CN220622464U - Tilting pad type support thrust composite bearing for steam turbine - Google Patents
Tilting pad type support thrust composite bearing for steam turbine Download PDFInfo
- Publication number
- CN220622464U CN220622464U CN202322167352.3U CN202322167352U CN220622464U CN 220622464 U CN220622464 U CN 220622464U CN 202322167352 U CN202322167352 U CN 202322167352U CN 220622464 U CN220622464 U CN 220622464U
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- thrust
- radial
- bearing body
- bearing
- tile
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 60
- 239000000463 material Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses an inclinable tile type support thrust composite bearing for a steam turbine, which belongs to the technical field of bearings and comprises a bearing body, wherein a radial tile oil cavity is formed in the inner wall of the bearing body, a plurality of radial tiles are uniformly and circumferentially arranged in the radial tile oil cavity, thrust tile oil cavities are respectively formed at two end parts of the bearing body, a plurality of thrust tiles are uniformly and circumferentially arranged in each thrust tile oil cavity, the radial tile oil cavity is communicated with the thrust tile oil cavity, an oil inlet hole is formed in the outer wall of the top of the bearing body, the oil inlet hole is communicated with the radial tile oil cavity, a plurality of first oil drain holes are formed in the tops of the positions of the plurality of thrust tiles on the bearing body, a plurality of second oil drain holes are formed in the tops of the positions of the plurality of radial tiles on the bearing body, and the plurality of second oil drain holes are all communicated with the radial tile oil cavity.
Description
Technical Field
The utility model belongs to the technical field of bearings, and particularly relates to an inclined tile type support thrust composite bearing for a steam turbine.
Background
The steam turbine is known as a national heavy machine as a crown of equipment manufacturing industry. Under the background of energy structure adjustment, "double carbon" in China, high-end equipment manufacturing import substitution and the like, the development potential of the steam turbine industry is large, the steam turbine industry is in a rapid rising stage, and the development and high-end upgrading of the industrial chain for driving the high-end equipment manufacturing industry in the industrial field are facilitated. Medium and light steam turbines are usually high-speed and high-efficiency equipment, the rotating speed of a rotor can reach 12000rpm, and the sliding bearings of the medium and light steam turbines usually adopt fluid dynamic bearings in the form of tilting pads, including support (radial) bearings and thrust bearings. The radial bearing mainly supports the rotor, and has the functions of supporting rigidity, bearing radial load, damping and absorbing vibration and guaranteeing the stability and the operation precision of the rotor; the thrust bearing mainly bears the axial load of the rotor and the limiting function, the thrust surface of the thrust bearing forms a 'relative dead point' of the whole shafting of the steam turbine, the axial specific pressure born by the thrust bearing can reach 2.0MPa, and the thrust bearing belongs to the working condition of high speed and heavy load.
Because the space of the whole machine equipment is limited, the structural arrangement of the radial bearing and the thrust bearing is as compact as possible, the total length of the rotor can be shortened, the rotor dynamics can be effectively improved, the radial and thrust bearings of the traditional configuration are split type structure combined bearings, the size and shape of the combined bearings are large, the accumulated machining and assembly errors are large, the radial bearing and the thrust bearing adopt independent oil supply modes, a higher margin is added in the actual oil demand of the bearing, the oil inlet quantity is overlarge, the stirring flow is formed by excessive cavity volume oil, and the additional power consumption is increased.
Disclosure of Invention
The embodiment of the utility model provides an inclined tile type supporting thrust composite bearing for a steam turbine, which aims to solve the problems in the prior art.
The embodiment of the utility model adopts the following technical scheme: the utility model provides a steam turbine is with tilting pad type support thrust composite bearing, includes the bearing body, the inner wall of bearing body is provided with radial tile oil pocket, radial tile oil pocket in even encircle and be provided with a plurality of radial tiles, the both ends department of bearing body all is provided with thrust tile oil pocket, and the even encircle of every thrust tile oil pocket is provided with a plurality of thrust tiles, radial tile oil pocket and thrust tile oil pocket intercommunication, the top outer wall department of bearing body is provided with an inlet port, inlet port and radial tile oil pocket intercommunication, a plurality of thrust tile position tops on the bearing body are provided with a plurality of first oil drain holes, a plurality of first oil drain holes all communicate with thrust tile oil pocket, a plurality of radial tile position tops on the bearing body are provided with a plurality of second oil drain holes, a plurality of second oil drain holes all communicate with radial tile oil pocket.
Further, a plurality of radial limit bolts are arranged around the outer wall of the bearing body, the radial limit bolts are respectively located at the tops of the radial tiles, and each radial limit bolt penetrates through the bearing body to limit the corresponding radial tile.
Further, the top of each thrust pad is provided with a thrust limit bolt, each thrust limit bolt is located at the outer side of the bearing body, and each thrust limit bolt penetrates through the bearing body to limit the matched thrust pad.
