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Method and system for measuring air flow pressure in test room

A test workshop, pressure technology, applied in the measurement of fluid pressure, measurement device, engine testing, etc., can solve problems such as airflow pressure fluctuations, and achieve the effects of no periodic fluctuations, good repeatability, and stable measurement data.

Inactive Publication Date: 2014-10-29
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of fluctuating airflow pressure measured by the pressure scanning valve in the flow field measurement of the aeroengine test workshop, and propose a method and system for measuring the airflow pressure in the test workshop

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  • Method and system for measuring air flow pressure in test room
  • Method and system for measuring air flow pressure in test room
  • Method and system for measuring air flow pressure in test room

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Embodiment Construction

[0021] In order to better illustrate the technical solution of the present invention, the present invention will be further described through examples below.

[0022] A method and system for measuring air pressure in a test workshop proposed by the present invention, comprising a pressure probe 1, a pressure scanning valve 2, a pressure controller 3, a first pressure induction pipe 4 and a second pressure induction pipe 5;

[0023] The method of measuring the airflow pressure in the test room and the steps of using the system are as follows:

[0024] Step 1: Fix the pressure probe 1 at the position to be tested in the test workshop, and use the pressure probe 1 to obtain the airflow pressure.

[0025] Step 2: Use the first pressure introduction tube 4 to introduce the gas flow pressure obtained by the pressure probe 1 into the measuring end of the pressure scanning valve 2 .

[0026] Step 3: Connect the reference end of the pressure scanning valve 2 with the output end of the...

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Abstract

The invention belongs to the technical field of metering and testing of aero-engine test beds, and relates to a method and a system for measuring air flow pressure in aero-engine test run. The method for measuring the air flow pressure in a test room comprises the following steps: acquiring the air flow pressure of a position to be measured by using a pressure probe; accessing the measuring end of a pressure scanning valve through an air guide tube; connecting the reference end of the pressure scanning valve to the output end of a pressure controller; regulating the output pressure of the pressure controller, wherein the pressure is determined in such a manner that the pressure scanning valve works in an optimal measuring range. The method and the system have the advantages that the problem concerned with the measurement of air flow pressure in an existing engine test room can be solved, the reference end pressure of the pressure scanning valve is kept constant, measured data are stable, high repeatability is realized, periodic fluctuation is prevented, and the pressure scanning valve can work in the optimal measuring range.

Description

technical field [0001] The invention belongs to the technical field of metering and testing of aero-engine test benches, and relates to a method and system for measuring airflow pressure in an aero-engine test run. Background technique [0002] At present, when aero-engine test benches are used for testing, due to a large number of airflow pressure parameters to be measured, most of them use pressure scanning valves as the measurement equipment; and when measuring the airflow field in the engine test workshop, it is found that the measured values ​​have periodic fluctuations. This is caused by the inappropriate selection of the reference end of the pressure sweep. Commonly used pressure sweep valve reference end selections include the atmospheric pressure between the pipelines, the atmospheric pressure outside the test workshop, and the external atmospheric pressure after passing through the buffer tank. The test proves that these choices Neither can achieve the most satisfa...

Claims

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Application Information

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IPC IPC(8): G01L19/00G01M15/02
Inventor 王鹏王毅
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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