RU2300070C2 - Gas dynamic pressure source - Google Patents

Abstract

FIELD: test equipment, applicable for production of high mechanical loads on various objects.

SUBSTANCE: the problem of the invention is to exclude pressure loss from the chamber working space. The problem is solved due to the shut-off of the opening of the lead-in of the initiation line in the chamber body after the feed of the initiation pulse to the electric detonator.

EFFECT: enhanced efficiency of the high-pressure source.

5 cl, 4 dwg

Description

The invention relates to gas-dynamic devices, the energy source of which are gas-generating charges, for example, powder, explosives, explosives, pyrotechnic.

Known ballistic installation (BU), containing a high-pressure chamber with a powder charge and a device for its initiation, an acceleration tube connected to it, separated from the chamber by a diaphragm. A thrown object is placed in the acceleration pipe, which, after rupture of the diaphragm by the pressure of the powder gases, is driven at a given design speed, see A.C. SU 1763923, publ. BI No. 35, 1992

The disadvantage of the high-pressure chamber of the indicated control unit is the need to disconnect it after blasting and re-arrange the input of wires through the chamber wall.

The closest analogue of the claimed is a gas-dynamic pressure source according to US Pat. RU No. 2135927, publ. BI No. 24, 1999. The specified source contains a housing in which a hollow cylindrical powder charge is placed with a rod axial igniter and ignition means, which is used as a detonating cord inserted into the chamber cavity through an opening in the end of the housing. In the opposite end there is a feed hole through which the explosion products act on the loaded object.

The disadvantage of this device is expressed in the reduction of the efficiency (Efficiency) due to significant pressure losses of the explosion products through the hole for entering the ignition means initiation line.

The technical problem to be solved is the elimination of pressure loss of the explosion products through the specified hole. The expected technical result is to increase the efficiency of the pressure source.

The specified technical problem is solved by a gas-dynamic pressure source containing a high-pressure chamber, a gas-generating charge placed in it, a device for its ignition and initiation, an axial flow hole and an opening of an input line for initiating a charge ignition device are made in opposite ends of the chamber body. According to the invention, a seat for a locking element is made coaxially with the hole for inputting the initiation line, which is mounted in the chamber with the possibility of movement under pressure and overlapping said hole. The locking element is made with at least one channel offset from the axis for the initiation line. The locking element may be cylindrical or cylindrical. It can also be hollow. In this case, the channel displacement should be not less than the diameter of the hole for entering the initiation line into the chamber.

The presence of a locking element, which, under the action of the pressure of the explosion products, moves into the saddle at the end of the housing, allows you to block the hole for entering the initiation line and eliminate pressure loss of the explosion products (PV) or combustion, and increase their effect on the loaded body.

The implementation of the locking element with offset one or more channels to enter the line of initiation provides a cutoff of wires in the collision of the locking element with a saddle.

The amount of channel displacement relative to an axis of at least the diameter of the hole in the housing creates a surface for pressing the wires with a locking element to the edge of the hole to cut them off.

The device is illustrated by drawings.

Figure 1 shows the claimed gas-dynamic pressure source in the context in a ready-to-work position.

In Fig.2 - the same device after the actuation of the charge.

In Fig.3 - locking element cylindrical shape.

Figure 4 - locking element made hollow.

The gas-dynamic pressure source consists of a high-pressure chamber 1, in the housing 2 of which a gas-generating charge 3 is placed, for example, from an explosive substance or gunpowder. An igniter device, for example, an electric detonator 5, is connected to the charge 3, to which an initiation line 6 is connected, for example, a blasting cable, through an opening 7 in the end of the housing 2. At the opposite end there is a consumable hole 8 for outputting high-pressure gas acting on the loaded object 9, installed on the acceleration section. A locking element 10 is movably mounted in the cavity of the chamber 1 coaxially with the hole 7. It has one (or more) channel 11 displaced relative to the axis of the chamber for inputting the wires of the initiation line 6 connected to the electric detonator 5. At the end of the housing 2 of the chamber 1, a saddle 4 of the corresponding locking element 10 of the form. The locking element 10 may be cylindrical or cylindrical. The displacement of the channel or channels from the axis in the locking element must be at least the diameter of the hole 7. The channels can be made in the form of holes in the body of the locking element or grooves on its forming surface.

Gas-dynamic pressure source operates as follows. An electric impulse is applied along the initiation line 6 to an electric detonator 5, which detonates the explosive charge 3 or ignites a powder or pyrotechnic charge. As a result of this, the pressure in the chamber 1 increases and the locking element 10, under the action of the explosion products, moves into the saddle 4, cuts off the wires of the initiation line 6 and closes the hole 7, excluding the air outlet from it, and, consequently, the pressure loss in the chamber. After that, all the energy of the high-pressure gas acts on the loaded body 9 through the hole 8. The experiments have confirmed a significant increase in the efficiency of the gas-dynamic pressure source.

Claims (5)

1. A gas-dynamic pressure source containing a high-pressure chamber, a gas-generating charge placed therein and a device for its ignition and initiation, and at the opposite ends of the chamber body an axial flow hole and an input opening of an initiation line of a charge ignition device are made, characterized in that it is coaxial with the hole for the input line of the initiation made a saddle for a locking element mounted in the chamber with the ability to move into the saddle under the influence of gas pressure and overlap specified hole, and the locking element is made with at least one offset from the camera axis channel for the initiation line. 2. The gas-dynamic pressure source according to claim 1, characterized in that the locking element is made of a cylindrical shape. 3. The gas-dynamic pressure source according to claim 1, characterized in that the locking element is made cylindrical in shape. 4. The gas-dynamic pressure source according to claim 1, characterized in that the locking element is made hollow. 5. The gas-dynamic pressure source according to claim 1, characterized in that the offset value of the input channel of the initiation line in the shut-off element is not less than the diameter of the hole for its entry into the high-pressure chamber.

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