Selection V 1 INTRODUCTION PAGE V-2 V 2 SUMP/WELL PUMP SELECTION GUIDE PAGE V-3 V 3 CAN PUMP SELECTION GUIDE PAGE V-4

Transcription

1 V Selection V 1 INTRODUCTION PAGE V-2 V 2 SUMP/WELL PUMP SELECTION GUIDE PAGE V-3 V 3 CAN PUMP SELECTION GUIDE PAGE V-4 V 4 SUBMERSIBLE PUMP SELECTION GUIDE PAGE V-5 V 5 LOW LIFT PUMP SELECTION GUIDE PAGE V-6 - V-1 -

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3 V 1 INTRODUCTION An understanding of the basic components of the vertical pump is required in order to take advantage of its flexibility in efficiently and realibly meeting a wide range of system requirements. Proper selection of the many components and types of construction available depends on factors such as the depth or length of the pump, size and rotative speed, abrasive or corrosive properties of the fluid being pumped, fluid temperature, and the lubricating qualities of the fluid. When unusual conditions are encountered, consultation with a Blue River Pump Co. Representative is recommended. Components of the Vertical Pump The four basic components of a typical vertical pump are: - Driver - Discharge Head Assembly - Column and Shaft Assembly - Bowl Assembly Driver The driver provides power to rotate the shaft and impellers. The driver also supports the weight of the shaft and impellers as well as the weight of the unbalanced downward thrust imposed by the pumping action. The electric motor is the driver used in most applications. Other common drivers include internal combustion engines with right angle gear drives or steam turbines. Discharge Head Assembly The cast iron or fabricated steel discharge head is supplied in a number of different configurations to meet specific system requirements. The discharge head serves four primary functions: Column and Shaft Assembly It connects the bowl assembly to the discharge head assembly and serves two functions: 1) Houses the lineshaft bearings provided for shaft radial support. 2) Channels the fluid vertically from the impellers in the bowl assembly to the discharge head. The length of the column and shaft assembly depends on system requirements or may be eliminated altogether. The shaft may be either product or oil lubricated. Bowl Assembly It is generally constructed of standard components stocked in inventory. Bowl size determines rate of flow while the number of stages determines pressure or head. Impellers may be of either the enclosed or semi-open design. The type of suction connection can be varied to adapt to different piping systems and applications. Suction connections may be fitted with strainers for well-systems or open collection basins, threaded or flanged for rigid connection to piping systems, or with bellmouth inlets for sump or barrel systems. DISCHARGE HEAD ASSEMBLY 1) Aligns the pump with the driver, eliminating the need for flexible shaft coupling devices. 2) Provides external support for the entire pumping unit. 3) Directs the flow to the desired direction with above or below the floor discharge. 4) Provides either a stuffing box or mechanical shaft seal to seal head from leakage around shaft. COLUMN AND SHAFT ASSEMBLY BOWL ASSEMBLY - V-2 -

4 V 2 SUMP / WELL PUMP SELECTION GUIDE SUMP OR WELL CONDITIONS Pump application: Inside diameter or surface casing or sump (in.): Total depth of sump or well (ft.): Is casing stepped down? Where? (ft.) Smaller (in.): casing from (ft.): to (ft.): Screen set (ft.): to (ft.): and from (ft.): to (ft.): Sump water level (ft.): Min: Max: Well static water level (ft.): Well pumping water level (ft.): Ph value: Viscosity: Capacity (US GPM): Bowl head in feet (TDH): Bowl setting (column length) (ft.): Column lubrication required: (oil) or (water) Type impellers required: (semi-open) or (enclosed): No. of Stages: NOTE: Bowl head = elevation difference in feet between pumping liquid level in well or sump and pump discharge connection plus friction losses in column and discharge head plus system head requirements. Size: HP: Type: (VHS) (VSS): Speed of driver (RPM): Ratio (if gear): Non-reverse ratched desired: Suction pipe size (in): Length (ft.): Strainer (type): (material): Discharge flange size: Column pipe size: Discharge head connection: (standard) or (special) (if special, describe fully): Seal arrangement: Tension nut seal (oil lube): Packing box (water lube): Mechanical seal: - VHS or VSS Electric Motor Drive - Diesel Engine with Right Angle Gear Drive DISCHARGE HEAD ASSEMBLY - WCA, WCH Discharge Head - WFOL, WFOG Discharge Head COLUMN AND SHAFT ASSEMBLY - Oil Lube - Product Lube - N/A for Short Coupled Pump - Semiopen or Enclosed Impellers plus: Basket Strainer Cone Strainer Suction Bell Suction Pipe Connection with Cone Strainer Flanged Suction for Dry Pit Application - V-3 -

