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Automatic centering ball sealing mechanism restraining fluid exciting force

A technology of self-aligning and sealing mechanism, used in mechanical equipment, rolling contact bearings, shafts and bearings, etc., can solve the problem of fluid excitation, which cannot be fundamentally solved, the width of the instability zone increases, and the stability of the rotor periodic solution. Variation and other problems, to achieve the effect of improving the anti-fluid excitation capability and reducing the fluid excitation force

Inactive Publication Date: 2017-05-24
JIANGSU FRONTIER ELECTRIC TECH +2
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Problems solved by technology

[0007] (3) The increase of the rotor tilt angle will make the stability of the rotor period solution worse, and the width of the instability zone will increase
[0008] Moreover, due to the existence of the above problems, the problem of fluid excitation cannot be fundamentally solved

Method used

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] Unless the context clearly states otherwise, the number of elements and components in the present invention can exist in a single form or in multiple forms, and the present invention is not limited thereto. Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It can be understood that the term "and / or" used herein refers to and covers any and all possible combina...

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Abstract

The invention provides an automatic centering ball sealing mechanism restraining fluid exciting force. The automatic centering ball sealing mechanism restraining fluid exciting force comprises an outer shell with the inner surface provided with a spherical raceway, a sealing block with the outer surface provided with at least one raceway and a rotor in sealing connection with the sealing block. At least one row of balls are further arranged between each raceway of the sealing block and the spherical raceway of the outer shell. Each raceway corresponds to one row of balls. Each ball makes point contact with the spherical raceway of the outer shell. Each ball makes arc face contact with the corresponding raceway of the sealing block. The sealing block surrounds and is sealed to the outer surface of the rotor and deflects along with the rotor. The automatic centering ball sealing mechanism has the beneficial effects that by means of the automatic centering ball sealing mechanism restraining fluid exciting force, the fluid exciting force caused by rotor inclination or deflection deformation can be reduced, and accordingly the fluid exciting resisting capability of the automatic centering ball sealing mechanism can be improved.

Description

technical field [0001] The invention relates to an automatic self-aligning ball sealing mechanism for suppressing fluid exciting force. Background technique [0002] Seals in turbomachinery play an important role in suppressing fluid leakage and improving unit economy. However, while the rotary mechanical seal suppresses fluid leakage, it also generates an exciting force, which affects the stability of the rotor. For this reason, on the basis of the traditional sparse-tooth seal, by changing the structure of the seal itself, new types of seals such as honeycomb, brush, reverse swirl, damping, spiral groove, ladder, and mixing have been proposed, and certain effects have been achieved. [0003] The above-mentioned seals can be collectively regarded as fixed seals, that is, changes in external working conditions will not cause adaptive changes in the sealing structure. In the 1990s, the United States proposed the concept of adjustable seals. The main idea is to introduce an ...

Claims

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Application Information

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IPC IPC(8): F16C23/08F16C33/76
CPCF16C23/08F16C33/76
Inventor 姚永灵卢修连卢承斌马运翔丁建良高远
Owner JIANGSU FRONTIER ELECTRIC TECH
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