Unlock instant, AI-driven research and patent intelligence for your innovation.

Journal bearing pad for turbine

A technology for journals and bearings, which is applied to shafts and bearings, bearings for rotational motion, bearings, etc., and can solve problems such as power loss

Active Publication Date: 2013-12-25
GENERAL ELECTRIC TECH GMBH
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The jetted oil is agitated in the bow space and it is believed that this agitation will cause some power loss in the bearings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Journal bearing pad for turbine
  • Journal bearing pad for turbine
  • Journal bearing pad for turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Aspects and details of examples of the invention are described in more detail in the description that follows.

[0042] exist Figure 1A , a schematic circumferential cross-section of a hydrodynamic journal pad bearing 10 according to an example of the present invention is shown. It consists of an annular cylindrical frame or cage 11 which is ultimately connected to the static parts of a large steam turbine. Inside the cage are platforms 121 , 122 , 123 . Mounted to each of the platforms 121 , 122 , 123 is a corresponding bearing pad 131 , 132 , 133 . The central space of the bearing is occupied by the rotor 12 .

[0043] While sharing most of the constituent components, the individual pads differ from each other to better match loads and forces at their respective locations. Among the features common to all pads is the central hole 14 connecting the circumferential oil distribution groove 141 to a channel 142 within the pad leading to a small chamber at the end of t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a journal bearing pad for a turbine. A hydrodynamic journal pad bearing is provided having several pads circumferentially distributed around the rotor of a large steam turbine with each pad mounted onto a platform separating the pad from a cylindrical cage in turn connected to the floor of a hall housing the turbine and having an interface between at least one of the several pads and the platform on which the at least one of the several pads is mounted is formed such as to include at least two areas with different curvatures to increase the stiffness of the interface in the event of a relative movement between the pad and the platform.

Description

technical field [0001] This invention relates to hydrodynamic bearings, in particular to hydrodynamic bearings for heavy rotors in power plants. Background technique [0002] In hydrodynamic bearings, stationary bearing pads support a rotating object such as a shaft by a pressurized fluid such as oil, air or water. Hydrodynamic bearings take advantage of the fact that, as a rotating object moves, it does not slide along the top of the fluid. The fluid in contact with the rotating object instead adheres tightly to the rotating object, and this movement is accompanied by sliding or shearing between the fluid particles over the entire height of the fluid film. [0003] Thus, if the rotating object and the fluid-contacting layer are moving at a known velocity, the velocity at the mid-level of the fluid thickness decreases at a known rate until the fluid in contact with the stationary bearing pad adheres to the bearing pad and no longer until the move. When the bearing pads ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01D25/24
CPCF16C17/03F16C43/02F16C2360/00F01D25/166F16C32/0666
Inventor A.比甘J.米泽拉
Owner GENERAL ELECTRIC TECH GMBH