DEVICE FOR MEASUREMENT OF SPIN ANGLE OF SHAFT TRANSMITTING TORQUE Russian patent published in 2015 - IPC G01L3/10 

FIELD: power industry.

SUBSTANCE: invention can be used at thermal power plants (TPP) on energy equipment having open sections of a shaft train and intended for measurement of a spin angle of the shaft train with a possibility of conversion of this angle to power units transmitted with this shaft train. A measurement device of a shaft spin value includes inductor coils on a shaft, sensors on a stator part, which generate an electric pulse signal at passage of the inductor coil under the sensor during shaft rotation, and controller fixing the reception time of each pulse in the form of signals from sensors. Inductor coils are installed in end sections of the shaft and two of them are located diametrically opposite in a plane passing through the shaft rotation axis. Induction sensors are located in a stator part opposite each inductor coil. An additional inductor coil is installed in front of one of the inductor coils in the end section of the shaft to obtain a synchronisation mark at the shaft rotation. Shaft spin angle value φ is determined as per the corresponding ratio.

EFFECT: improving measurement accuracy of a shaft spin value.

2 dwg