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Self-positioning tilting-pad bearing structure of marine movable nuclear power turbine

A mobile, steam turbine technology, applied to sliding contact bearings, rotating bearings, bearings, etc., can solve problems such as bearing misalignment, bearing bush wear, etc., and achieve the effect of improving safety, reliability and maintainability

Pending Publication Date: 2019-09-17
中国船舶重工集团公司第七0三研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of existing tilting pad bearing structure due to the lift of the flexible rotor, which easily causes bearing pad wear and bearing misalignment when replacing the bearing, and further provides a self-positioning tilting pad for marine mobile nuclear power steam turbines. Pad bearing structure

Method used

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  • Self-positioning tilting-pad bearing structure of marine movable nuclear power turbine
  • Self-positioning tilting-pad bearing structure of marine movable nuclear power turbine

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Experimental program
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Effect test

specific Embodiment approach 1

[0020] Specific implementation mode one: as figure 1 and figure 2 As shown, the self-positioning tilting pad bearing structure of the marine mobile nuclear power steam turbine in this embodiment mainly includes the upper half of the bearing housing 1, the upper half of the bearing sleeve 2, the bearing body, the upper half of the oil deflector ring 7, and the lower half of the oil deflector ring 9 , the lower half bearing housing 11, the lower half bearing housing 12, a plurality of spherical pads 3 and a plurality of tilting pads 6; the upper half bearing housing 1 and the lower half bearing housing 12 form a bearing housing, and the upper half bearing housing 2 and The lower half bearing sleeve 11 constitutes the bearing sleeve, the upper half oil deflecting ring 7 and the lower half oil deflecting ring 9 constitute the oil deflecting ring, the bearing sleeve is embedded in the bearing box, and the bearing body includes the upper half bearing body 5 and the lower half beari...

specific Embodiment approach 2

[0021] Specific implementation mode two: as figure 1 and figure 2 As shown, the number of tilting pads 6 in this embodiment is four. With this design, when the steam turbine rotor rotates, since the back arc of the tilting pad is different from the curvature of the inner arc of the bearing pad and is in line contact, the tilting pad will swing with the rotation speed of the steam turbine rotor. Due to the characteristics of the flexible rotor As well as the change of the rotor lift caused by the swaying and tilting of the hull, the tilting pad bearing contacts the spherical surface through the pad and the bearing sleeve, which can realize the axial swing of the pad. The thickness of the gasket between the bearing body and the cushion block is used to adjust the center of the steam turbine to return to the state before replacement. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0022] Specific implementation mode three: as figure 1 and figure 2 As shown, the number of spherical pads 3 in this embodiment is four. With such a design, the bearing body can be supported in the bearing sleeve by two spherical pads 3 . Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a bearing structure, in particular to a self-positioning tilting-pad bearing structure of a marine movable nuclear power turbine. The structure solves the problems that in an existing tilting pad bearing structure, due to the fact that a flexible rotor has a lift, abrasion of a bearing bush is easily caused, and the bearing is prone to being misalignment when the bearing is replaced are solved. A bearing body comprises an upper half bearing body and a lower half bearing body, the upper half bearing body and the lower half bearing body are detachably connected, upper half oil baffle rings are arranged on the two sides of the upper half bearing body, lower half oil baffle rings are arranged on the two sides of the lower half bearing body, the bearing body is supported in a bearing sleeve through a plurality of ball-shaped cushion blocks, a plurality of tilting pads are arranged between the turbine rotor and the bearing body in the circumferential direction, the curvature of the outer arc surfaces of the tilting pads are different, the outer arc surfaces of the tilting pads are supported on the inner arc surface of the bearing body through line contact, the tilting pads can freely swing when the turbine rotor rotates, and the two sides of the tilting pads are connected with the oil baffle rings through anti-rotation pins. The self-positioning tilting-pad bearing structure is applied to the marine movable nuclear power turbine.

Description

technical field [0001] The invention relates to a tilting pad bearing structure of a steam turbine, in particular to a self-positioning tilting pad bearing structure of a marine mobile nuclear power steam turbine. Background technique [0002] Offshore floating nuclear power plant (also known as marine nuclear power platform) is an offshore mobile small nuclear power plant, which is an organic combination of small nuclear reactors and ship engineering. It can provide safe and effective energy supply for offshore oil exploitation and remote islands, and can also be used for high-power ships. and seawater desalination. [0003] Steam turbine bearings are usually used to bear the weight of the rotor and additional loads caused by factors such as unbalanced rotor mass, asymmetric partial steam intake, vibration and shock caused by aerodynamic and mechanical reasons, as well as loads caused by hull swaying and tilting change of direction and ensure the radial alignment of the ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/12F16C35/02
CPCF16C17/12F16C35/02
Inventor 姚福锋陈奇王超宋禹林付兴伟丁化文韦俊
Owner 中国船舶重工集团公司第七0三研究所
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