Unmanned heat exchange unit is a new type of heat exchange station management mode with broad application prospects and development potential. It will provide a strong guarantee for the stable operation of the thermal system and also make a positive contribution to the sustainable development of society. However, the unmanned heat exchange unit is essentially still a heat exchange device, and problems may also occur during operation due to various factors, and these problems involve the operation efficiency and maintenance of the unit and many other aspects. The following is a summary and analysis of these common problems:
1. Efficiency of Operation Issues
Reduced heat transfer capacity: The plates of the plate heat exchanger may become scaled or blocked due to long-term operation, leading to a decrease in heat transfer efficiency.
Solution: Regular cleaning of the plates of the plate heat exchanger to ensure their surface is clean, to improve the heat exchange efficiency.
Pressure drop increase: Similarly, due to plugging or fouling of the plates and aging or damage of the gasket, the fluid passage narrows and the pressure drop increases.
Solution: clean the plates and replace the damaged gaskets to restore the fluid passage.
2. Safety Issues
Leakage issues: It may be caused by excessive working pressure or working temperature, damage or aging of the gasket, deformation of the plates, etc.
Solution: adjust the working pressure and temperature to the specified range, and replace the damaged gasket or plate.
Invisible leaks: These may be caused by cracks or穿孔 in the plates, and are often difficult to detect directly, but can be identified by monitoring fluid mixing.
Solution: Disassemble the plate heat exchanger, inspect and replace the defective plates.
Fire risk: Underground heat exchange stations may have hidden dangers such as cable short circuits, overloading, and insulation aging, which can easily cause fires.
Solution: Strengthen the maintenance and management of cables and their cable ducts, use qualified flame retardant cables, and set up fire doors and fire extinguishing devices.
Flood risk: poor drainage or strict blocking of the underground heat exchange station can easily lead to groundwater seepage and waterlogging in the station.
Solution: Strengthen the construction and maintenance of drainage facilities to ensure that water inside the station can be discharged in time.
3. Maintenance and Care Issues
Cleaning difficulties: The plate structure of the plate heat exchanger is complex, and cleaning is difficult.
Solution: Use cleaning agents and cleaning equipment, operate according to the instructions of the cleaning agent, and ensure the cleaning effect.
Detection difficulties: The internal structure of the heat exchange unit is complex, making it difficult to directly observe its operating condition and detect faults.
Solution: Use detection technology and related equipment, such as ultrasonic testing, infrared thermal imaging, etc., to carry out regular inspection and maintenance of the unit.
Maintenance not in time: The unmanned attended heat exchange unit lacks real-time monitoring and early warning system, making it difficult to detect and handle faults in time.
Solution: Establish a comprehensive monitoring and early warning system, conduct real-time monitoring and data analysis of the unit, and promptly detect and handle faults.
Unmanned heat exchange units may encounter a variety of problems during use, and corresponding measures need to be taken to solve and prevent them. By strengthening maintenance, improving monitoring and early warning systems, and optimizing the layout of communication equipment, the operation efficiency and safety of the unit can be improved, and the possibility of faults can be reduced.