安装在水泵出口端的可曲挠橡胶接头或伸缩接头,如未设置防拉脱和限位装置(螺栓),在盲板力的作用下,管道系统有时可能会发生管道或设备偏移,严重的还可能会推坏泵壳或将可曲挠橡胶接头由法兰中拉出或将伸缩接头拉开,造成供水系统无法正常工作.因此为保证系统的安全运行,可选用防拉脱的可曲挠橡胶接头和带限位的伸缩接头或设置固定管架,并进行必要的校核计算,以消除盲板力对管道系统的影响.%If the flexible rubber joint and expansion joint installed at the outlet of water pump have no draw off-proof device or caging device(bolt), pipeline or device displacement may happen in the pipeline system with the above two kinds of joint under the action of blind flange force. If the situation is serious, the pump shell may be damaged; the flexible rubber joint and the expansion joint may be drawn off from flanges or pulled out, which can even cause the water supply system to work abnormally. Therefore, to eliminate the influence of blind flange force and ensure the safe operation of the said system, two measures: using flexible rubber joint and expansion joint with draw off-proof device or caging device (bolt), installing fixed pipe supports, should be taken; besides, verification and calculation were also necessary.
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