How to check and accept the plate heat exchanger after overhaul

09-06-2021

Plate heat exchangers are commonly used equipment in many industrial sectors such as chemical industry, petroleum, steel, automobiles, and occupy an important position. Especially in chemical production, plate heat exchangers can be widely used as heaters, coolers, condensers, evaporators, reboilers, etc.

It has been widely used due to its high heat transfer coefficient, small pressure drop, compact structure, light weight, small space occupation, convenient area and process combination, strong versatility of parts, wide selection of materials and easy realization of large-scale production. In the fields of food, machinery, metallurgy, petrochemical industry, shipbuilding, etc., some failures may occur during use. After the failures are repaired, the following maintenance is required:

1. Clean the entire equipment system to ensure that the plate heat exchanger pipeline valves are unobstructed.

2. The accessories of the equipment should be complete and intact, the surface switching control system should work intact, and the switching valve action should be flexible and reliable, which meets the needs of skills.

3. Load stress experiment, all policies should meet skill needs.

4. During the inspection, check the plate-type heat exchanger for leaks and abnormal noises. If no leakage, inter-collation of media, and temperature and pressure are within the allowable value, the inspection is qualified, and there is no abnormality after continuous operation for 24 hours, and it can be handed over produce.

Warm reminder: The heat exchanger may not be without problems after maintenance. It needs to be overhauled before use. It can be operated only when there is no problem in the overhaul. This can also avoid unnecessary damage and increase more profits.

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