Efficient and flexible steam-electric hybrid power equipment

Abstract

The invention discloses efficient and flexible steam-electric hybrid power equipment. The hybrid power equipment comprises a steam turbine, a gear box, an asynchronous motor, a vacuum circuit breakerand an output device; the gear box is a gear box with a clutch function; the asynchronous motor is a double-shaft extension asynchronous motor; an output shaft of the steam turbine is connected with an input shaft of the gearbox; an output shaft of the gearbox is connected with one end of an asynchronous motor rotor, and the other end of the asynchronous motor rotor is connected with the input endof the output device; and the power end of the asynchronous motor is connected with the vacuum circuit breaker and is connected with a power bus through the vacuum circuit breaker. The hybrid power equipment can be flexibly switched among an electric operation mode, a steam operation mode and a steam-electric hybrid operation mode, energy-saving, power-saving and flexible operation requirements can be met, the unit operation reliability is higher compared with conventional pure electric and pure steam operation, the hybrid power equipment is matched with steam of a steel mill for gradient utilization, the emission is reduced, the operation reasonability and economical efficiency of the hybrid power equipment can be further improved, economic benefits of the steel mill is greatly increased, and great social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of power drive equipment in steel mills, and more specifically relates to a high-efficiency and flexible steam-electric hybrid power equipment. Background technique [0002] At present, as China's calls for energy-saving emission reduction and green manufacturing are getting louder, a series of mature and emerging energy-saving emission reduction technologies have been used in iron and steel enterprises. Among them, many waste heat recovery and utilization technologies are favored due to their advantages such as low investment, high efficiency, and low emissions. [0003] However, at present, the waste heat recovery and utilization method in the steel industry is relatively simple, mainly through the recovery of waste heat to produce steam for process heating and drying, and the excess is incorporated into the steam pipeline network or on-site power generation. With the progress of enterprise energy-saving ...

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Problems solved by technology

[0004] In addition, the market situation is changing rapidly. The cost of coal combustion and the cost of electricity are the main basis for a steel mill to choose the appropriate driving mode. However, the ranking of the two is not static. The Chaos of Changing Electricity

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