WOODWARD 9908-1666

الوصف

The WOODWARD 9908-1666 is a specific configuration of a GS16 Gas Fuel Metering Valve. This valve is a crucial component designed for precise and reliable control of gaseous fuel flow to industrial gas turbines.

WOODWARD 9908-1666: GS16 Gas Fuel Metering Valve

The WOODWARD 9908-1666 plays a vital role in a turbine’s fuel system. It’s engineered to accurately meter and control the flow of gaseous fuel into the combustion chamber, which is essential for efficient, stable, and environmentally compliant turbine operation.

Product Overview

This particular part number represents a specific variant within Woodward’s robust GS16 series of gas fuel metering valves. The GS16 valves are known for their robust design, high torque, and ability to handle various types of gaseous fuels, including those with contaminants. They are particularly suitable for industrial gas turbine engines with maximum power ratings between 10 and 50 MW.

• Product Type: Gas Fuel Metering Valve
• Manufacturer: Woodward
• Part Number: 9908-1666
• Model Designation: GS16
• Key Specifications (based on typical GS16 configurations and Woodward documentation):
  • Port Size / Metering Area: The GS16 series offers a few standard metering port areas: 1.00 in² (645 mm²), 1.50 in² (968 mm²), and 2.00 in² (1290 mm²). This specific part number will correspond to one of these, typically determined by the required flow capacity for a particular turbine application.
  • Flange Type: Typically uses ANSI Class 600 RF Flanges to match industrial piping requirements.
  • Input Voltage: Likely 24 VDC (18-32 VDC, which is common for GS16 models with on-board drivers).
  • Control Interface: Often accepts a 4–20 mA current signal or a DeviceNet™/CANopen interface for valve position command.
  • Body Material: Often features stainless steel housing and internal parts in contact with gas for enhanced durability and corrosion resistance.
• Function: As an electrically actuated fuel valve with an on-board electronic position controller, it precisely controls the flow of gaseous fuel based on command signals from the turbine’s electronic control system (e.g., a Woodward MicroNet or NetCon controller). This ensures optimal fuel delivery for start-up, acceleration, load changes, and steady-state operation, contributing to reduced NOx emissions in Dry Low Emission (DLE) turbines.

Detailed Product Description

The Woodward 9908-1666 GS16 Gas Fuel Metering Valve is engineered for high performance and exceptional reliability in demanding gas turbine applications. Key features common to the GS16 series that apply to this model include:

• Integrated Electronic Position Controller: The valve incorporates an on-board electronic controller module. This enables precise and rapid positioning of the internal metering element in response to control signals, ensuring accurate fuel delivery and dynamic response. This integration simplifies system packaging and installation by eliminating the need for an external driver.
• Self-Cleaning, Shear-Type Metering Action: A hallmark of the GS series, this unique design actively cleans the metering port. This prevents performance degradation caused by deposits of gas condensates, contaminants, and system debris, which is crucial for extending operational periods between overhauls, especially with varied or less-than-ideal fuel gas quality.
• Single Moving Part Design: The valve’s design typically features a single moving part where the fuel-metering element, actuator rotor, and position feedback resolver are mounted on a single solid-piece shaft. This minimizes wear parts, greatly enhancing reliability and longevity by eliminating backlash and providing virtually infinite valve positioning resolution.
• High Torque Actuation: The GS16 utilizes a high-torque actuator with rare earth permanent magnets, providing robust actuation forces within a compact size. This ensures reliable operation even with variations in gas pressure.
• Precision and Repeatability: By using a spherical fuel metering element with a precision-machined port and high-precision resolvers for position feedback, the valve achieves highly accurate and repeatable fuel flow control. This is vital for maintaining turbine speed, power output, and emissions compliance.
• Robust Shut-off Capability: The valve provides a positive flow shut-off rating that often exceeds ANSI B16.104 Class III requirements, ensuring safe shutdown when commanded.
• Hazardous Location Certification: GS16 valves are typically certified for use in hazardous locations, making them suitable for environments where flammable gases may be present. They also often include discrete fault output and independent shutdown capabilities for enhanced safety.

Technical Specifications (General for GS16, applies to 9908-1666)

Typical Applications

The WOODWARD 9908-1666 GS16 Gas Fuel Metering Valve is commonly found in a variety of high-performance industrial applications where precise gas fuel control is critical:

• Gas Turbine Power Generation: Used for electricity generation, especially in applications requiring efficient and low-emission operation (DLE turbines).
• Oil & Gas Industry: On gas turbines driving compressors or pumps in pipeline applications, processing plants, and offshore platforms.
• Industrial Cogeneration Plants: Where gas turbines are utilized for combined heat and power (CHP) generation.
• Aeroderivative Gas Turbines: Its compact design and high performance make it suitable for certain aeroderivative applications.