As core fluid transfer equipment in industrial production, water treatment, energy, and other fields, the safe and stable operation of centrifugal pumps is crucial. During operation, centrifugal pumps involve mechanical rotation, pressure changes, and fluid medium characteristics. Improper operation or lack of maintenance can easily lead to equipment failures, medium leakage, or even safety accidents.
The startup phase is the foundation for the safe operation of centrifugal pumps, and operations must be strictly carried out in accordance with procedures:
1. Check medium and working condition compatibility: Confirm whether the pump model and material meet the characteristics of the conveyed medium. For example, anti-corrosion material pump bodies should be used for conveying acid-base solutions, and the heat resistance level of seals should be checked for conveying high-temperature media to avoid medium leakage or equipment corrosion and rupture caused by material mismatch.
2. Check integrity of mechanical components: Inspect whether core components such as pump shafts, impellers, and seals are intact, whether connecting bolts are tightened, and whether bearing lubrication is sufficient. At the same time, ensure that protective devices such as coupling guards and safety railings are installed in place to prevent personal injury caused by exposed rotating parts.
3. Check pipeline and valve status: Open the inlet valve to ensure the pump cavity is filled with medium to avoid impeller cavitation damage caused by dry running; close the outlet valve to reduce startup load. Check for blockages, leaks, or abnormal deformation in the pipelines. For negative pressure systems, ensure the vacuum degree meets startup requirements to prevent air inhalation from affecting operational stability.
Key parameters must be monitored in real-time during the operation of centrifugal pumps to identify abnormal signals promptly and avoid fault escalation:
1. Pressure parameters: Inlet and outlet pressures should be stable within the design range. If the inlet pressure is too low, severe vibration may occur due to cavitation; a sudden rise in outlet pressure may be caused by pipeline blockage or valve misclosing, requiring immediate investigation to prevent pump body rupture due to overpressure.
2. Temperature parameters: Focus on monitoring bearing temperature and medium temperature. Excessively high bearing temperature may be due to lubrication failure or misalignment of the shafting; abnormal fluctuations in medium temperature require checking the cooling system or heat source impact to avoid seal failure or medium vaporization caused by high temperatures.
3. Vibration and noise: Centrifugal pumps should operate with stable vibration and no sharp abnormal noises during normal operation. If severe vibration or abnormal noise occurs, it may be due to impeller imbalance, bearing wear, or loose foundations, requiring immediate shutdown for inspection to prevent further damage to mechanical components.
Shutdown operations must be standardized and orderly, with equipment cleaning and status recording completed to lay the foundation for the next startup:
1. Clean medium and pipelines: For centrifugal pumps conveying corrosive, easily crystallized, or viscous media, the pump cavity and pipelines should be flushed with clean water or special solvents promptly after shutdown to prevent equipment corrosion and pipeline blockage caused by medium residue. In winter, drain the accumulated liquid in the pump to avoid pump body freezing and cracking.
2. Clear records and maintenance: Record the operation duration, changes in key parameters, and abnormal conditions of this operation to establish an equipment operation file. At the same time, promptly handle minor issues found during operation (such as slight leakage of seals, deterioration of lubricating grease) to avoid small hidden dangers accumulating into major faults.
In case of emergencies such as medium leakage, equipment overload, or fire, the following procedures must be strictly followed:
1. Shutdown immediately: Quickly cut off the power supply of the centrifugal pump and close the inlet and outlet valves to prevent continuous medium leakage or fault escalation.
2. Report promptly: Report the accident situation to on-site safety management personnel or equipment responsible persons, indicating key information such as medium type, leakage amount, and fault location.
3. Scientific disposal: Take corresponding measures according to the accident type. For example, when corrosive media leak, wear protective equipment and then treat with neutralizers; for fire accidents, use corresponding fire extinguishers (water cannot be used to put out oil or electrical fires). Blind disposal without protective measures is strictly prohibited.
In conclusion, the safety management of centrifugal pump systems must run through the entire operation process, from careful inspection before startup to real-time monitoring during operation, and then to standardized maintenance and emergency handling after shutdown. No link can be ignored. As a professional enterprise focusing on the pump industry, TEFFIKO has always integrated safety concepts into its product design and service system, providing users with centrifugal pump equipment with both reliability and safety. Only by strictly implementing safe operation specifications and combining equipment guarantees from high-quality brands such as TEFFIKO can accident risks be minimized, and the stable operation of equipment and the safety of personnel's lives be ensured. Choosing TEFFIKO means choosing a safe and reliable partner.
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