Due to corrosion, impact, vibration, stress and other reasons, the heat exchange tubes of the heat exchange unit may be damaged during maintenance.This damage mainly occurs on the tube, especially the connection between the tube and the tube sheet.Once the pipe is perforated or ruptured, the media will cross each other, the product will be contaminated, and normal operation will be disrupted.Depending on the specific situation, repairs can be carried out by patching leaks, blocking pipes or replacing pipes.
Although it is a simple method to repair and treat the blockage of heat exchange tubes in heat exchange units,However, if there are too many pipe blockages, the heat transfer efficiency will be reduced.Replacing the pipes will take a long time and be more costly.Technicians have invented a new method of repairing leaks. It does not require replacing or blocking the pipes, but instead fixes a sleeve at the place where the pipe is perforated or cracked.
The heat exchange medium can continue to flow along the pipe through the sleeve.The original leaking areas are blocked by fixed sleeves. This ensures that the maintenance can proceed normally. If the maintenance is normal, the next step is how to clean it.
Operators engaged in cleaning the heat exchange unit should wear work clothes that are resistant to acid and alkali corrosion.Wear labor protection equipment, especially protect your eyes, hands and feet to prevent splashing when adding chemicals.A cordon should be set up at the cleaning site and someone should be in charge to prevent others from accidentally entering and causing accidents.
Before chemical cleaning, check the circulation system consisting of cleaning equipment, cleaning tank, conveying pipeline, and heat exchange unit to be cleaned.Make sure this system is isolated from other equipment to prevent the cleaning fluid from entering other equipment or affecting others.
When the clean water is circulating, there must be leakage to prevent the delivery pipe from being blocked and the liquid from leaking.Waste liquid must be treated as necessary before it can be discharged.It is not allowed to dump or discharge waste randomly to avoid accidents such as corrosion of sewer pipes in the production area.
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