Tech@Edu

Hydraulic Ram The hydraulic ram is a pump which raises water without any external power for its operation. When large quantity of water is available at a small height, a small quantity of water can be raised to a greater height with the help of hydraulic ram. History 1772-   John Whitehurst is credited with inventing a non-self-acting ram pump in England. 1796-  A Frenchman, Joseph Michael Montgolfier, had added a valve, which made the device self-acting, making the ram pump almost a perpetual motion machine when water supplies were steady. 1809- T he first American patent was issued to J. Cerneau and S.S. Hallet in New York, but it wasn't until 1832 that information began spreading across the eastern states about the "simple pump that pushes water uphill using energy from falling water." 1843- H.H. Strawbridge of Louisiana claimed to be the first to put an American made model into use. His first ram, built entirely of wood, exploded, prompt...

Differential Accumulator "It’s a device in which the liquid is stored at a high pressure by a comparatively small load on the ram." Parts of Differential Accumulator 1. Fixed Vertical Cylinder 2. Inverted Moving Cylinder 3. Weight 4. Brass Bush 5. Inlet pump 6. Pipes Construction of Differential Accumulator It’s consists of a fixed vertical cylinder of small diameter. The fixed vertical cylinder is surrounded by closely fitting brass bush, which is surrounded by an inverted moving cylinder, having circular projected collar at the base on which weights are placed. Working of Differential Accumulator The liquid from the pump is supplied to the fixed vertical cylinder. The liquid move up through the small diameter of fixed vertical cylinder & then enter the inverted cylinder. The water exerts an upward pressure force on the internal annular area of the inverted moving cylinder, which is loaded at the base. The internal annular area of ...

Hydraulic Accumulator The hydraulic accumulator is a device used for storing the energy of the liquid in the form of pressure energy, which may be supplied for any sudden or intermittent requirement. Or   A hydraulic accumulator is a pressure storage reservoir in which a non-compressible hydraulic fluid is held under the pressure that is applied by an external source of mechanical engineering. The external source can be an engine, a spring, a raised weight or a compressed gas. In the case of hydraulic lift or the hydraulic crane, a large amount of energy required when lift or crane is moving upward. This energy is supplied from hydraulic accumulator. But when the lift is moving downward direction, no large external energy required & at that time the energy from the pump is stored in the accumulator. History of  Hydraulic Accumulator 1846- First Hydraulic accumulator was made by William Armstrong, a crane powered by water of town mains at Newcastle, Uni...

 Hydraulic Press "The hydraulic press is device used for lifting heavy weights by the application of much smaller force." A  hydraulic press  is a  machine press  using a  hydraulic cylinder  to generate a  compressive force .  It uses the hydraulic equivalent of a mechanical  lever , and was also known as a  Bramah press  after the inventor,  Joseph Bramah , of  England . He invented and was issued a patent on this press in 1795. Working Principle of a Hydraulic Press A Hydraulic press work on the principle of pascal's law which states that- "Intensity of pressure in a static fluid is transmitted equally in all directions" Construction of a Hydraulic Press The hydraulic press consists of the two cylinders of different diameters. One of the cylinder is of large diameter & contain a ram, while other cylinder is of small diameter & contain a plunger. The two cylinder are connected by a ...

Centrifugal Pump Vs Reciprocating Pump Sr. No. Centrifugal Pump Reciprocating Pump 01 Centrifugal pump has smooth and continuous discharge Due to reciprocating mechanism a Reciprocating pump has fluctuating and pulsating discharge 02 Centrifugal pumps can handle large quantities of liquids Due to valves and reciprocating mechanism a reciprocating pump can handle less quantity of liquids 03 Centrifugal pumps can lift highly viscous liquids Due to complex working mechanism of reciprocating pump it can lift only less viscous liquids. It can only lift water and similar liquids. 04 Due to simple construction and absence of extra parts, centrifugal pumps require less floor area. Due to the presence of air vessels and  belt drive , reciprocating pump occupies more floor area. 05 Efficiency of centrifugal pu...