By Val S. Lobanoff, Robert R. Ross
Centrifugal Pumps: layout and alertness contains topics comparable to nonmetallic pump purposes, mechanical seals, vibration and noise in centrifugal pumps, rotor dynamics, and the data essential to expand pump lifestyles in the course of set up and operation.
This quantity includes 21 chapters, with an introductory bankruptcy discussing procedure research for pump choice. the following chapters then move directly to speak about particular velocity and modeling legislation; impeller layout; basic pump layout; volute layout; layout of multi-stage casing; double-suction pumps and side-suction layout; NPSH; vertical pumps; pipeline pumps; high-speed pumps; double-case pumps; slurry pumps; hydraulic energy restoration generators; chemical pumps; shaft layout and axial thrust; mechanical seals; vibration and noise in pumps; alignment; rolling aspect bearings and lubrication; and mechanical seal reliability.
This ebook could be of curiosity to practitioners within the fields of mechanical engineering and equipment administration.
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Additional info for Centrifugal Pumps: Design and Application, Second Edition
Single suction or double suction impellers. In establishing discharge geometry for double suction impellers, use factors as given in this chapter. 09 impeller Design 37 (2) 5 , as final results will not be accurate. On the impeller suction side however, divide the inlet flow and eye area by 2 for each side of the impeller centerline. Impeller Layout Development of Impeller Profile (Plan View) Lay out the impeller width b2 at full diameter (Figure 3-9). Begin to develop the hub and shroud profiles by expanding this width by approximately 5° on each side of the vertical center line toward the suction eye.
There are no gaps between pumps, each performance block can be covered by normal impeller trim, and there are no overlaps. The chart is also helpful to the designer. In this example, only six small pumps have to be Figure 4-2. Recommended performance chart. General Pump Design 49 designed and test checked. The other sizes that follow specific speed lines can be factored up and their performance accurately predicted, designed and test checked. The other sizes that follow specific speed lines can be factored up as described in Chapter 2 and their performance accurately predicted.
Impeller eye diameter/outside diameter ratio. 5 in. Step 6: Determine shaft diameter under impeller eye. Methods for calculating shaft diameter are discussed in detail under shaft design. For this exercise, the shaft diameter under the impeller eye is assumed to be 2 in. Step 7: Estimate impeller eye area. 66 sq in. Impeller Design 33 Step 8: Estimate NPSHR. From Figure 3-6: Step 9: Determine volute parameters, To finalize the impeller design, we must consider any mechanical limitations of the pump casing.