CN108757180A - Engine Anti-Ice rotates calotte - Google Patents
Engine Anti-Ice rotates calotte Download PDFInfo
- Publication number
- CN108757180A CN108757180A CN201810550479.4A CN201810550479A CN108757180A CN 108757180 A CN108757180 A CN 108757180A CN 201810550479 A CN201810550479 A CN 201810550479A CN 108757180 A CN108757180 A CN 108757180A
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- CN
- China
- Prior art keywords
- calotte
- rotation
- water hole
- icing
- rotates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
Abstract
The invention discloses a kind of Engine Anti-Ices to rotate calotte, it is passed through anti-icing gas inside rotation calotte, the tip of rotation calotte offers first and removes water hole, first is identical as the rotation axial direction of calotte except the opening direction in water hole, several second, which are offered, in the end of rotation calotte removes water hole, several second successively decrease except the angle between the opening direction and rotation calotte axis in water hole along the radius augment direction of rotation calotte, and the second angle removed between the opening direction in water hole and the axial direction of the rotation calotte is 75-105 degree.The present invention can make full use of the characteristic of calotte rotation, and uniformly anti-icing to calotte realization by the pneumatic principle of anti-icing gas, anti-icing effect is preferable, and anti-icing gas can quote Cryogenic air, so as to efficiently reduce influence of the anti-icing bleed to engine performance.
Description
Technical field
The present invention relates to aero-engine technology fields, and in particular to a kind of Engine Anti-Ice rotation calotte.
Background technology
The icing of aero-engine be mainly subcooled water droplet, ice crystal and sleet present in cold atmospheric cloud layer and
Engine intake component caused by the weather conditions such as snowfall freezes.Accumulated ice can generate pole to the performance and job stability of engine
Big harm, therefore, it is necessary to carry out anti-icing design for engine intake component.The existing anti-icing rotation calotte of aero-engine
Be to use double-layer structure, form hot gas path in centre, open jet hole on inner wall, by anti-icing hot gas be introduced into hot gas path into
Row is anti-icing, but this mode cannot solve the problems, such as that super-cooling waterdrop is in calotte outside deposition in cold air, if subcooled water
Drop is largely deposited on calotte outer surface, and calotte icing can not be effectively prevented using anti-icing hot gas is passed through in hot gas path.
Invention content
To solve the problems mentioned above in the background art, in order to solve the supercooling of aero-engine turncap cover outer surface
The problem of droplet deposition is to influence engine performance.The present invention provides a kind of Engine Anti-Ices to rotate calotte, the rotation
Anti-icing gas is passed through inside calotte, the tip of the rotation calotte offers first and removes water hole, and described first removes the opening side in water hole
To identical as the rotation axial direction of calotte, offer several second in the end of the rotation calotte and remove water hole, it is several
Described second increases except the angle between the opening direction and the rotation calotte axis in water hole along the radius of the rotation calotte
Direction is successively decreased, and the described second angle removed between the opening direction in water hole and the axial direction of the rotation calotte is 75-105
Degree.
Preferably, several described second except water hole in several annular spreads on the end face of the rotation calotte, and position
In described second in adjacent annular except water hole is interspersed in the end of the rotation calotte.
Preferably, the several described second maximum distances removed between water hole and the rotation calotte axis are the turncap
The 1/3-5/12 of cover maximum radius.
Preferably, described second except the angle between the opening direction and the rotation calotte axis in water hole is along the rotation
The radius augment direction of calotte successively decreases.
Preferably, the number that described second close to the rotation calotte tip removes water hole is at least two.
Preferably, the described second number for removing water hole is incremented by along the rotation calotte radius augment direction.
Preferably, described first water hole and second is removed except the diameter in water hole is 3-4mm.
A kind of Engine Anti-Ice provided in an embodiment of the present invention rotates calotte, and first is offered on engine rotation calotte
Except water hole is removed in water hole and several second, the opening angle range by removing water hole by second is set as 75-105 degree, in aircraft flight
In the process, second except water hole is by anti-icing gas extraction rotation calotte, and is matched with supercooled air, is formed on the surface of rotation calotte
Air film, so that the water droplet in supercooled air cannot be deposited on the outer surface of rotation calotte, and then it is anti-to reach rotation calotte
The effect of ice.Calotte ice prevention structure is rotated in compared with the prior art, anti-icing rotation calotte provided in an embodiment of the present invention can
The characteristic for making full use of calotte to rotate, uniformly anti-icing to calotte realization by the pneumatic principle of anti-icing gas, anti-icing effect is preferable, and
And anti-icing gas can quote Cryogenic air, so as to efficiently reduce influence of the anti-icing bleed to engine performance.
