Cooling tower integrated energy-saving system based on power synthesizer and control method thereof

An energy-saving system and control method technology, which is applied to water shower coolers, heat exchanger types, direct contact heat exchangers, etc. Icing phenomenon, the effect of reducing extra wear and tear

Inactive Publication Date: 2012-09-26
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI +1
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Problems solved by technology

[0007] The purpose of the present invention is to propose a comprehensive energy-saving system for cooling towers based on a power synthesizer and its control method in view of the problems of poor energy-saving effect and reduced reliability in the process of applying frequency converters or water turbines to existing cooling towers

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  • Cooling tower integrated energy-saving system based on power synthesizer and control method thereof
  • Cooling tower integrated energy-saving system based on power synthesizer and control method thereof
  • Cooling tower integrated energy-saving system based on power synthesizer and control method thereof

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0032] like figure 1 As shown, the comprehensive energy-saving system of cooling tower based on power combiner mainly includes: power combiner 1, fan 2, water turbine 3, first motor 4, first frequency converter 5, water pump 6, second motor 7, second frequency converter 8. Sensor group 9, intelligent controller 10, etc. The sensor group 9 includes a rotational speed sensor 901 , a flow meter 902 , a pressure sensor 903 , a first temperature sensor 904 , a second temperature sensor 905 , and a wet and dry bulb temperature sensor 906 . The rotational speed sensor 901 is located at the output shaft end of the power combiner, the flow meter 902, the pressure sensor 903 and the first temperature sensor 904 are located at the inlet of the circulating cooling water pipeline of the cooling tower, and the second temperature sensor 905 is located at the wa...

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Abstract

The invention provides a cooling tower integrated energy-saving system based on a power synthesizer and a control method thereof. The method comprises the following steps: collecting rotating speed of a fan (2), flow of circulating cooling water, pressure, inlet water temperature and water outlet temperature of a cooling tower, dry and wet bulb temperature of the environment by a sensor group (9)to transmitting to an intelligent controller (10); controlling the working condition of the cooling tower, a water pump (6) and a water turbine (3); if the increment of load causes the reduction of cooling effect of the cooling tower, then increasing output power of a second motor (7) so as to improve the flow and total head of the water pump (6); if environmental change causes the reduction of the cooling effect, then increasing the output power of a first motor (4); if the cooling effect of the cooling tower meets requirements and the cooling tower can be operated in an energy-saving mode, then optimally reducing the output power of the first motor (4); and if the first motor (4) is closed, then gradually reducing the output power of a second motor (7) so as to reduce the flow and the total head of the water pump (6).

Description

technical field [0001] The invention relates to a cooling tower comprehensive energy-saving system and a control method thereof, in particular to a cooling tower comprehensive energy-saving system and a control method based on power synthesis and intelligent control. Background technique [0002] The cooling tower is a very common water resource recycling equipment. Its main function is to exchange the cooling water containing waste heat with the air in the tower to reduce the water temperature to the required temperature for recirculation. At present, the water pump for the cooling tower and the fan of the cooling tower are all driven by electric motors, and there is generally no speed control device installed. Therefore, the working state of the cooling tower is single, and it does not have the ability to automatically adjust with the changes of various parameters. It consumes a lot of electric energy every year and brings serious noise pollution. [0003] In order to red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28C1/00F28F27/00
Inventor 张国强郭润睿史金华
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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