Constant-pressure water supply control system with multiple parallel pumps and control method
A control system, constant pressure water supply technology, applied in water supply pipeline systems, water supply devices, water supply devices, etc., can solve the problems of low frequency converter operation efficiency, low system power density, large installation space, etc., to achieve strong configurability , high power density, and the effect of improving reliability
Active Publication Date: 2016-06-15
NINGBO JIURONG ENVIRONMENTAL PROTECTION TECH CO LTD
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[0003] However, the current direct water supply mode of the pump group is a multi-pump parallel constant pressure water supply system, which uses a programmable controller, at least one general-purpose frequency converter and several contactors to realize the frequency conversion operation of one pump, and the power frequency of the other pumps. However, there are too many discrete components in the control system, and the components are too dispersed, requiring a bulky cabinet to place these discrete components; therefore, the cost is too high, the operating efficiency of the frequency converter is low, and the power density of the entire system is too high Low, requires too much space for installation
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] See figure 1 , a multi-pump parallel constant pressure water supply control system, including a central processing module, a communication module connected with the central processing The power supply is used to convert AC power into DC power. The rectifier unit is connected to several power units through a DC bus to provide DC power to the power unit. The power unit is used to connect fluid machinery; the power unit is also connected to the control sub-board , the control sub-board is connected to the central processing module, and the central processing module synchronously and coordinately controls the rectification unit and the power unit through the control sub-board; the rectification unit is also connected to the control power supply unit through the DC bus, and the control power supply unit is connected to the control The sub-bo...
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The invention discloses a constant-pressure water supply control system with multiple parallel pumps and a control method. Due to modular use, a public bus structure is adopted; a direct current bus is used for supplying power; a central processing module controls a daughter board to control a power unit to drive fluid machinery. With the adoption of integrated design, high power density of the system is ensured, and high configurability is achieved.
Description
technical field [0001] The invention relates to the field of fluid control, in particular to a multi-pump parallel constant-pressure water supply control system and a control method. Background technique [0002] Traditionally, there are three ways of water supply: the first is direct water supply for pumps; the second is water supply for water towers and high-level water tanks; the third is water supply for air pressure tanks; and for a long time, people have been committed to the exploration of a better water supply system , The frequency conversion speed regulation water pump system is one of the ideal systems. [0003] However, the current direct water supply mode of the pump group is a multi-pump parallel constant pressure water supply system, which uses a programmable controller, at least one general-purpose frequency converter and several contactors to realize the frequency conversion operation of one pump, and the power frequency of the other pumps. However, there a...
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IPC IPC(8): E03B1/02E03B7/07
CPCE03B1/02E03B7/071E03B7/075
Inventor 迟颂牟介刚
Owner NINGBO JIURONG ENVIRONMENTAL PROTECTION TECH CO LTD