Category: Woodward

The in-Pulse ll manages the core fuel system and injection events for many EFl fuelsystems,

including electronic unit injectors and pumps (EUl/EUP), common railsystems (C-R),

$OGAV™ Solenoid Operated Gas Admission Valves, micro pilotinjection systems,

and electronic rail valves (ERV).The In-Pulse ll can mount directly on the engine,

withstanding the high temperatureand vibration environment.

The In-Pulse ll can also be mounted inside nearby controlcabinets if required.

The In-Pulse ll, with the addition of an 18-channel driver board, uses the samepackaging,

digital core, software tools, communication ports, l/O, and features of the733 Digital Control.

Therefore where commonengine types utilize different fuel systems,

seamless interchangeability of the corefuel control can be easily accomplished

without redesigning the complete enginemanagement system.

We have developed a simplified injection system for dual-fuel engines

with homogeneous combustion.Since less space in the cylinder head is needed,

a suitable injection system is available for close to all engine sizes.

Features & Functionality

Despite their many advantages, such as high flexibility and operating reliability,

current dual-fuel injection systems have one disadvantage: 

They are large and complex and therefore need correspondingly large installation space.

Single-needle injection systems simplify dual-fuel engine layouts.

We have developed a simplified injection system for dual-fuel engines with

homogeneous combustion. It consists of a single fuel circuit with one high-pressure

pump plus one injector per engine cylinder.

This allows major improvements in termsof installation space and complexity.

Only one injector with one nozzle or one needle is necessary per cylinder.

The injector features a single-needle nozzle, which injects the pilot quantity

and full load in the liquid-fuel operation.

The proposed single-nozzle dual-fuel technology is expected to result in a simplified

system layout for dual-fuel engines. Due to the reduced dimensions of the injector,

less space in the cylinder head is needed and therefore, a suitable injection system

is available for almost all engine sizes.

Remaining challenges for further improvement of low NOx applications (1 g/kWh)

are enhanced spray penetration as well as spray pattern symmetry for a pilot fuel

amount below 1%. Promising measures are currently under development and will

soon be ready for engine tests.

We are also developing a new high-gas-pressure injection system for heterogeneous

combustion engines.

Pumps that are used for the injection of fuels into diesel engines rank among the

most demanding members in the family of pressure generators.

Our pumps are characterized by expertise developed over decades.

Features & Functionality

Our reliable and proven pumps are characterized by expertise developed over decades

in terms of helices (in the case of conventional pump-line-nozzle systems),

component coatings, sealing elements or valve engineering.

The same design base is the take-off point for all common-rail pumps from high-speed to 2-stroke engines.

Modular design enables simple adaptation to specific customer applications.

We deliver mechanical PLN pumps for all 4-stroke engine sizes and all fuel types:

MDO, HFO, bio-fuel, Orimulsion, among others.

Key Product Variants Include

• High-pressure pumps for 2- or 4-cylinder inline pumps. Up to 30 l/min fuel output.

Pressures up to 2.500 bar.

• Mechanical PLN pumps for all 4-stroke engine sizes and all fuel types:

MDO, HFO, bio-fuel, Orimulsion, among others.

Woodward offers a growing line of air valves that, when combined with system knowledge,

enable us to reduce cost and improve reliability. Air valves are part of a broader actuation

system which manages performance of the turbine or engine.

Features and Functionality

Woodward is a world leader in the design and manufacture of air valves and air metering

technologies across the turbine engine environment. Canted shaft designs leverage decades

of experience with reliable operation in harsh environments, including those in extreme

high temp (1400°F) and severe exhaust contamination.

Furthermore, decades of industry leading innovations in turbine engine actuation,

position sensing and servo systems provide for highly reliable and cost-effective solutions.

Key Product Variants Include

• Innovative flow body designs capable of meeting Class IV “bubble tight” sealing per

ANSI/FCI 70-2 over life in extreme environments (equates to 0.01% of rated flow).

Key Features

• A CFD led systems approach to yield significant system level cost and weight savings

without violating the most stringient envelope constraints.

• Leverage of industry leading actuator and servovalve innovations that reduce LRU

and System costs while simultaneously improving reliability.

Fast, reliable and accurate turbine control solutions with hardware and software

specifically designed for demanding turbomachinery applications for

both aeroderivative gas turbines and heavy duty gas turbines.

Available in simplex, dual and triple modular redundant configurations.

Features and Benefits

• Turbine control solutions designed for safe, accurate and reliable control in harsh environments

• Perfect solution for integrated turbine and compressor control solutions

• High-speed data logging enables optimized diagnosis and fast troubleshooting

• Simplex, dual redundant and triple modular redundant (TMR) configurations with

online (hot swap) repair capability enhance reliability and availability

• Easily integrated with plant control systems (open connectivity)

• Signal isolation provides immunity to EMI/RFI and ground loops

• Flexible and scalable solutions with incremental in-chassis or distributed I/O

• Turbine controls are designed for optimal interfacing with Woodward IIoT prepared drivers,

valves and actuators to get best performance and monitoring capabilities

Product Variants and Specifications

• MicroNet™ Plus Programmable Control

• Flex500 Programmable Control

• RTCNet, LinkNet HT Distributed I/O

• RTN Gateway

• DVP Digital Valve Positioner

• SPC Servo Position Controller

Features and Benefits

• Special seal design in the main piston valve allows long life and prevents leakage.

