Study On Large Flow Rate Valve And Quantitative Advancing Velocity Of Hydraulic Powered Support

The large flow rate valve of powered support and quantitative advancing velocity, which are really concerned in the powered support technical field, were deeply researched in the paper.. As for the large flow rate valve, taking the designing of TMFH 500 directional control valve, TMFDY320 hydraulic control single valve and TMFA7X400 safety valve for instance, the paper proposes new designing ideas and methods and describes the R&D of large flow rate valve in the respects of structure design, key parts calculation, computational fluid dynamics analysis, methods of reducing pressure impact and experimental ways. Especially, to do the flow field analysis for large flow rate valve by adopting the advanced computational fluid dynamics analysis software and monitor pipe's pressure and flow velocity change in the operating course of large flow rate valve, so as to optimize the structure of the new valve and shorten the design period with more rational design of large flow rate valve.According to the different operation way and influence factors, the paper sorts the advancing velocity of powered support into two categories, one is static advancing velocity and another is dynamic advancing velocity. In term of calculation of static advancing velocity, as the advancing velocity of a powered support in certain surroundings, firstly to analyze the liquid supplying and flow pressure properties of...