GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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20:44 Aug 12, 2006 |
English to Italian translations [PRO] Tech/Engineering - Mechanics / Mech Engineering | |||||||
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| Selected response from: Gian Italy Local time: 02:40 | ||||||
Grading comment
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Summary of answers provided | ||||
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5 | rotazione del rotore |
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rotazione del rotore Explanation: dopo l'arresto della turbina, si continua a far ruotare il rotore con del vapore in modo che la sua temperatura decresca lentamente per evitare che si deformi. Se non si fa ciò si potrebbero avere delle "curvature" (bow)dell'albero vedi sotto: A pulp and paper mill in Sweden uses a 3300 Series Monitoring System to detect plate clash on four double-disk pulp refiners. Recently, a cold water leak from the area between the disks to the rotor behind one of the disks resulted in a rotor bow. The 3300 System detected high vibration on the driver side of the refiner (motor driven) and immediately shut down the machine. Upon investigation, the root cause (the leak) was found and a bowed shaft was surmised. The machine was run at low speed while heating the rotor with steam in order to straighten the bow, and the machine was returned to production within one hour. -------------------------------------------------- Note added at 10 hrs (2006-08-13 06:49:34 GMT) Post-grading -------------------------------------------------- per bow puoi anche dire "flessione" (bending) dell'albero rotore |
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