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Infrared lamp array heat-flow density calibration device and calibration method

A technology of infrared lamp array and heat flux density, applied in the direction of measuring device, material thermal development, instrument, etc., can solve the problem that heat flux cannot be accurately measured, cannot accurately calibrate heat flux density of infrared lamp array, etc., so as to reduce test cost and improve reliability. Sexuality, the effect of reducing dosage

Active Publication Date: 2015-02-11
SHANGHAI INST OF SATELLITE EQUIP
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  • Application Information

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Problems solved by technology

However, the heat flux applied by the lamp array to the surface of the product cannot be accurately measured, resulting in the inability to accurately calibrate the heat flux density of the infrared lamp array

Method used

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  • Infrared lamp array heat-flow density calibration device and calibration method
  • Infrared lamp array heat-flow density calibration device and calibration method
  • Infrared lamp array heat-flow density calibration device and calibration method

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Embodiment

[0032] See attached figure 1 , the calibration test of the lamp array in a vacuum environment needs to go through the stages of vacuuming and establishing a low-temperature background (100K), and the stage of returning to temperature and pressure after the end of the test. The shape of the test product 8 is made according to the shape of the product to be calibrated, and its material and other physical and chemical properties are consistent with the product to be calibrated. The infrared light array 2 is set on the outside of the test product 8 through a support (not shown in the figure), and the infrared light array 2 The installation position of the test product 8 varies according to the shape of the test product 8. Ensure that the infrared lamps are evenly distributed on the outer surface of the test product 8, and the distance from the infrared lamp to the surface of the test product 8 is equal, so that the heat flow of the test product 8 is equal. .

[0033] See attached...

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Abstract

The invention relates to the technical field of spacecraft environmental simulation, and discloses an infrared lamp array heat-flow density calibration device. The infrared lamp array heat-flow density calibration device is characterized in that the material and shape of a set simulation piece is in accordance with a product to be calibrated, the outer side of the simulation piece is provided with a heating piece, a thermal control coating is sprayed on the outer side of the heating piece, and a thermal-protective coating is arranged on the inner side of the simulation piece; and a thermocouple is arranged between the simulation piece and the thermal-protective coating, and an infrared lamp array is arranged near the outer side of the simulation piece. The invention also discloses an infrared lamp array heat-flow density calibration method, wherein the simulation piece is respectively heated by energizing the infrared lamp array and by utilizing the heating piece, and the temperature fields in the two heating methods are compared; when the two temperature fields are the same, the heating power of the heating piece and the energizing current of the infrared lamp array are calibrated. The infrared lamp array heat-flow density calibration device provided by the invention solves the problem that the precision cannot be tested when the external heat flow is simulated by the infrared lamp array in a complicated surface spacecraft vacuum thermal test, thereby improving the stability of the test results; and through the calibration of the lamp array, the consumption of the heat flow sensor is lowered, and the test cost is lowered.

Description

technical field [0001] The invention relates to the technical field of spacecraft environment simulation, in particular to an infrared lamp array heat flux calibration device and calibration method. Background technique [0002] Before the spacecraft is launched into space, it must conduct a vacuum thermal test simulating a cold and dark space environment in a special space environment simulator to test the rationality of its thermal design and assess the high and low temperature performance of its stand-alone. The vacuum thermal test uses an infrared lamp array to simulate the external heat flow reaching the surface of the product. The infrared lamp array uses quartz infrared lamps as heating means. Infrared lamps are arranged on the outer surface of the product to form an array, which is called an infrared lamp array. [0003] The radiation spectrum distribution of infrared lamps includes not only infrared radiation, but also visible light radiation, which have different...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20G01M99/00
Inventor 季琨艾卓王大东谢文绚陈飞
Owner SHANGHAI INST OF SATELLITE EQUIP
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