CN201884072U - Axially inclined honeycomb steam seal - Google Patents
Axially inclined honeycomb steam seal Download PDFInfo
- Publication number
- CN201884072U CN201884072U CN2010206787465U CN201020678746U CN201884072U CN 201884072 U CN201884072 U CN 201884072U CN 2010206787465 U CN2010206787465 U CN 2010206787465U CN 201020678746 U CN201020678746 U CN 201020678746U CN 201884072 U CN201884072 U CN 201884072U
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- steam
- steam seal
- honeycomb
- seal
- honeycomb steam
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- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to an axially inclined honeycomb steam seal comprising a steam seal body 1, a honeycomb steam seal block 2, steam seal teeth 3 and steam chambers 4, wherein, three steam seal teeth 3 are arranged at the upper part of the steam seal body 1, a honeycomb steam seal block 2 is welded at the upper part of the steam seal body 1, the honeycomb steam seal block 2 is a regular hexahedron, and the steam chambers 4 are formed between the steam lock teeth 3 and a steam turbine shaft 5. The utility model has the following advantage: the axially inclined honeycomb steam seal which can be used for the dynamic-static seal part of a steam turbine has an increased damping effect on the vortex of steam flows. The axially inclined honeycomb steam seal effectively increases the damping effect on the axial flow of steam at the dynamic-static joint part of the steam turbine, thereby reducing the quantity of leaked steam and increasing the heat efficiency of the steam turbine.
Description
Technical field
The utility model relates to a kind of packing, is specially adapted to steam turbine.
Background technique
At present, the Honeycomb steam seal that is installed on the steam turbine is erect type, to the mobile generation damping and amortization deficiency of steam, makes the steam leakage at the through-flow place of being association of activity and inertia of steam turbine bigger.
Summary of the invention
So the purpose of this utility model provides a kind of axioversion Honeycomb steam seal overcoming disadvantages of background technology, it produces big damping and amortization to the steam at the through-flow place of being association of activity and inertia of steam turbine, to reduce steam leakage, improves turbine thermodynamic efficiency.
The technical solution of the utility model is:
A kind of axioversion Honeycomb steam seal, it comprises: labyrinth casing, Honeycomb steam seal piece is characterized in that:
Be provided with gland sealing gear and Honeycomb steam seal piece on the top of labyrinth casing; Described Honeycomb steam seal piece is a regular hexahedron, its upper-end surface and steam turbine axle center line parallel, and the lower end surface is installed in the top of labyrinth casing; Between gland sealing gear and turbine shaft, form steam chest.
" A " of described Honeycomb steam seal piece, " B ", " C ", " D " four sides are the plane of inclination, and true dip direction is the direction of axis line of turbine shaft; Wherein the inclined angle alpha of " A ", " B " face and " C ", " D " face is axial symmetric shape, and α is 0 °～30 °; " C " " D " two sides is the right angle.
Described Honeycomb steam seal piece is one or more cellular structure.
Advantage of the present utility model is: the utility model can be used for the axioversion Honeycomb steam seal at steam turbine static and dynamic sealing place, has increased the eddy current damping effect to the steam steam flow.The utility model has solved the damping of steam when axial flow that steam turbine is association of activity and inertia and is located preferably, so the utility model helps reducing steam leakage, improves turbine thermodynamic efficiency.
Description of drawings
Fig. 1-1, Fig. 1-2, Fig. 1-3 are single Honeycomb steam seal piece three-view diagram in the utility model.
Fig. 2-1, Fig. 2-2 is structural representation of the present utility model.
Fig. 3 is the composite structure schematic representation of a plurality of Honeycomb steam seal pieces in the utility model.
The legend label:
The 1-labyrinth casing; 2-Honeycomb steam seal piece; The 3-gland sealing gear; The 4-steam chest; The 5-turbine shaft.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.As shown in Figure 1, 2, 3, the utility model axioversion Honeycomb steam seal, it comprises: labyrinth casing 1, Honeycomb steam seal piece 2, gland sealing gear 3, steam chest 4.Wherein, be provided with three gland sealing gears 2 on the top of labyrinth casing 1; Be welded with Honeycomb steam seal piece 2 on the top of labyrinth casing 1; Honeycomb steam seal piece 2 is a regular hexahedron; Between gland sealing gear 3 and turbine shaft 5, form steam chest 4.
