Non-negative-pressure automatic variable-frequency water supply device

Abstract

The invention provides a non-negative-pressure automatic variable-frequency water supply device which comprises a tap water pipeline network, a current stabilizing compensation tank, water pumps and a household pipeline network. A water outlet of the tap water pipeline network is connected with a water inlet of the current stabilizing compensation tank, and a water outlet of the current stabilizing compensation tank is connected with the household pipeline network through the water pumps. The water supply device further comprises a controller and a pressure detection device arranged on the household pipeline network and used for detecting real-time water pressure. A pressure threshold is set in the controller and used for being compared with the real-time water pressure. The controller is used for carrying out variable-frequency adjustment on the rotation speed of the water pumps according to the real-time water pressure. A vacuum suppressor is arranged on the upper portion of the current stabilizing compensation tank and used for eliminating negative pressure generated by work of the water pumps. According to the water consumption and the change of the water pressure, the water supply device can automatically change the rotation speed of the water pumps to keep the water pressure constant and meet the water use requirement. The structure is simple energy is saved according to requirements, one water pump is prevented from being in the work state or non-work state for a long time by controlling switches of different water pumps, and the service life of the water pumps is guaranteed.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a non-negative pressure automatic frequency conversion water supply device. Background technique [0002] At present, the general water supply method of high-rise buildings can only supply water to the 3rd-5th floor. At present, the general water supply equipment will produce negative pressure after directly entering the water pipe network, because the flow of the water pump is often greater than the water inlet flow of the water pipe, which will cause the pressure of the pipe network to drop. Peripheral users use water. In order to solve the irrationality of this water supply scheme, the traditional water supply method needs to build a water source tank and a roof water tank on the imported vehicle of the water pump. However, there are two problems in this traditional water supply method. First, the water source tank of the water pump and the roof water tank are both It is easy...

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Problems solved by technology

[0003] In order to solve the problems of poor service life of water pumps, small high-rise water supply and waste of energy in the existing high-rise water supply, the present invention provides a non-negative pressure automatic frequency conversion water supply device, which can automatically control the negative pressure according to the pressure and flow rate, and change the water pump. Speed ​​to achieve the purpose of energy saving

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