CN105134800A - Assembly method for tilt pad bearing of steam turbine - Google Patents
Assembly method for tilt pad bearing of steam turbine Download PDFInfo
- Publication number
- CN105134800A CN105134800A CN201510489856.4A CN201510489856A CN105134800A CN 105134800 A CN105134800 A CN 105134800A CN 201510489856 A CN201510489856 A CN 201510489856A CN 105134800 A CN105134800 A CN 105134800A
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- China
- Prior art keywords
- cushion block
- anchor
- adjustment cushion
- bearing housing
- bearing
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Abstract
The invention discloses an assembly method for a tilt pad bearing of a steam turbine, and relates to a bearing assembly method. The assembly method aims to solve the problems that thickness of a bearing alloy layer is not uniform after pad internal turning, and the processing state and the using state of the pad are inconsistent while a temporary bolt is used to position the pad during assembling of a current tilt pad bearing. The assembly method comprises the following steps: reserving allowance for four regulating cushion blocks on the basis of a design thickness; respectively calculating turning capability of the four regulating cushion blocks; respectively calculating assembly thickness of the four regulating cushion blocks; respectively turning the four regulating cushion blocks; and assembling the tilt pad bearing by use of the turned four regulating cushion blocks. The assembly method is used for assembling the tilt pad bearing of the steam turbine.
Description
Technical field
The present invention relates to a kind of bearing assemble method, particularly a kind of steam turbine can the assembly method of hectare pad bearing.
Background technique
Along with steam turbine is day by day to high speed, powerful future development, have high stability can the application of hectare pad bearing more and more extensive.Can mainly comprise bearing housing, tile fragment, adjustment cushion block, anchor and spring by hectare pad bearing, bearing housing comprises upper bearing (metal) housing and lower bearing housing, and tile fragment endoporus is cast with bearing alloy layer.
Traditional can the assembling of hectare pad bearing, machining allowance need be reserved before assembly to tile fragment hole size, and tile fragment remaining part size and can the size of other assembly of hectare pad bearing processing all by drawing, each assembly is assembled by drawing during assembling, finally adopt bolt that tile fragment is tightened to correct position, reface tile fragment endoporus makes it reach drawing requirement.There is following shortcoming in this assembly method: 1) tile fragment is strained by two bolt, if the tightening force of two bolt is inconsistent, or the position degree inaccuracy of the screw matched with bolt on bearing housing and tile fragment, will cause the in uneven thickness of tile fragment endoporus turning rear bearing alloy-layer; 2) can bolt need be removed when being installed on unit by a hectare pad bearing, and use plug screw to seal screw to prevent leakage of oil, therefore, if tile fragment is not tightened to correct position by bolt during turning tile fragment endoporus, just can cause the machining state of tile fragment and using state inconsistent, finally affect quality of product.
Summary of the invention
The present invention existingly can use bolt location tile fragment during the assembling of hectare pad bearing to solve, easily cause the in uneven thickness of tile fragment endoporus turning rear bearing alloy-layer, and the machining state of tile fragment and the inconsistent problem of using state, and then a kind of steam turbine is proposed can the assembly method of hectare pad bearing.
