CN203756735U - Thrust support bearing of steam turbine rotor - Google Patents
Thrust support bearing of steam turbine rotor Download PDFInfo
- Publication number
- CN203756735U CN203756735U CN201420172875.5U CN201420172875U CN203756735U CN 203756735 U CN203756735 U CN 203756735U CN 201420172875 U CN201420172875 U CN 201420172875U CN 203756735 U CN203756735 U CN 203756735U
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- Prior art keywords
- thrust
- bearing
- thrust bearing
- ring
- bearing shoe
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- 238000005259 measurement Methods 0.000 claims abstract description 8
- 229910000897 Babbitt (metal) Inorganic materials 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000012634 fragment Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a bearing of a steam turbine rotor, and in particular relates to a thrust support bearing of a steam turbine rotor, aiming at solving the problem that the long-term reliable and stable operation of a steam turbine generator set under the conditions of high rotating speed and large axial and radial loads cannot be achieved by a radial thrust bearing combined structure of an existing 200,000-kilowatt steam turbine generator set. The surface of the outer side wall of a bearing body is a convex spherical surface, the surface of the inner side wall of a bearing bush is a concave spherical surface, and the convex spherical surface is matched with the concave spherical surface; an inner cavity of the bearing body is an oval through cavity; twelve thrust pads are evenly distributed on the circumference of thrust pad measurement rings, and a gap is formed between every two adjacent thrust pads; the two thrust pad measurement rings are respectively fixedly connected with the bearing body; gaps between through holes I and every two adjacent thrust pads are in one-to-one correspondence; oil nozzles are communicated and fixedly connected with the through holes I; through holes II are communicated with the through holes I in one-to-one correspondence; oil holes are communicated with the through holes II in one-to-one correspondence. The thrust support bearing is used for supporting the steam turbine rotor.
Description
Technical field
The utility model relates to a kind of turbine rotor bearing.
Background technique
The thrust sector of the combined radial and axial bearing structure of existing 200,000 kilowatts of steam-turbine units is being supported part one side, affected by self gravitation, need special support, so that this bearing can bear axially and radial load little, and the thrust that can bear is little, can not meet steam turbine power generation unit at high rotating speed, large axially and under radial load condition, realize steam-turbine unit smooth running needs stably in a long term.
Model utility content
The purpose of this utility model is to provide a kind of turbine rotor thrust radial journal bearing, to solve the combined radial and axial bearing structure of existing 200,000 kilowatts of steam-turbine units, can not meet steam turbine power generation unit at high rotating speed, large axially and under radial load condition, realizing steam-turbine unit smooth running stably in a long term needs problem.
The utility model is to address the above problem the technological scheme of taking to be: described radial journal bearing of the present utility model comprises bearing support, axle bush sleeve, nozzle component and two groups of thrust bearing shoe valves measurement ring member,
The outer side wall surface of bearing support is protruding sphere, and the interior side-wall surface of axle bush sleeve is concave spherical surface, and protruding sphere matches with concave spherical surface,
Bearing support comprises two annulus gear eaves, and bearing support inner chamber is oval cavity, and two annulus gear eaves are coaxially affixed with bearing support two ends respectively,
Thrust bearing shoe valve is measured ring member and is comprised thrust bearing shoe valve measurement ring and 12 thrust bearing shoe valves, thrust bearing shoe valve is pendulum moving wire type thrust bearing shoe valve, 12 thrust bearing shoe valves are distributed in thrust bearing shoe valve and measure on the circumference of ring one end toroidal surface, and be provided with gap between any two adjacent thrust bearing shoe valves, the arc surface of thrust bearing shoe valve offers arc-shaped slot along arc length direction, thrust bearing shoe valve is measured ring and is comprised 12 arc gear eaves, 12 arc gear eaves are distributed in thrust bearing shoe valve and measure on the circumference of ring one end toroidal surface, arc-shaped slot matches with arc gear eaves, the toroidal surface that the thrust bearing shoe valve corresponding with each arc gear eaves measured ring is provided with two pins, on the bottom surface of thrust bearing shoe valve, offer two blind holes, pin matches with blind hole,
It is coaxially affixed with two end faces of bearing support respectively that two thrust bearing shoe valves are measured the other end toroidal surface of ring, and thrust bearing shoe valve measures ring and be arranged in annulus gear eaves,
The thickness direction of measuring ring along thrust bearing shoe valve offers 12 through holes one, and the gap corresponding setting one by one between through hole one and any two adjacent thrust bearing shoe valves,
Nozzle component comprises 12 oil nozzles, and oil nozzle is communicated with affixed with through hole one,
Along bearing support axially offer 12 through holes two, through hole two and through hole be corresponding being connected one by one,
Circumferencial direction along the protruding sphere of bearing support offers ring oil groove, offers 12 oilholes in ring oil groove, and oilhole is radially offered, and oilhole is connected with through hole 211 is corresponding.
