CN105317560A - Supporting-case inner ring fairing structure - Google Patents
Supporting-case inner ring fairing structure Download PDFInfo
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- CN105317560A CN105317560A CN201510259417.4A CN201510259417A CN105317560A CN 105317560 A CN105317560 A CN 105317560A CN 201510259417 A CN201510259417 A CN 201510259417A CN 105317560 A CN105317560 A CN 105317560A
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- inner ring
- grab
- block
- mounting edge
- internal diameter
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- Turbine Rotor Nozzle Sealing (AREA)
- Thermal Insulation (AREA)
Abstract
Disclosed is a supporting-case inner ring fairing structure. The supporting-case inner ring fairing structure comprises a front half installation edge, a front half, a turning-connection transition section, a stop piece, stop blocks, an assembly process bevel, a reinforcing rib, a clamping hook, a concave face, a rear half, a rear half installation edge, a stop block inner diameter, a clamping hook outer diameter, a front half inner diameter, an elastic stiffener, an elastic ring and an avoidance groove. Front-rear split-half structure design is adopted for a fairing. The split-half position is the maximum thickness point T of a support plate. The whole of the front half and the rear half is of a barrel-shaped structure. The support plate is provided with the avoidance groove. The reinforcing rib and the elastic stiffener are added to the inner surface of the turning-connection transition section. An overlapping structure is adopted for the split-half position. The front half is provided with the radial stop piece, the axial limiting stop block and the assembly process bevel. The rear half is provided with the avoidance stop block. The avoidance stop block is provided with the concave face and the clamping hook. The stop block inner diameter and the front half inner diameter are smaller than the clamping hook outer diameter. The supporting-case inner ring fairing structure has the advantages that the structure is reliable, and assembly is simple; air flow separation is reduced, and flow channel loss is lowered; meanwhile, a heat insulation cavity is formed, so that the heat insulation effect is achieved to an inner cavity.
Description
Technical field
The present invention relates to gas turbine, the cowling of support case pipes' analysis of aeroengine and thermal shield design field, particularly a kind of support case inner ring dome structure.
Background technique
Rear support case is between low-pressure turbine exit and spout, the gas circuit of a transition is provided, but also be that rotor bearing and the installation of motor rear portion provide a framework, its the most basic pneumatic requirement is to provide one and is not separated, there is the combustion gas runner of least disadvantage, make cavity temperature in framework be in zone of reasonableness simultaneously, ensure interior support and lubrication system stable operation.Therefore, along with being connected transition to turbine runner with rear housing load-bearing frame inner flow passage and interior outer flow passage profile requires more and more higher, simultaneously along with the lifting of motor and gas turbine performance, inlet temperature and the delivery temperature of turbine improve constantly, and therefore propose requirements at the higher level to the impact of load-bearing frame inner ring pipes' analysis type and the internal cavity temperature of minimizing runner combustion gas.
At present, support case framework mainly adopts welding and casting to manufacture, general by inner ring, outer shroud, support plate, interior mounting edge, outer mounting edge, inner chamber supporting system forms, support plate circumference is symmetrical or mal-distribution by some circumferences, inner ring and external annular surface are simultaneously as pipes' analysis, meet the requirement of motor stream, along with requiring to improve, inner ring profile cannot meet engine performance requirement, and higher temperature cannot be born, wall more than 650 DEG C, play heat-blocking action in ring cavity, need to invent a kind of structure simple, easy for installation, the runner cowling of reliable performance, meet above-mentioned requirements.
Summary of the invention
The object of the invention is for meeting runner performance and inner chamber thermal insulation requirement, spy provides a kind of support case inner ring dome structure.
The invention provides a kind of support case inner ring dome structure, it is characterized in that: described support case inner ring dome structure, comprises first half mounting edge, first half, switching changeover portion, catch, block, assembly technology inclined-plane, strengthening rib, grab, concave surface, later half, later half mounting edge, block internal diameter, grab external diameter, first half internal diameter, elastic reinforcement muscle, elastic ring, allows groove;
Point half structure design before and after cowling adopts, subluxation is divided to be set to a plate thickness maximum point T place, first half and rear semi-monolithic are tubular construction, support plate place opens escape groove, switching changeover portion is at internal surface increase-strengthening rib and-elastic reinforcement muscle, half place is divided to adopt bridging arrangement, radial catch is designed in first half, axial limiting block, and assembly technology inclined-plane, later half being provided with dodges block, dodge block with concave surface and grab, in order to improve structure stability and the rigidity of lap-joint, block internal diameter and first half internal diameter are less than grab external diameter, after ensureing assembling there is tightness in grab external diameter and first half internal diameter,
Before the first half mounting edge of cowling first half and casing inner ring, mounting edge is adjacent to, screw bolt and nut is utilized to compress, be contained in cowling later half in, grab and technique contact of incline plane, later half distortion press-in, when axial displacement is greater than block length, grab external diameter and first half internal diameter push against contacting, after later half mounting edge and casing inner ring, mounting edge is adjacent to, screw in compression.