Further, the inner side wall of each thrust tile oil cavity is provided with a plurality of communication holes which are arranged in a surrounding mode and penetrate into the thrust tile oil cavity.
Further, sealing rings coaxial with the bearing body are arranged at the oil cavities of the two thrust tiles.
Furthermore, the bearing body, the radial pad and the thrust pad base material are all made of forged alloy steel materials.
Further, a plurality of wire clamps are arranged at two end parts of the bearing body.
Compared with the prior art, the beneficial effects of this application are:
1. the radial bearing and the thrust bearings at the two ends share an oil way, a sealing structure and an internal oil cavity are designed to ensure complete infiltration of the radial bearing and the thrust bearings, oil inlet and return realize better cold and hot oil exchange efficiency, the utilization rate of lubricating oil is improved, and the waste in design is reduced;
2. the radial bearing and the thrust bearing are designed into an integrated structure, the thrust is distributed on two sides of the radial bearing, the structure is compact, the bearing precision is high, the axial positioning is accurate, and the installation, the use and the maintenance are convenient;
3. the radial bearing and the thrust bearing both adopt direct injection type lubrication structures, and compared with a soaking type structure, the radial bearing and the thrust bearing have the characteristics of low power consumption and oil saving performance;
4. the radial bearing and the thrust bearing have high degree of freedom and can be adaptively adjusted according to the running state of the rotor;
5. the radial bearing tilting pad adopts a spherical supporting structure, and has extremely high supporting rigidity and higher bearing capacity.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a perspective view of a first embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a three-dimensional structure of the present utility model;
FIG. 4 is a schematic perspective view of a bearing body according to the present utility model;
fig. 5 is a perspective structural sectional view of the bearing body of the present utility model.
Drawings
1-a bearing body; 11-radial tile oil chamber; 12-thrust tile oil chamber; 13-an oil inlet hole; 14-a first oil drain hole; 15-a second oil drain hole; 16-communicating holes; 2-radial tiling; 3-thrust pads; 4-radial limit bolts; 5-thrust limit bolts; 6-sealing ring; 7-wire clamps.
Description of the embodiments
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The following describes in detail the technical solutions provided by the embodiments of the present utility model with reference to the accompanying drawings.
Referring to fig. 1 to 5, an embodiment of the utility model provides an inclinable tile type support thrust composite bearing for a steam turbine, wherein a radial bearing is arranged in the middle of the bearing, thrust bearings are arranged on two sides of the radial bearing to form a radial double-thrust composite bearing, the composite bearing mainly comprises a bearing body 1, a radial tile oil cavity 11 is arranged on the inner wall of the bearing body 1, a plurality of radial tiles 2 are uniformly and circumferentially arranged in the radial tile oil cavity 11, thrust tile oil cavities 12 are uniformly and circumferentially arranged at two ends of the bearing body 1, a plurality of thrust tiles 3 are uniformly and circumferentially arranged in each thrust tile oil cavity 12, the radial tile oil cavity 11 and the thrust tile oil cavity 12 are communicated, an oil inlet 13 is arranged on the outer wall of the top of the bearing body 1, the oil inlet 13 is communicated with the radial tile oil cavity 11, a plurality of first oil drain holes 14 are arranged at the top of the positions of the plurality of thrust tiles 3 on the bearing body 1, a plurality of radial tile oil drain holes 2 are uniformly and circumferentially arranged at the top of the bearing body 1, a plurality of second oil drain holes 15 are uniformly and circumferentially arranged at the top of the positions of the plurality of radial tile 2 on the bearing body 1, and are uniformly communicated with the radial tile oil cavity 11.
Specifically, the outer wall department of bearing body 1 encircles and is provided with a plurality of radial stop bolts 4, and a plurality of radial stop bolts 4 are located the top department of a plurality of radial tiles 2 respectively, and every radial stop bolt 4 all passes bearing body 1 and carries out spacingly to the radial tile 2 of looks adaptation.
Specifically, the top of each thrust pad 3 is provided with a thrust limit bolt 5, each thrust limit bolt 5 is located outside the bearing body 1, and each thrust limit bolt 5 penetrates through the bearing body 1 to limit the matched thrust pad 3.
Specifically, a plurality of communication holes 16 are provided at the inner side wall of each of the thrust shoe oil chambers 12, which are circumferentially provided and penetrate into the thrust shoe oil chamber 12.
Specifically, sealing rings 6 coaxial with the bearing body 1 are arranged at the two thrust shoe oil cavities 12.
Specifically, the base materials of the bearing body 1, the radial pad 2 and the thrust pad 3 are all made of forged alloy steel materials.
Specifically, both ends department of bearing body 1 all is provided with a plurality of fastener 7, and the inside temperature of bearing body 1 generally needs real-time supervision, can be used for the temperature measurement component to walk the line through fastener 7, prevents that the wire from installing to interfere.
