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Topic: Axial flow

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Axial compressor - Wikipedia, the free encyclopedia Axial compressors are essentially a steam turbine reversed; instead of high-pressure gas flowing into the turbine and forcing it to rotate to provide power, in the compressor role power is provided from an external source in order to spin the system and compress the gas. Axial compressors are compressors in which the fluid flows mainly parallel to the rotation axis. Axial flow compressors have large mass flow capacity and high efficiencies, but have a smaller pressure rise per stage than centrifugal compressors. en.wikipedia.org /wiki/Axial-flow_compressor   (2472 words)

Gas compressor - Wikipedia, the free encyclopedia As gases are compressible, the compressor also reduces the volume of a gas, whereas the main result of a pump raising the pressure of a liquid is to allow the liquid to be transported elsewhere. Compressors are loosely related to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. Air compressors sold to and used by the general public are often attached on top of a tank for holding the pressurized air. en.wikipedia.org /wiki/Air_compressor   (1142 words)

Pump - Encyclopedia.WorldSearch Chemical metering, mag drive, flow meters, pump skids, hydrogen peroxide metering pumps, variable speed. Pumps fall into two categories: positive displacement pumps, which force fluid from one sealed chamber to another with little leakage, and dynamic pumps, which use the momentum of the fluid to move it across an unsealed chamber. Pumps work by using mechanical forces to push the material, either by physically lifting, or by the force of compression. encyclopedia.worldsearch.com /pump.htm   (1142 words)

Morrison Pump Company Manufacturers of Axial Flow and Mixed Flow Pumps - Fixed, Portable, and Floating Pump Stations www.morrisonpump.com   (1142 words)

Encyclopedia: Axial-flow compressor The axial flow compressor is an improvement on the centrifugal compressor previously used in turbine engines,though small and micro turbines use centrifugal compressors with relative advantages (in terms of pressure ratios achieveable per stage of compression). Axial flow compressors are typically used in the compression stage of gas turbine engines. On some axial compressors the rear stages become too small to be robust, so a centrifugal compressor is often used to terminate the compression process (e.g. www.nationmaster.com /encyclopedia/Axial_flow-compressor   (525 words)

Goulds Pumps - Technews For a typical axial flow pump, the head and brake horsepower both increase drastically near shutoff as shown in Fig. Mixed flow centrifugal pumps and axial flow or propeller pumps have considerably different characteristics as shown in Figs. The head curve for a mixed flow pump is steeper than for a radial flow pump. www.gouldspumps.com /cat_technews.ihtml?pid=66&lastcatid=45&step=4   (525 words)

Power 3 Axial Flow and Centrifugal pumps differ greatly in how they consume power in relation to the flow rate. Axial Flow pumps meet less resistance as flow increases. Those two reasons cause Axial Flow pumps to not only consume more power at low flow rates, but also Axial Flow pumps vibrate when output from the impeller is restricted, whereas Radial Flow pumps may run smooth with less vibration at low flow rates. www.irrigationcraft.com /power_3.htm   (525 words)

Flow-Power - Applications The FP pump is a unique, high volume, low pressure axial flow pump with an enormous pumping capacity as high as 3100 GPM with only a 7 1/2 HP energy input. Creation of flow patterns such as circular flows, expanding flows or submerging flows assist the aquaculturist in producing the most from their ponds, such as preventing still areas in square or rectangular ponds, to preventing thermoclines or overheating of water in shallow ponds and also for rapid drainage or self cleaning tanks. As an aquaculture pumping system, the FP pump offers superior efficiency and performance in most aquaculture pumping situations. www.flow-power.com /apps   (525 words)

Patterson Pump - Water13 These Axial and Mixed Flow Pumps consist of a bowl assembly, which is cast and provides much more reliable service; an outer column and discharge elbow; shaft and shaft cover tube; floor plate; and motor mounting stand. Patterson Type "G" Axial and Mixed Flow Pumps have demonstrated over and over again their ability to move large volumes of liquid at low to medium heads with an efficiency and economy unobtainable with any other type of pump. Axial and Mixed Flow Pumps generally operate in a submerged state with suction entrances flooded. www.ie.pattersonpumps.com /water13.html   (525 words)

Wind Tunnels - Axial Fan Axial fans have a much more limited operating range (in terms of the pressure-rise coefficient, defined as the ratio of pressure rise through the fan to the dynamic pressure of the flow) than centrifugal blowers. Most closed-circuit tunnels are driven by axial-flow fans, which produce a static pressure, rise (with no appreciable change in axial velocity or dynamic pressure unless the pressure rise is comparable with the absolute pressure) at one point in the circuit, to compensate for the total-pressure losses in the rest of the circuit. Because it is necessary to return to uniform, non-swirling flow in a circular or polygonal section downstream of the fan, the diameter of the central nacelle ("boss", "hub") is usually a smaller fraction of the fan diameter than in multi-stage compressor practice, and rarely exceeds 0.5 to 0.6 of the fan diameter. vonkarman.stanford.edu /tsd/pbstuff/tunnel/axialfan.html   (815 words)

