what is the process of hydraulics?

Question

in industry

Answer 1

A volume of liquid is pressured through a small tube into a larger tube. The force required to push the liquid through the smaller tube is a great deal less than it would be to pump the liquid directly into the larger tube. Because there is a difference in diameters of the tubes, the force is distributed to deal with the piston in smaller amounts.

Answer 2

Hydro is Greek for water or liquid. It's the same principle when you see a flood carry away a house. Hydraulics is liquid and gravity working together. The weight of the water is greater than the house so the house is swept away.

In essence the power from hydraulics mostly comes from a liquid and gravity altough pumps can be used.

The neatest use of hydraulics is the old Roman aquaducts and it makes it easier to understand. The Romans had figured out that if an aquaduct was long enough, it would create enough pressure to deliver water throughout whole cities. So they would skip close by sources of fresh water for one further away.

Since the aquaduct is always at a slight constant angle, even if the water in the aquaduct was four to six inches inches deep (some were two inches deep), because the acquaduct was so long, the amount of force that it would generate was a tremendous amount by the time it reached the end and all they had to do is hook up distribution pipes in an enclosed area where the aquaduct ended and the force was enough to ensure that a city of 300,000 no part of the city couldn't be reached with fresh water.

The aquaduct 30 miles long has hundreds of thousands of gallons of water, even thought it's distributed just a few inches deep, all the gallons of water pushing on each other, so the gallon at the end of the aquaduct had hundred of thousands of gallons of water pushing it. The longer the aquaduct the more weight of the water and the more pressure.

The Romans also used this principle for mining, so instead of having men digging, they would just blast away the top soil and it many case it would even break up rock and crush rock, saving a lot of labor.

In garages you see hydraulic jacks that lift up cars. The end of the pipe is below ground and a heavy liquid, like oil is stored in a tank. The amount of the oil would be several times the weight of a car. So when the valve is opened gravity pulls the oil down, it has nowhere to go but into the pipe, so the pipe and the car on the rack rises.

To get the car back down, there is a second empty tank. The valve to the big tank is slowly closed and a valve is slowly opened slightly to an empty tank. Since the car is now heavier than the oil, the cylinder drops down. The oil from the small tank is then pumped back into the big tank. The tricky part is closing the valve from the big tank and opening the valve to the small tank at the same time just right so the car doesn't crash down on the ground.

By the way, because the Romans could mine much more effectively than their enemies because of hydraulics, the Romans were able to equip more soldiers with steel swords shields, armour for every soldier, not just the kinghts like in the middle ages, and make special spear that when thrown would either hit and kill the enemy, but if the spear missed, when it hit the ground and would bend so the enemy couldn't pick it up throw and throw it back against the Romans. The Romans had so much Iron and steel they could literally throw it away, just becuase they used hydraulics for mining and could complete a mine in a much shorter time than hundreds of slaves carrying the overburden one large reed basket at a time.

Answer 3

you have 2 sizes of cylinders
1 large diameter that moves (raises) a small amount
when the small cylinder raises a longer way
this equivalent to a gear drop