Installation issues of air separation units
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This post was last edited by Ah on 2015-8-12 08:43. I’m seeking advice: During the installation of the unit, what is the relationship between the shaft end expansion of the turbine, the stretching amount of the coupling, the difference between the shaft end distances of the turbine and the air compressor, as well as the length of the coupling in its cold state, and the compression amount of the coupling during normal operation? What are the principles of pre-tensioning during installation and compression during operation for diaphragm couplings?
The manufacturer’s instructions will provide detailed information, and the requirements vary depending on the specific unit; it is recommended that you check the accompanying materials.
A brief explanation will do; there’s too much information
I consulted an experienced technician, who said that it is ideal for the expansion amount at the turbine shaft ends to be equal to the pre-tension of the couplings. In other words, the expansion amount at the turbine shaft end is equal to the pre-tension amount, and it is also equal to the shaft end distance minus the length of the coupling (when installed in a cold state). Please discuss
I’m not sure if it’s correct; I hope teachers with experience in aircraft installation can provide some valuable suggestions
The expansion amount at the turbine shaft end is equal to the pre-tension of the coupling; the expansion amount at the turbine shaft end is also equal to the pre-tension value, which in turn is equal to the distance between the shaft ends minus the length of the coupling (when it is installed in a cold state)