浮重 meaning in English

buoyant weight
buoyed weight

One side , groovy cast steel flap valves increase the head loss , waste electricity , the other side , when flap valves close , it always delay time because of it ' s low proportion . the bump load seriously threaten the safety of pumping station . through the research and development of flap valve used in the renovation practices in the design of air - filled floating flap valve in no . 1 chuhe pumping station of anhui province , the working characteristics and design methods of air - filled floating flap valve are studied in this paper
但在拍门运行使用的同时，又时常暴露出一些缺陷，主要有：一是常规的铸铁或铸钢拍门加大了流道的水头损失，特别是对于装机容量较大的排涝泵站，其电能损耗相当可观；二是拍门在自重下下落关闭时，往往由于过多考虑水头损失导致浮重过小而延误闭门时间，致使水体倒灌，再因缓冲装置失灵导致闭门时门体对门框撞击力很大，严重危及站身安全。