CN203308644U

CN203308644U - Thrust bearing bush of water turbine

Info

Publication number: CN203308644U
Application number: CN2013202683225U
Authority: CN
Inventors: 楼昱东
Original assignee: ZHEJIANG ZHENGSHENG BEARING CO Ltd
Current assignee: ZHEJIANG ZHENGSHENG BEARING CO Ltd
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-11-27
Anticipated expiration: 2023-05-15

Abstract

The utility model discloses a thrust bearing bush of a water turbine. The thrust bearing bush of the water turbine comprises a steel bush basic layer, wherein an upper plane of the steel bush basic layer is a slope, a strip-shaped through groove is formed in the middle of the upper plane, the upper plane is divided into a left plane and a right plane through the strip-shaped through groove, metal wire cushion layers are welded to the left plane and the right plane in a brazing mode respectively, and a modified polytef layer is arranged on each metal wire cushion layer in a composite mode. Due to the facts that an elastic metal composite layer which is formed by the metal wire cushion layers and the modified polytef layers is arranged on the steel bush basic layer, and the modified polytef layers are arranged on the metal wire cushion layers in the composite mode, the thrust bearing bush of the water turbine has the advantages of being low in friction coefficient, high in heat stability and free of sticking, having the self-lubrication characteristic, and reducing the frequency of the phenomenon of burnt-out bearing bushes. Due to the fact that elastic metal of the thrust bearing bush of the water turbine has the function of automatic adjustment, the frequency of overhauling of the thrust bearing bush of the water turbine is reduced; meanwhile, due to the fact that the upper plane of the steel bush basic layer is the slope, the lubricating effect is improved; due to the fact that the strip-shaped through groove is formed in the middle of the upper plane, oil can be better stored, and the lubricating effect can be better improved.

Description

A kind of water turbine thrust bearing shoe

Technical field:

The utility model relates to the bearing shell technical field, and what be specifically related to is a kind of water turbine thrust bearing shoe.

Background technique:

Existing hydraulic generator unit bearing, the most of babbit-lined metal of a plurality of working surfaces as the core structure of watt body composition of arc that use, its bearing capacity is little, friction factor is large, and working life is short, the high easily tile kilning of its bearing bush temperature, need to often repair scrape, grinding etc., they are consuming time many, and difficulty is large, increase the labour force.

Simultaneously, on the thrust bearing shoe of existing hydraulic generator unit, plane is generally plane, has very little gap between itself and thrust disc, only has so a small amount of lubricating oil can enter lubricate in this gap, its effect is unsatisfactory, easily causes the tile kilning phenomenon.

The model utility content:

The purpose of this utility model is exactly the deficiency for prior art, and provide a kind of water turbine thrust bearing shoe, it adopts on the steel tile base layer elastic metallic composite bed that on the wire bed course, composite modified polytetrafluoroethylene floor forms is set, has friction factor little, thermostability is high, do not stick and self-lubricating property, it reduces the phenomenon of tile kilning, simultaneously, its elastic metallic has autoregulation, reduce the maintenance number of times of bearing shell, simultaneously, the upper plane of its steel tile base layer is inclined-plane, improve lubrication effect, and upper in-plane forms the better oil storage of bar shaped groove, also better improve lubrication effect.

Technology solution of the present utility model is as follows:

A kind of water turbine thrust bearing shoe, comprise the steel tile base layer, the upper plane of steel tile base layer is inclined-plane, and upper in-plane forms the bar shaped groove makes plane be divided into He You plane, left plane, on He You plane, left plane, equal soldering has the wire bed course, on the wire bed course, is compounded with the modified Teflon layer.

The area that wire bed course on He You plane, described left plane covers all is less than the area on He You plane, left plane.

Described wire bed course is the bronze wire layer.

The beneficial effects of the utility model are:

It adopts on the steel tile base layer elastic metallic composite bed that wire bed course and modified Teflon layer composition are set, has friction factor little, thermostability is high, do not stick and self-lubricating property, reduce the phenomenon of tile kilning, simultaneously, its elastic metallic has autoregulation, reduce the maintenance number of times of bearing shell, simultaneously, the upper plane of its steel tile base layer is inclined-plane, this makes between plane and thrust disc has wedge gap, lubricating oil can better enter, improve lubrication effect, and upper in-plane forms the better oil storage of bar shaped groove, improve lubrication effect, also some fricative chips can be entered in the bar shaped groove, prevent the wearing and tearing of chip to axle, delay the generation of accident.

The accompanying drawing explanation:

Below in conjunction with accompanying drawing, the utility model is described further:

Fig. 1 is the structural representation of steel tile base layer of the present utility model;

Fig. 2 is sectional view of the present utility model;

Fig. 3 is plan view of the present utility model.

In figure: 1, steel tile base layer; 11, upper plane; 12, bar shaped groove; 121, left plane; 122, right plane; 2, wire bed course; 3, modified Teflon layer.

Embodiment:

The following stated is only preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.

Embodiment: see that Fig. 1 is to shown in Figure 2, a kind of water turbine thrust bearing shoe, comprise steel tile base layer 1, the 11Wei inclined-plane, upper plane of steel tile base layer 1, general gradient is 1 ° to 2 °, 11 middle parts, upper plane form bar shaped groove 12 and make plane 11 be divided on 121He You plane, 122，Zuo plane, 121He You plane, left plane 122 all solderings wire bed course 2 to be arranged, on wire bed course 2, be compounded with modified Teflon layer 3.

The area that wire bed course 2 on 121He You plane, described left plane 122 covers all is less than the area on 121He You plane, left plane 122.

Described wire bed course 2 is the bronze wire layer.

Its preparation process is that (it is comprised of 20%～30% polybenzoate, 5%～10% glass fibre and polytetrafluoroethylene powder spreading modified Teflon powder on wire bed course 2, its rigidity and wear resistance are higher than pure teflon, better effects if), carry out compacting sintering and make the composite bed that is embedded with modified Teflon layer 3 on wire bed course 2, wire bed course 2 sides of composite bed are made to this thrust bearing shoe by Welding on the upper plane 11 of steel tile base layer 1.

Wherein, 11 middle parts, upper plane form bar shaped groove 12 makes plane 11 be divided into 121He You plane, left plane 122, and bearing shell can be embedded in bar shaped groove 12 at the chip with axle generation in service like this, prevents the wearing and tearing of chip to axle.

Simultaneously, the area that wire bed course 2 on 121He You plane, described left plane 122 covers all is less than the area on 121He You plane, left plane 122, the polylith bearing shell also can produce groove when forming rear its adjacent bearing shell like this, the chip that had so both facilitated entering also of fluid to produce can be by operation the time embeds wherein, prevent the damage of chip to axle, delay the generation of accident.

Claims

1. water turbine thrust bearing shoe, comprise steel tile base layer (1), it is characterized in that: the upper plane (11) of steel tile base layer (1) is inclined-plane, middle part, upper plane (11) forms bar shaped groove (12) makes plane (11) be divided into left plane (121) and right plane (122), the upper equal soldering in left plane (121) and right plane (122) has wire bed course (2), on wire bed course (2), is compounded with modified Teflon layer (3).

2. a kind of water turbine thrust bearing shoe according to claim 1 is characterized in that: the area that the wire bed course (2) on described left plane (121) and right plane (122) covers all is less than the area of left plane (121) and right plane (122).

3. a kind of water turbine thrust bearing shoe according to claim 1, it is characterized in that: described wire bed course (2) is the bronze wire layer.