Hydraulic equilibrium control system of secondary network of centralized heat-supply network and control method thereof

Abstract

The invention relates to a hydraulic equilibrium control system of a secondary network of a centralized heat-supply network and a control method thereof. The hydraulic equilibrium control system of the secondary network of the centralized heat-supply network is characterized by comprising a long-distance central computer control unit and a plurality of horizontal hydraulic disorder control units corresponding to buildings. Each control unit comprises a GPRS (General Packet Radio Service) communicator at the entrance of the corresponding building, a local measurement and control terminal, an electric adjusting valve on a building water supply pipe, a water return temperature sensor on a building water return pipe, and an operated type differential pressure control valve of the building; and an operated type differential pressure control valve of a user is arranged on a user water return pipe inside the building. The control method comprises the following steps of: A, manually and initially adjusting horizontal hydraulic disorder; B, automatically and adaptively adjusting the horizontal hydraulic disorder: calculating a set value t of a building water return temperature by the central computer control unit according to an outdoor temperature, and collecting a building water return temperature T and openness data of an electric adjusting valve, and calculating a deviation value deltaT by each measurement and control terminal, so as to control openness of the electric adjusting valve; and C, manually adjusting vertical hydraulic disorder. The hydraulic equilibrium control system of the secondary network of the centralized heat-supply network and the control method thereof provided by the invention have the advantages that uniform heat supply is ensured, energy is saved, and consumption is reduced.

Description

technical field [0001] The invention relates to a central heating pipe network control system, in particular to a central heating pipe network secondary network hydraulic balance control system and a control method thereof. Background technique [0002] With the advancement of social technology and economic development, the central heating pipe network has developed rapidly, providing a warm and comfortable living environment for the majority of heating users, but there are still adjustments in the operation of the heating system, especially in the hydraulic balance adjustment of the secondary network The problem of not being in place will directly affect the heating effect of users. The adjustment of the hydraulic balance includes the adjustment of the horizontal hydraulic imbalance and the adjustment of the vertical hydraulic imbalance. The horizontal hydraulic imbalance refers to the hydraulic imbalance between the buildings, and the vertical hydraulic imbalance refers to...

AI Technical Summary

Problems solved by technology

At present, the adjustment of the hydraulic balance of the secondary network mainly relies on the installation of self-operated flow limiting valves at buildings and users to limit the maximum heat consumption of users. As a result, only the preliminary adjustment of the hydraulic balance of the secondary network can be realized.

[0003] It is impossible to make adaptive adjustments to adapt to changes in actual operating conditions, and cannot meet the requirements of uniform heating

[0004] Especially at present, with the country's promotion of heat metering methods for heating systems, the self-operated flow limiting valve based on flow limitation has lost its practicability and cannot meet the heating demand; in addition, in order to achieve energy saving and consumption reduction, avoid Due to the energy loss caused by the difference in heat supply to users, it is urgent to solve the effective adjustment of the hydraulic balance of the secondary network

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