plasma igniter instantaneously, forms high pressure, high temperature, high-speed plasma shock wave, has improved the delay body structure of the low burning rate gunpowder in the current delay body electric detonator charge structure; the utility model discloses a resistance capacitance RC circuit carries out the time delay among the simulation electronic circuit, and discharge in plasma ignition through time delay control high pressure energy storage electric capacity, plasma ignition discharges and produces the high pressure, high temperature, high-speed plasma shock wave is used in the direct detonation wave that changes of initiating explosive (plasma shock wave changes the detonation), and arouse vice powder charge through the detonation wave, main powder charge forms detonation output, the mode that the initiating explosive igniteed and detonated (burning changes the detonation) has been cancelled, make simulation circuit delay body plasma ignition electric detonator in production, the storage, the transportation, the process of use can be safer.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic structural diagram of a conventional industrial delay element electric detonator;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic circuit diagram of a delay control module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a delay control module according to a second embodiment of the present invention;
in the figure: 60a is a front detonator shell, 60b is a rear detonator shell, 10 is a zero energy storage capacitor, 20 is a time delay control module, 30 is a plasma igniter, 40 is an ignition lead, 50 is a plastic sealing plug, 70 is a three-wire detonator leg wire, 80 is a sealing clamping waist, 90 is detonator charging and 100 is a sealing clamping opening.
Detailed Description
As shown in fig. 2, the utility model relates to an electric detonator based on simulation circuit delay body excitation plasma igniter, including preceding detonator shell 60a and back detonator shell 60b, preceding detonator shell 60a and back detonator shell 60b connect as an organic wholely, form unified metal electric detonator, the shell diameter of preceding detonator shell 60a is greater than the shell diameter of back detonator shell 60b, be provided with the sealed waist of suppression 80 between preceding detonator shell 60a and the back detonator shell 60b, preceding detonator shell 60a port portion is provided with the sealed bayonet 100 of suppression;
a zero energy storage capacitor 10 and a delay control module 20 are arranged in the front detonator shell 60a, the output end of the delay control module 20 is connected with the zero energy storage capacitor 10, and the input end of the delay control module 20 is connected with a three-wire detonator leg wire 70;
the plasma igniter 30 and the detonator charging 90 are arranged in the rear detonator shell 60b, a plastic sealing plug 50 is further arranged at the inlet of the rear detonator shell 60b, the electrode of the plasma igniter 30 is connected with one end of an ignition lead wire 40, the other end of the ignition lead wire 40 is connected with the output end of the delay control module 20 after penetrating through the plastic sealing plug 50, and the ignition end of the plasma igniter 30 is in contact with the detonator charging 90.
The detonator charge 90 is specifically of a multi-layer charge structure, and each layer of charge comprises RDX excitation charge, passivated RDX auxiliary charge and passivated RDX main charge from outside to inside in sequence; the RDX propellant contacts the firing end of the plasma igniter 30.
The delay control module 20 is specifically an analog circuit formed by connecting a plurality of components, and the delay control module 20 internally comprises a diode bridge DZ, a Silicon Controlled Rectifier (SCR), a voltage regulator tube W1, a Metal Oxide Semiconductor (MOS) tube NM, a resistor R and resistors R1-R4;
the three-wire system detonator leg wire 70 comprises a positive input end UA, a negative input end UB and a trigger signal input end Utr;
the circuit structure of the delay control module 20 is as follows:
the positive input end UA is connected with a pin 1 at the positive input end of the diode bridge DZ, a pin 2 at the positive output end of the diode bridge DZ is connected with one end of a resistor R1, and the other end of the resistor R1 is connected with one end of a resistor R and the drain electrode of an MOS (metal oxide semiconductor) tube NM in parallel and then connected with the positive electrode of a zero energy storage capacitor 10;
the negative input end UB of the capacitor is connected with the pin 3 of the negative input end of the diode bridge DZ, the pin 4 of the negative output end of the diode bridge DZ is connected with one end of a resistor R3 and one end of a resistor R4 and then grounded, the other end of the resistor R3 is connected with the anode of a voltage regulator tube W1 and then connected with the control electrode of a Silicon Controlled Rectifier (SCR), the other end of the resistor R4 is connected with the cathode of the Silicon Controlled Rectifier (SCR) in parallel, the grid of an MOS tube NM and then connected with one end of a delay capacitor C, and the anode of the Silicon Controlled Rectifier (SCR) is connected with the other end of the resistor R;
the negative electrode of the voltage regulator tube W1 is connected with the trigger signal input end Utr after being connected with the resistor R2 in series;
the source of the MOS transistor NM is connected to the input end of the plasma igniter 30;
the negative electrode of the zero energy storage capacitor 10 is connected with the output end of the plasma igniter 30 and the other end of the delay capacitor C and then grounded.
