High-temperature application site


  In mid-June 2014, a wastewater treatment plant in Jiaxing, Zhejiang Province, invited our company to participate in its wastewater upgrading and renovation project. The plant reported that several brands of fans—some of which were even foreign imports—that had been operating normally at the site had frequently burned out after the renovation.

  After a detailed on-site investigation by our company’s technical staff, it was discovered that the water pool at this location had been raised by 3 meters. To prevent an increase in the fan motor power—since an increase in motor power would necessitate the replacement of the entire on-site control cabinet, frequency converter, and motor—we adopted a solution in which the fan frequency was reduced to 15 Hz and the three fans were operated in parallel. Although the motor current after the modification was within the normal range, the fan unit itself experienced excessive temperature rise due to its operation under high pressure and low frequency, ultimately leading to the burnout of the fan bearings. Subsequently, our technical team took full advantage of the HT series high-temperature, high-pressure fan’s dual-purpose air-water cooling feature, which allows for easy retrofitting. We promptly modified the on-site fan locally to operate with water cooling, ensuring its stable and reliable performance and earning high praise from the customer.

 

 High-temperature application site

(As shown in the figure) After the modification, the fan operates normally even under high temperatures as high as 175℃.