CN202468703U - Tilting pad bearing provided with spring at back of upper pad - Google Patents
Tilting pad bearing provided with spring at back of upper pad Download PDFInfo
- Publication number
- CN202468703U CN202468703U CN2012201171390U CN201220117139U CN202468703U CN 202468703 U CN202468703 U CN 202468703U CN 2012201171390 U CN2012201171390 U CN 2012201171390U CN 201220117139 U CN201220117139 U CN 201220117139U CN 202468703 U CN202468703 U CN 202468703U
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- Prior art keywords
- bearing
- bearing housing
- cushion block
- tile
- incline
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Abstract
The utility model discloses a tilting pad bearing provided with a spring at the back of an upper pad, relates to a tilting pad bearing and aims at solving the problem that a steam turbine unit is instable. The rail directions of an upper bearing bush and a lower bearing bush are supported by a support assembly; four bearing block inner holes are annularly formed in the inner wall of a bearing casing; a support block is arranged in the inner hole of each bearing block in a close fit manner; a cushion block mounting hole is formed in the back of the upper tilting pad; a cushion block mounting hole is formed in the outer wall of a lower tilting pad; an adjusting cushion block is arranged in the cushion block mounting hole; the supporting end of the support block is contacted with the adjusting cushion block; four spherical cushion blocks are arranged on the outer wall of the bearing casing and are used for connecting the bearing casing with a bearing box; a pressure spring mounting hole is formed in the back of the upper tilting pad along the steering oil outlet side; a pressure spring is arranged in the pressure spring mounting hole; and the pressure spring is arranged between the upper tilting pad and the bearing casing through screws. The tilting pad bearing disclosed by the utility model is used for the steam turbine unit.
Description
Technical field
The utility model relates to a kind of tilting-pad bearing, is specifically related to a kind of tilting-pad bearing of Shang watt watt back of the body mounting spring, belongs to the machinery technical field of bearings.
Background technique
At present, the tilting-pad bearing that is used for the high speed rotating unit generally is made up of some tile fragments, and tile fragment is provided with the segmental tile back of the body eccentric with rotating shaft; Making itself and bearing housing is that line contacts; Therefore tile fragment can be swung at circumferencial direction, changes the angle of wedge that forms with journal surface, adapts to different operating modes.Along with the development of power station steam turbine industry, be that stability requirement is increasingly high to the steam turbine set axle, but there is unstable phenomenon in steam turbine set axle system, therefore, demands designing that a kind of to avoid axle be the tilting-pad bearing of unstable phenomenon urgently.
The model utility content
The purpose of the utility model is to have the problem of unstability in order to solve steam turbine set axle system, so provide a kind of Shang watt watt carry on the back the tilting-pad bearing of mounting spring.
The technological scheme of the utility model is: the tilting-pad bearing of Shang watt watt back of the body mounting spring comprises top brass, lower brasses, bearing housing, supporting component, oil inlet hole cushion block, four sphere cushion blocks, two stage clips and two axial limiters, and top brass is made up of the tile that can incline on two, and lower brasses is made up of the tile that can incline under two; Bearing housing comprises upper half-shell and housing lower half, and upper half-shell and housing lower half are fixed through straight pin, has annular groove on the axial end of bearing housing; Also have axial bore and radial hole on the bearing housing, axial bore is communicated with radial hole, and the oil inlet hole cushion block is installed in the lower end of bearing housing; The tile that can incline on two is arranged on the upper half-shell inwall, and the tile that can incline under two is arranged on the housing lower half inwall, and each axial limiter includes oil seal ring and oil sealing ring body; Have radially oil drainage hole on the oil sealing ring body, oil seal ring is fixedly connected on the inside of oil sealing ring body, and the two ends of bearing housing respectively are equipped with an axial limiter; Be used to limit the axial position of top brass and lower brasses; Radially supporting of top brass and lower brasses by supporting component, supporting component comprises four adjustment cushion blocks and four support blocks, the support end of support block is a sphere; Annular has four inner hole of bearing seat on the inwall of bearing housing; The angle of the axis of inner hole of bearing seat and the horizontal center line of bearing housing is 45 degree, and equal drive fit is equipped with a support block in each inner hole of bearing seat, and the back of the tile that can incline on each all has the cushion block mounting hole; All have the cushion block mounting hole on the outer wall of each tile that can incline down; The angle of the axis of cushion block mounting hole and the horizontal center line of bearing housing is 45 degree, is provided with an adjustment cushion block in each cushion block mounting hole, and the support end of support block contacts with the adjustment cushion block; Four sphere cushion blocks are installed on the outer wall of bearing housing; The angle of the center line of sphere cushion block and the horizontal center line of bearing housing is 45 degree, and the sphere cushion block is used for being connected of bearing housing and bearing housing, and the back of the tile that can incline on each offers the stage clip mounting hole along the fuel-displaced side that turns to; In the stage clip mounting hole stage clip is set, stage clip is arranged on through screw and can inclines between tile and the bearing housing.
