Variable Speed Coupling: Type SC

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. 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.

Variable Speed Coupling: Type SC

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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.

  • INPUT SHAFT
  • UPPER HOUSING
  • IMPELLER
  • ROTOR
  • PRIMARY CASING
  • SECONDARY CASING
  • SCOOP TUBE
  • OUTPUT SHAFT
  • BOTTOM HOUSING
  • LABYRINTH SEAL WITH OIL SEAL
  • WORKING CIRCUIT

FLUIDOMAT - SC consists of a fluid coupling housed in a self-supported stationary housing having a built-in oil Sump. Oil is continuously introduced in the working circuit (11) of fluid coupling through an oil pump. The oil circulates through the working circuit and finally passes to the secondary casing (6) and is collected by a sliding scoop tube (7). The position of scoop tube governs the oil level in the working circuit, thus controlling the speed. The position of sliding scoop tube can be governed through suitable actuator and can also be operated manually. On the input and output ends, suitable flexible couplings are provided for the shafts connections. Labyrinth Seals (10) provided on input and output shaft is an effective barrier and ensures no leakage from shaft ends.

OIL FLOW CIRCUIT DIAGRAM:

OIL FLOW CIRCUIT DIAGRAM

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.

CHARACTERISTIC CURVE (AT VARIOUS SCOOP TUBE POSITIONS BETWEEN 100 % & 0%)

Characteristic 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

FAN AND FLUIDOMAT-SC TYPICAL POWER SPEED CHARACTERISTICS

The 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

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.


Dimension Table
MODEL B A1 C/C A2 C/C H1 Dry Wt. (Kgs) Oil Qty (Lts)
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 580 1000 135
SC-10 HT 1270 750 1650 695 1250 530
SC-11A 1150 560 1075 585 1030 135
SC-11 1260 590 1340 630 1275 245
SC-12 1285 590 1340 695 1450 245
SC-13 1410 590 1340 695 1750 280
SC-13 1410 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-14HT 1950 1065 1940 1000 4100 850
SC-16 2100 1140 2300 1100 5000 900
SC-1330 1950 1066 2100 1200 7500 1500

 

 

RATING OF SC & SC-HT COUPLING IN KW

Input Speeds in 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 - - - - - - - 350* 1250*
SC-10 - 25 49 85 116 200 350 425* -
SC-10 HT - - - - - - - 605* 2600*
SC-11A - 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-14 252 435 850 1468 1850 2300 - - -
SC-14 HT* 370* 640* 1250* 1525* 2090* 3000* - - -
SC-16 740 1280 2500 3000 3300 - - - -
SC-1330 1200 2073 3200 3840 - - - - -
* Heat Treated Casting

ADVANTAGES:

  • Due to its constructional features Fluidomat - SC design offers many distinct advantages like :
  • Self - supported stationary 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 hazards of accidents.
  • Easy mounting 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.



 News


List of Prestigious Project Orders Received

Fluidomat has proven track record of reliability of its fluid couplings through designs, strong quality assurance and continuous R & D developing new and higher sizes of couplings continuously since 1971.

Fluidomat has supplied more than 900 Scoop Control Couplings and several thousand constant fill fluid couplings on variety of applications in allsectors of industry including Coal base Power Plants, Steel, Cement, Paper, Chemical & fertilizer industry, Petrochemical Industry,Underground & Open Pit Coal and Mines, Harbor Handling and Nuclear Power Generation Plants in India and Abroad.


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Prestigious Order for Power Project of Adani Power Limited, (Gujarat) for their Conveyor Application.

Fluidomat bagged prestigious order through Elecon Engineering, VallabhVidhya Nagar for its Variable Speed Scoop Controlled fluid coupling for Power Project of Adani Power Limited, (Gujarat), India for their Coal Conveyor Application.

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Prestigious Order for Power Project of Mundra Port & SEZ LTD, Mundra (Gujarat) for their Conveyor Application.

Fluidomat bagged prestigious order from of Mundra Port & SEZ Ltd, (Gujarat), India for its Variable Speed Scoop Controlled fluid coupling for Harbour Handling facilities of Mundra Port (Gujarat), India for their Coal Conveyor Application.

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Prestigious Order for Power Project of Mundra Port & SEZ LTD, Mundra (Gujarat) for their Conveyor Application.

Fluidomat bagged prestigious order through Elecon Engineering, VallabhVidhya Nagar for its Variable Speed Scoop Controlled fluid coupling for Harbour Handling facilities of Mundra Port & SEZ Ltd, (Gujarat), India for their Coal Conveyor Application. 

» more


Prestigious order for Cement Plant in Indonesia.

Fluidomat bagged prestigious order for manufacture and supply of its Variable Speed Scoop Controlled fluid couplings for INDOCEMENT, TARJUN PLANT, INDONESIA for Centrifugal Fan for their Dust Collection System Application.  Fluidomat provided them Engineering solution by offering them custom built Variable Speed Fluid Coupling.
   

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Prestigious Order for VEDANTA ALUMINIUM, LANGIGARH (ORISSA) for their Hammer Mill Application.

Fluidomat bagged prestigious order from Vedanta Aluminium, Langigarh, Orissa for manufacture and supply of its Fixed Speed fluid coupling for Hammer Mill Application.

» more

 

 Contact Us

FLUIDOMAT LTD
7C- 8J, Industrial Area 1,
Agra Bombay Road, Dewas – 455001
Madhya Pradesh INDIA.

Phone :
+91-7272-268100 (EPBAX) /
                  +91-7272-258582 / 258583
Fax      : +91-7272-258581

E-mail : info@fluidomat.com
               fluidomat@bsnl.in

Contact Person :SUNDEEP SHARMA
(Business Head - International Market)

E-mail : sundeep@fluidomat.com
              
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