CN2289899Y

CN2289899Y - Turbine machine radial bearing

Info

Publication number: CN2289899Y
Application number: CN 96238486
Authority: CN
Inventors: 雷启新; 高金吉; 翁刚; 范垂毅
Original assignee: LIAOYANG PETROLEUM CHEMICAL FI
Current assignee: LIAOYANG PETROLEUM CHEMICAL FI
Priority date: 1996-09-18
Filing date: 1996-09-18
Publication date: 1998-09-02
Anticipated expiration: 2006-09-18

Abstract

The utility model relates to a radial bearing for a turbine machine. The bearing is composed of a bearing basal body (1) and a changeable thin wall tile (2), the thin wall tile is made of steel backing copper-lead-tin alloy, and the inner surface of the thin wall tile is electroplated with a wear-resisting alloy. Because the thin wall tile (2) has interchangeable ability, the bearing basal body becomes a non-easy wearing part, and can be used for long term. The thin wall tile (2) which is under the action of the high linear velocity and the alternate load has the advantages of impact resistance, great fatigue resistance, etc., and a large number of maintenance time and cost can be saved.

Description

A kind of turbomachinery radial bearing

The utility model relates to a kind of turbomachinery radial bearing, particularly a kind of turbomachinery radial bearing under higher slip line speed and alternate load effect situation.

At present, the employed radial bearing of turbomachinery is divided into bearing metal direct pouring substantially at the integrated bearing on the bearing matrix with the incline watt formula bearing of bearing alloy casting on movable tile fragment, and its bearing metal mostly is tin-base babbit; Because integrated bearing needs whole bearing matrix is changed after bearing metal damages, so waste is bigger; A watt formula bearing bearing matrix does not need frequent replacing though can incline, and tilting pad needs often to change, and cost is higher.In addition, the tin-base babbit that bearing in the past adopts is under higher line speed and alternate load effect, and fatigue resistance is poor, and is fragile, so present turbomachinery radial bearing ubiquity is changed frequently the fragile and more high shortcoming of cost.

The purpose of this utility model provides a kind of turbomachinery radial bearing with new structure and new bearing metal, and this bearing is under higher line speed and alternate load effect, and favorable working performance is used reliably, and maintenance is convenient.

The purpose of this utility model is achieved through the following technical solutions, this bearing is made up of the bearing matrix (1) of subdivision and thin-walled tile (2) two-part of subdivision; thin-walled tile (2) is embedded in the bearing matrix (1) by interference fit, and by retention Hp (3) location, prevents to rotate.Thin-walled tile (2) is to be made by steel backing-copper-lead-tin bimetallic strip, and at thin-walled tile (2) internal surface plating one deck ternary alloy (4), copper, lead, tin alloy composition are copper 68.5-75.5%, plumbous 21-25%, tin 3-4%; The ternary alloy composition is: antimony 4-14%, and copper 3-8%, lead is surplus.

The utility model is for high rate turbine machinery radial bearing, owing to adopted interchangeable thin-walled tile (2) structure, improved the integrated bearing structure on the bearing matrix in the past, make the bearing matrix rise to non-easy worn part by easily damaged parts, prolonged the working life of bearing matrix (1), and lower half portion of bearing matrix (1) fixing after, after thin-walled tile (2) wearing and tearing, only need change a new tile again, and need not mobile bearing matrix (1) lower half portion, guaranteed that like this BEARING SHAFT is constant, kept former installation precision, thereby greatly reduced repair time and expense.Copper-lead tin bearing metal has advantages such as fatigue resistance height, long service life than tin-base babbit, thereby has also saved a large amount of spare part expenses.

The utility model is described in further detail below in conjunction with drawings and Examples.

Accompanying drawing 1 is the structural drawing of this turbomachinery radial bearing.

By accompanying drawing as can be seen, the utility model is to become two-part bearing matrix (1) and dismountable two thin-walled tiles (2) to constitute by horizonally split, on each thin-walled tile (2), a retention Hp (3) is arranged respectively, bearing matrix (1) is added and makes through casting, machine by Ordinary Steel; thin-walled tile (2) is as steel backing by quality carbon steel 08,10 or 15; bimetallic strip of making by powder sintering method with copper, lead, tin alloy processes; the ratio of copper-lead tin is: copper 68.5-75.5%; lead: 21-25%, tin 3-4%; At thin-walled tile (2) plating inner surface one deck antimony, copper, plumbous ternary alloy, its ratio is antimony 4-14%, copper 3-8%, and lead is surplus.Thin-walled tile (2) is positioned on the bearing matrix (1) by retention Hp by interference fit, and purpose is to prevent that thin-walled tile (2) from rotating in bearing matrix (1).

Claims

1, a kind of is the turbomachinery bearing of bearing matrix by Ordinary Steel, it is characterized in that: form by the bearing matrix (1) of subdivision and thin-walled tile (2) two-part of subdivision; thin-walled tile (2) is embedded in the bearing matrix (1) by interference fit, and is located by retention Hp (3).

2, according to the described turbomachinery bearing of claim 1, it is characterized in that: ternary alloy (4) composition of thin-walled tile (2) internal surface plating is antimony 4-14%, copper 3-8%, and lead is surplus.