Control method and system for hydraulic control butterfly valve of heat supply system based on dcs

By adding a DCS control submodule and a feedback submodule to the heating system, combined with an angular displacement sensor, precise monitoring and multi-level adjustment of the hydraulic butterfly valve are achieved, solving the problem of the hydraulic butterfly valve being susceptible to environmental influences and ensuring the safe operation of the system.

WO2026129584A1PCT designated stage Publication Date: 2026-06-25HUANENG TAIYUAN DONGSHAN GAS TURBINE COGENERATION CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
HUANENG TAIYUAN DONGSHAN GAS TURBINE COGENERATION CO LTD
Filing Date
2025-06-20
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

At present, hydraulic butterfly valves are mainly controlled locally. The electronic components in the control box are affected by ambient temperature and vibration, which can easily cause valve feedback swing or valve actuator malfunction, affecting the safe operation of the heating system.

Method used

Based on DCS control, control submodules for each hydraulic butterfly valve in the heating system are added, and by adding a feedback submodule and adding an angular displacement sensor at the actuator, accurate monitoring and multi-level adjustment of the hydraulic butterfly valves can be achieved, and potential faults can be warned in a timely manner.

Benefits of technology

It achieves precise control of the hydraulic butterfly valve and reduces the risk of failure, ensuring the safe operation of the heating system.

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Abstract

The present application relates to the technical field of hydraulic control butterfly valves, and in particular to a control method and system for a hydraulic control butterfly valve of a heat supply system based on DCS. The method comprises: establishing a plurality of equipment points on the basis of equipment parameters of a heat supply system, and setting a control sub-model for each of the equipment points; setting a primary control strategy for each of the equipment points on the basis of all control sub-models, and on the basis of working condition parameters, determining whether to generate a correction instruction; acquiring a feedback parameter for each of the equipment points, generating an operational risk value for each of the equipment points, and on the basis of all operational risk values, determining whether to generate an early warning instruction; and adding a control sub-module for each hydraulic control butterfly valve in the heat supply system based on DCS control to realize individual control of each hydraulic control butterfly valve, and by adding a feedback sub-module, adding an angular displacement sensor at an actuator to synchronously transmit an actuator displacement signal with an original sensor, thereby realizing precise monitoring of each hydraulic control butterfly valve, providing timely early warning of potential faults, and ensuring safe operation of the system.
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