RU183362U1 - INTERMEDIATE DETONATOR - Google Patents

Abstract

The utility model relates to means for initiating explosive charges (BB), namely to intermediate detonators designed to initiate borehole charges of industrial explosives in mining operations, in wells of any water cut, primarily when using mixing-charging machines for mechanized preparation of emulsion explosives ) and their loading of wells. The intermediate detonator comprises a cylindrical body, a lid with a socket for the detonator capsule, which is located with the possibility of fixing on the end of the body, and an explosive charge placed in the body. The lid has thickened walls in the area of its fixation on the casing, and the casing itself is made with a longitudinal groove on its outer side surface with the formation of a cavity for placement and fixation of the capsule-detonator initiation waveguide, and the explosive charge is made of emulsion explosives. The inner surface of the longitudinal groove is an open cylindrical surface, and the cross-sectional area of the cavity of the longitudinal groove for placing and fixing the waveguide is 1.1-1.25 of the cross-sectional area of the waveguide. The width of the longitudinal groove at its exit to the outer surface of the housing is 0.85-0.95 of the diameter of the waveguide used, which allows you to reliably fix the waveguide into the groove, protecting it from mechanical damage. The emulsion explosive charge placed in the housing may contain microspheres, which increases the stability of the detonator parameters when exposed to temperature fluctuations (up to 75-85 ° C). Fixation of the detonator capsule in the housing socket can be achieved by means of a latch, for example a spring lobe. 4 C.p. f-ly, 2 ill.

Description

The utility model relates to means for initiating explosive charges (BB), namely to intermediate detonators designed to initiate borehole charges of industrial explosives in mining, in wells of any water cut.

In industrial conditions, intermediate detonators in the form of checkers and cartridges of various designs and from various types of explosives are mainly used to initiate explosive charges in explosive cavities.

Known intermediate detonator universal, including a cylindrical body with a charge of explosive, in which there is a through axial channel and a parallel offset blind channel connected by a groove. The through channel is designed to accommodate a detonating cord or waveguide of a non-electric initiation system, and a dull channel for any known means of initiation. The detonator body can be made of paper or plastic (see the description of patent RU 2155318 C1, 08.27.2000, F42B 1/04.

The disadvantage of intermediate detonators of this type is the complexity of their manufacture and the inconvenience of using in connection with the need to simultaneously place inside the housing, as the detonator capsule and the waveguide.

Known intermediate detonator containing a cylindrical body, a lid with a socket for the capsule - detonator, located with the possibility of fixing on the end of the housing, and placed in the housing charge of bulk explosives (see the description of patent RU 2333452 C1, 10.09.2008 C2, F42B 3 / 00.

The disadvantage of this intermediate detonator is the impossibility of using the intermediate detonator described in the patent for blasting in quarries using emulsion explosives, which are now widely used.

The technical problem solved by the utility model is the creation of an intermediate detonator, which allows the use in its manufacture of an emulsion explosive (EBM), which is sensitive to a capsule - detonator.

The technical result obtained by using the utility model is to increase the stability of characteristics and reliability of initiation of a borehole explosive charge in comparison with intermediate detonators containing free-flowing explosives. as well as fixing and protecting the waveguide from mechanical damage when lowering it into the well.

The task is achieved by that. that in an intermediate detonator containing a cylindrical body, a lid with a socket for the detonator capsule, which is mounted with the possibility of fixing on the end of the body, and an explosive charge placed in the body, the cover has thickened walls in the region of its fixation on the body, and the body itself is made with a longitudinal a groove on its outer side surface with the formation of a cavity for placement and fixation of the initiation waveguide of the capsule-detonator, while the explosive charge is made of emulsion explosives with elnostyu to the primer - detonator.

In addition, the inner surface of the longitudinal groove is an open cylindrical surface.

It is preferable to make a cavity for placing and fixing the waveguide, with a cross-sectional area equal to 1.1-1.25 of the cross-sectional area of the applied waveguide and the width of the longitudinal groove at its exit to the outer surface of the housing in the range of 0.85-0.95 of the diameter of the applied waveguide .

It is advisable to place an emulsion explosive containing microspheres in the body of the intermediate charge detonator.

It is possible to make a nest for a capsule - detonator with a petal lock.

The utility model is illustrated in two figures. Figure 1 shows a longitudinal section of an intermediate detonator located in the borehole, and Figure 2 shows a cross section of a detonator.

In FIG. 1 and 2 positions marked:

1 - housing;

2 - BB;

3 - detonator capsule;

4 - waveguide

5 - groove

The intermediate detonator is a cylindrical housing 1 made of plastic and filled with explosives 2. Housing 1 is closed by a lid with a socket for the capsule - detonator 3. The lid is located on the end of housing 1 and is mounted on the housing by means of a quick coupling, for example, bayonet, threaded, etc. P.

The housing is filled with BB 2, and the detonator capsule 3 is inserted into the socket before the intermediate detonator is lowered into the well. The waveguide 4, through which the signal for initiating the detonator capsule 3 is transmitted, is placed and fixed outside the housing in a longitudinal groove 5, which is made on the surface of the housing 1. The cross-sectional area of the groove cavity for placement and fixation of the waveguide is 1.1-1.25 the cross-sectional area of the waveguide, and the width of the longitudinal groove at its exit to the outer surface of the casing is 0.85-0.95 of the diameter of the waveguide used. This embodiment allows you to reliably fix the waveguide 4 in the groove 5 and protect the waveguide from mechanical damage when the detonator is lowered into the well.

In the manufacture of the intermediate detonator, its geometrical dimensions are selected taking into account the conditions of use, while taking into account the dimensions of the borehole, detonator capsule and charging hose, the necessary mass and density of explosives in the explosive charge, necessary to ensure the reliability of detonation transfer from the intermediate detonator to the charge of an industrial explosive in the hole. The internal diameter of the case of the intermediate detonator must be at least three critical diameters of the explosive used to ensure maximum detonation speed.

The explosive charge of the intermediate detonator can be made of emulsion explosives, which improves the stability of its characteristics compared to TNT-containing checkers or cartridges used in the film as intermediate detonators.

Compared to intermediate detonators using TNT-containing checkers, intermediate detonators made of emulsion explosives are more stable when exposed to temperature fluctuations (up to 75-85 ° C).

Compared with intermediate detonators made of emulsion explosives placed in the film, the proposed intermediate detonator is less susceptible to mechanical damage and hydrostatic pressure due to the use of a rigid plastic housing and emulsion explosives with microspheres stabilizing the density of explosives.

Claims (5)

1. An intermediate detonator comprising a cylindrical body, a lid with a socket for a detonator capsule, located with the possibility of fixation on the housing end, and an explosive charge placed in the housing, characterized in that the lid has thickened walls in the region of its fixation on the housing, and the casing is made with a longitudinal groove on its outer side surface with the formation of a cavity for placement and fixation of the initiation waveguide of the capsule-detonator, while the explosive charge is made of emulsion explosives. 2. An intermediate detonator according to claim 1, characterized in that the inner surface of the longitudinal groove is an open cylindrical surface. 3. The intermediate detonator according to claim 1, characterized in that the cross-sectional area of the cavity of the longitudinal groove for placing and fixing the waveguide is 1.1-1.25 of the cross-sectional area of the waveguide, and the width of the longitudinal groove at its exit to the outer surface of the housing is 0 , 85-0.95 of the diameter of the waveguide used. 4. The intermediate detonator according to claim 1, characterized in that the charge of the emulsion explosive placed in the housing contains microspheres. 5. An intermediate detonator according to claim 1, characterized in that the nest for the capsule - detonator is made with a petal retainer.

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