CN2350720Y

CN2350720Y - Time delay priming device for electric detonator

Info

Publication number: CN2350720Y
Application number: CN 98210324
Authority: CN
Inventors: 杨福东; 李原森; 高毅; 薛成钦
Original assignee: STATE RUNNAN FUEL FACTORY NO 1
Current assignee: STATE RUNNAN FUEL FACTORY NO 1
Priority date: 1998-01-15
Filing date: 1998-01-15
Publication date: 1999-11-24
Anticipated expiration: 2008-01-15

Abstract

The utility model relates to a time delay priming device for an electric detonator. The utility model belongs to the field of explosion, particularly the time delay priming device for the electric detonator. The structure of the utility model is characterized in that the utility model comprises a power supply circuit which is composed of a rectification bridge, a voltage stabilizing tube, an energy storage capacitor, etc., two oscillating circuits which are connected with a not gate circuit, a crystal vibrating body and a resistor, and a time delay counting circuit which is formed by the connection of a plurality of JK or D triggers according to the second quantity requirement; a control electrode for initiating a fire head of a controllable silicon is connected with a signal output end of the time delay counting circuit. The device has the advantages of simple structure, high precision of the time delay of second amount, and no polar requirement of electrodes of the detonator, and has good property of static electricity prevention and scattered electricity prevention after electromagnetic coils are connected.

Description

The delay initiation device of electric cap

The utility model belongs to the delay initiation device in explosion field, particularly electric cap.

Present domestic delay electric detonator mainly adopts " silicon-iron " to be or " tungsten " is chemical delay agent, and the delay precision of this detonator is generally lower, only can arrive ± 20ms.Along with the development of explosion industry, various special blastings have proposed more and more higher requirement to delay precision, and this plain detonator can't meet the demands.In recent years more domestic R﹠D institutions and applicant have made big quantity research in early stage for electronic delay detonator or electromagnetism delay detonator, but circuit is once given electric initiating time delay period precision instability and the problems such as special requirement of voltage is failed to be solved preferably in explosion, therefore there is following shortcoming in product always: after must charging to circuit with extraordinary initiator, provide the triggering signal detonating capsule again; The electroplax of detonator has polar requirement; Second, the amount delay precision was low; Electromagnetic detonators is owing to indivedual not enough big guns of losing of number transient energy of sending out.

The purpose of this utility model provides a kind of delay initiation device of electric cap, it is high and stable that its second measured delay precision, easy to use, simple in structure, the detonator electrode does not have the plate requirement, need not to add triggering signal again after the charging, have antistatic preferably, stray electrical performance after the connection magnetic ring coil, do not lose the big gun phenomenon.

Implementation of the present utility model is: consist predominantly of power circuit, oscillating circuit, extension counting circuit and controllable silicon in the priming device and cause duration and degree of heating, (1) rectifier bridge is arranged in the power circuit, its output is parallel with voltage-stabiliser tube and electric capacity respectively, and be connected with diode between electric capacity and the voltage-stabiliser tube, the output of this circuit connects oscillating circuit, extension counting circuit and controllable silicon and causes duration and degree of heating as working power; (2) adopted two NAND gate circuits to link in the oscillating circuit, and connected the formation oscillation circuit with quartz crystal oscillator body and resistance, its signal output part connects the signal input part of extension counting circuit; (3) the extension counting circuit is made of JK that is coupled to each other or d type flip flop; (4) controllable silicon in the controllable silicon initiation duration and degree of heating is series in the current loop of detonator electroplax, and its control utmost point connects the output of extension counting circuit.

Below, two specific embodiments of the present utility model according to Figure of description provides are further described its structure.

Fig. 1 is the circuit diagram of the utility model electronic delay detonator priming device;

Fig. 2 is the circuit diagram of the utility model electromagnetism delay detonator priming device.