Description of the drawings
Fig. 1 is the structural schematic diagram for the rotation calotte ice prevention structure that one embodiment of the invention provides；
Fig. 2 is the distribution schematic diagram in the rotation calotte dewatering surface hole that one embodiment of the invention provides；
Fig. 3 is the pneumatic anti-icing schematic diagram that one embodiment of the invention provides.
Reference numeral：
1, first water hole is removed；2, second water hole is removed；3, calotte is rotated.
Specific implementation mode
To keep the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated dress
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as protecting the present invention
The limitation of range is not understood to indicate or imply relatively important in addition, term " first ", " second " are used for description purposes only
Property.
The embodiment of the present invention provides a kind of Engine Anti-Ice rotation calotte, for aero-engine in high-altitude flight, by
There are engine intakes caused by the weather conditions such as subcooled water droplet, ice crystal and sleet and snowfall in cold atmospheric cloud layer
Component freezes, to generate greatly harm to the performance and job stability of aero-engine.
Fig. 1 is the structural schematic diagram for the rotation calotte ice prevention structure that one embodiment of the invention provides.As shown in Figure 1, starting
The anti-icing rotation calotte of machine includes being arranged to remove water hole 1 and several settings in 3 end of rotation calotte the first of 3 tip of rotation calotte
The second apopore 2, wherein first except water hole 1 opening direction with rotate the axial direction of calotte 3 it is identical, several second remove
Angle between the opening direction and rotation 3 axis of calotte in water hole 2 successively decreases along the radius augment direction of rotation calotte 3, and second removes
Angle between the opening direction in water hole 2 and the axial direction for rotating calotte 3 is 75-105 degree.
Second except the angle between the opening direction and rotation 3 axis of calotte in water hole 2 is along the radius increase side of rotation calotte 3
To successively decreasing.As shown in Figure 1, second except water hole 2 and rotate 3 axis of calotte between angle α along rotation calotte 3 radius increase
Big direction is successively decreased, and second at rotation calotte 3 front end is larger except 2 opening angle of water hole, with first except water hole 1 matches can
It prevents super-cooling waterdrop from directly impacting the tip of rotation calotte 3, rotates the on the end face of calotte 3 second opening angle for removing water hole 2
It is smaller, one layer of protection air film can be formed on the surface of rotation calotte 3 to prevent super-cooling waterdrop heavy on the surface of rotation calotte 3
Product.
In the embodiment of the present invention, rotates and be passed through the anti-icing gas with certain pressure, engine working process inside calotte 3
In, rotation calotte 3 be in rotation status, and anti-icing gas can prevent super-cooling waterdrop to rotation calotte 3 except being drawn from water hole 1 from first
Impact, anti-icing gas except drawing from water hole 2, while rotating calotte 3 and being in rotation status from second, due to the impact of supercooled air
With the rotation of rotation calotte 3, one layer of air film can be formed on the surface of rotation calotte 3, so as to prevent super-cooling waterdrop from revolving
Turn 3 surface of calotte deposition.
Illustratively, anti-icing gas is chosen as Cryogenic air, and during the work time, rotation calotte 3 is in contorted to engine
State, Cryogenic air is removed water hole 2 except water hole 1 and second from the first of the surface of rotation calotte 3 and is blown out with certain speed, in calotte
Surface forms air film, and super-cooling waterdrop can effectively be prevented to be deposited on 3 surface of rotation calotte, anti-icing to achieve the purpose that.
It is the distribution schematic diagram in the rotation calotte dewatering surface hole that one embodiment of the invention provides referring to Fig. 2, Fig. 2.Such as Fig. 2
Shown, in some optional embodiments, several described second remove water hole in several annular spreads in the end of the rotation calotte
On face, and described second in adjacent annular removes water hole and is interspersed in the end of the rotation calotte.Pass through second
Except this distribution mode in water hole 2, it can ensure to rotate calotte 3 in rotary course, anti-icing gas can be distributed evenly in rotation
On the surface for turning calotte 3, super-cooling waterdrop is caused to deposit since anti-icing qi leel cloth is less to prevent the spin-ended 3 surface somewhere of calotte that turns.
