Natural gas and electrical coupling heating system based on heat supply base station

Abstract

The invention discloses a natural gas and electrical coupling heating system based on a heat supply base station. The system is composed of an electric boiler, a heat accumulator, a gas-fired boiler, a pipeline instant electric heater, corresponding heat supply pipeline and corresponding accessory equipment. According to a heat supply mode, at night, the gas-fired boiler and the pipeline instant electric heater are coupled for supplying heat, the electric boiler heats working media in the heat accumulator and a standby gas-fired boiler, and electric energy is stored in the heat accumulator and the standby gas-fired boiler; in the daytime, the electric boiler and the pipeline instant electric heater stop working, energy stored in the working media in the heat accumulator and the standby gas-fired boiler is released to be coupled to the gas-fired boiler for heat supplying; and in extremely frigid weather, the electric boiler and the pipeline instant electric heater can be started in the daytime, and therefore the problem of insufficient gas supply is solved. The advantage of the electricity price in the valley period of electricity is fully used, the consumption of natural gas in the heat supply process is reduced, heat supply cost is lowered, natural gas supply pressure is relieved, and the stability, flexibility and reliability of urban heat supply are improved.

Description

technical field [0001] The invention relates to a combined heating system, in particular to a natural gas and electric coupled heating system based on a heating base station. Background technique [0002] my country's urban environmental problems are mainly caused by coal burning. For example, Beijing's annual coal consumption reached 28 million tons in 2000, accounting for about 75% of the total energy consumption. The air presents a typical soot-type pollution feature. 2 90% of the total comes from coal burning, the coal consumption increases during the heating period, SO 2 The concentration ranges from 30 to 40 μg / m in the non-heating period 3 Soared to 3.5 times the standard, and 2 / 3 of the total suspended particulate matter came from smoke and dust. With the emphasis on environmental protection in our country, the urban fuel structure is dominated by coal and the centralized heating method of thermal power plants and regional boiler rooms has been challenged; high-alt...

AI Technical Summary

Problems solved by technology

However, there are two main constraints on the development of natural gas single heat source heating: the contradiction between natural gas production and demand; and the high price of natural gas, resulting in high heating costs

Secondly, in the extremely cold winter of 2015, the heating temperature put forward higher requirements on the natural gas resource guarantee system, emergency guarantee system, and transmission and distribution peak-shaving capabilities. In 2015, there was a shortage of natural gas heating in Beijing. Therefore, Beijing and related cities began to think about how to establish a combined heating system to solve the current problems of urban heating.

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