Damping site

 

(57) Abstract:

The invention relates to mechanical engineering and can be used in rapidly rotating the rotors. The technical result increased reliability of damping. The inventive defirous node of the damping cylinder is made of stepped form. The lower part of the damping cylinder has a larger diameter and freely installed in the cavity with a damping fluid, and in the upper part of smaller diameter mounted adjustment ring covering a gap axis of the flexible support. At the lower end of the damping cylinder can be executed plot conical shape. The bottom of the cavity can be performed with a plot of conical shape. 2 C. p. F.-ly, 2 Il.

The invention relates to mechanical engineering and can be used in the rotors of machines and devices, such as gas centrifuges.

Known damper gas centrifuges [1] performed a movable element in the form of a cone-shaped damping element with a bearing for the elastic support of the rotor located in the upper part of the damping element. The damping element is mounted on the hinge, located at the bottom of the element in an oil bath and maintained in Weert is

Closest to the invention, the technical solution is damping the node vectors of the vertical rotor [2] made in the form of primary and secondary cylindrical damping elements elastically installed in the tank with a damping liquid, mounted on the primary element bearing for elastic support of the rotor. For additional cylindrical damping element is fixed spans with a certain gap elastic bearing adjustment ring which interacts with the axle at high amplitudes of oscillation of the rotor, campfire its motion during strong disturbances.

As you know, the damper vectors in provedeniya poles of the rotor should provide suppression of low-frequency vibrations of the rotor when passing the starting frequency and low-frequency and high-frequency nutation oscillations of the rotor in the rotation speed. Suppressing such vibrations of the rotor is provided with a simple design of the main damper [1] which is included in the work constantly. However, this design does not provide sufficient reliability of the rotor at high amplitude of its oscillations. In the design of damping node [2] provides additional the oscillations of the rotor. However, this construction is rather complicated and does not provide sufficient reliability of the rotor when strong interactions.

The technical result of the invention to create a simple design of the damper, ensuring reliable and efficient damping of vibrations of the rotor at high amplitude of its oscillations and strong interactions.

For this damping unit, which includes a main damper containing a movable element with a bearing for a flexible rotor supports and centering springs in the upper part, pivotally supported in the tank filled with damping fluid, and additional damper containing a damping cylinder with adjustment ring, the damping cylinder is made of stepped form, the bottom of which has a larger diameter and freely installed in the cavity with a damping fluid, and in the upper part of smaller diameter mounted adjustment ring covering a gap axis of the flexible support.

At the lower end of the damping cylinder can be executed plot conical shape.

The bottom of the cavity can be performed with a plot of conical shape.

In Fig.1 schematically shows a vertical time is p 1 with radius 2, in which the elastic support in the form of needles 3, based on the thrust bearing 4 bearing support mounted in the upper part of the rolling element 5 of the main damper, lower part of which is installed on the hinge 6 in the tank 7 with the damping fluid in the housing 8. The movable element is held in the vertical position of the centering springs 9. In the cavity 10 with damping fluid installed in the lower part 11 of larger diameter of the damping cylinder of stepped form an additional damper. In the upper part 12 of smaller diameter fixed adjustment ring 13, covering with a clearance of the axle 2. At the lower end of the damping cylinder is made section 14 of conical shape.

In the embodiment, the damping of the site (Fig.2) the bottom of the cavity made by section 15 of the conical surface.

The damping Assembly operates as follows.

When casting the rotor 1 during the rotation of its low-frequency vibrations, such as vibrations during acceleration from unbalance of the rotor, and the low-frequency and high-frequency fluctuations in the rotation speed at which the vibration amplitude is not very large, and the gap between the adjustment ring and the axle is not selected, transmit is Tate which the movable element moves in the tank 7, swinging on the hinge 6. When such movements of the rolling element arise elastic restorative force upon deformation of the centering springs and the damping force when the displacement of the damping fluid mainly in the gap between the damping cylinder and the housing 8. With strong impacts on the spinning rotor 1, in which the amplitude is greater than the magnitude of the gap between the shaft 2 and the ring 13, the axle 2 is in engagement with the ring 13 and rejects top 12 and the bottom 11 of part of the damping cylinder. Move the lower part 11 of the damping cylinder in the cavity 10 creates an additional damping force acting on the rotor 1 through the upper part 12 additional damper and an adjustment ring 13 and reducing the amplitude of vibrations of the rotor. When reducing the vibration amplitude of the rotor 1 axis 2 out of engagement with the ring 13, and the additional damping element is centered in the housing 8 under the action of gravity with section 14 of conical shape at the lower end of the cylinder or in the embodiment of the device (Fig.2) using section 15 of conical shape at the bottom of the cavity 10.

Perform additional damping cylinder in the form of freely set the Fera, and the stepped form of the damping element provides the minimum value given to axis 2 mass system that ensures the highest efficiency of damping while reducing interaction forces between the axle 2 and the ring 13, reducing their mutual wear at work, and increases the reliability of the design.

1. DAMPING the SITE, which includes a main damper containing a movable element with a bearing for a flexible rotor supports and centering springs in the upper part, pivotally supported in the tank filled with damping fluid, and additional damper containing a damping cylinder with adjustment ring, wherein the damping cylinder is made of stepped form, the bottom of which has a larger diameter and freely installed in the cavity with a damping fluid, and in the upper part of smaller diameter mounted adjustment ring covering a gap axis of the flexible support.

2. Site under item 1, characterized in that at the lower end of the damping cylinder is made conical section of the form.

3. Site on PP.1 and 2, characterized in that the bottom of the cavity is made with a section of conical shape.

 

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