The present invention in order to solve the problems of the technologies described above the technological scheme taked is:
The present invention includes following steps:
Step one, to process first bearing housing, bottom half-bearing housing, four tile fragments, four anchors, four adjustment cushion block, four anchor draw-in grooves and four grooves according to designing requirement, and ensure that four adjustment cushion blocks reserve machining allowance on the basis of design thickness;
The Lathe quantity of step 2, respectively calculating four adjustment cushion blocks, concrete calculation procedure is;
(1), the internal bore radius R1 of calculation bearing housing; The opening end of first bearing housing aimed at the opening end of bottom half-bearing housing and fixes with bolt, measuring the diameter of bearing housing endoporus with internal micrometer, then obtain the internal bore radius R1 of bearing housing;
(2), label; Difference label on four tile fragments, four anchors, four adjustment cushion blocks and four anchor draw-in grooves, the tile fragment of identical label, anchor, adjustment cushion block and anchor draw-in groove being compiled is one group;
(3), depth gauge is used to measure the degree of depth D of four anchor draw-in grooves respectively
i, i=1,2,3,4;
(4), the perpendicular distance A of four anchor draw-in groove bottom surfaces to the bearing housing center of circle is calculated respectively
i, A
i=R1+D
i, i=1,2,3,4;
(5), the tile fragment of same group, anchor and adjustment cushion block are assembled; Adjustment cushion block and anchor are arranged in the groove of tile fragment outer surface one by one, adjustment cushion block, anchor and groove is coaxial, the circular-arc bottom face of anchor contact with adjustment cushion block, and after assembling, use outside micrometer to measure in every group anchor end face to the perpendicular distance B of tile fragment internal face
i, i=1,2,3,4;
(6) anchor end face, is calculated in every group respectively to the perpendicular distance C in the tile fragment center of circle
i, C
i=R+B
i, i=1,2,3,4, wherein R is the design radial of tile fragment inner ring;
(7) the Lathe quantity X of four adjustment cushion blocks, is calculated respectively
i, X
i=C
i-A
i, i=1,2,3,4;
The assembling thickness Y of step 3, respectively calculating four adjustment cushion blocks
i, Y
ioriginal thickness-the X of=adjustment cushion block
i, i=1,2,3,4;
Step 4, respectively turning four adjustment cushion block; By the original thickness difference turning of four adjustment cushion blocks to assembling thickness Y
i;
Step 5, use packaged the joining of four spacers after turning can hectare pad bearing;
(1), the opening end of first bearing housing aimed at the opening end of bottom half-bearing housing and be bolted together;
(2), by the adjustment cushion block after the tile fragment of same group, anchor and turning according to step 2 (five) step described in assemble;
(3), two springs are inserted in two spring card slots of first bearing housing respectively;
(4), by the entirety of assembling in (two) be connected with the anchor draw-in groove of same group, the top of anchor is inserted in anchor draw-in groove.
The invention has the beneficial effects as follows: the use that present invention, avoiding bolt, by reserving machining allowance to the thickness of adjustment cushion block before assembly, the Lathe quantity of adjustment cushion block is drawn again through theory calculate, assembled by turning adjustment cushion block, whole assembly process avoids the turning to tile fragment endoporus, ensure that the consistency of thickness of bearing alloy layer, also ensure that the machining state of tile fragment is consistent with using state simultaneously.
Accompanying drawing explanation
Fig. 1 is the assembling front view before the turning of adjustment cushion block; Fig. 2 is can the plan view of hectare pad bearing.
Embodiment
Embodiment one: composition graphs 1 and Fig. 2 illustrate present embodiment, the steam turbine of present embodiment can the assembly method of hectare pad bearing comprise the following steps:
Step one, to process first bearing housing 11, bottom half-bearing housing 22, four tile fragments 33, four anchors 44, four adjustment cushion block 55, four anchor draw-in grooves and four grooves according to designing requirement, and ensure that four adjustment cushion blocks 55 reserve machining allowance on the basis of design thickness;
The Lathe quantity of step 2, respectively calculating four adjustment cushion blocks 55, concrete calculation procedure is;
(1), the internal bore radius R1 of calculation bearing housing; The opening end of first bearing housing 11 aimed at the opening end of bottom half-bearing housing 22 and fixes with bolt, measuring the diameter of bearing housing endoporus with internal micrometer, then obtain the internal bore radius R1 of bearing housing;
(2), label; Difference label on four tile fragments, 33, four anchors 44, four adjustment cushion block 55 and four anchor draw-in grooves, the tile fragment of identical label, anchor, adjustment cushion block and anchor draw-in groove being compiled is one group;
(3), depth gauge is used to measure the degree of depth D of four anchor draw-in grooves respectively
i, i=1,2,3,4;
(4), the perpendicular distance A of four anchor draw-in groove bottom surfaces to the bearing housing center of circle is calculated respectively
i, A
i=R1+D
i, i=1,2,3,4;
(5), the tile fragment 33 of same group, anchor 44 and adjustment cushion block 55 are assembled; Adjustment cushion block 55 and anchor 44 are arranged in the groove of tile fragment 33 outer surface one by one, adjustment cushion block 55, anchor 44 and groove is coaxial, the circular-arc bottom face of anchor 44 contacts with adjustment cushion block 55, uses outside micrometer to measure in every group anchor 44 end face to the perpendicular distance B of tile fragment 33 internal face after assembling
