Thermal power plant delivery multi-pipe network heating and cooling system and operation method

Abstract

The invention discloses a thermal power plant delivery multi-pipe network heating and cooling system and an operation method. The thermal power plant delivery multi-pipe network heating and cooling system comprises a generator set, a water treatment system, a purified water production system, a compressed air system and a refrigerating system, and further comprises a delivery multi-pipe network multi-working medium conveying pipeline; a pipeline in the delivery multi-pipe-network multi-working-medium delivery pipeline is made of any one or combination of high-temperature-resistant and low-temperature-resistant special steel, PVC (polyvinyl chloride) and composite materials, the pipeline is coated with a heat preservation layer, and delivery working media such as hot water, cold water, steam and compressed gas working media are switched. Urban heat energy, cold energy, steam and compressed gas are integrated in one plant area, the utilization efficiency of a thermal generator set is improved, and meanwhile construction of other heat supply plants, steam sources and compressed gas stations can be effectively reduced; centralized energy supply and optimal configuration can be realized; and different media are used in different service cycles, the same pipeline is used for conveying media with different energy, the utilization rate of the pipeline can be increased, and investment and construction resources are reduced.

Description

technical field [0001] The invention belongs to the technical field of regional energy, and in particular relates to a heat supply and cooling system and an operation method of a thermal power plant sending out a multi-pipe network. Background technique [0002] In recent years, the speed of development of the electric power industry and the application of new technologies have greatly exceeded people's expectations. At the end of 2005, the national installed capacity and electricity consumption reached 508.41 million kW and 2474.7 billion kWh respectively, of which thermal power installed capacity was 384.13 million kW, accounting for 75.6% of the total installed capacity. ease. In 2020, the originally planned installed capacity of 900 million kW may be adjusted to 1 billion kW, and the installed capacity of coal power may be adjusted from 580 million kW to 650 million kW. At present, due to the large-scale construction of thermal power plants, the supply of coal, electri...

AI Technical Summary

Problems solved by technology

At the end of 2005, the national installed capacity and electricity consumption reached 508.41 million kW and 2474.7 billion kWh respectively, of which thermal power installed capacity was 384.13 million kW, accounting for 75.6% of the total installed capacity. ease

[0003] Even though many thermal power plants have undergone heating transformation, and southern thermal power plants have even introduced regional cooling pipe networks, there is a huge difference in the heating load or cooling load of these pipe network users in winter and summer cooling load, and many newly built areas Due to the slow development of the cooling load actually used by the buildings in thermal power plant district cooling projects, many projects are planned very grandly, but the actual operating efficiency is very poor, and most projects are operating at a loss

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