Description

Woodward  9907-167  Steam turbine Digital Governor

Working principle: By collecting the speed signal of the steam turbine, and based on the preset control logic and parameters, it automatically adjusts the intake, exhaust and other parameters of the steam turbine, thereby achieving stable operation of the steam turbine and precise control of the output power.

Performance characteristics:
High control accuracy: Advanced PID control algorithm is adopted, and the speed control accuracy can reach ±0.25%, which can meet the demands of various complex working conditions.
Strong anti-interference ability: It has a high immunity to electrical interference on the power supply and can maintain stable performance in complex electromagnetic environments.
Good environmental adaptability: With a robust and durable design, it operates within a temperature range of -40 °C to + 85°C, and has a shock, dust and water resistance rating of up to IP67, enabling it to function normally under various extreme conditions.
User-friendly interface: It offers an intuitive user interface, allowing users to easily view and set parameters through the LCD display on the front panel.
Convenient communication: Supports multiple communication interfaces, such as RS-485, etc., facilitating integration with other systems. It also supports Modbus communication and can be easily connected to PLC or factory DCS.
Strong power supply adaptability: In addition to the standard 24V power supply, other output voltage options are also provided to adapt to different working conditions.

Usage method:
Installation and connection: Install the governor onto the control cabinet or operation platform near the steam turbine, and connect the sensors and actuators as per the instructions to ensure correct signal transmission and action execution.
Power supply communication: Provide the required power for the governor, connect it to the upper computer or monitoring system using the appropriate communication interface, and correctly configure the communication interface and parameters.
Parameter Settings: According to the steam turbine model, operation requirements and control system requirements, set the control parameters of the governor, such as target speed, start-stop speed, acceleration and deceleration, etc.
Program writing: Use supported programming languages (such as C++, C#, etc.) to write control programs to achieve the control and operation of the governor.
Download and debug: Download the written control program to the governor for debugging and testing to ensure that the governor operates normally according to the preset logic and parameters.
Operation and maintenance: Start the steam turbine and control system, and operate the governor. During operation, closely monitor its status and parameter changes, adjust and control the turbine speed and output power in a timely manner, and carry out regular maintenance and servicing.

Application fields: Widely used in cogeneration systems to control the rotational speed and output power of steam turbines to meet the demands of power generation and heating. It can also be used as a core control component of steam turbines in power plants to ensure the stable operation and efficient power generation of the generator sets. It is also applicable to industrial fields such as chemical engineering, metallurgy and papermaking, and is used to control the rotational speed and output power of various rotating machinery. In addition, in the ship’s power system, it can be used to control the rotational speed and output power of the main engine of the ship, ensuring the safety and performance of the ship’s navigation.