Does the expander need to be pre-cooled and pressurized before startup?
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This post was last edited by you*n*nyou on 2012-3-14 21:09. Does a compressor need to be pre-cooled or subjected to pressing before it is started? Experts, please give some advice
An expander is not a liquid pump; even if you don’t understand its principle, just follow the instructions for use
All operators need to receive training on the procedures, principles, structure, functions, and operation. One generally has to be able to do it; otherwise, whose machine would they dare let you operate?
Expansion machines vary from one another; you should have your own training for them
Pre-cooling is not required before starting the expander. As long as its startup conditions are met, that’s fine. Start conditions: oil pressure, water pressure, booster pump cooling water, seal air. Check that the return valve of the booster is in the fully open position. Read the instructions carefully! I need to learn more about the key points of operating *expanders!
Posted by the original poster – could you be more specific? Are you referring to a liquid expansion machine?
Gas expanders are inspected according to the criteria of \"water, gas, oil, electricity, and machinery\"; they can be started once the startup conditions are met. I’ve never had contact with liquids; if any of you friends have experience with them, please share your insights. . .
The liquid expander needs to be pre-cooled; you can think of it as a cryopump, which makes it quite simple. It’s a simple device: once the startup conditions are met, pressing a button triggers automatic operation. It usually starts at a certain level of load, that is, it skips the lowest speed setting, and the final load level can be adjusted as desired.
Different machines from different manufacturers have different operating methods. . . .
Gas expansion can be initiated as long as the conditions are met; pre-cooling is not required.
Every family is different; each machine has its own way of operation, and the location of the surge condition zone varies as well. The machine should come with random instructions and an operation manual