A pressure-sensitive paint calibration system and calibration method suitable for multi-component quenching gas
A calibration system, multi-component technology, applied in the field of pressure-sensitive paint calibration system, can solve the problems of limited flow meter control accuracy, inability to obtain mixed gas, etc., to ensure experimental and environmental safety, large calibration pressure range, and expand applications range effect
Inactive Publication Date: 2021-03-02
FUZHOU UNIV
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Problems solved by technology
However, this calibration device does not use a closed container, and is only suitable for the calibration of pressure-sensitive paints that use oxygen as the quenching gas, not for toxic quenching gases such as nitrogen oxides; and the calibration device does not use a vacuum pump, which is limited by the flowmeter The control accuracy of the gas cannot be obtained with a very low partial pressure quenching gas mixture
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[0035] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.
[0036] refer to figure 1
[0037] A pressure-sensitive paint calibration system suitable for multi-component quenching gas, including non-quenching gas high-pressure gas cylinder GH0, quenching gas-high-pressure gas cylinder GH1 and quenching gas-two high-pressure gas cylinder GH2, the non-quenching gas The outlets of the high-pressure gas cylinder, the first high-pressure gas cylinder of quenching gas and the second high-pressure gas cylinder of quenching gas are respectively connected with a pressure reducing valve and a shut-off valve in sequence, and the outlet of the shut-off valve is mixed with the low-pressure gas storage tank GL The air intake valve F3 is connected, the low-pressure gas storage tank is ...
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The invention relates to a pressure-sensitive paint calibration system suitable for multi-component quenching gas, comprising a non-quenching gas high-pressure gas cylinder, a quenching gas-high pressure gas cylinder and a quenching gas-two high-pressure gas cylinder, the non-quenching gas The outlets of the high-pressure gas cylinder, the first high-pressure gas cylinder of the quenching gas and the second high-pressure gas cylinder of the quenching gas are respectively connected in sequence with a pressure reducing valve and a shut-off valve, and the outlet of the shut-off valve is mixed with the inlet of the low-pressure gas storage tank The gas valve is connected, the outlet of the low-pressure gas storage tank is connected to the calibration cabin through the flow meter, and the calibration module is arranged on the calibration cabin, and the outlet of the calibration cabin is connected to the waste gas absorption device through the exhaust valve and the vacuum pump. There is also an exhaust gas path between the air storage tank and the calibration chamber exhaust valve and the exhaust gas absorption device; the pressure-sensitive paint calibration method includes multi-component quenching gas configuration, pressure-sensitive paint calibration and exhaust gas treatment after the experiment. The pressure-sensitive varnish calibration system and calibration method can realize the calibration of the quenching characteristics of the pressure-sensitive varnish under the condition of extremely low partial pressure of the quenching gas.
Description
technical field [0001] The invention relates to a pressure-sensitive paint calibration system and calibration method suitable for multi-component quenching gas. Background technique [0002] Pressure-sensitive paint (PSP) pressure measurement technology is a non-contact surface pressure optical measurement technology. Compared with the traditional discrete pressure measurement hole method, the pressure-sensitive paint pressure measurement technology can obtain the surface height of the aerodynamic model. The high-resolution full-field pressure distribution does not need to open pressure holes to destroy the surface of the model, and does not affect the flow field. It has significant advantages in measurement resolution, economy, and operability. The basic principle of pressure-sensitive paint measurement is that the gas molecules with paramagnetism "quench" the photoluminescent molecules in the pressure-sensitive paint. Oxygen in the air is a typical quenching gas, and other...
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IPC IPC(8): G01L27/00
CPCG01L27/005
Inventor 吴靖郭禹泽邵昆明
Owner FUZHOU UNIV