WOODWARD 9908-1609

الوصف

The WOODWARD 9908-1609 is a specific configuration of a GS40 Gas Fuel Metering Valve. This valve is a crucial component for precise and reliable control of gaseous fuel flow to industrial gas turbines.

WOODWARD 9908-1609: GS40 Gas Fuel Metering Valve

The WOODWARD 9908-1609 is an essential part of a turbine’s fuel system. It’s designed to accurately meter and control the flow of gaseous fuel into the combustion chamber, which is paramount for efficient, stable, and compliant turbine operation.

Product Overview

This particular part number represents a specific variant within Woodward’s robust GS40 series of gas fuel metering valves. The GS series valves are highly regarded for their durability and ability to handle diverse gaseous fuel types, including those that might contain contaminants.

• Product Type: Gas Fuel Metering Valve
• Manufacturer: Woodward
• Part Number: 9908-1609
• Model Designation: GS40
• Key Specifications (based on Woodward’s product catalog):
  • Port Size: 1.5 inches
  • Flange Type: RF600# (Raised Face 600 Class) – This indicates the pressure rating and the type of industrial piping connection.
  • Body Material: Stainless Steel (SST)
  • Active Area (ACD): 0.75 in² (Square Inches) – This refers to the effective flow area of the metering element.
  • Input Voltage: 125 VDC
  • Connections: Conduit Connections (for electrical wiring)
• Function: This electronically actuated valve precisely controls the flow of gaseous fuel based on a command signal from a turbine control system (like a Woodward MicroNet or NetCon controller). It ensures the correct amount of fuel is delivered for all operating conditions, including start-up, acceleration, load changes, and steady-state operation.

Detailed Product Description

The Woodward 9908-1609 GS40 Gas Fuel Metering Valve is engineered for high performance and exceptional reliability in demanding gas turbine applications. Key features common to the GS series, and thus found in this specific model, include:

• Electronically Actuated with On-Board Driver/Positioner: The valve includes an integrated electronic positioner controller. This allows for precise and rapid positioning of the internal metering element in response to the control system’s command signal, ensuring accurate fuel delivery and dynamic response.
• Self-Cleaning, Shear-Type Metering Action: A hallmark of the GS series is its unique “shear-type” metering action. This design actively cleans the metering port, preventing performance degradation from deposits of gas condensates, contaminants, or system debris. This is a significant advantage, particularly when dealing with “sour gas” or other fuels that may contain impurities, extending service intervals.
• Single Moving Part Design: Many GS series valves feature a design where the fuel-metering element, actuator rotor, and often a position feedback resolver are mounted on a single, solid shaft. This design minimizes the number of wear parts, which greatly enhances reliability and longevity.
• Robust Stainless Steel Construction: The use of stainless steel (SST) for the body provides superior corrosion resistance and durability, making it suitable for a wider range of fuel types and harsher operating environments.
• Precision and Repeatability: The valve delivers highly accurate and repeatable fuel flow control, which is essential for maintaining turbine speed, power output, compliance with emissions regulations, and overall operational efficiency.
• Safety Features: Designed with safety in mind, it often includes features like redundant position feedback resolvers and an integral failsafe spring to maximize reliability and safety, including fast closure for emergency shutdowns.

Technical Specifications (for the 9908-1609 GS40)

Typical Applications

The WOODWARD 9908-1609 GS40 Gas Fuel Metering Valve is commonly found in a variety of high-performance industrial applications:

• Gas Turbine Power Generation: Controlling fuel flow to gas turbines used for electricity generation in utility and independent power producer plants.
• 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 generation.
• Applications with Contaminated or Corrosive Gas Fuel: Its self-cleaning design and stainless steel construction make it particularly well-suited for environments with “sour gas” or other fuels containing impurities or corrosive elements.