Some of our company’s turbine and compressor bearing shells have suffered damage due to embedded temperatures
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As soon as the machine starts running, the embedded thermal resistances of the turbine and compressor bearing shells get damaged. What do you think are the reasons for this? Also, are there any good anti-extrusion measures from the perspective of the manufacturing process of thermal resistors?
It’s probably caused by the thermal deformation of the bearing shells during warm-up; it seems that this issue cannot be resolved from a sensor perspective.
Let’s analyze it from a mechanical perspective, such as changes in the axis position during startup and expansion; relying solely on thermal resistance isn’t very useful.
1. Fixed issue: thermal resistance detachment； 2. Wiring issues: damage occurred during installation or poor sealing at the connection points ； 3. The issue lies with the thermal resistance itself; this is highly unlikely
To put it simply, if the issue lies in the bearing clearance, then it’s a problem with the installation; and if it’s an installation issue, it’s due to the skill level of the maintenance personnel. The person who caused the problem must be the one to fix it.
We have encountered that too; it’s a problem with installation.
We do this often; we’ve never seen any problems with it. If you’re interested, send me some bad images to take a look at – it’s about the thermal resistance of the bearing bushes; it’s quite simple. Let’s meet on QQ email, on the left side
This situation does occur, but it is often impossible to determine what causes it. By the way, which manufacturer’s turbines does your factory use?
The damage I’ve encountered is that the connection parts where the resistors are embedded tend to get damaged, usually due to wear and tear. There are two solutions for this issue: one is to wrap copper wire around the connection parts (this only delays the occurrence of damage but doesn’t solve it completely); the other solution is to change the way the wires are routed by making holes in the tiles and using clamps so that the wires of the thermal resistors don’t come into contact with other parts and get worn. However, this also depends to some extent on the quality of the thermal resistors – some manufacturers do produce high-quality thermal resistors.