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I. Core Positioning and Replacement Compatibility
Product Positioning: 12-screw mechanical-hydraulic speed reduction governor of the TG13 series, specially designed for 4000 rpm turbomachinery. It is applied in asynchronous operation scenarios and provides stable speed regulation and load adaptability.Replacement Model: Direct replacement for TG13 (F8516-039), with fully compatible mounting holes, drive shaft and output shaft interfaces, and compliant with ATEX explosion-proof standards.Key Identification: 9904-820 TG13 (4000 RPM) ATEX COMPLIANT, 12 Screw, OTSD-free, CW output rotation direction.
II. Working Principle and Structure
Speed Regulation Mechanism: The drive shaft senses the rotor speed, compares it with the internal set value, and controls the speed control valve via the rotating output shaft to adjust steam/fluid flow for stable speed maintenance.Structural Design: Equipped with a stainless steel screw-type actuator and a die-cast aluminum housing, featuring corrosion resistance, vibration resistance and long service life, suitable for harsh industrial environments.Operation Logic: Adopts speed reduction regulation mode without synchronization (constant speed) function, adapted to variable load working conditions, and realizes closed-loop control through mechanical-hydraulic feedback.
III. Technical Parameters
| Parameter Item | Value | Remarks |
|---|---|---|
| Rated Speed | 4000 rpm | Optimized operating point |
| Maximum Speed | 4400 rpm | Instantaneous upper limit |
| Minimum Speed | 3600 rpm | Stable operating lower limit |
| Idle Speed | 3910 rpm | No-load idle setting |
| Overspeed Setting | 2400 rpm | Speed reduction regulation threshold |
| Output Rotation Direction | CW | Fixed rotation direction |
| Structural Type | 12 Screw | Stainless steel screw-type |
| Explosion-Proof Certification | ATEX Compliant | Meets EU explosion-proof standards |
| Overspeed Test Device (OTSD) | None | OTSD function not supported |
| Compatible Model | F8516-039 | Direct replacement with compatible interfaces |
IV. Installation and Maintenance
Installation Compatibility: Fully compatible with F8516-039, with identical mounting holes, drive shaft and output shaft interfaces for direct replacement.Lubrication Requirements: Use special lubricating grease; regularly inspect the lubrication status of the screw mechanism and bearings to prevent jamming.Maintenance Cycle: It is recommended to conduct action calibration and leakage inspection every 6 months to ensure regulation accuracy and response speed.Environmental Adaptability: Operating temperature ranges from -40°C to +85°C, IP54 protection grade, with vibration and impact resistant design, suitable for industrial sites.
V. Application Scenarios
Suitable for 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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