The zero energy storage capacitor 10 is specifically packaged by a capacitor shell, and a rubber plug is arranged at an inlet of the capacitor shell;
a cylinder capacitor Cn is arranged in the zero energy storage capacitor 10, an anode foil and a cathode foil are arranged on the cylinder capacitor Cn, and a high-impedance resistor Rn is arranged between the anode foil and the cathode foil and firmly welded on the cylinder capacitor Cn, so that the energy stored in the zero energy storage capacitor 10 is zero under a normal state;
electrolytic insulating paper is further wound between the anode foil and the cathode foil of the cylindrical capacitor Cn, so that the electric quantity stored by the cylindrical capacitor Cn can be released through the high impedance resistor Rn, and the discharge time constant of Cn + Rn is more than 50 seconds.
The plasma igniter 30 is manufactured by adopting a printed circuit board process, a pair of conductive copper foils are arranged on two sides of the plasma igniter 30 in parallel, and a positive electrode bonding pad A1 and a negative electrode bonding pad B1 are respectively arranged on the pair of conductive copper foils;
a pair of bulges, namely a bulge c and a bulge d, are oppositely arranged between the pair of conductive copper foils, a copper foil bridge line E is also arranged between the bulge c and the bulge d, and the resistance value of the copper foil bridge line E approaches to zero;
the positive pad a1 is connected to the input of the plasma igniter 30, and the negative pad B1 is connected to the output of the plasma igniter 30.
The utility model discloses a set up the delay body of analog circuit outside the plasma igniter of electric detonator, through the delay control of the delay body of analog circuit, make high-pressure energy storage electric capacity discharge in the plasma igniter, the plasma igniter discharges and produces high pressure, high temperature, high-speed plasma shock wave effect and directly changes the detonation wave at the initiating explosive to arouse vice powder charge, main powder charge through the detonation wave and form detonation output; the utility model provides an analog circuit delay element plasma igniter electric detonator is a safe electric detonator or initiating device without initiating explosive.
As shown in fig. 3, which is a schematic diagram of an analog circuit delay element circuit according to the first embodiment of the present invention, the circuit includes an analog circuit control module 20, a delay capacitor C, a normal zero energy storage safety high-voltage capacitor Cg and a plasma igniter DHJ; the analog circuit 20 comprises a diode bridge DZ, a silicon controlled rectifier SCR, a voltage regulator tube W1, a MOSFET switch tube NM, a resistor R and resistors R1-R4; the delay capacitor C and the resistor R form an RC delay circuit; the normal zero energy storage safety high-voltage capacitor Cg is formed by installing a high-voltage capacitor Cn between an inner positive electrode and an inner negative electrode and firmly welding a high-impedance resistor Rn, so that the energy storage of the high-voltage capacitor Cn is zero in a normal state.
