High Pressure

High Pressure

What Is A High Pressure Pump And What Are Its Uses?

A high pressure pump is broadly defined as any pump that can generate high discharge pressure, generally in excess of 800 psi. Pumps that generate pressures between 800 and 3000 psi are known as moderate high pressure pumps, while pumps that generate anywhere between 3000 psi and 5000 psi are known as very high pressure pumps. Apart from these pressure levels, there is another category of pressure pumps known as ultra high pressure pumps that generate pressures significantly in excess of 5000 psi, in the range of 10,000 psi to 40,000 psi.

Common types of pumps used for high pressure applications are reciprocating positive displacement pumps, particularly plunger pumps, which are capable of handling high pressure applications easily. Though in many cases pistons are also used with high pressure pumps, they are usually used only for applications that require working pressures below 1000 psi. One common type of positive displacement pump used for high pressure applications is the triplex plunger pump. Triplex plunger pumps consist of three plungers driven by a single prime mover. The parallel use of three plungers gives the triplex pump a discharge for every 120 degrees rotation of the prime mover. Another similar type of reciprocating pump that performs high pressure pumping duties is the quintuplex plunger pump, which is, as the name suggests, a pump with four plungers driven by a single prime mover. Quintuplex plunger pumps and triplex pumps are commonly known as power pumps and generally found in high-pressure applications.

A device that has found widespread adoption in high pressure applications is the hydraulically driven intensifier or amplifier. These devices use hydraulic pressure to significantly increase the pressure of the fluid being pumped. The intensifier consists of a common rod connecting two pistons with different bore sizes. When hydraulic fluid acts on the larger piston, it causes the smaller piston to be moved. Depending on the direction in which the smaller piston is moved by the hydraulic piston, it either takes suction or pressurizes and discharges the working fluid at very high pressure. There are two types of intensifiers and based on their construction and working, they are termed single shot intensifiers and reciprocating intensifiers. A single shot intensifier consists of one large hydraulic actuator piston and a single, smaller, high pressure piston - both connected by a common piston rod. When the large piston is moved, it makes the smaller piston move and fluid discharge takes place. When the larger piston is returned to its original position, by a spring or air-retraction, the smaller piston moves back, taking in the suction.

On the other hand, for reciprocating intensifiers, there is one large hydraulic piston mounted in the center of a piston rod with two smaller high pressure pistons on either end of the rod. When the pressurized hydraulic fluid acts on one side of the large piston and moves it, one of the smaller pistons takes suction from the low pressure line, while the other smaller piston simultaneously pressurizes the fluid in its bore and discharges it at high pressure. Alternately, when the hydraulic pressure acts on the opposite side of the larger piston, the smaller piston, which was taking suction, pressurizes the fluid and discharges it, and the smaller piston that was discharging, takes the suction.

These high pressure pumps have found uses in a variety of high-pressure applications, with reciprocating pumps such as triplex pumps, commonly being used in high pressure applications such as water pumps for water jet cutting systems plus water jet cleaning systems. Some other applications where high pressure pumps are used include foam firefighting, reverse osmosis desalination, as well as pumping of liquid CO2 and high vapor liquids.

To find and contact a high pressure pump manufacturer, check out Zycon.com for a detailed list.

About the Author

Ron Bargman, president of Zycon.com, has been fascinated and involved with the engineering and manufacturing processes required to turn ideas into products for over 30 years. Mr. Bargman is a regular contributor of manufacturing theme articles, and his rich industry history provides insight into manufacturing and engineering events and changes that are timely, poignant, and relevant. Through Zycon, he is able to transfer his passion for the industry by assisting engineers, designers and inventors find the services, parts and components that they need to succeed.

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Pressure $87.62 High Quality Content by WIKIPEDIA articles Pressure (symbol: P) is the force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure is the pressure relative to the local atmospheric or ambient pressure. Pressure is an effect which occurs when a force is applied on a surface. Pressure is the amount of force acting on a unit area. The symbol of pressure is P. Pressure is a tensor quantity, and has SI units of pascal; 1 Pa = 1 N/m2, and has EES units of psi; 1 psi = 1 lb/in2. Pressure is transmitted to solid boundaries or across arbitrary sections of fluid normal to these boundaries or sections at every point. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 132 Publication Date: 2010/06/14 Language: English Dimensions: 5.98 x 9.01 x 0.30 inches

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