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Method for calculating all round properties of bearing of turbo generator in large size

A technology of steam turbine generator and calculation method, applied in the directions of bearings, shafts and bearings, engine components, etc., can solve the problem of lack of radial bearing design and analysis methods, achieve clear and convenient pre- and post-processing, avoid operation errors, and facilitate calculation Effect

Inactive Publication Date: 2006-04-19
SHANGHAI UNIV +1
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  • Description
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Problems solved by technology

Lack of radial bearing design analysis methods suitable for actual engineering design

Method used

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  • Method for calculating all round properties of bearing of turbo generator in large size
  • Method for calculating all round properties of bearing of turbo generator in large size
  • Method for calculating all round properties of bearing of turbo generator in large size

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Experimental program
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Embodiment Construction

[0215] A preferred embodiment of the present invention is as follows:

[0216] 1. Bearing type: lower tile tilting tile-upper tile fixed tile open eccentric circumferential groove hybrid bearing (see Figure 9 )

[0217] Working condition parameters:

[0218] Speed ​​= 3600r / min

[0219] Load = 330000N Lubricating oil: No. 30 turbine oil

[0220] Inlet oil temperature = 40°C

[0221] Oil inlet pressure=.1MPa

[0222] Bearing geometry parameters:

[0223] Tilting tile opening angle=74.89°

[0224] Pivot angle = 37.45°

[0225] Upper tile opening angle = 180°

[0226] Upper tile pre-negative distance = 0mm

[0227] Radius clearance = .5mm

[0228] Bearing diameter = 500mm

[0229] Bearing length = 400mm

[0230] Bottom radius of upper tile circumferential groove = 253mm

[0231] The length of the circumferential groove of the upper tile=280mm

[0232] Circumferential vertical vertical eccentricity of upper tile=4.6mm

[0233] The horizontal eccentricity of the cir...

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Abstract

A method for calculating comprehensive performance of bearing for generator on large ¿C scale turbine includes calling on pretreatment and post ¿C treatment processing module to carry out design pretreatment of bearing for selecting type of bearing and for inputting relevant bearing geometric parameter and single or integrated operation mode parameter , calling on relevant bearing calculation module to calculate parameters of bearing static ¿C dynamic character and bearing stability according to selected type of bearing , returning back to pretreatment and post ¿C treatment module to carry out design post ¿C treatment of bearing.

Description

technical field [0001] The invention relates to a calculation method for bearing performance, in particular to a calculation method for comprehensive performance of a large steam turbine generator bearing. Background technique [0002] The radial sliding bearing is a key component of a large generator set, bearing the weight and radial force of the entire turbine generator rotor and parts on the shaft. When the sliding bearing is working, it is required that the temperature of the oil film should not be too high, the thickness of the oil film should not be too small, and the pressure of the oil film should not be too high. If it is too large, its flow rate is directly related to the oil supply system, and its dynamic characteristics directly affect the stability and critical speed of the entire rotor system. Moreover, with the increase in capacity, size and bearing capacity of turbogenerator sets, higher requirements are put forward for the performance of sliding bearings. ...

Claims

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Application Information

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IPC IPC(8): F01D25/16F16C17/02
Inventor 王小静顾越张直明徐钢峰刘永武姚金传王敏
Owner SHANGHAI UNIV
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