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Calibration method of engine flowmeter

A calibration method and flowmeter technology, applied in liquid/fluid solid measurement, measurement devices, instruments, etc., can solve problems such as inability to engine flowmeter, calibration, etc.

Inactive Publication Date: 2016-08-17
INHALE HYPERSONIC TECH RES CENT UNIT 63820 OF PLA
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Problems solved by technology

It can effectively solve the problem that the existing flow calibration method cannot calibrate the engine flow meter

Method used

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  • Calibration method of engine flowmeter
  • Calibration method of engine flowmeter
  • Calibration method of engine flowmeter

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Experimental program
Comparison scheme
Effect test

Embodiment

[0055] A calibration method for an engine flowmeter, the steps are as follows

[0056] 1. Establish the same calibration conditions as the use environment

[0057]The engine generally works in an environment where the total temperature of the incoming flow is above 1000K, and it is necessary to use a wind tunnel to establish calibration conditions consistent with the operating environment. The wind tunnel uses hydrogen and oxygen-enriched air combustion heating to obtain the required test flow. The simulated flow parameters include: total temperature, total pressure and Mach number, and choose different oxygen-enriched pipe gas distribution parameters and oxygen-enriched throats. Diameter, squeeze hydrogen supply pressure and hydrogen throat diameter and nozzle, can get different test flow conditions.

[0058] Second, the establishment of engine flow measurement system

[0059] Place two channel flowmeters respectively in the downstream of the oxygen-enriched air throat and ...

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Abstract

The invention provides a calibration method of an engine flowmeter, and belongs to the technical field of flow measurement. The method comprises the following steps that 1, the calibration condition which is the same as that of the usage environment is established; 2, an engine flow measurement system is established; 3, a standard engine flow is obtained by means of a channel flowmeter; 4, engine flowmeter calibration data processing is conducted; 5, engine flowmeter calibration system uncertainty degree analysis is conducted. According to the calibration method of the engine flowmeter, the calibration problem of the engine flowmeter can be solved, the calibration coefficient and the uncertainty degree are provided, and the calibration method is mainly used for calibration of the engine flowmeter.

Description

technical field [0001] The invention belongs to the technical field of flow measurement Background technique [0002] Capture flow is one of the important performance parameters of the engine, and its accuracy is of great significance to the design and performance evaluation of the engine. Before the performance test of the engine, the intake port and the flow measuring device (referred to as the flowmeter) are usually connected together in a direct connection, and the capture flow is obtained through the test method. Therefore, the measurement accuracy of the flowmeter directly determines the capture flow measurement. accuracy. As with other types of sensors, the best way to obtain the measurement accuracy of a flow meter is to calibrate it. [0003] According to the existing calibration means, the method of flowmeter calibration can be broadly divided into direct calibration method and indirect calibration method according to the calibration principle. The direct calibr...

Claims

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Application Information

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IPC IPC(8): G01F25/00
CPCG01F25/15
Inventor 邓维鑫杨顺华刘伟雄杨样晏至辉李宏斌任虎肖保国王西耀张穹洲田野邢建文张顺平李季
Owner INHALE HYPERSONIC TECH RES CENT UNIT 63820 OF PLA
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