" A " of described Honeycomb steam seal piece 2, " B ", " C ", " D " four sides are the plane of inclination, and true dip direction is the direction of axis line of turbine shaft 5; Wherein the inclined angle alpha of " A ", " B " face and " C ", " D " face is axial symmetric shape, and α is 0 °～30 °; " C " " D " two sides is the right angle.
The composite structure of a plurality of Honeycomb steam seal pieces in the utility model, as shown in Figure 3.
When steam entered steam chest 4 by the gap between gland sealing gear 3 and the turbine shaft 5, vapor stream was and distributes shape, except that the small amount of steam direct-axis to directly entering next steam chest, all the other steam act on the upper end-hole place of Honeycomb steam seal piece 2 along curve; Because Honeycomb steam seal piece 2 is six side's solid figures, steam volumetric expansion within it also is full of whole this six sides solid space; When steam continuous action during in Honeycomb steam seal piece 2, vapor stream circles round, and forms eddy current with follow-up steam generation collision back, and the flow of steam direction is played damping function, thereby reduced by the steam leakage between gland sealing gear 3 and the turbine shaft 5, improved turbine thermodynamic efficiency.
Claims (3)
1. axioversion Honeycomb steam seal, it comprises: labyrinth casing, Honeycomb steam seal piece is characterized in that: be provided with gland sealing gear and Honeycomb steam seal piece on the top of labyrinth casing; Described Honeycomb steam seal piece is a regular hexahedron, its upper-end surface and steam turbine axle center line parallel, and the lower end surface is installed in the top of labyrinth casing; Between gland sealing gear and turbine shaft, form steam chest.
2. axioversion Honeycomb steam seal according to claim 1 is characterized in that: " A " of described Honeycomb steam seal piece, " B ", " C ", " D " four sides are the plane of inclination; True dip direction is the direction of axis line of turbine shaft; Wherein the inclined angle alpha of " A ", " B " face and " C ", " D " face is axial symmetric shape, and α is 0 °～30 °; " C " " D " two sides is the right angle.
3. axioversion Honeycomb steam seal according to claim 1 is characterized in that: described Honeycomb steam seal piece is one or more cellular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206787465U CN201884072U (en) | 2010-12-14 | 2010-12-14 | Axially inclined honeycomb steam seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206787465U CN201884072U (en) | 2010-12-14 | 2010-12-14 | Axially inclined honeycomb steam seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884072U true CN201884072U (en) | 2011-06-29 |
Family
ID=44181612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206787465U Expired - Lifetime CN201884072U (en) | 2010-12-14 | 2010-12-14 | Axially inclined honeycomb steam seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884072U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075205A (en) * | 2012-12-28 | 2013-05-01 | 东方电气集团东方汽轮机有限公司 | Novel steam seal of steam turbine and processing method thereof |
| CN104213943A (en) * | 2013-05-29 | 2014-12-17 | 三菱日立电力系统株式会社 | Gas turbine |
| CN104514582A (en) * | 2014-12-10 | 2015-04-15 | 南京航空航天大学 | Aero-engine labyrinth tight-sealing structure |
-
2010
- 2010-12-14 CN CN2010206787465U patent/CN201884072U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075205A (en) * | 2012-12-28 | 2013-05-01 | 东方电气集团东方汽轮机有限公司 | Novel steam seal of steam turbine and processing method thereof |
| CN104213943A (en) * | 2013-05-29 | 2014-12-17 | 三菱日立电力系统株式会社 | Gas turbine |
| US9822659B2 (en) | 2013-05-29 | 2017-11-21 | Mitsubishi Hitachi Power Systems, Ltd. | Gas turbine with honeycomb seal |
| CN104514582A (en) * | 2014-12-10 | 2015-04-15 | 南京航空航天大学 | Aero-engine labyrinth tight-sealing structure |
| CN104514582B (en) * | 2014-12-10 | 2016-06-22 | 南京航空航天大学 | Aero-engine labyrinth gas seals seals structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |