What are the benefits of the mechanical seal modification scheme for gasoline pumps?
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To prevent direct environmental contamination, the mechanical seal used in scheme 11 was replaced with that of scheme 11+52. What other advantages could there be? Like cooling? Reduce the pressure in the sealing chamber? Rinse?
Add an additional seal; in the event that the primary seal fails, gasoline will flow into the isolation fluid tank and then to the flare line for flaring. The isolation fluid tank should be equipped with level alarms and pressure alarms. Alternatively, the 11+72+75 approach can be used, employing a dry gas seal
The 3rd floor is the correct answer; 11 becomes 11+52, which is like having an extra layer of protection, haha
An additional seal has been added; in the event of a leak in the medium side seal, the leakage will first occur into the white oil, and then be discharged through the flare line, thereby preventing it from escaping into the atmosphere. Additionally, the white oil serves to cool the medium side seal