The utility model compared with prior art has following beneficial effect: bearing support 1-0 of the present utility model coordinates with the sphere-contact of axle bush sleeve 2-0 and guarantees that bearing of the present utility model is with rotor bow distortion needs and adjustment automatically, between the tile fragment thrust face that makes thrust bearing shoe valve 3-1 and rotor thrust panel surface, has better contact.Bearing support 1-0 inner chamber 1-4 is oval-shaped cavity, can radially adjust bearing centre of the present utility model position.Thrust bearing shoe valve 3-1 is pendulum moving wire type tile fragment, and thrust bearing shoe valve 3-1 measures ring 3-2 with thrust bearing shoe valve and contacts as line supports contact, and during bearing operation of the present utility model, thrust bearing shoe valve 3-1 can wing drop form oil film wedge, makes to form dynamic pressure oil film between thrust bearing shoe valve 3-1 surface and thrust disc.12 oil nozzle 4-1 can effectively guarantee bearing sufficient lubrication of the present utility model and reduce temperature of rotor.Two groups of thrust bearing shoe valves are measured ring member and are arranged at respectively on two end faces of bearing support, make shaft strength of the present utility model balanced, do not need special support, thereby prior art has been dwindled boundary dimension relatively, saved installing space, and support part to be positioned at the axial middle part of bearing support, thereby make bearing of the present utility model can bear larger axial and radial load.Use after bearing of the present utility model, can be used in 200,000 kilowatts of above rotors, maximum can be born the rotor of 1,000,000 kilowatts.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model, and Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is that the B of Fig. 2 is to view, Fig. 4 is the plan view of bearing support 1-0, and Fig. 5 is the C-C sectional view of Fig. 4, and Fig. 6 is the D-D sectional view of Fig. 5, Fig. 7 is the plan view of thrust bearing shoe valve 3-1, and Fig. 8 is the E-E sectional view of Fig. 7.
Embodiment
Embodiment one: illustrate in conjunction with Fig. 1 to Fig. 8, the described radial journal bearing of present embodiment comprises bearing support 1-0, axle bush sleeve 2-0, nozzle component and two groups of thrust bearing shoe valves measurement ring member,
The outer side wall surface of bearing support 1-0 is protruding sphere, and the interior side-wall surface of axle bush sleeve 2-0 is concave spherical surface, and protruding sphere matches with concave spherical surface,
Bearing support 1-0 comprises two annulus gear eaves 1-1, and bearing support 1-0 inner chamber 1-4 is oval cavity, and two annulus gear eaves 1-1 are coaxially affixed with bearing support 1-0 two ends respectively,
Thrust bearing shoe valve is measured ring member and is comprised thrust bearing shoe valve measurement ring 3-2 and 12 thrust bearing shoe valve 3-1, thrust bearing shoe valve 3-1 is pendulum moving wire type thrust bearing shoe valve, 12 thrust bearing shoe valve 3-1 are distributed in thrust bearing shoe valve and measure on the circumference of ring 3-2 one end toroidal surface, and be provided with gap between any two adjacent thrust bearing shoe valve 3-1, the arc surface of thrust bearing shoe valve 3-1 offers arc-shaped slot 3-11 along arc length direction, thrust bearing shoe valve is measured ring 3-2 and is comprised 12 arc gear eaves 3-22, 12 arc gear eaves 3-22 are distributed in thrust bearing shoe valve and measure on the circumference of ring 3-2 one end toroidal surface, arc-shaped slot 3-11 matches with arc gear eaves 3-22, the toroidal surface that the thrust bearing shoe valve corresponding with each arc gear eaves 3-22 measured ring 3-2 is provided with two pin 3-23, on the bottom surface of thrust bearing shoe valve 3-1, offer two blind hole 3-12, pin 3-23 matches with blind hole 3-12,
It is coaxially affixed with two end faces of bearing support 1-0 respectively that two thrust bearing shoe valves are measured the other end toroidal surface of ring 3-2, and thrust bearing shoe valve measures ring 3-2 and be arranged in annulus gear eaves 1-1,
The thickness direction of measuring ring 3-2 along thrust bearing shoe valve offers 12 through hole one 3-3, and the gap corresponding setting one by one between through hole one 3-3 and any two adjacent thrust bearing shoe valve 3-1,
Nozzle component comprises 12 oil nozzle 4-1, and oil nozzle 4-1 is communicated with affixed with through hole one 3-3,
Along bearing support 1-0 axially offer 12 through hole two 1-2, through hole two 1-2 and through hole one 3-3 be corresponding being connected one by one,
Circumferencial direction along the protruding sphere of bearing support 1-0 offers ring oil groove 1-5, offers 12 oilhole 1-3 in ring oil groove 1-5, and oilhole 1-3 radially offers, and oilhole 1-3 and through hole two 1-2 corresponding being connected one by one.
