Regenerative Turbine Pumps

Transcription

1 Bulletin Series Regenerative Turbine Pumps Capacities to 0 GPM Heads to Feet MTH PUMPS

2 Series Regenerative Turbine Pump MTH Series regenerative turbine pumps represent the most economical, high performance alternative for low flow (to 0 GPM) applications involving moderate to high pressures (heads to feet). By combining years of regenerative turbine pump designs with precision computer controlled manufacturing, the Series delivers high efficiency pumping operation, even at low PSH. High quality parts and an easily serviceable design provide low maintenance and long life. WATER PASSAGE DESIG MTH has combined sixty years of water passage design with a multistage mechanical concept to achieve maximum capacity and pressure while minimizing horsepower requirements. By optimizing the number of pumping stages with each water passageway, MTH improves both efficiency and pressure in the Series, exceeding the standards realized by previous techniques. IMPELLER PROFILE One of the most notable improvements in regenerative turbine pump technology incorporated in Series pumps involves the ability to determine the optimum impeller width and blade length. These factors have a significant effect on the required horsepower versus pressure curve for regenerative turbine pumps. By optimizing these for each Series pump, peak efficiency is improved and off peak horsepower requirements are reduced as well. IMPELLER BLADES After the most favorable impeller profile has been determined for a particular water passageway crosssection, MTH calculates the number of blades needed to maximize the performance of that pump. Current blade design in Series pumps increases both efficiency and design pressure without the manufacturing difficulties associated with producing contoured blade impellers. State-of-the-art computer controlled machines simplify manufacturing of the various MTH impellers utilized in the Series. The result is a high performance pump providing efficiency characteristics exceeding those of more expensive units. PSH REQUIREMETS Series regenerative turbine pumps meet low net positive suction head (PSH) requirements without efficiency loss. This is achieved by keeping the inlet fluid velocity low and then gently accelerating to passageway velocities. LOW PSH REQUIREMETS Series regenerative turbine pumps provide exceptionally low PSH requirements to suit boiler feed water deaerator applications. This reduced PSH is obtained by using a first stage centrifugal Francis vane impeller with inlet flow paths shaped to maintain a constant fluid velocity. This reduces entry losses to the impeller as well as maintaining pump efficiency. A multi-vane diffuser is used in conjunction with the centrifugal impeller for balancing radial loads and extracting the maximum pressure from the flow produced by the first stage impeller. Pressure and flow produced by the low PSH inducer assures that the succeeding stages are adequately fed. STADARD MATERIALS PART Cover Seal Cup Bearing Arm Channel Ring LIMITATIOS BROZE BROZE STAILESS Discharge Pressure 0 PSI FITTED IRO RIG BROZE S TL Seal Pressure 0 PSI S tainless S uction Pressure (Min.) 26" Hg Vac. ASTM A48 ASTM A48 ASTM A48 A2 3 Speed 17 RPM Horsepower ASTM A48 ASTM A48 ASTM A48 A2 3 Temperature Standard Construction - F ASTM A48 ASTM A48 ASTM A48 A2 3 STM A48 2 ISI 4 EPR/Ceramic STM A4 Stee ISI 41 EPR/i-Resist Stee ISI 31 /Ceramic S tainless 31 Waukesha 8 31 Viton A Viton/Ceramic A A 8 A 2 A 2 6 Ceramic Seal Seat - Water Silicon Carbide Seal Seat & External Seal Flush Impeller A Carbon A 2 A 2 8 Shaft l l A 4 A 6 A 6 6 " O"Rings Seals EPR/i-Resist Ball bearing # 6 # 6 # 6 # 6 # 6 Suction Pressure Plus a Percentage of Differential Pressure 2 F 2 F

