16172 Гидравлика Вариант 42

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Uploaded: 17.03.2013
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Objective 5
For the calibration of pressure gauges on the reference pressure gauge is used press / 1 - cylinder 2 - reference, 3 - check gauges, 4 - spindle 5 - nut /. Determine the number of revolutions n, which is destined to the spindle so that the pressure in the cylinder reached P. Pitch spindle S, the diameter of the sealing piston d, the initial volume of the oil in the cylinder (at atmospheric pressure) V. Coefficient of volumetric compression βR oil.
Target 10
I tank filled with fluid F, which drain in the bottom of the tank has a circular opening, closing valve 3 diameter d and mass m. Determine the force T which must be applied to the rope 2 when it is at an angle α. When the pressure P0 on the liquid surface, the depth of immersion holes h.
Problem 22
The cylinder diameter D and length L is filled with liquid J. The liquid level in the piezometer that is joined to the cylinder, set at a height H from the axis of the cylinder. Determine the strength tensile bolt connections on the cross sections A-A and B-B. What pressure on the cylinder axis of the cylinder bottom part II will not come off from the top I, with the proviso that the bolts in the plane B-B are absent?
Task 25
The vessel is divided by a partition into two halves. The partition has an opening with dimensions axb, which is closed by a lid rotary axis O relative to the coordinate z0. Determine the force R, which must be applied to the lid to hold it in the closed state, provided that the liquid level in the left compartment Jf1 vessel H1, and the pressure P1 on the boundary surface, the liquid level in the right compartment GERD NDP pressure and RPR.
Problem 33
The vessel diameter D F is poured liquid height h = 0.5H (H - height of the vessel).
1) the frequency of rotation of the vessel at which the liquid begins to flow from the vessel;
2) the speed at which the vessel will be half of the original volume;
3) to build pressure diagrams on the side wall and the bottom of the vessel;
4) determining the pressure force acting on the bottom and the side surface of the vessel.


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