Tilting pad thrust bearing of tail gas expansion machine

An exhaust gas expander and thrust bearing technology, applied in the field of thrust bearings, can solve the problems of old-fashioned design that cannot meet long-term stable operation and carbon deposition, and achieve the effects of reducing carbon deposition, avoiding carbon deposition and saving costs.

Pending Publication Date: 2019-09-03
HENGLI PETROCHEM DALIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The actual operation on site proves that the old-fashioned design cannot meet the long-term stable operation, and carbon deposition will occur

Method used

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  • Tilting pad thrust bearing of tail gas expansion machine
  • Tilting pad thrust bearing of tail gas expansion machine
  • Tilting pad thrust bearing of tail gas expansion machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 and figure 2 The basic structure of the old-fashioned bearing shown has a symmetrical center support rib on the back of the pad. Under the action of oil pressure, the pad swings and tilts around the support rib, thereby forming a wedge-shaped gap between the thrust plate and the thrust pad. When the rotor rotates At the same time, the oil is continuously brought into the wedge-shaped gap to form a dynamic pressure oil film with pressure resistance to withstand the axial thrust of the exhaust gas expander and transmit the thrust to the bearing seat.

[0031] Such as image 3 and Figure 4 As shown, the present invention provides a tiltable pad thrust bearing of an exhaust gas expander. The extension direction of the support ribs of the pads is all extended in the radial direction with the geometric center of the thrust bearing as the center point; the support ribs are divided according to the golden section from the middle position The line deviates ...

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Abstract

The invention provides a tilting pad thrust bearing of a tail gas expansion machine. A supporting rib at the symmetry center of the back face of a pad deviates a little, and the deviation direction istowards the final position of rotation the pad relative to a thrust disc. When the bearing works, a bearing oil wedge is formed between the pad face and the surface of a journal by means of the action of the hydrodynamic pressure of lubricating oil film, and the two surfaces are completely separated by the bearing oil wedge. The oil film thicknesses at an inlet and an outlet of the oil wedge arethe main parameters to influence the bearing capacity of the pad. Compared with other thrust bearings, the titling pad thrust bearing has the advantages that after the position of the supporting rib is adjusted, along with change of the work condition of the bearing, the inclination of the pad face and the thickness of the oil film can change, more heat generated by friction can be taken away, sothat the temperature between the bearing pad and the thrust disc is lowered, and the carbon deposition phenomenon of the bearing pad is reduced.

Description

technical field [0001] The invention relates to the technical field of thrust bearings, in particular to a tilting pad thrust bearing of an exhaust gas expander. Background technique [0002] The air compressor is the core dynamic equipment of the PTA device, and the thrust bearing is the key component of the mechanical rotation. Once a problem occurs in the bearing, the air compressor will trip and stop, and the production of the PTA device will be forced to stop, resulting in immeasurable economic losses. In order to realize the long-term stable operation of the core equipment of the entire PTA plant, the air compressor, and reduce the impact on the production of the PTA plant due to equipment problems. [0003] The basic structure of the old-fashioned bearing has a symmetrical central support rib on the back of the pad. Under the action of oil pressure, the pad swings and tilts around the support rib, thereby forming a wedge-shaped gap between the thrust plate and the thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/08F16C33/04F16N1/00
CPCF16C17/08F16C33/04F16N1/00
Inventor 杨小成吕家连
Owner HENGLI PETROCHEM DALIAN
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