Between cowling and casing inner ring, add heat-insulation chamber, heat-blocking action is served to inner chamber.
Advantage of the present invention:
Support case inner ring dome structure of the present invention, structure is reliable, and assembling is simple, can realize reducing airflow breakaway and reducing passages losses, form heat-insulation chamber simultaneously, heat-blocking action is played to inner chamber, in the rectification that can be widely used in gas turbine support case inner ring and Design on thermal insulation.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is support case inner ring dome structure overall schematic;
Fig. 2 be support case inner ring dome structure allow groove structural representation;
Fig. 3 is support case inner ring dome structure partial schematic diagram;
In figure, 1-first half mounting edge; 2-first half; 2a-transfers changeover portion; 3-catch; 4-block; 5-assembly technology inclined-plane; 6-strengthening rib; 7-grab; 8-concave surface; 9-is later half; The later half mounting edge of 10-; 11-block internal diameter; 12-grab external diameter; 13-first half internal diameter; 14-elastic reinforcement muscle; 15-elastic ring; 16-allows groove, 17-casing, 18-bolt I, 19-bolt, 20-heat-insulation chamber.
Embodiment
Embodiment 1
Present embodiments provide a kind of support case inner ring dome structure, it is characterized in that: described support case inner ring dome structure, comprises first half mounting edge, first half, switching changeover portion, catch, block, assembly technology inclined-plane, strengthening rib, grab, concave surface, later half, later half mounting edge, block internal diameter, grab external diameter, first half internal diameter, elastic reinforcement muscle, elastic ring, allows groove;
Point half structure design before and after cowling adopts, subluxation is divided to be set to a plate thickness maximum point T place, first half and rear semi-monolithic are tubular construction, support plate place opens escape groove, switching changeover portion is at internal surface increase-strengthening rib and-elastic reinforcement muscle, half place is divided to adopt bridging arrangement, radial catch is designed in first half, axial limiting block, and assembly technology inclined-plane, later half being provided with dodges block, dodge block with concave surface and grab, in order to improve structure stability and the rigidity of lap-joint, block internal diameter and first half internal diameter are less than grab external diameter, after ensureing assembling there is tightness in grab external diameter and first half internal diameter,
Before the first half mounting edge of cowling first half and casing inner ring, mounting edge is adjacent to, screw bolt and nut is utilized to compress, be contained in cowling later half in, grab and technique contact of incline plane, later half distortion press-in, when axial displacement is greater than block length, grab external diameter and first half internal diameter push against contacting, after later half mounting edge and casing inner ring, mounting edge is adjacent to, screw in compression.
Between cowling and casing inner ring, add heat-insulation chamber, heat-blocking action is served to inner chamber.
Embodiment 2
Present embodiments provide a kind of support case inner ring dome structure, it is characterized in that: described support case inner ring dome structure, comprises first half mounting edge, first half, switching changeover portion, catch, block, assembly technology inclined-plane, strengthening rib, grab, concave surface, later half, later half mounting edge, block internal diameter, grab external diameter, first half internal diameter, elastic reinforcement muscle, elastic ring, allows groove;
Point half structure design before and after cowling adopts, subluxation is divided to be set to a plate thickness maximum point T place, first half and rear semi-monolithic are tubular construction, support plate place opens escape groove, switching changeover portion is at internal surface increase-strengthening rib and-elastic reinforcement muscle, half place is divided to adopt bridging arrangement, radial catch is designed in first half, axial limiting block, and assembly technology inclined-plane, later half being provided with dodges block, dodge block with concave surface and grab, in order to improve structure stability and the rigidity of lap-joint, block internal diameter and first half internal diameter are less than grab external diameter, after ensureing assembling there is tightness in grab external diameter and first half internal diameter,
Before the first half mounting edge of cowling first half and casing inner ring, mounting edge is adjacent to, screw bolt and nut is utilized to compress, be contained in cowling later half in, grab and technique contact of incline plane, later half distortion press-in, when axial displacement is greater than block length, grab external diameter and first half internal diameter push against contacting, after later half mounting edge and casing inner ring, mounting edge is adjacent to, screw in compression.
