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Hydraulic balance control method and system for secondary circulation

A technology of hydraulic balance and control method, applied in the field of heating, which can solve the problems of increasing system resistance, inaccurate hydraulic distribution adjustment, and high design cost

Inactive Publication Date: 2014-12-03
HANGZHOU SANHUA RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this scheme uses a balance valve to realize the hydraulic balance of the system, it increases the resistance of the system; at the same time, the adjustment of the balance valve to the hydraulic distribution is not accurate enough
[0005] In addition, the household meter method heat metering system and hydraulic balance system in this scheme are designed separately, and the design cost is relatively high; and two sets of systems are used, and various flow balance valves or pressure difference balance valves are installed, and the initial investment of the system is very large

Method used

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  • Hydraulic balance control method and system for secondary circulation
  • Hydraulic balance control method and system for secondary circulation
  • Hydraulic balance control method and system for secondary circulation

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Embodiment 1

[0032] See figure 1 , which shows a schematic diagram of the principle of the secondary network hydraulic balance control system shown in the first embodiment. In order to clearly show the necessary coordination relationship of the main functional components of the control system, figure 1 Two end users are used as an example to illustrate its control principle. Each end user is connected in parallel with the heat exchange station 1 of the secondary network, and each end user uses a heating terminal 2 for illustration.

[0033] Corresponding to each end user, the secondary network hydraulic balance control system is equipped with a set of components. As shown in the figure, corresponding to each end user, it includes an electric regulating valve 3 and a flow collection device 4; wherein, the electric regulating valve 3 is set on the outlet and return water pipeline of the corresponding end user, and its opening can be adjusted The flow of hot water entering the home of the e...

Embodiment 2

[0059] See Figure 4 , which shows a schematic diagram of the principle of the secondary network hydraulic balance control system shown in the second embodiment. In order to clearly show the necessary coordination relationship of the main functional components of the control system, Figure 4 Only one end user is used as an example to illustrate its control principle, and the end user uses two heating terminals 2 for illustration.

[0060] The difference between the secondary network hydraulic balance control system described in this solution and the first embodiment is that a temperature control valve 6 is added on the basis of the first embodiment. The temperature control valve 6 is set at the heating terminal 2 of the corresponding end user according to the needs of the user, so as to control the flow of the heating terminal 2 in real time; the temperature control valve 6 can be realized by using the existing technology, and will not be described in detail herein.

[0061...

Embodiment 3

[0064] See Figure 5 , which shows a schematic diagram of the principle of the secondary network hydraulic balance control system shown in the third embodiment. In order to clearly show the necessary coordination relationship of the main functional components of the control system, Figure 5 Only one end user is used as an example to illustrate its control principle, and the end user uses two heating terminals 2 for illustration.

[0065] The difference between the secondary network hydraulic balance control system described in this program and the first embodiment is that, on the basis of the first embodiment, a temperature control panel 7 is additionally provided in the corresponding end user room, and the temperature control panel 7 is the same as the existing one. All technologies have the same working principle, and can realize temperature control function and management function (user arrears), and can output mandatory instructions of corresponding end users to the cont...

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Abstract

The invention discloses a hydraulic balance control method and a control system for secondary circulation. The control method comprises the steps that a flow threshold or a temperature difference threshold corresponding to the heating area of a terminal user is preset; a regulating control signal is output to control the home-entry heating flow for the corresponding terminal user according to the difference value of the current flow of the corresponding terminal user and the flow threshold, and the difference value of the current temperature difference and the temperature difference threshold. The home-entry hot water flow can be accurately controlled by optimizing design, so that stable secondary circulation hydraulic balance can be realized, and the system operating resistance generated by hydraulic balance is reduced. According to the control system, for each terminal user, an electric regulating valve is arranged in a home-entry heat supply pipeline or an outlet water return pipeline of the corresponding terminal user; a flow acquisition device is used for acquiring the current flow of the corresponding terminal user; a controller is used for outputting a regulating control signal to the electric regulating valve for controlling the home-entry heat supply flow of the corresponding terminal user according to the difference value of the current flow and the preset flow threshold of the corresponding terminal user.

Description

technical field [0001] The invention relates to the technical field of heating, in particular to a secondary network hydraulic balance control method and system. Background technique [0002] Limited by the heating principle and the current pipe network layout, the inconsistency between the actual flow of each user in the heating system and the design required flow still exists, resulting in high heat consumption, poor indoor thermal comfort, and hydraulic imbalance. cannot be effectively improved. [0003] In order to avoid waste of heating energy consumption and ensure the reliable implementation of other energy-saving measures, it has become an important issue for heating technology companies to comprehensively improve the hydraulic balance of the heating system. In addition to the hydraulic balance of the primary network between the heating station and the heat exchange station, the hydraulic balance of the secondary network between the heat exchange station and the end...

Claims

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Application Information

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IPC IPC(8): F24D19/10
Inventor 尹斌
Owner HANGZHOU SANHUA RES INST CO LTD
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