Main helium fan motor cooling and ventilating structure and main helium fan motor

Abstract

The invention discloses a main helium fan motor cooling and ventilating structure and a main helium fan motor, and belongs to the technical field of main helium fan motors. The main helium fan motor cooling and ventilating structure and the main helium fan motor aim at solving the problems that an electromagnetic bearing on the main helium fan motor is complex in structure and can generate a largeamount of heat in a use process, so that a main helium fan cannot effectively and quickly dissipate heat. The main helium fan motor cooling and ventilating structure comprises rotating shafts, a first electromagnetic bearing, a second electromagnetic bearing, a fan and a shell, wherein a first electromagnetic bearing and a second electromagnetic bearing are fixedly arranged inside the shell, a cavity is formed among the first electromagnetic bearing, the second electromagnetic bearing and the shell, the rotating shafts are rotationally arranged on the first electromagnetic bearing and the second electromagnetic bearing, a gap is formed between the rotating shaft and the first electromagnetic bearing and between the rotating shaft and the second electromagnetic bearing, the two ends of therotating shafts extend out of the first electromagnetic bearing and the second electromagnetic bearing, and an air inlet and an air outlet are formed in the shell. According to the main helium fan motor cooling and ventilating structure and the main helium fan motor, an inner air duct and an outer air duct are arranged to realize inner cooling circulation and outer cooling circulation of the electromagnetic bearings, so that the interior of the main helium fan motor is fully cooled.

Description

technical field [0001] The invention relates to a main helium fan motor, in particular to a main helium fan motor cooling and ventilation structure and the main helium fan motor. Background technique [0002] The function of the main helium blower is to drive the helium gas in the primary circuit of the high temperature gas-cooled reactor to flow through the reactor core, and to provide sufficient flow of helium to pass through the primary circuit system during the normal start-up, power operation and shutdown of the reactor to drive the reactor core The generated heat is carried away. The electromagnetic bearing is one of the important parts of the main helium fan. It is used to support the rotating shaft and bear all the loads of the main helium fan under various operating conditions. The internal structure of the electromagnetic bearing is complicated, and it will generate a lot of heat during operation. If the heat dissipation is not good, the heat accumulation will cau...

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Problems solved by technology

[0003] In order to solve the problem that the structure of the electromagnetic bearing on the main helium fan motor is complicated and a large amount of heat will be generated during use, so that the main helium fan cannot effectively and quickly dissipate heat, the present invention provides a main helium fan motor cooling and ventilation structure and a main helium fan motor. Fan motor

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