Steam Turbines And Turbo Compressors Their Design And Construction
Steam Turbines And Turbo Compressors Their Design And Construction
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, Now, at any given speed the centrifugal force acting on the weights is proportional to the radius of the circle described by them. Hence we can draw in a series of constant-speed lines, such as C and E, showing the relation between the resultant centrifugal force of the mechanism and the radius of the weight circle. Suppose now that the speed is that of the line O E and that the speed is falling ; then at the radius A we see that the centrifugal force and the controlling force are the same, s...o that evidently A is the radius which the weights will assume. Similarly, if the speed is C and rising, the radius of the governor weights will be B.
In calculating the centrifugal force we must take into account all revolving parts of the mechanism which are connected with the governor weights, and reduce these to an equivalent force at the weights. For instance (Fig. 132), if we have a weight W pounds connected by the lever W K B turning about the pin or knife edge K to the governor ball B, and revolving at N revolutions per minute in a circle of radius R feet, the centrifugal force on this weight is _ 4--n 2 iV W R 3, 600 g = 0-000341 N W R .
What to read after Steam Turbines And Turbo Compressors Their Design And Construction?
You can find similar books in the "Read Also" column, or choose other free books by Frank Foster to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
, Now, at any given speed the centrifugal force acting on the weights is proportional to the radius of the circle described by them. Hence we can draw in a series of constant-speed lines, such as C and E, showing the relation between the resultant centrifugal force of the mechanism and the radius of the weight circle. Suppose now that the speed is that of the line O E and that the speed is falling ; then at the radius A we see that the centrifugal force and the controlling force are the same, s...o that evidently A is the radius which the weights will assume. Similarly, if the speed is C and rising, the radius of the governor weights will be B.
In calculating the centrifugal force we must take into account all revolving parts of the mechanism which are connected with the governor weights, and reduce these to an equivalent force at the weights. For instance (Fig. 132), if we have a weight W pounds connected by the lever W K B turning about the pin or knife edge K to the governor ball B, and revolving at N revolutions per minute in a circle of radius R feet, the centrifugal force on this weight is _ 4--n 2 iV W R 3, 600 g = 0-000341 N W R .
What to read after Steam Turbines And Turbo Compressors Their Design And Construction?
You can find similar books in the "Read Also" column, or choose other free books by Frank Foster to read onlineMoreLess
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