Xin Feng Mini-Classroom---Adjusting the Operating Voltage of High-Temperature Stainless Steel Centrifugal Fans

1. Cause: Unreasonable Operating Conditions

High-temperature stainless steel centrifugal fans feature structures and functions designed to prevent system wear. However, improper operation alters the running state of the fan motor, rotor, and blades, disrupts the fan's internal structure, and causes airflow shifts and displacement. This intensifies wear on the fan. Prolonged operation under high loads further accelerates wear on the electric high-temperature stainless steel centrifugal fan.

(2) Excessive Speed

Operating speed is another significant factor contributing to wear in high-temperature stainless steel centrifugal fans. Analysis of fan wear data indicates a direct correlation between wear severity and operating speed. Doubling the operating speed of a high-temperature stainless steel centrifugal fan triples its wear rate, making accelerated wear common. The square of the operating speed directly correlates with wear intensity.

(3) Improper Selection of High-Temperature Stainless Steel Centrifugal Fans in Chemical Plants

Different locations require distinct functional configurations. Discrepancies between design specifications and practical conditions, along with variations in operational requirements, lead to fan selection issues. Overloading and accelerated wear of high-temperature stainless steel centrifugal fans often result from such mismatches.

(4) Wear in dust extraction fans

During chemical plant operation, accumulated dust over time damages bearings, blades, and motors. Due to fine particle sizes and diverse dust types, many particles cannot be fully captured, readily forming abrasions on vulnerable sections of high-temperature stainless steel centrifugal fans.

2. Remedial Measures

First, conduct a general inspection of the centrifugal fan housing for defects. Then examine the induced draft fan motor to verify the oil quality within the bearing housing. Subsequently, check the lubrication system's cold oil cooler for water supply issues and inspect for obstructions in the lubricating oil return line to the tank.

Next, verify the relative positioning of the motor, main unit, and hydraulic coupling. Ensure the hydraulic coupling is positioned lower than both the motor and main unit.

Additionally, inspect the rotating mechanism and clutch of the high-temperature stainless steel centrifugal fan, confirming adequate lubricant levels in the oil tank. Check all fasteners around the induced draft fan—and throughout the entire unit—ensuring every clamping bolt is securely tightened. Second, verify the tightness of connections between the casing, air inlet box, and water valve.

With the gradual advancement of centrifugal fan technology in factories, its applications across various fields have become increasingly widespread, leading to a more comprehensive understanding of this machinery. To maintain optimal gas flow within the centrifugal fan, its operating voltage must be adjusted. To ensure high-pressure centrifugal fans operate at peak performance standards, continuous operation in accordance with technical requirements is essential throughout their service life. How can we achieve greater efficiency in centrifugal fans?

When determining the speed variation category for high-pressure centrifugal fans, pay attention to the critical speed ratio of the equipment. Otherwise, adjusting the speed ratio to its natural frequency may damage the equipment. When selecting a speed variation device, match it as closely as possible to the load characteristics of the centrifugal fan to avoid suboptimal actual operating performance. However, one standard must be adhered to: the speed ratio of the high-pressure centrifugal fan should not be excessively large, yet its minimum speed ratio should not fall below 50% of the rated value. If reduced, cooling for high-temperature stainless steel centrifugal fans should be implemented.

Therefore, if the operating voltage can be adjusted to maintain moderate conditions, the application of factory centrifugal fans can not only achieve environmental protection and energy-saving objectives but also attain better efficiency, ensuring the centrifugal fan achieves the expected practical application results. Practically speaking, to prevent damage during shutdown, residual water in machinery, equipment, and pipelines should be drained when operating temperatures drop below 5°C. This prevents freezing and avoids damaging the centrifugal fan and piping.

If a factory centrifugal fan requires prolonged shutdown, its rolling bearings and other components must have their outer surfaces coated with rust inhibitor to prevent corrosion. After the motor rotor moves, the previously elevated areas should be positioned lower. With such maintenance, the centrifugal fan will retain its original condition when restarted.

Adjusting the operating voltage of high-temperature stainless steel centrifugal fans? The manufacturer has compiled the causes of wear in high-temperature stainless steel centrifugal fans. For inquiries, contact customer service directly.