8516-039 TG-13 Woodward speed-droop governor for steam turbines

• Brand
  Woodward
• Model
  TG-13
• Product Name
  Mechanical Hydraulic Turbine Speed Governor
• Place of Origin
  United States
• Customs HS Code
  84818090
• Part number
  8516-039
• Dimensions
  220mm × 180mm × 160mm
• Weight
  7.8 kg
• Operating Temperature
  -29℃ ~ +93℃
• Storage Temperature
  -40℃ ~ +100℃
• Warranty
  12 month
• Product Status
  original

Woodward 8516-039 TG-13 Technical Specifications

Product type: Mechanical-hydraulic droop governor for steam turbine control, supporting non-isochronous speed regulation.

Speed range for model 8516-039: 2400–4000 rpm (CCW rotation).

Optional standard speed ranges for TG-13 series: 1100–2400 rpm, 2400–4000 rpm, 4000–6000 rpm.

Output torque: 12.2 ft-lb (16.5 N·m).

Terminal shaft total travel: 40°; recommended travel from no-load to full-load: 27° (2/3 of full stroke).

Internal hydraulic pressure: 1034 kPa (150 psi).

Maximum power consumption of drive shaft: 373 W (1/2 hp).

Speed setting: Standard screw speed adjustment; lever speed setting available as an option.

Shaft type: 0.500-36 serrated shaft, accessible on both sides of the housing.

Hydraulic system: Equipped with built-in oil pump, integrated accumulator relief valve and self-contained oil sump.

Droop characteristic: Internally adjustable, factory pre-calibrated to guarantee stable droop control.

Weight: Approximately 16 lb (7.26 kg).

Housing material: Cast iron or die-cast aluminum as options.

Ambient certification: ATEX compliant, Zone 1 Group II, protection by constructional safety “c”.

Function: Steam turbine speed regulation and load control through terminal shaft linkage mechanism.

Communication interface: Fully mechanical-hydraulic governor without digital communication port.

Software: No configuration software needed; all parameter adjustments are implemented via mechanical tuning.

Application scenarios: Small and medium-sized steam turbines, generator driving units, mechanical drive turbines, grid parallel operation under droop control mode.

Wiring Method for Woodward 8516-039 TG-13

The standard Woodward 8516-039 TG-13 is a fully mechanical-hydraulic governor. Its core speed regulation function requires no mandatory electrical wiring and is mechanically driven by the turbine main shaft.

Mechanical Drive Connection

Connect the governor input drive shaft to the turbine rotating shaft through a flexible coupling. Ensure precise shaft alignment with no mechanical friction, jamming or excessive vibration. This 2400–4000 rpm model adopts CCW rotation direction.

Terminal Shaft Linkage Connection (Mechanical Output)

Connect the governor serrated terminal shaft to the steam turbine control valve lever via mechanical linkage. Configure the full no-load to full-load operating stroke at 27°, within the total 40° mechanical travel of the shaft. Eliminate linkage dead band and mechanical sticking to ensure flexible valve action.

Optional Electrical Accessories Wiring

(Applicable only for units equipped with lever speed adjustment or auxiliary alarm switches)

Auxiliary Limit Switch Wiring (Optional)

Adopt dry-contact discrete signal with a withstand voltage of 250 V AC/DC, applied for valve position limit alarm feedback. For long-distance transmission, use shielded cables to connect switch terminals to DCS/PLC digital input terminals.

Electric Speed Setting Actuator (Optional)

The electric speed setter supports 4–20 mA analog control signal and 110/220 V DC power supply. Wire strictly in accordance with the actuator terminal diagram. Use twisted shielded pair cables for control signals with single-point shielding grounding.

Hydraulic Oil Piping Connection

The governor is designed with a built-in integrated oil sump. For systems with external cooling requirements, connect the governor oil inlet and outlet ports to the external oil cooler. Ensure all pipe joints are completely leak-proof; thoroughly clean internal pipeline impurities before commissioning to prevent hydraulic system contamination and component wear.

Earthing & Grounding

Connect the governor housing to the equipment protective earth to meet ATEX Zone 1 safety standards. Use copper grounding cables with a minimum cross-section of 2.5 mm². Isolate signal and power grounding from high-voltage system grounding to avoid interference.

Wiring & Installation Precautions

The standard TG-13 mechanical governor has no digital communication interface and requires no communication wiring.

Arrange signal cables separately from high-power AC cables to suppress EMC electromagnetic interference.

Complete all linkage installation, coupling connection and wiring work only when the turbine is locked out and depressurized.

For devices fitted with optional electric speed setters or auxiliary switches, follow Woodward Official Manual 04042 for accurate terminal definition and wiring specifications.

FAQ for Woodward 8516-039 TG-13

1. What is Woodward 8516-039 TG-13?

Woodward 8516-039 TG-13 is a self-contained mechanical-hydraulic speed droop governor for steam turbines. It regulates turbine speed by adjusting steam inlet flow, delivering up to 12.2 ft-lb output torque with 40° max terminal shaft travel. It is widely used for small & medium steam turbines driving generators, pumps and compressors, for applications that do not require isochronous constant-speed control.

2. Is Woodward 8516-039 TG-13 still available from the original manufacturer?

TG-13 series including part number 8516-039 is a legacy governor. Woodward has closed new original production for this SKU and set last-time-buy cutoff. We supply new surplus stock and fully overhauled, tested units for turbine retrofit and emergency spare replacement. Contact us for live stock check.

3. What speed range does 8516-039 TG-13 support?

This TG-13 variant covers 2400–4400 rpm, with adjustable speed droop for stable load sharing. The drive shaft rotation direction can be modified on-site to match your turbine mechanical setup. Internal working oil pressure is rated at 150 psi (1034 kPa).

4. What warranty do you provide for Woodward 8516-039 TG-13?

We offer a 12-month warranty starting from shipment date. Warranty covers internal hydraulic and mechanical functional failures under proper installation, correct lubrication and normal operating conditions. Damage caused by wrong oil grade, over-speed, physical impact or improper assembly is excluded.

5. Will you test the TG-13 governor before delivery?

Yes. Every unit will go through hydraulic pressure inspection, speed response test and output shaft travel verification before dispatch. We can provide a test report upon your request for project documentation.

6. Can you confirm compatibility between 8516-039 TG-13 and my existing steam turbine?

Yes. Please provide your turbine model, required speed range, shaft rotation direction and mounting dimension details. Our technical team will verify mechanical fit and performance match before order placement.

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