Air test system used for service test of cooling device

Abstract

The invention relates to an air test system used for a service test of a cooling device. The air test system is characterized in that a main air cylinder 1,a main air cylinder 2, a main air cylinder 3 and a gas inlet rectifying air duct 4 are sequentially arranged on the air inlet side of a radiator of the cooling device, an air temperature measuring device 5 is arranged between a radiator of the cooling device and the main air cylinder 1 or between the main air cylinder 1 and the main air cylinder 2; and an air flow measuring device 6 is arranged on the main air cylinder 2, an air pressure loss simulator 7 is arranged between the main air cylinder 2 and the main air cylinder 3, and the front position and the rear position of the air pressure loss simulator 7 are provided with an air pressure loss measuring device. The air pressure loss simulator can simulate a real use working condition and a static pressure ring measures air pressure loss simulated value, can greatly improve the measuring accuracy, the air test system provides scientific, true and reliable test data for the optimum design and safety and reliability operation of the cooling device.

Description

technical field [0001] The invention relates to an air test system for performance test of a cooling device, which belongs to the technical field of heat exchange. Background technique [0002] Said cooling device of the present invention is usually made up of parts such as air cleaner, radiator, fan unit, fan motor junction box, blower, shock absorber, installation box, or by several parts in above-mentioned parts. According to the structure of the fan unit, the cooling device can be divided into two types: axial flow type and centrifugal type. In the axial flow cooling device, the fan unit sucks in external cold air from one side, and the cold air passes through the air filter, the axial flow fan unit, and the radiator successively, and then flows to the environment on the other side of the cooling device. [0003] According to the spatial arrangement of the radiator, the centrifugal cooling device can be divided into two types: single-end heat dissipation type and double...

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Problems solved by technology

However, conventional test devices and methods cannot accurately determine the heat transfer capacity of the above-mentioned cooling device under operating conditions, especially the air system of the conventional test device cannot simulate the back pressure caused by the high-speed operation of the train or the air pressure caused by the resistance of the cavity. loss

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