Steam extraction heat supply system capable of improving energy utilization efficiency

Abstract

The invention discloses a steam extraction heat supply system capable of improving energy utilization efficiency. An outlet of a steam extraction pipeline is divided into two paths, one path communicates with an inlet of a steam turbine, the other path communicates with a heat release side inlet of a peak heater, a steam exhaust port of the steam turbine communicates with a heat release side inlet of a basic heater, a heat release outlet of the basic heater and a heat release side outlet of the peak heater communicate with an inlet of a drain tank, and an outlet of the drain tank communicates with a heat release side inlet of a drain cooler; an outlet of a water return pipeline is divided into three paths, one path communicates with a heat absorption side inlet of the peak heater, the second path communicates with a heat absorption side inlet of the basic heater, and the third path communicates with a heat absorption side inlet of the drain cooler; and a heat absorption side outlet of the peak heater, a heat absorption side outlet of the basic heater and a heat absorption side outlet of the drain cooler communicate with a water supply pipeline after being combined through pipelines. The system can achieve gradient utilization of energy.

Description

technical field [0001] The invention belongs to the field of thermal power generation, and relates to a steam extraction heating system capable of improving energy utilization efficiency. Background technique [0002] With the expansion of urban construction, the demand for heat supply continues to expand, and the heat supply method with the extraction steam of combined heat and power generation as the main heat source accounts for an increasing proportion. With the expansion of urban construction, the demand for heating continues to expand, and the central heating method with the steam extraction of cogeneration units as the main heat source accounts for an increasing proportion. Thermal power units generally extract steam from the middle exhaust for heat supply. The temperature and pressure of the extracted steam are relatively high. Using high-quality steam directly for heating is not conducive to the effective use of energy, which reduces energy utilization, resulting in...

AI Technical Summary

Problems solved by technology

Thermal power units generally extract steam from the middle exhaust for heat supply. The temperature and pressure of the extracted steam are relatively high. Using high-quality steam directly for heating is not conducive to the effective use of energy, which reduces energy utilization, resulting in waste of resources and carbon dioxide and pollutants. Increased emissions are not conducive to the cascade utilization of energy

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