WOODWARD 9908-1654

الوصف

The WOODWARD 9908-1654 is a specific configuration of a GS50 Gas Fuel Metering Valve. This valve is a crucial component for precise and reliable control of gaseous fuel flow to larger industrial gas turbines.

WOODWARD 9908-1654: GS50 Gas Fuel Metering Valve

The WOODWARD 9908-1654 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 GS50 series of gas fuel metering valves. The GS50 valves are larger and designed for higher flow rates than the GS16 or GS40, making them suitable for larger industrial gas turbine engines.

• Product Type: Gas Fuel Metering Valve
• Manufacturer: Woodward
• Part Number: 9908-1654
• Model Designation: GS50
• Key Specifications (based on Woodward’s product catalog and typical GS50 configurations):
  • Port Size: This specific part number corresponds to a 2.0 inch port size.
  • Flange Type: RF600# (Raised Face 600 Class) – This indicates the pressure rating and the type of industrial piping connection.
  • Body Material: Stainless Steel (SST) – Offers superior corrosion resistance.
  • Active Area (ACD): Typically 1.0 in² (Square Inches) for this specific part number. This refers to the effective flow area of the metering element.
  • Input Voltage: 125 VDC.
  • Certifications: “NO-SIL” (No Safety Integrity Level certification specified for this exact configuration), “NO-RTE” (No Real-Time Ethernet), “CONDUIT” (Electrical connections via conduit).
• Function: As an electrically actuated fuel valve with an on-board driver, 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 9908-1654 GS50 Gas Fuel Metering Valve is engineered for high performance and exceptional reliability in demanding gas turbine applications. Key features common to the GS series that apply to this model include:

• Electronically Actuated with On-Board Driver: The valve incorporates an on-board electronic driver module. This enables precise and rapid positioning of the internal metering element in response to control signals, ensuring accurate fuel delivery and dynamic response.
• 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. This 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.
• Robust Stainless Steel Construction: The use of stainless steel (SST) for the body and internal parts provides superior corrosion resistance and durability, making it suitable for a wider range of fuel types and harsher operating environments.
• 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.
• High Flow Capacity: As a GS50, it is designed for higher flow rates, making it suitable for larger gas turbines requiring significant fuel delivery.

Technical Specifications (for the 9908-1654 GS50)

Typical Applications

The WOODWARD 9908-1654 GS50 Gas Fuel Metering Valve is commonly found in a variety of high-performance industrial applications where precise gas fuel control for larger machines is critical:

• Large Gas Turbine Power Generation: Used for electricity generation in utility and independent power producer plants, particularly for turbines with higher power output.
• Oil & Gas Industry: On larger gas turbines driving high-capacity compressors or pumps in pipeline applications, processing plants, and offshore platforms.
• Industrial Cogeneration Plants: Where larger gas turbines are utilized for combined heat and power (CHP) generation.