CN2150521Y

CN2150521Y - Constant-current ignitor

Info

Publication number: CN2150521Y
Application number: CN 93227422
Authority: CN
Inventors: 冯洪仁; 崔跃专; 史锦生
Original assignee: NANPIAO MINING ADMINISTRATION
Current assignee: NANPIAO MINING ADMINISTRATION
Priority date: 1993-02-24
Filing date: 1993-02-24
Publication date: 1993-12-22
Anticipated expiration: 2003-02-24

Abstract

The utility model provides a safe constant-current detonator. A power end is connected with a detonation-loop load-voltage testing circuit through a millisecond switch, and a detonation circuit is connected with a charging voltage sample circuit. The signal output by the testing circuit and the detonation circuit can be conveyed to a luminous display circuit and the micro-vibration control circuit of the detonation circuit after the signal passes through a voltage comparator, and a constant-current detonation control circuit can be formed. The power end also educes a detonation-loop load-resistance sample circuit and a reference bleeder circuit through the millisecond switch. The signal output by the sample circuit and the reference bleeder circuit can be conveyed to the luminous display circuit and the vibration-stop control circuit of the detonation loop after the signal passes through the comparator, and the timely testing circuit of the detonation loop state can be formed.

Description

Constant-current ignitor

The utility model belongs to a kind of apparatus to cause bursting, particularly a kind of constant current mode exploder.

In coal production process, big gun is adopted, big gun pick mine generally uses capacitor blasting machine.Yet the various exploders that use all adopt the constant voltage way of output at present, and no matter how load changes, and output voltage remains on design load substantially.Therefore, when sealing in the electric cap negligible amounts, it is very big to ignite output current, too much rich energy is the serious hidden danger that causes gas explosion, also greatly waste simultaneously the finite energy of battery in the exploder, caused the replacing battery frequent, reduced the explosion-proof performance of shell.In addition, charging earlier, after touch the problem that big gun is blown out, be the domestic one of the main reasons that great serious accident takes place for many years, also be the insurmountable technical barrier of common exploder.Multiple products such as no miso-fire exploder, network lock up formula exploder and gas shutting formula exploder have appearred in recent years in succession, but adopt constant pressure type output bar none, and some product cost is higher, and some product does not tackle the problem at its root.

The purpose of this utility model is to provide a kind of constant current to ignite and can detects the safe and reliable constant current mode exploder of igniting loop state constantly.

The utility model is achieved in that it has a detonation circuit; be connected to resistance at power end by ms switch; current regulator diode; constitute and ignite the loop load voltage detecting circuit; the storage capacitor two ends are connected to the charging voltage sample circuit in detonation circuit; after voltage signal through igniting the output of loop load voltage detecting circuit and charging voltage sample circuit passes through a voltage comparator; the little control circuit that shakes of detonation circuit of delivering to luminous display circuit and constituting by switching tube and relay; foregoing circuit constitutes constant current and ignites control circuit; when charging voltage reaches load voltage; the little control circuit that shakes of detonation circuit makes detonation circuit be in little state that shakes; and luminous demonstration can be blown out; also draw be used to take a sample an ignition loop load resistance sampling circuit of igniting the loop load resistance value and a bleeder circuit that is used to provide reference voltage at power end by ms switch; after the voltage signal of above-mentioned sample circuit and bleeder circuit output passes through another comparator; deliver to another luminous display circuit again and by the ignition loop failure of oscillation control circuit that constitutes by another switching tube and relay; foregoing circuit constitutes ignites loop state testing circuit constantly; when igniting loop open circuit or load resistance value above setting; making the detonation circuit failure of oscillation and release can; carry out latch-up protection, and luminous demonstration.

This exploder has constant current to be ignited electric cap, detects characteristics such as igniting the loop constantly, makes output ignition energy substantially constant, avoids the excessive gas that ignites that releases energy, and can prevent violating the regulations blowing out, to guarantee the safety of coal production.

Below in conjunction with drawings and Examples the utility model is elaborated:

Fig. 1 is circuit theory diagrams of the present utility model:

