CN104033194B - A kind of duplex pull rod self-lubricating balance type rotating dividing plate - Google Patents
A kind of duplex pull rod self-lubricating balance type rotating dividing plate Download PDFInfo
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- CN104033194B CN104033194B CN201410215541.6A CN201410215541A CN104033194B CN 104033194 B CN104033194 B CN 104033194B CN 201410215541 A CN201410215541 A CN 201410215541A CN 104033194 B CN104033194 B CN 104033194B
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- swivel becket
- partition body
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- balance cylinder
- dividing plate
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- 238000005192 partition Methods 0.000 claims abstract description 38
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 238000005461 lubrication Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The present invention relates to steam turbine field, especially a kind of use controls to take out filling use on filling steam turbine, and the duplex pull rod self-lubricating balance type rotating dividing plate of bite phenomenon is less likely to occur, it includes partition body, swivel becket, vapour balance cylinder cover ring, regulation connecting rod and labyrinth casing, this duplex pull rod self-lubricating balance type rotating dividing plate, it drives regulation connecting rod to control swivel becket regulation flow area by servomotor and adjusts extraction pressure and flow, have crushing low, effective.Owing to have employed the DEVA alloy block of self-lubricating between swivel becket and partition body, when the low-friction coefficient of self-lubricating material makes swivel becket rotate, frictional force reduces, and the self-reparing capability of alloy block makes alloy block form excellent sealing with swivel becket.First balance cylinder, front end of swivel becket communicates with after level, and second balance cylinder at swivel becket rear portion is connected with before level, so makes the pressure reduction of swivel becket both sides be substantially reduced, and when swivel becket rotates, frictional force reduces further, rotates the most flexible.
Description
Technical field
The present invention relates to steam turbine field, especially a kind of duplex pull rod self-lubricating balance type rotating dividing plate.
Background technology
Domestic 50MW is adjustable, and the series unit that draws gas mostly uses and arranges the regulation that rotating barrier realizes drawing gas in unit flow passage component, and rotating barrier is the extraction for heat supply distinctive structure of formula steam turbine, and the advantage of rotating barrier is that cylinder structure is simple, and rotor length shortens；Shortcoming is that structure is complicated, and the structure of rotating barrier flow passage component is more much more complex than extraction control valve, rotating barrier both sides pressure reduction is the biggest when, easy bite, causes regulation connecting rod cracking, reduces the security reliability of unit.
Summary of the invention
The invention aims to solve the deficiency of above-mentioned technology and provide a kind of use take out adjustable or control on filling steam turbine to take out filling use, and the duplex pull rod self-lubricating balance type rotating dividing plate of bite phenomenon is less likely to occur.
In order to achieve the above object, duplex pull rod self-lubricating balance type rotating dividing plate designed by the present invention, it includes partition body, swivel becket, vapour balance cylinder cover ring, regulation connecting rod and labyrinth casing, and described partition body is divided into upper and lower two semicircular structure, is removably connected by bolt；Partition body has a circular passage along a circumference, circular passage inner peripheral surface offers the first vapour leaf joint groove, in the first vapour leaf joint groove, the first leaf grating is installed, the first described leaf grating is made up of identical the first uniform steam passage window of multiple sizes, is provided with labyrinth casing on the steam output side end face of partition body；Radially have some first balance cylinder's passages at partition body outer shroud, on partition body steam admission side end face, have the first annular groove of twice near the first steam passage window both sides, in first annular groove, be provided with DEVA self-lubrication alloy block；Described swivel becket divides upper and lower two semicircular structure, is removably connected by bolt, and swivel becket is arranged in the circumferential groove of partition body front end, and and partition body between there is angle；Swivel becket offers a circular passage along a circumference, circular passage inner peripheral surface offers the second vapour leaf joint groove, being provided with the second leaf grating in the second vapour leaf joint groove, the second leaf grating is made up of two kinds of second steam passage windows varied in size, the second steam passage window and the first steam passage window one_to_one corresponding；Being provided with twice the second annular groove on swivel becket outer shroud steam output side end face, the second annular groove is corresponding with the first annular groove on partition body, is provided with ring body in the second annular groove；Swivel becket both sides are respectively welded with a handle, and handle is connected with regulation connecting rod；Described regulation connecting rod includes the pull bar of both sides, rod head, main lever, auxiliary lever, and auxiliary lever is connected with servomotor；Described vapour balance cylinder cover ring divides upper and lower cover ring, is fixed by screws on partition body；Vapour balance cylinder cover ring offers some second balance cylinder's passages vertically, corresponding with first balance cylinder's passage, the first balance cylinder making swivel becket anterior is connected with after level, radially offers some 3rd balance cylinder's passages so that second balance cylinder at swivel becket rear portion is connected with before level.
As optimization, the centrage of the first steam passage window and the second steam passage window and dividing plate center are in same plane, and identical with the distance between dividing plate center.
As preferably, described DEVA self-lubrication alloy block is fixed by screws in first annular groove, and described ring body is directly welded in the second annular groove.
