Screw Pump Twin Aggregates Series SPZ/M MagDrive

Transcription

1 Screw Pump Twin Aggregates Series SPZ/M MagDrive Application For the delivery of fuel oils, hydraulic oils or other lubricating liquids. The fluid media must not contain any abrasive particles nor attack the pump materials chemically. Main fields of application SPZ/M-twin aggregates operate as transfer, booster and burner operation pumps in fuel oil engineering, as transfer and filling pumps in tank farms as well as lube-oil pumps in any industrial branches. They are moreover used for pressure generation in oil-hydraulic plants of all kinds. Design/Construction Twin aggregate of the compact type of construction in which two screw pumps are interconnected by way of a reversing valve casing. Pump: Self-priming three-screw type of pump with internal bearing, without shaft sealing due to magnetic clutch. The pump is hermetically sealed due to the can of the magnetic clutch. The hardened and ground screws run in an exchangeable casing insert. The driving screw is hydraulically balanced. The end-side pump cover absorbs the axial thrust of the working screws. Their drive is hydraulic. The thread flanks merely transmit the torque resulting from the liquid friction. Thus, the thread flanks are practically stress-free and not subject to any wear. All sliding parts are lubricated by the delivery medium being within the range of full liquid friction. The radial and axial bearing of the driving screw with pump size 20 is by the balancing piston guided in the bearing ring, with pump size 40 by a groove ball bearing. Magnetic clutch and suction chamber are interconnected by way of a return gallery. Thus, the liquid circulates in the clutch chamber and leads away the heat, caused by eddy currents. A pump bracket with mounting foot carries out the connection pump/driving motor. Compact aggregate: Two of the described pumps are attached to a common reversing valve casing. Arranged in the reversing valve casing are two stop valves and two lockable non-return valves. Data on the design with filter, on the possible filter heating and on the manometers included in the scope of supply can be taken from the separate items of description. Operation Pump: The three spindles build due to their special profiling of the thread flanks, an axial and continuous shifting by rotation of the spindles from the suction to the pressure side. Despite the spindle rotations no turbulences occur. Consistent chamber volume excludes squeezing. Compact aggregate: The operating pump primes the fluid to be pumped through the suction chamber of the reversing valve casing and, in case of the design with filter, through the filter. Passage through the radial screen filter is from the outside to the inside. The operating pressure building up in the pressure chamber opens the nonreturn valve of the operating pump closing that of the inoperative pump. This prevents the stand-by pump from turning in reverse motion. Noise/Pulsation The structural design and operation of the screw pump twin aggregate ensure a very low noise level and an almost pulsationfree delivery. Performance data Capacity Q 10 I/min up to 110 I/h Temperature of the fluid pumped t up to 150 C Inlet pressure p z up to 6 bar Pump outlet pressure p d up to 40 bar Viscosity range v =2 up to 750 mm²/s Delivery flange DN d =20 up to 25 mm With n = /min For the attainable delivery pressure as a function of viscosity and speed, pleas refer to the individual characteristics. The pressure data only apply to nearly static pressure load. With dynamic pressure change load, please inquire. Pressure relief valves As an overload protection, installed in each pump is a pressure relief valve, which, with all designs, is set at a response pressure approx 10% above the operating pressure. In case of different response pressures are requested, it must be indicated in the order. 1