Referring to Fig. 1 and Fig. 2, this device includes power circuit 1, oscillating circuit 2, extension counting circuit 3, controllable silicon initiation duration and degree of heating 4 and testing circuit 5.One rectifier bridge D1～D2 is arranged in the power circuit 1, its output is parallel with voltage-stabiliser tube CW and capacitor C 1 respectively, and be connected with second tube sheet D5 between this capacitor C 1 and the voltage-stabiliser tube CW, in case the flow of charge voltage-stabiliser tube CW of capacitor C 1, the output of this power circuit 1 is as oscillating circuit 2, extension counting circuit 3 and controllable silicon cause the working power of duration and degree of heating 4, when as commonly used electronic delay detonator priming device, can be in the resistance R 1 of a rectifier bridge D1-D2 input 5-40 Ω in parallel, if the electromagnetism delay detonator priming device as special occasions is used then can connect a reaction magnetic ring coil B at the rectifier bridge input; Adopted two NAND gate circuit IC2 to link in the oscillating circuit 2, and with quartz crystal oscillator body HTD and resistance R 2 connection formation oscillation circuits, its signal output part connects the signal input part of extension counting circuit 3, the preferred 1.5-50kHz of the frequency of quartz crystal oscillator body HTD wherein, resistance R 2 resistances are 1.8-18M Ω; Extension counting circuit 3 is made of JK that is coupled to each other or d type flip flop IC1, and the quantity of JK or d type flip flop IC1 is by amount decision second of required time-delay; Controllable silicon causes duration and degree of heating 4 and comprises a controllable silicon SCR and detonator electrode 6, and controllable silicon SCR is series in the current loop of detonator electrode 6, and its control panel connects the output of extension counting circuit 3; The 40-200 Ω resistance R 3 that testing circuit is connected with an interpolar of detonator electrode by the utmost point at power circuit 1 rectifier bridge input, and the 40-200 Ω resistance R 4 that connects between another plate of another plate of rectifier bridge input and detonator electroplax constitutes.When resistance R 1, can constitute electronic delay detonator priming device (see figure 1) at power circuit 1 a rectifier bridge input 5-40 Ω in parallel; And, can constitute electromagnetism delay detonator priming device (see figure 2) when when power circuit 1 rectifier bridge input connects a reaction magnetic ring coil B.Can the routing capacitance C2 of going out in parallel and giving of linking of resistance R 5 replies a circuit by cable or improved on this basis other are replied by cable a circuit at the output of power circuit 1, the negative pole of its capacitor C 2 connects the reset terminal of extension counting circuit 3 the most last plate trigger IC1.

From technique scheme of the present utility model, after in power circuit, adopting rectifier bridge, can make electric cap in use be regardless of plate, easy to use, after the input parallel resistance, can make safe firing current and safe current meet request of national standard, the employing of voltage-stabiliser tube makes electric cap not too harsh to voltage request, suit under multiple situation, to use, storage capacitor can be put aside energy, and the administration head provides enough firing energies, has avoided losing because of energy shortage the phenomenon of big gun, second tube sheet can prevent the electric current playback of storage capacitor, has improved this device functional reliability; The structure of oscillating circuit and preferred to wherein crystal oscillator body and resistance parameter can obtain stable crystal oscillator body starting of oscillation parameter, realize once charging extension work, add triggering signal again after need not charging; The structure of extension counting circuit can be shifted to oscillating impulse, frequency division, puts off until required second amount back output triggering signal; The setting of testing circuit can detect the running parameter of the product that installs.After the rectifier bridge input connected the reaction magnetic ring coil, antistatic preferably, stray electrical performance that this device has can reliably be connected in a large number and be detonated.

Claims

1, a kind of delay initiation device of electric cap is characterized in that including power circuit, oscillating circuit, extension counting circuit and controllable silicon and causes duration and degree of heating, and the structure of each circuit is:

(1) rectifier bridge is arranged in the power circuit, its output is parallel with voltage-stabiliser tube and electric capacity respectively, and is connected with second tube sheet between electric capacity and the voltage-stabiliser tube, and the output of this circuit connects oscillating circuit, extension counting circuit and controllable silicon and causes duration and degree of heating as working power;

(2) adopted two NAND gate circuits to link in the oscillating circuit, and connected the formation oscillation circuit with quartz crystal oscillator body and resistance, its signal output part connects the signal input part of extension counting circuit;

(3) the extension counting circuit is made of JK that is coupled to each other or d type flip flop;

(4) controllable silicon in the controllable silicon initiation duration and degree of heating is series in the current loop of detonator electroplax, and its control panel connects the output of extension counting circuit.

2, by the delay initiation device of the described electric cap of claim 1, it is characterized in that the preferred 1.5-50kHz of frequency of crystal oscillator body in the oscillating circuit, resistance is 1.8-18M Ω; Between a plate of plate of power circuit rectifier bridge input and detonator electrode, be connected to the resistance of 40-200 Ω, also be connected to the resistance of 40-200 Ω between another plate of rectifier bridge input and another plate of detonator electroplax, constitute testing circuit; Reply a circuit by cable or other are replied by cable a circuit the output parallel connection of power circuit giving of going out that one road electric capacity and resistance links, the negative pole of its electric capacity connects the reset terminal of the most last plate trigger of extension counting circuit.

3, by the delay initiation device of the described electric cap of claim 2, it is characterized in that can a 5-40 Ω in parallel at power circuit rectifier bridge input resistance.

4, by the delay initiation device of the described electric cap of claim 2, it is characterized in that to connect a reaction magnetic ring coil at power circuit rectifier bridge input.