Removal of centrifugal compressor coupling
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Due to an inappropriate distance between the shaft ends during assembly, the coupling needs to be disassembled again. However, even though the hydraulic pump has reached a pressure of 2000 kilograms, it is still not possible to disassemble it. I seek guidance from experts on how to proceed with the disassembly. Thank you!
Heat with steam, increase the pressure of the pressure pump, and use percussion as a supplement.
Do not relax the pressure on the pump; heat it using steam or gas welding, and then strike it after a while – there should be no problem
Don’t rush; hold back the pressure for now, increase it a bit in two hours. If it still can’t be reduced, use gas welding to heat it.
The compressor room here is well-ventilated; usually, gas welding and heating are used, which results in high temperatures, while steam is used when lower temperatures are required
Oxyacetylene welding and heating is the right approach, but the temperature must be controlled so as not to be too high, to prevent the coupling from being annealed.
I ask gently: The methods for pressurizing and depressurizing are different for installation and disassembly; I hope nothing was connected incorrectly.
It seems that the oil pressure you’re using isn’t high enough; check the diameter of your shaft. You can check the installation oil pressure; the pressure required for disassembly is even higher. Suggestion: Try shooting at 230MP!
You can replace the high-pressure pump, as its pressure is unstable. You can also adjust the clearance of the fixtures appropriately; you can use the high-pressure and low-pressure pumps in combination. If that doesn’t work, you can try heating it up!
Here, we usually use resistive heating for installing and removing the backrest wheels