Engine Glossary - UEET axial flow compressor - The direction of the flow of compressed air is parallel to the spool axis. Centrifugal flow turbojet: A turbojet engine with a centrifugal compressor rather than an axial flow compressor. It is a function of the flow current (ampere) and the amount of resistance to flow (ohm) present. www.ueet.nasa.gov /glossaries/EngineGossary.html   (2031 words)

Stall prediction method for axial flow compressor - US Patent 6715984 In contrast, since the flow near the leading edge of the rotor blade 12 is most stable, it is desirable for accurate and reliable detection of the indication to dispose the high response pressure sensor adjacent to the leading edge as a position in the axial direction. A stall prediction method for an axial flow compressor according to claim 1, wherein a plurality of said pressure sensors are disposed in the circumferential direction of the axial flow compressor for obtaining time history data at various positions of one rotor blade. In general, efficiency of an axial flow compressor such as a gas turbine compressor or a jet engine increases as the pressure ratio increases and as air flow supplied into the compressor decreases. www.patentstorm.us /patents/6715984.html   (2708 words)

Compressor Section - Generic Information The dual compressor is a combination either of two axial compressors or of an axial and a centrifugal compressor (Figure 4). The axial compressor and centrifugal compressor combination is mounted on the same shaft; the compressors turn in the same direction and at the same speed. The dual-axial compressor consists of a low-pressure compressor in front and a high-pressure compressor in the rear. www.aircav.com /gencompr.html   (2327 words)

AXIAL-FLOW   COMPRESSOR parallel to the axis of the compressor rotor. The compressor draws in air at the hub of the compressor  is  located  at  the  very  front  of  the www.tpub.com /content/fc/14104/css/14104_91.htm   (179 words)

Axial flow fluid compressor with angled blade - US Patent 4872820 A compressor according to claim 3, wherein said transmitting means includes an engaging groove formed in the outer periphery of the rotary member, and a projecting portion extending from the inner peripheral surface of the cylinder and fitted in the engaging groove to be movable in the radial direction of the cylinder. In these conventional compressors, a structure of a drive unit such as a crankshaft for transmitting a rotational force to a compression section and a structure of the compression section are complex, and the number of components used in the compressor is large. A compressor according to claim 1., wherein said driving means includes an electric motor section for rotating the cylinder and transmitting means for transmitting the rotational force of the cylinder to the rotary member so as to rotate the rotary member interlockingly with the cylinder. www.patentstorm.us /patents/4872820.html   (3938 words)

Axial Flow Pump Although the axial-flow pump theory described below uses the assumption of incompressible flow, it is still frequently used even for gases because the pressure rise per stage is usually small. Since there is no radial flow and the rotor speed is constant throughout the length of the pump, continuity again requires that the axial velocity components remain constant The vector diagrams for a generalized axial pump is shown in the animation below. batman.mech.ubc.ca /~mech380/notes/turbomac/other/axial.html   (3938 words)

Pumps for Florida Irrigation and Drainage Systems Pumps with open impellers are usually used for pumping liquids with large particles and may be advantageous in drainage or when animal waste is applied through an irrigation system. Pump cavitation can be avoided by assuring that the net positive suction head available (NPSHa) is always greater than that required (NPSHr) by the pump. Pump cavitation is defined as the formation of cavities on the back surface of an impeller and the resulting loss of contact between the impeller and the water being pumped (Walker, 1972). edis.ifas.ufl.edu /BODY_WI001   (3938 words)

FEDSM99-6839: A Fully Three-Dimensional Inverse Computation of an Axial Flow Pump Impeller A Fully Three-Dimensional Inverse Computation of an Axial Flow Pump Impeller FEDSM99-6839: A Fully Three-Dimensional Inverse Computation of an Axial Flow Pump Impeller An inverse computation of a gas-liquid two-phase flow pump impeller is presented. asme.pinetec.com /fedsm1999/data/s-287/6839.html   (3938 words)

Axial flow pumps from Orbit Pumps Limited The complete axial flow range can be configured for installation in vertical, sloping or horizontal applications. Orbit's axial flow pumps efficiently transfer large volumes of water at low heads. The large pumps are capable of flows of up to 2600 litres per second. www.orbitpumps.co.uk /axial.asp   (3938 words)

