论文部分内容阅读
介绍了与３００ＭＷ机组配套的ＷＥＩＲ给水泵组的特点以及３年来的运行、检修情况。１２台给水泵组运行情况良好，噪音小，振动均在０．０１ｍｍ以下，能满足３００ＭＷ机组稳发满发，机组单泵运行能带２００ＭＷ。处理汽泵卡煞、直接冲转给泵汽轮机时，规定给泵汽轮机调门开度大于５０％而泵仍未转动，则应立即停止冲转，防止给泵因其它原因而扩大事故。消除机械密封泄漏，首先在运行中用手锤敲打机械密封外壳和轴套，其次是停用前置泵，松开机械密封轴套上的螺钉，将轴套外移，增加动静环之间的紧力，然后紧上螺钉。建议对密封水回水管采用软管形式或加装波形节，便于拆装，缩短更换心包的时间。
The characteristics of WEIR feedwater pump supporting 300 MW units and the operation and maintenance over the past three years are introduced. 12 sets of feed water pump running well, low noise, vibration are below 0.01mm, to meet the 300MW unit steady hair full, unit single pump operation with a band of 200MW. Disposal of the pump Kasha, directly to the pump turbine, the provisions of the pump turbine door opening is greater than 50% and the pump has not yet turned, you should immediately stop the red rotation, to prevent the pump to expand the accident for other reasons. Elimination of mechanical seal leakage, first of all, in the operation by hand hammer beat the mechanical seal shell and sleeve, followed by deactivation of the pre-pump, loosen the screws on the mechanical seal sleeve, the sleeve shift, increase static and dynamic ring between Tight, then fasten the screw. It is suggested to use the hose type or add the waveform section to the sealing water return pipe to facilitate the disassembly and assembly and shorten the time to replace the pericardium.