FIELD: fan engineering. SUBSTANCE: method involves rotating a working wheel of axial fan at a constant angular velocity, smoothly increasing rotational frequency of aerodynamic vibroexciter after tuning working wheel blades, to a resonance oscillation frequency, monitoring oscillation amplitude of plates of the aerodynamic vibroexciter on the base of a signal from a strain-gauge mounted on one of the plates, recording rotation angles of the working wheel and aerodynamic exciter relative to the fixture points of rotation angle sensors at the moments of reaching maximum value of a signal AC component and determining the number of resonating blade from the measured angles. EFFECT: enhanced accuracy. 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SYSTEM OF PROGRAMMED TESTS OF CENTRIFUGAL FAN WORKING WHEEL | 0 |
|
SU868393A1 |
| METHOD OF INVESTIGATING AERODYNAMIC CONNECTION OF FLAT GRID BLADE VIBRATIONS IN AERODYNAMIC FLOW | 0 |
|
SU1548679A2 |
| APPARATUS FOR TESTING BLADES OF AXIAL FAN ROTORS | 0 |
|
SU767599A1 |
| ARRANGEMENT FOR MEASURING BOND BY TURBOMACHINE BLADE OSCILLATIONS | 0 |
|
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| METHOD OF INVESTIGATING AERODYNAMIC CONNECTIVITY OF OSCILLATIONS OF FLAT GRID VANES IN AERODYNAMIC FLOW | 0 |
|
SU1359698A2 |
| ARRANGEMENT FOR TESTING VANES OF AXIAL-FLOW FAN IMPELLERS | 0 |
|
SU1451576A2 |
| DEVICE FOR TESTING IMPELLER BLADE OF CENTRIFUGAL FAN | 0 |
|
SU1553765A2 |
| METHOD OF TURBOMACHINERY WHEELS FINISHING | 2014 |
|
RU2579300C1 |
| APPARATUS FOR TESTING CENTRIFUGAL FAN IMPELLER BLADES | 0 |
|
SU979719A1 |
| METHOD OF DETERMINING VIBRATIONS OF TURBINE BLADES | 0 |
|
SU1573368A1 |
