CN202560818U - Circular bearing with partial radian for steam turbine - Google Patents
Circular bearing with partial radian for steam turbine Download PDFInfo
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- CN202560818U CN202560818U CN2012202403003U CN201220240300U CN202560818U CN 202560818 U CN202560818 U CN 202560818U CN 2012202403003 U CN2012202403003 U CN 2012202403003U CN 201220240300 U CN201220240300 U CN 201220240300U CN 202560818 U CN202560818 U CN 202560818U
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- bearing liner
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Abstract
The utility model discloses a circular bearing with partial radian for a steam turbine, relates to a bearing for a steam turbine, and aims to solve problems that circular bearings used in existing steam turbines are high in bearing bush temperature and oil return temperature and low in bearing capacity, and long-time reliable and stable operation of the steam turbine generator units at a high rotate speed and under a heavy load cannot be satisfied. According to the circular bearing, upper half and lower half bearing bushes are located in a locating pin, spacers and cushion blocks are mounted in mounting grooves of the bearing bushes, a second oil inlet on the upper half bearing bush is communicated with a first oil inlet arranged on the lower half bearing bush through an oil channel, eccentric arc-shaped intermediate oil storage grooves are processed in the middles on the inner circular surfaces of the bearing bushes, second oil inlets are communicated with the eccentric circular intermediate oil storage grooves, and arc-shaped oil discharge grooves and eccentric arc-shaped side oil storage grooves are processed on the inner circular surfaces of the bearing bushes. The circular bearing is applied to steam turbine generator units, and the long-time reliable stable operation of the steam turbine generator units at a high rotate speed and under a heavy load can be achieved.
Description
Technical field
The utility model relates to a kind of steam turbine and uses bearing.
Background technique
Along with the power station steam turbine capacity increases, the corresponding increasing of the physical dimension of turbine rotor, its weight also strengthens thereupon.There are 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, can't satisfy Turbo-generator Set under high rotating speed, big loading condiction, realizes unit smooth running stably in a long term.
The model utility content
The purpose of the utility model provides a kind of steam turbine with part radian circular journal bearing; There is the bearing bush temperature height in the circular journal bearing that has the Turbo-generator Set use now, returning-oil temperature is high, bearing capacity is little to solve; Can't satisfy Turbo-generator Set under high rotating speed, big loading condiction, realize the problem of unit smooth running stably in a long term.
The utility model is to address the above problem the technological scheme of taking to be:
Steam turbine is with part radian circular journal bearing, and said 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;
The 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 through two locating stud location centerings; A first bearing liner body and a bottom half-bearing watt body removably connect; The outer ring surface of bearing liner body is a sphere; Radially be processed with a pin-and-hole near the horizontal flange place on the outer ring surface of bearing liner body, and said pin-and-hole is arranged on the bottom half-bearing watt body, an end of bearing stop pin is fixed in the pin-and-hole; The thickness direction of the outer ring surface upper edge bearing liner body 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, and two mounting grooves in addition in three mounting grooves are arranged on the bottom half-bearing watt body, and should be in addition angle between the vertical center line M of each mounting groove and bearing liner body in two mounting grooves be 45 °; A mounting groove that is somebody's turn to do in other two mounting grooves communicates through the inner chamber of first oil inlet hole with the bearing liner body; Should be in addition in two mounting grooves another mounting groove groove bottom upper edge bearing liner body radially be processed with a mounting hole that communicates with the inner chamber of bearing liner body, in each mounting groove in three mounting grooves a pad and a cushion block are installed from the inside to the outside, the outer surface of cushion block is and the body concentric sphere of bearing liner; Be processed with the filler opening that communicates with first oil inlet hole on corresponding pad of first oil inlet hole and the cushion block; Thermocouple is installed in the mounting hole, and the bottom of bottom half-bearing watt body is processed with radial direction through hole, and oil nozzle is installed in the radial direction through hole; The inwall upper edge bearing liner body of first bearing liner body radially be processed with second oil inlet hole; Angle β between the vertical center line M of the center line of second oil inlet hole and bearing liner body is 45 °, and second oil inlet hole communicates with first oil inlet hole through the oil transportation channel that is arranged in the bearing liner body, and the middle part of the inner ring surface of bearing liner body is processed with the middle oil storage tank of eccentric circle arc; Second oil inlet hole communicates with the middle oil storage tank of said eccentric circle arc; Be processed with two annular drain pans and two eccentric circle arc side oil storage tanks on the inner ring surface of bearing liner body, two annular drain pans are symmetrical set with respect to the vertical center line M of bearing liner body, and two eccentric circle arc side oil storage tanks are symmetrical set with respect to the vertical center line M of bearing liner body and near the both sides end face setting of bearing liner body; Oil storage tank is set up in parallel in the middle of two eccentric circle arc side oil storage tanks and the eccentric circle arc; The two ends of the middle oil storage tank of eccentric circle arc and the two ends of two eccentric circle arc side oil storage tanks all are arranged on the bottom half-bearing watt body and are positioned on the inner ring surface of bearing liner body, and the middle part that the inner ring surface of bearing liner body is positioned at bottom half-bearing watt body is a supporting region, and the central angle γ of supporting region is 120 °.
