hydraulic pump

Examples of hydraulic pump in the following topics:

• A case study

  • The items Caterpillar finds suitable for remanufacturing include engines, fuel pumps, injectors, oil coolers, cylinder packs and hydraulic assemblies – each of which must be exhaustively taken apart by hand.

• Architecture during the Six Dynasties Period

  • He invented a hydraulic-powered, mechanical puppet theater designed for Emperor Ming of Wei; square-pallet chain pumps for irrigation of gardens in Luoyang; and the ingenious design of the South Pointing Chariot, a non-magnetic directional compass operated by differential gears.

• Erectile Dysfunction and the Blue Pill

  • A penile erection is the hydraulic effect of blood entering and being retained in sponge-like bodies within the penis.
  • In some cases, treatment can involve prostaglandin tablets in the urethra, injections into the penis, a penile prosthesis, a penis pump, or vascular reconstructive surgery.
  • Additional treatments for ED are varied and include a purpose-designed external vacuum pump used to attain erection, with a separate compression ring fitted to the penis to maintain it.
  • These pumps should be distinguished from other penis pumps (supplied without compression rings) which, rather than being used for temporary treatment of impotence, are claimed to increase penis length if used frequently, or vibrate as an aid to masturbation.

• Reducing the cost of pumps and pumping

  • Up to 20% of the world's motors are used for pumping purposes and most of what they pump is water.
  • Just as with motors, most pumps are bigger and more powerful than they need to be because in many cases production designers did not know what the exact pumping requirements were when the pumping system was being planned.
  • Obviously, this is not an efficient practice – particularly when the annual expense of running an over-sized pump can cost several times more than the price of the pump itself.
  • In some cases, over-sized pumps can be balanced by trimming the impeller or replacing it with one of a smaller diameter (an impeller, which is similar to a propeller, transfers energy from a motor to the fluid being pumped inside a tube or pipe by directing, increasing and pressurizing the fl ow of liquid inside).
  • For a pump operating at less than 10% of its designated flow rate, trimming an impeller can reduce electrical consumption by as much as 25%.

• River Valley Civilizations

  • Most notably, these early civilizations were all hydraulic empires.
  • A hydraulic empire (also known as hydraulic despotism, or water monopoly empire) is a social or governmental structure which maintains power through exclusive control over water access.
  • Most hydraulic empires exist in desert regions, but imperial China also had some such characteristics, due to the exacting needs of rice cultivation.
  • The only hydraulic empire to exist in Africa was under the Ajuran State near the Jubba and Shebelle Rivers in the 15th century CE.
  • Hydraulic empires were usually destroyed by foreign conquerors.

• Pascal's Principle

  • Named after French mathematician Blaise Pascal, who established this important relationship, Pascal's Principle can be used to exploit pressure of a static liquid as a measure of energy per unit volume to perform work in applications such as hydraulic presses.
  • Taking advantage of this phenomenon, hydraulic presses are able to exert a large amount of force requiring a much smaller amount of input force. gives two different types of hydraulic press configurations, the first in which there is no difference in height of the static liquid and the second in which there is a difference in height Δh of the static liquid.
  • Depending on the applied pressure and geometry of the hydraulic press, the magnitude of F2 can be changed.
  • For a hydraulic press, the force multiplication factor is the ratio of the output to the input contact areas.
  • Two different types of hydraulic press configurations, the first in which there is no difference in height of the static liquid and the second in which there is a difference in height Δh of the static liquid.

• Ceramics

  • Slip casting methods provide superior surface quality, density and uniformity than other ceramic casting techniques, such as hydraulic casting.
  • The clay is pressed into the mold by a porous die through which water is pumped at high pressure.

• Hydraulic Jump

  • We neglect the vertical motion of the fluid and assume that all dimensions are large compared with the depth of the fluid --- this is the hydraulic approximation.
  • We can apply the results from gas dynamics to hydraulics as along as the flow is abiabatic --- no shocks.
  • Such discontinuities are known as hydraulic jumps.

• Improving pump efficiency

  • Thinking ahead is probably the best way to avoid the costs associated with buying an over-sized pump.
  • Try to envision the entire pumping system beforehand with an eye toward maximizing efficiency – then seek a pump that is compatible with its operation while thinking about how the entire system can be made more efficient.
  • The result is that less pumping energy is needed, which means that smaller, more economical pumps can be used.
  • Schilham's second money-saving idea was to lay out the pipes first and install the pumps afterward – which is exactly the reverse of how most people construct a pumping system.
  • Furthermore, by using plastic or epoxy-coated steel pipes, friction can be reduced by another 40%, resulting in a proportionate savings in pumping expenses that can eliminate up to 95% of the costs of pumping.

• Sodium Pumps as an Alternative to Proton Pumps

  • Na+/K+-ATPase (Sodium-potassium adenosine triphosphatase, also known as Na+/K+ pump, sodium-potassium pump, or sodium pump) is an antiporter enzyme (EC 3.6.3.9) (an electrogenic transmembrane ATPase) located in the plasma membrane of all animal cells.
  • It is now known that the carrier is an ATP-ase and that it pumps three sodium ions out of the cell for every two potassium ions pumped in.
  • The pump, while binding ATP, binds 3 intracellular Na+ ions.
  • The phosphorylated form of the pump has a low affinity for Na+ ions, so they are released.The pump binds 2 extracellular K+ ions.
  • Describe the mechanisms of sodium pumps and its role as an alternative proton pump