Embodiment two: illustrate in conjunction with Fig. 1 to Fig. 8, the described turbine rotor of present embodiment also comprises two flinger ring 1-6 with thrust radial journal bearing, flinger ring 1-6 is coaxially flexibly connected with annulus shelves eaves 1-1.
By both sides flinger ring, make the inner chamber that forms of bearing, make the abundant submergence of thrust bearing shoe valve 3-1, guarantee that thrust bearing shoe valve 3-1 is lubricated, meet design usage requirement.
In present embodiment, undocumented technical characteristics is identical with embodiment one.
Embodiment three: illustrate in conjunction with Fig. 1 to Fig. 8, the width of the bearing support 1-0 of present embodiment is 0.7 with diameter ratio.
This width has guaranteed that with diameter ratio bearing of the present utility model self can bear larger load and effectively guarantee this antiwhip.
In present embodiment, undocumented technical characteristics is identical with embodiment one or two.
Embodiment four: illustrate in conjunction with Fig. 1 to Fig. 8, the bearing support 2-0 of present embodiment is the surperficial bearing support that waters bearing metal.Bearing metal has good wear resistance, sets up good power oil film create conditions for bearing surface.Meet and use and designing requirement.
In present embodiment, undocumented technical characteristics is identical with embodiment three.
Embodiment five: illustrate in conjunction with Fig. 1 to Fig. 8, the axle bush sleeve 2-0 of present embodiment comprises half-watt cover and lower half-watt cover, upper half-watt cover is interlocked with lower half-watt cover, and the concave spherical surface of lower half-watt cover is provided with stop pin.
The activity that prevents bearing support 1-0 surpasses axle bush sleeve 2-0 allowed band.
In present embodiment, undocumented technical characteristics is identical with embodiment one.
Working principle
Rotor supports by bearing support 1-0, and when steam-turbine unit moves, rotor rotates and makes to form dynamic pressure oil film between rotor and bearing support 1-0 bore area, rotor thrust face and thrust bearing shoe valve 3-1, guarantees rotor lubrication.Bearing support 1-0 is fixed in bearing housing by axle bush sleeve 2-0, simultaneously, because of sphere-contact between the two, can guarantee that bearing support 1-0 does fine tune with rotor degree of raising.
Between each cushion block 5-2 and axle bush sleeve 2-0, by pad 5-1, adjust bearing of the present utility model, rotor is accurately located in cylinder.Chock 5-3 reaches in a groove of bearing housing support, prevents the rotation of bearing of the present utility model.
Lubricant oil enters in ring oil groove 1-5 by bearing top, via oilhole 1-3, through hole two 1-2, through hole one 3-3 and oil nozzle 4-1, flows out.
Claims (5)
1. a turbine rotor thrust radial journal bearing, is characterized in that: described radial journal bearing comprises bearing support (1-0), axle bush sleeve (2-0), nozzle component and two groups of thrust bearing shoe valves measurement ring member,
The outer side wall surface of bearing support (1-0) is protruding sphere, and the interior side-wall surface of axle bush sleeve (2-0) is concave spherical surface, and protruding sphere matches with concave spherical surface,
Bearing support (1-0) comprises two annulus gear eaves (1-1), and bearing support (1-0) inner chamber (1-4) is oval cavity, and two annulus gear eaves (1-1) are coaxially affixed with bearing support (1-0) two ends respectively,
Thrust bearing shoe valve is measured ring member and is comprised thrust bearing shoe valve measurement ring (3-2) and 12 thrust bearing shoe valves (3-1), thrust bearing shoe valve (3-1) is pendulum moving wire type thrust bearing shoe valve, 12 thrust bearing shoe valves (3-1) are distributed in thrust bearing shoe valve and measure on the circumference of ring (3-2) one end toroidal surface, and be provided with gap between any two adjacent thrust bearing shoe valves (3-1), the arc surface of thrust bearing shoe valve (3-1) offers arc-shaped slot (3-11) along arc length direction, thrust bearing shoe valve is measured ring (3-2) and is comprised 12 arc gear eaves (3-22), 12 arc gear eaves (3-22) are distributed in thrust bearing shoe valve and measure on the circumference of ring (3-2) one end toroidal surface, arc-shaped slot (3-11) matches with arc gear eaves (3-22), the toroidal surface that the thrust bearing shoe valve corresponding with each arc gear eaves (3-22) measured ring (3-2) is provided with two pins (3-23), on the bottom surface of thrust bearing shoe valve (3-1), offer two blind holes (3-12), pin (3-23) matches with blind hole (3-12),
It is coaxially affixed with two end faces of bearing support (1-0) respectively that two thrust bearing shoe valves are measured the other end toroidal surface of ring (3-2), and thrust bearing shoe valve measures ring (3-2) and be arranged in annulus gear eaves (1-1),
The thickness direction of measuring ring (3-2) along thrust bearing shoe valve offers 12 through holes one (3-3), and the gap corresponding setting one by one between through hole one (3-3) and any two adjacent thrust bearing shoe valves (3-1),
Nozzle component comprises 12 oil nozzles (4-1), and oil nozzle (4-1) is communicated with affixed with through hole one (3-3),
Along bearing support (1-0) axially offer 12 through holes two (1-2), through hole two (1-2) and through hole one (3-3) be corresponding being connected one by one,
Circumferencial direction along the protruding sphere of bearing support (1-0) offers ring oil groove (1-5), in ring oil groove (1-5), offer 12 oilholes (1-3), oilhole (1-3) is radially offered, and oilhole (1-3) and through hole two (1-2) corresponding being connected one by one.
