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WOODWARD 8516-181: TG to TG611-13 Governor Conversion Kit (4000 RPM, CCW, ATEX, w/ OTD)
The Woodward 8516-181 is a conversion kit specifically designed to upgrade older Woodward TG mechanical-hydraulic governors (typically TG-13 models) to the enhanced TG611-13 standard. This kit is configured for high-speed applications and includes crucial safety features, operating with a counter-clockwise (CCW) rotation at 4000 RPM, and features an Overspeed Test Device (OTD) while being ATEX compliant.
Product Overview
- Product Type: Governor Conversion Kit
- Manufacturer: Woodward
- Primary Function: Upgrades existing TG governors to TG611-13, significantly enhancing safety and performance.
- Target Model: TG611-13 (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: 3910 RPM
Detailed Description
Woodward mechanical-hydraulic governors are essential for precise speed control in systems utilizing turbines and other prime movers. As industrial standards evolve and safety requirements become more stringent, upgrading older governors is often necessary. The Woodward 8516-181 kit provides a robust solution for this.
This kit transforms an existing TG governor into a more advanced TG611-13, incorporating several critical features:
- Overspeed Test Device (OTD): This integral safety mechanism allows for routine, safe testing of the governor’s overspeed protection. Operators can verify the functionality of the overspeed trip without exposing the turbine or engine to dangerous overspeed conditions, thereby improving operational safety and reliability.
- ATEX Compliance: This certification signifies that the components meet strict European Union directives for equipment used in potentially explosive atmospheres. This is vital for installations in sectors like oil and gas, chemical processing, or power generation where flammable gases or dust might be present.
- Counter-Clockwise (CCW) Rotation: The kit is engineered for governors whose drive shafts rotate in a counter-clockwise direction. This specific rotational alignment is crucial for correct mechanical integration with the prime mover.
- 4000 RPM Operation: Designed for high-speed applications, this kit is compatible with governors operating up to 4000 RPM, common in many industrial turbines and high-speed engines.
- Speed Droop Control: The TG611-13 governor operates using speed droop control. This feature is fundamental for ensuring stable load sharing when multiple generators operate in parallel, and it plays a critical role in maintaining overall grid stability.
Technical Specifications
| Technical Parameter | Value |
| Brand | Woodward |
| Model Number | 8516-181 |
| Product Type | Mechanical-Hydraulic Governor Conversion Kit |
| Primary Feature | Includes Overspeed Test Device (OTD) |
| Converted Model | TG611-13 (Screw Speed Set) |
| Rated Speed | 4000 RPM |
| Drive Shaft Rotation | Counter-Clockwise (CCW) |
| Compliance/Certifications | ATEX Compliant |
| Rated Speed @ 2% Droop | 3910 RPM |
| Function | Upgrades old governors for improved safety & performance |
| Typical Application | Steam & Gas Turbines, Prime Movers |
Typical Applications
The Woodward 8516-181 conversion kit finds its primary use in:
- Power Generation Plants: For modernizing governors on high-speed steam and gas turbines, ensuring safe and compliant operation.
- Oil & Gas Facilities: Where high-speed prime movers control critical compressors and pumps in potentially hazardous environments.
- Heavy Industrial Processes: To provide precise speed regulation and mitigate overspeed risks for essential machinery in high-performance applications.
Related Products
The 8516-181 kit is part of a series designed to upgrade Woodward TG governors. Other kits in this series, offering variations in speed, rotation, or 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 8516-179: A similar conversion kit for the TG611-13, 4000 RPM, CW, ATEX, with OTD (but a rated speed of 4035 RPM @ 2% Droop).
- WOODWARD 8516-180: A similar kit for the TG611-13, 4000 RPM, CW, ATEX, with OTD (and the same rated speed of 3910 RPM @ 2% Droop as 8516-181). This suggests that 8516-180 and 8516-181 are a pair for CW and CCW rotation at the 3910 RPM droop setting, while 8516-179 is for the 4035 RPM droop setting with CW rotation.
