Energy-saving infinite constant-pressure water supply method and device

Abstract

The invention discloses an energy-saving infinite constant-pressure water supply method. The method includes the following steps that firstly, a high-lift stabilized-pressure pump and at least one low-lift make-up pump are arranged in a water supply system; secondly, in the water supply process, based on variable-frequency residual quantity pressure stabilization of the stabilized-pressure pump, the make-up pump is adjusted in a spiral wriggling mode to carry out pressure stabilizing and water supply. In the second step, when pressurizing is carried out, the make-up pump operates in a variable-frequency mode through spiral wriggling until the power frequency is reached, and meanwhile the stabilized-pressure pump adjusts the water supply residual quantity at any time in a variable-frequency mode; when pressure reduction is carried out, the make-up pump stops in a variable-frequency mode through spiral wriggling, and the stabilized-pressure pump adjusts the water supply residual quantity at any time in a variable-frequency mode. According to the spiral wriggling mode, the variable-frequency amplitude of the make-up pump within the range of 0-1 / 2 power frequency is larger than the variable-frequency amplitude of the make-up pump within the range of 1 / 2-1 power frequency. By means of the method, water supply pressure is greatly stabilized, and the energy saving effect is fully embodied.

Description

technical field [0001] The invention relates to the field of secondary water supply, in particular to an energy-saving stepless constant pressure water supply method and device based on a secondary water supply system. Background technique [0002] Water is the source of life. With the increasing density of urban living quarters and the increasing number of high-rise buildings, secondary water supply has become one of the main ways of urban water supply. The so-called secondary water supply refers to the form in which units or individuals store and pressurize urban public water supply or self-built water supply, and then supply it to users or for their own use through pipelines. [0003] In the pressurization equipment of existing this water supply system, nothing more than utilizes four technical means to reach pressurization. Among them, the first one is to use the frequency conversion cycle control technology. A frequency converter controls several water pumps with the ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an energy-saving stepless constant pressure water supply method, which mainly solves the problems in the existing water supply system, especially in the secondary water supply system, that the water pressure adjustment is unstable and the energy-saving control is not intelligent enough and accurate.

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