CN105927292A - Steam seal pressure plate structure with sealing key function - Google Patents
Steam seal pressure plate structure with sealing key function Download PDFInfo
- Publication number
- CN105927292A CN105927292A CN201610384702.3A CN201610384702A CN105927292A CN 105927292 A CN105927292 A CN 105927292A CN 201610384702 A CN201610384702 A CN 201610384702A CN 105927292 A CN105927292 A CN 105927292A
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- CN
- China
- Prior art keywords
- steam seal
- pressure plate
- steam
- seal pressure
- radial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a steam seal pressure plate structure with a sealing key function. The steam seal pressure plate structure comprises a radial steam seal, a steam seal pressure plate and a steam seal ring. The steam seal pressure plate is in a long bar shape and is axially arranged to press the steam seal ring onto the radial steam seal. The steam seal pressure plate exceeds a T-shaped groove of the steam seal ring in the axial length direction and covers most of the area of a horizontal split face of the radial steam seal, and the steam seal pressure plate protrudes the horizontal split face in the thickness direction and is embedded in the upper half part and the lower half part of a partition plate. The steam seal pressure plate structure can be well arranged on the narrow radial steam seal to achieve the function of a conventional steam seal pressure plate, and in addition, due to the fact that the steam seal pressure plate structure is embedded in the upper half part and the lower half part of the partition plate and has the sealing key function, steam can be effectively prevented from transversely leaking from the position of the radial steam seal split face.
Description
Technical field
The present invention relates to Turbine Steam and be enclosed in the stopping means of split, the packing pressure plate structure of a kind of band seal bond function.
Background technology
Need to arrange sealing gland, in order to reduce or prevent steam from leaking and air leaks into inlet side between the dynamic and static part of steam turbine.Because on labyrinth casing, lower half combines at horizontal flange, particularly thin-and-long dividing plate radial gland horizontal flange is axially longer, and joint is more easy to the leakage of occurred level split.At present, the packing pressing plate radial arrangement installed at horizontal flange, pressing plate radial dimension is longer and axial dimension is shorter, as it is shown in figure 1, be only capable of anti-packing segmental arc circumferentially sliding and come off.The packing horizontal leakage problem at split can not be solved.
Summary of the invention
The invention aims to solve above-mentioned technical problem, it is provided that the packing pressure plate structure of a kind of band seal bond function, this structure can not only push down packing well, moreover it is possible to plays good sealing function, prevents split from leaking gas.
Realize the technical scheme is that the packing pressure plate structure of a kind of band seal bond function, it is characterised in that: include radial gland, packing pressing plate, steam seal ring；Described packing pressing plate is strip, axially disposed, steam seal ring is pressed on radial gland；This packing pressing plate axial length is beyond steam seal ring T-slot and most of horizontal flange region of covering radial gland；Its thickness protrudes from horizontal flange, embeds lower half on dividing plate.
Described packing pressing plate two ends are fixed screw by pressing plate and are fixed.
The invention has the beneficial effects as follows:
1, the present invention can well be arranged on thin-and-long radial gland, plays the effect of the packing pressing plate of routine.
2, embed lower half on dividing plate due to packing pressing plate, with seal bond function, can effectively intercept steam transverse leakage at radial gland horizontal flange.
Accompanying drawing explanation
Fig. 1 is existing packing pressure plate structure schematic diagram；
Fig. 2 is packing pressure plate structure schematic diagram of the present invention；
Fig. 3 is the A-A view of Fig. 2.
Label in figure: 1 radial gland, 2 packing pressing plates, 3 pressing plates fix screw, 4 steam seal ring, 5 dividing plates, and 6 enter vapour direction, 7 steam leakage directions, 8 horizontal flanges.
Detailed description of the invention
As shown in Figure 2 and Figure 3: the packing pressure plate structure of a kind of band seal bond function, including radial gland 1, packing pressing plate 2, steam seal ring 4；Described packing pressing plate 2 is strip, along entering the axial arranged of vapour direction 6, steam seal ring 4 is pressed on radial gland 1；And fixed screw 3 by the pressing plate at packing pressing plate two ends and fix；This packing pressing plate 2 axial length is beyond steam seal ring 4T type groove and most of horizontal flange 8 region of covering radial gland 1；Its thickness protrudes from horizontal flange 8, embeds lower half on dividing plate 5.