3 SERIES Dimensions 1 / S E ILET 1 4 T DISCHARGE PUMP OLY PUMP SERIES A B E F S T / 1/ / 1/ / 1/ / 1/ / 2 2 1/ 2 1 / 1/ 2 1/ / 2 2 1/ 2 1 / 1/ / 2 2 1/ 2 1 / 1/ 2 1/ / 2 2 1/ 2 1 / 1/ / 2 21 ROTATIO: Clockwise when viewed from driver end. A B L S F HD 3 1/2 1/4 1 1/2 0 0 SERIES 8 1/2 1/2 W All dimensions in inches. May vary ± 1/4 inches. 4-3/4 Mounting Slots 0 0 S T 2 1/ 4 1/ 4 1/ / 8 1/ 8 T 2 1/ 4 1/ 4 1/ / 8 1/ 8 2T 2 1/ 4 1/ 4 1/ 2 1/ 8 1/ 8 4T 2 1/ 4 1/ 4 1/ 2 1/ 8 1/ 8 2 1/ 4 1/ 4 1/ 2 3 1/ 8 1/ 8 1/ 8 2T 2 1/ 4 1/ 4 1/ 2 3 1/ 8 1/ 8 1/ 8 4T 2 1/ 4 6 1/ 4 1/ 2 1/ 8 1/ 8 1/ 8 1/ 8 6T 2 1/ 4 6 1/ 4 1/ 2 1/ 8 1/ 8 1/ 8 1/ 8 2 1/ 4 7 1/ 4 3/ 4 1/ 8 1/ 8 1/ 8 1/ 8 2 1/ 4 7 1/ 4 3/ 4 1/ 8 1/ 8 1/ 8 1/ 8 2 1/ 4 8 1/ 4 3/ 4 1/ 8 1/ 8 1/ 8 1/ 8 2 1/ 4 8 1/ 4 3/ 4 1/ 8 1/ 8 1/ 8 1/ 8 2 1/ 4 9 1/ 4 3/ 4 1/ 8 1/ 8 1/ 8 1/ SERIES 170 S T 1/ 4 1/ / 2 1/ 2 T 1/ 4 1/ / 2 1/ 2 2T 1/ / / 2 1/ 2 4T 1/ / / 2 1/ 2 1/ 4 3 1/ 2 1/ 2 1/ 2 2T 1/ 4 3 1/ 2 1/ 2 1/ 2 4T 2 1/ 8 6 1/ 4 1/ 4 1/ 2 1/ 2 1/ 2 6T 2 1/ 8 6 1/ 4 1/ 4 1/ 2 1/ 2 1/ 2 2 1/ 8 7 3/ 4 1/ 2 1/ 2 1/ 2 2 1/ 8 7 3/ 4 1/ 2 1/ 2 1/ 2 2 1/ 8 8 3/ 4 1/ 2 1/ 2 1/ 2 2 1/ 8 8 3/ 4 1/ 2 1/ 2 1/ 2 2 1/ / 4 1/ 2 1/ 2 1/ 2

4 SERIES Dimensions 1 8 9/ S E ILET 8 3/4 T DISCHARGE PUMP OLY PUMP SERIES A B E F S T / / 2 1/ / / 2 1/ / / 2 1/ / / 2 1/ / 2 2 1/ 2 1 1/ 4 1/ / 2 2 1/ 2 1 1/ 4 1/ / 2 2 1/ 2 1 1/ 4 1/ / 2 2 1/ 2 1 1/ 4 1/ 4 21 ROTATIO: Clockwise when viewed from driver end. A B L S HD F 3 1/2 1/4 1 1/2 2 2 SERIES 8 1/2 1/2 W All dimensions in inches. May vary ± 1/4 inches. 4-3/4 Mounting Slots 2 2 S T 2 1/ 4 1/ 4 3/ T 2 1/ 4 1/ 4 3/ T 2 1/ 4 1/ 4 3/ 4 8 4T 2 1/ 4 1/ 4 3/ / 4 1/ 4 3/ 4 1/ 4 8 2T 2 1/ 4 1/ 4 3/ 4 1/ 4 8 4T 2 1/ 4 6 1/ 4 3/ 4 1/ 4 8 6T 2 1/ 4 6 1/ 4 3/ 4 1/ / 4 7 1/ / 4 7 1/ / / / 4 9 1/ SERIES 270 S T 2 1/ 8 1/ 4 3/ 4 T 2 1/ 8 1/ 4 3/ 4 2T 2 1/ 8 1/ 4 3/ 4 1/ 4 4T 2 1/ 8 1/ 4 3/ 4 1/ 4 2 1/ 8 1/ 4 3/ 4 1/ 4 2T 2 1/ 8 1/ 4 3/ 4 1/ 4 4T 2 1/ 8 6 1/ 4 3/ 4 1/ 4 6T 2 1/ 8 6 1/ 4 3/ 4 1/ 4 2 1/ 8 7 1/ 2 2 1/ 8 7 1/ 2 2 1/ / / 8 9 1/ 2

5 SERIES Design Features MTH Series regenerative turbine pumps are engineered to provide long life, low-maintenance service for low-flow applications involving moderate to high pressures -- such as boiler feed and similar uses. Available in single, two, three, or four stage models, MTH pumps offer these proven design features... Hydraulically balanced bronze impellers Large shaft 4 stainless for minimum deflection Replaceable channel rings Advanced design mechanical seals Steep Operating Characteristics. ear-constant deliveries are maintained over wide variations in load. o Vapor Binding. MTH impellers are designed to handle up to % vapor in the liquid being pumped. o Metal to Metal Contact. MTH clearances enable handling of nonlubricating fluids while maintaining adequate heads. Low Head Requirements. MTH pumps have excellent PSH characteristics, which makes them ideally suited for difficult applications. Minimum Shaft Deflection provided by heavy-duty outboard bearing supports on both sides of the impeller. Balanced Radial Loads. On multistage MTH pumps, radial load equalization is designed into the pump. Lip sealed ball bearings Standard Pumps Are Fitted and have hydraulically balanced impellers, one-inch stainless steel shafts, and corrosion-resistant seals throughout. Mechanical Seals incorporate EPR seals, i-resist faces, and stainless steel components. These advanced seals permit elevated-temperature operation even with aggressive fluids. Lip-Sealed #4 Ball Bearings on both inboard and outboard ends, operate within rugged cast-iron bearing supports and are permanently lubricated for maintenance-free long life. Replaceable Channel Rings of,000 PSI cast iron, and O rings at all sealing points, contribute to trouble-free operation Water flinger Optional Features O-ring gaskets prevent leakage Construction Materials. fitted, all iron, all bronze and 3 stainless steel are available as stock materials. O Ring Gaskets., EPR, viton, neoprene or teflon are all available. Mechanical Seals., EPR, viton, eoprene or teflon elastomers, tungsten or silicone carbide seats and balanced or double seal arrangements are all available. External Water Seal Connection. Tapped openings can be provided for seal flushing from an external source. 0 Series Inducer for Low PSH The 0 Series inducer style pumps are ideally suited to applications where available PSH at the pump inlet is limited, such as boiler feed water deaerator service. A centrifugal Francis vane impeller with low PSH characteristics is utilized as the pump s first stage impeller, accounting for the lower inlet head requirement. This first stage impeller is used in conjunction with a multi-vane diffuser to provide the PSH required by the second stage regenerative turbine. Available PSH as low as two feet can be effectively handled with Series pumps, depending on the pump model and capacity.

