Issues in the dry gas seal test records for the rich gas compressor?
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In the dry gas seal test record, at the marked position: for the parameter of rotor axial play, the value is 2.5 on the thrust bearing side and 2.5 on the support side. What does this mean? Could fellow sailors help answer this?
Can it be understood as the values for horizontal and vertical movement?
I understand it the same way; I hope experts can provide an answer
There’s the name of the appraiser on it, right? You can also ask the experts at your workplace for an answer!
The axial movement amount resulting from the thrust of the rotor’s axial displacement.
No, the total axial movement of the rotor without the thrust bearings installed is 5 mm; once the main thrust bearings are in place, this movement reduces to 2.5 mm. After installing the secondary thrust bearings as well, the total axial movement of the rotor remains 2.5 mm.
With the main and auxiliary thrust bearings installed, can the rotor’s runout still be as large as 2.5 mm? It’s impossible for a regular centrifuge to have such a large shaft runout
You’re right; the typical thrust clearance is between 0.5 and 0.75 mm. What he means is that the rotor needs to be pushed to the middle position so that a dry gas seal can be installed.
With reference to your opinion, I’ve also thought about it – the rotor should be in its working position before dry gas is introduced, otherwise it’s possible to damage the dry gas seal. Thank you for your advice!
Visual inspection shows that the clearance on both sides is 2.5 mm, indicating that the rotor is in the middle position, which is also its operating position; at this point, the dry gas seal should be installed.