Forward Forebay Of Circulation Water Pumping House Hydraulic Performance Explore And Structure Optimization

In the circulating water pump house of thermal power plant, the stability hydraulic performance of the former pool’s flow field can affect directly the circulating pump’s run safely and efficiently. For the whole of circulating water pumping house’s civil engineering’s reasonable investment also has the guidance function. According to the relevant provisions of the pump station design specification, the architecture’s design of pumping pool station should ensure the flow of water in the pool marching smoothly, the overall flow pattern, it can not produce larger area of the recirculation or eddy current area in the pool shall. In this paper, the pool is pumping station’s fill buildings, the water diversion come from the water pipe will be evenly distributed to each port; When the outside quoted flow are changing rapidly, the volume of the previous pool can play a regulatory role, therefore, we should try to ensure the pool before the pumping station have a good pool of flow pattern, to ensure that the water flow better go to the gate of each port.In the research, the former pool structure arrangement characteristics is the water pool culvert box with rectangular water pool is straight before the "T" type structure layout, former pool rectangular in whole set, long (along the flow direction)×width=30.0m×26.8m, water diversion channel entrance section headroom size b×h=3.5m×3.5m. The fluid dynamics of this structure software FLUENT Former pool fluent numerical simulation analysis, study the structure of Former pool fluent the velocity distribution, at the same time in gravity similar standard design normal physical model, in order to the results of the numerical simulation of for verification. The design of experiments under different conditions, through to the flow regime, typical sections velocity, observations of the water level, analyzed each section of the longitudinal flow transverse distribution law, at the same time, the paper analyzes the cause and effect are put forward, the previous pool optimization scheme. And choose the method of numerical simulation of optimization design for structure, the convection field and synchronous data extraction, simple intuitive reflect the previous pool structure on the influence of the flow regime, can save a lot of manpower and material resources, this paper introduces two effective and reasonable kinds of structure optimization and transformation measures to former pool.