Variable Speed Scoop Coupling

Fluidomat SC

Scoop Controlled Variable Speed Fluid Couplings,Fluid Couplings for Internal Combustion Engine.
Specifications View 360°

DESCRIPTION

FLUIDOMAT -SC is a variable speed fluid coupling providing stepless speed variation in a wide range when connected to fixed speed electric motor. The speed variation is obtained by varying the oil filling in coupling through a sliding scoop tube when in operation.
It offers flexibility in controls as it can respond to various electric, pneumatic or hydraulic signals and it is compatible with all types of controllers like pneumatic, hydraulic, electronic, electrical or manual. Beside it offers all the advantages of constant speed fluid coupling like load limiting, absorption of shock loads, torsional loads and vibrations, smooth acceleration etc. Its built-in safety arrangements make it fool-proof during operation.
Fluidomat SC offers advantages like no load starting of motor, controlled starting torque for machine acceleration, continuous declutching, stepless speed variation and synchronizing of motors in multidrive units, load limiting in a very wide range for safety of motors and machine.

ADVANTAGES

Due to its constructional features Fluidomat - SC offers many distinct advantages like:
  • Self supported statinary housing, hence no weight experienced by driving or driven shafts and does not load motor and machine bearings.
  • Rugged design for all site conditions.
  • Rotating mass is not exposed, hence, no hazzards of accidents.
  • Easy mountings of various controls, oil connections, sensors etc.
  • Higher misalignment capacity and choice of flexible couplings.
  • Easy maintenance and accessibility by opening top cover.
  • Continuous declutching possible.
  • Very low vibration and noise level.
  • Ease of adopting various type of control and compatible with them.
  • Scoop tube position can be governed very easily for speed control.
  • Easy operation of scoop tube in auto or manual mode.
  • Labyrinth seals on shaft ensures no leakage from shaft ends.

OPERATION

The sliding scoop tube governs the oil level in the working circuits depending on its (scoop tube) position between 0% to 100%. By varying the oil level in the working circuit the torque transmission capacity of the coupling varies, thus changing the slip of the coupling and provides stepless speed variation in a wide range. The heat generated in the coupling is picked up by the circulating oil which is cooled by oil cooler provided in the oil circiut. Fluidomat SC provides very useful stepless speed regulation in the range of 5:1 for centrifugal loads like fans and pumps, 2:1 for constant torque loads like conveyors and 1.4:1 for rising torque loads. It is also very useful for continuous declutching of machine with motor running.

RATING TABLE FOR SC & SC-HT

Maximum Ratings in KW at Different Input Speeds RPM.
MODEL 500 600 750 900 1000 1200 1500 1800 3000
SC-6 9 12 21 40 70 125
SC-7 5 10 17 23 39 75 130 300*
SC-8 7 14 24 32 56 100 173 500*
SC-9 13 25 44 60 104 205 300
SC-9 HT* 355* 1250*
SC-10 25 49 85 116 200 350 425*
SC-10 HT ST 605 2600
SC-11 A 35 68 118 162 280 500 680
SC-11 51 100 172 236 408 725 1100
SC-12 90 176 304 416 720 1250 2000*
SC-13 74 128 250 432 592 1024 1700 2300*
SC-880 111 192 375 648 890 1600 2300* 2600*
SC-14 252 425 850 1468 1850 2300
SC-14 HT* 370* 640* 1250* 1525* 2090* 3000*
SC-16 740 1280 2500 3000 3300
SC-1330 1100 1900 3200 3840

RATING TABLE FOR SC & SC-HT

DIMENSION TABLE SC & SC-HT
MODEL B A1 C/C A2C/C H1 DRY WT.(Kgs) OIL QTY.(ltrs)
SC-6 695 295 680 460 435 60
SC-7 855 370 680 460 570 60
SC-8 875 370 915 500 700 95
SC-9 1015 440 915 500 766 95
SC-9 HT 1050 590 1340 630 900 245
SC-10 1135 560 1075 560 1000 135
SC-10 HT ST 1456 750 1650 765 1400 530
SC-11 A 1150 560 1075 585 1030 135
SC-11 A 1260 590 1340 630 1275 245
SC-12 1267 590 1340 695 1450 245
SC-13 1540 590 1340 695 1750 280
SC-13 1540 750 1650 765 1830 530
SC-880 1588 750 1650 765 2400 530
SC-880 1588 750 1650 1000 2530 700
SC-14 1640 850 1800 1000 3900 800
SC-14 HT 1950 1065 1940 1000 4100 850
SC-16 2100 1140 2300 1100 5000 900
SC-1330 1950 1066 2100 1200 7500 1500

VARIABLE SPEED SCOOP COUPLING MODEL


OIL FLOW CIRCUIT DIAGRAM


CHARACTERISTICS CURVE

ENERGY SAVING THROUGH FLUIDOMAT SC COUPLINGS :
Fluidomat SC provides large energy saving in various drives. In centrifugal machines the discharge of fluid is proportional to the machine speed. The discharge can be varied either by throttle control or by speed control. In throttle control, because additional pressure is exerted therefore the machine requires high energy consumption and also causes high rate wear of pump fan. On the other hand, if speed of pump/fan is reduced to control the discharge then power demand reduces by cube of speed and therefore large amount of energy is saved. Fluidomat SC offers stepless speed variation in range of 5:1 for centrifugal loads and saves high amount of energy. It thus earns money through energy savings.

FAN AND FLUIDOMAT-SC TYPICAL POWER SPEED CHARACTERISTICS

curve 1 Shows the power required by a centrifugal machine at different speeds. In the same figure the power required by the system is shown if Fluidomat SC is used for speed variations. Fluidomat SC is an ideal equipment for speed variations of centrifugal machines & thus discharge control. Slip power losses in the coupling are also shown in the characteristic curve.

POWER REQUIRED FOR CENTRIFUGAL FAN & POWER SAVING BY FLUIDOMAT-SC

Curve 2 shows the typical example of power saved at different discharge values when Fluidomat SC is used. The power saving can be in the range of 10-40% depending on operation and flow requirements. Since Fluidomat SC starts motor on NO LOAD therefore motor can be rated for consumed power and not for starting duty. By reducing the power rating of the motor, energy is further saved due to improved efficiency and power factor of the motor. At the same time, high cost slipring motors can be replaced by rugged squirrel cage motors which are low in cost and require very low maintenance.

MOTOR & MACHINE SIDE OF FLUIDOMAT SC