It should be noted that if dry be distributed on the end face of rotation calotte 3 in certain rule except water hole 2, to ensure to remove
Water hole 2 is uniformly distributed in as possible on the end face of rotation calotte 3, and in these optional embodiments, second is equal as possible except water hole 2
Even being distributed on the end face of rotation calotte 3 can ensure from second except the anti-icing gas blown out in water hole 2 can be covered preferably
The surface for rotating calotte 3 freezes to prevent super-cooling waterdrop from being deposited on its surface.Certainly, second remove water hole 2 distribution mode
It is not limited to above-mentioned distribution mode, can also be other distribution modes, for example, second is uniformly distributed in rotation except water hole 2
On the end face of calotte 3 or second except water hole 2 is close to the tip distribution comparatively dense of rotation calotte 3, and specific distribution mode exists
This is not construed as limiting.
In some optional embodiments, the several second maximum distances removed water hole 2 and rotated between 3 axis of calotte are rotation
Turn the 1/3-5/12 of calotte radius.When rotating 3 anti-icing work of calotte, inside be passed through the anti-icing gas with certain pressure,
It rotates and opens up second on the end face of calotte 3 except water hole 2 can make the pressure reduction of the 3 anti-icing gas in inside of rotation calotte, to which influence is anti-
Ice gas, except speed when being drawn from water hole 2, may make the 3 inside and outside air pressure of rotation calotte identical in some cases from second,
Cause 3 surface of rotation calotte that cannot form air film, loses anti-icing function.In the present embodiment, existed by removing the setting of water hole 2 by second
Within the scope of this, it can not only ensure that rotating 3 surface of calotte forms protection air film, additionally it is possible to make anti-icing gas that there is certain pressure
Power, to make rotation calotte 3 that there is good anti-icing effect.
In some optional embodiments, the number that water hole 2 is removed close to the second of 3 tip of rotation calotte is at least two.
For example, two second are removed in first around water hole 1 except water hole 2 can be symmetrically distributed, and coordinates with it and avoid super-cooling waterdrop
The directly tip of impact rotation calotte 3.
In order to ensure that the air film for rotating 3 surface of calotte is evenly distributed, second except the number in water hole 2 is along rotation 3 radius of calotte
Augment direction is incremented by, it is to be understood that and with the increase of rotation 3 radius of calotte, the area of outer surface also increases therewith, because
This needs more second except water hole 2 to ensure that the surface for rotating calotte 3 forms air film, it is preferable that first removes water hole 1 and second
Except the diameter in water hole 2 can be 3-4mm, to ensure that the 3 anti-icing gas in inside of rotation calotte has certain pressure, first removes water hole 2
With second except the diameter in water hole 3 can also be other numerical value or other ranges, as long as can ensure to rotate inside calotte 3
Anti-icing gas have certain pressure.
Referring to Fig. 3, cold air carry super-cooling waterdrop from rotation calotte 3 tip side blow, by first except water hole 1,
Second matches except the rotation in water hole 2 and rotation calotte 3, and cold air can make anti-icing gas be close to rotate the outer surface of calotte 3, to
One layer of air film is formed on the surface of rotation calotte 3, the super-cooling waterdrop so as to be effectively prevented in cold air is rotating calotte 3
Surface deposition, and then influence engine performance.
It is last it is to be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：It is still
Can be with technical scheme described in the above embodiments is modified, or which part technical characteristic is equally replaced
It changes；And these modifications or replacements, the essence for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
God and range.
Claims (7)
1. a kind of Engine Anti-Ice rotates calotte, it is passed through anti-icing gas inside the rotation calotte, which is characterized in that the turncap
The tip of cover offers first and removes water hole, the described first opening direction except water hole and the axial direction phase for rotating calotte
Together, several second are offered in the end of the rotation calotte and removes water hole, the several described second opening direction and institute except water hole
The angle stated between rotation calotte axis successively decreases along the radius augment direction of the rotation calotte, and described second removes the opening in water hole
Angle between direction and the axial direction of the rotation calotte is 75-105 degree.
2. Engine Anti-Ice according to claim 1 rotates calotte, which is characterized in that if several described second are in except water hole
Dry annular spread on the end face of the rotation calotte, and described second in adjacent annular except water hole be interspersed in
The end of the rotation calotte.
