CN102691724B - Circular bearing with part of radian for steam turbine - Google Patents
Circular bearing with part of radian for steam turbine Download PDFInfo
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- CN102691724B CN102691724B CN201210166433.5A CN201210166433A CN102691724B CN 102691724 B CN102691724 B CN 102691724B CN 201210166433 A CN201210166433 A CN 201210166433A CN 102691724 B CN102691724 B CN 102691724B
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Abstract
A circular bearing with part of radian for a steam turbine relates to a bearing for the steam turbine, and aims to solve the problems such as high bearing bush temperature, high return oil temperature, low bearing capacity, and failure in long-term reliable and stable operation of a turbogenerator set under the conditions of high rotational speed and large load of the circular bearing used in the turbogenerator set. An upper half bearing bush body and a lower half bearing bush body are positioned and centered through positioning pins; a gasket and a cushion block are mounted in mounting grooves of the bearing bush body; a second oil inlet hole in the upper half bearing bush is communicated with a first oil inlet hole of the lower bearing bush body; an eccentric circular arc-shaped middle oil storage groove is processed in the middle of the inner ring surface of the bearing bush body; the second oil inlet hole is communicated with the eccentric circular arc-shaped middle oil storage groove; an annular oil leakage groove and an eccentric circular arc-shaped lateral oil storage groove are processed in the inner ring surface of the bearing bush body. The circular bearing is used for a turbogenerator set, and ensures that the turbogenerator set can operate reliably and stably for a long time under the conditions of high rotational speed and large load.
Description
Technical field
The present invention relates to a kind of steam turbine bearing.
Background technique
Along with power station steam turbine capacity increases, the corresponding increasing of physical dimension of turbine rotor, its weight also strengthens thereupon.There is the problems such as bearing bush temperature is high, returning-oil temperature is high, bearing capacity is little in the circular journal bearing that former Turbo-generator Set is used, cannot meet Turbo-generator Set under high rotating speed, large loading condiction, realizes unit smooth running stably in a long term.
Summary of the invention
The object of this invention is to provide part radian circular journal bearing for a kind of steam turbine, to solve circular journal bearing that existing Turbo-generator Set used, have that bearing bush temperature is high, returning-oil temperature is high, bearing capacity is little, cannot meet Turbo-generator Set under high rotating speed, large loading condiction, realize the problem of unit smooth running stably in a long term.
The present invention addresses the above problem the technological scheme of taking to be:
Part radian circular journal bearing for steam turbine, described steam turbine comprises bearing liner body, bearing stop pin, thermocouple, oil nozzle, three pads, three cushion blocks and two locating studs with part radian circular journal bearing;
Bearing liner body comprises from first bearing liner body of its horizontal flange cutting and bottom half-bearing watt body, first bearing liner body and bottom half-bearing watt body are by two locating stud location centerings, first bearing liner body and a bottom half-bearing watt body removably connect, the outer ring surface of bearing liner body is sphere, on the outer ring surface of bearing liner body, near horizontal flange place, be radially processed with a pin-and-hole, and described pin-and-hole is arranged on bottom half-bearing watt body, one end of bearing stop pin is fixed in pin-and-hole, thickness direction along bearing liner body on the outer ring surface of bearing liner body is processed with three mounting grooves, one of them mounting groove of three mounting grooves is arranged on the top of first bearing liner body, another two mounting grooves in three mounting grooves are arranged on bottom half-bearing watt body, and each mounting groove in these another two mounting grooves and the angle α between the vertical center line M of bearing liner body are 45 °, a mounting groove in these another two mounting grooves communicates with the inner chamber of bearing liner body by the first oil inlet hole, along bearing liner body in the groove bottom of another mounting groove in these another two mounting grooves, be radially processed with a mounting hole communicating with the inner chamber of bearing liner body, a pad and a cushion block are installed in each mounting groove in three mounting grooves from the inside to the outside, the outer surface of cushion block is and the body concentric sphere of bearing liner, on the pad corresponding with the first oil inlet hole and cushion block, be processed with the filler opening communicating with the first oil inlet hole, the installation of TC is in mounting hole, the bottom of bottom half-bearing watt body is processed with radial direction through hole, oil nozzle is arranged in radial direction through hole, along bearing liner body on the inwall of first bearing liner body, be radially processed with the second oil inlet hole, angle β between the vertical center line M of the center line of the second oil inlet hole and bearing liner body is 45 °, the second oil inlet hole communicates with the first oil inlet hole by the oil transportation channel being arranged in bearing liner body, the middle part of the inner ring surface of bearing liner body is processed with the middle oil storage tank of eccentric circle arc, the second oil inlet hole communicates with oil storage tank in the middle of described eccentric circle arc, on the inner ring surface of bearing liner body, be processed with two annular drain pans and two eccentric circle arc side oil storage tanks, two annular drain pans are symmetrical arranged with respect to the vertical center line M of bearing liner body, two eccentric circle arc side oil storage tanks are symmetrical arranged the both sides end face setting of also close bearing liner body with respect to the vertical center line M of bearing liner body, in the middle of two eccentric circle arc side oil storage tanks and eccentric circle arc, oil storage tank is set up in parallel, in the middle of eccentric circle arc, the two ends of oil storage tank and the two ends of two eccentric circle arc side oil storage tanks are all arranged on bottom half-bearing watt body and are positioned on the inner ring surface of bearing liner body, the middle part that the inner ring surface of bearing liner body is positioned at bottom half-bearing watt body is supporting region, the central angle γ of supporting region is 120 °.
