Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 2, 2025
A safer method is to set the dummy rings in the center of the grooves of the spindle, and then to lower the cover, with less possibility of contact. There being usually plenty of side clearance between the blades of a turbine, it may be deemed quite safe to lock the thrust-block in its position, by screwing the screws G up lightly, and then to turn on steam and begin running slowly.
Interdependence absolute, foreseen, ordained, decreed, To work, ye'll note, at any tilt an' every rate o' speed. Fra' skylight lift to furnace-bars, backed, bolted, braced an' stayed, An' singin' like the Mornin' Stars for joy that they are made; While, out o' touch o' vanity, the sweatin' thrust-block says: "Not unto us the praise, oh man, not unto us the praise!"
In other words, there should be no actual pressure, irrespective of that exerted by the spindle when running, upon the thrust-block rings, due to the separate halves having been nipped too tightly. The results upon a test of considerable friction between the spindle and thrust-rings are obvious.
"If I had, you'd have been scrap-iron by this time. The sea dropped away from under me, and I had nothing to catch on to. That's all." That's all, d'you call it?" said the thrust-block, whose business it is to take the push of the screw; for if a screw had nothing to hold it back it would crawl right into the engine-room. All I ask for is bare justice.
The spare gear of the Haliotis had been unusually complete, and two-and-twenty men, armed with screw-jacks, differential blocks, tackle, vices, and a forge or so, can look Kismet between the eyes without winking. The crew were ordered to replace the holding-down and shaft-bearing bolts, and return the collars of the thrust-block. When they had finished, Mr.
After ascertaining the condition of the dummy rings, attention might next be turned to the thrust-block, which must not on any account be tightened up too much. It is sufficient to say that the actual requirements are such as will enable a very thin film of oil to circulate between each wall of the spindle thrust-grooves and the brass thrust-blocks ring.
The thrust-block had six collars, each faced with brass, and he did not wish to get them heated. All the bearings that supported the fifty feet of screw-shaft as it ran to the stern whispered: "Justice give us justice." "I can only give you what I can get," the screw answered. "Look out! It's coming again!"
The top half of the turbine cylinder having been lifted off, the spindle is set relatively to the bottom half by means of the lower thrust-block screw G. This screw is then locked in position and the top half of the cover then lowered into place. With this method great care must necessarily be exercised when lowering the top cover; otherwise the brass dummy rings may be damaged.
The turbine thrust-block, which maintains the spindle in correct position relatively to the spindle, may also be ground with advantage in a similar manner. Before a test the spindle should be turned slowly around, the feelers being kept in position. By this means any mechanical flaws or irregularities in the groove walls may be detected.
The merest fraction of a turn is enough to break the contact, which is all that is required. In performing this operation it is important, during the axial movements of the spindle, to adjust the halves of the thrust-block so that there can exist no possible play which would leave the spindle free to move axially and probably vibrate badly.
Word Of The Day
Others Looking