Shock tunnel explosion relief device with continuously and uniformly adjustable explosive relief efficacy

Abstract

The invention provides a shock tunnel explosion relief device with continuously and uniformly adjustable explosive relief efficacy and applies to the field of wind tunnel experimental equipment. The shock tunnel explosion relief device comprises a shock wind tunnel which includes a detonation driving segment and an explosion relief segment; an explosion relief throttle device is mounted between the detonation driving segment and the explosion relief segment; the side of the explosion relief throttle device close to the explosion relief segment is provided with a diaphragm; the explosion reliefthrottle device includes a fixed plate and a moving plate attached to each other in concentric manner and having certain thickness; the moving plate can rotate around a co-axis to the moving plate and the fixed plate, and may be locked and attached to the side of the fixed plate close to the detonation driving segment under the action of a compression mechanism; the fixed plate and the moving plate are axially provided with a plurality of through holes identical in position. The explosion relief efficacy of a shock wind tunnel explosion relief segment can be autonomously adjusted as experiments require just through the single shock tunnel explosion relief device; the adjusting process is uniform and continuous; experimental equipment cost can be reduced; the explosion relief throttle device is applicable to different explosion relief experimental environments, and experimental efficiency is improved.

Description

technical field [0001] The invention relates to the field of wind tunnel experimental devices, in particular to a shock wave wind tunnel detonation device capable of continuously and uniformly adjusting the detonation efficiency. Background technique [0002] During the development of a hypersonic vehicle, a large number of ground simulation experiments are required to obtain data on the aerodynamic force and propulsion performance of the vehicle. The pulse-type shock tunnel is a kind of experimental equipment that uses unsteady shock wave compression to generate high-temperature and high-pressure gas, and plays an important role in hypersonic flow simulation. Among them, the detonation-driven shock tunnel is a way to generate unsteady shock waves by using combustible gas detonation, which has the characteristics of low operating costs. [0003] During the operation of the detonation-driven shock tunnel, the gas detonation produces a strong shock wave, which will seriously ...

AI Technical Summary

Problems solved by technology

There is a common problem in the above two methods: it is impossible to achieve continuous and uniform adjustment of detonation efficiency

It is unrealistic to purchase or process thick plates or Laval nozzles of different specifications during the test, and the cost of the test increases sharply. At the same time, the replacement process is troublesome, and the continuous detonation performance cannot be achieved by changing different thick plates or Laval nozzles. adjustment, not to mention continuous and uniform adjustment

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