Mixed type steam Rankine combined cycle power generation device

Abstract

The invention relates to a mixed type steam Rankine combined cycle power generation device. A high pressure end steam Rankine cycle and a lower pressure end steam Rankine cycle are directly compounded through a low pressure steam generator 5. Latent heat of vaporization released when a high temperature steam Rankine cycle steam turbine discharges exhaust gas for condensing is completely utilized for power generation of a low temperature end steam Rankine cycle, and therefore load of a traditional steam Rankine cycle system condenser is effectively reduced by more than 20%. System optimization technology is adopted, and cycling absolute thermal efficiency of the whole system is improved by more than 5%. The mixed type steam Rankine combined cycle power generation device not only can be used for energy conservation improvement on an existing machine unit, but also can be used for designing and building a newly built machine unit, and has remarkable economic, social and environmental protection benefits.

Description

Technical field [0001] The present invention involves a hybrid steaming Landan -Ken Kenjin joint recycling power generation device, which is specific to the technology field of thermal power equipment in thermal power plant. Background technique [0002] The fire power plant with water steam as the working quality is a factory that transforms thermal energy into mechanical energy and transforms mechanical energy into electrical energy.The cycle of the application of the power plant is very complicated.Enter the boiler, heat and vaporize in the boiler, and form a high -temperature and high -pressure overheating steam. The overheating steam expands and does it in the turbine to become a low -temperature and low -pressure lack of steam.Water is sent to the boiler for a new cycle.As for the complex loop used by the thermal power plant, it is just based on the Langken cycle, in order to improve the thermal efficiency, the new cycle formed by the improvement is the heating cycle, the h...

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Problems solved by technology

Although this part of waste heat resources is a huge waste, it is difficult to recycle it. The main reasons are: (1) The quality of waste heat is low, and no effective utilization method has been found; (2) Recovery of this part of waste heat is often harmful to boilers. It is risky to make major changes to the original thermal system; (3) The heat balance problem is difficult to organize, and it is difficult to use it directly in the factory. It is often necessary to look for suitable heat users outside, and the heat load of heat users is often Will fluctuate, limiting the generalizability of the recovery method

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