Wind-driven combined heat and power generation system with mechanical energy storage function and method

Abstract

The invention discloses a wind-driven combined heat and power generation system with a mechanical energy storage function and a method. The system comprises a fan, wherein the fan is connected with amechanical energy storage device through a transmission belt, the mechanical energy storage device is provided with a transmission shaft, and a first coupler, a generator, a second coupler and a two-stage compressor are coaxially arranged on the transmission shaft; the mechanical energy storage device drives the generator to work through the first coupler and drives the two-stage compressor to work through the second coupler, and the two-stage compressor is connected with a heat supply system part. The method comprises the steps that the generator and the two-stage compressor are connected tothe same transmission shaft through a speed regulating coupler, a combined heat and power generation function is achieved, and multiple energy using scenes are met; and moreover, the energy consumption of the compressor is reduced through two-stage compression and intermediate cooling in the heat supply part, the system efficiency is improved, and the system has high economical efficiency when high-temperature heat is prepared.

Description

technical field [0001] The invention relates to a heat and power cogeneration system and method, in particular to a wind energy driven heat and power cogeneration system with mechanical energy storage and a working method of the system. Background technique [0002] Wind power plays an important role in my country's energy supply. Since wind power uses natural wind as the driving force, the wind power generation system presents the characteristics of intermittent, fluctuating and non-periodic. The instability of natural wind will affect the stability of the power grid and power quality, resulting in a series of technical problems such as unbalanced system energy supply, voltage fluctuations and flicker, and system frequency deviation. [0003] At the same time, my country's winter heating areas mainly include Heilongjiang, Jilin, Liaoning, Xinjiang, Qinghai, Gansu, Ningxia, Inner Mongolia, Hebei, Shanxi, Beijing, Tianjin, northern Shaanxi, northern Shandong, and northern Hen...

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Problems solved by technology

In the existing heating system, there is only cooling / heat output function, lack of power output function, and cannot adapt to the application scenario of combined heat and power generation. In addition, when producing high-temperature heat, the system efficiency is low and the economy is poor

[0004] Most of the winter heating areas mentioned above belong to areas with rich or relatively abundant wind energy resources. Therefore, it is urgent to provide a wind energy heating system with energy storage, which can not only avoid the instability problem of wind power grid connection, but also realize cogeneration of heat and power, effectively Minimize the energy conversion loss in the intermediate conversion process and improve the efficiency of wind energy utilization

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