RU2378607C1 - Device for separation of structural elements - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to space rocket machinery and is to be utilised in other economy industries where a necessity exists of structural elements joining with eventual separation. The device contains a body in the shape of a bolt with a head part and a threaded part, an inner cavity on the head part side, an explosive charge and an igniter contained in the inner cavity. The head and the treaded parts of the body are solder-joined together. The inner cavity is arranged inside the head part. The explosive charge is of a thermite composition.

EFFECT: prevention of damage to the adjacent devices, instruments and structural elements.

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Description

The invention relates to rocket and space technology, can be used in other sectors of the economy, where connection and subsequent separation of structural elements (aircraft, etc.) is necessary

A device for separating structural elements (pyro-bolt), comprising a housing made in the form of a bolt with a head and threaded parts and with an internal cavity from the side of the head part, an explosive charge and an igniter, are placed in the internal cavity [1].

The closest in technical essence is a device containing a housing in the form of a bolt with a head and a threaded part with an internal cavity from the side of the head part, an explosive charge and an igniter placed in the internal cavity [2].

The work of both of these devices is based on the destruction of the walls of the head part of the device’s body with the help of an explosive located inside, usually a blasting one. The igniter initiates an explosive which, when triggered, destroys the cylindrical part of the body. Thus, the mechanical connection between the structural elements of the object is violated.

The main disadvantage of such devices is the formation of high shock loads, high-temperature gas clouds and uncontrollably flying fragments when triggered, which can lead to disruption of the performance of structures and devices located near the separation device.

The objective of the proposed technical solution is to eliminate when triggered the device for separating structural elements of shock loads, high-temperature gases and fragments.

This is achieved by the fact that in the device for separating structural elements, comprising a housing in the form of a bolt with a head and a threaded part and an internal cavity from the side of the head part, an explosive charge and an igniter placed in the internal cavity, in contrast to the prototype, the head and threaded parts of the body interconnected by soldering, while the internal cavity is placed in the head part, and the charge composition of the explosive is termite.

The technical result is the exclusion of damage to surrounding devices, devices, structural elements, for example, a spaceship.

General view of the device shown in the drawings:

figure 1 - General view of a device for separating structural elements;

figure 2 - device after operation.

A device for separating structural elements consists of a head 1 and a threaded 2 parts. The head part 1 is made in the form of a glass 3 with an internal cavity 4, in which an explosive substance 5 of a thermite composition is placed, and with a socket 6 for installing an igniter 7, and is equipped, for example, with a hexagon 8 for a fixing tool. The threaded part 2 is a shank of a bolt with a thread cut on it. The end face of the glass 3 of the head part 1 and the end face of the threaded part 2 are interconnected by soldering 9. The device connects two separated structural elements 10 and 11.

The device operates as follows. In the initial state, the device connects the structural elements 10 and 11. From an external energy source (electricity, mechanical stress, etc.), an igniter 7 is activated, which ignites the explosive 5. The thermite composition has a low burning rate with low gas emission, but at the same time a large amount of heat is generated. The burning temperature of termite compositions exceeds 1000 ° C. High temperature melts the solder 9, as a result of which the device is divided into two components - the head and the threaded. The low emission of gases and, consequently, the low pressure inside the head part allows you to save it without violating the integrity and tightness. Thus, the separation of structural elements 10 and 11 occurs without impact, without the release of gases and the expansion of fragments. This fact allows you to install the device in any place of the object, while maintaining the safety of structures and devices.

Literature

1. Review journal "Issues of rocket technology", No. 10, 1969, "MIR", p.52, Fig. 8.

2. Kolesnikov KS, Kozlov V.I., Kokushkin V.V. The dynamics of the separation of aircraft. M., "Engineering", 1977, p.21, 22, Fig. 1.16.

Claims (1)

A device for separating structural elements, comprising a housing in the form of a bolt with a head and a threaded part and an internal cavity from the side of the head part, an explosive charge and an igniter placed in the internal cavity, characterized in that the head and threaded parts of the body are connected by soldering, when In this case, the internal cavity is located in the head part, and the charge composition of the explosive is termite.

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