A hydraulic balance method of secondary network based on intelligent valve

A technology of hydraulic balance and intelligent valve, which is applied to heating methods, space heating and ventilation details, lighting and heating equipment, etc. It can solve the problems of high resistance of dynamic hydraulic balance valves, increasing the difficulty of hydraulic balance, and difficult to meet the requirements of adjustment accuracy. , to avoid uncertainty and inaccuracy, save labor costs and time costs

Active Publication Date: 2021-12-31
大连海心信息工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A hydraulic balance method of secondary network based on intelligent valve
  • A hydraulic balance method of secondary network based on intelligent valve
  • A hydraulic balance method of secondary network based on intelligent valve

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Embodiment 1

[0075] The main purpose of the invention is to develop an algorithm for automatically performing hydraulic balance of the secondary network on the basis of the application of intelligent valves. The smart valve has the function of self-testing the flow rate of the building pipe section, the inlet and outlet pressure, and the pressure before and after the valve. The monitoring data of the smart valve can be used to automatically calculate the resistance of the valve and the building through an algorithm. Based on the network topology and the principle of graph theory, the pipe network can be established as a directed graph model composed of nodes and pipe segments. Then based on 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 algor...

Embodiment 2

[0148] An algorithm for automatically debugging the hydraulic balance of the secondary heating network is used to balance and adjust the hydraulic imbalance of the secondary heating network. The heating secondary network includes circulating water pumps, water supply and return pipes, smart valves and buildings. Based on the flow and pressure values ​​monitored by the smart valve, the algorithm uses the network topology and graph theory to establish the secondary network as a directed graph model composed of nodes and pipe segments. The working principle of the algorithm mainly includes the following aspects:

[0149] (a). Identification method of building user end resistance number

[0150] Building intelligent valve function and detection parameters: The building intelligent valve is installed on the building (supply) return pipe to detect the pressure of the water supply pipe, the pressure before the valve of the return pipe, and the pressure after the valve of the return ...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D19/10
CPCF24D19/1015
Inventor 孙圣斌王延敏杜瑞东赵岩王天鹏
Owner 大连海心信息工程有限公司
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