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.

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 271-274
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.271
• Online since: September 2013
• Authors: Shu Xun Li, Ying Zhe Hou, Jian Hua Zhang, Lian Cui Li
• Keywords: Flow Resistance Coefficient, Numerical Simulation, Steam Trap, Two-Stage Superheater, Ultra-Supercritical

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