2. turbine rotor according to claim 1 thrust radial journal bearing, is characterized in that: described turbine rotor also comprises two flinger rings (1-6) with thrust radial journal bearing, and flinger ring (1-6) is coaxially flexibly connected with annulus gear eaves (1-1).
3. turbine rotor according to claim 1 and 2 thrust radial journal bearing, is characterized in that: the width of bearing support (1-0) is 0.7 with diameter ratio.
4. turbine rotor according to claim 3 thrust radial journal bearing, is characterized in that: bearing support (2-0) is the surperficial bearing support that waters bearing metal.
5. turbine rotor according to claim 1 thrust radial journal bearing, is characterized in that: axle bush sleeve (2-0) comprises half-watt cover and lower half-watt cover, and upper half-watt cover is interlocked with lower half-watt cover, and the concave spherical surface of lower half-watt cover is provided with stop pin (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172875.5U CN203756735U (en) | 2014-04-10 | 2014-04-10 | Thrust support bearing of steam turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172875.5U CN203756735U (en) | 2014-04-10 | 2014-04-10 | Thrust support bearing of steam turbine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756735U true CN203756735U (en) | 2014-08-06 |
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ID=51252016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420172875.5U Expired - Lifetime CN203756735U (en) | 2014-04-10 | 2014-04-10 | Thrust support bearing of steam turbine rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756735U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642542A (en) * | 2017-09-25 | 2018-01-30 | 中车集团台州第七八六工厂 | A kind of high speed plain thrust bearing |
| CN110081070A (en) * | 2019-05-28 | 2019-08-02 | 中国船舶重工集团公司第十二研究所 | A kind of flexible thrust bearing |
| CN110985140A (en) * | 2019-12-20 | 2020-04-10 | 哈尔滨汽轮机厂有限责任公司 | Method for judging anti-seismic performance of steam turbine thrust bearing system |
| CN111623041A (en) * | 2020-06-08 | 2020-09-04 | 无锡市联谊机车配件制造有限公司 | Thrust bearing gasket and processing technology thereof |
| CN114013818A (en) * | 2021-11-17 | 2022-02-08 | 嘉利特荏原泵业有限公司 | Transportation and storage container for steam turbine rotor |
-
2014
- 2014-04-10 CN CN201420172875.5U patent/CN203756735U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642542A (en) * | 2017-09-25 | 2018-01-30 | 中车集团台州第七八六工厂 | A kind of high speed plain thrust bearing |
| CN107642542B (en) * | 2017-09-25 | 2024-01-09 | 台州七八一六船舶工业有限公司 | High-speed thrust sliding bearing |
| CN110081070A (en) * | 2019-05-28 | 2019-08-02 | 中国船舶重工集团公司第十二研究所 | A kind of flexible thrust bearing |
| CN110985140A (en) * | 2019-12-20 | 2020-04-10 | 哈尔滨汽轮机厂有限责任公司 | Method for judging anti-seismic performance of steam turbine thrust bearing system |
| CN111623041A (en) * | 2020-06-08 | 2020-09-04 | 无锡市联谊机车配件制造有限公司 | Thrust bearing gasket and processing technology thereof |
| CN114013818A (en) * | 2021-11-17 | 2022-02-08 | 嘉利特荏原泵业有限公司 | Transportation and storage container for steam turbine rotor |
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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 |
Granted publication date: 20140806 |
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| CX01 | Expiry of patent term |