Non-negative-pressure secondary water supply system provided with assistant air pressure water tank for high-position adjustment

Abstract

The invention discloses a non-negative-pressure secondary water supply system provided with an assistant air pressure water tank for high-position adjustment. The non-negative-pressure secondary water supply system is mainly composed of a flow stabilization compensation tank, a negative pressure eliminator, a liquid control transmitter, a water pump, the air pressure water tank, a flow detecting device, a control cabinet and a water using point; the flow stabilization compensation tank is a vertical closed pressure-bearing container, the liquid control transmitter is arranged in the flow stabilization compensation tank so as to be used for monitoring the water level, and the water outlet of the flow stabilization compensation tank is connected with the water pump; and a water outlet pipe is connected to the water using point through the water outlet of the water pump for water supplying, and the air pressure water tank is installed at the highest position, and is a device capable of conducting water amount storage, adjustment and pressure water supply through compressibility of air in the tank. The non-negative-pressure secondary water supply system has the beneficial effects that the assistant air pressure water tank is arranged at the highest position of the non-negative-pressure secondary water supply system for water supply, and the small flow energy saving and investment saving water supply effects are achieved; in addition, pressure fluctuations in the water pump switching process can be effectively eliminated; and the effect on buffering a water hammer is achieved.

Description

technical field [0001] The invention relates to the technical field of secondary water supply, in particular to a non-negative pressure secondary water supply system with an auxiliary air pressure water tank for height adjustment. Background technique [0002] The non-negative pressure secondary water supply can be directly connected in series to the tap water pipe network for pressurized water supply, which has the advantages of significant energy saving, water saving, land saving, capital saving, sanitation, and convenient installation and maintenance. It has gradually occupied the dominant position of the secondary water supply . However, the frequency conversion speed regulation of the water pump for secondary water supply without negative pressure has a certain frequency range. Generally, it is energy-saving between 25% and 100% of the water supply flow of the pump. When it is less than 25%, the working efficiency of the pump will deviate from In the low-efficiency zon...

AI Technical Summary

Problems solved by technology

However, the frequency conversion speed regulation of the water pump for secondary water supply without negative pressure has a certain frequency range. Generally, it is energy-saving between 25% and 100% of the water supply flow of the pump. When it is less than 25%, the working efficiency of the pump will deviate from In the low-efficiency zone, if the water pump runs in the low-efficiency zone for a long time, the frequency conversion speed regulation will not only fail to save energy, but will consume energy

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