核电厂立式长轴泵振动浅析

Analysis on Vibration of Vertical Long-shaft Pump in Nuclear Power Plant

立式长轴泵是核电领域近些年来应用的新一代节能环保型提升泵,其结构设计选用优秀的水力模型,自身还具有高效、节能、可靠、吸入性好等特点。其设计采用了导叶式泵体,与蜗壳式本体相比,还消除了径向应力,从而保证长轴泵在运转时能够更加平稳可靠。该泵可输送高黏度、高温小于80℃以及固体颗粒度小于8%的介质,已被广泛应用于电力、矿山、冶金、环保、制药以及石油化工等领域,但是在生产运行当中常会出现振动超差的问题。在处理水泵振动时必须从大视野多角度进行综合分析,只有这样才能更有效地将泵组振动问题彻底控制在设计允许的范围内。为此,本研究对立式长轴泵设备的设计、供货、施工以及试运等方面常见的问题和缺陷进行了逐一分析,并提出了相应的处理措施,可供同仁所借鉴。

Vertical long-shaft pump is a new generation of energy-saving and environmentally friendly lifting pumpapplied in the field of nuclear power in recent years.lts structural design uses excellent hydraulic model.it also has the characteristics of high efficiency,energy saving,reliability and good suction.Not only the guide vanepump body is used in the design,but also the radial stress is eliminated compared with the volute body,so as to ensurthat the long shaft pump can be more stable and reliable when running.lt can bear the transmission of high viscosityhigh temperature less than 80C and solid particle size less than 8% of the medlum,has been widely used in electricpower,mining,metallurgy,environmental protection,pharmaceutical and petrochemical and other fields.However,inthe production and operation of the vibration is often out of the problem,in the treatment of pump vibration must befrom a wide field of vision multi-angle comprehensive analysis,only in this way can more effectively the pump groupvibration problem thoroughly control within the design allowed range,To this end,the vertical long shaft pumpequipment design,supply,construction and trial operation of the common problems and defects were analyzed one byone,and put forward the corresponding treatment measures,for colleagues to learn from.