WOODWARD TG611 speed controller

WOODWARD TG611 speed controller

Product positioning and functionality

Core function: Real time monitoring of turbine speed and adjustment of inputs (such as steam and fuel) through mechanical or electro-hydraulic mechanisms to maintain equipment operation within the set speed range, prevent overspeed or speed fluctuations, and ensure system stability.

Application scenarios: Suitable for power equipment such as steam turbines and gas turbines, commonly used in industrial fields such as power generation, petrochemicals, and mechanical drives.

Model and core parameters

1. Basic model and specifications

TG611-13 series (screw type):

Speed range: 2400 rpm, 4000 rpm, 6000 rpm, supporting clockwise (CW) or counterclockwise (CCW) rotation.

Droop characteristic: Typical value of 2%, such as 1950 rpm or 2010 rpm (depending on the model) at rated speed @ 2 ° Droop.

Example of Part Number:

TG611-13, Screw, 2400 rpm, CCW, ATEX, w/OTD (with overspeed trip device): 8516-178.

TG611-13, Screw, 4000 rpm, CW, ATEX, w/ OTD：8516-180。

TG611-17 series (leverage type):

Performance characteristics: Suitable for higher torque requirements, higher adjustment accuracy, part numbers such as TG611-17, Screw, 2400 rpm, CW, ATEX, w/OTD: 8516-186.

2. Key parameters

Overspeed Protection (OTD): Some models integrate overspeed trip devices, which automatically trigger shutdown when the speed exceeds a threshold, enhancing system safety (such as part numbers 8516-175 to 8516-191 all have OTD).

Certification and Environment: Supports ATEX certification, suitable for Zone 2 hazardous areas, resistant to vibration and high temperature.

Structure and Working Principle

Mechanical structure: Using screws or levers to drive, sensing changes in rotational speed through centrifugal force, and driving hydraulic actuators to adjust valve opening.

Closed loop control: The speed sensor (such as a magnetic pickup) provides real-time feedback signals, and the speed controller outputs adjustment signals based on deviations, forming a "monitoring adjustment feedback" loop.

Accessories and System Integration

Conversion kit:

TG to TG611 conversion kit (part number: 8516-174), used for upgrading and replacing old models of TG speed controllers to reduce renovation costs.

Actuator matching:

It can be paired with Woodward TGE turbine actuators (such as TGE13, TGE17) or VariStroke actuators to achieve "governor actuator" coordinated control.

Monitoring and Communication:

Connect to industrial networks through the MicroNet system or Flex500 platform, and support remote configuration of parameters (such as speed set points and sag coefficients) using GAP software.

Spare parts and maintenance:

Seals, springs, drive shafts and other spare parts (refer to the spare parts list in the product catalog) to ensure long-term operational reliability.

Advantages and Characteristics

High precision adjustment: The droop characteristic can be adjusted to meet the load distribution requirements of single machine operation or multi machine parallel connection.

Security protection: Integrated OTD overspeed trip device to reduce the risk of equipment damage caused by overspeed.

Strong compatibility: Compatible with other Woodward products such as ProTech overspeed protection devices and UG series speed controllers, making it easy to build a complete control system.

Environmental adaptability: ATEX certification supports applications in hazardous areas, with durable mechanical structures suitable for harsh industrial conditions.

Application scenarios

Power generation field: Stable speed control of steam turbine generator units to ensure constant grid frequency.

Petrochemical industry: Speed regulation of gas turbine driven compressors, pumps and other equipment to adapt to changes in process loads.

Mechanical drive: drives industrial machinery such as fans and rolling mills to maintain speed to ensure production efficiency.