3MW-grade full-cycle air inlet axial flow impulse type supercritical carbon dioxide turbine

Abstract

A 3MW-grade full-cycle air inlet axial flow impulse type supercritical carbon dioxide turbine comprises a main air adjusting combination valve and a turbine body, and the turbine body comprises an outer cylinder, an inner cylinder, moving blades, a front bearing box and a rear bearing box. The inner cylinder is arranged in the outer cylinder, the outer cylinder is connected with the shaft in a sealed mode, the two ends of the shaft are rotatably supported on the front bearing box and the rear bearing box, and the main gas adjusting combination valve is installed on the turbine body and communicated with the inner cylinder. The turbine body is a one-way flow impulse type turbine, the rotor comprises a moving blade and a shaft which are integrally manufactured, the inner cylinder is a cylindrical inner cylinder, and an air inlet structure of the inner cylinder is a tangential volute structure. The invention improves the stability of the rotor shaft system and the rigidity of the rotor, and adapts to wide-load high-efficiency stable operation.

Description

technical field [0001] The invention relates to a turbine, in particular to a 3MW level full-circumference intake axial flow impulsive supercritical carbon dioxide turbine, which belongs to the field of steam turbines. Background technique [0002] Supercritical carbon dioxide cycle power generation technology is a strategic and forward-looking key technology. Experimental research is the main research method at home and abroad. For supercritical carbon dioxide cycle test benches, construction costs are positively correlated with power generation. Therefore, starting from cost saving , The power level of the test bench is generally 3-5MW. [0003] For 3-5MW supercritical carbon dioxide turbines, according to the current design route, a centripetal structure is generally adopted, which does not have the ability to expand to high-power models, and this level of supercritical carbon dioxide cycle test bench cannot The verification of the key technology of the carbon dioxide ax...

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Problems solved by technology

[0003] For 3-5MW supercritical carbon dioxide turbines, according to the current design route, a centripetal structure is generally adopted. This structure does not have the ability to expand to high-power models. This level of supercritical carbon dioxide cycle test bench cannot The verification of the key technology of the carbon dioxide axial flow turbine greatly weakens the verification ability of the test bench and increases the construction cost of the supercritical carbon dioxide cycle

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