An online detection method for the compression amount of the sealing ring during the torque loading process of a small solid rocket

Abstract

A solid small rocket torque loading process seal ring compression amount online detection method is characterized in that by analyzing the stress conditions of the screw threads, a spring washer and a seal ring during a process of loading a solid small rocket on an automatic loading device, the relation between the stresses of the screw threads, the spring washer and the seal ring and the screwing torques during the loading process is obtained; the loading process is divided into four stages, and a torque-angle ideal curve during the loading process is drawn; and by analyzing the slope of each stage curve of the ideal curve, an angle value when the position of the seal ring starts to be contacted during the loading process is obtained, thereby calculating the compression amount of the seal ring. By the method, the compression amount of the seal ring can be obtained without needing to measure, mark and calculate the solid small rocket again, the labor intensity is reduced, a measurement error brought by repeated measurement is avoided, and the online real-time accurate measurement of the compression amount of the miniature solid rocket seal ring is realized. The method can be used as the determination basis of the solid small rocket screwing degree detection.

Description

technical field [0001] The invention relates to an on-line detection method for the compression amount of a sealing ring during torque loading of a small solid rocket, belonging to the field of pyrotechnic device assembly. Background technique [0002] A small solid rocket is a typical aerospace pyrotechnic device, which uses solid matter as a propellant. When working, the igniter ignites the ignition cartridge, and then ignites the propellant through the ignition cartridge. The propellant burns to generate high-temperature and high-pressure gas, which converts chemical energy into heat energy. The gas expands and accelerates through the nozzle, and heat energy is converted into kinetic energy. The velocity is expelled from the nozzle thereby generating thrust to propel the missile or rocket forward. Small solid rockets are widely used in various fields of aerospace vehicles and play a pivotal role. For the convenience of assembly, the casing component and the nozzle compo...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the invention is: Aiming at the current problems that the measurement of the solid small rocket sealing ring requires multiple assembly, measurement and calculation, the process is complicated, the operation is cumbersome, the labor intensity is high, and the efficiency is low, a torque loading process of the solid small rocket is proposed The online detection method of the compression amount of the sealing ring can not only improve the detection efficiency of the compression amount of the solid small rocket sealing ring, reduce labor intensity, but also the measurement accuracy can meet the engineering requirements

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