Novel thermal resistance and flow resistance test device for radiator

Abstract

The invention relates to the field of water cooling system in power electronics, and more specifically relates to a novel thermal resistance and flow resistance test device for a radiator. The device comprises a device box and a pedestal, wherein a thyristor radiator press mounting piece, a water circulation system and a test and acquisition device are arranged on the device box, and a power supply device and a reservoir are arranged in the device box; the thyristor radiator press mounting piece is arranged on the device box, one end of the thyristor radiator press mounting piece is connected with the device box while the other end of the thyristor radiator press mounting piece is connected with the test and acquisition device, the test and acquisition device is connected with the reservoir through the water circulation system, and the water circulation system is arranged between the thyristor radiator press mounting piece and the test and acquisition device; and the thermal resistance and flow resistance test device can synchronously perform thermal resistance test and flow resistance test, and uses a heating block to substitute thyristor elements, so that a thermal resistance curve and a flow resistance curve of the thyristor radiator can be obtained within short time, and basis for designing a DC (direct current) transmission converter valve cooling system is provided.

Description

Technical field: [0001] The invention relates to the field of water-cooling systems in power electronics, and more particularly relates to a novel radiator thermal resistance flow resistance testing device. Background technique: [0002] Traditional radiator thermal resistance flow resistance testing equipment is generally used to test air-cooled radiators or heat pipe radiators. The measurement of thermal resistance and flow resistance of water-cooled radiators is rarely applied to thyristor radiators, which do not have thermal resistance of thyristor radiators. Test conditions: First, the converter valve thyristor and radiator are generally press-fitted, and the press-fitting force is very high. The press-fitting force of the 6-inch thyristor radiator press-fitting structure is 187kN, and the traditional test equipment does not have the press-fitting conditions; Both thermal resistance and flow resistance measurement platforms collect temperature points on the outer edge o...

AI Technical Summary

Problems solved by technology

[0002] Traditional radiator thermal resistance flow resistance testing equipment is generally used to test air-cooled radiators or heat pipe radiators. The measurement of thermal resistance and flow resistance of water-cooled radiators is rarely applied to thyristor radiators, which do not have thermal resistance of thyristor radiators. Test conditions: First, the converter valve thyristor and radiator are generally press-fitted, and the press-fitting force is very high. The press-fitting force of the 6-inch thyristor radiator press-fitting structure is 187kN, and the traditional test equipment does not have the press-fitting conditions; Both thermal resistance and flow resistance measurement platforms collect temperature points on the outer edge of the radiator radius, and calculate the thermal resistance of the radiator with the average temperature of multiple points. The thermal resistance of the radiator obtained by this test method is smaller than the actual thermal resistance value, which is not Conducive to the protection of thyristor

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