Radiator for thyristor element and electric locomotive rectifier

Abstract

The invention relates to the field of cooling devices, and discloses a radiator for a thyristor element and an electric locomotive rectifier. The radiator comprises a skeleton and a plurality of main cooling fins, wherein the skeleton comprises a base part and a plurality of support leg parts extending from a first side surface of the base part; each of the plurality of support leg parts comprises two end part support leg parts adjacent to two ends of the first side surface; a second side surface, opposite to the first side surface, of the base part is used for being in contact with the thyristor element; and the main cooling fins extend between two adjacent support leg parts along the direction departing from the base part from the skeleton. According to the radiator for the thyristor element disclosed by the invention, short heat transfer paths from the thyristor element to the cooling fins are achieved; relatively large area of the cooling fins is ensured; and the radiator is convenient to assemble and disassemble, simple in structure and low in manufacturing cost.

Description

technical field [0001] The invention relates to a heat dissipation device, in particular to a heat sink for a thyristor element and an electric locomotive rectifier with the heat sink. Background technique [0002] At present, the rectifiers of DC drive electric locomotives in my country all use phase-controlled rectifier bridges composed of thyristor components, which rectify the single-phase input voltage on the catenary side of the electrified railway power supply system into DC and output it to the traction motor of the locomotive. Due to the high heat flux density and high calorific value of the thyristor element, if the thyristor element works for a long time, it will generate a lot of heat. It is necessary to dissipate heat from the thyristor element in order to maintain the temperature of the thyristor element at the specified temperature. temperature. If the thyristor element does not dissipate heat sufficiently, it will cause the junction temperature of the thyris...

AI Technical Summary

Problems solved by technology

and, if figure 1 As shown, since the cooling fins 7 are arranged side by side, the heat from the 5-inch thyristor element is conducted along the cylinder from the heat sink closest to the 5-inch thyristor element to the farthest heat sink. In this way, the distance of heat conduction is very short. long, resulting in insufficient heat dissipation

Therefore, when the space of the locomotive rectifier is already limited, it is difficult to increase the number or area of ​​aluminum heat sinks arranged side by side in the limited space, resulting in insufficient heat dissipation of the 5-inch thyristor element and burnout

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