RADIAL PLAIN BEARING WITH CONTROLLED LINERS ON HYDROSTATIC SUSPENSION

The radial plain bearing with controlled liners on a hydrostatic suspension addresses reliability issues by using an eddy current sensor and piezo actuators for closed-loop control, ensuring stable operation under variable conditions through precise adjustment and compensation for thermal deformations.

RU244545U1Active Publication Date: 2026-07-01ООО СПЕЦДЕТАЛЬ
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Patent Information

Application Number
RU2026107444U
Authority / Receiving Office
RU · RU
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2026-03-19
Publication Date
2026-07-01
Estimated Expiration
2036-03-19

AI Technical Summary

Technical Problem

Existing radial plain bearings in highly loaded rotary machines, such as gas and steam turbines, compressors, and pumps, face reliability issues due to passive lubrication systems that fail to adapt to rapidly changing operating conditions, leading to deviations in operating clearance, increased vibration, and potential failure under variable loads and temperature changes.

Method used

A radial plain bearing with controlled liners on a hydrostatic suspension, utilizing an eddy current linear displacement sensor and piezo actuators for closed-loop control, combined with a temperature-compensating element, to monitor and adjust the position of the liners in response to changes in temperature, lubricant viscosity, and shaft loads, ensuring optimal hydrodynamic lubrication.

Benefits of technology

The solution enhances the reliability of the bearing by maintaining stable operating conditions and compensating for thermal deformations, reducing vibrations, and extending the operational life by providing precise feedback and active adjustment of the bearing position.

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Abstract

This utility model relates to mechanical engineering, specifically to radial segment plain bearings with active liners position control, and can be used in the design of highly loaded rotary machines, such as gas and steam turbines, compressors, and pumps. The technical result of this utility model is to improve the reliability of plain bearings under variable operating conditions by providing feedback on liners position and compensating for thermal deformations in the power control circuit.The technical result is achieved due to the fact that an eddy current linear displacement sensor is built into the housing radially opposite the rear surface of at least one insert by means of a threaded connection, configured to monitor the radial position of this insert relative to the housing, between the housing and each stop a temperature-compensating element is installed in the form of a washer made of a material with a given coefficient of linear thermal expansion, clamped when screwing the corresponding stop into the housing with the possibility of axial thermal expansion, and a control unit located outside the housing, electrically connected by conductors to the sensor and piezo actuators, wherein the output of the sensor is connected to the input of the control unit, and the output of the control unit is connected to the piezo actuators for generating control signals based on the feedback signal.
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Citation Information

Patent Citations

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    EP2345819B1

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    RU134602U1

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