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Help CenterWoodward 9904-113 Mechanical Hydraulic Speed Reducer
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I. Core Positioning and Replacement Compatibility
Product Positioning: Mechanical-hydraulic speed reduction governor of the TGE13 series, adapted for 2400 rpm turbomachinery and applied in asynchronous operation scenarios. It provides stable speed regulation and load adaptability, meeting the basic safety and regulation requirements for industrial turbine control.Replacement Compatibility: Direct replacement for the old TG13 (2400 rpm) model, with fully compatible mounting holes, drive shaft and output shaft interfaces. Direct replacement and upgrade are achievable without additional adjustment to the mounting structure.Key Identification: 9904-113 TGE13 (2400 RPM), 12 Screw, CW, OTD-free, suitable for asynchronous operation conditions.
II. Working Principle and Structure
Speed Regulation Mechanism: The drive shaft senses the rotor speed and compares it with the internal set value. It controls the speed control valve via the rotating output shaft to adjust the steam/fluid flow for stable speed maintenance.Structural Design: Equipped with a stainless steel screw-type actuator and a die-cast aluminum housing, it integrates a ball joint assembly driven by the drive shaft for speed measurement and an oil pump for output force supply. Featuring corrosion and vibration resistance, it is adaptable to harsh industrial environments.Operation Logic: Adopting the speed reduction regulation mode without a synchronization (constant speed) function, it is suitable for variable load working conditions. Closed-loop control is realized through mechanical-hydraulic feedback to ensure stable speed.
III. Technical Parameters
| Parameter Item | Value | Remarks |
|---|---|---|
| Rated Speed | 2400 rpm | Optimized operating point |
| Maximum Speed | 2640 rpm | Instantaneous upper limit (1.1 times the rated speed) |
| Minimum Speed | 2160 rpm | Stable operating lower limit (0.9 times the rated speed) |
| Idle Speed | 2300 rpm | No-load idle setting |
| Output Rotation Direction | CW | Fixed rotation direction |
| Structural Type | 12 Screw | Stainless steel screw-type |
| Overspeed Protection | None | OTD function not supported |
| Compatible Model | Old TG13 (2400 rpm) | Direct replacement with compatible interfaces |
| Operating Temperature | -40°C to +85°C | Adaptable to harsh industrial environments |
| Protection Grade | IP54 | Dust and water proof, suitable for industrial sites |
IV. Installation and Maintenance
Installation Compatibility: Fully compatible with the old TG13 (2400 rpm) model, with identical mounting holes, drive shaft and output shaft interfaces. Direct replacement is available without modifying the mounting base and connecting components.Lubrication Requirements: Use special lubricating grease; regularly inspect the lubrication status of the screw mechanism and bearings to prevent jamming, ensuring regulation response speed and mechanical service life.Maintenance Cycle: It is recommended to conduct action calibration and leakage inspection every 6 months to ensure regulation accuracy and response speed, and timely identify and troubleshoot hydraulic system leakage and mechanical jamming issues.Environmental Adaptability: The operating temperature ranges from -40°C to +85°C with an IP54 protection grade. Designed with vibration and impact resistance, it is suitable for Zone 2 hazardous areas and complies with industrial environment application standards.
V. Application Scenarios
Suitable for 2400 rpm turbine-driven equipment without the need for synchronous operation, including:
Pumps, compressors/turboexpanders
Pressure and inlet draft fans
Off-grid generators, industrial steam turbines, etc.
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