CN105927292B - A kind of packing pressure plate structure with seal bond function - Google Patents
A kind of packing pressure plate structure with seal bond function Download PDFInfo
- Publication number
- CN105927292B CN105927292B CN201610384702.3A CN201610384702A CN105927292B CN 105927292 B CN105927292 B CN 105927292B CN 201610384702 A CN201610384702 A CN 201610384702A CN 105927292 B CN105927292 B CN 105927292B
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- CN
- China
- Prior art keywords
- pressing plate
- packing
- steam
- packing pressing
- seal ring
- 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.)
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a kind of packing pressure plate structure with seal bond function, including radial gland, packing pressing plate, steam seal rings；The packing pressing plate is strip, axially disposed, and steam seal ring is pressed on radial gland；Most of horizontal flange region of the packing pressing plate axial length beyond steam seal ring T-slot and covering radial gland；Its thickness protrudes from horizontal flange, is embedded in lower half on partition board.The present invention not only can be well arranged on thin-and-long radial gland, play the role of conventional packing pressing plate, and due to lower half on embedded partition board, carry seal bond function, can effectively obstruct transverse leakage of the steam from radial gland split.
Description
Technical field
The present invention relates to the limiting device that Turbine Steam is enclosed in split, specifically a kind of vapour with seal bond function
Seal pressure plate structure.
Background technology
Needed between the dynamic and static part of steam turbine be arranged sealing gland, so as to reduce or prevent steam from leaking and air to
Inlet side is leak into.Because lower half combines at horizontal flange on labyrinth casing, divide especially in thin-and-long partition board radial gland level
Face is axially longer, and joint is more easy to the leakage of occurred level split.Currently, the packing pressing plate installed at horizontal flange is radial
Arrangement, pressing plate radial dimension is longer and axial dimension is shorter, circumferentially slides and falls off as shown in Figure 1, being only capable of anti-packing segmental arc.
Cannot solve packing split lateral leakage problem.
Invention content
The purpose of the present invention is to solve above-mentioned technical problems, provide a kind of packing pressing plate knot with seal bond function
Structure, the structure can not only push down packing well, moreover it is possible to play good sealing function, prevent split gas leakage.
Realize the technical scheme is that：A kind of packing pressure plate structure with seal bond function, it is characterised in that：Including
Radial gland, packing pressing plate, steam seal ring；The packing pressing plate is strip, axially disposed, and steam seal ring is pressed in radial gland
On；Most of horizontal flange region of the packing pressing plate axial length beyond steam seal ring T-slot and covering radial gland；It is thick
It spends and protrudes from horizontal flange, lower half on embedded partition board.
Packing pressing plate both ends are fixed by pressing plate fixing screws.
The beneficial effects of the invention are as follows：
1, the present invention can be very good to be arranged on thin-and-long radial gland, play the role of conventional packing pressing plate.
2, due to lower half on packing pressing plate insertion partition board, seal bond function is carried, can effectively obstruct steam from radial vapour
Seal the transverse leakage at horizontal flange.
Description of the drawings
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 views of Fig. 2.
Figure label：1-radial gland, 2-packing pressing plates, 3-pressing plate fixing screws, 4-steam seal rings, 5-partition boards,
6-leak direction, 8-horizontal flanges into vapour direction, 7-steam.
Specific implementation mode
As shown in Figure 2 and Figure 3：A kind of packing pressure plate structure with seal bond function, including radial gland 1, packing pressing plate 2,
Steam seal ring 4；The packing pressing plate 2 is that steam seal ring 4 is pressed on radial gland 1 by strip along into the axial arranged of vapour direction 6；
And it is fixed by the pressing plate fixing screws 3 at packing pressing plate both ends；2 axial length of packing pressing plate exceeds steam seal ring 4T type grooves and covering
8 region of most of horizontal flange of radial gland 1；Its thickness protrudes from horizontal flange 8, is embedded in lower half on partition board 5.
The present invention not only can be well arranged on thin-and-long radial gland 1, play the role of conventional packing pressing plate,
And due to lower half on embedded partition board 8, seal bond function is carried, can effectively obstruct steam from radial gland split along steaming
Vapour leaks the transverse leakage in direction 7.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not limiting
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (2)
1. a kind of packing pressure plate structure with seal bond function, it is characterised in that：Including radial gland, packing pressing plate, steam seal ring；
The packing pressing plate be strip, it is axially disposed, by steam seal ring in level respectively end, steam seal ring is pressed in radial direction
On packing；Most of horizontal flange region of the packing pressing plate axial length beyond steam seal ring T-slot and covering radial gland；
Its thickness protrudes from horizontal flange, is embedded in lower half on partition board.
2. the packing pressure plate structure with seal bond function according to claim 1, it is characterised in that：Packing pressing plate both ends
It is fixed by pressing plate fixing screws.
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 CN105927292A (en) | 2016-09-07 |
| CN105927292B true 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) |
Family Cites Families (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 |
| CN103343705B (en) * | 2013-07-19 | 2015-02-18 | 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 |
| CN104454032B (en) * | 2014-10-22 | 2016-04-20 | 东方电气集团东方汽轮机有限公司 | A kind of Turbine Steam encapsulation method and structure |
| 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN105927292A (en) | 2016-09-07 |
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