Frequency conversion control system for reducing energy consumption of cooling tower fan

• Main Authors: LYU JUNTING, GAO XIANG, ZHANG WENHAO, WANG QIUYAN, XIN YU, ZHANG QIANG
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2024
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses a frequency conversion control system for reducing the energy consumption of a cooling tower fan, which comprises a PLC (Programmable Logic Controller) and a fan discrete frequency conversion module, the PLC and the fan discrete frequency conversion module carry out communication control by adopting serial communication, the PLC is also connected with a water temperature sensor and a time relay, the water temperature sensor is used for detecting the water outlet temperature of a cooling tower, and the time relay is used for controlling the water outlet temperature of the cooling tower. The time relay is used for controlling the signal detection period of the fan discrete frequency conversion module. The system has the advantages of saving a large amount of electric energy, efficiently using the system and prolonging the service life of the fan motor. 本申请公开了一种降低冷却塔风机能耗的变频控制系统，包括PLC和风机离散变频模块，PLC和风机离散变频模块采用串行通信进行通讯控制，PLC还连接有水温传感器和时间继电器，水温传感器用于检测冷却塔出水温度，时间继电器用于风机离散变频模块信号检测周期控制。具有以下优点：可