Detonating tube

FIELD: blasting operations.

SUBSTANCE: invention relates to detonating cords and can be used for accurate in time transfer of detonation to the explosive charges in devices of spherical implosion of explosion. The detonating tube comprises a shell and a charge of high explosive, at that the shell consists of two layers, namely the inner thin-walled layer of a polymer with a melting temperature higher than the melting temperature of the outer thick-walled layer. On the inner surface of the outer layer there are longitudinal, along the axis of the tube of the rib, inclined at an angle to the radius of the tube and the thickness of the ribs less than the wall thickness of the inner layer of the shell. There is vacuum between the layers.

EFFECT: solution provides transmission of detonation from the primary detonator to the secondary detonator, without causing predetonation of the explosive.

1 dwg

 

The invention relates to detonating cords and can be used for accurate transmission time of detonation of the EXPLOSIVE charge devices in a spherical implosion explosion.

A device "Detonating cord" (Patent RU No. 85624 U1, IPC F42B 3/00 (2006.01), C06C 5/04 (2006.01), Application No. 2009110395/22, 19.03.2009).

1. Detonating cord containing polymer tube of heat-shrinkable material and a core of explosive substances, characterized in that the core of explosives wrapped PTFE film.

2. Detonating cord according to claim 1, characterized in that the core is made of plasticized explosives.

3. Detonating cord according to claim 1, characterized in that the core is made of bulk explosives.

4. Detonating cord according to claim 1, characterized in that the core is made of explosives in the form of draughts.

The disadvantage is the possibility of detonation of explosives (BB) in contact in the wrong place.

A device "Detonating cord" (Patent RU No. 2053988 C1, IPC 6 C06C 5/00, C06C 5/04, Application No. 93008874/08, 06.02.1993).

"...the cord contains housed in a polymer reinforced with the threads of the shell charge, high explosive and sealing the caps on the ends of the cord, wherein the polymer shell is made with longitudinal ribs, the height of which� refers to the minimum thickness of the shell, 0.35 to 0.75, and the sealing caps are made of soft or extra soft steel with force break of 30-45 kg/mm2.".

The disadvantage is the possibility of detonation of explosives (BB) in contact in the wrong place.

Known from: "Advertising Prospectus of the company Nitro Nobel (Dyno Explosives Group), 1995" and from the patent RU №2151758 C1 IPC 7 C06C 5/04, F42B 3/087, Application No. 98116640/02, 03.09.1998. Since 1973 the famous tube-waveguide system Nonel specially developed by Nitro Nobel". Tube-waveguide Nonel made from special varieties of plastic, on the inner surface of which a thin layer of deposited powder of HMX and aluminum, leaving the detonation tube indestructible. The prototype.

The disadvantage is the possibility of detonation of explosives (BB) in contact in the wrong place.

The technical result is a detonating tube (detonating cord), which ensures the transmission of detonation from the primary to the secondary detonator detonator through a mass of BB without causing premature detonation of EXPLOSIVES.

The technical result is achieved in that the membrane consists of two layers, namely, an inner thin layer of a polymer with a melting point higher than the melting point of the outer thick layer on its inner surface, the outer layer has a longitudinal �lengthwise axis of the tube edges, inclined at an angle to the radius of the tube, and the thickness of edges is less than the wall thickness of the inner layer of the shell, and between the layers of the vacuum.

The drawing shows a "Detonating tube in cross section.

Detonating tube (1) comprising a shell (3) and charge high explosive (2) of any type, characterized in that the shell (3) consists of two layers, namely thin-walled inner layer (4) of a polymer with a melting point higher than the melting point of the outer thick layer (5), on its inner surface (6) of the outer layer is made longitudinally along the axis (7) of the tube edges (8), inclined at an angle to the radius (9) of the tube (1), and thickness of the ribs (8) is less than the wall thickness of the inner layer of the shell (4), and between the layers of vacuum (10).

Tube (1) are made of a certain length and sealed at both ends after obtaining a vacuum. In the manufacture of ammunition crimping heating device melts the outer shell layer (5), crushed and melted edges (8) and is secured by vacuum sealing (10) between the layers. Cut the desired length of detonating tube. One end of the tube is located in the primary detonator, detonating a second end of the tube - secondary detonator. With the explosion of the primary detonator detonating wave goes high explosive� substance. She destroys the thin inner shell, and in a vacuum detonating wave is almost completely loses its energy. Inclined ribs on the inner surface of the outer layer of the explosion are pressed against the thick layer of the outer shell. They extinguish the rate of expansion of the remnants of the inner shell and fully absorb the remains of the detonating wave. If you produce an explosion according to the type of spherical implosion from the primary detonator located in the center of the sphere of high explosive, detonating wave reaches the secondary detonator located on the surface of a sphere of explosives, and will not happen premature detonation of the charge of the sphere of high explosive spherical implosion. Given that the detonation velocity is almost the same in detonating tubes of this type, the uniformity of the explosion and compression provided by these substances detonating tubes.

Technical and economic indicators significantly higher than the prototype, since the proposed device can replace high-precision nuclear detonators for ammunition using a spherical implosion explosion.

The list of items.

1 - detonating tube

2 - charge high explosive

3 - shell

4 - thin-walled inner layer

5 - thick-walled outer layer

6 - VN�internal surface

7 - axis

8 - rib

9 - radius

10 - vacuum

Detonating tube, consisting of a shell and charge, high explosive, characterized in that the membrane consists of two layers, namely an inner thin layer of a polymer with a melting point higher than the melting point of the outer thick layer on the inner surface of the outer layer is made longitudinally along the axis of the tube edges inclined at an angle to the radius of the tube, and the thickness of edges is less than the wall thickness of the inner layer of the shell, and between the layers of the vacuum.



 

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