The utility model compared with prior art has following effect: can incline on the utility model tile structure with under the tile structure that can incline there are differences, a watt back is equipped with stage clip, under the deadweight condition; Can form oil film wedge in tile oil-feed side; Created advantage for forming stable oil film, the oil-feed side and the axle journal that have reduced tile produce braking, help lubricant oil and get into tiling; Eliminate the drawback of oil film unstability, and then improved the stability of unit.
Description of drawings
Fig. 1 is the overall structure half sectional view of tilting-pad bearing of Shang watt watt back of the body mounting spring of the utility model, and Fig. 2 is the A-A sectional view of Fig. 1, Fig. 3 be the B of Fig. 1 to view, Fig. 4 is the C place enlarged view of Fig. 1.
Embodiment
Embodiment one: combine Fig. 1 to Fig. 4 that this mode of execution is described, this mode of execution Shang watt watt carry on the back mounting spring tilting-pad bearing comprise top brass 2, lower brasses 3, bearing housing 5, supporting component, four sphere cushion blocks 6, oil inlet hole cushion block 1, two stage clips 13 and two axial limiters, top brass 2 is made up of the tile that can incline on two; Lower brasses 3 is made up of the tile that can incline under two, and bearing housing 5 comprises upper half-shell and housing lower half, and upper half-shell and housing lower half are fixing through straight pin 16; Have annular groove 5-3 on the axial end of bearing housing 5, also have axial bore 5-1 and radial hole 5-2 on the bearing housing 5, axial bore 5-1 is communicated with radial hole 5-2; Oil inlet hole cushion block 1 is installed in the lower end of bearing housing 5, and the tile that can incline on two is arranged on the upper half-shell inwall, and the tile that can incline under two is arranged on the housing lower half inwall; Each axial limiter includes oil seal ring 4 and oil sealing ring body 8; Have radially oil drainage hole 8-1 on the oil sealing ring body 8, oil seal ring 4 is fixedly connected on the inside of oil sealing ring body 8, and the two ends of bearing housing 5 respectively are equipped with an axial limiter; Be used to limit the axial position of top brass 2 and lower brasses 3; Radially supporting of top brass 2 and lower brasses 3 by supporting component, supporting component comprises four adjustment cushion blocks 9 and four support blocks 10, the support end of support block 10 is a sphere; Annular has four inner hole of bearing seat on the inwall of bearing housing 5; The angle of the horizontal center line of the axis of inner hole of bearing seat and bearing housing 5 is 45 degree, and equal drive fit is equipped with a support block 10 in each inner hole of bearing seat, and the back of the tile that can incline on each all has the cushion block mounting hole; All have the cushion block mounting hole on the outer wall of each tile that can incline down; The angle of the horizontal center line of the axis of cushion block mounting hole and bearing housing 5 is 45 degree, is provided with an adjustment cushion block 9 in each cushion block mounting hole, and the support end of support block 10 contacts with adjustment cushion block 9; Four sphere cushion blocks 6 are installed on the outer wall of bearing housing 5; The angle of the horizontal center line of the center line of sphere cushion block 6 and bearing housing 5 is 45 degree, and sphere cushion block 6 is used for being connected of bearing housing 5 and bearing housing, and the back of the tile that can incline on each offers the stage clip mounting hole along the fuel-displaced side that turns to; Stage clip 13 is set in the stage clip mounting hole, and stage clip 13 is arranged on through screw and can inclines between tile and the bearing housing 5.
The thickness realization bearing of change adjustment cushion block 9 moves vertical and substantially horizontal, guarantees the accurate location of rotor in cylinder.
Embodiment two: combine Fig. 1 that this mode of execution is described, this mode of execution Shang watt watt carry on the back mounting spring tilting-pad bearing also comprise stop pin 7, stop pin 7 is installed on the outer wall of bearing housing 5.So be provided with, be used to prevent that bearing from rotating in bearing support.Other composition is identical with embodiment one with annexation.
Embodiment three: combine Fig. 1 and Fig. 3 that this mode of execution is described, the oil-feed side of the tile that can incline on each of this mode of execution has notch 14.Other composition is identical with embodiment one or two with annexation.
Working procedure; Lubricant oil is through getting into the housing lower half of bearing housing at the aperture at oil inlet hole cushion block 1 center; Have annular groove on the bearing housing both ends of the surface, lubricant oil gets into each tile fragment of bearing through annular groove through the hole of opening in the horizontal and vertical directions, after the journal surface between each tile fragment distributes, discharges; Lubricant oil is discharged through the radially oil drainage hole 8-1 of oil sealing ring body 8, returns in the bearing housing.
