Radar positive pressure drying method based on hydrophilic membrane

Abstract

The invention relates to a radar positive pressure drying method based on a hydrophilic membrane. According to the radar positive pressure drying method, a positive pressure drying source is used for providing drying air, and positive pressure is maintained for interiors of a radar antenna cabin and a machine cabinet in a one-way air supplying mode so as to prevent external damp air, dust and salt mist from entering radar equipment and prevent dew condensation on the surface of a liquid cooling pipe inside the radar equipment. In order to meet a dew condensation-preventing requirement of a liquid cooling system inside the radar equipment, the air supplying dew point of the positive pressure drying source is not higher than 10 DEG C, and in order to reduce the air drying treatment pressure of the positive pressure drying source, the air supplying dew point is not lower than minus 5 DEG C; drying is performed in a way that the hydrophilic membrane separates out air moisture. The radar antenna cabin and the machine cabinet are difficultly closed completely, so that the positive pressure drying source needs to continuously supply air to the two pieces of equipment so as to ensure that the internal air pressures of the antenna cabin and the machine cabinet are above 50Pa higher than the outside atmospheric pressure; when the antenna cabin and the machine cabinet are dried by the radar positive pressure drying method, the equipment amount can be reduced and drying requirements of most of modern phased array radars are met.

Description

technical field [0001] The invention belongs to radar environment control technology, in particular to a radar drying method. Background technique [0002] Most components of modern phased array radar need to use liquid cooling for heat dissipation. The cooling liquid supply temperature for cooling the components in the antenna cabin is 18-32°C. In order to prevent condensation on the liquid supply pipeline and the outer surface of the components, the antenna The air dew point in the cabin needs to be lower than 18°C. At present, the control method of the air dew point in the radar equipment is mainly realized by means of refrigeration and condensation: the radar equipment is equipped with a low-temperature water-cooled cabinet and a circulation ventilation device, and the low-temperature water-cooled cabinet provides 8 for the circulation ventilation device. ℃ low-temperature water, the circulation ventilation device uses low-temperature water to dry and cool the air in the...

AI Technical Summary

Problems solved by technology

[0004] At present, hydrophilic membrane technology is an emerging technology, mainly used in industrial filtration and other fields, but there is no positive pressure drying application for radar equipment based on hydrophilic membrane. This invention uses positive pressure drying source based on hydrophilic membrane to provide positive pressure drying for radar equipment. It is the first time in the drying method of radar equipment to press dry air, ensure the dynamic pressure difference balance inside and outside the radar equipment, and prevent the external humid air and dust from entering through the pressure difference.

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