A kind of internal combustion wave rotor with movable end cover and sealing method thereof

Abstract

The invention provides an internal combustion wave rotor with a movable end cover and a sealing method, and belongs to the technical field of aero-engine combustion chamber sealing. An internal combustion wave rotor movable end cover sealing device mainly comprises the wave rotor, a fixed end cover, the movable end cover and other structures. The fixed end cover and a positioning assembly arranged on the fixed end cover achieve a function of limiting the stroke of the movable end cover. Under the action of a spring on the positioning assembly, the movable end cover always makes contact with a friction piece on a wave rotor channel, and radial and circumferential sealing of the internal combustion wave rotor is achieved. Movement of the movable end cover can contain system heat expansion, and the effect that the rotor is not stuck is ensured. By adopting the internal combustion wave rotor movable end cover sealing device, the performance loss and the working instability caused by leakage in the working process of the internal combustion wave rotor can be greatly reduced; and meanwhile, the sealing method can be used for sealing of other rotating systems in the aviation field.

Description

Technical field [0001] The invention belongs to the field of aeroengines, in particular to a sealing method for a movable end cover of an internal combustion wave rotor. Background technique [0002] The internal combustion wave rotor is a new type of unsteady combustion device, which has the potential advantage of greatly improving the performance of the propulsion system. However, because the main part of the wave rotor is rotating during the working process, the leakage problem becomes its inherent technical obstacle. Moreover, its working process usually adopts the rapid pressurized combustion mode of knock or deflagration. The pressure generated during the combustion process is very high, which particularly highlights the impact of leakage. Data show that ABB's internal combustion wave rotor project was forced to terminate in the 1960s, and the impact of leakage is an important reason. [0003] From the above analysis, it can be known that in order to carry out research on th...

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Problems solved by technology

[0004] Purpose of the invention: Based on the deficiencies of the prior art, the present invention provides a sealing method for the moving end cover of the internal combustion wave rotor, which is used to solve the poor sealing effect between the end face and the end cover of the internal combustion wave rotor and the technology that is likely to cause bad consequences of rotor jamming question

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