Quick response shock wave filter suitable for quasi-static pressure measurement

A fast response, shock wave technology, applied in the field of shock wave filter and fast response shock wave filter, can solve the problems of long time, small diameter of pressure transmission pipeline, slow rise of quasi-static pressure curve, etc., to suppress test errors, protect sensors, The effect of shortening the pressure transfer time

Active Publication Date: 2017-08-04
XIAN MODERN CHEM RES INST
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  • Abstract
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Problems solved by technology

However, the diameter of the pressure transmission pipe of this filter structure is too small and the length is too large. It takes a long time to establish the pressure balance between the pressure in the confined space and the sensitive surface of the sensor, and the measured quasi-static pressure curve rises slowly (about 100ms). Truly reflect the rise time of the quasi-static pressure of the internal explosion

Method used

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  • Quick response shock wave filter suitable for quasi-static pressure measurement
  • Quick response shock wave filter suitable for quasi-static pressure measurement
  • Quick response shock wave filter suitable for quasi-static pressure measurement

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Embodiment Construction

[0023] Such as figure 2 As shown, this embodiment provides a fast-response shock wave filter suitable for quasi-static pressure measurement, including a substrate 1, an air inlet 2, a cavity 3, a buffer gasket 4, and a pressure sensor 5, wherein:

[0024] The base body 1 is a stepped cylinder with stepped blind holes inside, external threads for fixed installation on the small platform stage, blind holes inside, the bottom of the blind hole and the end of the small platform stage are ground into a concentric hemispherical shell, and the ball The thickness of the shell is 6mm. The outside of the large platform stage is hexagonal, and the inner hole is provided with internal threads for fixing the pressure sensor 5. The thread size is matched according to the pressure sensor 5;

[0025] The air intake hole 2 is located on the end surface of the small platform stage of the base body 1, and communicates with the cavity 3;

[0026] The empty chamber 3 is a blind hole inside the s...

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Abstract

The invention discloses a quick response shock wave filter suitable for quasi-static pressure measurement, comprising a substrate (1), air inlet holes (2), a cavity chamber (3), a buffer gasket (4), and a pressure sensor (5). The substrate (1) is a step-shaped column with a blind hole inside. The blind hole inside the small step section is the cavity chamber (3). The air inlet holes (2) are arranged in the end face. The hole in the large step section is provided with an internal thread for installing the pressure sensor (5). Internal explosion high-pressure gas enters the cavity chamber (3) via the air inlet holes (2) and converges, and then acts on the pressure sensor (5) to get the quasi-static pressure. The advantages are as follows: the pressure transfer time is shortened while shock wave high-frequency component filtering is realized; a measured value closer to the real rise time of quasi-static pressure is obtained; and the sensor is protected from direct impact of high-pressure gas through air flow guiding and converging.

Description

[0001] The invention belongs to the technical field of damage assessment, in particular to a shock wave filter, in particular to a fast-response shock wave filter suitable for quasi-static pressure measurement. Background technique [0002] When the explosive charge explodes in a closed environment, there are two types of pressure effects: shock wave effect and quasi-static pressure effect. The shock wave effect is a process in which the front pressure of the precursor wave rises and decays sharply, forming a steep rising front of the shock wave overpressure peak, followed by an exponential decay, and the waveform is similar to a triangular wave. The quasi-static pressure effect is a process in which the pressure in the space rises relatively slowly and stabilizes to a lower pressure due to the high temperature and high pressure generated by the explosion and the outward expansion of a large amount of gas products restricted by the confined space. In order to obtain the change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
CPCG01L5/0052
Inventor 张玉磊李芝绒苏健军翟红波张卫华蒋海燕仲凯王胜强
Owner XIAN MODERN CHEM RES INST
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