In order to ensure the good condition and safety of the plate-type heat exchanger unit during storage, corresponding measures need to be taken. So, what specific measures should be taken? The following will explain this issue.
1. Close the valve step by step and reduce the pressure difference
Close the valve slowly: First, slowly close the inlet valve of the low-temperature medium of the plate-type heat exchanger, while ensuring that the pressure on the low-pressure side is not too low. Then close the inlet valve of the high-temperature medium to reduce the pressure difference inside the equipment. After closing the inlet valve, then close the outlet valve of the low-temperature medium and the high-temperature medium in turn.
Pay attention to pressure changes: During the process of closing the valve, closely monitor the pressure changes inside the equipment to ensure a smooth and slow operation, avoiding any impact on the equipment.
2. Cooling and Disassembly
Cool to room temperature: After closing all valves, wait for the plate-type heat exchanger to cool to room temperature. This is to prevent the sealing gasket from loosening or damaging due to temperature differences during disassembly.
Remove the clamping bolts: When the equipment has cooled to room temperature, remove the clamping bolts symmetrically and alternately. This ensures a uniform and stable removal process, avoiding unnecessary damage to the equipment.
Remove the connecting short pipe and the movable end: After removing the clamping bolts, remove the connecting short pipe and move the movable end away to allow for subsequent maintenance and care work.
3. Special handling for long-term storage
Loosen the clamping bolts: If the plate-type heat exchanger unit is to be stored for a long time, the clamping bolts can be loosened slightly until the seal gasket cannot slide out automatically. This prevents the seal gasket from deformation due to long-term compression.
Medium drainage: When the equipment is not in use or the ambient temperature is too low in winter, it is necessary to drain the medium in the equipment to prevent it from freezing and cracking.
During the parking period of the plate heat exchanger unit, in addition to the three aspects mentioned above, many small details also need to be paid attention to, such as cutting off all power supplies of the plate heat exchanger unit, regularly checking the integrity of the sealing gaskets, the tightness of the bolts, and the cleanliness of the equipment, recording various parameters and state changes of the equipment, etc.