Is it reasonable to require excessive adjustment of the stand-alone control valve at the unit’s lubricating oil station before it can be put into operation?
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Dear friends: As shown in the figure below, the stand-alone control valve of the unit’s lubricating oil station requires excessive adjustment before it can be started up. Is this reasonable? How should this issue be addressed?
This post was last edited by liaifeng on 2020-8-8 at 14:33. Under normal circumstances, the pressure controlled by the self-acting valve on the unit’s lubricating oil is the pressure value set for the lubricating oil pipeline. Additionally, the control value at this point will be indicated on the PID diagram for reference!
Let’s take a look at the previous flowchart, thanks! :)
There is a stand-alone control valve at each of the lubricating oil pump outlet and the main pipeline
Bro, maybe out of a sense of protection, the picture you gave is just a rough outline. Since it is a newly installed unit, carefully examine the accompanying PFD and PID drawings; clear markings should be present on them. If there really isn’t any, you can check the operating instructions; they specify the exact values for both the lubricating oil main line pressure and the lubricating oil pressure. Just adjust according to those given values – you can’t go wrong!
Bro: Companies such as Shen Gu Fuxi Factory and Shanghai Li An offer solutions where there is no need to adjust the self-acting valve from the fuel station to the site. What causes this phenomenon?
When checking the unit configuration, verify whether the set value for lubricating oil pressure specified in the startup conditions is too high; it should be set according to the values given in the technical documents
Main line pressure relief valve? Or a bypass pressure relief valve?
The stand-alone control valves at gas stations should be adjusted before leaving the factory; normally, no further adjustment is required
Check the valve’s specification sheet; it contains the set values, and there should be a range. Within this range, have the instrumentation specialists adjust the control oil pressure according to your unit’s requirements