渣浆泵(克莱博斯)PPT课件

1、1,2,Welcome to millMAX Pump Training for Taggart China,3,World Headquarters - Tucson, Arizona,4,10 Offices Worldwide,Santiago,Tucson,Vienna,Johannesburg,Sao Paolo,Perth,Sydney,Manila,Beijing,Shanghai,5,Problems With Conventional Slurry Pumps,6,Conventional Pump Design,7,Low Pressure,High Pressure,Sl

2、urry Natural Recirculation Path,8,Conventional flow recirculation based on clearance versus pump speed,Ref: R.J. Stepanoff Centrifugal and Axial Flow Pumps,9,Solids Concentration is Highestat Impeller Shrouds,Concentration of Slurry is Cv= 10% Concentration at Suction Shroud is Cv= 24.6,Reference: U

3、niversity of Kentucky Hydraulics Laboratory,10,Solids are Crushed Between Impellerand Pump Case, Consuming Power and Producing Wear,11,Effects of Suction-Side Recirculation,12,Suction-Side Recirculation,Wide Gap at the Front and Back,13,Grinding of Solids between the Impeller and Suction Liner or Th

4、roat Bush,14,Uneven Parts Replacement Cycles,Suction Side Liners and Impellers wear 2 to 3 times Faster than Pump Cases,15,Importance of Cyclone Performance,16,Summary of Conventional Pump Problems,Slurry recirculation on the suction side Grinding of solids between the impeller and suction liner Red

5、uced hydraulic efficiency (Er) Reduced (cyclone) performance over time High power consumption Low parts wear life Unequal maintenance cycles Unscheduled shutdowns Ball chips or tramp jams the impeller front or back side Inability to increase capacity using existing motors and drives,17,millMAX Desig

6、n Concept,Patented on-line suction side wear clearance adjustment Hybrid Sealing System maintains constant flow and pressure without increasing speed or causing motor overload,Tight clearance at wear ring prevents suction side recirculation,Wide clearance at expelling vanes prevents large solids fro

7、m being crushed,Narrow clearance at backliner ensures shaft sealing system works well,18,millMAX Design,3x2 thru 14x12 Incorporates a backliner Solid volute case Wear Ring adjustment thru the casing Water flush, centrifugal seal and vacuum-pressure gland,19,millMAX Large Pump Design,16x14 thru 28x26

8、 Incorporates a suction liner Casing with suction plate Wear ring adjustment thru the suction liner Water flush gland,20,Krebs millMAX Pump Solving the Recirculation Problem,Wide clearances at “A” prevents solids from being crushed. Tight clearances at “B” prevents suction-side recirculation. Narrow

9、 clearances at “C” ensures shaft sealing system works well,A,Wide,B,C,Tight,Narrow,21,Urethane carrier provides a seal against the intrusion of slurry. Long wearing high chrome iron wear ring seals against impeller. 4-6 jacking screws are used to adjust the wear ring forward as the pump is running,P

10、atented “Hybrid” Sealing System,22,Krebs millMAX Pump Running Clearance Adjustment,Wide,Narrow,Step No. 1 (At Start Up) Set Back Clearance by Adjusting Bearing Assembly to the Rear,Step No. 2 (During Operation) Set Front Clearance by Adjusting Wear Ring Toward Impeller,23,While the pump is running.

11、Without disconnecting the drive. Without moving the impeller and shaft assembly. Without disturbing guards or v-belt drive,Setting Clearances,Adjustments Can be Done Throughout the Service Life of the Parts,24,Impeller High Radial Vanes,Clears large solids. Prevents solids from being crushed. Reduce

12、s differential pressure at the eye of the impeller,25,Adjustable Wear Ring,Wear ring takes up clearance at the impeller. Adjusted during operation. Reduces suction side recirculation. Maintains hydraulic performance,26,External Wear Adjustment Screws,4-6 screws for on-line wear clearance adjustment.

13、 Adjusted while the pump is operating. Adjusted six to eight times during the life of the pump,27,Typical Wear Pattern on Worn Impeller,28,millMAX Power Frame,Heavy Duty Cast Pedestal External Bearing Assembly Adjustment Wide Bearing Centers Heavy Duty Shaft and Bearings Double Clamps,29,millMAX Bea

14、ring Assembly Design,30,Reverse Taper Roller Bearings,Increases Effective Load Span to Improve Life. Main Bearing Failure is Due to Over Greasing. Pumping Action of Taper Rollers Discharges Grease to the Outside Preventing Ingress of Slurry or Over Greasing of Bearing Cartridge,31,32,slurryMAX Pump,

15、33,34,HIGH PRESSURE/HIGH HEADPUMPS4 x 3-176 x 4-21,35,6x4x21 High Pressure Pump,36,6x4x21 High Pressure Pump,37,graveIMAX,38,gravelMAX Pump,39,Slurry Pump Application,40,Below BEP Operation,Mismatch between Critical Flow Angles and Impeller Vanes,At BEP Operation,Incoming Angle of Slurry is Matched

16、to Impeller Vane Angle,Oversized pumps misalign flow,41,W2,U2,C2,C2 -Absolute Flow Velocity,U2-Peripheral Velocity of Impeller,W2- Relative Velocity of Flow,BEP Operation,42,W2,U2,C2,Below BEP Operation,43,Oversized Pumps Increase Internal Slurry Velocity,44,Oversized Pumps Increase Internal Slurry

17、Velocity,45,Effect of Suction Side Wear on Pumping System Fixed Speed System,New Condition,Worn Condition,46,Effect of Suction Side Wear on Pumping System Variable Speed System,New Condition,Worn Condition,47,Glands - Shaft Seal Options,48,Water Flush Gland,GPM FrameFullLow CMC80.15 MMA140.20 MMB190

18、.30 MMC240.50 MMD301.00,Max Gland Water Requirement,49,millMAX Centrifugal Seal Low Head,Low Suction Head,Dry Gland Centrifugal Seal,50,millMAX Centrifugal Seal High Head,High Suction Head,Dry Gland Centrifugal Seal,51,Quick Release Design,52,Impeller Suction End Retainer,53,millMAX Pumps Installed

19、in Coal,54,Taggart Designed/Constructed (or upgraded) Coal Prep PlantsNorth AmericaPrairie Eagle Coal (all pumps) 12x10 thru 4x3Bluestone Ivel (all pumps) 12x10 thru 4x3Armstrong Coal (all pumps) 12x10 thru 4x3Bluestone Red Fox (all pumps) 12x10 thru 4x3Preservati Coal (all pumps) 12x10 thru 4x3Blac

20、k Beauty Corning (all pumps) 12x10 thru 4x3Night Star Coal (all pumps) 12x10 thru 4x3 HHWestern CanadaWestern Canada Coal Wolverine (all pumps) 14x12 thru 4x3Pine Valley Coal (all pumps) 12x10 thru 4x3RussiaSUEK (11 pumps) 14x12 thru 4x3Non Taggart millMAX InstallationsAlliance Resources Hopkins Co. Coal (all pumps) 14x12 thru 4x3Advent Mining (a