Do you have any questions about the technical requirements of the rich gas compressor master diagram?
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1. The minimum value of the gap between the impeller and the baffle is 5.5. This is my understanding.: Is the minimum total deflection of the rotor 5.5, or is the minimum gap between the impeller and the partitions on both sides 5.5 after installing the thrust bearing? 2. When the thrust bearing is in the installation position, the axial movement value on both sides of the rotor is not less than 3.5 on both sides. This is my understanding.: Since the thrust bearing is in the installed position, how can the rotor shift by a few millimeters to both sides? Dear friends, I have been confused for a long time. Can anyone explain it?
5.5 is measured without seals (interstage seals, shaft end seals, etc.), and 3.5 is measured after seals are installed. If a thrust bearing is installed, the clearance of the sunken drum thrust bearing is generally 0.25-0.35.
The total distance between the impeller and the partition should be no less than 5.5. When the thrust bearing is in the installation position, the gap between the impeller and the partition plate is not less than 3.5
The phrase "when the thrust bearing is in the installed position" does not mean that the bearing is actually installed. First, determine the alignment of the impeller outlet and the baffle flow channel through the 5.5mm diameter. After ensuring the best alignment, the position of the thrust plate at this time is the position where the thrust bearing will be installed in the future. The adjustment pad on the thrust bearing should be ground according to this position.
Thanks to all the sea friends for helping with the answers! But I still don’t quite understand, keep paying attention
Do you understand clearly? Can you tell me something?
The partition clearance is the total string capacity without adding thrust bearings.