Urban heat supply network intelligent balance control system and method

Abstract

The invention discloses an urban heat supply network intelligent balance control system and method. The system includes a first adjustment component, a second adjustment component, a plate type heat exchange unit, and a control cabinet. A first regulating valve is arranged on a one-time water supply pipeline, a first temperature sensor is arranged on a one-time water return pipeline, a second regulating valve and a second temperature sensor are arranged on a second-time water supply pipeline, a third regulating valve is arranged on a bypass pipeline, each valve is adjusted according to the temperature value, the adjustment of a one-time network and the adjustment of a second-time network are separated, the adjustment of the one-time network is realized by relying on the return water temperature of the one-time network, the adjustment of the second-time network is realized by relying on the second-time supply water temperature, when the requirement of the second-time supply water temperature changes, the hydraulic working conditions of the one-time network is unaffected, stability of the hydraulic working conditions of the one-time network is ensured, decoupling operation of the one-time network and the second-time network is realized, and the problem of hydraulic disorder of the one-time network and the second-time network is solved.

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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