The operation principle of the analog circuit delay element circuit of the first embodiment is as follows: the detonator leg wire externally connected with the circuit is a three-wire system, wherein a UA wiring terminal and a UB wiring terminal are high-voltage power supply access ends, the direct-current voltage accessed between the UA and the UB is more than or equal to 100V, and the polarities of the voltages accessed between the UA and the UB can be freely and correspondingly connected with each other; direct current voltage is connected between the UA and the UB and passes through a diode bridge DZ, a normal zero energy storage safety high-voltage capacitor Cg is charged by a pin 2 at the anode output end of the diode bridge DZ through a resistor R1, and a circuit formed by a resistor R, a silicon controlled rectifier SCR, a resistor R4 and a resistor R3 connected with the control pole of the silicon controlled rectifier SCR to the ground at the moment is branched, so that the silicon controlled SCR is in a cut-off state; the grid electrode of the MOSFET switching tube NM is grounded through a resistor R4, so that the MOSFET switching tube NM is in a cut-off state;
when Utr in the detonator leg wire three-wire system has trigger voltage as the positive pole, the input voltage is transmitted to the controlled silicon SCR through the resistor R2 and the voltage regulator tube W1, when the input voltage exceeds the critical value of the voltage regulator tube W1, the controlled silicon SCR control pole is triggered to conduct the controlled silicon SCR, at the moment, the resistor R and the resistor R4 are connected in series to divide the voltage to charge the delay capacitor C, and the calculation formula of the delay time is as follows:
t=RC*ln((U-V)/U)；
in the formula, U is the voltage between the series resistor R + R4 and the delay capacitor C, V is the voltage to be reached by capacitor charging, the voltage is also the control voltage for triggering the conduction of the MOSFET switch tube NM, and ln is the natural logarithm;
when the charge of the time-delay capacitor C reaches the voltage of a control electrode conducted by the MOSFET switch tube NM, the electric energy charged on line by the normal-state zero-energy-storage safety high-voltage capacitor Cg is discharged to the plasma igniter through the conduction of the MOSFET switch tube NM to form high-voltage, high-temperature and high-speed plasma shock waves; the plasma igniter DHJ is made of a printed circuit board, wherein an A1 bonding pad is connected with an S pole (NMS) of an MOSFET switching tube NM, a B1 bonding pad is connected with a negative pole of a normal zero energy storage safety high-voltage capacitor Cg, and a positive pole of the normal zero energy storage safety high-voltage capacitor Cg is connected with a D pole (NMD) of the MOSFET switching tube NM; there is a copper bridge foil E on the order of one micron between the plasma igniter a1 pad and the B1 pad.
Fig. 4 is a schematic diagram of an analog circuit delay element circuit according to the second embodiment of the present invention, which is different from the first embodiment in that a diode bridge is replaced by two diodes, UA in a detonator leg wire three-wire system of the circuit is connected to the positive electrode of the high voltage dc power supply, UB is connected to the negative electrode of the high voltage dc power supply, and the operating principle of the analog delay circuit is the same as that of the first embodiment.
About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.
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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides an electric detonator based on simulation circuit delay element arouses plasma igniter, includes preceding detonator shell (60 a) and back detonator shell (60 b), preceding detonator shell (60 a) and back detonator shell (60 b) are connected as an organic wholely, form unified metal electric detonator which characterized in that: the diameter of the shell of the front detonator shell (60 a) is larger than that of the shell of the rear detonator shell (60 b), a pressed sealing clamping waist (80) is arranged between the front detonator shell (60 a) and the rear detonator shell (60 b), and a pressed sealing bayonet (100) is arranged at the port part of the front detonator shell (60 a);
a zero energy storage capacitor (10) and a delay control module (20) are arranged in the front detonator shell (60 a), the output end of the delay control module (20) is connected with the zero energy storage capacitor (10), and the input end of the delay control module (20) is connected with a three-wire detonator pin wire (70);
the plasma detonator is characterized in that a plasma igniter (30) and a detonator charging (90) are arranged in the rear detonator shell (60 b), a plastic sealing plug (50) is further arranged at the inlet of the rear detonator shell (60 b), the electrode of the plasma igniter (30) is connected with one end of an ignition lead (40), the other end of the ignition lead (40) penetrates through the plastic sealing plug (50) and then is connected with the output end of the delay control module (20), and the ignition end of the plasma igniter (30) is in contact with the detonator charging (90).
2. The electric detonator of claim 1, wherein the electric detonator comprises an analog circuit delay element-based plasma igniter, and is characterized in that: the detonator charging (90) is of a multilayer medicine structure, and each layer of medicine is sequentially provided with RDX exciting medicine, passivated RDX auxiliary charging and passivated RDX main charging from outside to inside; the RDX propellant is in contact with the ignition end of the plasma igniter (30).
