Turnover Technology and Application for Large Inlet Ball Valves by Single Hook
The inlet valve of pumped storage power station usually adopts the ball valve type to effectively block the upstream water flow.Due to the problem of height limit,some large inlet ball valves need to take a horizontal posture during transportation,and adjust to a normal vertical posture by flipped 90° after entering the power station.Through the investigation of the ball valve roll over technology,it is found that once the weight of the ball valve breaks through the load bearing of the auxiliary hook of the bridge crane,concerning about the impact of the single hook swing,it can only rent a truck crane or other auxiliary devices to match the main hook of the plant bridge crane to roll over.Taking the inlet ball valve of Jurong Pumped Storage Power Station as an example,the single hook turning technology is put forward.The calculation of wire rope length adjustment and the stress deformation analysis are used to ensure that the ball valve can turn over and no stress deformation occurs in the process,so as to get rid of the dependence on the truck crane.It has reference significance for similar power stations.
single hook turnoverinlet ball valvewire rope calculationstress deformation analysishydropower station
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