Non-negative pressure variable frequency water supply equipment

Abstract

The invention discloses non-negative pressure variable frequency water supply equipment, and belongs to the technical field of water supply equipment. The equipment includes a constant current compensator, a controller, a variable frequency control cabinet, a pressure sensor a, a pressure sensor b and a water pump, wherein the constant current compensator is directly connected in series with a municipal pipe network; the controller is connected with the constant current compensator; the pressure sensor a, the water pump and the variable frequency control cabinet form a closed control system; one end of the closed control system is connected with the municipal pipe network; the closed control system is also connected with a user pipe network via the pressure sensor b. The equipment has the benefits that when the pressure of the municipal pipe network is higher than preset pressure, the water pump is in a stopped state; when the water supply pressure of the pipe network is lower than the preset pressure, the rotation speed of the water pump and the number of the water pumps put into operation are continuously adjusted via the closed control system formed by the pressure sensor a, the water pump and the variable frequency control cabinet, so that the water supply pressure is kept constant and the electric energy is saved to the greatest extent; the constant current compensator starts special operations to inhibit generation of negative pressure, so influences on the municipal pipe network can be avoided.

Description

technical field [0001] The invention relates to a water supply equipment, in particular to a non-negative pressure frequency conversion water supply equipment, which belongs to the technical field of water supply equipment. Background technique [0002] At present, my country's high-rise water supply methods include high-level water tank water supply, air pressure water supply, frequency conversion and speed regulation water supply, etc. However, in the water supply system of high-rise buildings in cities and towns, water storage tanks are generally used to store water, which is easy to cause secondary water pollution. With the development of social economy and technology, a non-negative pressure water supply equipment has appeared in the field of automatic water supply equipment. This equipment is directly connected in series with the municipal pipe network to avoid the problems of water source pollution and water quality standard reduction caused by traditional water suppl...

AI Technical Summary

Problems solved by technology

However, in the water supply system of high-rise buildings in cities and towns, water storage tanks are generally used to store water, which can easily cause secondary water pollution

With the development of social economy and technology, a non-negative pressure water supply equipment has appeared in the field of automatic water supply equipment. This equipment is directly connected in series with the municipal pipe network to avoid the problems of water source pollution and water quality standard reduction caused by traditional water supply systems.

[0003] At present, in the non-negative pressure water supply equipment used, the water pump has been working continuously at a certain speed. Although the continuous water supply demand of users can be guaranteed, the water pump works at a fixed speed for a long time. On the one hand, it wastes electric energy. On the other hand, in some cases It is very likely to generate negative pressure on the municipal pipe network and affect the water use of surrounding users

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