6 SERIES Selection Chart HEAD I FT 0 U.S. GOS PER MIUTE I 1D 1E 1E 1G 1G 171H 171H 171J 171J 171K 171K I 1K 1E 1F 1G 171H 171H 171J 171K 171K I 1I 1D 1D 2I 2I 2I 2I 3I 1I 3 1I 1I 1D 1L 2I 2I 2D 2D 2D 3D 3D 3D 4D 1D 3 1D 1K 1L 2D 2D 2K 3D 2E 2L 3E 3E 4E 4E 4L 1E 1E 2K 2E 2E 2E 2F 3E 3E 2G 4E 4F 4G 4G 1F 1G 1G 2F 2G 2G 2G 3G 3G 3G 4G 4G SERIES Engineering Specifications Series The contractor shall furnish (and install as shown on the plans) an MTH Turboflex regenerative type pump model size of (BROZE FITTED) (BROZE RIG) ( IRO) ( BROZE) (3 STAILESS STL) construction. Each pump shall have a capacity of GPM when operating at a total head of feet at the specified temperature, viscosity, specific gravity, and with feet PSHA. The maximum speed shall not exceed 17 RPM. Pump shall be of the vertically split case design with removable bearing housings and is to be furnished with mechanical seals. The channel rings shall be replaceable external type. The suction connection shall be PT located in the top vertical position and be cast separately from the discharge. The discharge shall be PT in the top horizontal position and the pump shall be self-venting. The impeller(s) shall be located on a stainless steel shaft between sealed grease lubricated ball bearings. The impeller(s) shall be hydraulically self positioning with no external adjustment necessary. Each pump shall be tested at the specified capacity and head prior to shipment. The pump shall be mounted on a 02 MTH TOOL COMPAY 1G 171H 2G 2G 4G 4G 4G 174H H 171J 3G 173H J 171K K steel baseplate, flexibly coupled with aluminum guard to a phase Hertz volt RPM horizontal (DRIP-PROOF) (TOTALY ECLOSED) (EXPLOSIO PROOF) motor. The motor is to be sized to prevent overloading at the highest head condition listed in the specification Series The contractor shall furnish (and install as shown on the plans) an MTH Turboflex low PSH inducer style regenerative type pump model size of (BROZE FITTED) (BROZE RIG) ( IRO) ( BROZE) (3 STAILESS STL) construction. Each pump shall have a capacity of GPM when operating at a total head of feet at the specified temperature, viscosity, specific gravity, and with feet PSHA. The maximum speed shall not exceed 17 RPM. Pump shall be low PSHR inducer style design with a centrifugal Francis vane design impeller and a multi-vane diffuser for balancing radial loads. Pump shall be of the vertically split case design with removable bearing housings and is to be furnished with mechanical seals. The channel rings shall be replaceable external type. The suction 171K Selections based on coldwater flooded suction 1.0 S.G. Open Dripproof Motor. Consult individual pump curve for final selection. Refer to Series Bulletin. connection shall be PT located in the top vertical position and be cast separately from the discharge. The discharge shall be PT in the top horizontal position and the pump shall be self-venting. The impeller(s) shall be located on a stainless steel shaft between sealed grease lubricated ball bearings. The impeller(s) shall be hydraulically self positioning with no external adjustment necessary. Each pump shall be tested at the specified capacity and head prior to shipment. The pump shall be mounted on a steel baseplate, flexibly coupled with aluminum guard to a phase Hertz volt RPM horizontal (DRIP-PROOF) (TOTALY ECLOSED) (EXPLOSIO PROOF) motor. The motor is to be sized to prevent overloading at the highest head condition listed in the specification. MTH PUMPS 1 West Main Street Plano, IL -36 Phone: Fax: SALES@MTUMPS.COM