City stairstep constant pressure water supply equipment and method

Abstract

This invention discloses a kind of city cascade constant pressure supplying of water equipment and method. It includes water supply installation, water supply pipe network and constant and pressure device. The water supply device consists of a group of different frequency pump flow (5), its characteristic lies: there is pressure transducer in frequency pumps (5) one-way outlet valve (8) of water pipe, and it connects to the transducer (4) through lines, the transducer connects to controlled switches (6) through cable converter (3) frequency pumps (5) via wire connects to controlled switches, there are additional pressure and constant devices in the water pipes household heights tower. This invention has changed the traditional supply model, and achieved energy, saved money and prevented secondary water pollution.

Description

technical field [0001] The invention relates to a water supply device and method, in particular to an urban cascade constant pressure water supply device and method. Background technique [0002] 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. In order to overcome this problem, people have to build ...

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Problems solved by technology

This not only wastes a lot of energy, increases investment, but also easily causes secondary pollution of water quality, which brings hidden dangers to people's drinking water safety.

In recent years, with the development of science and technology, people have begun to study the method of regulating water supply without tower air pressure to solve the water supply problem of high-rise and high-floor households. The method is: install a pressure tank at the water outlet of the electric water pump. To adjust the water supply, to solve the long-term operation of the water pump, to prolong the service life of the equipment and save energy. Practice has proved that it still has the following defects. If the water pressure of the water supply pipe network is high, the gas space in the air pressure tank will be compressed very much. Small, in order to achieve constant pressure water supply, the adjustment of water supply is very limited. If the water pressure of the water supply pipe network is lower than the air pressure in the tank, the pressure tank will lose the adjustment function. With the development of science and technology, people have begun to use frequency converters to To solve the problems of high cost of air pressure tanks and poor stability of water supply pressure, the method is to use a frequency converter to drive a group of water pumps with equal power to supply water, but the energy saving effect is limited, because using a group of frequency conversion water pumps with equal power to supply water, when the water consumption increases And when the water supply of one water pump is just exceeded, the second water pump must be started, and the speed of one of the water pumps is changed by the frequency converter to realize the change of water supply, which greatly reduces the working efficiency ratio of the frequency conversion water pump, especially when the water consumption is small. The frequency conversion pump runs at a low frequency, and when no one is using water, the frequency conversion pump maintains pressure at a low frequency, which not only does not save energy, but also increases energy consumption

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