Engine intake anti-icing system
An anti-icing system and air intake technology, applied in machines/engines, mechanical equipment, jet propulsion devices, etc., can solve problems such as damaged structures, uncertain heat exchange efficiency, and inability to effectively prevent icing
Active Publication Date: 2017-08-25
AECC COMML AIRCRAFT ENGINE CO LTD
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Problems solved by technology
In this structure, the flow direction and velocity of the hot air entering the heat exchange channel and the distribution of the hot air in the heat exchange channel cannot be controlled, and the amount of hot air drawn from the compressor cannot be controlled, which leads to Uncertain thermal efficiency
There are cases where parts of the structure in the intake duct are overheated while other parts are underheated
Method used
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[0036] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that what is shown in the drawings is only a preferred embodiment of the present invention, which is not intended to limit the scope of the present invention. Those skilled in the art can make various obvious modifications, variations and equivalent replacements to the present invention on the basis of the embodiments shown in the drawings, all of which fall within the protection scope of the present invention.
[0037]In this article, the term "upstream", "downstream" and other terms indicating orientation are based on the flow direction of the air sucked by the compressor of the engine,
[0038] figure 1 A perspective view of an aeroengine 1 is shown. The aeroengine 1 has a nacelle 10 and a pylon 20 . Through the hanger 20, the aero-engine 1 can be connected to an appropriate position such as the wing of an airplane....
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An engine air inlet anti-icing system includes a heat exchange channel, an air induction pipe, an annular air distribution pipe and an exhaust pipe. The annular air distribution pipe is arranged in the heat exchange passage, and an opening is arranged on the annular air distribution pipe, and an end of the air induction pipe close to the inlet of the air inlet is connected with the opening. Wherein, the annular air distribution pipe has a throat and a lip, and the lip extends along the inlet direction of the air inlet, and an adjustable guide vane is installed on the lip, and the adjustable guide vane is connected with the center of the air intake. The surface is at a certain angle, and the angle of the guide vane cascade is adjusted by the driving mechanism. The engine air inlet anti-icing system of the invention can control the flow and flow direction of hot air according to different anti-icing conditions, so as to realize the best anti-icing effect under different anti-icing conditions and different positions of the air inlet.
Description
technical field [0001] The invention relates to an air intake anti-icing system for an engine. More specifically, it relates to a hot gas anti-icing system for an air intake of an aeroengine. Background technique [0002] When an aircraft is flying in icing conditions, icing may occur on the fuselage. In particular, icing is more likely to occur in the air intake of an aeroengine due to suction. The icing phenomenon of the air inlet of the aeroengine is the most dangerous situation in the icing phenomenon of the aircraft. Icing in the air inlet will change the cross-sectional shape of the air inlet, causing the aerodynamic shape of the air inlet to be destroyed, thereby reducing the thrust of the aeroengine and increasing the load of the aeroengine during flight. What's more dangerous is that the ice layer accumulated in the air intake may fall off and enter the engine with the sucked air, hitting the fan blades at a very high speed. In this way, the compressor of the ae...
Claims
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IPC IPC(8): F02C7/047F02C7/057
Inventor 刘永张正贾文强
Owner AECC COMML AIRCRAFT ENGINE CO LTD