A standard rotor for calibration of high-speed rotor dynamic characteristic test bench
A high-speed rotor and test bench technology, applied in static/dynamic balance testing, mechanical component testing, machine/structural component testing, etc., to achieve the effects of verifying accuracy, verifying alignment accuracy, and improving reliability
Active Publication Date: 2016-08-24
BEIJING AEROSPACE PROPULSION INST
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- Application Information
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Problems solved by technology
Since the design of the standard rotor needs to consider the structural form, support and docking method of the test bench, there are few domestic reports on the design and manufacture of this type of standard rotor
Method used
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Embodiment Construction
[0017] A standard rotor for calibration of a high-speed rotor dynamic characteristic test bench according to the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] Such as figure 1 As shown, a standard rotor for calibration of a high-speed rotor dynamic characteristic test bench according to the present invention includes a rotating shaft 1, a lock nut 2, an adjustment pad 3, a bolt 4, a flange coupling 5, a tightening bolt 6, a washer 7, Squirrel cage 8, rolling bearing 9, metal rubber damper 10, central bolt 11 and other components.
[0019] The standard rotor includes a rotating shaft 1 in the form of an optical shaft, and the support of the rotating shaft 1 adopts a squirrel cage support structure, that is, the upper part and the lower part of the rotating shaft 1 are respectively connected to a squirrel cage 8 through a lock nut 2; An oil-lubricated rolling bearing 9 is provided at the contac...
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The invention provides a standard rotor used for calibrating a high-speed rotor dynamic characteristic test bed. A rotation shaft of the standard rotor is supported by a mouse cage supporting structure, namely, the upper part of the rotation shaft and the lower part of the rotation shaft are respectively connected with a mouse cage through a locking nut, and an oil-lubrication rolling bearing is arranged at the contact position of the inner side of each mouse cage and the rotation shaft. The bottom end of the rotation shaft is connected with a flange coupling, and the rotation shaft is connected with the test bed through the flange coupling. The flange coupling is connected with the rotation shaft in the mode that a cylindrical face is combined with a conical face and center bolts are used for fastening, namely, the flange coupling are fixed with the bottom end face of the rotation shaft through center bolts inside the flange coupling. Multi-plane weight balancing holes are formed in a shaft body of the rotation shaft and the top end of the rotation shaft so as to perform multi-plane weight balancing in the high-speed state. The weight balancing holes formed in the same plane are distributed symmetrically. The standard rotor plays a role in checking the centering state and the connecting state of the test bed, improves the reliability of the test bed and verifies the accuracy of a test system.
Description
technical field [0001] The invention relates to the field of research on the dynamic characteristics of a high-speed rotor of a rocket engine, in particular to a standard rotor for calibrating a high-speed rotor dynamic characteristic test bench. Background technique [0002] The turbopump rotor is the main component of the liquid rocket engine. With the rapid development of the aerospace industry, the performance of the engine continues to improve, and the working speed of the turbopump rotor continues to increase, usually exceeding the first-order or even second-order critical speed. The dynamic characteristics of the high-speed rotor are obvious, and it is very sensitive to the vibration caused by the unbalance. Data show that one of the main exciting forces of the engine is the unbalanced force of the turbo pump rotor. Therefore, the experimental research on the high-speed dynamic characteristics of the rotor is an important link to ensure the balance accuracy of the ro...
Claims
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IPC IPC(8): G01M1/02G01M1/16G01M13/00
Inventor 窦唯尹健昭毛乐园谭晋云闫宇龙杨永久
Owner BEIJING AEROSPACE PROPULSION INST