i, i=1,2,3,4;
(6) anchor 44 end face, is calculated in every group respectively to the perpendicular distance C in tile fragment 33 center of circle
i, C
i=R+B
i, i=1,2,3,4, wherein R is the design radial of tile fragment 33 inner ring;
(7) the Lathe quantity X of four adjustment cushion blocks 55, is calculated respectively
i, X
i=C
i-A
i, i=1,2,3,4;
The assembling thickness Y of step 3, respectively calculating four adjustment cushion blocks 55
i, Y
ioriginal thickness-the X of=adjustment cushion block
i, i=1,2,3,4;
Step 4, respectively turning four adjustment cushion block 55; By the original thickness difference turning of four adjustment cushion blocks 55 to assembling thickness Y
i;
Step 5, using four after turning adjustment cushion blocks 55 to assemble can hectare pad bearing;
(1), the opening end of first bearing housing 11 aimed at the opening end of bottom half-bearing housing 22 and be bolted together;
(2), by the adjustment cushion block 55 after the tile fragment 33 of same group, anchor 44 and turning according to step 2 (five) step described in assemble;
(3), two springs 66 are inserted in two spring card slots of first bearing housing 11 respectively;
(4), by the entirety of assembling in (two) be connected with the anchor draw-in groove of same group, the top of anchor 44 is inserted in anchor draw-in groove.
Embodiment two: composition graphs 1 illustrates present embodiment, in step one, the machining allowance of four adjustment cushion blocks 55 is 1mm.Other step is identical with embodiment one.
Embodiment three: composition graphs 2 illustrates present embodiment, after assembling as described in (four) step of step 5, adopt eight screws 77 first bearing housing 11 and bottom half-bearing housing 22 and four tile fragments 33 to be fixed, each screw 77 is screwed in the bearing housing screw corresponding with tile fragment 33.Assembling like this can not be scattered in transportation process by hectare pad bearing to ensure, before a hectare pad bearing is assembled to unit, can be removed by eight screws, and blocked by eight screws with eight plug screws.Other step is identical with embodiment one or two.
Claims (3)
1. steam turbine can the assembly method of hectare pad bearing, and described steam turbine can the assembly method of hectare pad bearing comprise the following steps:
Step one, to process first bearing housing (11), bottom half-bearing housing (22), four tile fragments (33), four anchors (44), four adjustment cushion block (55), four anchor draw-in grooves and four grooves according to designing requirement, and ensure that four adjustment cushion block (55) reserve machining allowance on the basis of design thickness;
The Lathe quantity of step 2, calculating four adjustment cushion block (55) respectively, concrete calculation procedure is;
(1), the internal bore radius R1 of calculation bearing housing; The opening end of the opening end of first bearing housing (11) with bottom half-bearing housing (22) is aimed at and fixed with bolt, measures the diameter of bearing housing endoporus with internal micrometer, then obtain the internal bore radius R1 of bearing housing;
(2), label; Difference label on four tile fragments (33), four anchors (44), four adjustment cushion block (55) and four anchor draw-in grooves, the tile fragment of identical label, anchor, adjustment cushion block and anchor draw-in groove being compiled is one group;
(3), depth gauge is used to measure the degree of depth D of four anchor draw-in grooves respectively
i, i=1,2,3,4;
(4), the perpendicular distance A of four anchor draw-in groove bottom surfaces to the bearing housing center of circle is calculated respectively
i, A
i=R1+D
i, i=1,2,3,4;
(5), by the tile fragment (33) of same group, anchor (44) and adjustment cushion block (55) assembling; Cushion block (55) will be adjusted and anchor (44) is arranged in the groove of tile fragment (33) outer surface one by one, adjustment cushion block (55), anchor (44) and groove are coaxial, the circular-arc bottom face of anchor (44) contact with adjustment cushion block (55), and after assembling, use outside micrometer to measure in every group anchor (44) end face to the perpendicular distance B of tile fragment (33) internal face
i, i=1,2,3,4;
(6) anchor (44) end face, is calculated in every group respectively to the perpendicular distance C in tile fragment (33) center of circle
i, C
i=R+B
i, i=1,2,3,4, wherein R is the design radial of tile fragment (33) inner ring;
(7) the Lathe quantity X of four adjustment cushion block (55), is calculated respectively
i, X
i=C
i-A
i, i=1,2,3,4;
The assembling thickness Y of step 3, calculating four adjustment cushion block (55) respectively
i, Y
ioriginal thickness-the X of=adjustment cushion block
i, i=1,2,3,4;
Step 4, respectively turning four adjustment cushion block (55); By the turning of the original thickness of four adjustment cushion block (55) difference to assembling thickness Y
i;
Step 5, use four after turning adjustment cushion block (55) assemblings can hectare pad bearing;
(1), the opening end of the opening end of first bearing housing (11) with bottom half-bearing housing (22) is aimed at and be bolted together;
(2), by the adjustment cushion block (55) after the tile fragment (33) of same group, anchor (44) and turning according to step 2 (five) step described in assemble;
(3), two springs (66) are inserted in two spring card slots of first bearing housing (11) respectively;
(4), by the entirety of assembling in (two) be connected with the anchor draw-in groove of same group, the top of anchor (44) is inserted in anchor draw-in groove.
