Method for optimizing particle erosion resistance of turbomachinery blade runner structure

Abstract

The invention discloses a method for optimizing particle erosion resistance of a turbomachinery blade runner structure. The method comprises the following steps: 1) acquiring field data during turbomachinery operation; 2) simulating a blade material accelerated erosion test in an actual service environment of the turbomachinery based on the field data of the turbomachinery during operation, and establishing a turbomachinery material erosion rate model and a particle rebound model; 3) establishing a turbomachinery flow channel gas-solid two-phase flow numerical simulation and erosion predictionmethod; and (4) building an anti-erosion optimization platform of the turbine machinery blade grid flow channel structure, achieving automatic optimization of particle erosion resistance of the bladeflow channel structure. According to the method, automatic optimization of particle erosion resistance of the blade flow channel structure can be achieved, and meanwhile accurate prediction of particle movement and erosion distribution in the turbine machinery blade grid flow channel can be achieved.

Description

technical field [0001] The invention belongs to the technical field of computer-aided design, and relates to a particle erosion-resistant optimization method for a turbine blade flow path structure. Background technique [0002] Turbomachinery is a dynamic fluid machine with blades, including axial flow or radial flow pumps, fans, compressors, steam turbines, gas turbines, wind turbines, etc., and is widely used in energy, electric power, metallurgy, and chemical industries. During operation, the flow path of turbomachinery is inevitably impacted and worn by fine dust and dust particles, resulting in rough wall surface of the flow path and changes in the shape of the blades. Such vicious accidents seriously affect the safe and efficient operation of turbomachinery. [0003] Aiming at the erosion damage of the flow channel of turbomachinery blades, the most commonly used method at present is to spray reinforcement coating on the surface of the flow channel. Most of the curr...

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Problems solved by technology

Based on the literature review, it is found that there are still few researches on the optimization method of turbine cascade profile and flow channel structure for particle erosion damage, and there is no fast and reasonable cascade profile and flow channel structure anti-erosion optimization method. Established, unable to effectively guide the optimization and improvement of turbomachinery cascade profile lines during the development of new units and the transformation of old units

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