Turbine axial force
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This post was last edited by nanlinredong on 2011-11-23 at 14:38. Does the force acting on the turbine shaft move from the high-pressure side to the low-pressure side, or from the low-pressure side to the high-pressure side? Where are the position of the balance disk, thrust disk, and displacement disk respectively? Is the balance disc on the high-pressure side? Is the thrust disc the same? If looking along the axis from the high-pressure side to the low-pressure side, how are the positions of the three discs generally arranged? Similarly, where is the thrust bearing?
The axial force acts from the high-pressure side to the low-pressure side. The balance disk is on the high-pressure side, at the outer end of the first-stage blades, while the thrust disk is located outside the balance disk. The thrust bearing is located at the thrust disc.
Reply to 2# wx2860: It means that during operation the shaft tends to move towards the low-pressure side. Are the thrust plate and the push plate the same thing? The thrust bearing is located at the thrust disc; in other words, it’s between the balance disc and the thrust disc~~
This post was last edited by 565026033 on 2011-11-21 at 23:27. The thrust disc and the thrust plate are the same thing. The thrust bearings of a turbine are divided into primary thrust bearings and secondary thrust bearings, which are located on both sides of the thrust disc, right next to it. To explain further, there are two types of thrust pads: in one type, the primary and secondary thrust pads are not together, with the thrust disc in between; in the other type, the primary and secondary thrust pads share one pad seat, with positioning being achieved by the thrust discs on both sides
The axial force acts from the high-pressure side to the low-pressure side. Thrust bearings are divided into primary thrust bearings and secondary thrust bearings; generally, the primary thrust bearings are located on the inside while the secondary ones are on the outside. Next to them are the tachometer disc and the thrust disc. The thrust disc and the balance disc are probably the same thing, and they are located on the high-pressure side. You can search for more details online at http://bbs.hcbbs.com/thread-901572-1-1.html; there’s a source with even more detailed information, but I can’t find it right now
It is recommended that the original poster find a turbine diagram and consult someone who knows the subject; by referring to the diagram, the poster will understand everything very clearly
The balance disc and the thrust disc are not the same thing; the balance disc, also known as the balance piston, balances most of the axial force, with the remaining portion being taken care of by the thrust bearings.
Actually, the balance piston is a bit similar to the balance disk in multi-stage pumps, hehe
I’ve learned it; if the thrust bearings are also indicated above, that would be fine
Reply to 6# wsymqg: Well, the manufacturer hasn’t provided the turbine drawings yet; I’m trying to learn on my own at the moment, and it’s a bit difficult – the diagrams don’t match the actual equipment, haha……