Product Search. Our dry vacuum pump is designed for the highest performance across all major industrial market sectors. Find Dry Vacuum Pumps. Lean More. Ebara's support network delivers maintenance, parts and ways to improve your system performance across the globe.
|Published (Last):||22 January 2009|
|PDF File Size:||6.42 Mb|
|ePub File Size:||16.14 Mb|
|Price:||Free* [*Free Regsitration Required]|
Product Search. Our dry vacuum pump is designed for the highest performance across all major industrial market sectors. Find Dry Vacuum Pumps. Lean More. Ebara's support network delivers maintenance, parts and ways to improve your system performance across the globe. Ebara's global network of support engineers and maintenance professionals means you will always be able to find help nearby. Pump products inquiries Semiconductor Manufacturing Equipment inquiries. Introducing Industrial Pump Video.
Contact Japan Office. Find an international office near you. The inducer, an important component which enables high suction performance, was exclusively designed using the 3D inverse design method, by which 3D data for blade geometry was numerically obtained for specified blade loading distribution.
The flow fields and performances of the inducer and pump were evaluated by CFD Computational Fluid Dynamics , while pump suction performance was evaluated using a Rayleigh-Plesset cavitation model.
The pump was then tested in a water test tunnel, the result of which indicated favorable suction performance. Cavitation CFD was used for investigating inducer work distribution effects and hub meridional shapes.
Suction performances predicted by cavitation CFD matched well with those of test results. These units are used in accordance with raw water and pure water specifications. This component uses ion exchange non-woven fabric by radiation graft polymerization for the ion exchanger. As GDI enables a significantly greater surface to be ion-exchanged than when this is done by applying ion exchange resin, it has become possible to make the unit compact and the operation more effective.
The pumping facility for feeding water had been installed in headrace tunnels, 1 large-scale vertical-axis pump in each of 2 vertical shafts.
The facility for return water features a hinge-float for enabling water intake from surface layers,in line with dam water level changes. A pump equipped in the bottom of this float makes it possible to transmit return water as well as enable a natural downward flow.
Return water test operation was done in accordance with actual water levels to cope with water pressure fluctuations in tunnels and at gate, also with seasonal and time-wise fluctuations in water levels. Keywords Dam network, Effective use of water resource, Water feed pumping facilities, Water supply facilities, Ikari dam, Kawaji dam, Floating unit, Vertical volute type mixed flow pump, Submersible moter pump, Cone valve.
The majority of such problems are caused by fluid-induced unsteady excitation, which tend to occur during off-design pump operations low flow rate operations, NPSH operations, etc. There are also many cases where the deterioration of the damping property of the rotor-bearing system, related to the fluid operating condition, contributes in the occurrence of these problems. The following categorizes fluid-induced vibration of centrifugal pumps, introduces problems in actual cases, and gives examples of measures and research cases.
Keywords Rotordynamics, Annular pressure seal, Interference between impeller and vane, Fluid induced vibration, Centrifugal impeller, Centrifugal pump, Self-excited vibration, Resonance. Moreover, pump damage by erosion-corrosion or erosion results in high flow rate regions, due to mechanical effects on material surface oxide film or on the materials themselves.
The following discusses such corrosion and erosion-corrosion, including a brief discussion on erosion. Also discussed is differential-flow-rate-cell-corrosion, a phenomenon which may occur due to the formation of a macro cell caused by non-uniform flow rates inside seawater pumps.
All the equipment produced utilizes submerged electric motors or generators, thus eliminating any rotating sealing system. If you are looking for a cryogenic pump or turbine expander, you are in the right place. This unique design allows the pump to be installed inside a storage tank in a vertical pump column, with a suction foot valve located at the bottom. Because the pump is installed through the top of the tank, all connections below the maximum liquid level of the tank can be eliminated. This eliminates the possibility of major tank leakage due to a pipe or connection problem. It also permits the storage vessel to be located below ground level or completely covered by mounding. The applicable codes allow the owner to minimize the land area needed to locate a liquefied gas storage tank due to the reduction of spillage potential.