针对反应堆的特殊要求，主氦循环风机的设计包括总体结构、叶轮型式、冷却系统、轴承、测量仪表、电气贯穿件和隔断阀。
The design of the helium circulator involves the overall construction, the impeller type, the cooling system, the bearings, the instrumentation, the electrical penetrations, and the shutoff valve.
实验的测试结果表明工件-主轴系统的阻尼特性很大程度上受轴承结构型式及带轮安装方式的影响。
It is found that the damping properties of the work-spindle system are largely affected by the type of main bearing and the mounting method of the pulley.
重新设计粒化轮轴承的密封型式，并在轴承座外增加甩水环，解决了粒化轮卡死的问题；
They are redesigning the seal form of the bearing seat of granulation wheel and adding swing water ring out of the bearing seat, then lock question of the granulation wheel was solved;
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