A high-speed rotary vibrator driven by compressed air

Abstract

The invention relates to the technical field of rotating vibration exciters, in particular to a high-speed rotating vibration exciter driven by compressed air. The high-speed rotating vibration exciter comprises a vibration exciter shell; a vibration exciter rotor and an imbalanced weight tray form an integrated structure; the imbalanced weight tray is provided with an imbalanced weight hole; a turbine nozzle ring is positioned between a compressed air turbine and a compressed air lead-in hole; the left and right sides of the turbine nozzle ring are separately extruded by a left end cover anda backing ring of the vibration exciter; and the backing ring is positioned between the compressed air turbine and a left bearing of the vibration exciter. The high-speed rotating vibration exciter provided by the invention has the characteristics of not depending on a power supply, preventing the use of a transmission device and being simple to machine, convenient to install and wide in application occasions; the machining and assembly difficulties are reduced; the reliability of the rotating vibration exciter is improved; the service life of the rotating vibration exciter is prolonged; the reliability of the rotating vibration exciter is improved; the rotating vibration exciter also adopts structural forms of arrangement of imbalanced weight tray bearings and a compressed air turbine cantilever, so the rotating vibration exciter has the characteristics that the dynamic load of each bearing is relatively uniform, the service life is long and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of rotary vibrator, in particular to a high-speed rotary vibrator driven by compressed air. Background technique [0002] The rotary exciter generates periodic rotational excitation force through the rotation of the exciter rotor, which can simulate the dynamic excitation force generated by the rotor movement of the rotating mechanical equipment during the working process without installing the rotor of the rotating mechanical equipment. In the fields of liquid rocket engines, aeroengines, gas turbines, etc., it is necessary to simulate the rotational excitation force generated by the high-speed rotor operation, and then put forward requirements for the high-frequency excitation capability of the rotational excitation force. The rotary vibrator solves the following problems: the current conventional hydraulic vibrator or electromagnetic vibrator cannot effectively simulate the multi-directional periodic dyna...

AI Technical Summary

Problems solved by technology

The rotary vibrator solves the following problems: the current conventional hydraulic vibrator or electromagnetic vibrator cannot effectively simulate the multi-directional periodic dynamic vibrator generated during the working process of the rotating machinery rotor

Usually, the rotary vibrator drives the rotor of the vibrator to rotate through the motor, which requires the support of auxiliary equipment such as power supply and frequency converter, and cannot be used in the field of rotating machinery equipment or in the field; the mechanical rotary vibrator driven by the motor usually uses a transmission device Such as couplings, etc., making it impossible to work in the high speed range; at the same time, the working speed of the motor is affected by the material, structure and operating temperature, and cannot run to an ultra-high speed (greater than 100,000 rpm), and cannot output higher Rotational excitation force; in the fields of liquid rocket engines, aeroengines, gas turbines, etc., the bearing diameter is usually small (30 mm ~ 200 mm), so that the external installation size of the rotary exciter needs to match the above engine device, the traditional mechanical exciter The vibrator cannot meet the needs in size

Images