CN202402139U - Inter-shaft sealing device - Google Patents
Inter-shaft sealing device Download PDFInfo
- Publication number
- CN202402139U CN202402139U CN2011205687430U CN201120568743U CN202402139U CN 202402139 U CN202402139 U CN 202402139U CN 2011205687430 U CN2011205687430 U CN 2011205687430U CN 201120568743 U CN201120568743 U CN 201120568743U CN 202402139 U CN202402139 U CN 202402139U
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- Prior art keywords
- joint
- seal ring
- centers
- runway
- sealing device
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Abstract
The utility model relates to a sealing device used between rotary shafts, in particular to an inter-shaft sealing device for sealing a bearing cavity in a gas turbine engine. A joint on a seal ring of the sealing device is a Z-shaped joint consisting of two axial cuts and a peripheral cut. A race is provided with a plurality of radial through holes. The joint of the seal ring of the sealing device is Z-shaped, slants of slanting lap joints are omitted, and accordingly gas leakage rate is reduced for the sealing device, and machining difficulty is lowered. In addition, the race is provided with the through holes, the gas flows through the through holes when an inner rotary shaft rotates, and the race can be cooled.
Description
Technical field
The utility model relates to a kind of seal arrangement that is applied between running shaft, especially about being used for the between centers seal arrangement that bearing bore is obturaged in a kind of gas turbine engine.
Background technique
The current seal form that can be used between centers has two kinds of structures: a kind of is the sealing of comb tooth, and another kind is a graphite grazing.A kind of between centers graphite grazing patent of foreign application (patent No.: RU2303148C1) be opening ring type graphite grazing.The seal ring joint design of this seal arrangement is the key that influences seal performance, and joint generally has straight mouthful of joint and scarf joint mouth to connect first two joint geometry.A straight mouthful joint causes hyperbaric chamber directly to be communicated with low pressure chamber, and quantity of gas leakage is big; Scarf joint mouth joint seal performance is good, but very difficult aspect processing, yield rate is low, causes cost of production to increase.
The model utility content
The utility model technical problem to be solved is: provide that a kind of seal performance is good, the between centers seal arrangement of easy processing.
The technological scheme of the utility model: a kind of between centers seal arrangement, the joint on the seal ring are Z font joint, and Z font joint is formed by two axial cut-outs and a circumferential cut; Have some radial direction through hole on the said runway.
The beneficial effect of the utility model: the utility model seal ring joint adopts the Z font structure, has cancelled the inclined-plane of oblique joint, thereby when having reduced the seal arrangement released gas rate, has reduced difficulty of processing; Simultaneously, have through hole on the runway, in interior rotating shaft rotation, air-flow flows through from through hole, can reduce the temperature of runway.
Description of drawings
Fig. 1 is the anchor ring sectional view of the utility model between centers seal arrangement first mode of execution;
Fig. 2 is the Z font joint structure schematic representation of seal ring in the utility model between centers seal arrangement;
Fig. 3 be between centers seal arrangement mesolow side sealing ring shown in Figure 1 just wait side view;
Fig. 4 be in the between centers seal arrangement shown in Figure 1 runway just wait side view;
Fig. 5 is the anchor ring sectional view of the utility model between centers seal arrangement second mode of execution;
Wherein, rotating shaft in 1-low voltage side seal ring, 2-high pressure side seal ring, 3-low voltage side pad, 4-high pressure side pad, 5-high pressure side runway, 6-spacer sleeve, 7-wavy spring, the 8-, 9-runway, 10-Z font joint, 11-through hole, 12-axial cut-outs, 13-circumferential cut.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed description.
See also Fig. 1, it is the anchor ring sectional view of the utility model between centers seal arrangement first mode of execution.In this mode of execution, said between centers seal arrangement comprises low voltage side seal ring 1, high pressure side seal ring 2, low voltage side pad 3, high pressure side pad 4, high pressure side runway 5, spacer sleeve 6, wavy spring 7 and runway 9.See also Fig. 2, Fig. 3, said low voltage side seal ring 1 has place's radial opening, and opening forms Z font joint 10, and Z font joint 10 is formed by two axial cut-outs 12 and a circumferential cut 13.See also Fig. 4, have some radial direction through hole 11 on the runway 9.In interior rotating shaft 8 rotations, air-flow flows through from through hole 11, can reduce the temperature of runway.Joint axial cut-outs 12 width are 0.1～0.3mm, and joint circumferential cut 13 width are 0.01～0.03mm.Through hole 11 is along circumferentially evenly distributing.