The invention has the beneficial effects as follows: the present invention has function lubricated and that bearing centre position is radially adjusted, and can reduce bearing bush temperature and returning-oil temperature, improve bearing capacity, can meet Turbo-generator Set under high rotating speed, large loading condiction, realized unit smooth running stably in a long term.The present invention has increased the middle oil storage tank of eccentric circle arc, two annular drain pans and two eccentric circle arc side oil storage tanks on the basis of original circular journal bearing, makes bearing can bear larger load, has met unit operation requirement.
Accompanying drawing explanation
Fig. 1 is overall structure plan view of the present invention; Fig. 2 is the C-C sectional view of Fig. 1; Fig. 3 is the B-B sectional view of Fig. 1; Fig. 4 is the X-direction view of Fig. 3; Fig. 5 is the plan view of bearing liner body; Fig. 6 is the A-A sectional view of Fig. 5, is positioned at the sense of rotation that shown in the arrow of first bearing liner body hatching, direction is bearing in figure; Fig. 7 is that the E of Fig. 6 is to view; Fig. 8 is the D-D sectional view of Fig. 6; Fig. 9 is the F-F sectional view of Fig. 6; Figure 10 is the plan view of the bottom half-bearing watt body 1-2 of Fig. 5.
Embodiment
Embodiment one: in conjunction with Fig. 1-Figure 10 explanation, part radian circular journal bearing for the steam turbine of present embodiment, described steam turbine comprises bearing liner body 1, bearing stop pin 2, thermocouple 3, oil nozzle 7, three pads 4, three cushion blocks 5 and two locating studs 6 with part radian circular journal bearing;
Three cushion blocks 5 in present embodiment are made by steel material.
Embodiment two: in conjunction with Fig. 8 and Fig. 9 explanation, the inner ring surface of bearing liner body 1 is provided with bearing alloy layer 1-13 described in present embodiment.Wear-resistant, to have improved bearing working life.Other is identical with embodiment one.
Embodiment three: in conjunction with Fig. 2, Fig. 3 and Fig. 8 explanation, bearing liner body 1 is cast steel bearing liner body described in present embodiment.Other is identical with embodiment one or two.
Working procedure: oil enters the first oil inlet hole 1-6, oil transportation channel 1-9 and the second oil inlet hole 1-8 successively through filler opening 1-7, and in the second oil inlet hole 1-8 enters the middle oil storage tank 1-10 of eccentric circle arc and two eccentric circle arc side oil storage tank 1-12, oil is lubricated bearing inside through the inner ring surface of bearing liner body 1 again, finally from two annular drain pan 1-11 and bearing face, discharge, this layout has guaranteed can supply reliably oil lubrication axle journal all the time.
Because one of them mounting groove 1-5 of three mounting groove 1-5 is arranged on the top of first bearing liner body 1-1, another two mounting groove 1-5 in three mounting groove 1-5 are arranged on bottom half-bearing watt body 1-2, and each the mounting groove 1-5 in these another two mounting groove 1-5 and the angle α between the vertical center line M of bearing liner body 1 are 45 °, therefore there is the constant relation [for level, vertical displacement equal (thickness/2) extraction of square root] of 0.7 between pad 4 thickness and bearing displacement.
