An active fusing device, method and aero-engine
An aero-engine and fusing technology, applied in the directions of engine components, engine lubrication, machine/engine, etc., can solve the problems of reducing unbalanced load, high limit load, increasing the difficulty and cost of engine design, and achieving enhanced sensitivity and Accuracy, reduced load, and the effect of avoiding delayed fusing
Active Publication Date: 2017-06-06
AECC COMML AIRCRAFT ENGINE CO LTD
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Problems solved by technology
[0006] 2) The existing fusing design adopts a purely mechanical fusing method, which will cause the active fusing part to fail immediately when the unbalanced load caused by some fan blades falling off is slightly lower than the critical failure threshold, resulting in Larger and longer lasting unbalanced loads
[0007] To sum up, the existing fusing design method is not sensitive to the load near the critical failure threshold, and cannot immediately make the fusing part work and reduce the unbalanced load. High, increasing the design difficulty and cost of the engine
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[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0031] In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rathe...
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The invention relates to a device and a method for active fusing, and an aero-engine. The active fusing device comprises a signal detection transmission mechanism and an execution mechanism. The signal detection transmission mechanism is electrically connected with the execution mechanism. The execution mechanism is arranged on a fusing position. The signal detection transmission mechanism transmits detected signal to the execution mechanism. The execution mechanism performs operation for accelerating the fusing position to lose efficacy. The device combines the signal detection transmission mechanism with the execution mechanism. Through the signal detection transmission mechanism detecting signals, when detected signals are larger than or equal to a critical failure threshold value, or when the detected signals are slightly lower than the critical failure threshold value, the device can acts on the fusing position through the execution mechanism, and accelerates failure of the fusing position through the execution mechanism, so as to improve sensitiveness and accuracy of fusing and prevent delayed fusing phenomenon which appears around the critical failure threshold value.
Description
technical field [0001] The invention relates to the field of aero-engines, in particular to an active fusing device, method and aero-engine. Background technique [0002] At present, the bypass ratio of civil aeroengines is getting higher and higher, and the diameter of fans is getting larger and larger. During the operation of an aero-engine, it is unavoidable that the fan blades fly out due to factors such as inhalation of foreign objects or blade fatigue. failure, leading to the unintentional separation of the aeroengine from the aircraft, which is a hazardous accident consequence. [0003] In order to reduce the occurrence of FBO (FanBlade Out, fan blade flying out) in various components of the aeroengine (mainly the installation system, bearings and other components), it refers to the fan blade flying out of the fan caused by the inhalation of foreign objects or blade fatigue during the operation of the engine. Disc flying out) event, usually adopts fusing design, tha...
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IPC IPC(8): F02C7/00F01D21/00F01D21/14F01D25/16F02C7/06
Inventor 杨筱璐郑李鹏侯乃先翁依柳
Owner AECC COMML AIRCRAFT ENGINE CO LTD