RENK-MAAG GmbHP. O. Box 3068 • Sulzer-Allee 46 • 8404 Winterthur • SwitzerlandTelephone +41 52 262 89 88 • Fax +41 52 262 89 89info@renk-maag.ch • www.renk-maag.ch

Our manufacturing and other operational activities are implemented in accordance with our internal quality assurance system and in strict compliance with ISO 9001:2008, ISO 14001:2004 and OHSAS 18001:2007.

Innovative Power Transmission

RENK-MAAG

Synchronous Clutch Coupling type HS …your compact engine translator!

Energy recovery, combined cycle technologies, cogeneration and others• Connecting expander turbines

to main drives in petrochemical plants or steel manufacturing (blast furnaces)

• Blower drives in power stations for use during starting sequence

RENK-MAAG Synchronous Clutch Coupling type HS

HS Clutch – For full positive and negative torque transmission

Power generation• Peaking power plant – Synchronous condensing – Power discharge• Combined Cycle Power Plants (CCPP)• Combined Heat and Power (CHP) plants• Compressed Air Energy Storage (CAES)

Marine applications• Combined propulsion systems such

as CODOG, COGOG, CODAG, COGAG, CODAD, etc.

•Efficiencyboosterdrivesfordiesel engine propulsion systems

The HS Clutch has a very similar synchro-nizing mechanism to the MS Clutch, but instead of the main helical toothing, it has a spur gear power transmission toothing (straight gear). The synchronizing mecha-nismisusedtofindaclean“toothtogap”position. The HS starts the screw like motion and a small front face toothing engages. Right then the hydraulic system isautomaticallyactivatedandfinishes the engagement by a pure axial shifting. As soon as the MS Clutch is fully engaged the high pressure hydraulics are de-loaded and the HS Clutch works now like a classic gear coupling, which can transmit full positive and negative torque, without dis engaging. Disengagement is carried out by the remote controlled hydraulic system, which pulls out the coupling star in a no-load situation in axial direction until it is fully disengaged and the HS Clutch is free-wheeling.

The RENK-MAAG HS Clutch understands everything in the range of 0.5 to well over 240 MW!

RENK-MAAG Synchronous Clutch Couplings are used in a wide range of applications

Input Coupling sleeve Coupling star Support shaft Synchronizing mechanism Ratchet wheel

Output Pawl carrier Pawl Piston (spring) Coupling sleeve

Input

Output

Summary

More than 50 years of experience within RENK-MAAG! Over 800 Synchronous Clutch Couplings sold!

Design

Between flanges • Standard solution• Easy assembly due to bolted connection• Lube oil supply approx 2 bar• High pressure hydraulic system

approx 5–10 bar

Input

Gas turbine (input)

Output

Generator (output)

Possible operation modes• Peak power• Condenser operation

(grid stabilisation)• Power discharge from the grid

Train arrangement

= Bearing

Input(gas turbine)

Spool piece with synchronizing mechanism

Servo mechanism

Output(generator)

• Flexible with integrated gear coupling• Engaging at low speeds <500 rpm• Gear coupling when engaged which allows

full positive and negative torque• Compact, long-lived and wear-free•Retrofitableintoexistingplants• Suitable for high torque and high speed• Wide range of application• Tailored for customer requirements

RENK-MAAG clutch design allows for a very short and compact shaft train, so overall plant costs (including foundation, civil works, cranes etc.) are reduced com- pared to other solutions. Finally this even allowstoretrofittheRENK-MAAGMS/HSSynchronous Clutch into existing plants.

• In the optimal case no support bearings are required.

• Small support bearing if required by rotor dynamics (shaft overhangs) possible.

•Noadditionalflexiblecouplingsarerequired.

This offers the grid and plant operators to improve the utilization of the existing infrastructure, and so to increase the flexibility and profitability.

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Product portfolio

MS- -Q HS- -E ZD- -HAdd. features Add. features Add. features

MS ZD

Engaging automatically• Flexible with integrated

gear coupling• Engaging at any

synchronous speed• Disengaging at any

speed with negative torque• Various additional features• Small drag when disengaged• E.g. Combined Cycle Power

Plants (CCPP), synchronous condensors, propulsion trains, tandem fan drives

Engaging on demand• Flexible with integrated

gear coupling • Pure gear coupling when

engaged which allows full positive and negative torque

• Engaging at low synchronous speeds

• Disengaging at small load(on demand and at any speed)

• Very small drag when disengaged

• E.g. GT – Generator: Peak Power /Synchronous Condenser Operation

Completely disengageable• Flexible with integrated

gear coupling • Pure gear coupling when

engaged which allows full positive and negative torque

• Engaging at standstill• Disengaging at small load

(on demand and at any speed)• No drag when disengaged• E.g. Combined Heat

and Power (CHP) plants, fan drives

* RENK-MAAG supplies services and spare parts for all MAAG couplings. RENK Rheine specializes in non-shiftable gear couplings.

Various types used asflexiblecouplings.

HS

Synchronous Clutch Coupling

ShiftableNon-shiftable *

RENK-MAAG provides new products, services, inspections, repairs and spare parts (incl. complete couplings) for all types of MAAG/RENK-MAAG couplings.

Additional features (more features on request!)A For starter drivesD Disengaging at low speedsE EncasedF Isolating device (pawl free)H Hydraulically operated (e.g. pawl free)J Insulation

L Lever activated (manually)N Engagement at low speedP Reverse protectionQ Quill-shaft arrangementR Locking mechanismT For turning gears

E.g. 390 mm pitch diameter of gear coupling, quill-shaft arrangement

M

H

Z

S

S

D

39

88

50

Q

E

H

E.g. 880 mm pitch diameter of gear coupling, encased

E.g. 500 mm pitch diameter of gear coupling, hydraulically activated

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Additional features

Additional features

Additional features

Gear couplings

Basic designM Mechanical automatic disengagement /engagementH Hydraulically operatedS Synchronous clutch couplingZ Gear coupling (Zahnkupplung)D Disengageable

Basic design

Coupling size

RENK-MAAG GmbHP. O. Box 3068 • Sulzer-Allee 46 • 8404 Winterthur • SwitzerlandTelephone +41 52 262 89 88 • Fax +41 52 262 89 89info@renk-maag.ch • www.renk-maag.ch

Our manufacturing and other operational activities are implemented in accordance with our internal quality assurance system and in strict compliance with ISO 9001:2008, ISO 14001:2004 and OHSAS 18001:2007.

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016_

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RENK-MAAG gear couplings