Steam turbine generator unit waste heat heating control method and steam turbine generator unit

Abstract

The invention provides a steam turbine generator unit which comprises a steam turbine and a generator coaxially connected with the steam turbine and further comprises a steam exhaust device, an air cooler and a surface type condenser, wherein a steam exhaust connecting pipe is arranged between a steam exhaust port of the steam turbine and a steam inlet of the steam exhaust device, and the steam exhaust device is used for cooling part of entering dead steam and discharging the remaining dead steam. A steam outlet of the steam exhaust device is connected with a steam exhaust pipeline, and one end, far away from the steam exhaust device, of the steam exhaust pipeline is connected with an air cooling flow dividing pipe with the other end connected with a steam inlet of the air cooler and a water cooling flow dividing pipe with the other end connected with a steam inlet of the surface type condenser. According to the steam turbine generator unit, the steam exhaust device is used for cooling the dead steam firstly, the steam exhaust device cools part of the dead steam firstly, the volume flow of the dead steam in a pipeline system is reduced, therefore, the steam resistance of the dead steam in the pipeline system is reduced, the steam exhaust pressure of the steam turbine generator unit is reduced, and the power generation efficiency of the steam turbine generator unit is improved.

Description

technical field [0001] The invention relates to the technical field of a turbogenerator, in particular to a method for controlling waste heat heating of a turbogenerator set and the turbogenerator set. Background technique [0002] The steam turbine generator set refers to a generator driven by a steam turbine. The superheated steam generated by the boiler enters the steam turbine and expands to do work, which makes the blades rotate and drives the generator to generate electricity. The steam releasing thermal potential energy will be discharged from the exhaust port of the steam turbine. The steam is called exhausted steam, and the steam discharged after doing work has a relatively high temperature, so it needs to be cooled and cooled. [0003] At present, many turbogenerators in the water-deficient areas in Northwest China use single direct air cooling. As the service life of the air cooler increases, the fins of the air cooler are easily covered with dust, and the cooling...

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Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a waste heat heating control method of a turbogenerator set and a turbogenerator set for the above-mentioned deficiencies in the prior art, which solve the problem of reduced power generation efficiency in the prior art

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