The radial pad 2 realizes axial and circumferential limiting through the radial pad oil cavity 11 and the radial limiting bolts 4 in the inner cavity of the bearing body 1, the bearing body 1 is simultaneously used as a thrust pad 3 to support and envelop along the excircle of the thrust pad 3, the tilting type thrust pad 3 realizes circumferential limiting by virtue of the thrust limiting bolts 5, the design of the eccentric supporting structure of the thrust pad 3 greatly increases the film thickness and has better lubricating performance in terms of lubricating oil passing property, and the thrust bearings on two sides are simultaneously provided with the oil cavities with certain sealing effect between the sealing rings 6 and the rotor thrust disc to realize that the radial pad 2 and the thrust pad 3 are immersed in lubricating oil, so that the faults such as high temperature and abnormal vibration caused by lean oil are avoided; the bearing body 1, the radial pad 2 and the thrust pad 3 are made of forged alloy steel materials, the bearing body is subjected to heat treatment and has higher structural strength, rigidity and wear resistance, an external oil way enters the radial pad oil cavity 11 of the bearing body 1 through the oil inlet holes 13, the radial pad oil cavity 11 and the thrust pad oil cavity 12 are communicated through a plurality of communication holes 16 respectively formed in two ends of the bearing body 1, a sealing ring 6 and a rotor piece design clearance are formed in the bearing body 1, a plurality of first oil drain holes 14 and second oil drain holes 15 are formed in the bearing body 1, and a complete oil inlet and oil drain structure realizes relatively uniform cold and hot oil circulation of the whole oil cavity.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (7)
1. The utility model provides a steam turbine is with tilting pad type support thrust composite bearing, includes bearing body (1), its characterized in that, the inner wall of bearing body (1) is provided with radial tile oil pocket (11), evenly encircle in radial tile oil pocket (11) and be provided with a plurality of radial tile oil pocket (2), the both ends department of bearing body (1) all is provided with thrust tile oil pocket (12), evenly encircle in each thrust tile oil pocket (12) and be provided with a plurality of thrust tile oil pocket (3), radial tile oil pocket (11) and thrust tile oil pocket (12) intercommunication, the top outer wall department of bearing body (1) is provided with an inlet port (13), inlet port (13) and radial tile oil pocket (11) intercommunication, a plurality of thrust tile oil pocket (3) position tops on bearing body (1) are provided with a plurality of first oil drain holes (14), a plurality of radial tile oil pocket (2) position tops on bearing body (1) are provided with a plurality of radial drain holes (15), a plurality of radial tile oil pocket (15) and a plurality of radial drain holes (15) all communicate.
2. The tilting pad type support thrust composite bearing for a steam turbine according to claim 1, wherein a plurality of radial limit bolts (4) are circumferentially arranged at the outer wall of the bearing body (1), the radial limit bolts (4) are respectively positioned at the tops of the radial pads (2), and each radial limit bolt (4) penetrates through the bearing body (1) to limit the corresponding radial pad (2).
3. The tilting pad type support thrust composite bearing for a steam turbine according to claim 1, wherein a thrust limit bolt (5) is arranged at the top of each thrust pad (3), each thrust limit bolt (5) is located on the outer side of the bearing body (1), and each thrust limit bolt (5) penetrates through the bearing body (1) to limit the matched thrust pad (3).
4. The tilting pad type support thrust composite bearing for a steam turbine according to claim 1, wherein a plurality of communication holes (16) which are circumferentially arranged and penetrate into the thrust pad oil chambers (12) are formed at the inner side wall of each of the thrust pad oil chambers (12).
5. The tilting pad type support thrust composite bearing for a steam turbine according to claim 1, wherein sealing rings (6) coaxial with the bearing body (1) are arranged at both thrust pad oil chambers (12).
6. The tilting pad type support thrust composite bearing for the steam turbine according to claim 1, wherein the bearing body (1), the radial pad (2) and the thrust pad (3) are made of forged alloy steel.
7. The tilting pad type support thrust composite bearing for a steam turbine according to claim 1, wherein a plurality of wire clamps (7) are provided at both end portions of the bearing body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322167352.3U CN220622464U (en) | 2023-08-14 | 2023-08-14 | Tilting pad type support thrust composite bearing for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322167352.3U CN220622464U (en) | 2023-08-14 | 2023-08-14 | Tilting pad type support thrust composite bearing for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220622464U true CN220622464U (en) | 2024-03-19 |
Family
ID=90213369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322167352.3U Active CN220622464U (en) | 2023-08-14 | 2023-08-14 | Tilting pad type support thrust composite bearing for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220622464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118149003A (en) * | 2024-05-11 | 2024-06-07 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Radial thrust combined sliding bearing for high-speed gear transmission device |
-
2023
- 2023-08-14 CN CN202322167352.3U patent/CN220622464U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118149003A (en) * | 2024-05-11 | 2024-06-07 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Radial thrust combined sliding bearing for high-speed gear transmission device |
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