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High temperature gas pressure test method

A gas pressure and test method technology, applied in the direction of measuring fluid pressure, measuring devices, instruments, etc., can solve the problems of not considering the zero point drift of the pressure sensor, not considering the influence of humidity on the pressure sensor measurement, large test errors, etc., to eliminate disadvantages effect, avoid the effect of short circuit, and improve the effect of measurement accuracy

Inactive Publication Date: 2018-06-19
ZHONGBEI UNIV
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Problems solved by technology

[0005] The embodiment of the present invention provides a high-temperature gas pressure test method, which is used to solve the large zero-point drift caused by the working temperature of the pressure sensor without considering the high-temperature gas pressure test in the prior art, resulting in large test errors, and Does not consider the impact of humidity on pressure sensor measurements

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] A high-temperature gas pressure testing device provided by an embodiment of the present invention, such as figure 1 As shown, the device includes: a housing 17 and a pressure testing device, a constant temperature control device and a constant humidity control device located in the housing 17; the pressure testing device includes: a pressure sensor 1, a sampling adapter 3, a cooling chamber 4, a The water outlet 5, the pressure guide medium 6, the water...

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Abstract

The invention discloses a high temperature gas pressure test method, and relates to the technical field of pressure test. The method comprises the steps that step 1, a test device is installed; step 2, a constant humidity control device is started; step 3, a constant temperature control device is started; step 4, cooling guiding and compressing of the medium are performed; and step 5, a pressure sensor transmits the acquired pressure value to a controller, and the controller transmits the received pressure value to a displayer to be displayed. The working temperature of the pressure sensor isacquired through a temperature sensor, and the working temperature of the pressure sensor is constantly stabilized within a specific temperature interval by using the heater, the cooler and the controller so that the adverse influence of the temperature characteristic of the pressure sensor on pressure measurement can be completely eliminated, and the measurement accuracy of the pressure sensor can be greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of pressure testing, in particular to a high-temperature gas pressure testing method. Background technique [0002] In experiments in the fields of aviation and aerospace, it is necessary to test the pressure of the gas when the engine is ignited, and the pressure collection is mainly done through the pressure sensor. [0003] The zero point drift of the pressure sensor is very small in the normal temperature environment, but during the high temperature gas pressure test, the high temperature is transmitted to the sensitive surface of the pressure sensor through the heat insulating medium, so that the working temperature of the pressure sensor will also change significantly, so that the pressure The sensor has a large zero point drift, the test error is large and even the sensor fails, which cannot meet the test requirements, but the existing high-temperature gas pressure test does not take this into conside...

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Application Information

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IPC IPC(8): G01L19/00G01L19/04G01L19/06
CPCG01L19/0092G01L19/04G01L19/06G01L2019/0053
Inventor 李晨熊继军
Owner ZHONGBEI UNIV
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