Shock wave pressure test installation structure for shock tube calibration

A technology of pressure testing and installation structure, applied in the direction of force/torque/work measuring instrument calibration/testing, measuring devices, instruments, etc., can solve the problem that the shock wave ground reflection pressure test system cannot be dynamically calibrated, and the shock wave ground reflection pressure cannot be obtained. Test system dynamic characteristics, etc.

Inactive Publication Date: 2015-10-21
XIAN MODERN CHEM RES INST
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AI Technical Summary

Problems solved by technology

Such a calibration method does not consider the impact of the installation structure on the entire pressure measurement system during the shock wave ground reflection pressure measurement under actual damage conditions. It can only calibrate the dynamic sensitivity of the pressure sensor and obtain the dynamic characteristics of the pressure sensor, and cannot realize The dynamic calibration of the shock wave ground reflection pressure test system cannot obtain the dynamic characteristics of the actual shock wave ground reflection pressure test system

Method used

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  • Shock wave pressure test installation structure for shock tube calibration
  • Shock wave pressure test installation structure for shock tube calibration
  • Shock wave pressure test installation structure for shock tube calibration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Use the PCB 113 type pressure sensor as the sensor to be calibrated, install it in the assembly, put two buffer gaskets on the assembly, and fix the assembly on the mounting base through the clamping piece.

[0026] Put the sealing ring in the empty groove of the mounting seat, place it at the end of the GXJ-100s high-pressure shock tube developed by 204, and start the hydraulic cylinder to seal the low-pressure section of the shock tube. After installing the diaphragm in the sandwiched section of the shock tube, seal the sandwiched section and the high-pressure section. First inflate the low-pressure section, then inflate the sandwich section, then inflate the high-pressure section, and finally deflate the sandwich section, the diaphragm ruptures, and an ideal step wave acts on the mounting seat. The pressure signal output by the pressure sensor is as figure 2 As shown, it can be seen that in addition to the resonance signal (500kHz) of the pressure sensor and the os...

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Abstract

The invention provides a shock wave pressure test installation structure for shock tube calibration, and belongs to the technical field of dynamic calibration. The shock wave pressure test installation structure is a pressure sensor installation structure of shock wave ground reflection pressure measurement in a damage condition. The structure can be installed at a tail end of a shock tube and performs dynamic calibration. The structure comprises a mounting base, a component, buffer spacers, a clamping element and a pressure sensor. The pressure sensor is installed on the component, the buffer spacers sleeve two ends of the component, the component is placed in the mounting base then, and the component is fixed to the mounting base through the clamping element. After installation is completed, an end face of the pressure sensor, an end face of the component and an end face of the mounting based are flush with each other. The dynamic calibration of a shock wave ground reflection pressure measurement system in an actual damage condition can be achieved, and actual dynamic characteristics of the shock wave ground reflection pressure measurement system are obtained.

Description

technical field [0001] The invention belongs to the technical field of sensor calibration, and in particular relates to a shock wave pressure test installation structure. The structure is installed at the end of a shock wave tube for dynamic calibration to obtain the dynamic characteristics of a corresponding shock wave pressure test system. Background technique [0002] Shock wave pressure is an important basis for consideration in the assessment of blast field power. When measuring the ground reflection pressure of the shock wave in the actual shooting range, considering the weight of the mount, the thickness of the mount with the pressure sensor is designed to be thinner, generally not exceeding 15mm. The explosion shock wave acts on the mount of the pressure sensor, causing it to vibrate. The seismic wave generated by the explosion also causes the mounting seat to vibrate, which has a great impact on the pressure measurement. Therefore, the pressure sensor is installed o...

Claims

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Application Information

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IPC IPC(8): G01L25/00
Inventor 苏健军孔霖张俊锋何性顺潘文姬建荣陈君
Owner XIAN MODERN CHEM RES INST
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