3. The electric detonator of claim 2, wherein the electric detonator comprises an analog circuit delay element-based plasma igniter, and is characterized in that: the delay control module (20) is specifically an analog circuit formed by connecting a plurality of components, and the delay control module (20) internally comprises a diode bridge DZ, a silicon controlled rectifier SCR, a voltage regulator tube W1, an MOS tube NM, a resistor R and resistors R1-R4;
the three-wire system detonator leg wire (70) comprises a positive electrode input end UA, a negative electrode input end UB and a trigger signal input end Utr;
the circuit structure of the delay control module (20) is as follows:
the positive input end UA is connected with a pin 1 at the positive input end of the diode bridge DZ, a pin 2 at the positive output end of the diode bridge DZ is connected with one end of a resistor R1, and the other end of the resistor R1 is connected with one end of a resistor R and the drain electrode of an MOS (metal oxide semiconductor) tube NM in parallel and then connected with the positive electrode of a zero energy storage capacitor (10);
the negative input end UB is connected with a pin 3 of a negative input end of a diode bridge DZ, a pin 4 of a negative output end of the diode bridge DZ is connected with one end of a resistor R3 and one end of a resistor R4 and then grounded, the other end of the resistor R3 is connected with the anode of a voltage regulator tube W1 and then connected with the control electrode of a Silicon Controlled Rectifier (SCR), the other end of the resistor R4 is connected with the cathode of the Silicon Controlled Rectifier (SCR) in parallel, the gate of an MOS tube NM and then connected with one end of a delay capacitor C, and the anode of the Silicon Controlled Rectifier (SCR) is connected with the other end of the resistor R;
the negative electrode of the voltage regulator tube W1 is connected with the trigger signal input end Utr after being connected with the resistor R2 in series;
the source electrode of the MOS tube NM is connected with the input end of a plasma igniter (30);
the negative electrode of the zero energy storage capacitor (10) is connected with the output end of the plasma igniter (30) and the other end of the delay capacitor C and then grounded.
4. The electric detonator of claim 3, wherein the electric detonator comprises an analog circuit delay element-based plasma igniter, and is characterized in that: the zero energy storage capacitor (10) is packaged by a capacitor shell, and a rubber plug is arranged at an inlet of the capacitor shell;
a cylinder capacitor Cn is arranged in the zero energy storage capacitor (10), an anode foil and a cathode foil are arranged on the cylinder capacitor Cn, and a high-impedance resistor Rn is arranged between the anode foil and the cathode foil and firmly welded on the cylinder capacitor Cn, so that the zero energy storage capacitor (10) stores energy to be zero under a normal state;
electrolytic insulating paper is further wound between the anode foil and the cathode foil of the cylindrical capacitor Cn, so that the electric quantity stored by the cylindrical capacitor Cn can be released through the high impedance resistor Rn, and the discharge time constant of Cn + Rn is more than 50 seconds.
5. The electric detonator of claim 4, wherein the electric detonator comprises an analog circuit delay element-based plasma igniter, and is characterized in that: the plasma igniter (30) is manufactured by adopting a printed circuit board process, a pair of conductive copper foils is arranged on two sides of the plasma igniter (30) in parallel, and a positive electrode bonding pad A1 and a negative electrode bonding pad B1 are respectively arranged on the pair of conductive copper foils;
a pair of bulges, namely a bulge c and a bulge d, are oppositely arranged between the pair of conductive copper foils, a copper foil bridge line E is also arranged between the bulge c and the bulge d, and the resistance value of the copper foil bridge line E approaches to zero;
the positive electrode pad A1 is connected with the input end of the plasma igniter (30), and the negative electrode pad B1 is connected with the output end of the plasma igniter (30).
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| CN112361904A (en) * | 2020-12-11 | 2021-02-12 | 郭建国 | Electric detonator for exciting plasma igniter based on analog circuit delay element |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361904A (en) * | 2020-12-11 | 2021-02-12 | 郭建国 | Electric detonator for exciting plasma igniter based on analog circuit delay element |
| CN112361904B (en) * | 2020-12-11 | 2024-09-24 | 郭建国 | Electric detonator based on analog circuit delay body excitation plasma igniter |
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