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发明公开
CN105814314A 用于小型或中型模块化核反应堆的主回路的马达驱动离心泵 有权

用于小型或中型模块化核反应堆的主回路的马达驱动离心泵
摘要：
本发明涉及一种用于使传热流体在核反应堆的主回路中循环的马达驱动离心泵。该马达驱动泵包括密封的马达单元(12)、液压部件(13)及轴(17)，该轴被浸没在传热流体中，由该密封的马达单元(12)旋转并通过被刚性地固定到该轴(17)的液压部件(13)的推进器(22)泵送该传热流体；该马达单元(12)包括干式定子(18)和被刚性地连接至该轴(17)的浸没式转子(19)。该马达驱动泵还包括在该马达单元(12)的转子(19)和该液压部件(13)的推进器(22)之间刚性地安装在该轴(17)上的浸没式飞轮(23)，从而使在切断电力供给之后的减速时间最短；该飞轮(23)包括产生用于冷却该马达单元(12)的传热流体的循环的叶轮(40)。
摘要（英）：

The invention relates to a motor-driven centrifugal pump for circulation of heat transfer fluid in the primary circuit of a nuclear reactor. The motor-driven pump comprises a hermetic motor unit (12), a hydraulic section (13) and a shaft (17) immersed in the heat transfer fluid, rotated by the hermetic motor unit (12), and pumping the heat transfer fluid by means of an impeller (22) of the hydraulic section (13) that is rigidly connected to the shaft (17),the motor unit (12) comprising a dry stator (18) and an immersed rotor (19) rigidly connected to the shaft (17). The motor-driven pump also comprises an immersed flywheel (23) rigidly mounted on the shaft (17) between the rotor (19) of the motor unit (12) and the impeller (22) of the hydraulic section (13), enabling a minimum slowing-down time after cutting of the electrical power supply,the flywheel (23) comprising a vane wheel (40) generating circulation of the heat transfer fluid for cooling the motor unit (12).

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