Full-automatic variable-frequency constant-pressure water supply system and control method thereof

Abstract

The invention discloses a full-automatic variable-frequency constant-pressure water supply system and a control method thereof. The full-automatic variable-frequency constant-pressure water supply system comprises a pressure tank, a pressure sensor, a flow rate sensor, a control cabinet, a multi-stage variable-frequency water pump set, a low-water level sensor and a pool; the control cabinet is connected with a plurality of parallel multi-stage water pump sets, the water inlet end of the multi-stage variable-frequency water pump set is connected with the pool while the water discharge end is connected with the pressure tank, the pressure tank is connected with the control cabinet through the pressure sensor, the pool is connected with the control cabinet through the water level sensor, and the flow rate sensor is connected with the control cabinet. The control method is capable of regulating the water pump rotating speed in a variable frequency mode and controlling the used water pump number to regulate the pressure at the water use end, the intelligent degree is high, and the energy saving effect is good; the pressure tank is capable of effectively eliminating the pressure fluctuation of the water use end to guarantee a constant water supply pressure, the fault rate of each of a water pump motor and a circuit system is obviously reduced, the requirements of a high-speed high-precision water hydrostatic bearing water supply system are satisfied, and the water resource waste is effectively avoided.

Description

[0001] technical field [0002] The invention relates to a water supply device and a control method thereof, in particular to a fully automatic frequency conversion constant pressure water supply system and a control method thereof. [0003] Background technique [0004] Traditional urban water supply uses electric water pumps to inject water into the water supply pipe network, which not only consumes a lot of energy, but also uses water supply pipes with the same water pressure to supply water to households at different heights, which often results in higher water pressure for low-lying users and high-rise and high-rise residents. No water supply. People try to solve the water problem of highland and high-rise residents by increasing the water pressure. Practice has proved that this method not only wastes energy, shortens the service life of water supply equipment and water supply pipe network, but also cannot provide satisfactory water supply for highland and high-ris...

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Problems solved by technology

[0004] Traditional urban water supply uses electric water pumps to inject water into the water supply pipe network, which not only consumes a lot of energy, but also uses water supply pipes with the same water pressure to supply water to households at different heights, which often results in higher water pressure for low-lying users and high-rise and high-rise residents. no water supply

People try to solve the water problem of highland and high-rise residents by increasing the water pressure. Practice has proved that this method not only wastes energy, shortens the service life of water supply equipment and water supply pipe network, but also cannot provide satisfactory water supply for highland and high-rise residents. pressure

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