STAND FOR MEASURING ENERGY INDICATORS OF POWER PLANT Russian patent published in 2018 - IPC G01L3/04 G01L5/26 G01P3/44 G01M15/14 

FIELD: measuring equipment.

SUBSTANCE: invention relates to a measuring technique and can be used to determine the axial force, angular velocity, torque in experimental studies of turbines and other power plants. Stand includes housing 1 in which rotating shaft 2 is installed, supported on radial 3 and angular contact 4 bearings. Angular contact bearing 4 is fixed in housing 1 by means of inner 5 and outer 6 locking rings, that allow to regulate the axial movement of shaft 2 in bearings 3 and 4. Shaft 2 perceives the axial force and torque generated by the working elements of the turbine or other power plant. Movable coupling 7 is mounted on shaft 2, which connects shaft 2 of the power plant with intermediate shaft 8. Coupling 7 is rigidly connected to shaft 2 and due to the splined connection provides axial movement of shaft 2 relative to both intermediate shaft 8 and housing 1. Stand is equipped with a device for measuring axial force, including axial force measurement sensor 9, axial plate 10 with power drive 11 connected to movable coupling 7 via axial bearing 12 mounted in an axial plate. Displacement sensor 22 is installed on shaft 2 of the turbine. Device for measuring the axial force has a translational degree of freedom and affects coupling 7 through thrust bearing 12. Force measurement sensor 9 generates an electrical output signal. Electrical signal of sensor 9 is registered by measuring information processing unit 13. Intermediate shaft 8 is connected to measuring shaft 15 by means of clutches 14. Disks measuring the frequency of rotation 16 and 17 of shaft 2 is fixed on the measuring shaft 15 fixed at a distance L one from another. Disks 16 and 17 are provided with magnetic or optical marks that allow using recording sensors 18 and 19 of disks 16 and 17 speed to record their angular rotation speed and determine the phase shift of the frequency of rotation of disk 16 with respect to disk 17 using unit for registration and processing of measuring information 13. Measuring shaft 15 is connected to load device 20 through clutches 14. Displacement sensor 22 is installed on shaft 2 of the turbine. Displacement sensor 22, axial force measurement sensor 9 and rotational speed recording sensors 18, 19 are connected to measuring information registration and processing unit 13.

EFFECT: technical result consists in expanding the functional capabilities of the stand by simultaneously measuring axial force, angular velocity and torque of a turbine power plant with high accuracy.

4 cl, 1 dwg