Intelligent valve based secondary network hydraulic equilibrium method

Abstract

The invention discloses an intelligent valve based secondary network hydraulic equilibrium method and belongs to the field of heat-supply engineering. The scheme of the intelligent valve based secondary net hydraulic equilibrium method comprises the following steps: utilizing monitoring data of an intelligent valve to automatically calculate the resistance number of the valve and a building through an algorithm; based on a pipe network topology structure and a graph theory principle, setting up the pipe network into a digraph model composed of nodes and pipe segments; based on the actual operating condition of the pipe network, recording the pipe network operating conditions under multiple working conditions; calculating the actual resistance numbers of all pipe segments of the pipe network; and automatically adjusting the opening degree of the valve through a hydraulic equilibrium algorithm to realize hydraulic equilibrium of a secondary network. The intelligent valve based secondarynetwork hydraulic equilibrium method has the following benefits: the valve opening degree is determined through the resistance number to really reflect the characteristic of the hydraulic condition ofthe pipe network, so that the phenomenon that the flow rate is determined through the opening degree to cause serious hydraulic power distortion is avoided; and the opening degree of the intelligentvalve is automatically calculated, so that the labor cost and time cost for manual secondary network balance debugging are saved, and nondeterminacy and inaccuracy caused by inconsistent personnel quality of manual debugging are also avoided.

Description

technical field [0001] The invention belongs to the field of heating engineering, and in particular relates to an algorithm for automatically performing hydraulic balance of a heating secondary network. Background technique [0002] The hydraulic imbalance of the secondary network is the main cause of user complaints and high energy consumption. At present, the hydraulic balance of the heating secondary network mainly depends on static hydraulic balance valves or dynamic hydraulic balance valves, and the operation and maintenance personnel carry out hydraulic balance debugging in the initial stage of heating. Among them, the static hydraulic balance valve has a large adjustment workload and the adjustment accuracy is difficult to meet the requirements. The dynamic hydraulic balance valve has a large resistance and is easy to block and cannot guarantee the long-term stable operation of the system. Moreover, this method cannot realize dynamic adjustment throughout the heating ...

AI Technical Summary

Problems solved by technology

Among them, the static hydraulic balance valve has a large adjustment workload, and the adjustment accuracy is difficult to meet the requirements. The dynamic hydraulic balance valve has a large resistance, and it is easy to block and cannot guarantee the long-term stable operation of the system. Moreover, this method cannot realize dynamic adjustment throughout the heating period.

With the transformation of old residential areas, changes in system occupancy rate and capacity expansion, etc., the hydraulic conditions of the secondary network have changed intermittently, which has increased the difficulty of hydraulic balance

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