See also Fig. 5, it is the anchor ring sectional view of the utility model between centers seal arrangement second mode of execution.In this embodiment, the between centers seal arrangement comprises seal ring 1, spacer sleeve 6 and runway 9.Shown in first mode of execution, wherein seal ring 1 has place's radial opening, and opening forms Z font joint 10, and Z font joint 10 is formed by two axial cut-outs 12 and a circumferential cut 13; Have some radial direction through hole 11 on the runway 9.Joint axial cut-outs 12 width are 0.1～0.3mm, and joint circumferential cut 13 width are 0.01～0.03mm.Through hole 11 is along circumferentially evenly distributing.
Claims (6)
1. between centers seal arrangement; Comprise low voltage side seal ring (1), high pressure side seal ring (2), low voltage side pad (3), high pressure side pad (4), high pressure side runway (5), spacer sleeve (6), wavy spring (7) and runway (9); Wherein said low voltage side seal ring (1) has place's radial opening; Opening forms SEALING FITTING, and it is characterized by: the joint on the said low voltage side seal ring is a Z font joint (10), and Z font joint (10) is formed by two axial cut-outs (12) and a circumferential cut (13); Have some radial direction through hole (11) on the said runway (9).
2. between centers seal arrangement according to claim 1 is characterized by: said joint axial cut-outs (12) width is 0.1～0.3mm, and joint circumferential cut (13) width is 0.01～0.03mm.
3. between centers seal arrangement according to claim 1 and 2 is characterized by: said through hole (11) is along circumferentially evenly distributing.
4. between centers seal arrangement; Comprise seal ring (1), spacer sleeve (6), runway (9); Wherein said seal ring (1) has place's radial opening; Opening forms SEALING FITTING, and it is characterized by: the joint on the said seal ring is a Z font joint (10), and Z font joint (10) is formed by two axial cut-outs (12) and a circumferential cut (13); Have some radial direction through hole (11) on the said runway (9).
5. between centers seal arrangement according to claim 4 is characterized by: said joint axial cut-outs (12) width is 0.1～0.3mm, and joint circumferential cut (13) width is 0.01～0.03mm.
6. according to claim 4 or 5 described between centers seal arrangements, it is characterized by: said through hole (11) is along circumferentially evenly distributing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205687430U CN202402139U (en) | 2011-12-31 | 2011-12-31 | Inter-shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205687430U CN202402139U (en) | 2011-12-31 | 2011-12-31 | Inter-shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402139U true CN202402139U (en) | 2012-08-29 |
Family
ID=46699790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205687430U Expired - Lifetime CN202402139U (en) | 2011-12-31 | 2011-12-31 | Inter-shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402139U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121371A (en) * | 2014-06-27 | 2014-10-29 | 中国中材国际工程股份有限公司 | Double-ring structure for ring-splicing type graphite seal |
| CN104500743A (en) * | 2014-12-15 | 2015-04-08 | 中国燃气涡轮研究院 | Sealing device between reverse-rotating shafts |
| CN110131049A (en) * | 2018-02-09 | 2019-08-16 | 中国航发商用航空发动机有限责任公司 | For the sealing ring between engine rotor |
| CN110249164A (en) * | 2017-01-10 | 2019-09-17 | 圣戈班高性能塑料有限公司 | Sealing ring and preparation method thereof |
-
2011
- 2011-12-31 CN CN2011205687430U patent/CN202402139U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121371A (en) * | 2014-06-27 | 2014-10-29 | 中国中材国际工程股份有限公司 | Double-ring structure for ring-splicing type graphite seal |
| CN104500743A (en) * | 2014-12-15 | 2015-04-08 | 中国燃气涡轮研究院 | Sealing device between reverse-rotating shafts |
| CN110249164A (en) * | 2017-01-10 | 2019-09-17 | 圣戈班高性能塑料有限公司 | Sealing ring and preparation method thereof |
| CN110249164B (en) * | 2017-01-10 | 2021-03-09 | 圣戈班性能塑料L+S 有限公司 | Sealing ring and preparation method thereof |
| CN110131049A (en) * | 2018-02-09 | 2019-08-16 | 中国航发商用航空发动机有限责任公司 | For the sealing ring between engine rotor |
| CN110131049B (en) * | 2018-02-09 | 2020-11-03 | 中国航发商用航空发动机有限责任公司 | Sealing ring for engine rotor |
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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: 20120829 |
|
| CX01 | Expiry of patent term |