| 摘要 |
FIELD: test equipment.SUBSTANCE: invention can be used in testing and development of gas bearings of high-speed turbine machines. Stand has shaft installed in radial bearing secured on stand base, tested gas-dynamic bearing installed on shaft, arranged in housing, movable relative to bed, drive device connected to shaft, loading device coupled with said housing of tested gas-dynamic bearing, and measurement system with shaft speed transducer and data processing unit. Additionally it is equipped with hot air supply device for heating of gas-dynamic bearing to operating temperature, housing of gas-dynamic bearing is made with two chambers arranged on opposite sides of gas-dynamic bearing, wherein cavities are pneumatically connected to each other by means of latter and are equipped with seals arranged at sides opposite to gas-dynamic bearing, first cavity is configured to receive hot air and is connected to output of hot air supply device, and second one is to release air and is connected with atmosphere, drive device is made in form of high-speed electric motor, and loading device in form of rods attached to housing of tested gas-dynamic bearing and plate connected to ties with calibrated weights, measuring system is equipped with sensors of vertical and horizontal displacements of housing of gas-dynamic bearing, vibration sensor, temperature sensor of gas-dynamic bearing, air temperature sensors arranged in first and second chambers, and device for measurement of friction torque in gas-dynamic bearing in form of horizontal lever fixed on housing of gas-dynamic bearing, and force sensor fixed on stand base and contacting with free end of lever, wherein outputs of sensors are connected to corresponding inputs of data processing unit.EFFECT: higher accuracy of tests results.5 cl, 3 dwg |
