Heat supply network balance adjusting method by coupling thermal power with hydraulic power and heat supply system

Abstract

The invention discloses a heat supply network balance adjusting method by coupling thermal power with hydraulic power and a heat supply system which are used for centralized heat supply, and belongs to the technical field of centralized heat supply. The heat supply system involves a heat supply network initial station, a heat supply network circulating water pump, a heat supply network make-up pump, electric adjusting valves, an internet-of-things flowmeter, an internet-of-things temperature instrument, an internet-of-things pressure instrument and n heat stations. According to the method andsystem, the heat supply parameters of the design working condition are obtained through load prediction, the corresponding electric adjusting valves are adjusted according to the heat supply parameters of the design working condition, and the heat supply parameters of the actual operation working condition are obtained; then the actual values of the thermal power imbalance degree and the hydraulicpower imbalance degree are obtained through calculation, a constraint function is used for distinguishing the balance condition of thermal power and hydraulic power of the heat supply system, and correcting and adjusting are carried put; and therefore, the dynamic balance of heat supply network operation is achieved, the reliability and accuracy of hydraulic power adjustment of the heat supply system are improved, and the practical application value is high.

Description

technical field [0001] The invention relates to the technical field of central heating, in particular to a heat network balance adjustment method coupled with hydraulic power and a heating system. Background technique [0002] The central heating system is one of the city's infrastructure and one of the signs of the city's modernization level. The central heating industry is developing rapidly in my country. By the end of 2016, the area of ​​central heating in my country was about 7 billion square meters, of which the area of ​​central heating with combined heat and power generation was about 3.5 billion square meters. The high-quality development of the central heating system is directly related to the urban development. modernization and the improvement of people's living standards. Ensuring that the heating system is humanized, environmentally friendly, and low-energy operation is a problem that people are always paying attention to. At present, the central heating syste...

AI Technical Summary

Problems solved by technology

The patent application with the application number 201810270082.X is to dynamically adjust and control the water flow of each water supply pipeline to ensure the heat required at the end of each pipeline, so as to achieve the hydraulic dynamic balance of the pipe network, but the thermal balance is not only related to the hydraulic pressure of the pipe network. It is also related to the temperature of supply and return water in the pipe network. This technology still has certain disadvantages in realizing the thermal balance of the pipe network.

The patent application with the application number 201510698402.8 controls and adjusts the hot water flow of each pipeline according to the constant pressure difference between the water supply and return of each pipeline, and then judges the water supply and return temperature difference of each pipeline or the indoor temperature deviation of the heat user. Whether the heat supply of the pipeline meets the requirements, so as to achieve the hydraulic dynamic balance of the pipeline network under the heating requirements of the pipeline, but the central heating system has a huge pipeline network, and the flow adjustment of each pipeline will cause pressure differences in other pipelines Direct impact, this technical method is more complex and difficult to effectively achieve the thermal balance of the heating system in practical applications

The patent application with the application number 201811208634.0 is to control and adjust the hot water flow of each pipeline according to the constant pressure difference between the supply and return water of each pipeline, and to monitor and adjust the opening of the return water valve according to the return water temperature, but similarly, Since the flow adjustment of each pipeline will have a direct impact on the pressure difference of other pipelines, this technical method is also relatively complicated in practical application and it is difficult to effectively achieve the thermal balance of the heating system

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