Multi-grade using backheating drain residual heat generator of thermal power generator set

Abstract

The invention discloses an electricity generating device using multistage regenerative heat and remaining heat by thermal power machine set, comprising routing main steam turbine generator system and routine regenerative system and its characters lie in adding pressure reducing expanding container, steam jet, low pressure turbine, and small generator, etc., combining the steam jet and the pressure reducing expanding container to produce low pressure steam to drive the low pressure turbine, using drainage variable phase heat release of the regenerative system to produce low pressure steam, converting the low pressure steam heat energy into mechanical energy, converting the mechanical energy into electric energy through the small generator, and the lower pressure steam produced by drainage variable phase heat release can also serve as auxiliary steam source for heat users inside and outside power plant to feed heat to the users, and the working medium can return to the regenerative system, somewhat improving thermodynamic property of the regenerative system. It is an energy-saving, efficiency-raising measure.

Description

field of invention [0001] The invention belongs to the technical field of thermal power generation systems in thermal energy engineering, and relates to a multi-stage thermal power generation device utilizing regenerative heat and drainage waste heat. Background technique [0002] my country's electric power industry has achieved considerable development after the system transformation of "separation of factories and networks, and provinces as entities". As the main place for the conversion of primary energy and secondary energy, thermal power plants are also large energy consumers. This requires strengthening the management of power plants and reducing energy consumption for power generation. In thermal power plant energy saving and consumption reduction projects, thermal system is an important aspect that has energy saving potential. From the perspective of energy-saving practice and theoretical development, the technical perfection of steam turbines is the first priority...

AI Technical Summary

Problems solved by technology

From the perspective of energy-saving practice and theoretical development, the technical perfection of steam turbines is the first priority, followed by boilers. However, the exploration of the energy-saving potential of thermal systems is relatively lagging behind.

Taking a 300MW thermal power unit as an example, the regenerative heater unit has about 300 tons of water per hour and can generate nearly 30 tons of steam for the low-pressure steam turbine to work. cyclical, untapped potential

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