CN113357260A - Novel million-level nuclear power tilting pad bearing - Google Patents
Novel million-level nuclear power tilting pad bearing Download PDFInfo
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- CN113357260A CN113357260A CN202110551430.2A CN202110551430A CN113357260A CN 113357260 A CN113357260 A CN 113357260A CN 202110551430 A CN202110551430 A CN 202110551430A CN 113357260 A CN113357260 A CN 113357260A
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- pad
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact bearings
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a novel million-level nuclear power tilting pad bearing, which comprises a bearing shell, a lower pad, an upper pad and a right pad, wherein the bearing shell is internally provided with the lower pad, the upper pad and the right pad, the circumferential angle of the lower pad is larger than that of the upper pad and the right pad, the lower pad and the right pad are both provided with high-pressure jacking shaft oil holes, the resultant force direction of the force of output oil of the high-pressure jacking shaft oil holes acting on a rotor is superposed with the center line of a fulcrum of the upper pad supported by the bearing shell or forms an included angle within a certain range, compared with the prior art, the material cost is saved to the maximum extent through reasonable structural design, the condition that the bottom of the rotor is short of support is changed, meanwhile, the acting force of left and right limit is applied to the rotor, the condition that the rotor moves upwards when starting is eliminated, and the rotor can more quickly enter a dynamic balance state from a static balance when starting, and the interference of the pads on the dynamic balance state of the rotor in the operation process is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of million-level nuclear power units, in particular to the technical field of novel million-level nuclear power tilting pad bearings.
[ background of the invention ]
At present, the conventional million-grade nuclear power tilting pad bearing is composed of four pads (as shown in figure 1), and the material cost is high; the circumferential angle of each bearing tile is 90 degrees, partial bearing tiles are removed from two sides of the horizontal center and the vertical center, the contact type of the back of each bearing tile and a spherical cushion block of the shell is point contact, all the spherical cushion blocks are rigid supports, high-pressure jacking oil is introduced into two lower bearing tiles, and a high-pressure jacking oil hole and a back fulcrum are both arranged at the center of each bearing tile. After assembly, the horizontal center line and the vertical center line of the rotor are both in a suspended state, and the acting force of bottom support and left-right limiting is lacked; when the high-pressure jacking shaft oil pump is started, the resultant force direction of the high-pressure jacking shaft oil acting force is upward, the top part has no reverse acting force to keep the rotor stable, upward movement is easy to generate during starting, and in the running process, the upper bearing shoe block is easy to be driven by the rotor to generate large amplitude swing to generate interference on the balance state of the rotor.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a novel million-level nuclear power tilting pad bearing which is reasonable in structural design, saves material cost to the maximum extent, changes the condition that the bottom of a rotor is short of support, applies a left and right limiting acting force to the rotor, eliminates the condition of upward movement generated when the rotor is started, enables the rotor to enter a dynamic balance state from static balance more quickly when the rotor is started, and reduces the interference of a pad block to the dynamic balance state of the rotor in the operation process.
In order to achieve the purpose, the invention provides a novel million-level nuclear power tilting pad bearing, which comprises a bearing shell, a lower pad, an upper pad and a right pad, wherein the bearing shell is internally provided with the lower pad, the upper pad and the right pad, the circumferential angle of the lower pad is larger than that of the upper pad and the right pad, the lower pad and the right pad are both provided with high-pressure jacking shaft oil holes, and the resultant force direction of the force of output oil of the high-pressure jacking shaft oil holes, which acts on a rotor, is superposed with the center line of a fulcrum of the bearing shell supporting the upper pad or forms an included angle within a certain range.
Preferably, the bearing housing supports the upper pad such that a fulcrum center line of the upper pad and a center line of the upper pad do not coincide.
Preferably, the bearing housing supports the lower pad, and the fulcrum center line of the lower pad is not coincident with the center line of the lower pad and is coincident with the center line of the high-pressure top shaft oil hole in the lower pad.
Preferably, the center line of the fulcrum of the bearing shell supporting the right pad is not coincident with the center line of the right pad and is coincident with the center line of the high-pressure top shaft oil hole in the right pad.
Preferably, the circumferential angle of the lower pad is: 102-107 degrees, and the circumferential angle between the center line of the fulcrum of the lower pad supported by the bearing shell and the vertical center line of the bearing shell is as follows: 20 ~ 22, the bearing housing supports the circumference angle between the fulcrum central line of lower tile and the right-hand member of lower tile: 45-48 degrees.
Preferably, the circumferential angle of the right pad is: 53 ~ 58, the circumference angle between the fulcrum central line that bearing housing supported right pad and the horizontal central line of bearing housing is: 3 ~ 5, the bearing housing supports the circumference angle between the fulcrum central line of right pad and the upper end of right pad and is: 23-26 degrees.
