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A Strongly Sealed Explosive Bolt Device

An explosive bolt and strong sealing technology, applied in the direction of screws, threaded fasteners, connecting components, etc., can solve the problems of easy sealing failure and low reliability of explosive bolt sealing, avoid failure, enhance anti-explosion sealing ability, design Reliable and effective results

Active Publication Date: 2018-11-23
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a strong sealing explosive bolt device, which solves the problems of low sealing reliability and easy sealing failure of the existing explosive bolts

Method used

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  • A Strongly Sealed Explosive Bolt Device

Examples

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Embodiment Construction

[0024] Such as figure 1 As shown, a strong sealing explosive bolt device includes a bolt housing 1, a piston 2, a buffer ring 3, an O-shaped rubber ring 4, a non-metallic gasket 5, a propellant 6 and an igniter 7. The piston 2 and the buffer ring 3 are installed in the cavity of the bolt housing 1. The V-shaped groove 9 is designed on the bolt housing 1 as the weak link of strength. The piston 2 is designed with two sealing grooves and a detonation groove 8, O-shaped The rubber rings 4 are respectively installed in the two sealing grooves of the piston 2, the non-metallic gasket 5 is pasted on the bottom end surface of the piston 2 by curing glue, the explosive 8 is installed in the igniter 7, and then connected with the bolt housing 1 through thread fit . After the igniter 7 is energized and detonated, the explosive 6 is ignited to generate high-temperature and high-pressure gas, which pushes the piston 2 to move, and the piston quickly squeezes the buffer ring 3 and hits th...

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Abstract

The invention discloses a strong seal explosion bolt device. A bolt shell, a piston, a buffer ring, O-shaped rubber rings, a nonmetal gasket, explosive and an igniter are sequentially mounted on a main shaft from left to right; the piston and the buffer ring are mounted in a containing cavity of the bolt shell; a V-shaped groove is designed in the bolt shell to serve as a strength weak link; two sealing grooves and an explosion decompression groove are designed in the piston; the double O-shaped rubber rings are mounted in the two sealing grooves of the piston correspondingly; the nonmetal gasket is pasted on the bottom end face of the piston through curing glue; and the explosive is mounted in the igniter, and then the igniter is connected with the bolt shell in a thread fit mode. The situation that deflagration gas generated by the explosive is leaked from the V-shaped groove after a bolt is broken can be prevented, and a very good sealing effect is achieved.

Description

technical field [0001] The invention relates to a strongly sealed explosive bolt device. Background technique [0002] The explosive bolt device is an important spacecraft technology. It is mainly used as a power source to realize the separation function between the spacecraft body and components, between the compartments, and between the spacecraft and the launch vehicle. It can also realize the load or On-orbit unlocking and release functions of the equipment. [0003] Generally speaking, the basic composition of the explosive bolt device is similar, and it is usually composed of an ignition component, a main charge and a piston moving part. Among them, the piston moving part is usually designed with an O-shaped rubber ring to provide a seal for the establishment of a high-pressure environment during the explosive explosion process. , once the rubber ring does not play a sealing role, and the explosion gas leakage occurs, it will seriously affect the function of the devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B35/02F16B35/00F42B15/36
CPCF16B35/00F16B35/02F42B15/36
Inventor 叶耀坤丁锋祁玉峰李委托王文龙孙国鹏陈祥伟从强史文华李潇王波
Owner BEIJING INST OF SPACECRAFT SYST ENG
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