Steam pressure matcher and control method thereof

Abstract

The invention relates to a steam pressure matcher and a control method thereof. The steam pressure matcher comprises a steam turbine and a steam compressor communicating with the steam turbine, and one side of the steam turbine is externally connected with high-pressure steam. The other side of the steam turbine communicates with a heat supply header, and one side of the steam compressor is externally connected with low-pressure steam. The other side of the steam compressor communicates with the heat supply header. One side of the heat supply header communicates with the high-pressure steam through a temperature and pressure reducer and a pipeline, and the other side of the heat supply header communicates with a heat removing user. According to the steam pressure matcher and the control method thereof, a steam jet type pressure matcher is replaced, wide application scenarios are achieved, and the urgent needs of the nation for energy saving and emission reduction are met. The steam pressure matcher and the control method thereof create a broader road for solving the contradiction between the operation safety of a large-scale turboset and heat supply need diversity and achieving theefficient combined heat and power generation of coal-fired / gas-fired power plants.

Description

technical field [0001] The invention relates to the technical field of cogeneration of large-scale pure condensing / extraction steam heating units, in particular to the technical field of multi-steam source steam pressure matching devices, especially a turbine-type steam pressure matching device and a control method thereof. Background technique [0002] The large-scale pure condensing steam turbine unit is transformed into extraction steam for heat supply to realize cogeneration of heat and power. Cogeneration of heat and power can reduce the loss of cold source in the process of power generation of the unit, improve the energy utilization rate of the thermal power plant, effectively reduce the standard coal consumption of the unit for power generation, and significantly improve the thermal economy of the unit. Centralized heat supply for combined heat and power generation can eliminate scattered small boilers in the area, solve the pollution emissions of scattered coal-fi...

AI Technical Summary

Problems solved by technology

The back pressure machine uses the pressure difference between the pumped high-pressure steam and the heating steam to generate electricity or output mechanical work. The power is determined by the heating load, that is, "power is determined by heat". When hot steam is required, the power output of the backpressure machine is limited, and in extreme cases, power generation may not be possible

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