Preferably, the circumferential angle of the upper pad is: 53 ~ 58, the circumference angle between the fulcrum central line that bearing housing supported upper shoe and the perpendicular central line of bearing housing is: 30 ~ 32, the bearing housing supports the circumference angle between the fulcrum central line of last pad and the left end of last pad and is: 23-26 degrees.
Preferably, an included angle between the resultant force direction of the forces acting on the rotor by the output oil of the two high-pressure top shaft oil holes and the fulcrum center line of the bearing housing supporting upper pad is greater than 0 ° and less than 5 °.
Preferably, the bearing shell is provided with a flexible supporting mechanism for supporting the upper pad, and the bearing shell is provided with two supporting bodies for respectively and rigidly supporting the lower pad and the right pad.
Preferably, the flexible supporting mechanism comprises a T-shaped sleeve, a disc spring, a blocking body, a sliding support sleeve and a bolt pair, the disc spring is sleeved on the small-diameter section of the T-shaped sleeve, the sliding support sleeve is arranged in the small-diameter section of the T-shaped sleeve, the blocking body pressed on the disc spring is arranged on the sliding support sleeve, and the T-shaped sleeve, the sliding support sleeve and the bearing shell are fixedly connected together through the bolt pair.
The invention has the beneficial effects that: 1. the tilting pad bearing is composed of 3 tilting pads, so that the material cost can be saved by about 39%; 2. the circumferential angle of the lower tile is larger than the circumferential angles of the upper tile and the right tile, the supporting surface of the lower tile on the arc surface of the rotor is large, the stability of the rotor is ensured, the supporting surfaces of the right tile and the upper tile on the arc surface of the rotor are small, and the interference of the tiles on the rotor in the operation process is reduced; 3. the oil output acting force of the high-pressure jacking shaft oil hole on the lower shoe block resists the gravity of the rotor, the oil output acting force of the high-pressure jacking shaft oil hole on the right shoe block exerts thrust on the rotor, the resultant force direction of the force of the output oil of the high-pressure jacking shaft oil hole acting on the rotor is overlapped with the center line of a fulcrum of the bearing shell supporting the upper shoe block or forms a certain included angle, so that the rotor is ensured to rapidly enter a dynamic balance state, the condition of upward movement generated when the rotor is started is eliminated, excessive displacement vibration of the rotor is avoided, and meanwhile, the acting force of left and right limiting is exerted on the rotor; 4. the supporting points of the bearing shell supporting the pads are staggered with the center of the pads, so that the pads can quickly enter a balanced state when being started; 5. adopt the rigidity to support lower tile fragment and right tile fragment, line contact can guarantee that the tile fragment is more firm to the supporting role of rotor, adopts flexible support to last tile fragment, avoids producing rigid contact when starting, protection tilting tile fragment hole.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a schematic structural view of a conventional tilting pad bearing;
fig. 2 is a schematic structural diagram of a novel million-level nuclear power tilting pad bearing.
In the figure: 1-bearing shell, 2-lower shoe block, 3-upper shoe block, 4-right shoe block, 5-high-pressure jacking shaft oil hole, 6-flexible supporting mechanism, 7-supporting body, 8-bearing shoe block, 9-spherical cushion block, 61-T-shaped sleeve, 62-disc spring, 63-baffle, 64-sliding support sleeve and 65-bolt pair.
