Multi-heat-source stepped heat supply energy-saving system of steam increasing machine

Abstract

The invention discloses a multi-heat-source stepped heat supply energy-saving system of a steam increasing machine. The system comprises a steam turbine intermediate-pressure cylinder, a steam turbine low-pressure cylinder, a condenser, a front heat supply network condenser, a steam increasing machine, a steam increasing machine heat supply network condenser, a back pressure machine heat supply network condenser, a heat supply network heater, a heat supply network back pressure machine, a heat supply network generator and a main transformer. The steam turbine intermediate-pressure cylinder is connected with the steam turbine low-pressure cylinder through a pipeline, the pipeline connecting the steam turbine intermediate-pressure cylinder and the steam turbine low-pressure cylinder is further connected with the heat supply network back pressure machine, the heat supply network back pressure machine is electrically connected with the heat supply network generator, and the heat supply network generator is electrically connected with the main transformer. According to the multi-heat-source stepped heat supply energy-saving system of the steam increasing machine, multiple stages of heat sources such as steam turbine exhausting, heat supply back pressure turbine exhausting, steam increasing machine exhausting and heat supply back pressure turbine extraction can be sequentially input according to different required heat supply network loads and heat source qualities, heat supply hierarchy and energy stepped utilization are achieved, and the energy-saving effect is good.

Description

technical field [0001] The invention relates to the technical field of heat supply, in particular to an energy-saving system for multi-heat-source cascaded heat supply of a steam booster. Background technique [0002] my country is a country with a very single type of energy, and coal reserves account for more than 70% of the total energy. Although in recent years, we have vigorously developed wind, light and other clean energy power generation, it is undeniable that coal-fired units in thermal power plants are indispensable in the power grid. Alternative base components. Therefore, the energy-saving transformation of coal-fired units is of great significance in terms of social and economic benefits. [0003] The country pays more and more attention to the environment, and the scattered small boilers that pollute are gradually replaced by the centralized heating mode of combined heat and power; with the acceleration of urbanization, the scale of regional combined heat and ...

AI Technical Summary

Problems solved by technology

[0006] 1. All the latent heat of vaporization in the steam turbine exhaust is lost at the cold end;

[0007] 2. There is throttling loss in heating extraction and decompression, resulting in waste of high-parameter steam energy;

[0008] 3. The heating source is single, and the cascade utilization of energy has not been realized

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