Central heating system with variable flow rate and household metering and hydraulic balance adjustment method

Abstract

The invention discloses a variable flow and household metering centralized heating system and a hydraulic balance regulating method. The system comprises household metering modules, a water supply temperature measuring module, a water returning temperature measuring module and a heat supply network monitoring and controlling management platform. The household metering modules are arranged at the positions of users, and the heat supply network monitoring and controlling management platform is in communication connection with the household metering modules and a total circulating pump and collects the water supply temperature and the water returning temperature in pipe network systems through the water supply temperature measuring module and the water returning temperature measuring module; and a frequency changer is arranged on the total circulating pump. The water quantity needs of the users are met, and on the premise that the heat comfort requirement of the users is met, the flow is adjusted according to needs, and energy consumption is reduced; and the cost is saved, the reliability and the stability are higher, and the system is more suitable for long-term utilization.

Description

technical field [0001] The invention relates to the field of heating technology systems, in particular to a centralized heating system with variable flow rate and household metering and a hydraulic balance adjustment method. Background technique [0002] Hydraulic imbalance is the most common phenomenon in central heating systems. There are many reasons for the hydraulic imbalance of the system. Design, construction, operation management and other links may lead to hydraulic imbalance. During the design, considering the limitation of water flow rate and pipe diameter in the pipe, the resistance loss along the pipe network system may not be able to achieve balance under the design flow distribution; during the construction process, due to the limitation of the site conditions, it is often not possible to completely follow the design drawing, resulting in It will inevitably lead to a deviation from the design, resulting in hydraulic imbalance; in addition, in the central heati...

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Problems solved by technology

[0006] From the perspective of energy saving in operation, the heating system can obtain better energy-saving effect by using metamorphic adjustment and variable adjustment at the same time, and in practical applications, more and more methods of variable adjustment are used. When dynamic balance valves are applied to variable adjustment systems, There are obvious flaws

[0007] In addition, because the flow balance valve itself cannot provide additional pressure, if the pressure difference of the pipe network is less than or greater than the normal working range of the balance valve, the balance valve will lose its ability to adjust, that is, the application of the balance valve still has a dead zone for hydraulic regulation

[0008] Furthermore, considering that the promotion of household heat metering in central heating systems is an important measure for energy conservation and emission reduction, there are currently different methods to realize heat metering by household, but the devices that implement these methods only consider the metering requirements and do not solve the hydraulic imbalance The problem

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