2. steam turbine can the assembly method of hectare pad bearing according to claim 1, and it is characterized in that, in step one, the machining allowances of four adjustment cushion block (55) are 1mm.
3. according to claim 1 or 2, steam turbine can the assembly method of hectare pad bearing, it is characterized in that, after assembling as described in (four) step of step 5, adopt eight screws (77) first bearing housing (11) and bottom half-bearing housing (22) to be fixed with four tile fragments (33), each screw (77) is screwed in the bearing housing screw corresponding with tile fragment (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489856.4A CN105134800A (en) | 2015-08-11 | 2015-08-11 | Assembly method for tilt pad bearing of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489856.4A CN105134800A (en) | 2015-08-11 | 2015-08-11 | Assembly method for tilt pad bearing of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105134800A true CN105134800A (en) | 2015-12-09 |
Family
ID=54720293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510489856.4A Pending CN105134800A (en) | 2015-08-11 | 2015-08-11 | Assembly method for tilt pad bearing of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105134800A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239150A (en) * | 2016-09-30 | 2016-12-21 | 常州信息职业技术学院 | A kind of inner tube and the assembling special plane of middle pipe |
| CN109154207A (en) * | 2016-04-18 | 2019-01-04 | 曼能源解决方案欧洲股份公司 | Turbine cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002089552A (en) * | 2000-09-18 | 2002-03-27 | Kawasaki Heavy Ind Ltd | Spherical bearing and its assembling method |
| CN101363475A (en) * | 2008-09-25 | 2009-02-11 | 浙江省诸暨申发轴瓦有限公司 | Bearing cooling cycle structure |
| CN101981333A (en) * | 2008-11-12 | 2011-02-23 | 三菱重工业株式会社 | Journal bearing |
| CN102322476A (en) * | 2011-09-19 | 2012-01-18 | 重庆大学 | Tilting-pad water-lubricated rubber alloy bearing |
| CN102619876A (en) * | 2012-03-26 | 2012-08-01 | 哈尔滨汽轮机厂有限责任公司 | Tilting pad bearing with groove on upper bush and spring on bush back |
-
2015
- 2015-08-11 CN CN201510489856.4A patent/CN105134800A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002089552A (en) * | 2000-09-18 | 2002-03-27 | Kawasaki Heavy Ind Ltd | Spherical bearing and its assembling method |
| CN101363475A (en) * | 2008-09-25 | 2009-02-11 | 浙江省诸暨申发轴瓦有限公司 | Bearing cooling cycle structure |
| CN101981333A (en) * | 2008-11-12 | 2011-02-23 | 三菱重工业株式会社 | Journal bearing |
| CN102322476A (en) * | 2011-09-19 | 2012-01-18 | 重庆大学 | Tilting-pad water-lubricated rubber alloy bearing |
| CN102619876A (en) * | 2012-03-26 | 2012-08-01 | 哈尔滨汽轮机厂有限责任公司 | Tilting pad bearing with groove on upper bush and spring on bush back |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109154207A (en) * | 2016-04-18 | 2019-01-04 | 曼能源解决方案欧洲股份公司 | Turbine cylinder |
| CN106239150A (en) * | 2016-09-30 | 2016-12-21 | 常州信息职业技术学院 | A kind of inner tube and the assembling special plane of middle pipe |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151209 |