Intelligent energy-saving variable-frequency water supply system and control method thereof

Abstract

The invention discloses an intelligent energy-saving variable-frequency water supply system and a control method thereof. A water purifying device having a reverse cleaning function is arranged at thefront end of a steady-flow water tank, a steady-flow water supply branch is added to a pump set, and the steady-flow water supply branch, a circulating pipeline, the water purifying device and the steady-flow water tank form a water circulating path. The water purifying device purifies water and improves quality of water entering the steady-flow water tank; the water purifying device, a steady-flow pump branch and the circulating pipeline form a purifying circuit for cleaning the steady-flow water tank, so that manual cleaning frequency of the steady-flow water tank is reduced, and water supply quality of a water supply pipeline network is guaranteed. With application of a stabilized-pressure pump branch, low-frequency running of high-power variable-frequency pump can be avoided, and lossof energy is reduced. Reverse cleaning and circulating cleaning can be carried out synchronously, water supply to the water supply pipeline network can also be achieved during reverse cleaning and circulating cleaning. The intelligent energy-saving variable-frequency water supply system and the control method thereof are easy to implement and promote in application.

Description

technical field [0001] The invention relates to a water supply system, in particular to an intelligent energy-saving frequency conversion water supply system and a control method thereof, belonging to the technical field of frequency conversion and constant pressure equipment. Background technique [0002] The frequency conversion constant pressure water supply system takes the water pressure of the pipe network (or the user's water flow) as the setting parameter, and automatically adjusts the speed of the pump motor through the microcomputer to control the output frequency of the frequency converter, so as to realize the closed-loop adjustment (PID) of the water pressure of the pipe network. The water supply system is automatically stabilized at the set pressure value: when the water consumption increases, the frequency increases, the pump speed increases, and the water supply increases accordingly; when the water consumption decreases, the frequency decreases, the pump spee...

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Problems solved by technology

[0003] In the prior art, multiple sets of high-power frequency conversion pumps are generally used, and the minimum frequency modulation power is still relatively large. When the water supply network uses less water and the pressure relief is small, the high-power frequency conversion pumps are in a low-efficiency operating state. Cause unnecessary power loss and have an impact on the service life of the variable frequency pump

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