Regarding the issue of mechanical seal cooling
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Why do some mechanical seals require water cooling or oil cooling, while those on some pumps do not have any cooling fluid?
It is related to the sealing medium; those with high temperatures require cooling
There is no cold water because the temperature of the medium is not high; a self-cleaning pipe is used to cool the seal with the medium.
It depends on the sealing type (K-type, single-face, double-face) and the material!
Determine the sealing and flushing scheme based on the properties of the medium. The purpose of sealed flushing is to provide a better environment for the seal. 1. Flush to dissipate heat. The heat generated by the liquid seal must be controlled. This can be achieved by flushing the sealing chamber with liquid to carry away heat and control temperature rise. 2. Lower the liquid temperature. In some cases, the liquid temperature is too high, affecting the sealing performance. In such cases, the temperature must be reduced to improve the properties of the liquid. 3. Change the pressure in the sealing chamber. In some cases, it is necessary to increase or decrease the pressure in the sealing chamber to improve performance. This can be achieved by suppressing evaporation or reducing the thermal load on the seals. 4. Cleaning process liquid. If the process fluid contains inappropriate solid particles or contaminants, it is necessary to clean the fluid inside the sealed chamber. In extreme cases, it may also be necessary to supply a clean liquid from outside the sealing system. 5. Control the atmospheric side of the seal. Since the process liquids are in contact with the atmosphere, they may dry out, crystallize, or coking. It is very important to prevent interaction with the atmosphere in order not to adversely affect the sealing performance. 6. Providing a liquid other than the process fluid in the sealed environment can offer methods for detecting and controlling seal leaks. 1. Capture and/or prevent leaks. Methods to prevent leakage into the atmosphere can be provided. Moreover, they can also provide installation backup for the main seal. This will provide users with the opportunity to operate for a short period of time in the event of a seal failure, so as to shut down the equipment more systematically. 2. Detect leaks. A flushing scheme can be selected to enable the measurement of leakage rates and the monitoring of sealing performance.
Determine the sealing and flushing scheme based on the properties of the medium