5 V 3 CAN PUMP SELECTION GUIDE BARREL SIZING Suction pipe size (in): Outside diameter of barrel (in.): Suction type: (Flanged) (Plain end) (Victaulic): Total length of barrel (ft.): Ph value: Viscosity: Discharge Pressure (ft.): Suction Pressure (ft.): Differential Pressure or Head (ft.): Capacity: (US GPM) Pump differential head (ft.): Column losses (ft.): Suction barrel and discharge head losses (ft.): Bowl head (differential head plus losses) (ft.): Column lubrication: (product) Type impellers required: (semi-open) or (enclosed): No. of Stages: Size: HP: Type: (VHS) (VSS): Speed of driver (RPM): Ratio (if gear): Non-reverse ratched desired: Suction pipe size (in): Suction pipe type: (Flanged) (Plain end) (Victaulic groove): Discharge flange size (in.): Rating: (150#) (300#): Seal arrangement: (mechanical seal) (Packing box) - VHS Electric Motor Drive - VSS Electric Motor Drive DISCHARGE HEAD ASSEMBLY - WCH, WCA Discharge Head - WOFN, WOFT Discharge Head BARREL ASSEMBLY - Barrel With Suction - Barrel With out Suction COLUMN AND SHAFT ASSEMBLY - Product Lube with Pipe Connection - Product Lube with Flanged Connection - N/A for Short Coupled Pump - Semi-Open or Enclosed Impellers with Discharge Case for Threaded Column - Semi-Open or Enclosed Impellers w/out Discharge Case for Flanged Column - Semi-Open or Enclosed Impellers w/out Discharge Case for Direct Adaptation to Discharge Head - V-4 -

6 V 4 SUBMERSIBLE PUMP SELECTION GUIDE WELL OR SUMP CONDITIONS Inside diameter or surface casing or sump (in.): Total depth of well or sump (ft.): Is casing stepped down? Where? (ft.) Smaller (in.): casing from (ft.): to (ft.): Screen set (ft.): to (ft.): and from (ft.): to (ft.): Sump water level (ft.): Min: Max: Well static water level (ft.): Well pumping water level (ft.): Ph value: Viscosity: Capacity (US GPM): Bowl head in feet (TDH): Bowl setting (column length) (ft.): Type impellers required: (Enclosed only offered on submersibles. Contact factory for semi-open impeller applications): No. of Stages: NOTE: Bowl head = elevation difference in feet between pumping level in well or sump and pump discharge connection plus friction losses in column and discharge head plus system head requirements. Motor Diameter: HP: Speed of driver (RPM): Full load amps: Min. velocity past motor for cooling (ft/sec): Discharge flange type: Riser pipe size: Column check valve: (yes) (no): Size: Electric cable size: Length: DISCHARGE ASSEMBLY - Type S Discharge Pipe - Type L Discharge Pipe RISER PIPE ASSEMBLY - Riser Pipe - Check Valve - Enclosed Impellers - Submersible Motor - V-5 -

7 WELL OR SUMP CONDITIONS V 5 LOW LIFT PUMP SELECTION GUIDE Inside diameter or surface casing or sump (in.): Total depth of well or sump (ft.): Sump water level (ft.): Min: If water, is it clear, raw, river, brackish? Discharge Pressure or head (ft.): Max: Capacity (US GPM): Continuous flow: Min: Bowl head in feet (TDH): Bowl setting (column length) (ft.): Max.: Column lubrication preferred: (oil) or (water) Type: (mixed flow) (axial flow) NOTE: Bowl head = elevation difference in feet between pumping liquid level in well or sump and pump discharge connection plus friction losses in column and discharge head plus system head requirements. Velocity head must be added by user to determine system total head. - Electric Motor Drive - Diesel Engine with Right Angle Gear Drive DISCHARGE HEAD ASSEMBLY - WOFL, WOFG Above Ground Discharge Head - WUFL, WUFG Below Ground Discharge Head COLUMN AND SHAFT ASSEMBLY - Oil Lube - Product Lube Type: Speed of driver (RPM): Ratio (if gear): Non-reverse ratched desired: Strainer (type): (material): Discharge size: Discharge type: (150# Flange) (Plain end) (Victaulic groove): - Mixed Flow (Strainer Optional) - Axial Flow (Strainer Optional) - V-6 -