As shown in Figure 1, the utility model has one by transformer B, triode T3, resistance R 7, the oscillator that R8 constitutes, the oscillator signal that above-mentioned oscillator produces is by rectifying tube D4, after the D5 rectification, to capacitor C 1, C2 charges, draw the output Z1 of this exploder again by ms switch KC, Z2, wherein resistance R 12 works to guarantee that power-on time is within 4ms, above-mentioned components and parts constitute detonation circuit, at power end E by drawing output Z1, the ms switch KC of Z2 is connected to resistance R 4, current regulator diode D2, constitute and ignite the loop load voltage detecting circuit, storage capacitor C1 in detonation circuit, the two ends of C2 are connected to by divider resistance R10, the charging voltage sample circuit that R11 constitutes, after the voltage signal of above-mentioned sample circuit and testing circuit output passes through comparator IC2, promptly obtain constant current and ignite control circuit, and by the luminous demonstration of luminous display circuit that constitutes by resistance R 5 and luminous tube LED2 and by switch transistor T 2 and relay J 2(diode D3) the little control circuit that shakes of detonation circuit that constitutes handles, be connected between the control end 3 of power supply E and oscillator after the normally-closed contact J2 of said relay J 2 and resistance R 6 parallel connections, be used for control generator, make it when charging voltage equals load voltage, be in little state that shakes.At power supply E with draw output Z1; be connected with by resistance R 1 between the ms switch KC of Z2; the bleeder circuit that R2 constitutes; IC1 provides reference voltage for comparator; the normal phase input end of comparator IC1 links to each other with ms switch KC; draw and ignite loop load resistance sampling circuit; be used for detecting ignition loop load resistance value; foregoing circuit constitutes ignites loop state testing circuit constantly; and pass through by resistance R 3; the luminous demonstration of luminous display circuit that luminous tube LED1 constitutes reaches by switch transistor T 1; relay J 1(diode D1) the detonation circuit failure of oscillation control circuit that constitutes is handled; the normally-closed contact J11 of said relay J 1 is connected on another control end 4 of oscillator; be used for control generator; make it at load circuit open circuit or resistance value failure of oscillation during greater than setting; normally opened contact J12 be connected on storage capacitor C1 after resistance R 9 is connected; between the C2; be used to discharge capacitor C 1; the electric energy of C2 plays the latch-up protection effect.

The utility model shell is the square box formula, is to form top by the hot pressing of high strength phenolic aldehyde glass fiber to leave handle hole and show the hole.

When reality is used, at output Z1, after the Z2 end seals in electric cap, make ms switch KC fill inspection position set, inverting input at comparator IC2 provides one and the directly proportional reference voltage of electric cap equivalent resistance, at this moment, oscillating circuit makes capacitor C1, the terminal voltage of C2 increases, through resistance R 10, behind the charging voltage sample circuit that R11 constitutes, be input to the normal phase input end of comparator IC2, when charging voltage reached the load required voltage, comparator IC2 exported high level, the luminous demonstration of luminous tube LED2, can blow out, relay J 2 adhesives seal in resistance R 6 simultaneously, make oscillating circuit enter little state that shakes, keep capacitor C1, the voltage of C2 is constant, if K switch C is removed to " 2 " position, promptly blows out.

At any time; surpass 620 if ignite loop open circuit or load resistance; comparator IC1 normal phase input end voltage equal negative phase end, comparator IC1 exports high level, the luminous demonstration of luminous tube LED1; relay J 1 adhesive simultaneously; normally-closed contact J11 disconnects, and makes the oscillating circuit failure of oscillation, contact J12 closure; electric energy on capacitor C1, the C2 is discharged, play the effect of latch-up protection.

Claims

1, a kind of apparatus to cause bursting, particularly a kind of constant current mode exploder comprises a detonation circuit, it is characterized in that, is connected to resistance (R at power end (E) by ms switch (KC) ₄), diode (D ₂), constitute and ignite loop load voltage detecting circuit, storage capacitor (C in described detonation circuit ₁, C ₂) two ends be connected to by resistance (R ₁₀, R ₁₁) the charging voltage sample circuit that constitutes, through the voltage signal of load voltage testing circuit and the output of charging voltage sample circuit by voltage comparator (IC ₂) after, deliver to again by resistance (R ₅) and luminous tube (LED ₂) luminous display circuit that constitutes and by switching tube (T ₂) and relay (J ₂) the little control circuit that shakes of detonation circuit that constitutes, foregoing circuit constitutes constant current and ignites control circuit, when charging voltage reaches load voltage, the little control circuit that shakes of detonation circuit makes detonation circuit be in little state that shakes, and can blow out by the luminous demonstration of luminous display circuit, also draw one at power end (E) by ms switch (KC) and be used to take a sample and ignite the ignition loop load resistance sampling circuit of loop load resistance value and by resistance (R ₁, R ₂) bleeder circuit that is used to provide reference voltage that constitutes, through the voltage signal of above-mentioned sample circuit and bleeder circuit output by another comparator (IC ₁) after, deliver to again by resistance (R ₃) and luminous tube (LED ₁) luminous display circuit that constitutes and by switching tube (T ₁) and relay (J ₁) the ignition loop failure of oscillation control circuit that constitutes, foregoing circuit constitutes ignites loop state testing circuit constantly, when igniting loop open circuit or load resistance value when surpassing setting, make the detonation circuit failure of oscillation and release can, carry out latch-up protection, and luminous demonstration.

2, constant current mode exploder according to claim 1, it is characterized in that, the normally-closed contact of described relay (J2) be connected between the control end (3) of oscillator in power supply (E) and the detonation circuit after resistance (R6) is in parallel, be used for control generator, make it be in little state that shakes.

3, constant current mode exploder according to claim 1, it is characterized in that, the normally-closed contact (J11) of described relay (J1) is connected on another control end (4) of oscillator in the detonation circuit, be used for control and make its failure of oscillation, normally opened contact (J12) be connected on storage capacitor (C1, C2) two ends after resistance (R9) is connected so that storage capacitor (C1, C2) is released energy.