RU2157501C2 - Detonator-cartridge - Google Patents

Abstract

FIELD: means of industrial blasting, applicable for initiation of deep-hole charges. SUBSTANCE: the invention represents a detonator-cartridge with a seat filled in the bottom part with a high-power explosive, and an explosive fixing member preventing its displacement. EFFECT: enhanced reliability of fixing of additional explosive, which enhances no-failure operation of the detonator-cartridge. 3 cl, 4 dwg

Description

 The invention relates to the field of industrial blasting equipment. A checker detonator is intended for initiating borehole charges, as well as for use as explosives.

 In domestic practice, mainly TNT detonator checkers are used, such as T-400G OST 84-411-80 and T-900G TU 7288-001-07510307-96. They are distinguished by low water resistance, i.e. decreased susceptibility to the initial initiating impulse after prolonged exposure to water. Detonation checkers are deprived of this drawback according to the certificate for utility model N 8111 of 10/16/98 (application 97113322 of 08/07/97), which have an additional reinforcing element from a powerful explosive. Closest to the claimed checker according to this application, containing in the nest an additional cylindrical element of a powerful explosive (plastite, phlegmatized RDX, etc.) - option No. 1 description.

 The checker reliably detonates after 35-day exposure to water at a pressure of 5 atm from the ED-8 detonator capsule and the Swedish Nonel system, however, there is a need to ensure reliable fixation of the additional element in the socket, preventing its displacement or loss during transportation and operation.

 In accordance with the claimed technical solution, this goal is achieved by introducing into the design of the checker a fixing element buried in the body of the checker and protruding into the nest by a certain amount, allowing you to insert an additional element, but preventing its further arbitrary displacement. The locking element may have a different design. It can be made, for example, in the form of a solid rubber or hollow ring both round in cross section (Fig. 1 and Fig. 2), and trapezoidal (Fig. 3). This can be a corrugated plastic ring (figure 4), etc.

 The method of introducing the locking element into the checker is as follows. Before making checkers, a fixing element is put on (with tension) the technological punch forming the socket for the capsule at the required level. After forming the checkers, the punch is removed, and the fixing element remains in the body of the checker, while protruding into the nest by an amount depending on the shape, size and material of the element. The elastic deformation of the fixing element allows you to enter an additional element into the bottom of the socket and fix it there. Testing showed that the introduction and fixing of the additional element is provided when the locking element protrudes into the socket by a value of 0.3 to 1.5 mm for various types of fixing and additional elements. The type of explosive also affects the choice of the optimal fixation option. So, for plastite inserted and extruded into the socket, the variant of FIG. 4 can be used, while for the drafts of phlegmatized explosives, the variants of FIG. 1 and FIG. 2 are preferred.

Claims (3)

 1. A detonator sack having a nest filled in the bottom with explosive, characterized in that it contains an explosive fixing element, buried in the body of the detonator saber and protrudes 0.3-1.5 mm into the nest.  2. Checker-detonator according to claim 1, characterized in that the locking element is made in the form of a ring, a hollow ring or a corrugated ring.  3. Checker-detonator according to claim 1, characterized in that the locking element is made of rubber or plastic.

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