As preferably, described labyrinth casing is fixed by screws on the steam output side end face of partition body, is provided with labyrinth strip on labyrinth casing.
Duplex pull rod self-lubricating balance type rotating dividing plate obtained by the present invention, it drives regulation connecting rod to control swivel becket regulation flow area by servomotor and adjusts extraction pressure and flow, have crushing low, effective.Owing to have employed the DEVA alloy block of self-lubricating between swivel becket and partition body, when the low-friction coefficient of self-lubricating material makes swivel becket rotate, frictional force reduces, and the self-reparing capability of alloy block makes alloy block form excellent sealing with swivel becket, and steam loss reduces.First balance cylinder, front end of swivel becket communicates with after level, and second balance cylinder at swivel becket rear portion is connected with before level, so makes the pressure reduction of swivel becket both sides be substantially reduced, and when swivel becket rotates, frictional force reduces further, rotates the most flexible.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 be in Fig. 1 A-A to sectional view；
Fig. 3 be in Fig. 1 B-B to sectional view；
Fig. 4 be in Fig. 1 C-C to sectional view；
When Fig. 5 is passage standard-sized sheet, the relative location drawing of swivel becket and partition body；
Fig. 6 be passage fully closed time, the relative location drawing of swivel becket and partition body.
Detailed description of the invention
The invention will be further described to combine accompanying drawing below by embodiment.
Embodiment 1:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the duplex pull rod self-lubricating balance type rotating dividing plate that the present embodiment describes, it includes partition body 1, swivel becket 2, vapour balance cylinder cover ring 3, regulation connecting rod 4 and labyrinth casing 5, described partition body 1 is divided into upper and lower two semicircular structure, is removably connected by bolt；Partition body 1 has a circular passage along a circumference, circular passage inner peripheral surface offers the first vapour leaf joint groove 6, in the first vapour leaf joint groove 6, first leaf grating 7 is installed, the first described leaf grating 7 is made up of identical the first uniform steam passage window 8 of multiple sizes, is provided with labyrinth casing 5 on the steam output side end face of partition body 1；Radially have some first balance cylinder 22 passages 10 at partition body 1 outer shroud, on partition body 1 steam admission side end face, have the first annular groove of twice 11 near the first steam passage window 8 both sides, in first annular groove 11, be provided with DEVA self-lubrication alloy block 12；The upper and lower two semicircular structure of described swivel becket 2 points, is removably connected by bolt, and swivel becket 2 is arranged in the circumferential groove 13 of partition body 1 front end, and and partition body 1 between there is angle；Swivel becket 2 offers a circular passage along a circumference, circular passage inner peripheral surface offers the second vapour leaf joint groove 14, it is provided with the second leaf grating 15 in the second vapour leaf joint groove 14, second leaf grating 15 is made up of two kinds of second steam passage windows 16 varied in size, the second steam passage window 16 and the first steam passage window 8 one_to_one corresponding；Being provided with twice the second annular groove 18 on swivel becket 2 outer shroud steam output side end face, the second annular groove 18 is corresponding with the first annular groove 11 on partition body 1, is provided with ring body 19 in the second annular groove 18；Swivel becket 2 both sides are respectively welded with a handle 17, and handle 17 is connected with regulation connecting rod 4；Described regulation connecting rod 4 includes that the pull bar of both sides, rod head, main lever, auxiliary lever, auxiliary lever are connected with servomotor 9；3 points of upper and lower cover rings of described vapour balance cylinder cover ring, are fixed by screws on partition body 1；Vapour balance cylinder cover ring 3 offers some second balance cylinder 24 passages 21 vertically, corresponding with the first balance cylinder 22 passage 10, the first balance cylinder 22 making swivel becket 2 front portion is connected with after level, radially offer some 3rd balance cylinder's passages 23 so that second balance cylinder 24 at swivel becket 2 rear portion is connected with before level.
The centrage of the first steam passage window 8 and the second steam passage window 16 and dividing plate center are in same plane, and identical with the distance between dividing plate center.
Described DEVA self-lubrication alloy block 12 is fixed by screws in first annular groove 11, and described ring body 19 is directly welded in the second annular groove 18.
Described labyrinth casing 5 is fixed by screws on the steam output side end face of partition body 1, is provided with labyrinth strip on labyrinth casing 5.