The beneficial effect of the utility model is: the utlity model has function lubricated and that the bearing centre position is radially adjusted; And can reduce bearing bush temperature and returning-oil temperature; Improved bearing capacity; Can satisfy Turbo-generator Set under high rotating speed, big loading condiction, realize unit smooth running stably in a long term.The utility model 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, make bearing can bear big load, has satisfied the unit operation requirement.
Description of drawings
Fig. 1 is the overall structure plan view of the utility model; 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 that the X of Fig. 3 is to view; Fig. 5 is the plan view of bearing liner body; Fig. 6 is the A-A sectional view of Fig. 5, is positioned among the figure that direction is the sense of rotation of bearing shown in the arrow of first bearing liner body hatching; 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: combine Fig. 1-Figure 10 explanation; The steam turbine of this mode of execution is with part radian circular journal bearing, and said 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 this mode of execution are processed by steel material.
Embodiment two: combine Fig. 8 and Fig. 9 explanation, the inner ring surface of the said bearing liner body 1 of this mode of execution is provided with bearing alloy layer 1-13.Wear-resistant, as to have improved bearing working life.Other is identical with embodiment one.
Embodiment three: combine Fig. 2, Fig. 3 and Fig. 8 explanation, the said bearing liner body 1 of this mode of execution is a cast steel bearing liner body.Other is identical with embodiment one or two.
Working procedure: oil gets into 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 get in the middle of the eccentric circle arc in oil storage tank 1-10 and two the eccentric circle arc side oil storage tank 1-12 through the second oil inlet hole 1-8; Oil is lubricated bearing inside through the inner ring surface of bearing liner body 1 again; Discharge from two annular drain pan 1-11 and bearing face at last, this layout has guaranteed all the time the lubricated axle journal of fuel feeding reliably.
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; Two mounting groove 1-5 in addition among three mounting groove 1-5 are arranged on the bottom half-bearing watt body 1-2; And should be in addition angle between the vertical center line M of each mounting groove 1-5 and bearing liner body 1 among two mounting groove 1-5 be 45 °, so have one 0.7 constant relation [be level, vertical displacement equal (thickness/2) extract square root] 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 do not have Horizontal displacement.
The vertical bearing 0.25mm that improves: in two mounting groove 1-5 that are arranged at bottom half-bearing watt body 1-2, place two cushion blocks 5, 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 at the 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 crack is different.
