An intelligent balance control system and method for urban heating pipe network

Abstract

The invention discloses an intelligent balance control system and method for an urban heating pipe network. The system includes: a first regulating assembly, a second regulating assembly, a plate heat exchange unit and a control cabinet. By setting the first regulating valve on the primary water supply pipeline, setting the first temperature sensor on the primary return water pipeline, setting the second regulating valve and the second temperature sensor on the secondary water supply pipeline, and setting the third regulating valve on the bypass pipeline Valves, adjust each valve according to the temperature value, separate the adjustment of the primary pipe network from the adjustment of the secondary pipe network, the adjustment of the primary pipe network depends on the return water temperature of the primary pipe network, and the adjustment of the secondary pipe network depends on the secondary water supply Temperature realization, when the water supply temperature demand of the secondary network changes, it will not affect the hydraulic condition of the primary network, ensure the stability of the hydraulic condition of the primary network, realize the decoupling operation of the primary pipe network and the secondary pipe network, and solve the problem of primary network The problem of hydraulic imbalance of pipe network and secondary pipe network.

Description

technical field [0001] The invention relates to the technical field of heat supply pipe network regulation and control, in particular to an intelligent balance regulation system and method for an urban heat supply pipe network. Background technique [0002] The existing urban heating network balance control technology generally includes two types. The first type: the primary network is equipped with an electric two-way regulating valve, and the secondary network is adjusted by variable flow in stages. Calculate the water supply temperature of the secondary network according to the outdoor temperature, and adjust the primary water volume by adjusting the opening of the electric two-way valve of the primary network, so as to achieve the purpose of adjusting the secondary water temperature. This method will lead to frequent adjustment of the primary network and frequent changes in hydraulic conditions, resulting in a Net hydraulic imbalance. The second type: the primary netwo...

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Problems solved by technology

Calculate the water supply temperature of the secondary network according to the outdoor temperature, and adjust the water supply temperature of the secondary network by adjusting the opening of the three-way valve in the primary network. This method only focuses on the temperature of the secondary water supply, which will cause hydraulic imbalance in the primary pipe network

[0003] In the two existing methods, all the secondary water enters the plate heat exchange unit, so that the system resistance loss is large, the power consumption is high, and the loss in the pressure station on the secondary side is relatively large, which may easily cause insufficient pressure for end households and pipe failure. Insufficient water volume in the buildings at the end of the network and the indoor temperature is not up to standard, which makes it impossible to achieve the hydraulic balance control of the primary pipe network and the secondary pipe network

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