Claims (4)
1. a duplex pull rod self-lubricating balance type rotating dividing plate, it includes partition body, swivel becket, vapour balance cylinder cover ring, regulation connecting rod and labyrinth casing, it is characterized in that: described partition body is divided into upper and lower two semicircular structure, is removably connected by bolt；Partition body has a circular passage along a circumference, circular passage inner peripheral surface offers the first vapour leaf joint groove, in the first vapour leaf joint groove, the first leaf grating is installed, the first described leaf grating is made up of identical the first uniform steam passage window of multiple sizes, is provided with labyrinth casing on the steam output side end face of partition body；Radially have some first balance cylinder's passages at partition body outer shroud, on partition body steam admission side end face, have the first annular groove of twice near the first steam passage window both sides, in first annular groove, be provided with DEVA self-lubrication alloy block；Described swivel becket divides upper and lower two semicircular structure, is removably connected by bolt, and swivel becket is arranged in the circumferential groove of partition body front end, and the plane that the plane at swivel becket radially place and partition body are radially made exists angle；Swivel becket offers a circular passage along a circumference, circular passage inner peripheral surface offers the second vapour leaf joint groove, being provided with the second leaf grating in the second vapour leaf joint groove, the second leaf grating is made up of two kinds of second steam passage windows varied in size, the second steam passage window and the first steam passage window one_to_one corresponding；Being provided with twice the second annular groove on swivel becket outer shroud steam output side end face, the second annular groove is corresponding with the first annular groove on partition body, is provided with ring body in the second annular groove；Swivel becket both sides are respectively welded with a handle, and handle is connected with regulation connecting rod；Described regulation connecting rod includes the pull bar of both sides, rod head, main lever, auxiliary lever, and auxiliary lever is connected with servomotor；Described vapour balance cylinder cover ring divides upper and lower cover ring, is fixed by screws on partition body；Vapour balance cylinder cover ring offers some second balance cylinder's passages vertically, corresponding with first balance cylinder's passage, the first balance cylinder making swivel becket anterior is connected with after level, radially offers some 3rd balance cylinder's passages so that second balance cylinder at swivel becket rear portion is connected with before level.
A kind of duplex pull rod self-lubricating balance type rotating dividing plate the most according to claim 1, is characterized in that: the centrage of the first steam passage window and the second steam passage window and dividing plate center are in same plane, and identical with the distance between dividing plate center.
A kind of duplex pull rod self-lubricating balance type rotating dividing plate the most according to claim 1, is characterized in that: described DEVA self-lubrication alloy block is fixed by screws in first annular groove, and described ring body is directly welded in the second annular groove.
A kind of duplex pull rod self-lubricating balance type rotating dividing plate the most according to claim 1, is characterized in that: described labyrinth casing is fixed by screws on the steam output side end face of partition body, is provided with labyrinth strip on labyrinth casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215541.6A CN104033194B (en) | 2014-05-21 | 2014-05-21 | A kind of duplex pull rod self-lubricating balance type rotating dividing plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215541.6A CN104033194B (en) | 2014-05-21 | 2014-05-21 | A kind of duplex pull rod self-lubricating balance type rotating dividing plate |
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| CN104033194A CN104033194A (en) | 2014-09-10 |
| CN104033194B true CN104033194B (en) | 2016-08-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105201566B (en) * | 2015-10-27 | 2017-01-11 | 哈尔滨汽轮机厂有限责任公司 | 150MW ultrahigh pressure steam extraction and condensing type turbine |
| CN110439637A (en) * | 2019-08-30 | 2019-11-12 | 北京全四维动力科技有限公司 | Steam turbine rotary spacing plate and the steam turbine for using it |
| CN110454244A (en) * | 2019-08-30 | 2019-11-15 | 北京全四维动力科技有限公司 | The steam turbine rotary spacing plate and its manufacturing method being slidably matched for local support |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH589223A5 (en) * | 1975-08-14 | 1977-06-30 | Bbc Brown Boveri & Cie | |
| RU2116464C1 (en) * | 1997-01-24 | 1998-07-27 | Акционерное общество закрытого типа "Энерготех" | Steam-turbine balanced regulating valve |
| JP2002349490A (en) * | 2001-05-22 | 2002-12-04 | Mitsubishi Heavy Ind Ltd | Casing structure of fluid machine |
| CN101021168A (en) * | 2006-12-27 | 2007-08-22 | 上海汽轮机有限公司 | Double-driving force even type rotary partition board exeacting mechanism |
| CN100582689C (en) * | 2008-03-14 | 2010-01-20 | 西安交通大学 | Method for failure analysis of turbine rotary clapboard post-moving blade |
| CN102061949B (en) * | 2009-11-13 | 2013-07-10 | 上海电气电站设备有限公司 | Turbine rotary clapboard and processing technology thereof |
| CN102352782A (en) * | 2011-11-02 | 2012-02-15 | 哈尔滨汽轮机厂有限责任公司 | Rotating barrier for extraction steam turbine with 300MW power |
| JP2013104297A (en) * | 2011-11-10 | 2013-05-30 | Mitsubishi Heavy Ind Ltd | Steam turbine low-pressure casing |
| CN203809067U (en) * | 2014-05-21 | 2014-09-03 | 杭州中能汽轮动力有限公司 | Double-pull-rod self-lubricating balanced-type rotating partition |
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Address after: 310018 No. 18, No. 22, Hangzhou economic and Technological Development Zone, Zhejiang Patentee after: Hangzhou Zhongneng Turbine Machinery Equipment Co.,Ltd. Country or region after: China Address before: 310018 No. 18, No. 22, Hangzhou economic and Technological Development Zone, Zhejiang Patentee before: HANGZHOU CHINEN STEAM TURBINE POWER CO.,LTD. Country or region before: China |
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