RU2499976C2 - High-accuracy relay for delay of explosive processes - Google Patents

Abstract

FIELD: blasting operations.

SUBSTANCE: high-accuracy relay for delay of explosive processes in delay-action blasting consists of a cover with a hatch, with a shock-action sensor arranged in the cover and galvanically connected to a power supply source of an electronic delay assembly having a waveguide holder-nut. The power supply source forms a current starting pulse of instantaneous electric detonators through the electronic delay assembly.

EFFECT: improving blasting time delay accuracy.

3 cl, 1 dwg

Description

The invention relates to systems for increased accuracy of blasting and can be used as part of non-electric and electric blasting systems, initiation systems based on shock wave tubes (blast tubes), blasting wires, etc., when initiating blasting systems for blasting in the mining industry , military affairs, rescue services, etc.

An example of safe devices for generating time delays during initiation is the patent for the invention RU 2431110, 04/30/2008, in which a pyrotechnic relay of improved accuracy for tripping is proposed, however, creation of accurate deceleration intervals is possible only when using electronic detonators with electronic deceleration (US Pat. No. 6173651 from 2001, Russia No. 2349867, 2147365, 2211435, etc.) in which the required deceleration time is programmed before the explosion, and the accuracy of the time intervals is ~ 1 ms, in the range from 0 to 20 s. Also known device according to US patent No. 6814005 B1 from 09/09/2004, containing galvanic cells as a power source of the delay and initiation unit.

Closest to the proposed device is a non-electric detonator for digital delay of the non-electric blasting system and the method of its application according to patent for invention DE No. 4427296 / 0A1 of 08/08/1996, containing a housing in which are located: explosive charge, conversion register, secondary element ignition, electronic circuit programmable blast delay programmed in the manufacture or at the place of blasting for a fixed deceleration time, power source and UHT.

The purpose of the claimed design and technological solution is to create a cheap, reliable, hermetic, safe, programmable digital delay relay, switched on by an initiating UHT pulse, the output signal of which turns on the initiating current triggering circuit for "n" detonators, where "n" is determined by the current generated pulse discharge.

The claimed design and technological solution differs from the previous ones in the design of the relay, which does not use a flammable composition, and the pulse from the shock wave tube includes an electric current source supplying a capacitor that generates an initiating current pulse and a digital delay relay.

The technical result of the claimed invention is the creation of a safe design of a device for switching and initiating an electric moderator, ensuring the initiation of "n" detonators, where "n" is determined by the guaranteed value of the current pulse generated in the explosive circuit.

The technical result is achieved due to the constructive implementation of the switching device, triggering the digital relay, which is activated by the pulse of the waveguide, the pulse of which triggers the trigger device, which includes an explosive circuit with "n" instant detonators.

The goal of the claimed invention is solved due to the fact that the electronic relay short-blasting (relay) contains a shell in which there is an electronic circuit board programmable time delay, included through the key sensor, the power supply of the electronic node, in addition, the shell is equipped with a hatch through which, after programming, through an open key-sensor, a power source is inserted, which ensures, when triggered by the UVT of the key-sensor, supply with a fixed time delay of the current pulse to explosive chain of instant electric detonators.

The device is shown in the drawing, where 1 is the relay shell, 2 is the nut holder, 3 is the programmable delay electronic assembly, 4 is the shock wave sensor, 5 is the power source, 6 is the hatch, in the absence of which it is replaced by a plug, 7 is the waveguide , 8 - relay ready indicator, 9 - sealing sleeve, 10 - capacitive storage, to which, if necessary, an energy storage is connected, 11 - output wires, 12 - instantaneous detonators.

The device operates as follows. Before using the relay, when the hatch 6 (or plug) is open, the electronic delay unit 3 is programmed, then a segment of the waveguide 7 is fixed through the holder nut 2 using the sealing sleeve 9, immediately before detonation the module is connected, connected by galvanic coupling, through the sensor 4 , power supply 5 (galvanic cell, ionistor, etc.), which is indicated by the ready indicator 8, the hatch 6 is closed and segments of the output wires 11 are connected with instant electric detonator and 12. When initiating a start of the segment 7 waveguide sensor 4 is activated by a drive unit 10 starts a programmable delay unit 3, after which time dilation creates transmission initiation EB 12, which completes the operation of the device.

Performing an electronic relay as a separate unit allows you to secure blasting operations, storage and transportation conditions, since even with a power source it is safe. The possibility, with the cover open, of programming the deceleration time, allows for prompt introduction of adjustments to the scheme for blasting the face, block, etc. under changing mining and geological, and other conditions. Placing the power source in the relay immediately before the explosion significantly increases the reliability and safety of the system, excluding the appearance of discharged sources during long-term storage of them in non-separable relays. The short duration of operation of power sources allows the use of cheap single-use elements, and the possibility of using an ionistor, magneto-induction, piezoelectric and other current generators used in the prototypes is not excluded, significantly reducing the cost of the device. Thus, the proposed device performs all the tasks.

Industrial application consists in creating a safe system of high accuracy of initiation with a given time delay of the device and the wiring of the initiating pulse. The use of the finished device is possible in the mining industries, where UVT has long been used. A high-precision relay using "n" simultaneously triggered instantaneous electric detonator capsules allows multi-point charge initiation.

Claims (3)

1. Relay of high accuracy for delaying explosive processes in short-delayed blasting, consisting of a shell with a hatch, a shock-wave sensor placed in the shell, which is galvanically connected to a power source of the electronic delay unit, having a waveguide nut holder, characterized in that the source power supply through the electronic delay unit generates a current pulse for starting instant detonators. 2. The high accuracy relay according to claim 1, further comprising an energy storage device. 3. The relay of high accuracy according to claim 1, containing a plug completely detachable from the shell, covering the hole of the hatch.