Steam turbine generating heating system with double running modes

Abstract

The invention provides a steam turbine generating heating system with double running modes. The steam turbine electric heating system comprises a generator, a first coupler, a low-pressure rotor, a second coupler, a high- and medium-pressure rotor, a condenser and a low-pressure cylinder flow portion. The low-pressure rotor comprises a pure coagulating rotor and a backpressure heating rotor. The high- and medium-pressure rotor of a steam turbine is connected with one end of the low-pressure rotor through the second coupler, and the other end thereof is connected with the generator through the second coupler to perform generating heating. In an off-heating season, the pure coagulating rotor serves as the low-pressure rotor, and a system is operated in a coagulating mode; in a heating season, the pure coagulating rotor is replaced by the back pressure heating rotor, and the system is operated in a backpressure mode. The steam turbine generating heating system with the double running modes is characterized in that flow grade of the pure coagulating rotor is of 2X6, while flow grade of the back pressure heating rotor which is a one-piece-forged centerless rotor is of 2X4.

Description

technical field [0001] The invention relates to a heat supply system, in particular to a steam turbine power generation and heat supply system with dual operation modes. Background technique [0002] With the continuous improvement of people's living standards, the heating area has been continuously developed and the heat supply has been increasing. As one of the government's "people's livelihood" projects, heating work involves the quality of life of thousands of households and has been increasingly valued. Therefore, the development of new heating technology has become a good exploration to ensure the reliability of heating, which has important social significance. [0003] At present, my country's heating status is mainly based on steam extraction heating and small unit low vacuum back pressure heating technology, and there are a few areas where ground source heat pumps are used for cooling and heating. In addition, due to the continuous expansion of the heating area and...

AI Technical Summary

Problems solved by technology

Compared with the back pressure unit or low vacuum circulating water heating unit and the extraction condensing unit, the fundamental difference in heating economy is that the back pressure (or low vacuum circulating water heating) unit operates under the heating condition When the cooling source loss is fully utilized, only part of the extracted steam is used for heating in the extraction condensing unit, and the exhaust steam share of the steam turbine is reduced, but there is still a large cooling source loss

Images