WOODWARD 9908-1608

الوصف

The WOODWARD 9908-1608 is a specific configuration of a GS40 Gas Fuel Metering Valve. This is a critical component used for precise control of gas fuel flow to industrial gas turbines.

WOODWARD 9908-1608: GS40 Gas Fuel Metering Valve

The WOODWARD 9908-1608 is an integral part of a turbine’s fuel system, designed to accurately meter and control the flow of gaseous fuel into the combustion chamber. Its precision and reliability are paramount for efficient and stable turbine operation.

Product Overview

This part number is a specific variant within Woodward’s GS40 series of gas fuel metering valves. The GS series valves are known for their robust design and ability to handle various types of gaseous fuels, including those with contaminants.

• Product Type: Gas Fuel Metering Valve
• Manufacturer: Woodward
• Part Number: 9908-1608
• Model Designation: GS40
• Key Specifications (from Woodward catalogs for this PN):
  • Port Size: 0.75 inches
  • Flange Type: 600# RF Flange (Raised Face) – This indicates the pressure rating and connection type for industrial piping.
  • Input Voltage: 125 VDC
  • Connections: Conduit Connections (for electrical wiring)
• Function: Electronically actuated valve that precisely controls the flow of gaseous fuel based on a command signal from a turbine control system (e.g., a Woodward MicroNet or NetCon controller). It ensures the correct amount of fuel is delivered for starting, acceleration, load changes, and steady-state operation.

Detailed Product Description

The Woodward 9908-1608 GS40 Gas Fuel Metering Valve is engineered for high performance and reliability in demanding gas turbine applications. Key features that define the GS series, and thus this specific model, include:

• Electronically Actuated with Positioner: The valve likely features an on-board electronic positioner controller. This allows for precise and rapid positioning of the metering element in response to the control system’s command signal, enabling accurate fuel delivery.
• Self-Cleaning, Shear-Type Metering Action: A notable feature of the GS series is its “shear-type” metering action. This design helps keep the metering port free from performance-limiting deposits of gas condensates, contaminants, and system debris. This is especially beneficial when dealing with “sour gas” or other contaminated fuel sources, contributing to extended periods between overhauls.
• Single Moving Part Design: Many GS series valves utilize a design with a single moving part where the fuel-metering element, actuator rotor, and often a position feedback resolver are mounted on a single solid-piece shaft. This minimizes wear parts and enhances reliability.
• Robust Construction: Built to withstand the harsh conditions of gas turbine environments, including variations in fuel composition, pressure, and temperature.
• Precision and Repeatability: The valve provides highly accurate and repeatable fuel flow control, which is essential for maintaining turbine speed, power output, emissions compliance, and overall operational efficiency.
• Safety Features: Often includes features like fast closure for safe shutdown in emergency situations.

Technical Specifications (for the 9908-1608 GS40)

Typical Applications

The WOODWARD 9908-1608 GS40 Gas Fuel Metering Valve is commonly found in:

• Gas Turbine Power Generation: Controlling fuel flow to gas turbines used for electricity generation.
• 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 used for combined heat and power generation.
• Applications with Contaminated Gas Fuel: Its self-cleaning design makes it particularly suitable for environments with “sour gas” or other fuels containing impurities.