Matters needing attention in the process of repairing plate heat exchanger
After the plate heat exchanger has been working for a period of time, inspection, maintenance, and repair will be carried out so that the plate heat exchanger maintains high efficiency. We will follow the editor of this plate heat exchanger manufacturer to understand the attention in the maintenance process of the lower plate heat exchanger matter.
1. Change the cracked or perforated plate, and use the light transmission method to find the crack on the plate.
2. The heat exchanger plate data of the plate heat exchanger are reasonably matched.
3. When the heat exchanger is repaired and assembled, the clamping size should meet the requirements, not as small as possible.
4. Adjust the operating parameters to reach the design conditions.
The flow channel of the stainless steel plate heat exchanger refers to the medium flow channel formed by two adjacent plates in the plate heat exchanger. Under normal circumstances, several flow channels are connected in parallel or in series to form different combinations of cold and hot medium channels.
The process combination form should be calculated based on heat exchange and fluid resistance, and determined under the requirements of process conditions. Try to make the convective heat transfer coefficients in the cold and hot water channels equal or close to each other to obtain the heat transfer effect.
Because the convective heat transfer coefficient on both sides of the heat transfer surface is equal or close to the heat transfer coefficient to obtain a larger value.
Although the flow velocity between the plates of the plate heat exchanger is not equal, the average flow velocity is still used in the calculation of heat exchange and fluid resistance. Because the U-shaped single-flow pipes are fixed on the compression plate, it is convenient to disassemble and assemble.
