WOODWARD 9908-1669

الوصف

The WOODWARD 9908-1669 is a specific configuration of a GS50 Gas Fuel Metering Valve. This valve is a crucial component designed for precise and reliable control of gaseous fuel flow to larger industrial gas turbines.

WOODWARD 9908-1669: GS50 Gas Fuel Metering Valve

The WOODWARD 9908-1669 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 critical 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 than the GS16 or GS40 models, designed to handle significantly higher flow rates, making them suitable for high-power industrial gas turbine engines.

• Product Type: Gas Fuel Metering Valve
• Manufacturer: Woodward
• Part Number: 9908-1669
• Model Designation: GS50
• Key Specifications (based on Woodward’s product catalog):
  • Port Size: 2.0 inches
  • Flange Type: SAE Code 61 Flange (a common standard for hydraulic and fluid power connections)
  • Body Material: Aluminum
  • Active Area (ACD): 1.5 in² (Square Inches) – This refers to the effective flow area of the metering element, allowing for substantial fuel flow.
  • Input Voltage: 24 VDC
  • Electrical Connections: Connectors (indicating it uses electrical connectors rather than conduit entry for wiring)
  • Certifications/Features: “NO-SIL” (No Safety Integrity Level certification specified for this exact configuration), “NO-RTE” (No Real-Time Ethernet interface).
• 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 all phases of turbine operation, from start-up and acceleration to load changes and steady-state running, contributing to reduced NOx emissions in modern turbine designs (like Dry Low Emission – DLE – turbines).

Detailed Product Description

The Woodward 9908-1669 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 integrated 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 essential for turbine stability.
• Self-Cleaning, Shear-Type Metering Action: A distinctive feature of the GS series, this unique design actively cleans the metering port. This prevents performance degradation caused by deposits of gas condensates, contaminants, or system debris, which is crucial for extending operational periods between overhauls, especially when dealing with varied or lower-quality fuel gas.
• Single Moving Part Design: The valve’s design typically features a single moving part where the fuel-metering element, actuator rotor, and position feedback resolvers are mounted on a single, solid shaft. This minimizes the number of wear parts, significantly enhancing reliability and longevity.
• Aluminum Body Construction: The use of an aluminum body often indicates a focus on weight reduction while still providing robust performance for specific applications.
• Precision and Repeatability: By employing 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 model with a 1.5 in² Active Area, it is specifically designed to handle the substantial fuel flow requirements of large industrial gas turbines.

Technical Specifications (for the 9908-1669 GS50)

Typical Applications

The WOODWARD 9908-1669 GS50 Gas Fuel Metering Valve is commonly found in a variety of high-performance industrial applications where precise and high-capacity gas fuel control is critical:

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