3. Engine Anti-Ice according to claim 2 rotates calotte, which is characterized in that several described second remove water hole and institute
State the 1/3-5/12 that the maximum distance between rotation calotte axis is the rotation calotte maximum radius.
4. Engine Anti-Ice according to claim 3 rotates calotte, which is characterized in that described second removes the opening side in water hole
Radius augment direction to the angle between the rotation calotte axis along the rotation calotte successively decreases.
5. Engine Anti-Ice according to claim 4 rotates calotte, which is characterized in that close to the rotation calotte tip
Described second number for removing water hole is at least two.
6. Engine Anti-Ice according to any one of claim 1 to 5 rotates calotte, which is characterized in that described second removes
The number in water hole is incremented by along the rotation calotte radius augment direction.
7. Engine Anti-Ice according to claim 6 rotates calotte, which is characterized in that described first removes except water hole and second
The diameter in water hole is 3-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810550479.4A CN108757180A (en) | 2018-05-31 | 2018-05-31 | Engine Anti-Ice rotates calotte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810550479.4A CN108757180A (en) | 2018-05-31 | 2018-05-31 | Engine Anti-Ice rotates calotte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757180A true CN108757180A (en) | 2018-11-06 |
Family
ID=64001476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810550479.4A Pending CN108757180A (en) | 2018-05-31 | 2018-05-31 | Engine Anti-Ice rotates calotte |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757180A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483469A (en) * | 2020-11-27 | 2021-03-12 | 中国航发沈阳发动机研究所 | Rectification extension plate anti-icing structure and aviation gas turbine engine |
| CN113090391A (en) * | 2021-05-11 | 2021-07-09 | 西北工业大学 | Cap cover anti-icing heat transfer structure with air film hole and front edge impact |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0436243A2 (en) * | 1989-12-29 | 1991-07-10 | The Boeing Company | Anti-icing system for aircraft |
| CN101962076A (en) * | 2010-09-15 | 2011-02-02 | 北京航空航天大学 | Gas film ice prevention structure of leading edge of nacelle of airplane |
| CN203476508U (en) * | 2013-08-21 | 2014-03-12 | 中国航空工业集团公司沈阳发动机设计研究所 | Anti-icing screw-plug assembly structure |
| CN203753413U (en) * | 2014-01-03 | 2014-08-06 | 中国航空工业集团公司沈阳发动机设计研究所 | Anti-icing heat conduction structure of rectifying cover hood at inlet of aviation engine |
| US20170008635A1 (en) * | 2015-07-07 | 2017-01-12 | The Boeing Company | Jet engine anti-icing and noise-attenuating air inlets |
| US20180087456A1 (en) * | 2016-09-28 | 2018-03-29 | Pratt & Whitney Canada Corp. | Anti-icing apparatus for a nose cone of a gas turbine engine |
-
2018
- 2018-05-31 CN CN201810550479.4A patent/CN108757180A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0436243A2 (en) * | 1989-12-29 | 1991-07-10 | The Boeing Company | Anti-icing system for aircraft |
| CN101962076A (en) * | 2010-09-15 | 2011-02-02 | 北京航空航天大学 | Gas film ice prevention structure of leading edge of nacelle of airplane |
| CN203476508U (en) * | 2013-08-21 | 2014-03-12 | 中国航空工业集团公司沈阳发动机设计研究所 | Anti-icing screw-plug assembly structure |
| CN203753413U (en) * | 2014-01-03 | 2014-08-06 | 中国航空工业集团公司沈阳发动机设计研究所 | Anti-icing heat conduction structure of rectifying cover hood at inlet of aviation engine |
| US20170008635A1 (en) * | 2015-07-07 | 2017-01-12 | The Boeing Company | Jet engine anti-icing and noise-attenuating air inlets |
| US20180087456A1 (en) * | 2016-09-28 | 2018-03-29 | Pratt & Whitney Canada Corp. | Anti-icing apparatus for a nose cone of a gas turbine engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483469A (en) * | 2020-11-27 | 2021-03-12 | 中国航发沈阳发动机研究所 | Rectification extension plate anti-icing structure and aviation gas turbine engine |
| CN113090391A (en) * | 2021-05-11 | 2021-07-09 | 西北工业大学 | Cap cover anti-icing heat transfer structure with air film hole and front edge impact |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20181106 |