2 Flanges/Connections Flanges Suction side: PN 16, DIN 2533 Delivery side: PN 40, DIN 2535 Connections SPZ/M without filter: M1, M2 Pressure gauge SPZ/M with filter: B7 Draining filter casing E7 Venting filter casing M1, M2, M3 Pressure gauge Materials Material designs W 20 W 8 Pump casing 1 EN-GJL-250 EN-GJS Casing insert 2 AlMgSi1 AlMgSi1 Pump cover driving side end side 3 4 EN-GJL-250 EN-GJL-250 EN-GJS EN-GJS Casing cover 7 EN-GJL-250 EN-GJS Filter casing 9 EN-GJL-250 EN-GJS Bearing bush 10 AlMgSi1 AlMgSi1 Driving screw 12 16MnCrS5 16MnCrS5 Working screw 13 16MnCrS5 16MnCrS5 Reversing valve casing Wire mesh at radial screen filter For design with filter only 301 EN-GJL-250 EN-GJS Steel galvanized Steel galvanized Operating control Manometers: SPZ/M without Filter Outlet side: a manometer (included in the scope of supply). A mano-vacuummeter being requested on the suction side, same would have to be provided at the site. Measuring point M1 is provided for connection. SPZ/M with Filter Suction side: two mano-vacuummeter Outlet side: a manometer (each of which included in the scope of supply) The mano-vacuummeters show the pressure behind the filters. Thus, the pressure loss in the filter can be determined and an inadmissible contamination realized. Change-over switchgear: Against extra charge, a reversing device is supplied for operating control purposes, which, regarding its circuitry, is designed so that in case of failure of the operating pump, the stand-by pump is automatically put into operation. Signal lamps indicate the respective operating conditions. Scope of supply: Change-over switchgear U1 for motors up to 3 KW (400 V operating voltage) for across-the-line starting, consisting of:: 1 Steel plate casing, enclosure IP54, dimensions: width 320 mm, height 320 mm, depth: 160 mm 2 three-phase air-break contactors with overload relay 1 selector switch (PUMP 1, PUMP 2, und OFF) 2 green signal lamps Operation 1 red signal lamp Fault 1 control fuseg Connecting terminals for all incoming and outgoing lines. 2 2 control line terminals for connection of additional control stations, if any. Change-over switchgear U3 for motors with 4.0 und 5.5 KW drive power (400 V operating voltage) suitable for star-delta starting, consisting of: 1 Steel plate casing, enclosure IP54, dimensions: width 520 mm, height 520 mm, depth: 210 mm 1 selector switch (PUMP 1, PUMP 2, und OFF) 2 green signal lamps Operation 1 red signal lamp Fault 2 circuit fuses 1 control fuse Connecting terminals as U1 Installation SPZ/M-compact aggregates are provided for horizontal installation or wall mounting. For safety purposes, the arrangement with motor downwards is not admissible. Oil through A separate oil through is supplied for each SPZ/M compact aggregate. Drive Drives of the following type are normally provided: Surface-cooled three phase squirrel cage induction motors, IM V1 type of construction; enclosure IP54 according to IEC Standards, class B insulation, performances and main dimensions according to DIN Motors rated for 50 Hz may without any change also be operated also from 60 Hz supply systems, speed and performance will change as follows: Motor wound for 50 Hz Connection to 60 Hz Conversion factor for operation with 60 Hz...V...V Speed Performance 230 V 230 V 1,2 1,0 400 V 400 V 1,2 1,0 400 V 460 V 1,2 1, V 460 V 1,2 1,0 Power transmission is effected via a magnetic clutch. Additional radial forces must not act on the driving spindle. Magnetic clutch A connection flange to the drive-side of the screw pump fixes the magnetic clutch. The driving screw of the pump is stiffly connected with the rotor of the magnetic clutch. Non-contact transmission of torque between driving motor and pump due to the magnetic flux lines between inner and outer rotors. Filter As a protection against contaminations, the pumps can be supplied with a filter casing with incorporated radial screen filter (surcharge). Filter mesh size 0,4 mm. A pressure vacuum gauge included in the scope of supply indicates the pressure behind the filter. Thus, the pressure loss in the filter can be determined and an inadmissible contamination realized.