Claims (3)
1. the tilting-pad bearing of Shang watt watt back of the body mounting spring, Shang watt watt carry on the back mounting spring tilting-pad bearing comprise top brass (2), lower brasses (3), bearing housing (5), oil inlet hole cushion block (1), supporting component, four sphere cushion blocks (6), two stage clips (13) and two axial limiters, top brass (2) is made up of the tile that can incline on two; Lower brasses (3) is made up of the tile that can incline under two, and bearing housing (5) comprises upper half-shell and housing lower half, and upper half-shell and housing lower half are fixing through straight pin (16); Have annular groove (5-3) on the axial end of bearing housing (5); Also have axial bore (5-1) and radial hole (5-2) on the bearing housing (5), axial bore (5-1) is communicated with radial hole (5-2), and oil inlet hole cushion block (1) is installed in the lower end of bearing housing (5); The tile that can incline on two is arranged on the upper half-shell inwall; The tile that can incline under two is arranged on the housing lower half inwall, and each axial limiter includes oil seal ring (4) and oil sealing ring body (8), has radially oil drainage hole (8-1) on the oil sealing ring body (8); Oil seal ring (4) is fixedly connected on the inside of oil sealing ring body (8); The two ends of bearing housing (5) respectively are equipped with an axial limiter, are used to limit the axial position of top brass (2) and lower brasses (3), it is characterized in that: radially being supported by supporting component of top brass (2) and lower brasses (3); Supporting component comprises four adjustment cushion blocks (9) and four support blocks (10); The support end of support block (10) is a sphere, and annular has four inner hole of bearing seat on the inwall of bearing housing (5), and the angle of the horizontal center line of the axis of inner hole of bearing seat and bearing housing (5) is 45 degree; Equal drive fit is equipped with a support block (10) in each inner hole of bearing seat; Can incline on each back of tile all has the cushion block mounting hole, all has the cushion block mounting hole on the outer wall of each tile that can incline down, and the angle of the horizontal center line of the axis of cushion block mounting hole and bearing housing (5) is 45 to spend; Be provided with an adjustment cushion block (9) in each cushion block mounting hole; The support end of support block (10) contacts with adjustment cushion block (9), and four sphere cushion blocks (6) are installed on the outer wall of bearing housing (5), and the angle of the horizontal center line of the center line of sphere cushion block (6) and bearing housing (5) is 45 degree; Sphere cushion block (6) is used for being connected of bearing housing (5) and bearing housing; Can incline on each back of tile offers the stage clip mounting hole along the fuel-displaced side that turns to, and stage clip (13) is set in the stage clip mounting hole, and stage clip (13) is arranged on through screw and can inclines between tile and the bearing housing (5).
2. the tilting-pad bearing of Shang watt watt back of the body mounting spring according to claim 1 is characterized in that: Shang watt watt carry on the back mounting spring tilting-pad bearing also comprise stop pin (7), stop pin (7) is installed on the outer wall of bearing housing (5).
3. the tilting-pad bearing of Shang watt watt back of the body mounting spring according to claim 1 and 2, it is characterized in that: the oil-feed side of the tile that can incline on each has notch (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201171390U CN202468703U (en) | 2012-03-26 | 2012-03-26 | Tilting pad bearing provided with spring at back of upper pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201171390U CN202468703U (en) | 2012-03-26 | 2012-03-26 | Tilting pad bearing provided with spring at back of upper pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468703U true CN202468703U (en) | 2012-10-03 |
Family
ID=46916862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201171390U Expired - Lifetime CN202468703U (en) | 2012-03-26 | 2012-03-26 | Tilting pad bearing provided with spring at back of upper pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468703U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619876A (en) * | 2012-03-26 | 2012-08-01 | 哈尔滨汽轮机厂有限责任公司 | Tilting pad bearing with groove on upper bush and spring on bush back |
| CN105370730A (en) * | 2015-12-18 | 2016-03-02 | 中车集团台州第七八一六工厂 | Tilting-pad bearing used for rotors |
| CN107202067A (en) * | 2017-05-29 | 2017-09-26 | 苏州固特斯电子科技有限公司 | A kind of bushing |
-
2012
- 2012-03-26 CN CN2012201171390U patent/CN202468703U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619876A (en) * | 2012-03-26 | 2012-08-01 | 哈尔滨汽轮机厂有限责任公司 | Tilting pad bearing with groove on upper bush and spring on bush back |
| CN105370730A (en) * | 2015-12-18 | 2016-03-02 | 中车集团台州第七八一六工厂 | Tilting-pad bearing used for rotors |
| CN105370730B (en) * | 2015-12-18 | 2018-11-13 | 中车集团台州第七八一六工厂 | A kind of tilting-pad bearing for rotor |
| CN107202067A (en) * | 2017-05-29 | 2017-09-26 | 苏州固特斯电子科技有限公司 | A kind of bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |