CN203249769U - Net-type distortion device used for high-bypass ratio engine - Google Patents
Net-type distortion device used for high-bypass ratio engine Download PDFInfo
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- CN203249769U CN203249769U CN 201320188858 CN201320188858U CN203249769U CN 203249769 U CN203249769 U CN 203249769U CN 201320188858 CN201320188858 CN 201320188858 CN 201320188858 U CN201320188858 U CN 201320188858U CN 203249769 U CN203249769 U CN 203249769U
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Abstract
A net-type distortion device used for a high-bypass ratio engine includes a diameter-varying segment, a distortion component, a measurement pipeline, a test pipeline, a binding net, a base net, a skeleton and a center fairing cone; the front end surface of the diameter-varying segment is connected with an air entering channel of a rack of the engine; the rear end surface of the diameter-varying segment is connected with the distortion component through a bolt; the distortion component is connected with the measurement pipeline through a bolt; with a socket type connection mode adopted, flexible connection between the air entering channel of the rack and a fan casing can be ensured; the binding net comprises a group of semi-circular nets with different specifications and is used for generating air entering distortion; the base net is a 360-degree complete net and is used for supporting the binding net, and is adopted as a supporting skeleton for the binding net so as to guarantee the structural strength of the binding net; the skeleton is used for supporting the base net and the binding net and can satisfy aerodynamic design requirements; and the center fairing cone is used for the fixation of the binding net, the base network and the skeleton. The net-type distortion device of the utility model is a segmented detachable structure, and therefore, the limitation of the rack on the length of the device can be eliminated. The net-type distortion device used for the high-bypass ratio engine is advantageous in excellent safety, small length, adjustability in distortion indexes and ensured convenient and simple test operation.
Description
Technical field
The utility model relates to large bypass ratio engine, and bypass ratio is more than 5, aberration test device design field, particularly a kind of large bypass ratio engine with net formula distortion device.
Background technology
At present, little bypass ratio engine extensively adopts board plug type distortion device, and this type test unit reaches the requirement of 3 times of engine diameters in order to guarantee plate range observation cross section, need to possess the length of the engine intake diameter more than 5 times.For large bypass ratio engine, adopt board plug type distortion device to implement certain difficulty.Because more than 1.5m, then required inlet distortion equipment axial dimension will reach about 8 meters large bypass ratio engine inlets diameter usually, the stand hoisting difficulty is large, and the transformation cycle is long.Simultaneously, because large bypass ratio engine diameters is large, adopt its safety problem of net formula distortion device also extremely outstanding.
The utility model content
The purpose of this utility model is in order to realize that security is good, length is little, distortion index is adjustable, and the spy provides a kind of large bypass ratio engine with net formula distortion device.
The utility model provides a kind of large bypass ratio engine net formula distortion device, it is characterized in that: described large bypass ratio engine net formula distortion device, comprise reducer 1, distortion assembly 2, measuring channel 3, testing conduit 4, paste net 5, base net 6, skeleton 7 and center fiaring cone 8;
Wherein: reducer 1 front end face is connected with the engine pedestal air intake duct, and rear end face is bolted with distortion assembly 2; With bolts between distortion assembly 2 and the measuring channel 3;
Testing conduit 4 one ends are connected with engine by bolt, and the other end is connected with measuring channel 3 by socket, are used for installation testing equipment.Be provided with testing sensor in testing conduit 4 positions and install, dismantle interface.The connected mode of socket type has guaranteed to flexibly connect between stand air intake duct and the fancase, and with packoff, can change different test sections according to the experimental test project, and is easy to operate.
Pasting net 5 is one group of semicircle net that specification is different, for generation of inlet distortion, requires to select the subsides net of corresponding construction parameter according to distortion index; Base net 6 is 360 ° of the whole networks, is used for support sticker net 5, guarantees to paste web frame intensity as the support frame that pastes net; Skeleton 7 is eight support plate and the outer shroud welded structures that adopt standard Airfoil Design profile, is used for supporting base net 6 and pastes net 5, and satisfy the pneumatic design requirement; Center fiaring cone 8 is used for pasting the fixing of net 5, base net 6, skeleton 7, and good pneumatic profile is provided.Subsides net 5, base net 6 are bolted on the outer shroud of skeleton 7, and the centre compresses with center fiaring cone 8, guarantees the structural strength of distortion device;
Need in the process of the test to produce different distortion indexes and change distortion during assembly 2, pull down bolt, the assembly 2 that will distort separates with reducer 1 and measuring channel 3, and can realize.This version has been simplified substitute mode greatly, has shortened the cycle of test.
Described center fiaring cone 8 adopts oval water conservancy diversion profile.
The design profile that support plate adopts standard aerofoil profile geometric ratio to amplify; Distortion is pasted same cross section, net place accumulative total blockage ratio and is no more than 20% in the distortion assembly, and all the other cross sectional occlusion ratios are no more than 5%.The blockage ratio computing method are: blockage ratio=maximum front face area/gas channel area X100%.
