Steam turbine speed monitoring is to determine the actual speed of the steam turbine by measuring the signal output by the speed sensor on the rotor. It can ensure the safe operation of the turbine and timely identify and solve possible faults.

Why Is the Speed Monitoring of Steam Turbine So Important?

The significance of steam turbine speed monitoring is to ensure the safe and efficient operation of the whole unit. Monitoring the speed of the steam turbine can help operators understand the working status and load of the steam turbine, find out the abnormal speed in time, judge the cause of the fault, take effective measures to repair, and avoid accidents and equipment damage caused by too fast or too slow speed. In addition, by monitoring the speed of the steam turbine, the performance and life of the steam turbine can also be evaluated, the operation and maintenance of the steam turbine can be optimized, and the reliability and economy of the steam turbine can be improved. Therefore, turbine speed monitoring is one of the important tasks in power, chemical, petroleum and other industries.

Equipment Used for Steam Turbine Speed Monitoring

The steam turbine speed monitoring device is usually composed of rotational speed sensor and display instrument.

Speed sensor is a sensor that converts mechanical rotation into electrical signal output. Commonly used speed sensors include Hall sensor, magnetoelectric sensor, photoelectric sensor, etc. Their principles are different, but they can convert mechanical rotation into electrical signal output. The speed sensor can be directly installed on the steam turbine and output the signal to the speed monitoring instrument. CS-1 rotational speed sensors are magnetoelectric sensors that normally used for steam turbine speed monitoring.

The rotational speed monitor is used to monitor the output signal of the rotational speed sensor. It can display the real-time speed of steam turbine, and can perform data storage, data analysis and fault diagnosis. Common speed monitoring instruments include digital tachometer, vibration monitor, intelligent tachometer, etc. The speed monitor DF9011 Pro is a commonly used type of speed monitor for steam turbines.

What Is the Function of Steam Turbine Speed Monitor?

The steam turbine speed monitor is mainly used to monitor the change of turbine speed, so as to find and solve faults in time and ensure the normal operation and safety of the turbine.

1. Monitor the change of steam turbine speed in real time, record and analyze data, and provide data visualization display.
2. Automatically diagnose faults of speed sensor and speed calculation device.
3. Help the operator to find out the unbalance of the rotating parts of the steam turbine and make timely adjustment.
4. Linkage with steam turbine control system to realize automatic control and regulation of rotating speed.
5. Send alarm signal when the speed exceeds the set threshold to remind the operator to pay attention and take measures.

By using the turbine rotation speed monitor, the operation efficiency and safety of the turbine can be improved, the maintenance cost can be reduced, and the service life of the turbine can be extended.