• Stainless steel construction ensures valve availability despite corrosive service conditions.

• ANSI Class VI shut-off capability in the reserve flow direction with a pressure differential of 500 psi (3449

kPa).

• Designed for several fuel sources: natural gas, propane, ethane, or methane.

• Closes in <0.100 seconds at 900 psig (6200 kPa).

• Rated at <10 psig (69 kPa) pressure drop at flow of 25.000 lb/h (11.340kg/h)

• Safety Integrity Level: Systematic Capability SC 3 (SIL 3 Capable)

• Up to 50% Hydrogen Compatible.

• Formerly known as the GSOV25-HT

Product Variants

• 24 VDC or 125 VDC Input Voltage Options

• Internal or External Pilot Pressure Options

• Proximity Switch with Normally Open or Closed Contacts

Description

The GSOV50 fuel isolation valve provides shutdown on a gas turbine by rapidly

halting the flow of gaseous fuel. The supply pressure is used to move a spring

loaded piston in the valve. When the valve is energized, gas pressure drives the

spring-loaded piston open, admitting fuel to the turbine. When the current signal to

the electrical solenoid is interrupted, the spring loaded second-stage piston changes

states to vent off primary control pressure. The main spring then forces the primary

piston to the seal, stopping all flow.

Product Variants

• 24 VDC or 125 VDC Input Voltage Options

• Internal or External Pilot Pressure Options

• Proximity Switch with Normally Open or Closed Contacts

Product Specifications

• Gas Supply Pressure: 100-900 psig (690-6200 kPA)

• Fuel Temperature: -4 to +350 degrees Fahrenheit (-20 to +177 degrees Celsius)

• Ambient Temperature: -4 to +250 degrees Fahrenheit (-20 to +121 degrees Celsius)

• Main Seat Forward Leakage: ANSI/FCI 70-2. Class VI

• Main Seat Reverse Leakage: ANSI/FCI 70-2. Class VI, up to 500 psid (3.448kPA) reverse pressure

differential

• Flange: ANSI 600# RF Flange

Applications

The Woodward GSOV50 fuel isolation valve is designed to provide extremely fast

shutoff of gaseous fuel flow to an industrial gas turbine engine. Gas flow is stopped

when the valve is closed, with zero leakage from inlet to outlet. The HT version can

withstand higher fuel temperatures and higher back pressures than the standard version.

It is suitable for operation with gas temperatures between –4 and +350 °F (–20 and +177 °C).

The valve can achieve ANSI Class VI shut-off capability in the reverse flow direction with

a pressure differential of 500 psi (3448 kPa).

The normally-closed valve may be used for emergency and normal shutdown

operations. The special seal design in the main piston valve allows long life and

prevents leakage. Stainless steel construction ensures valve availability despite

corrosive service conditions.

This product is suitable for use on industrial turbines in the 10 to 50 MW power

output range with single or multiple combustion fuel manifold systems.

VariStroke is Woodward’s line of linear electro-hydraulic valve actuators for operation

of steam or hydro turbine control valves. These linear actuators utilize a low-pressure,

hydraulic oil source (typically turbine lube oil) to provide its output shaft force.

Its superb accuracy and resolution make it ideal for steam valve control and related

turbine speed and load control, where turbine up-time and availability is essential.

Features & Benefits

• Precise and stable control for responsive performance

• Variable/configurable shaft lengths for various application requirements

• Patented dirt tolerant and self-cleaning technology for increased reliability

• High-torque valve and motor design (50 lbs chip shear)

• Fast slew rates/times (up to 10”/sec)

• Side-load tolerant for reducing potential oil leaks

• Integrated driver (4-20 mA) and 11-point linearization table

• Self-tuning adaptive control algorithm

Product Variants

• Cylinder Bore Sizes:

100mm (4 in)

150mm (6 in)

200mm (8 in)

250mm (10 in)

300mm (12 in)

• Configuration

Integrated

Remote

Servo Valve Only

• Cylinder – Max. Stroke

100mm (4 in)

150mm (6 in)

200mm (8 in)

250mm (10 in)

300mm (12 in)

• Action:

Double Acting

Single Acting

No Hydraulic Cylinder

• Rod End

Male Thread

Female Thread

No Hydraulic Cylinder

• Fail-Safe Direction:

Extend

Retract

No Hydraulic Cylinder

• Compliance:

ATEX Zone 1

ATEX Zone 2

Side Load Capability

A common problem with turbine actuators is oil leaking from their output shaft due to connection to

valve

rack linkages which have an arc-type of motion. This motion results in side loading of the actuator shaft,

and after long periods may result in shaft-seal wear and resultant oil leakage. Designed for a continuous

side load of up to 10% of actuator output, the VariStroke-II actuator incorporates a high-force precision

bearing and triple-seal technology on its output shaft to solve this typical application problem.

Silt Buster A patented self-cleaning feature that flushes silt and debris from the servo valve. At the interval

and amplitude selected by the user, this function  provides a very rapid motion of the servo valve spool,

allowing any silt to be flushed to the drain passage. This motion is followed immediately by a step of

equal amplitude in the opposite direction. The opposing symmetry of the impulse results in no net

change in fluid volume to the hydraulic power cylinder, and thus does not interrupt the control of the

turbine. This unique feature provides a high degree of stability, reliability, and silt resistance.