Embodiment 1: in a mounting groove 1-5 who is arranged at bottom half-bearing watt body 1-2, place a cushion block 5 and on add a pad 4 that 0.125mm is thick, cause vertical displacement and the 0.7 * 0.125=0.0875mm Horizontal displacement of a 0.7 * 0.125=0.0875mm.
In two mounting groove 1-5 that are arranged at bottom half-bearing watt body 1-2, place two cushion blocks 5, and on two cushion blocks 5, respectively add a pad 4 that 0.125mm is thick, produce the vertical displacement of 0.125 ÷ 0.7=0.1786mm, but there is no Horizontal displacement.
The vertical bearing 0.25mm that improves: place two cushion blocks 5 in two mounting groove 1-5 that are arranged at bottom half-bearing watt body 1-2, and all increase by 0.7 * 0.25=0.175mm pad 4.
Bearing 0.25mm moves right: in two mounting groove 1-5 that are arranged at bottom half-bearing watt body 1-2, place two cushion blocks 5 and two pads 4, and the cushion block 4 that these two cushion blocks 5 are positioned to right side deducts 0.7 * 0.25=0.175mm pad 4, and the cushion block 5 thickening 0.175mm pads 4 of on the left side.
Disalignment collar gap is different.
Claims (3)
1. a part radian circular journal bearing for steam turbine, is characterized in that: described steam turbine comprises bearing liner body (1), bearing stop pin (2), thermocouple (3), oil nozzle (7), three pads (4), three cushion blocks (5) and two locating studs (6) with part radian circular journal bearing;
Bearing liner body (1) comprises first bearing liner body (1-1) and the bottom half-bearing watt body (1-2) from its horizontal flange (1-4) cutting, first bearing liner body (1-1) and bottom half-bearing watt body (1-2) are by two locating studs (6) location centering, first bearing liner body (1-1) and bottom half-bearing watt body (1-2) removably connect, the outer ring surface (1-3) of bearing liner body (1) is sphere, the upper close horizontal flange (1-4) of outer ring surface (1-3) of bearing liner body (1) locates to be radially processed with a pin-and-hole, and described pin-and-hole is arranged on bottom half-bearing watt body (1-2), one end of bearing stop pin (2) is fixed in pin-and-hole, the upper thickness direction along bearing liner body (1) of outer ring surface (1-3) of bearing liner body (1) is processed with three mounting grooves (1-5), one of them mounting groove (1-5) of three mounting grooves (1-5) is arranged on the top of first bearing liner body (1-1), another two mounting grooves (1-5) in three mounting grooves (1-5) are arranged on bottom half-bearing watt body (1-2), and the angle α between each mounting groove (1-5) in these another two mounting grooves (1-5) and the vertical center line M of bearing liner body (1) is 45 °, a mounting groove (1-5) in these another two mounting grooves (1-5) communicates with the inner chamber of bearing liner body (1) by the first oil inlet hole (1-6), along bearing liner body (1) in the groove bottom of another mounting groove (1-5) in these another two mounting grooves (1-5), be radially processed with a mounting hole communicating with the inner chamber of bearing liner body (1), a pad (4) and a cushion block (5) are installed in each mounting groove (1-5) in three mounting grooves (1-5) from the inside to the outside, the outer surface of cushion block (5) is the sphere concentric with bearing liner body (1), on the pad (4) corresponding with the first oil inlet hole (1-6) and cushion block (5), be processed with the filler opening (1-7) communicating with the first oil inlet hole (1-6), thermocouple (3) is arranged in mounting hole, the bottom of bottom half-bearing watt body (1-2) is processed with radial direction through hole, oil nozzle (7) is arranged in radial direction through hole, along bearing liner body (1) on the inwall of first bearing liner body (1-1), be radially processed with the second oil inlet hole (1-8), angle β between the center line of the second oil inlet hole (1-8) and the vertical center line M of bearing liner body (1) is 45 °, the second oil inlet hole (1-8) communicates with the first oil inlet hole (1-6) by the oil transportation channel (1-9) being arranged in bearing liner body (1), the middle part of the inner ring surface of bearing liner body (1) is processed with the middle oil storage tank (1-10) of eccentric circle arc, the second oil inlet hole (1-8) communicates with oil storage tank (1-10) in the middle of described eccentric circle arc, on the inner ring surface of bearing liner body (1), be processed with two annular drain pans (1-11) and two eccentric circle arc side oil storage tanks (1-12), two annular drain pans (1-11) are symmetrical arranged with respect to the vertical center line M of bearing liner body (1), two eccentric circle arc side oil storage tanks (1-12) are symmetrical arranged the both sides end face setting of also close bearing liner body (1) with respect to the vertical center line M of bearing liner body (1), two eccentric circle arc side oil storage tanks (1-12) are set up in parallel with the middle oil storage tank of eccentric circle arc (1-10), the two ends of the middle oil storage tank of eccentric circle arc (1-10) and the two ends of two eccentric circle arc side oil storage tanks (1-12) are all arranged on bottom half-bearing watt body (1-2) and go up and be positioned on the inner ring surface of bearing liner body (1), the middle part that the inner ring surface of bearing liner body (1) is positioned at bottom half-bearing watt body (1-2) is supporting region (1-14), the central angle γ of supporting region (1-14) is 120 °.
