A high pressure positive displacement pump, for example suitable for delivering fuel to a fuel injection system comprises one or more pumping assemblies (2,3,4). Each pumping assembly comprises a cylinder block (11) which defines a pumping cylinder (12) in which a pumping plunger (13) is ...
Positive displacement pumps are generally more tolerant of suction lifts than centrifugal pumps, and all tend to produce pulsating flows to some extent (though a progressive cavity pump is better in this respect than a piston pump for example). Reciprocating positive displacement pumps may produce si...
Example - Speed Correction of Reciprocation Pump vs. Fuel Oil Viscosity The viscosity of fuel oil nr. 2 at 20 oC is about 150 SSU. The viscoity of fuel oil type 5 at 100 oC is about 4000 SSU. According the table above the speed of the reciprocating pump should be reduced with approxi...
Main Types of Pumps: Positive Displacement & Centrifugal Pump Pumps simplify the transportation of water and other fluids, making them very useful in all types of buildings - residential, commercial, and industrial. For example,fire pumpsprovide a pressurized water supply for firefighters and automatic...
Positive Displacement Pump Classification: A Verder peristaltic pump example. (c) Verder. Progressive cavity pumpscannot be built to a perfect fit between the spiral impeller and the casing. This means that flow-back in the gap between the impeller may be lower when pumping high viscosity material...
An example is yogurt applications in which they need to transfer flavors (such as strawberry or blueberry) out of drums. Often the drums have a hygienic liner that can be a challenge for a traditional pump (it will suck the product and bag into the pump). However, a UHT Standard pump ...
Example - Pumping Water from an Open Tank When elevating a pump located above a tank (lifting the pump) - the fluid starts to evaporate at the suction side of the pump at what is the maximum elevation for the actual temperature of the pumping fluid. ...
Major types of positive displacement (PD) meters for liquid measurement. Design Design of PD meters varies from device to device, and serves various portions of industry needs depending upon operational characteristics. For example, common to the natural gas industry are four-chamber/two-diaphragm ...
In use, the positive displacement pump apparatus 10 of the present invention is intended for use in the pumping of a fluid in a substantially continuous or non-pulsing flow. For example, the pump apparatus 10 may be installed in-line such that fluid can enter through the inlet 84 and ultim...
Positive displacement(PD) flowmeters are the workhorses of today's flowmeter world.They perform many important flow measurements most people take for granted.For example,they are widely used for metering both water and gas in residential... CEW Group - 《Chemical Engineering World》 被引量: 0...