高压法三聚氰胺装置熔融尿素升压泵运行过程发生多起断轴事故，使装置多次出现非计划停工。

The packing axle seal of the melt urea pump leaked seriously, leading to many harmful effects, so we revamped the form of axle seal.

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子母叶片泵是广泛使用的高压泵，为了消除配流时的油击现象，在配流盘上设置了预升压闭死角及减振阻尼，这二者是影响泵的瞬时流量均匀性的主要因素。

The pre-loading process and silencing grooves were used on port plate in order to avoid the phenomenon of pressure pulsations, which are the main factors of flow ripple in pump.

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检查期间请停掉泵浦，拆掉升压管。 、检查期间请停掉泵浦，拆掉升压管。

Please stop the pumps and disconnect the booster pipes during the inspection.

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