CN204175338U - A kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure - Google Patents
A kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure Download PDFInfo
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- CN204175338U CN204175338U CN201420657051.7U CN201420657051U CN204175338U CN 204175338 U CN204175338 U CN 204175338U CN 201420657051 U CN201420657051 U CN 201420657051U CN 204175338 U CN204175338 U CN 204175338U
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- wheel disc
- ring gear
- tooth
- obturaging
- comb ring
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Abstract
The utility model relates to a kind of high-pressure turbine dish of aeroengine, is specially a kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure.It comprises wheel disc, obturage comb ring gear and connection pin, and arrange seam in described wheel disc, described wheel disc and comb ring gear of obturaging are located by described seam, and described wheel disc and comb ring gear of obturaging are fixed together by connecting pin.The utility model is by fully analyzing and researching to high-pressure turbine dish comb tooth crack fault, and testing and verification, proposing the structural type of when repairing the high-pressure turbine dish of former entirety being changed system into wheel disc and comb ring gear split of obturaging, solving and cause because obturaging comb ring gear crackle the problem that whole wheel disc is scrapped with replacing comb ring gear of obturaging.
Description
Technical field
The utility model relates to a kind of high-pressure turbine dish of aeroengine, particularly a kind ofly adopts wheel disc and obturages the high-pressure turbine dish of comb ring gear split structure.
Background technique
The high-pressure turbine dish of existing aeroengine, as shown in Figure 2, its wheel disc and comb tooth of obturaging are overall structures.The high-pressure turbine dish of this structure is often obturaged comb tooth crack fault, causes whole high-pressure turbine dish to be scrapped because obturaging comb ring gear crackle.And this rate of fault is higher, harmfulness is large, is engine overhaul unsolved problem always.According to high-pressure turbine disk seal sternly comb fissure line failure condition, once considered multiple troubleshooting scheme, as polishing or turning crackle or beat the Anticracks such as stop hole at crack tip, but result all can not solve wheel disc comb tooth crack problem effectively.Carried out the work of high-pressure turbine dish comb fissure line the Study on Fault, object is by the dish failure mechanism research of high whirlpool, finds out failure cause for this reason.Test by comprehensive system, analyze and research, reduce engine overhaul expense, high-pressure turbine dish fault is got rid of.
Model utility content
The utility model is by fully analyzing and researching to high-pressure turbine dish comb tooth crack fault, and testing and verification, proposing the structural type of when repairing the high-pressure turbine dish of former entirety being changed system into wheel disc and comb ring gear split of obturaging, solving and cause because obturaging comb ring gear crackle the problem that whole wheel disc is scrapped with replacing comb ring gear of obturaging.
The technical solution of the utility model is as follows:
A kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure, comprise wheel disc, obturage comb ring gear and connect pin, in described wheel disc, seam is set, described wheel disc and comb ring gear of obturaging are located by described seam, and described wheel disc and comb ring gear of obturaging are fixed together by connecting pin.
The high-pressure turbine dish of described employing wheel disc and comb ring gear split structure of obturaging, its preferred version is, described wheel disc and described comb ring gear fitting surface of obturaging are interference fit.
The high-pressure turbine dish of described employing wheel disc and comb ring gear split structure of obturaging, its preferred version is, described wheel disc arranges multiple tongue-and-groove, is drilled with radial peg nail bottom described tongue-and-groove, and described connection pin is arranged in described radial peg nail.
The high-pressure turbine dish of described employing wheel disc and comb ring gear split structure of obturaging, its preferred version is, the described comb tooth obturaged on comb ring gear comprises the first tooth, the second tooth and the 3rd tooth, described comb tooth is not Equidep structure, described first tooth is positioned at the distalmost end of distance wheel disc, the tooth depth value of described first tooth is minimum, described 3rd tooth is positioned at the most proximal end of distance wheel disc, the tooth depth value of described 3rd tooth is maximum, described second tooth is between the first tooth and the 3rd tooth, and the tooth depth value of described second tooth is intermediate value.
The utility model is the reliability ensureing split structure high-pressure turbine dish Curve guide impeller, correlation test checking has been carried out to the turbine disk, obturage comb ring gear and connection pin etc., the analysis of experiments stress analysis of split structure high-pressure turbine dish wheel disc, obturage relevant portion such as comb ring gear and attachment pegs under effect of centrifugal force, stress level and varying number connect pin stress and concentrate situation change, design and improvement provides necessary technology foundation for split structure high-pressure turbine dish.Test result shows: high-pressure turbine dish also exists the local region of high stress, though the stress of high stress point has exceeded the yield limit of disc material, but still in plasticity wheel disc allowed band; Due to employing dish and comb ring gear separate structure of obturaging, for installing comb ring gear of obturaging, bottom each tongue-and-groove, being drilled with radial peg nail, causing stress to concentrate thus, make wheel disc chase mortise base apertures limit form the region of high stress.But stress is still lower than the stress on wheel disc and axle connecting hole limit, cold air hole limit herein.
In order to verify the bearing capacity of the turbine disk in overtemperature excess revolutions situation further, overtemperature overspeed test is carried out to the high-pressure turbine dish of split structure, to verify its margin of safety nargin.From test result, wheel center hole stress is maximum, and center hole front end amount of deformation is maximum, under maximum functional rotating speed, enter plastic state.From measurement result, adopt split structure, comb ring gear amount of deformation after overtemperature overspeed test of obturaging is little.Post-test-inspection comb ring gear does not find any problem having impact to use, comb ring gear does not find any problem with the pin that connects of wheel disc connection place yet, this illustrates the examination that the high-pressure turbine dish of split structure have passed overtemperature overspeed test and destroys speed test have enough margins of safety.