[ detailed description ] embodiments
Referring to fig. 2, the novel million-level nuclear power tilting pad bearing of the invention comprises a bearing shell 1, a lower pad 2, an upper pad 3 and a right pad 4, wherein the bearing shell 1 is internally provided with the lower pad 2, the upper pad 3 and the right pad 4, the circumferential angle of the lower pad 2 is larger than the circumferential angle of the upper pad 3 and the right pad 4, the lower pad 2 and the right pad 4 are both provided with a high-pressure jacking oil hole 5, the resultant force direction of the force of the output oil of the high-pressure jacking oil hole 5 acting on a rotor coincides with the center line of the fulcrum of the bearing shell 1 supporting the upper pad 3 or forms an included angle within a certain range, the center line of the fulcrum of the bearing shell 1 supporting the upper pad 3 does not coincide with the center line of the upper pad 3, the center line of the bearing shell 1 supporting the lower pad 2 does not coincide with the center line of the lower pad 2, the center line of the bearing shell 1 supporting the right pad 4 does not coincide with the center line of the right pad 4, the circumferential angle of the lower pad 2 is as follows: 102-107 degrees, and the circumferential angle between the center line of the fulcrum of the lower pad 2 supported by the bearing shell 1 and the vertical center line of the bearing shell 1 is as follows: 20 ~ 22, the bearing housing 1 supports the circumference angle between the fulcrum central line of lower pad 2 and the right-hand member of lower pad 2 and is: 45-48 degrees, the circumference angle of the right pad 4 is: 53 ~ 58, the circumference angle between the fulcrum central line that bearing housing 1 supported right pad 4 and the horizontal central line of bearing housing 1 is: 3 ~ 5, the bearing housing 1 supports the circumference angle between the fulcrum central line of right pad 4 and the upper end of right pad 4 and is: 23-26 degrees, the circumferential angle of the upper tile 3 is as follows: 53 ~ 58, the circumference angle between the fulcrum central line that bearing housing 1 supported last pad 3 and the perpendicular central line of bearing housing 1 is: 30 ~ 32, the circumference angle between the fulcrum central line that bearing housing 1 supported last tile 3 and the left end of last tile 3 is: 23-26 degrees, an included angle between a resultant force direction of forces acting on the rotor by the output oil of the two high-pressure jacking shaft oil holes 5 and a fulcrum center line of the bearing shell 1 for supporting the upper pad 3 is larger than 0 degree and smaller than 5 degrees, the bearing shell 1 is provided with a flexible supporting mechanism 6 for supporting the upper pad 3, the bearing shell 1 is provided with two supporting bodies 7 for respectively and rigidly supporting the lower pad 2 and the right pad 4, the flexible supporting mechanism 6 is in line contact with the upper pad 3, the two supporting bodies 7 are in line contact with the lower pad 2 and the right pad 4 respectively, the flexible supporting mechanism 6 comprises a T-shaped sleeve 61, a disc-shaped spring 62, a blocking body 63, a sliding supporting sleeve 64 and a bolt pair 65, the small-diameter section of the T-shaped sleeve 61 is sleeved with the disc-shaped spring 62, the small-diameter section of the T-shaped sleeve 61 is provided with the sliding supporting sleeve 64, the sliding supporting sleeve 64 is provided with the blocking body 63 pressing on the disc-shaped spring 62, the T-shaped sleeve 61, the sliding support 64 and the bearing housing 1 are fixedly connected together by a bolt pair 65.
The working process of the invention is as follows:
in the working process of the novel million-level nuclear power tilting pad bearing, the output oil acting force of the high-pressure jacking shaft oil hole 5 on the lower pad 2 resists the gravity of a rotor, the output oil acting force of the high-pressure jacking shaft oil hole 5 on the right pad 4 exerts thrust on the rotor, and the resultant force direction of the force of the output oil of the high-pressure jacking shaft oil hole 5 acting on the rotor coincides with the center line of a fulcrum of the upper pad 3 supported by the bearing shell 1 or forms a certain included angle.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (10)
1. A novel million-level nuclear power tilting pad bearing is characterized in that: the bearing comprises a bearing shell (1), a lower tile block (2), an upper tile block (3) and a right tile block (4), wherein the bearing shell (1) is internally provided with the lower tile block (2), the upper tile block (3) and the right tile block (4), the circumferential angle of the lower tile block (2) is larger than that of the upper tile block (3) and the right tile block (4), the lower tile block (2) and the right tile block (4) are respectively provided with a high-pressure jacking shaft oil hole (5), and the resultant force direction of the force of the output oil of the high-pressure jacking shaft oil hole (5) acting on a rotor coincides with the center line of a fulcrum of the upper tile block (3) supported by the bearing shell (1) or forms an included angle within a certain range.
2. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: the center line of a fulcrum of the bearing shell (1) supporting the upper pad (3) is not coincident with the center line of the upper pad (3).
3. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: the bearing shell (1) supports the center line of the fulcrum of the lower pad (2) and the center line of the lower pad (2) are not overlapped and are overlapped with the center line of the high-pressure top shaft oil hole (5) in the lower pad (2).
4. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: the bearing shell (1) supports the center line of the fulcrum of the right pad (4) and the center line of the right pad (4) are not overlapped and are overlapped with the center line of the high-pressure top shaft oil hole (5) in the right pad (4).
5. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: the circumferential angle of the lower pad (2) is as follows: 102-107 degrees, the circumferential angle between the center line of the fulcrum of the lower pad (2) supported by the bearing shell (1) and the vertical center line of the bearing shell (1) is as follows: 20 ~ 22, the bearing housing (1) supports the circumference angle between the fulcrum central line of lower pad (2) and the right-hand member of lower pad (2) and is: 45-48 degrees.
6. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: the circumferential angle of the right pad (4) is as follows: 53 ~ 58, the circumference angle between the fulcrum central line that bearing housing (1) supported right pad (4) and the horizontal central line of bearing housing (1) is: 3 ~ 5, the bearing housing (1) supports the circumference angle between the fulcrum central line of right pad (4) and the upper end of right pad (4) and is: 23-26 degrees.
7. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: the circumferential angle of the upper tile block (3) is as follows: 53 ~ 58, the circumference angle between the fulcrum central line that bearing housing (1) supported last pad (3) and the perpendicular central line of bearing housing (1) is: 30 ~ 32, the circumference angle between the fulcrum central line that bearing housing (1) supported last pad (3) and the left end of last pad (3) is: 23-26 degrees.
8. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: the included angle between the resultant force direction of the forces of the output oil of the two high-pressure top shaft oil holes (5) acting on the rotor and the fulcrum center line of the bearing shell (1) supporting the upper pad (3) is more than 0 degree and less than 5 degrees.
9. The novel million-stage nuclear tilting pad bearing according to claim 1, characterized in that: be equipped with flexible supporting mechanism (6) that support tile (3) on bearing housing (1), be equipped with two supporter (7) on bearing housing (1) and carry out hard support to tile (2) and right tile (4) down respectively, flexible supporting mechanism (6) are the line contact with the contact of last tile (3), two supporter (7) are the line contact with the contact of tile (2) and right tile (4) down respectively.
10. A novel megawatt nuclear tilting pad bearing as claimed in any one of claims 1 to 9, wherein: flexible supporting mechanism (6) are including T shape cover (61), belleville spring (62), the fender body (63), slip branch cover (64) and bolt pair (65), the cover is equipped with belleville spring (62) on the little diameter section of T shape cover (61), be equipped with slip branch cover (64) in the little diameter section of T shape cover (61), be equipped with on slip branch cover (64) and press fender body (63) on belleville spring (62), T shape cover (61), slip branch cover (64) and bearing housing (1) are in the same place through bolt pair (65) fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110551430.2A CN113357260A (en) | 2021-05-20 | 2021-05-20 | Novel million-level nuclear power tilting pad bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110551430.2A CN113357260A (en) | 2021-05-20 | 2021-05-20 | Novel million-level nuclear power tilting pad bearing |
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| Publication Number | Publication Date |
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| CN113357260A true CN113357260A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110551430.2A Pending CN113357260A (en) | 2021-05-20 | 2021-05-20 | Novel million-level nuclear power tilting pad bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115642753A (en) * | 2022-12-23 | 2023-01-24 | 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) | Reverse-through type coaxial three-support gear box high-speed rotor system |
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| CN102562783A (en) * | 2012-01-11 | 2012-07-11 | 西安交通大学 | Variable-performance radial bearing formed by controllable tilting pad and bearing pad |
| CN104314997A (en) * | 2014-08-19 | 2015-01-28 | 中广核工程有限公司 | Inclination detecting method and automatic rectification method for bearing bush |
| CN106015314A (en) * | 2016-07-28 | 2016-10-12 | 西安交通大学 | Rigidity adjustable radial sliding bearing with spring of tile block supporting point |
| CN107795577A (en) * | 2017-11-22 | 2018-03-13 | 中车集团台州第七八六工厂 | A kind of bush(ing) bearing |
| CN108302121A (en) * | 2018-04-13 | 2018-07-20 | 广州航海学院 | A kind of tilting bush sliding bearing |
| CN210769818U (en) * | 2019-10-29 | 2020-06-16 | 浙江申发轴瓦股份有限公司 | Novel tilting pad lubricating oil baffle |
-
2021
- 2021-05-20 CN CN202110551430.2A patent/CN113357260A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562783A (en) * | 2012-01-11 | 2012-07-11 | 西安交通大学 | Variable-performance radial bearing formed by controllable tilting pad and bearing pad |
| CN104314997A (en) * | 2014-08-19 | 2015-01-28 | 中广核工程有限公司 | Inclination detecting method and automatic rectification method for bearing bush |
| CN106015314A (en) * | 2016-07-28 | 2016-10-12 | 西安交通大学 | Rigidity adjustable radial sliding bearing with spring of tile block supporting point |
| CN107795577A (en) * | 2017-11-22 | 2018-03-13 | 中车集团台州第七八六工厂 | A kind of bush(ing) bearing |
| CN108302121A (en) * | 2018-04-13 | 2018-07-20 | 广州航海学院 | A kind of tilting bush sliding bearing |
| CN210769818U (en) * | 2019-10-29 | 2020-06-16 | 浙江申发轴瓦股份有限公司 | Novel tilting pad lubricating oil baffle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115642753A (en) * | 2022-12-23 | 2023-01-24 | 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) | Reverse-through type coaxial three-support gear box high-speed rotor system |
| CN115642753B (en) * | 2022-12-23 | 2023-03-03 | 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) | Reverse-through type coaxial three-support gear box high-speed rotor system |
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