A Bearing Structure Using Supercritical Carbon Dioxide Lubrication

Abstract

The invention discloses a bearing structure lubricated by supercritical carbon dioxide, which comprises a bushing and a tilting pad, and the tilting pads are multiple and arranged on the inner ring of the bushing; Install a controllable open support static pressure mechanism including a static pressure bag and a pressurized supercritical carbon dioxide channel; The tiles are connected to the static pressure bag, and the other end is connected to an adjustable pressurizing device; there is a lubricating liquid inlet connected to the supercritical carbon dioxide flow channel between the tilting tiles; the middle part of the back of the tilting tiles is installed Swing mechanism of tiles; swing damping blocks with V-shaped rubber damping structure embedded in the tilting tiles are respectively installed at both ends of the back of the tilting tiles; the upper opening of the V-shaped rubber damping structure is embedded in the tilting tiles, its The lower pointed bottom protrudes from the tiltable tiles, touching or close to the tile sleeve. The invention solves the problem of fluttering of tiles under light load and high speed.

Description

technical field [0001] The invention relates to supercritical carbon dioxide power cycle power generation equipment, in particular to a bearing structure lubricated by supercritical carbon dioxide. Background technique [0002] In order to meet the needs of further improving the energy conversion efficiency of power generation equipment, supercritical carbon dioxide power cycle power generation equipment has become a research hotspot in many electric power research units. Bearings lubricated with supercritical carbon dioxide have the same lubricant as the mainstream medium of the power cycle, which avoids the problem of oil and gas cross-contamination in oil bearings. However, due to the low viscosity of supercritical carbon dioxide, the bearing capacity is low, which makes the rotor support problem of supercritical carbon dioxide power cycle power generation equipment prominent. At the same time, supercritical carbon dioxide lubrication causes structural flutter problems i...

AI Technical Summary

Problems solved by technology

However, due to the low viscosity of supercritical carbon dioxide, the bearing capacity is low, which makes the rotor support problem of supercritical carbon dioxide power cycle power generation equipment prominent.

At the same time, supercritical carbon dioxide lubrication leads to structural flutter problems of pads in light-load and viscous media

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