Automatic control spraying and sprinkling system

Abstract

The invention discloses an automatic control spraying system, wherein a frequency converter (5) is electrically connected on a water jet pump (3), a temperature sensing device (6) which is arranged on the surface of a heat exchange unit (1) is electrically connected with a signal transducer (7), and the frequency converter (5) and the signal transducer (7) are electrically connected with a signal processor (8) respectively. A water purifying system is constituted by communicating a suction pump (9), a filter (10), a water purifying device (11) and a water storage tank (12) in turn through a water pipeline (4), wherein a water level inductor (13) which is arranged in the water storage tank (12) is electrically connected with a signal transducer (14), the suction pump (9), the water purifying device (11) and the signal transducer (14) are electrically connected with the signal processor (8) respectively. The invention realizes spraying automatic control, which is safe, reliable, accurate and highly efficient, and has real-time monitoring, and energy is saved and environment is protected.

Description

technical field [0001] The invention belongs to the field of automatic control, and in particular relates to an automatic control spraying system used in electric power, petrochemical and other industries. Background technique [0002] At present, the country is actively implementing the basic national policy of resource conservation and environmental protection, building a low-input, high-output, low-consumption, low-emission, sustainable national economic system and a resource-saving and environment-friendly society. However, in the industrial production of thermal power stations and petrochemical industries, condensing units consume a large amount of water resources, and the drainage temperature of condensed water is much higher than the natural temperature of rivers and lakes. Big threat. The circulating water used for cooling contains a lot of chemicals, which pollutes the ecological environment. The air-cooled unit has significant water-saving properties, the condense...

AI Technical Summary

Problems solved by technology

However, in the industrial production of thermal power stations and petrochemical industries, condensing units consume a large amount of water resources, and the drainage temperature of condensed water is much higher than the natural temperature of rivers and lakes. Big threat, the circulating water used for cooling contains a lot of chemicals, which pollutes the ecological environment a lot

The air-cooled unit has significant water-saving properties, the condensed water is not easy to be polluted, and there is no atmospheric fog, but the economy is not high, and the ability to maintain vacuum is poor, especially in hot summer, when the ambient temperature is high, the vacuum drops, and the back pressure rises. The cooling performance is greatly affected by the environment, the exhaust pressure of the unit changes greatly, and the safety performance is poor. It is easy to cause unit vibration, the output of the unit is limited in summer, and even a crash accident occurs in severe cases.

For the air-cooled islands of most thermal power plants and petrochemical air-cooled islands when the temperature peaks in summer, the ambient air temperature is high, the temperature difference between the atmospheric ambient temperature and the condensing steam temperature becomes smaller, and the heat exchange efficiency of the heat exchange unit decreases and deteriorates, resulting in a vacuum drop, the load cannot be brought up, the back pressure is high, and the safety is poor. The existing engineering technology solves this problem by adding a heat exchange unit to increase the heat exchange surface area, and by using simple manual control to spray water on the surface of the heat exchange unit. Device, manual switch water pump water spraying, such a device has a simple structure and is easy to operate, but the manual control spraying device cannot change according to the change of the ambient temperature and the surface temperature of the heat exchange unit, and cannot spray in a timely manner. Therefore, the spraying The duration of showering, the temperature, the amount of water, the pressure, the degree of atomization, and the effect can only be controlled manually by experience and feeling, and cannot be controlled in real time. There is a great possibility of misoperation, which often causes unsafe factors. Directly or indirectly increase the cost of use, and cause waste of resources and low heat exchange efficiency

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