Abstract
Based on the design theory of liquid-solid two-phase flow centrifugal pump, a new type TLB600-700 desulphurization pump was designed with huge distortions blades design method and impeller inlet super long extension blades design method. Three-dimensional model of internal flow field in TLB600-700 desulphurization pump was built by software PROE5.0, and the three-dimensional unsteady numerical simulation of the internal flow field was calculated, which revealed that the rotor-stator interaction between rotating impeller and volute is the reason why unstable flow generated. Statics analysis was carried out on the impeller in the stationary flow state with the method of fluid-structure interaction, and results indicated that the impeller strength and stiffness meet the design requirements. External characteristic test results of TLB600-700 desulphurization pump showed that all parameters of desulphurization pump designed by innovative method meet design requirements; especially the pump efficiency was increased by 4.15% higher than Chinese national standard.
Highlights
Electric power industry has large coal consumption, which makes it the main department for sulfur dioxide discharge reduction
The limestone-gypsum wet flue gas desulfurization method is the most widely used desulfurization technology all over the world currently, and the desulphurization pump is the core device of limestone-gypsum wet flue gas desulfurization unit for thermal power plants, its performance directly affects the control and slowdown of environmental disaster [1, 2]
The research of internal flow field and structure stress characteristics of desulphurization pump could ensure that is the product is operating in a stable, reliable, and efficient way, which will be of great significance for energy conservation and emissions reduction of coal-fired power plant and environmental protection [3,4,5]
Summary
The research of internal flow field and structure stress characteristics of desulphurization pump could ensure that is the product is operating in a stable, reliable, and efficient way, which will be of great significance for energy conservation and emissions reduction of coal-fired power plant and environmental protection [3,4,5]. As a result, improving the efficiency of large desulphurization pump could promote energy conservation and emissions reduction of electric power industry in our country. What is more, it has important practical significance for improving the industry economic benefit and social benefit
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