3 Electric heating (only per order) In case of design with filter, heating shell may be provided for filter heating (surcharge). Pump size Connection for Heating capacity SPZ/M V 205 W SPZ/M V 265 W The heating capacity is rated so that with an initial temperature of 20 C, a minimum heating-up time of 120 min. is required. In case of lower temperatures (below 0 C), an appropriately longer heating up time must be expected. The heating is not suited to achieve, during operation, a marked temperature increase of the fluid to be pumped. Abbreviation system SPZ/M 20 R 46 F W M Series Size Direction of screw pitch R = right Angle of screw pitch (Degrees) Model with filter Material Magnetic clutch Motor size = theoretically Delivery flow at /min and 46 degrees pitch angle Surcharge Magnetic clutch Type 60.6 MAK MAK MAK Motor-size S 3

4 Sectional drawing with parts list SPZ/M without filter 502x 500x Gasket 123 Gasket 124 Gasket 125 Joint ring 145 Joint ring 147 Joint ring 148 Hexagon screw 204 Hexagon screw 205 Socket-head cap screw 206 Hexagon nut 236 Rivet 280 Manometer 360 Stop valve 363 Connector 370 Casing 372 Hollow screw 373 Manometer connecting branch 374 Blank flange 440 Blank flange 441 Oil trough 475 Screw pump 500x Control block 502x Name plate 976 DIN test plate 978 X Modules Control block 502 Joint washer 107 Joint washer 108 Reversing valve casing 301 Valve upper part 355 RS- Valve upper part VM 863 GB /

5 Sectional drawing with parts list SPZ/M with filter 502x 500x Gasket 123 Gasket 124 Gasket 125 Joint ring 145 Joint ring 147 Joint ring 148 Hexagon screw 204 Hexagon screw 205 Socket-head cap screw 206 Hexagon nut 236 Rivet 280 Manometer 360 Stop valve 363 Connector 370 Casing 372 Hollow screw 373 Manometer connecting branch 374 Blank flange 440 Blank flange 441 Oil trough 475 Screw pump 500x Control block 502x Name plate 976 DIN test plate 978 X Modules Control block 502 Joint washer 107 Joint washer 108 Reversing valve casing 301 Valve upper part 355 RS- Valve upper part 356 VM 863 GB /

6 Aggregate dimensions and switching diagram SPZ/M without filter 1 Operating and stand by pump 2 Three phase motor 3 Stop valve 5 Lockable non return valve 7 Manometer with ball valve Dimensions in mm Subject to alterations Sense of rotation: clockwise, viewed from the drive side Pump Motor Aggregate dimensions size size SPZ/M to IEC a a1 a2 a3 b c e f g g4 h h3 h4 h5 h6 h7 i k1 90 L L M S M S Pump- Motor Aggregate dimensions Connecting dimensions size size Pressure Suction side Delivery side gauge SPZ/M to IEC k2 n o q2 s v w x DNs d1 B D DNd d2 F H M1/M2/M3 90 L , L M S M S VM 863 GB /

7 Aggregate dimensions and switching diagram SPZ/M with filter 1 Betriebs-und Reservepumpe 2 Drehstrommotor 3 Absperrventil 4 Siebsternfilter 5 Absperrbares Rückschlagventil 6 Mano-Vakuummeter mit Kugelhahn 7 Manometer mit Kugelhahn Dimensions in mm Subject to alterations Sense of rotation: clockwise, viewed from the drive side Pump Motor Aggregate dimensions size size SPZ/M to IEC a a1 a2 a3 b c e f g g4 h h3 h4 h5 h6 h7 i k1 90 L L M S M S Pump- Motor Aggregate dimensions Connecting dimensions size size Pressure Suction side Delivery side gauge SPZ/M to IEC k2 n o q2 s v w x DNs d1 B D DNd d2 F H M1/M2/M3 90 L , L M S M S VM 863 GB /

8 Subject to technical alterations A Member of the COLFAX PUMP GROUP ALLWEILER AG Postfach Radolfzell Allweilerstr Radolfzell Germany Tel. +49 (0) Fax (0) service@allweiler.de Internet: VM 863 GB / Ident-No