Accurate monitoring of the axial displacement of the steam turbine rotor is one of the key factors to ensure the safe operation of the steam turbine. PR6426/010-010 eddy current sensor, as a high-end device professionally used for monitoring the axial displacement of steam turbine rotors, relies on its unique eddy current technology to build a solid line of defense for the safety protection of steam turbines.

The eddy current effect, this physical principle, forms the core basis of the PR6426/010-010 eddy current sensor. The sensor is equipped with a high-performance coil. When current passes through the coil, a high-frequency alternating magnetic field is generated. When this magnetic field approaches the rotor surface, which is usually a conductive metallic material, eddy currents, so-called eddy currents, are induced on the rotor surface. The generation of this eddy current will form a new magnetic field inside the rotor, which interacts with the original magnetic field to form a dynamic balance. The wonderful thing is that small changes in the distance between the rotor and the sensor probe will break this balance, causing corresponding changes in the magnetic field strength.

It is based on this subtle physical phenomenon that the PR6426/010-010 eddy current sensor can extremely sensitively capture small changes in the axial displacement of the rotor. As the rotor moves back and forth along its axis, the distance between the sensor head and the rotor surface changes, causing the impedance in the induction loop to change. This impedance change is converted and processed by sophisticated electronic circuits and converted into an electrical signal that is easy to process and analyze. The completion of this process not only achieves non-contact measurement and reduces wear, but also ensures high accuracy and stability of the measurement results.

In practical applications, the output signal of the PR6426/010-010 eddy current sensor is directly sent to the control system or monitoring system of the steam turbine. Through pre-programmed algorithms and set safety thresholds, the system can monitor the changing trend of axial displacement in real time. Once the rotor displacement exceeds the preset safety range, the alarm mechanism is immediately triggered and even the emergency shutdown procedure is automatically executed, effectively avoiding the risk of the rotor and the The collision of the stator part thus protects the steam turbine from serious damage and ensures long-term stable operation of the equipment.

The excellent performance of the PR6426/010-010 sensor is not only reflected in the measurement accuracy, but its high temperature resistance, vibration resistance, and anti-interference capabilities also guarantee its stable operation under extreme working conditions. Especially during the transition of dynamic operating conditions such as turbine startup, loading, and shutdown, the axial displacement changes particularly dramatically. At this time, the sensor’s rapid response capability and accurate monitoring are particularly important, providing operators with valuable decision-making basis. This ensures the safety and controllability of the entire process.

The PR6426/010-010 eddy current sensor not only improves the safety and efficiency of steam turbine operation, but also promotes the transformation of maintenance strategies from passive response to active prevention, providing a more accurate and reliable displacement monitoring solution for the power industry.

Yoyik can offer many spare parts for power plants as below:
Speed sensor SYSE08-01-060-03-01-01-02 1S001 5482
Explosion-proof Limit Switch Box Topworx DXP-T21GNEB
Limit switch ZHS40-4-N-03
linear position feedback 2000TDGN
Transmitter 2088G1S22B2B2M4Q4
INTELLIGENT REVERSE ROTATING SPEED MONITORING DEVICE JM-C-337
Heater Element D-59mm,L-450mm
Timer JORC
indicator RC860MZ091ZSS
Turbin Expansion Sensor TD-2 0-50mm
Sensor Temperature Sparepart WSSX-411
MCB 1P IC65N D 16A
LIMIT SWITCH C62ED
Proximitor 330780-90
Differential expansion Sensor of turbine ES-25-M30x2-B-00-05-10
PRESSURE SENSOR R412010767
precision pressure transducer 604G11
BRAUN MONITOR MODULE E1610
Plug-in infrared sensor HSDS-40/T