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High pressure air large flow field correction device and method

An on-site calibration and high-pressure air technology, applied in the direction of testing/calibration devices, measuring devices, liquid/fluid solid measurement, etc., can solve problems such as difficult to meet the use requirements, air flow error, poor measurement accuracy, etc., and achieve rapid gas temperature field Uniformity, improvement of measurement accuracy, and effect of error reduction

Active Publication Date: 2018-02-16
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology

The study found that if the flow coefficient obtained under the condition of low pressure and small flow is applied to the condition of high pressure and la

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  • High pressure air large flow field correction device and method
  • High pressure air large flow field correction device and method
  • High pressure air large flow field correction device and method

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Embodiment Construction

[0072] The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings, so that those skilled in the art can understand and implement the present invention.

[0073] The present invention is an air flow meter calibration device, see figure 1 , the high-pressure air large-flow on-site calibration device of the present invention includes a high-pressure air source system 1, a main pipe 2, a cooling water system 3, a measurement control system 4, and a flow secondary standard system 5, which are sequentially arranged on the main pipe along the high-pressure and large-flow air flow direction. Pressure regulating device 6, voltage stabilizing and rectifying device 7, calibrated air flow meter 8, tee pipe 9, quick reversing valve 10 and standard container 11 on road 1;

[0074] The air outlet of the air flowmeter 8 to be calibrated is connected with the air inlet of the three-way pipe 9, one air outlet of the three-way pipe...

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Abstract

The invention relates to a high pressure air large flow field correction device and method. The device comprises a high pressure air source system, a main pipe, a cooling water system, a measurement control system, a flow secondary standard system, a pressure adjusting device, a pressure stabilizing rectification device, a corrected air flowmeter, a three-way pipe, a quick veering valve and a standard container, wherein the pressure adjusting device, the pressure stabilizing rectification device, the corrected air flowmeter, the three-way pipe, the quick veering valve and the standard container are arranged on the main pipe in the high pressure large flow air flowing direction in sequence. The correction method of the device comprises the steps of 1, primarily correcting the corrected airflowmeter; 2, secondarily correcting the corrected air flowmeter. Real work high pressure and the large flow environment of the air flowmeter are comprehensively simulated, correction of the air flowmeter is achieved, and an air flowmeter flow coefficient under a high pressure air large flow real using condition is obtained.

Description

technical field [0001] The invention belongs to the technical field of air flow meter calibration, and in particular relates to a high-pressure air large-flow on-site calibration device and method. Background technique [0002] In the calibration of air flow meters, especially in supersonic and hypersonic wind tunnels, the air flow that needs to be provided is getting larger and higher, and the pressure is getting higher and higher. The inlet pressure of a single air flow meter has reached 23MPa, and the flow has reached 60kg / s. [0003] Since there is no high-pressure and large-flow calibration device with such corresponding conditions at present, the air flowmeter can only be calibrated under the condition of low pressure and small flow to obtain the flow coefficient of the flowmeter, and it can be used directly under the condition of high pressure and large flow. The study found that if the flow coefficient obtained under the condition of low pressure and small flow is ...

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Application Information

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IPC IPC(8): G01F25/00
CPCG01F25/17
Inventor 边东伟程树伟李彤雷博娟孙志强佘彩青张鹤平
Owner XIAN AEROSPACE PROPULSION INST
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