Primary helium fan of high-temperature gas cooled reactor

Abstract

The invention discloses a primary helium fan of a high-temperature gas cooled reactor. The primary helium fan comprises an impeller inner fixing ring, an impeller outer fixing ring, a shell and an impeller outer fixing ring mounting base body. A hot air guide pipe outer pipe is sleeved outside a hot air guide pipe inner pipe, the middle of the hot air guide pipe outer pipe is broken, the impeller inner fixing ring is sleeved outside the hot air guide pipe inner pipe, the impeller outer fixing ring is sleeved outside the impeller inner fixing ring, and the impeller outer fixing ring is located at the broken position of the hot air guide pipe outer pipe. A main helium fan impeller is connected between the impeller outer fixing ring and the impeller inner fixing ring, the impeller outer fixing ring is installed on an impeller outer fixing ring installation base body, and a shaft seal device, a top shaft, an eccentric device and a driving gear device are arranged on the impeller outer fixing ring installation base body. The fan can effectively solve the problem of inconvenience in maintenance of a primary helium fan, and is high in safety and the reliability.

Description

technical field [0001] The invention belongs to the field of nuclear energy development and utilization, and relates to a main helium blower for a high-temperature gas-cooled reactor. Background technique [0002] The pebble bed modular high-temperature gas-cooled reactor uses helium as the primary circuit coolant, and the primary circuit coolant is provided by the main helium fan to drive the pressure head. The main helium fan is installed on the top of the steam generator, and the main helium fan shell belongs to the primary circuit cooling The pressure boundary of the agent, the main helium fan is driven by a built-in motor, and the driving motor is a squirrel-cage asynchronous induction motor. The motor is installed inside the pressure boundary. On the one hand, it is not conducive to equipment maintenance and operation inspection. In addition, it will cause graphite dust deposition and affect the safe operation of electrical equipment. [0003] The rotor of the main he...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a main helium fan for a high temperature gas-cooled reactor, which can effectively solve the problem of inconvenient maintenance of the main helium fan, and has high safety and reliability

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