Axial flow pumps I`ve found typical vibration levels for a number of different pump types, but not for Axial flow canister type pumps, has anyone got any experience of typical values in practice as the manufacturer is being unhelpful, these pumps are operating at about 1480 l/s at 7.5m head, with 165kw motors. www.vibinst.org /_vibezonenew/00000444.htm   (3938 words)

D&D's Axial Flow Pump The Axial Flow Pump is the pump of choice when pumping large volumes of "clear" water at maximum heads of 25 feet. The Axial Flow, or Propeller Pump, moves water in a straight line or with the axis of the pump casting. The advantage of D and D designed Axial Flow Pumps is infinite control, which is not possible when using conventional systems. www.ddpumps.com /pages/axialflow.html   (3938 words)

Method and apparatus for optimizing the vane clearance in a multi-stage axial flow compressor of a gas turbine - Patent 4795307 In accordance with the invention, a portion of the compressed air which flows axially in the annular flow channel of the compressor is removed for thermal control of the rotor disks by heat exchange therewith. The invention relates to the optimization of the clearance between the vanes and adjacent structure in a multistage axial flow compressor of a gas turbine power plant and particularly to the thermal control of the rotor disks of the compressor to achieve such optimization. The air flows from the flow channel as leakage air between the adjoining edges of the intermediate rings 37 and 38 and the root portions 5", 35" and 36" of the rotor vanes. freepatentsonline.com /4795307.html   (4067 words)

Axial Compressors Axial flow compressors are designed for high volume, high efficiency and high reliability applications. Axial compressor design and there associated components are always being reviewed for improvement. Pressure ratio is determined by the number of stages and flow is varied by changing the length of the blades. www.dresser-rand.com /Turbo/eq/axialcomp.asp   (504 words)

AXIAL FLOW COMPRESSOR A type of air compressor in which air is compressed in a series of stages as it flows axialy through a decreasing tubular area. Translations for "AXIAL FLOW COMPRESSOR"; alternative meanings/domain in parentheses. Specialty definitions using "AXIAL FLOW COMPRESSOR": can type chamber, Centrifugal flow turbojet. www.websters-online-dictionary.org /ax/axial+flow+compressor.html   (149 words)

DESIGNING A COMPRESSOR Indeed, centrifugal-flow compressors have a relatively large frontal area due to the size of the impeller, and are therefore much less suitable when air resistance is to be minimised. This design allows for some of the air discharged by the front compressor to be evacuated, controlling the airflow that is allowed into the rear compressor. Indeed, if there is an excessive amount of air flowing through any one stage of the compressor, the airflow may break down altogether. www.bath.ac.uk /~en3abo/gasturbines/compressor.htm   (478 words)

EPRI: Axial Compressor Performance Maintenance Guide Combustion turbine power output, thermal efficiency, and reliability are sensitive to the condition of the axial flow compressor. Hence, knowledge of axial compressor principles and practices is necessary to maximize profit from a CT power plant. The axial compressor is a critical component of any combustion turbine power generation unit. www.epri.com /OrderableitemDesc.asp?product_id=TR-111038   (449 words)

22 Fundamentals of turbo-machinery with emphasis on axial flow compressors and turbines. Axial flow compressor, rotating stall and surge stability, compressor map. Each student is then given a changed engine parameter such as a loss in turbine efficiency, bleed flow from compressor, increased burner pressure loss, etc. m-5.eng.uml.edu /abet/22484.htm   (374 words)

The supersonic axial-flow compressor The present report is largely a general discussion of some of the essential aerodynamics of single-stage supersonic axial-flow compressors. An investigation has been made to explore the possibilities of axial-flow compressors operating with supersonic velocities into the blade rows. Preliminary calculations showed that very high pressure ratios across a stage, together with somewhat increased mass flows, were apparently possible with compressors which decelerated air through the speed of sound in their blading. naca.larc.nasa.gov /reports/1950/naca-report-974   (177 words)

FM 1-506 Glossary It usually consists of a five-or seven-stage axial-flow compressor and one centrifugal-flow compressor. In the combustor, a diffuser forms a divergent flow path for the exhaust gases. They are located in front of the first compressor rotor, and they control the angle of incidence of the inlet air, thus ensuring a compressor surge margin. www.cavalrypilot.com /fm1-506/Gloss.htm   (2957 words)

Lawrence Pumps Inc. axial flow propeller pumps Axial Flow pumps are designed for pressures and temperatures required to meet customers' specifications. Our Axial Flow Pumps are designed and built for reliable service, low maintenance and are backed by our long standing reputation for quality and attention to detail. www.lawrencepumps.com /products/axial.htm   (2957 words)

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