Hydraulic amplifiers
The HA series Hydraulic Amplifiers from HEINZMANN Australia provide the force to operate heavy control valves of steam turbines or fuel control linkages of large reciprocating engines. This may be done via a mechanical input (i.e. HEINZMANN all electric actuator) or via a 0 – 200 mA input signal to the built in internal actuator. Our amplifiers are characterised by minimal overshoot, iron casing cast and billet power piston & output shaft. The output shaft supports bush (oil fed). Anti-wear coating is designed for longer service life.
HEINZMANN Australia offers a cost effective direct “bolt-on” replacement for Woodward 5¼” and 7¼” hydraulic amplifiers.
Key Features
- Product accepted by SNM, Allen (WEIR) & NG steam turbine OEMs
- Main housing made from high spec 500-7 Nodular Graphite Iron (Ductile Iron)
- Power piston & output shaft made from EN36, for extra durability and reliability
- Output shaft has oil fed support bush, for improved side loading
- High efficiency oil motor, excellent performance even in harsh oil conditions
- Internal actuator oil accumulator, for improved stability (“E” only)
- Optional oil filter, for improved service life and reliability (“E” only)
- Minimal overshoot
- Shock resistant cast iron casing
- Wear preventative coating for extended service life
Gas Turbine Air Controls
Air control is becoming more and more necessary to meet the emission requirements for operational GTs. It improves the starting reliability and load flexibility of gas turbines. The tighter demands of necessary emission control call for highly accurate and responsive air control VGV or VIGV control is vital, with OEMs adding multiple independent drives. Air bleed for compressor control and anti icing is vital.
In the last ten years HEINZMANN has supplied hundreds of electric guide vane servo systems to a gas turbine OEM in Europe for machines from 4 through 20 MW shaft power. HEINZMANN now offers electric bleed air control valves for the same range of turbines based on its high-performance electric actuation technology.
Ignition
PROMETHEUS is an igniter power system for gas turbines. Used in conjunction with standard surface effect spark plugs it produces an intense spark twice a second while energised from a nominal 24 VDC battery power supply.
Energy conversion and utilisation in the spark plug is very high and compared with alternative systems. The spark projects further out from the tip of the plug providing more successful ignition considering air fuel ratio and pressure. This is especially true on liquid fuelled turbines with pressure atomised burner nozzles.