Claims (2)
1. a support case inner ring dome structure, is characterized in that: described support case inner ring dome structure, comprises first half mounting edge, first half, switching changeover portion, catch, block, assembly technology inclined-plane, strengthening rib, grab, concave surface, later half, later half mounting edge, block internal diameter, grab external diameter, first half internal diameter, elastic reinforcement muscle, elastic ring, allows groove;
Point half structure design before and after cowling adopts, subluxation is divided to be set to a plate thickness maximum point T place, first half and rear semi-monolithic are tubular construction, support plate place opens escape groove, switching changeover portion is at internal surface increase-strengthening rib and-elastic reinforcement muscle, half place is divided to adopt bridging arrangement, radial catch is designed in first half, axial limiting block, and assembly technology inclined-plane, later half being provided with dodges block, dodges block with concave surface and grab, block internal diameter and first half internal diameter are less than grab external diameter, and after ensureing assembling, grab external diameter and first half internal diameter exist tightness;
Before the first half mounting edge of cowling first half and casing inner ring, mounting edge is adjacent to, screw bolt and nut is utilized to compress, be contained in cowling later half in, grab and technique contact of incline plane, later half distortion press-in, when axial displacement is greater than block length, grab external diameter and first half internal diameter push against contacting, after later half mounting edge and casing inner ring, mounting edge is adjacent to, screw in compression.
2., according to support case inner ring dome structure according to claim 1, it is characterized in that: between cowling and casing inner ring, add heat-insulation chamber, heat-blocking action is served to inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259417.4A CN105317560B (en) | 2015-05-19 | 2015-05-19 | A kind of support case internal ring dome structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259417.4A CN105317560B (en) | 2015-05-19 | 2015-05-19 | A kind of support case internal ring dome structure |
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| Publication Number | Publication Date |
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| CN105317560A true CN105317560A (en) | 2016-02-10 |
| CN105317560B CN105317560B (en) | 2017-04-05 |
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| CN201510259417.4A Active CN105317560B (en) | 2015-05-19 | 2015-05-19 | A kind of support case internal ring dome structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106640233A (en) * | 2017-01-23 | 2017-05-10 | 中国航发沈阳发动机研究所 | Turbine bearing case heat insulation flowing channel and engine with same |
| CN107246326A (en) * | 2017-07-05 | 2017-10-13 | 中国科学院工程热物理研究所 | A kind of new work engine fuel feeding support plate case structure and the engine comprising the structure |
| CN110821583A (en) * | 2019-12-05 | 2020-02-21 | 中国航发四川燃气涡轮研究院 | Edge connecting structure of cartridge receiver barrel and cartridge receiver |
| CN115716536A (en) * | 2022-10-25 | 2023-02-28 | 中国航发沈阳发动机研究所 | Thin-wall high-strength oblique support plate bearing frame structure |
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| WO2009108084A1 (en) * | 2008-02-25 | 2009-09-03 | Volvo Aero Corporation | A gas turbine component and a method for producing a gas turbine component |
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| WO2014052007A1 (en) * | 2012-09-28 | 2014-04-03 | United Technologies Corporation | Mid-turbine frame with fairing attachment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106640233A (en) * | 2017-01-23 | 2017-05-10 | 中国航发沈阳发动机研究所 | Turbine bearing case heat insulation flowing channel and engine with same |
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| CN107246326A (en) * | 2017-07-05 | 2017-10-13 | 中国科学院工程热物理研究所 | A kind of new work engine fuel feeding support plate case structure and the engine comprising the structure |
| CN107246326B (en) * | 2017-07-05 | 2018-12-14 | 中国科学院工程热物理研究所 | A kind of engine oil supporting plate case structure and the engine comprising the structure |
| CN110821583A (en) * | 2019-12-05 | 2020-02-21 | 中国航发四川燃气涡轮研究院 | Edge connecting structure of cartridge receiver barrel and cartridge receiver |
| CN115716536A (en) * | 2022-10-25 | 2023-02-28 | 中国航发沈阳发动机研究所 | Thin-wall high-strength oblique support plate bearing frame structure |
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| Publication number | Publication date |
|---|---|
| CN105317560B (en) | 2017-04-05 |
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