Are you sure you’ll turn the crank?
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What is the purpose of turning the shaft, and what is the correct way to do it? Can someone please explain?
Prevent temporary bending caused by self-weight when the shaft remains stationary for a long time. The posture is 540 every 7 days. When a steam turbine is shut down, the turning gear motor also needs to be started to prevent thermal bending, either every 10 hours or when the outlet temperature is below 200 degrees Celsius; either of these two conditions being met is sufficient.
Sure, sure, I’ll give you a pass
This post was last edited by ylb913 on 2016-12-24 at 10:16. We rotate the spare pump disc 180 degrees every day; it’s red and white in color, and rotation is done on alternate days. There are a few occasions at the end of months when the length of those months is different that the disc doesn’t need to be rotated. Strictly speaking, in addition to avoiding shaft bending, it is also done for even lubrication; I have seen requirements that stipulate rotating it once first, and then setting it at a certain angle based on whether it is an odd or even day. ——Before starting the standby pump, the pump shaft must certainly be rotated at least one full circle; this is done, on the one hand, to check for any signs of jamming, and on the other hand, to ensure even lubrication. ——It’s not practical to require someone to turn the pump’s crankshaft daily in the supply warehouse; this is a serious problem. ——This also includes pumps that are delivered before the installation of the equipment; it often happens that they remain unopened for days, and in some cases they sit on site for months without any opportunity for installation, nor is anyone there to turn them.
Operate the winch at the designated time each week
What kind of equipment is this? It’s a large-scale unit, right?