Gas channel length is for being not more than 2 times of engine direct electrical path length, and the assembly 2 that namely distorts is not more than 2 times of engine diameters distances apart from testing section.
Advantage of the present utility model:
Large bypass ratio engine described in the utility model net formula distortion device, be the sectional type detachable structure, its length is suitable with the engine intake diameter, satisfy stand to the restriction of device length, security is good, length is little, distortion index is adjustable, has ensured to greatest extent the safety of complete machine, the development of the engine that made smooth advances, the utility model has reduced the complete machine inlet distortion test period significantly, and warranty test is easy to operate simple.
Description of drawings
Below in conjunction with drawings and the embodiments the utility model is described in further detail:
Fig. 1 is the large bypass ratio engine charge distortion of net formula device concrete structure figure;
Fig. 2 is the large bypass ratio engine charge distortion of net formula device right view;
Fig. 3 is distortion device skeleton support plate sectional view;
Fig. 4 is for pasting net and base net outer rim fixed form enlarged drawing;
Fig. 5 is base net structure enlarged drawing.
Embodiment
Embodiment 1
Present embodiment provides a kind of large bypass ratio engine net formula distortion device, it is characterized in that: described large bypass ratio engine net formula distortion device, comprise reducer 1, distortion assembly 2, measuring channel 3, testing conduit 4, paste net 5, base net 6, skeleton 7 and center fiaring cone 8;
Wherein: reducer 1 front end face is connected with the engine pedestal air intake duct, and rear end face is bolted with distortion assembly 2; With bolts between distortion assembly 2 and the measuring channel 3;
Testing conduit 4 one ends are connected with engine by bolt, and the other end is connected with measuring channel 3 by socket, are used for installation testing equipment.Be provided with testing sensor in testing conduit 4 positions and install, dismantle interface.The connected mode of socket type has guaranteed to flexibly connect between stand air intake duct and the fancase, and with packoff, can change different test sections according to the experimental test project, and is easy to operate.
Pasting net 5 is one group of semicircle net that specification is different, for generation of inlet distortion, requires to select the subsides net of corresponding construction parameter according to distortion index; Base net 6 is 360 ° of the whole networks, is used for support sticker net 5, guarantees to paste web frame intensity as the support frame that pastes net; Skeleton 7 is eight support plate and the outer shroud welded structures that adopt standard Airfoil Design profile, is used for supporting base net 6 and pastes net 5, and satisfy the pneumatic design requirement; Center fiaring cone 8 is used for pasting the fixing of net 5, base net 6, skeleton 7, and good pneumatic profile is provided.Subsides net 5, base net 6 are bolted on the outer shroud of skeleton 7, and the centre compresses with center fiaring cone 8, guarantees the structural strength of distortion device;
Need in the process of the test to produce different distortion indexes and change distortion during assembly 2, pull down bolt, the assembly 2 that will distort separates with reducer 1 and measuring channel 3, and can realize.This version has been simplified substitute mode greatly, has shortened the cycle of test.
Described center fiaring cone 8 adopts oval water conservancy diversion profile.
The design profile that support plate adopts standard aerofoil profile geometric ratio to amplify; Distortion is pasted same cross section, net place accumulative total blockage ratio and is no more than 20% in the distortion assembly, and all the other cross sectional occlusion ratios are no more than 5%.The blockage ratio computing method are: blockage ratio=maximum front face area/gas channel area X100%.
Gas channel length is for being not more than 2 times of engine direct electrical path length, and the assembly 2 that namely distorts is not more than 2 times of engine diameters distances apart from testing section.
Embodiment 2
Present embodiment provides a kind of large bypass ratio engine net formula distortion device, it is characterized in that: described large bypass ratio engine net formula distortion device, comprise reducer 1, distortion assembly 2, measuring channel 3, testing conduit 4, paste net 5, base net 6, skeleton 7 and center fiaring cone 8;
Wherein: reducer 1 front end face is connected with the engine pedestal air intake duct, and rear end face is bolted with distortion assembly 2; With bolts between distortion assembly 2 and the measuring channel 3;
Testing conduit 4 one ends are connected with engine by bolt, and the other end is connected with measuring channel 3 by socket, are used for installation testing equipment.Be provided with testing sensor in testing conduit 4 positions and install, dismantle interface.The connected mode of socket type has guaranteed to flexibly connect between stand air intake duct and the fancase, and with packoff, can change different test sections according to the experimental test project, and is easy to operate.
