Drinking water purification pipe network pressure-superposed vector secondary water supply system

Abstract

The invention discloses a drinking water purification pipe network pressure-superposed vector secondary water supply system. The drinking water purification pipe network pressure-superposed vector secondary water supply system is mainly composed of a non-negative-pressure pipe network pressure-superposed flow stabilization compensation device A, a centrifugal pump A, a speed governing permanent magnet motor A, an ultrafiltration membrane purification treatment device, a non-negative-pressure pipe network pressure-superposed flow stabilization compensation device B, an ultraviolet light disinfection device, a centrifugal pump B, a speed governing permanent magnet motor B, a washing pump, a control cabinet and a PC monitoring cabinet. The ultrafiltration membrane purification treatment device is used for filtering out contaminants such as microorganisms, bacteria, rust and the like in water so as to purify the water quality; the control cabinet is used for power distribution and automation control; and the PC monitoring cabinet is further arranged in the manner of matching the control cabinet and is connected and communicated with the control cabinet so as to be used for achieving the functions such as man-machine intelligence, monitoring, displaying and storage. The drinking water purification pipe network pressure-superposed vector secondary water supply system has the beneficial effects that the water quality purification and guaranteeing functions are achieved; in addition, non-negative-pressure direct concatenation water supply is adopted, so that the advantages of saving energy, water, land and investment, being free of pollution and the like are achieved; and permanent magnet motor vector control is adopted, so that the energy-saving effect of secondary water supply is further improved.

Description

technical field [0001] The invention relates to the technical field of secondary water supply, in particular to a drinking water purification pipe network overlapping vector secondary water supply system. Background technique [0002] In the secondary water supply, due to the change of domestic water consumption and the adjustment and control of the water outlet pressure, the water pump is often controlled by frequency conversion, but because the water pump is selected according to the full load of the design working condition, in most of the actual water supply time, The frequency conversion of the water pump handles the operation under the state that deviates from the rated load and the rated speed is large. Under normal circumstances, when the water pump is driven by an ordinary induction motor (such as Y series, Y2 series, Y3 series three-phase asynchronous motor), there is a light load frequency conversion water supply. It will seriously deviate from the high-efficiency...

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Problems solved by technology

[0002] In the secondary water supply, due to the change of domestic water consumption and the adjustment and control of the water outlet pressure, the water pump is often controlled by frequency conversion, but because the water pump is selected according to the full load of the design working condition, in most of the actual water supply time, The frequency conversion of the water pump handles the operation under the state that deviates from the rated load and the rated speed is large. Under normal circumstances, when the water pump is driven by an ordinary induction motor (such as Y series, Y2 series, Y3 series three-phase asynchronous motor), there is a light load frequency conversion water supply. It will seriously deviate from the high-efficiency area and not save energy, because when the motor works at a rated load lower than 60%, its efficiency will drop by more than 15%, and the power factor will drop by more than 30%, which is not conducive to energy saving, but also affects the use life

On the other hand, the secondary water supply is provided by the tap water pipe network, but the long-distance and long-term pipeline transportation of tap water is likely to cause water pollution, affect the smell, taste and color of the water, and may cause the reproduction of pathogenic bacteria, making the The water quality of tap water deteriorates and deteriorates before it reaches the water point, which will cause serious safety hazards to human health when drinking. Therefore, it is very necessary to purify the water quality for the secondary water supply

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