CVFV Vertical multistage low pressure pumps

Transcription

1 CVFV Vertical multistage lowpressure pumps

2 VERTICAL MULTISTAGE LOWPRESSURE PUMPS CVFV Application Vertical pumps CVFV are intended for pumping drinking and service water or even slightly polluted or turbid water containing 5 g sludge or further impurities a per litre, with max. grain size 0.5 mm. Max. temperature of pumped water 60 C. Permisible ph values range of pumped water 6 ph. Pumps may be applied to water management i n d u s t r y, w a t e r s u p p l y s e r v i c e s a n d technological processes of various industrial plants requiring water supply. Design According to their constructional arrangements those pumps are produced in following workmanships: Wet sump version basic version for direct pumping from a water supply, with arrangement of discharge branches TEE under the machine room floor and/or TEV above the machine room floor. Wet sump version with an intermediate floor for buildings where it is necessary to consider increasing water level in a sump and flooding the space below the floor, there the pump is provided with a special intermediate floor closure for max. upward pressures up to 4 bar. The closure is fixed, together with sealing it incorporates even the stator anchorage at the intermediate floor. On the closure there is the discharge branch TEE placed. discharge branches may be both TEE and TEV. Pumpset consists of following main parts: Hydraulic part Column pipe Discharche elbow Bearing suspension assembly Electric motor Hydraulic part is represented by centrifugal single or multistage pump with shrouded impellers being provided with replaceable wear ring on the suction side. Shaft is supported on journal bearings, lubricated with a pumped water. Column pipe connecting the hydraulic part with the discharge elbow and bearing suspension is of steel flanged pipes where the pumpset is carried in. Shaft is supported on guide bearings. Guide bearings in the piping wet parts are of rollingcontact type, grease lubricated. The seal is of gland packing placed in the discharge elbow. Bearing suspension assembly bears the pumpset, inclusive of the electric motor and further, it may take up the rotor axial thrust through a rollingcontact bearing, that may be oil or grease lubricated. Dry sump version the pump may be supplied with a foottype suction elbow. The suction elbow sits at the bottom of the pump sump on adjustable supports facilitating both dismantling and access to the pumpset hydraulic part in the sump. Arrangement of

3 Material options Pump main parts are of following materials: Option LN Material option LU Impellers are of chrome steel, materials of further parts are the same as with the LN option. Suction and discharge cover Stage casing Discharge elbow Guidevaned casing, diffusers Impellers, wear rings Shaft Shaft sleeves Journal guide bearings Guide pipes grey cast iron grey cast iron grey cast iron grey cast iron grey cast iron carbon steel stainless steel steel and bearing rubber steel Special option Special material and design version may be manufactured following characteristics of pumped media and whole environment.these versions may be manufactured from carbon steel, stainless steel and so on. 3

4 CROSS-SECTION OF PUMP WITH DISCHARGE BRANCH UNDER FLOOR TEE PARTIAL CROSS-SECTION OF PUMP WITH DISCHARGE BRANCH ABOVE FLOOR TEV 06 Suction cover 07 Discharge casing 08 Stage casing 5 Suspension body 44 Discharge elbow 7 Diffuser Pump shaft. Shaft of column pipe.3 Shaft of discharge elbow 3 Suspension shaft 30 Impeller 30 Rollingcontact bearing housing 3 Radial ball bearing 33 Thrust ball bearing 34 Motor stool 350 Bearing housing 360. Thrust bearing cover Radial/journal bearing cover 383 Sliding guide bearing 45 Stuffing box 45 Gland 46 Gland packing 50 Wear ring 507 Thrower 56 Bearing hub 59. Shaft sleeve, suction side 59. Spacer sleeve 59.3 Shaft sleeve, discharge side 59.4 Shaft sleeve 59.5 Stuffing box sleeve 545. Stuffing box sleeve 545. Stage bush Bearing of discharge casing Column pipe bearing 636 Lubricating nipple 7 Column 840 Coupling 85 Screwed coupling 905 Connection bolt 90 Shaft nut 4