The present invention is possible not only to be arranged in well on thin-and-long radial gland 1, play the effect of the packing pressing plate of routine, and owing to embedding lower half on dividing plate 8, with seal bond function, can effectively intercept steam transverse leakage along steam leakage direction 7 at radial gland split.
The present invention is illustrated by use above specific case, is only intended to help and understands the present invention, not in order to limit the present invention.For those skilled in the art, according to the thought of the present invention, it is also possible to make some simple deductions, deform or replace.
Claims (2)
1. the packing pressure plate structure of a band seal bond function, it is characterised in that: include radial gland, packing pressing plate, steam seal ring；Described packing pressing plate is strip, axially disposed, steam seal ring is pressed on radial gland；This packing pressing plate axial length is beyond steam seal ring T-slot and most of horizontal flange region of covering radial gland；Its thickness protrudes from horizontal flange, embeds lower half on dividing plate.
The packing pressure plate structure of band seal bond function the most according to claim 1, it is characterised in that: described packing pressing plate two ends are fixed screw by pressing plate and are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384702.3A CN105927292B (en) | 2016-06-02 | 2016-06-02 | A kind of packing pressure plate structure with seal bond function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384702.3A CN105927292B (en) | 2016-06-02 | 2016-06-02 | A kind of packing pressure plate structure with seal bond function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927292A true CN105927292A (en) | 2016-09-07 |
| CN105927292B CN105927292B (en) | 2018-10-16 |
Family
ID=56833194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610384702.3A Active CN105927292B (en) | 2016-06-02 | 2016-06-02 | A kind of packing pressure plate structure with seal bond function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927292B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5979006A (en) * | 1982-10-27 | 1984-05-08 | Hitachi Ltd | Air cooling blade of gas turbine |
| US6131910A (en) * | 1992-11-19 | 2000-10-17 | General Electric Co. | Brush seals and combined labyrinth and brush seals for rotary machines |
| CN201193542Y (en) * | 2008-05-22 | 2009-02-11 | 山东齐鲁电机制造有限公司 | Adjustable steam seal lock screw fastening device |
| JP2010106779A (en) * | 2008-10-31 | 2010-05-13 | Hitachi Ltd | Seal structure for steam turbine and steam turbine |
| CN103343705A (en) * | 2013-07-19 | 2013-10-09 | 东方电气集团东方汽轮机有限公司 | Method for sealing middle-split surface of steam turbine and sealing structure |
| CN104454032A (en) * | 2014-10-22 | 2015-03-25 | 东方电气集团东方汽轮机有限公司 | Steam seal method and structure for steam turbine |
| CN204511527U (en) * | 2015-03-30 | 2015-07-29 | 北京龙威发电技术有限公司 | A kind of combined type can make a concession formula steam turbine low-pressure blade tip seal structure |
-
2016
- 2016-06-02 CN CN201610384702.3A patent/CN105927292B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5979006A (en) * | 1982-10-27 | 1984-05-08 | Hitachi Ltd | Air cooling blade of gas turbine |
| US6131910A (en) * | 1992-11-19 | 2000-10-17 | General Electric Co. | Brush seals and combined labyrinth and brush seals for rotary machines |
| CN201193542Y (en) * | 2008-05-22 | 2009-02-11 | 山东齐鲁电机制造有限公司 | Adjustable steam seal lock screw fastening device |
| JP2010106779A (en) * | 2008-10-31 | 2010-05-13 | Hitachi Ltd | Seal structure for steam turbine and steam turbine |
| CN103343705A (en) * | 2013-07-19 | 2013-10-09 | 东方电气集团东方汽轮机有限公司 | Method for sealing middle-split surface of steam turbine and sealing structure |
| CN104454032A (en) * | 2014-10-22 | 2015-03-25 | 东方电气集团东方汽轮机有限公司 | Steam seal method and structure for steam turbine |
| CN204511527U (en) * | 2015-03-30 | 2015-07-29 | 北京龙威发电技术有限公司 | A kind of combined type can make a concession formula steam turbine low-pressure blade tip seal structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105927292B (en) | 2018-10-16 |
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