A hydraulic balance method of secondary network based on intelligent valve

Abstract

The invention discloses a hydraulic balance method of a secondary network based on an intelligent valve, which belongs to the field of heating engineering. The scheme is as follows: using the monitoring data of the smart valve, the valve and building resistance can be automatically calculated through the algorithm, and the pipeline network can be established as a directed graph model composed of nodes and pipe sections based on the topology The actual operating conditions of the pipeline network, record the operating conditions of the pipeline network under multiple working conditions, calculate the actual resistance of each pipe section of the pipeline network, and automatically adjust the valve opening through the hydraulic balance algorithm to achieve the hydraulic balance of the secondary network. Beneficial effects: the invention determines the opening of the valve through the resistance number, truly reflects the characteristics of the hydraulic working conditions of the pipe network, and avoids the phenomenon of serious hydraulic distortion caused by the flow rate determined by the opening; by automatically calculating the opening of the intelligent valve, it saves manual work. The secondary network balances the labor cost and time cost of debugging, and at the same time avoids the uncertainty and inaccuracy caused by manual debugging due to the uneven quality of personnel.

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

Images