RU2470256C1 - Diagram of controlled detonation logic chain - Google Patents

Abstract

FIELD: blasting operations.

SUBSTANCE: invention refers to blasting operations, and namely to detonation systems intended for controlled detonation distribution from one or more initiating agents and initiation of several explosive charges or several places of one charge. It can be used in several spheres of blasting engineering to reduce the hazard of preparation of different explosive charges or devices containing them for explosion. The diagram of the controlled detonation logic chain consisting of the main channels on the basis of at least one AND logic element having at least two inputs and one output brought into action at least with one initiating agent connected to inputs of AND logic element also includes one controlled channel branching as per the number of AND logic elements. The controlled channel connects two points of one of the main chain channels led to each AND logic element so that its length is less than length of section of the main channel between those points.

EFFECT: improving reliability, shortening the time required for detonation transfer, improving the accuracy of calculation of detonation logic chain operating time owing to maintaining the integrity of the main chain channels.

4 dwg

Description

The invention relates to the field of blasting, in particular to detonating systems intended for the controlled distribution of detonation from one or more initiators and the initiation of several explosive charges or several places of a single charge. It can be used in various fields of explosive technology to reduce the danger of preparing for the explosion of various explosive charges (explosives) or devices with them.

There is a method of initiating the main explosive charge from an electric detonator (ED), in which the detonation circuit between the ED and the explosive charge is switched by a special safety-actuating mechanism (RF patent No. 2161293; IPC F42C 11/06, published in bulletin No. 36 dated 12/27/2000 g.).

The disadvantage of this method is the complexity of the safety-actuating mechanisms for switching the detonation circuit, with a single-point detonation of the explosive charge.

A known method of initiating and generating a blast wave in the main explosive charge (RF patent No. 2296943; IPC F42B 3/10, published in Bulletin No. 10 of 04/10/2007) using detonation channels and explosive logic circuits (VLC), made according to scheme I. In this case, detonation pulses are passed through a control element or a switch. Such a detonation logic circuit (DLC) is taken as a prototype.

The disadvantage of the design of the prototype is that the presence of the switch in the main detonation channels of the circuit reduces the reliability of the transmission of detonation, increases the transmission time of knock due to the presence of joints in the channels, complicates the calculation of the operating time of the DLC.

The objective of the invention is to develop a control circuit DLT without the introduction of switching devices directly into the main channels.

The technical result achieved by using this scheme is expressed in increasing reliability, reducing knock transmission time, and increasing the accuracy of calculating the operating time of the DLC by maintaining the integrity (continuity) of the main channels of the circuit by introducing an additional controlled channel.

The technical result is achieved by the fact that in the proposed circuit controlled detonation logic circuit of the main channels based on at least one logical element And, having at least two inputs and one output, driven by at least one initiator connected to the inputs of the logical element AND additionally contain one branching channel according to the number of logical elements AND controlled channel connecting two points of one of the main channels of the circuit, suitable for each logical element And, that them that the length of the channel managed less basic channel section length between these points.

This allows, on the one hand, to ensure a safe initial state of the DLC, which in the event of unauthorized initiation by a initiator sensitive to external accidental (bullet-fragmentation) or erroneous actions, destroys itself without transmitting detonation to the main explosive charge, and, on the other hand, eliminates the influence of a commuting devices for the process and reliability of the DLC after disconnecting (physically breaking) the detonation circuit in the controlled channel and to increase the reliability of the DLC due to simplification of the design of the commutator ator, since its task is not to restore the operability of one of the main channels of the DLC, but to disable (destroy) an additional controlled channel. Thus, the reliability of knock transmission along the main branches of the DLC and the reliability of the DLC as a whole are significantly increased. Since in case of unauthorized initiation of a DLC in the initial state, the managed channel actually destroys the DLC, it is a controlled failure channel (UKS).

Thus, the considered technical solution allows to achieve a new technical result.

The claimed technical solution is schematically illustrated in FIGS. 1 and 2, which show the simplest versions of DLC circuits designed to initiate one explosive charge point from one and two initiators (detonators), where 1, 2 are detonators; 3, 4, 14 - detonation channels; 5, 6 - inputs of logical elements AND; 9 - a logical element And; 11 - the output of the logical element And; 13 - controlled channel.

In the first case, the detonator 1 is connected by equal length or other detonation channels 3 and 4 with the inputs 5 and 6 of the logic element And 9 having a detonation output 11 for initiating an explosive charge. In parallel with one of the main detonation channels of the DLC, in this case, channel 3, an additional detonation channel 14, controlled by switch 13, is connected, having a shorter length. A DLC with such a circuit with an input instead of a detonator can be used as a switch in any detonation channels and circuits. In the initial state, such a DLC plays the role of not a physical, but a functional breaking of the circuit. In the second case, the detonators 1 and 2 are connected by equal length or other detonation channels 3 and 4 with the inputs 5 and 6 of the logical element And 9, having a detonation output 11 to initiate the explosive charge. The use of two detonators in the second case may be due to the need to ensure the safety of the DLC when there is a threat of emergency or other abnormal initiation of one of the detonators after the switch is triggered.

The device operates as follows.

Detonators 1 and 2 (Fig. 2) simultaneously or in a predetermined sequence initiate detonation in channels 3 and 4 of equal or different length in order to simultaneously or in a predetermined sequence initiate inputs 5 and 6 of AND 9 and transmit detonation to output 11 if rupture in the additional controlled detonation channel 14. The rupture of the additional channel (UKVS) is carried out by the switch 13 by a preliminary command (signal). In the absence of a control command and corresponding rupture of an additional channel, the outstripping propagation of detonation along this channel will lead to the initiation of inputs of the logical element And and its failure (failure to work) at a different or different order of sequence, the explosion of the explosive charge will not occur.

If it is necessary to initiate more points on the explosive charge or more explosive charges with the help of the DLC, built on the basis of the proposed simplest schemes with preserving a single gap between the UHF and the commutator, as well as with the aim of eliminating the regular explosion of the charge of the insensitive explosive under the emergency action of an intense shock wave capable of initiating the explosive detonation channels of the DLC, the DLC circuit can be performed with the configurations shown in Figs. 3, 4, including in non-planar design for the number of -OPERATION AND gates more than two.

Figure 3 shows a diagram of the DLC initiating detonation with two outputs from one detonator, where 1 is the detonator; 5, 6, 7, 8 - inputs of logical elements AND; 9, 10 - logical elements And; 11, 12 - outputs of logical elements AND; 13 - controlled channel; 14 - detonation channel. Management (inclusion) DLC is made by one switch 13.

Figure 4 shows a diagram of the DLC initiating detonation with two outputs from two detonators, where 1, 2 are detonators; 3, 4, 14 — detonation channel; 5, 6, 7, 8 - inputs of logical elements AND; 9, 10 - logical elements And; 11, 12 - outputs of logical elements AND; 13 - controlled channel. Management (inclusion) DLC is made by one switch 13.

Thus, the controlled detonation logic circuit of the proposed schemes works.

Claims (1)

Scheme of a controlled detonation logic circuit of the main channels based on at least one logical element And having at least two inputs and one output, driven by at least one initiator connected to the inputs of the logical element And, characterized the fact that the detonation logic circuit additionally contains one branching channel according to the number of logical elements AND controlled channel connecting two points of one of the main channels of the circuit, suitable for each logical element And, thus way that the controlled channel length is less than the length of the main channel portion between these points.

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