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WOODWARD 8516-187: TG to TG611-17 Governor Conversion Kit (4000 RPM, CCW, ATEX, w/ OTD)
The Woodward 8516-187 is a conversion kit specifically designed to upgrade older Woodward TG mechanical-hydraulic governors (typically TG-17 models) to the advanced TG611-17 standard. This kit is configured for high-speed applications, operating with a counter-clockwise (CCW) rotation at 4000 RPM, and includes a crucial Overspeed Test Device (OTD), all while maintaining ATEX compliance for hazardous environments.
Product Overview
- Product Type: Governor Conversion Kit
- Manufacturer: Woodward
- Primary Function: Upgrades existing TG governors (specifically TG-17) to the TG611-17 standard, significantly enhancing safety, performance, and compliance for various industrial applications.
- Target Model: TG611-17 (Screw Speed Set)
- Rated Speed: 4000 RPM
- Rotation Direction: Counter-Clockwise (CCW)
- Key Feature: Includes Overspeed Test Device (OTD)
- Environmental Compliance: ATEX compliant (suitable for potentially explosive atmospheres)
- Rated Speed @ 2% Droop: 4035 RPM
Detailed Description
Woodward mechanical-hydraulic governors are critical for maintaining stable and safe operating speeds in turbine and other prime mover applications. To meet evolving industry standards and increasingly stringent safety regulations, upgrading older governor models is often essential. The Woodward 8516-187 kit offers a precise solution for this modernization.
This conversion kit transforms an existing TG governor into a more capable TG611-17 governor, integrating several critical features:
- Overspeed Test Device (OTD): This essential safety mechanism allows for safe, routine testing of the governor’s overspeed protection function. Operators can verify that the overspeed trip system is fully functional without putting the prime mover at risk by actual overspeeding. This significantly enhances operational safety and system reliability.
- ATEX Compliance: This certification is crucial for equipment operating in environments where explosive atmospheres may be present (e.g., in oil & gas facilities, chemical plants, or certain power generation sites). It confirms that the components meet stringent European Union directives for safety in hazardous locations.
- Counter-Clockwise (CCW) Rotation: The kit is precisely engineered for governors with a counter-clockwise drive shaft rotation. This specification is critical for proper mechanical integration and operation with the specific design of the turbine or engine being controlled.
- 4000 RPM Operation: This kit is compatible with governors operating at a rated speed of 4000 RPM, a common high speed for various industrial turbines and engines.
- Speed Droop Control: The TG611-17 governor operates using a speed droop control characteristic. This feature is fundamental for ensuring stable load sharing when multiple prime movers and generators are operating in parallel, and it plays a vital role in maintaining overall grid stability.
Technical Specifications
Typical Applications
The Woodward 8516-187 conversion kit is primarily utilized in:
- High-Speed Power Generation Facilities: For modernizing governors on turbines or engines operating at 4000 RPM, ensuring continued safe operation and adherence to current standards.
- Oil & Gas Installations: Where prime movers control critical equipment in potentially hazardous environments, requiring precise speed control and ATEX compliance.
- General Industrial Processes: For upgrading existing industrial prime movers to enhance their speed governing capabilities and safety features in high-speed applications.
Related Products
The 8516-187 kit is part of a comprehensive series of Woodward TG governor conversion kits. Other kits in this series, offering variations based on speed, rotation, and specific droop settings, include:
- Woodward TG-13 and TG-17 Governors: These are the older mechanical governors that are upgraded by these conversion kits.
- Woodward TG611-13 and TG611-17 Governors: These are the modernized versions that the kits help achieve.
- WOODWARD 8516-188: A similar conversion kit for the TG611-17, 4000 RPM, CW rotation, ATEX, with OTD (and the same rated speed of 4035 RPM @ 2% Droop). This indicates that 8516-187 and 8516-188 form a pair for CCW and CW rotation at this specific RPM and droop setting.
- Other kits like 8516-174 through 85186 cater to different RPM ranges (2400 RPM, 3200 RPM, 4000 RPM, and 6000 RPM) and include both TG611-13 and TG611-17 target models, with various combinations of CW/CCW rotation and droop settings.
