Optimization Design For Steam Turbine Seal

Vapor seal is an indispensable and important component in steam turbine for economic and safe operation.The performance of seal has a significant impact on the performance of turbine.The optimum design of seals could improve the efficiency of turbines effectively.The operation principle and the calculation method were introduced in this paper.Flow field in the seals and the structure optimization were studied with the help of numerical calculation by using the Fluent software.The value of the seal leakage was calculated.Based on the results,the flow regular in the seals and the feasibility of the optimum scheme were analyzed.It revealed the complexity of the flow field in the labyrinth seals in theory,and the performance of the seals has been improved.It could provide some theoretical footing and technical support for optimizing the design of seals.