Thermal power plant circulating water heat supply system

Abstract

The invention discloses a thermal power plant circulating water heat supply system. The thermal power plant circulating water heat supply system comprises a heat supply network, a water supply main pipeline (11) and a back water main pipeline (12) which are respectively connected with the heat supply network, and a plurality of heating users (5), wherein, each heating user is connected with the water supply main pipeline through a heating water supply branch pipeline (13), and is connected with the back water main pipeline through a heating back water branch pipeline (14), and a flow regulating valve (30) is arranged on the heating back water branch pipeline to regulate heating temperature on the heating users. Steam (dead steam) discharged by a steam turbine is utilized to generate circulating hot water in the heat supply network, the heat supply network is used for directly supplying hot water to heating for the heating users, and therefore energy utilization efficiency of a thermal power plant is effectively improved. In addition, the thermal power plant circulating water heat supply system further comprises a hot water supply network connected with the heat supply network and a refrigeration network, heat supply, hot water supply and refrigeration network are integrated, and therefore the energy utilization of the thermal power plane is maximized, and the purposes of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to the field of energy utilization, in particular to a circulating water heating system of a thermal power plant. Background technique [0002] In the existing urban heating network, the thermal power plant (or heating station) supplies high-temperature hot water at 110-130°C to each user community, and each user community uses the above-mentioned high-temperature heat through the water heater of the local heat exchange station. The water heats the water in the heating system of the user's community to 70-80°C for heating by the user. This heating process is relatively complicated, and the high-temperature water is used to heat the cold water to relatively low-temperature hot water, which will inevitably cause heat loss during the conversion process, which cannot achieve the purpose of energy saving and emission reduction, and also increases the cost of the equipment. [0003] In addition, the low-temperature hot water and hot st...

AI Technical Summary

Problems solved by technology

This heating process is relatively complicated, and the high-temperature water is used to heat the cold water to relatively low-temperature hot water, which will inevitably cause heat loss during the conversion process, which cannot achieve the purpose of energy saving and emission reduction, and also increases the cost of the equipment

[0003] In addition, the low-temperature hot water and hot steam in thermal power plants are directly discharged without recycling, which also causes a great waste of energy.

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