Claims (3)
1. a steam turbine is characterized in that with part radian circular journal bearing: said 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 through 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 a sphere; The outer ring surface (1-3) of bearing liner body (1) is gone up and is located radially to be processed with a pin-and-hole near horizontal flange (1-4); And said pin-and-hole is arranged on the bottom half-bearing watt body (1-2); One end of bearing stop pin (2) is fixed in the pin-and-hole, and the thickness direction of outer ring surface (1-3) the upper edge bearing liner body (1) of bearing liner body (1) is processed with three mounting grooves (1-5), and 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); Two mounting grooves (1-5) in addition in three mounting grooves (1-5) are arranged on the bottom half-bearing watt body (1-2); And in addition the angle between the vertical center line M of each mounting groove (1-5) in two mounting grooves (1-5) and bearing liner body (1) is 45 °, and the mounting groove (1-5) in two mounting grooves (1-5) communicates through the inner chamber of first oil inlet hole (1-6) with bearing liner body (1) in addition, be somebody's turn to do another mounting groove (1-5) in other two mounting grooves (1-5) groove bottom upper edge bearing liner body (1) radially be processed with a mounting hole that communicates 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 and the concentric sphere of bearing liner body (1), and is processed with the filler opening (1-7) that communicates with first oil inlet hole (1-6) on corresponding pad of first oil inlet hole (1-6) (4) and the cushion block (5), and thermocouple (3) is installed in the mounting hole; The bottom of bottom half-bearing watt body (1-2) is processed with radial direction through hole; Oil nozzle (7) is installed in the radial direction through hole, the inwall upper edge bearing liner body (1) of first bearing liner body (1-1) radially be processed with second oil inlet hole (1-8), the angle β between the vertical center line M of the center line of second oil inlet hole (1-8) and bearing liner body (1) is 45 °; Second oil inlet hole (1-8) communicates with first oil inlet hole (1-6) through the oil transportation channel (1-9) that is arranged in the 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, and second oil inlet hole (1-8) communicates with the middle oil storage tank of said eccentric circle arc (1-10), is processed with two annular drain pans (1-11) and two eccentric circle arc side oil storage tanks (1-12) on the inner ring surface of bearing liner body (1); Two annular drain pans (1-11) are symmetrical set 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 set with respect to the vertical center line M of bearing liner body (1) and are provided with near the both sides end face of bearing liner body (1), and oil storage tank (1-10) is set up in parallel in the middle of two eccentric circle arc side oil storage tanks (1-12) and the eccentric circle arc, and the two ends of the two ends of oil storage tank (1-10) and two eccentric circle arc side oil storage tanks (1-12) all are 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) in the middle of the eccentric circle arc; 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), and the central angle γ of supporting region (1-14) is 120 °.
According to the said a kind of steam turbine of claim 1 with part radian circular journal bearing, it is characterized in that: the inner ring surface of said bearing liner body (1) is provided with bearing alloy layer (1-13).
According to claim 1 or 2 said a kind of steam turbine with part radian circular journal bearing, it is characterized in that: said bearing liner body (1) is a cast steel bearing liner body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202403003U CN202560818U (en) | 2012-05-25 | 2012-05-25 | Circular bearing with partial radian for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202403003U CN202560818U (en) | 2012-05-25 | 2012-05-25 | Circular bearing with partial radian for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560818U true CN202560818U (en) | 2012-11-28 |
Family
ID=47210478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202403003U Withdrawn - After Issue CN202560818U (en) | 2012-05-25 | 2012-05-25 | Circular bearing with partial radian for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560818U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691724A (en) * | 2012-05-25 | 2012-09-26 | 哈尔滨汽轮机厂有限责任公司 | Circular bearing with part of radian for steam turbine |
| 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 |
| CN108757726A (en) * | 2018-06-19 | 2018-11-06 | 中车大连机车研究所有限公司 | Center of gravity self-adjusting bush(ing) bearing |
-
2012
- 2012-05-25 CN CN2012202403003U patent/CN202560818U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691724A (en) * | 2012-05-25 | 2012-09-26 | 哈尔滨汽轮机厂有限责任公司 | Circular bearing with part of radian for steam turbine |
| CN102691724B (en) * | 2012-05-25 | 2014-03-26 | 哈尔滨汽轮机厂有限责任公司 | Circular bearing with part of radian for steam turbine |
| 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 |
| CN104314997B (en) * | 2014-08-19 | 2019-01-15 | 中广核工程有限公司 | Bearing shell slant detection method and automatic inclination correction method |
| CN108757726A (en) * | 2018-06-19 | 2018-11-06 | 中车大连机车研究所有限公司 | Center of gravity self-adjusting bush(ing) bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121128 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121128 Effective date of abandoning: 20140326 |