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Oil cooler cleaning

Views:1     Author:Site Editor     Publish Time: 2021-01-20      Origin:Site

Oil cooler is an oil cooling device commonly used in hydraulic systems and lubrication systems.


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The use of this equipment can achieve heat exchange between two fluid media with a certain temperature difference, thereby achieving the purpose of reducing the oil temperature and ensuring the normal operation of the system.


Precautions for plate cleaning


⑴Do not use hydrochloric acid or water with chloride concentration exceeding 300×10-6 to wash stainless steel plates.


⑵Do not use phosphoric acid or sulfuric acidto clean the titanium plate.


⑶ Normally the concentration of the cleaning solution should be below 4% (except for special cases), and the temperature of the cleaning solutionshould not exceed 60°C.


Backwash and mesh filter


Generally, when there are fibrous and large particles in the heat exchanger, the effect of backwashing the device is quite obvious. One of the following two ways can achieve the purpose of backwashing:


⑴ Flush the device with clean water in the opposite direction of normal operation.


⑵ Lay out the pipeline and set up valves on the pipeline to operate in reverse mode on the product side within a fixed time. This special mode is particularly suitable for heat exchangers where the product is steam.


⑶ When the water stream contains a considerable amount of solid or fibrous material, it is recommended to install a mesh filter on the water supply pipeline in front of the heat exchanger. This can reduce the number of backwashes.


Clean-in-place (CIP)


In-situ cleaning is the preferred way to clean the plates, especially when the process liquid in the SUPERCHANGER device is corrosive. After completing a work cycle, the remaining liquid should be drained through the drain pipe to avoid corrosion of the plates.

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When cleaning the heat exchanger, follow the steps below:


⑴Drain the liquid in the inlet and outlet pipe ports on both sides of the heat exchanger. If it cannot be drained, water can be used to force the process liquid out.


⑵ Use warm water of about 43℃ to rinse from both sides of the heat exchanger until the water flowing out becomes clear and contains no process fluid.


⑶ Drain the flushing water out of the heat exchanger and connect it to the local cleaning pump.


⑷To clean thoroughly, the in-situ cleaning solutionmust flow from the bottom to the top to ensure that all the plate surfaces are wetted with the cleaning solution.


When cleaning the multi-process heat exchanger, it is necessary to make the cleaning liquid flow in the reverse direction for at least 12 cleaning time to ensure that all the surface of the multi-process plate is wet.


⑸ After cleaning with spot cleaning solution, rinse thoroughly with clean water.


If the heat exchanger uses salt water as the cooling medium, the salt water should be drained as far as possible before the cleaning operation is carried out, and then the heat exchanger should be rinsed with cold water.


If all the side bottoms of the brine are flushed before cleaning both sides of the heat exchanger with hot in-situ cleaning solution, the corrosion to the equipment will be minimal.


⑹The best cleaning plan is to usein-situ cleaning solution to flush at the maximum flow rate, or to clean in-situ with the maximum flow rate allowed by the nozzle diameter (the maximum flow rate allowed for a nozzle diameter of 2 inches is 260 GPM, and the maximum flow rate allowed for a nozzle diameter of 1 inch is 67 GPM. ).


If you can perform in-situ cleaning operations in accordance with a regular cleaning plan before thoroughly contaminating, the cleaning effect will be better.


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