Energy-saving control device and method for closed cooling circulation system

Abstract

The invention discloses an energy-saving control device and method for a closed cooling circulation system. The energy-saving control device comprises a controller, frequency converters, water supply pipe temperature sensors, a water return pipe temperature sensor, an outdoor air temperature and humidity sensor, a water supply pipe pressure sensor, a water return pipe pressure sensor and water pump flowmeters, wherein the frequency converters, the water supply pipe temperature sensors, the water return pipe temperature sensor, the outdoor air temperature and humidity sensor, the water supply pipe pressure sensor, the water return pipe pressure sensor and the water pump flowmeters are connected with the controller. The energy-saving control method includes the steps that (1), the flow of cooling water pumps is adjusted and maintained through PID; (2), the operation number of the cooling water pumps is dynamically adjusted; (3), a cooling water supply temperature setting value is dynamically adjusted, and the rotating speed of a closed type cooling tower fan is controlled. Information of operation parameters of the closed cooling circulation system is collected dynamically, the temperature of the cooling water can be controlled stably, the heat dissipating capacity of heat exchange equipment at the tail end is stable, and energy consumption of the closed cooling circulation system is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of cooling, in particular to an energy-saving control device installed in a closed cooling cycle system. The invention also relates to an energy-saving control method of the device. Background technique [0002] The cooling water circulation system is a common and very important production supporting system, including closed cooling towers, cooling water pumps and terminal heat exchangers connected to each other through pipelines. It has the characteristics of complex systems and many users. In some water-scarce areas, the cooling of steam turbines, bearing bushes, and water-cooled generators usually adopts a closed cooling water circulation system to achieve the dual purposes of equipment cooling and water saving. [0003] At present, the operation control of the closed cooling water circulation system is still basically completed by manual operation. The manual operation of the cooling circulation system...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an energy-saving control device for a closed cooling cycle system, and introduces a method for realizing energy-saving control, so as to solve the problem of high energy consumption in the closed cooling cycle system, unstable cooling water temperature control, and heat dissipation of terminal heat exchange equipment. Unstable technical issues

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