The beneficial effects of the utility model:
1, according to the concrete structure of high-pressure turbine dish, devise the radial organization plan of selling nail directly to households and connecting wheel disc and comb ring gear of obturaging, this connection scheme pin stress is good, easy to process, realizes than being easier to.
2, due to obturage comb ring gear work time be loud-speaker shape be out of shape, namely the first tooth distortion away from wheel disc is maximum, the wearing and tearing that the first tooth and aeroengine two lead inframarginal are so then increased the weight of, therefore obturage comb tooth design in have employed not Equidep structure, to alleviate its wearing and tearing, prevent the generation of its crackle.
3, high-pressure turbine dish adopts the project organization of obturage comb ring gear and wheel disc split, fundamentally solves the problem of scrapping wheel disc because of comb fissure line, and improves working life and the functional reliability of wheel disc.Change comb ring gear repairing technology simple, frock variation is little, and technique inheritance is good.Greatly reduce the cost of repairs of motor, therefore adopt the repair method changing comb ring gear to have great Social benefit and economic benefit
4, in this structure, the turbine disk and use interference seam between comb ring gear of obturaging are located, and connect by radial pin, the technological method changing comb ring gear is simple, and technique inheritance is good, and whole Replacement procedure all carries out on rotor, is convenient to promote the use of in repair shop.
Accompanying drawing explanation
Fig. 1 is the high-pressure turbine dish sectional view adopting wheel disc and comb ring gear split structure of obturaging;
Fig. 2 is Integral high-pressure turbine disk sectional view.
Embodiment
As shown in Figure 1, 2, a kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure, comprise wheel disc 1, obturage comb ring gear 2 and connect pin 3, in described wheel disc, seam is set, described wheel disc 1 and comb ring gear 2 of obturaging are located by described seam, described wheel disc 1 is interference fit with described comb ring gear 2 fitting surface of obturaging, described wheel disc 1 arranges multiple tongue-and-groove, radial peg nail is drilled with bottom described tongue-and-groove, described connection pin 3 is arranged in described radial peg nail, and described wheel disc 1 and comb ring gear 2 of obturaging are fixed together by connecting pin 3.The described comb tooth obturaged on comb ring gear 2 comprises the first tooth 4, second tooth 5 and the 3rd tooth 6, described comb tooth is not Equidep structure, described first tooth 4 is positioned at the distalmost end of distance wheel disc, the tooth depth value of described first tooth 4 is minimum, described 3rd tooth 6 is positioned at the most proximal end of distance wheel disc, the tooth depth value of described 3rd tooth 6 is maximum, and described second tooth 5 is between the first tooth 4 and the 3rd tooth 6, and the tooth depth value of described second tooth 5 is intermediate value.
In wheel disc chase mortise, when processing the pin hole of φ 4mm first, the 5th tenon tooth partial operation is fallen, when comb ring gear is obturaged in replacing, former attachment pegs nail bit need be fallen, connecting pin diameter should strengthen 0.2mm, and pin aperture is corresponding increasing also, for ensureing tenon tooth intensity, during lead plug nail, should not encounter the 4th tenon tooth, by the restriction of this condition, pin hole can be machined to φ 4.4mm, replaceable like this comb ring gear of obturaging for three times.
Claims (4)
1. one kind adopts wheel disc and the high-pressure turbine dish of comb ring gear split structure of obturaging, it is characterized in that, described high-pressure turbine dish comprises wheel disc, obturage comb ring gear and connection pin, in described wheel disc, seam is set, described wheel disc and comb ring gear of obturaging are located by described seam, and described wheel disc and comb ring gear of obturaging are fixed together by connecting pin.
2. the high-pressure turbine dish of employing wheel disc according to claim 1 and comb ring gear split structure of obturaging, it is characterized in that, described wheel disc and described comb ring gear fitting surface of obturaging are interference fit.
3. the high-pressure turbine dish of employing wheel disc according to claim 1 and comb ring gear split structure of obturaging, it is characterized in that, described wheel disc arranges multiple tongue-and-groove, is drilled with radial peg nail bottom described tongue-and-groove, and described connection pin is arranged in described radial peg nail.
4. the high-pressure turbine dish of employing wheel disc according to claim 1 and comb ring gear split structure of obturaging, it is characterized in that, the described comb tooth obturaged on comb ring gear comprises the first tooth, the second tooth and the 3rd tooth, described comb tooth is not Equidep structure, described first tooth is positioned at the distalmost end of distance wheel disc, the tooth depth value of described first tooth is minimum, described 3rd tooth is positioned at the most proximal end of distance wheel disc, the tooth depth value of described 3rd tooth is maximum, described second tooth is between the first tooth and the 3rd tooth, and the tooth depth value of described second tooth is intermediate value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657051.7U CN204175338U (en) | 2014-11-05 | 2014-11-05 | A kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657051.7U CN204175338U (en) | 2014-11-05 | 2014-11-05 | A kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175338U true CN204175338U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420657051.7U Expired - Fee Related CN204175338U (en) | 2014-11-05 | 2014-11-05 | A kind ofly adopt wheel disc and obturage the high-pressure turbine dish of comb ring gear split structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204175338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324698A (en) * | 2020-11-03 | 2021-02-05 | 中国航发沈阳发动机研究所 | Air-entraining sealing device and air compressor air-entraining sealing structure thereof |
-
2014
- 2014-11-05 CN CN201420657051.7U patent/CN204175338U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324698A (en) * | 2020-11-03 | 2021-02-05 | 中国航发沈阳发动机研究所 | Air-entraining sealing device and air compressor air-entraining sealing structure thereof |
| CN112324698B (en) * | 2020-11-03 | 2022-03-04 | 中国航发沈阳发动机研究所 | Air-entraining sealing device and air compressor air-entraining sealing structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20201105 |