Shrink-on equipment of housing of rotor of nuclear main pump

Abstract

The invention relates to shrink-on equipment of a housing of a rotor of a nuclear main pump, which is mainly used for the shrink-on of the housing of the rotor of the nuclear main pump and belongs to the field of nuclear power. The shrink-on equipment of the housing of the rotor of the nuclear main pump comprises three parts which are a heating module, a shrink-on module and a control module. Theautomatic control of the furnace temperature in a heating furnace is realized by the programming of a computer, and the housing of the rotor is heated to a shrink-on state; the action of each transmission mechanism which is connected in the shrink-on equipment by an industrial personal computer through a cable conductor is controlled by the programming of the computer so as to drive each component in the equipment to synergistically work and finish the shrink-on of the housing of the rotor of the nuclear main pump together. The invention has high degree of automation in the shrink-on process by the control of the programming of the computer, reaches the requirements of high speed and high accuracy, can ensure the assembly accuracy of the housing of the rotor, has high stability and high reliability and is suitable for the quick and accurate shrink-on of the housing of the rotor of the nuclear main pump.

Description

technical field [0001] The invention relates to thermal fitting equipment for a nuclear main pump rotor shielding sleeve, which is mainly used for thermal fitting of the nuclear main pump rotor shielding sleeve and belongs to the field of nuclear power. Background technique [0002] The nuclear main pump is the only rotating equipment in the primary circuit system of the nuclear power plant. It is the heart of the nuclear island and belongs to the first-level nuclear safety equipment. It is one of the key equipment of the PWR nuclear power plant. For the third-generation passive nuclear reactor, a canned pump with a canned motor is used. The motor in the pump is a vertical, water-cooled, squirrel-cage induction motor. The rotor of the motor is wrapped in a corrosion-resistant rotor shield. Inside the sleeve, the rotor shield is used to prevent the rotor copper bars from contacting the reactor coolant, thereby isolating the rotor copper bars from the system. [0003] The rot...

AI Technical Summary

Problems solved by technology

First of all, the rotor shielding sleeve of the nuclear main pump has an ultra-thin and large aspect ratio, and its shrink-fit stroke is large; secondly, the rotor of the nuclear main pump is heavy, and it is inconvenient to control the hoisting mechanism; The whole thermal fitting process requires fast and accurate to ensure the thermal fitting accuracy of the nuclear main pump rotor shielding sleeve, and the process should have high stability and reliability. The rotor is hoisted by a high-speed lifting crane to complete the thermal fitting of the rotor shielding sleeve It is difficult to meet the above requirements in the process; moreover, if the thermal fitting process of the rotor shielding sleeve is completed in the high-temperature atmosphere of the heating furnace, it will inevitably affect the performance of the rotor.

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