Pasting net 5 is one group of semicircle net that specification is different, for generation of inlet distortion, requires to select the subsides net of corresponding construction parameter according to distortion index; Base net 6 is 360 ° of the whole networks, is used for support sticker net 5, guarantees to paste web frame intensity as the support frame that pastes net; Skeleton 7 is eight support plate and the outer shroud welded structures that adopt standard Airfoil Design profile, is used for supporting base net 6 and pastes net 5, and satisfy the pneumatic design requirement; Center fiaring cone 8 is used for pasting the fixing of net 5, base net 6, skeleton 7, and good pneumatic profile is provided.Subsides net 5, base net 6 are bolted on the outer shroud of skeleton 7, and the centre compresses with center fiaring cone 8, guarantees the structural strength of distortion device;
Need in the process of the test to produce different distortion indexes and change distortion during assembly 2, pull down bolt, the assembly 2 that will distort separates with reducer 1 and measuring channel 3, and can realize.This version has been simplified substitute mode greatly, has shortened the cycle of test.
The design profile that support plate adopts standard aerofoil profile geometric ratio to amplify; Distortion is pasted same cross section, net place accumulative total blockage ratio and is no more than 20% in the distortion assembly, and all the other cross sectional occlusion ratios are no more than 5%.The blockage ratio computing method are: blockage ratio=maximum front face area/gas channel area X100%.
Claims (2)
1. a large bypass ratio engine is with net formula distortion device, it is characterized in that: described large bypass ratio engine net formula distortion device, comprise reducer (1), distortion assembly (2), measuring channel (3), testing conduit (4), paste net (5), base net (6), skeleton (7) and center fiaring cone (8);
Wherein: reducer (1) front end face is connected with the engine pedestal air intake duct, and rear end face is bolted with distortion assembly (2); With bolts between distortion assembly (2) and the measuring channel (3); Testing conduit (4) one ends are connected with engine by bolt, and the other end is connected with measuring channel (3) by socket, are used for installation testing equipment; Be provided with testing sensor in testing conduit (4) position and install, dismantle interface; The connected mode of socket type has guaranteed to flexibly connect between stand air intake duct and the fancase, and with packoff;
Pasting net (5) is one group of semicircle net that specification is different, for generation of inlet distortion, requires to select the subsides net of corresponding construction parameter according to distortion index; Base net (6) is 360 ° of the whole networks, is used for support sticker net (5), guarantees to paste web frame intensity as the support frame that pastes net; Skeleton (7) is eight support plate and the outer shroud welded structures that adopt standard Airfoil Design profile, is used for supporting base net (6) and pastes net (5), and satisfy the pneumatic design requirement; Center fiaring cone (8) be used for to paste the fixing of net (5), base net (6), skeleton (7), and good pneumatic profile is provided; Subsides net (5), base net (6) are bolted on the outer shroud of skeleton (7), and the centre compresses with center fiaring cone (8), guarantee the structural strength of distortion device.
2. according to large bypass ratio engine claimed in claim 1 net formula distortion device, it is characterized in that: described center fiaring cone (8) adopts oval water conservancy diversion profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188858 CN203249769U (en) | 2013-04-16 | 2013-04-16 | Net-type distortion device used for high-bypass ratio engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188858 CN203249769U (en) | 2013-04-16 | 2013-04-16 | Net-type distortion device used for high-bypass ratio engine |
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| Publication Number | Publication Date |
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| CN203249769U true CN203249769U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320188858 Withdrawn - After Issue CN203249769U (en) | 2013-04-16 | 2013-04-16 | Net-type distortion device used for high-bypass ratio engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234756A (en) * | 2013-04-16 | 2013-08-07 | 中国航空工业集团公司沈阳发动机设计研究所 | Net type distortion device for large-bypass-ratio engines |
| CN103823921A (en) * | 2013-12-05 | 2014-05-28 | 中国航空工业集团公司沈阳发动机设计研究所 | Separate-type nozzle design method for big-bypass-ratio engines |
| CN106289784A (en) * | 2016-08-02 | 2017-01-04 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of inlet distortion stagnation pressure rake structure |
| CN112268709A (en) * | 2020-10-15 | 2021-01-26 | 厦门大学 | Design method of aircraft engine dynamic pressure distortion generator based on conical cavity |
-
2013
- 2013-04-16 CN CN 201320188858 patent/CN203249769U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234756A (en) * | 2013-04-16 | 2013-08-07 | 中国航空工业集团公司沈阳发动机设计研究所 | Net type distortion device for large-bypass-ratio engines |
| CN103234756B (en) * | 2013-04-16 | 2015-09-30 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of large bypass ratio engine net formula distortion device |
| CN103823921A (en) * | 2013-12-05 | 2014-05-28 | 中国航空工业集团公司沈阳发动机设计研究所 | Separate-type nozzle design method for big-bypass-ratio engines |
| CN103823921B (en) * | 2013-12-05 | 2019-02-19 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of large-bypass-ratio engine split Nozzle Design method |
| CN106289784A (en) * | 2016-08-02 | 2017-01-04 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of inlet distortion stagnation pressure rake structure |
| CN112268709A (en) * | 2020-10-15 | 2021-01-26 | 厦门大学 | Design method of aircraft engine dynamic pressure distortion generator based on conical cavity |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131023 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |