Renovation of nitrogen-isolated dual-carbon ring seal
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The blowers for transporting process gases that I sold to customers in the past used double carbon ring seals with nitrogen isolation. The customer believes that during shutdown, the nitrogen supply should not be stopped, as otherwise the gas in the pipes will leak, which is a waste of nitrogen; they want to make modifications. Do any experts have any good suggestions for making changes while maintaining this seal?
When the system is shut down, the pressure of the process gas should decrease; reducing the nitrogen pressure can serve as a means of isolation
I would like to ask if it’s possible to switch to using purified air for isolation