Secondary water supply variable variable-pressure control system

Abstract

The invention discloses a secondary water supply variable variable-pressure control system which mainly comprises a controller, an anti-interference module, an analog acquisition module, a switching value acquisition module, a state and fault acquisition module, an analog output module, a switching value output module, a fault output module, a monitoring module, a secondary water supply facility and a pipe network tail end pressure detection device. A pressure sensor, a flow sensor, a liquid level sensor, a current sensor, a frequency converter and the pipe network tail end pressure detection device are connected with the corresponding analog acquisition module and the switching value acquisition module through wires respectively, and then are connected with the controller, and the controller is connected with an executing component through the connection with the analog output module, the switching value output module and the fault output module. The secondary water supply variable variable-pressure control system has the advantages of being fast in adjustment, good in accuracy, high in adaptability, complete in function, stable and reliable in working and the like, and the energy-saving effect is obvious.

Description

technical field [0001] The invention relates to the technical field of electrical control, in particular to a secondary water supply variable pressure transformation control system. Background technique [0002] At present, frequency conversion constant pressure control is generally used for secondary water supply, which is characterized by constant water pressure and adjustable pressure, which is beneficial to pump type selection and automatic control, and saves energy. However, frequency conversion and constant pressure cannot well adapt to the pressure change of pipe network resistance with the reduction of water consumption, and there is redundant and ineffective head waste, which cannot maximize energy saving. Secondary water supply variable pressure control is a control method that adaptively changes the outlet water pressure according to the flow-pipe network resistance characteristic curve, so that the outlet water pressure changes with the change of water consumptio...

AI Technical Summary

Problems solved by technology

However, frequency conversion and constant pressure cannot well adapt to the pressure change of pipe network resistance with the reduction of water consumption, and there is redundant and ineffective head waste, which cannot maximize energy saving

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