What is the difference between hydraulic cylinder and pneumatic cyclinder?
What is the Difference between Hydraulic Cylinder and Pneumatic Cylinder?Generally, there are no significant differences between hydraulic and pneumatic cylinders. Pneumatic cylinders use compressed air to create linear force and hydraulic cylinders are used for creating a mechanical force in a linear motion. Pneumatic cylinders respond quickly and hydraulic cylinders are capable of much greater thrust over a generally-longer actuating time. But, pneumatic cylinders are very inexpensive, whereas hydraulic cylinders are not. Here we have mentioned some common differences between pneumatic and hydraulic cylinders.Pneumatic cylinders offer a very clean system which is suitable for food manufacturing processes and other processes which require no risk of contamination. Hydraulic cylinders are generally not used in these environments due to the risk of hydraulic oil leaks from faulty valves, seals or burst hoses.Hydraulic cylinders deal with the fluid media, whereas pneumatic cylinders deal with the air. This difference makes the hydraulic cylinders a better option for the precision motion transmission.Hydraulic cylinders are used in controlling or harnessing power with the use of pressurized fluids, whereas pneumatics studies, how pressurized gases influences mechanical motion or movement.Pneumatic cylinders rarely provide much more than a hundred pounds per square inch of pressure to the piston, whereas hydraulic cylinders are capable of anywhere from 1500 to 10,000 psi, which can be ten to hundred times the force of a pneumatic cylinder.
Why are air compressors used in bore wells? Why are hydraulics not used?
Air Compressors are widely used in bore well applications primarily due to their efficiency and rugged nature. The Air Compressors are very energy efficient. They are used in applications that require operation at heavy load. The construction of these compressors is very strong which makes them perfectly suitable for operating in any rough conditions. Bore well compressor is an application of the Air Compressor induction motor. The compressor pump operates due to the difference in the air pressure between the water columns.Air Compressors pumps require very minimal maintenance. They can be operated without a foot valve. These pumps can be installed very easily. The output of the water of these compressors mainly depends on the water yield.A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy. When a hydraulic pump operates, it creates a vacuum at the pump inlet, which forces liquid from the reservoir into the inlet line to the pump and by mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system. There is less pressure generated as compared to Air compressor. That’s why Air Compressors are used in bore wells.You can get best compressors from Eaton Compressors. They have wide range of products and online platform for buying compressors.
How do we calculate the stroke length of a hydraulic cylinder, given the pressure and inner diameter?
Not possible……..no relationship.A hydraulic cylinder is a mechanical device that’s engineered into a machine or assembly that needs to be moved. So the stroke of a cylinder is determined by the mechanical design. The hydraulic pressure applied over the inner diameter will determine the maximum force that can be developed By the cylinder. The actual force developed is determined by the resistance to movement or “load” applied to the cylinder. The speed at which the cylinder moves is determined by the flow rate of the fluid.
How do you find a brake fluid leak or bad master cylinder?
To find a brake fluid leak... look under the car. Any wet spots? If you find one, get a little on your finger and smell it. No particular smell? Gingerly taste it, then spit it out. Spit again. Once more. If it's brake fluid, your mouth will suddenly have gone dry as if you had tasted alum - because brake fluid is extremely hydrophilic. And... you will have found a leak. If you get under the vehicle (please don't do this unless you have something very solid and thicker than you under the vehicle with you), look directly above the wet spot. You should find the dripping spot, and it'll coincide with a brake line (thin steel tube or pinkie-sized rubber hose). The leak will be either there or a short distance uphill (along the brake line) from there.Not all leaks are in the brake lines (but that's a common place for a leak to develop, as the brake lines rust through); some leaks can be found at the wheel, in the caliper (disk brakes) or the wheel cylinder (drum brakes). In this case, you'll be looking at the inner sidewalls of the tires for wetness that looks as if a dog had lifted his leg on the tire (but there's not enough room under the car for a dog to do that). The wheel with the wet tire sidewall is the wheel with the leaky caliper or wheel cylinder.To identify a bad master cylinder... press the brakes. If the pedal stops, then gradually falls away under your foot... or if it never stops but simply goes to the floor, then you have a leak, a bad master cylinder, or (only if somebody has worked on your brakes recently) a brake system that very badly needs bleeding of air. Check for leaks as above, and check the master cylinder reservoir to see if it's still topped off. If the reservoir is still completely full, don't bother checking for leaks - you don't have one, you have a bad master cylinder. If the reservoir is not full, you very probably have a leak.
How did technological development shape human history from 12,000 bc to 15 century?
what was invented? roads, ( easier transportation of goods + war) deep ocean boats ( new worlds) just off the top of my head
We are planning to make a pneumatic can crusher to crush small tin cans. What specifications should we specify while buying the cylinder?
How much force do you need to crush those cans reliably with no failures? How fast a cycle rate do you require? How much air pressure can you provide? How much airflow can you provide at a given pressure? You need to know those four things before you begin. You can crush a 55-gallon steel drum completely flat with nothing more than human lung power, given a large enough crusher and plenty of time.Start with your available pressure and airflow, determine your required force and cycle rate. Your pressure and required force will give you your cylinder diameter. You’ll need a stroke length at least long enough to permit you to replace a crushed can with an uncrushed one; any more stroke length will cost you cycle time, which will already be limited by your available airflow at full crushing force.
How can we pump water to a height of more than 10.3 meters? How do mine companies do it?
I presume the 10.3 meters is the number you calculated when you converted 1 atmosphere into level of water column. However, 10.3 meters is the limit you can lift using a vacuum. The reason is because your question relies on vacuum pumps using atmospheric pressure to do the heavy lifting. In other words, there is enough pressure from the air around us to push water up a tube by 10.3 meters, as long as there isn't any air pushing down within the tube itself (aka vacuum.)However, there is almost no limit to the height you can pump water using positive pressure. You would be constrained more by the plumbing than by the pumps themselves. You can easily obtain commercially available pumps that can generate enough pressure to pump water up an elevation exceeding 42 kilometers - albeit very slowly and assuming a structure to hold all of your plumbing...However, even with high pressure pumps, many tall (or deep) installations use booster stations. 100 psi (7 bar) is enough to get you over 70 meters, at which case you just install another pump for your next 70 meters. In case you want to figure out how much pressure you need for a given height:P=ρgh, pressure = density x gravity x elevation.