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High-temperature pulsating pressure and low-temperature pulsating pressure tracing method and device

A pulsating pressure and dynamic force technology, used in measuring devices, measuring fluid pressure, instruments, etc., can solve problems such as the inability to calibrate and trace the pulsating pressure

Active Publication Date: 2020-02-28
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the prior art cannot perform pulsation pressure calibration and traceability in high and low temperature environments, and provide a method and device for pulsation pressure calibration and traceability in high and low temperature environments, which can ensure high and low temperature pulsation pressure Calibration accuracy and traceability reliability under high and low temperature conditions

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  • High-temperature pulsating pressure and low-temperature pulsating pressure tracing method and device

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] High and low temperature pulsating pressure traceability methods, such as figure 1 As shown, for example, the measurement process of the device at normal temperature and low temperature environment is as follows:

[0030] At room temperature in the laboratory at 23.5°C, the frequency f is applied to the chamber (5) 1 The pulsating signal of the pressure sensor (3) measures the pulsating pressure P in the chamber (5) f1 , the pulsating pressure is transmitted to the standard dynamic force sensor (1) through the force transmission mechanism (2), and the standard dynamic force sensor (1) feels the dynamic force F f1 , clarify the corresponding relationship between dynamic force and pulsating pressure at room temperature

[0031] Use a standard digital pressure gauge (4) to measure the static pressure P in the chamber (5) 1 , the pressure in the cham...

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Abstract

The invention relates to a high-temperature pulsating pressure and low-temperature pulsating pressure tracing method and device, and belongs to the technical field of metering. The core of the invention is that pulsating pressure is converted into dynamic force through a force transmission mechanism, a standard dynamic force measurement system can be traced back to a static force standard and a dynamic force standard of a previous-stage metering mechanism, and the traceability relationship is clear. According to the invention, the problem that pulsating pressure calibration traceability cannotbe carried out under high and low temperature conditions due to the fact that no high and low temperature standard pressure sensors exist in existing pulsating pressure relative method calibration issolved, and the blank of the pulsating pressure traceability method under the high and low temperature conditions is filled.

Description

technical field [0001] The invention relates to a method and device for tracing the source of high and low temperature pulsating pressure, belonging to the field of metering technology. Background technique [0002] With the development of science and technology, the measurement of dynamic parameters is becoming more and more important. Dynamic pressure testing is widely used in aerospace, weapons and other national defense and military industries, and its actual working environment is often in harsh environments such as high temperature or low temperature. Fluctuating pressure is the most common type of dynamic pressure, such as pressure monitoring in aero-engines and gas turbines, real-time pressure measurement inside combustion chambers, stratospheric flight of aircraft, and various simulation tests using wind tunnels. The measurement of pulsating pressure is required . Existing pulsating pressure calibrations are all carried out in the laboratory at room temperature, w...

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Application Information

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IPC IPC(8): G01L27/00
CPCG01L27/005
Inventor 蔡菁王辰辰李峰
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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