Flow Field Numerical Simulation and Performance Study of Two-Stage Superheated Electrical Steam Trap

Abstract

In order to promote the localization of critical valve in ultra-supercritical thermal power generating unit, a two-stage superheated electrical steam trap was designed and developed. Its structure and operation principle was introduced. Three-dimensional numerical simulation of the internal turbulent fluid field was performed by using Fluent of computational fluid dynamics software. The results show that the superposed design of associated reaction with multiaperture equalizer and guide sleeve was adopted in the two-stage superheated steam trap. The internal flow field become more uniform, local maximum velocity reached 37.2m/s. The brush erosion of valve seat is reduced and the service life is increased. Success rate of the first sample's trial-manufacture is greatly improved by using CFD simulation experiment in the process of design. Development cycle is shortened and the cost is reduced, which can provide a reference for two-stage superheated steam trap design.

Analysis of Flow Field and Pressure Loss for Fork Truck Muffler Based on the Finite Volume Method

“…An analysis was made of the effects of the length, turning form and the collocation on the cooling performance and the resistance characteristics [12]. Three-dimensional numerical simulation of the internal turbulent fluid field was performed by using Fluent of computational fluid dynamics software [13]. Most of the authors of above literature researched the internal flow field of existing muffler only, but they did not improve the structure of the original muffler based on the analysis.…”