2. part radian circular journal bearing for a kind of steam turbine according to claim 1, is characterized in that: the inner ring surface of described bearing liner body (1) is provided with bearing alloy layer (1-13).
3. according to part radian circular journal bearing for a kind of steam turbine described in claim 1 or 2, it is characterized in that: described bearing liner body (1) is cast steel bearing liner body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210166433.5A CN102691724B (en) | 2012-05-25 | 2012-05-25 | Circular bearing with part of radian for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210166433.5A CN102691724B (en) | 2012-05-25 | 2012-05-25 | Circular bearing with part of radian for steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102691724A CN102691724A (en) | 2012-09-26 |
| CN102691724B true CN102691724B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210166433.5A Active CN102691724B (en) | 2012-05-25 | 2012-05-25 | Circular bearing with part of radian for steam turbine |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295599A (en) * | 2014-10-23 | 2015-01-21 | 无锡明珠钢球有限公司 | Knuckle bearing connecting rod |
| CN107830067A (en) * | 2017-12-06 | 2018-03-23 | 中国船舶重工集团公司第七0三研究所 | A kind of steam turbine radial journal bearing temperature measurement structure |
| CN113446307A (en) * | 2021-06-18 | 2021-09-28 | 东方电气集团东方汽轮机有限公司 | Radial sliding bearing with lower bush having partial circumferential groove |
| CN114233752A (en) * | 2021-12-07 | 2022-03-25 | 昆山旭义富机械设备有限公司 | Pass loose copper sheathing for electricity wheel convenient to take out |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376389A (en) * | 1979-11-26 | 1983-03-15 | Hitachi, Ltd. | Method of diagnosis of operating conditions of bearing and apparatus therefor |
| JP3637187B2 (en) * | 1997-10-20 | 2005-04-13 | 三菱重工業株式会社 | Journal bearing |
| CN201661605U (en) * | 2010-03-30 | 2010-12-01 | 上海申科滑动轴承有限公司 | Lubricant circuit of tilting pad sliding bearing |
| CN202560818U (en) * | 2012-05-25 | 2012-11-28 | 哈尔滨汽轮机厂有限责任公司 | Circular bearing with partial radian for steam turbine |
-
2012
- 2012-05-25 CN CN201210166433.5A patent/CN102691724B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376389A (en) * | 1979-11-26 | 1983-03-15 | Hitachi, Ltd. | Method of diagnosis of operating conditions of bearing and apparatus therefor |
| JP3637187B2 (en) * | 1997-10-20 | 2005-04-13 | 三菱重工業株式会社 | Journal bearing |
| CN201661605U (en) * | 2010-03-30 | 2010-12-01 | 上海申科滑动轴承有限公司 | Lubricant circuit of tilting pad sliding bearing |
| CN202560818U (en) * | 2012-05-25 | 2012-11-28 | 哈尔滨汽轮机厂有限责任公司 | Circular bearing with partial radian for steam turbine |
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| CN102691724A (en) | 2012-09-26 |
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Effective date of registration: 20221223 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Patentee after: HARBIN TURBINE Co.,Ltd. Patentee after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Patentee before: HARBIN TURBINE Co.,Ltd. |
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