Equipment Type
Fan
Equipment Name
Induced Draft Fan
Faults
Rolling Bearing Abnormality
Early Detection of Induced Draft Fan Rolling Bearing Abnormality
How Wisper Ensured Continuous Operation at an Environmental Factory
Environmental Protection
Introduction
This case study demonstrates how Wisper CMS detected an early-stage fault in a critical induced draft fan's rolling bearing system at an environmental protection factory. This timely diagnosis allowed the maintenance team to take proactive action, ensuring continuous operation and preventing unplanned downtime.
Equipment Overview
Induced draft fans are essential for regulating gas flow and pressure in environmental factories. Typically motor-driven, they connect the motor to the impeller via a shaft. By creating negative pressure (low-pressure zone), they draw in smoke or air. The rotating impeller then accelerates the gas, increasing its speed and dynamic pressure, and discharges it through a stack or other emission equipment. Induced draft fans are critical for adjusting gas flow and emission pressure to meet various industrial needs.
The Challenge
Preventing unplanned downtime for critical equipment in an environmental protection environment is difficult due to:
High-Consequence Failure: Unexpected failure of the induced draft fan can disrupt gas flow regulation and pressure control, potentially impacting emission compliance and continuous operation of the environmental factory.
Critical Component: As a key component for regulating gas flow and emission pressure, the fan must maintain continuous, stable operation to ensure the factory's operational continuity.
Early Detection Requirement: Rolling bearing abnormalities often require early and accurate detection to allow proactive maintenance before catastrophic failure and unplanned downtime occur.
Wisper Solution
The health status of the induced draft fan in the environmental factory was monitored by Wisper CMS. On March 31, 2024, Wisper detected abnormal features on the motor drive end, diagnosing the issue as a rolling bearing abnormality, likely on the outer race of the bearing.
The Wisper CMS immediately triggered a diagnostic report, advising the on-site team to monitor the equipment's running status and score changes and to arrange an inspection as appropriate.
Timeline of Events
The outcome
The maintenance, which included the repair and replacement of the motor drive end bearing and related parts, successfully restored the equipment's health indicator to a healthy running state.
Minimized Downtime:
This proactive intervention minimized downtime risk and ensured the continuous operation of the environmental factory.
Accurate Fault Diagnosis:
The on-site inspection results were fully consistent with the AI diagnosis, confirming the system's accuracy and dependability.