5 INFORMATIVE SELECTION CHART OF CVFV PUMPS Q [l.s ] 50-CVFV-65/ CVFV-530/ -CVFV-350/ CVFV-700/ 50CVFV65/ 00-CVFV-305/5 350CVFV460/ 7 -CVFV-600/ 9 50CVFV65/ 300-CVFV-400/ 3 350CVFV460/ CVFV-460/3 350CVFV460/3 00CVFV305/ 6 400CVFV530/ 0 00CVFV305/ 4 400CVFV530/ 8 400CVFV530/3 3 -CVFV-350/ CVFV-700/ CVFV-460/ CVFV-530/3 3 CVFV350/ 7 CVFV600/ CVFV350/ 5 CVFV600/ CVFV400/ 300-CVFV-400/8 600CVFV700/ 9 50-CVFV-65/ 300CVFV400/ CVFV-530/ 6 600CVFV700/ CVFV-460/ 0 00-CVFV-305/ 5 -CVFV-600/ H [m] 00 n = 450 min , Q [l.s ] 5

6 6 TECHNICAL AND DESIGN DATA Pump type Speed min Number of stages Discharge branch DN/PN Max. stavební délka L (m) Moment of inertia (kg/m ) versions TEE, TEV Weight (kg) Version TEE Version TEV Pump + suspension assembly m of pipe column shaft Pump Suspension UV Suspension UP m of pipe column (shaft + pipe) Suction strainer m of suction pipe 50-CVFV /0 50/0 0,45 0,3 0,000 0, /0 50/0 0,58 0,3 0,000 0, CVFV /0 00/0 9,5 0 9,5 0 0,78 0,363 0,000 0, /0 00/0 9,5 0 9,5 0 0,9 0,376 0,000 0, CVFV /0 /0 9 9,5 0,473 0,773 0,006 0, /0 /0 9 9,5 0,488 0,843 0,006 0, ,5 300-CVFV /0 300/0, ,73,304 0,000 0, , CVFV /0 350/0 350/0,5 0,5,360,830 3,950 0,006 0,000 0, CVFV /0 400/0 400/6, ,5,840 5,00 7,70 0,0086 0,050 0, CVFV /0 /6,5,5 5,50 0,790 0,050 0, CVFV /0 600/6,5 0,5 0,490 8,430 0,0300 0,

7 BASIC VERSION- WET SUMP DRY SUMP VERSION WET SUMP WITH INTERMEDIATE FLOOR VERSION CONNECTING DIMENSIONS HOLE FOR FOUNDATION FRAME GREASE GREASE CONNECTING DIMENSIONS 7

8 DIMENSIONS OF PUMPS WITH DISCHARGE BRANCH TEE Pump type 50-CVFV 00-CVFV -CVFV 300-CVFV 350-CVFV 400-CVFV -CVFV 600-CVFV A Number of stages B C D D D D 3 D 4 DN 50 DN 50 DN 50 DN 00 DN 00 DN 00 DN 00 DN 00 DN 00 DN 00 DN DN DN DN DN DN DN DN DN DN E F G 80 G 60 H h I J K L L L L 3 M N P R S T T U V U V L + L + A + L 3 + C Basic version and version with intermediate floor L + L + A + L 3 + K + J Dry sump version DN 600 DN 600 DN 600 DN DN Dimensions given in mm. Dimensions presized but not given there are variable as they depend on an electric motor type and size. They may be given on request within contract. Connecting dimensions of the pump suction branch flange are intended for PN 0. Connecting dimensions of the discharge elbow flange are intended for PN given in the Table TECHNICAL AND DESIGN DATA. L 3... using a suction pipe individually, for extension the pump total facetoface dimension. H... minimal on level necessary within the pump startingup for its thorough flooding and reliable operation. C and F.. according to individual version. 8

9 WET SUMP VERSION WITH BRANCH TEV CONNECTING DIMENSIONS 9

10 DIMENSIONS OF PUMPS WITH DISCHARGE BRANCH TEV Pump type 50-CVFV 00-CVFV -CVFV 300-CVFV 350-CVFV 400-CVFV -CVFV 600-CVFV A Number of stages B C D D D3 E F DN 50 DN 50 DN DN 00 DN 00 DN DN DN DN DN DN G H h L L L 3 T U V U V L + A + L 3 + C DN 600 DN 600 DN Dimensions are given in mm. Dimensions presized but not given there are variable as they depend on an electric motor type and size. They may be given on request within contract. Connecting dimensions of the discharge branch elbow flange are intended for PN given in the Table TECHNICAL AND DESIGN DATA. L 3... using a suction pipe individually, for lenghtening the pump total facetoface dimension. H... minimal on level necessary within the pump startingup for its thorough flooding and reliable operation. C and F.. according to individual version 0

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12 Praha Ostrava Brno SIGMA GROUP a. s. Jana Sigmunda Lutín, Česká republika , ,