How to align the coupling of a large unit when cranking is not possible
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How to perform coupling alignment when large-scale units cannot crank? The weight of the rotor in medium- and large-scale units is relatively heavy. Generally, pressure oil is required to jack up the rotor before cranking and operation can be performed. However, during the installation process, the conditions for pressure jacking are not met. Coupling alignment requires the rotor to rotate. How to perform coupling alignment without lifting the rotor? Generally, it is difficult for people to rotate the rotor, and even if the rotor is rotated, it will have a negative impact on the bearings and bearings. Everyone is welcome to discuss this post. This post was last edited by fwj314159 on 2009-3-5 16:40 ]
You can temporarily inject lubricating oil. After refueling, the cranking will be much lighter. Sometimes you can also use a driving hoisting wire rope to wrap around the cranking. However, this method is not very safe and should be used safely.
No matter how big the unit is, it can be cranked. Large units are usually equipped with a hydraulic and manual turning device. At least one end of the driving end or the driven end can be cranked so that the coupling can be aligned! If you have difficulty turning the car on the spot, you can think of more ways and you will definitely be able to do it!
The motor we have on site weighs more than 80 tons and does not have a turning device. During normal operation, there is lifting oil to lift the rotor. Turning was very easy at that time, but it is not needed now. This post was last edited by fwj314159 on 2009-3-5 20:39 ]
Could it be that the original poster meant to install a generator? Then strive for a disc steam turbine. Generally, steam turbine generator sets are disc steam turbines.
Large-scale units generally have an external oil supply system to supply oil to the bearings. I think that since you have completed the alignment process, the oil supply system should be connected. You can turn on the oil pump, supply lubricant, and turn the chain with pliers or other methods.
I saw that during the installation of the unit, the chemical construction company always drips oil on the tiles and manually turns the car for alignment.
What is the difference between simultaneous disk and disk only?
You can make a special tool for turning, and use lifting to cooperate with turning.
Our gas turbine and load gearbox are aligned without cranking. That means there is no cranking at both ends of the gas turbine and gearbox. We just use the laser alignment instrument.
Haha, the answer above is interesting~~~The laser alignment tool also requires turning!
Yes, our gas turbine and load gearbox are not turned, and the laser alignment tool is directly turned. The data is approved by GE. Maybe they are more confident in their processing accuracy.
Well, if there is a short section between the opposite wheels on both sides, I can only say, GE, Niu 13~~~
The distance between the axle end and the opposite wheel is 1.9 meters
Oil injection and turning, there is no other way to turn the car