A spring compensation structure
A technology of spring compensation and compensation mechanism, which is applied in the aviation field, can solve the problem that the flow channel of the expansion section cannot be completely closed, and achieve the effect of reducing the risk of gas leakage
Active Publication Date: 2021-04-20
AECC SICHUAN GAS TURBINE RES INST
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Problems solved by technology
[0003] The ratio of the maximum area to the minimum area of the nozzle outlet of an advanced aero-engine reaches 6 or even greater, and the conventional adjustment method of the expansion section of the axisymmetric retraction and expansion nozzle cannot guarantee that the flow channel of the expansion section will always remain completely closed under a wide adjustment range
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[0024]The present invention will be further described below with reference to the accompanying drawings and examples:
[0025]In the prior art, the expansion section adjustment sheet 1 intersects the expanded segment sealing sheet 2, and the expansion section adjustment sheet 1 and the expansion segment segment 2 have a large slit, fromfigure 1 It can be seen that due to the presence of the above gap, the high-temperature gas of the nozzle has a large part of the leak, resulting in loss of thrust, and causes abrasion to the engine or aircraft structure, resulting in huge loss.
[0026]The present invention designs a spring compensation structure with a compensation section of the expansion segment, such asfigure 2 As shown, spring 3; spring sleeve 4; spring spacer 5; tie rod 6; expansion segment adjustment sheet compensation section 7; compensation mechanism card 8; spring pin 9; spring gasket 10; pin 11; ball 12 ; Spacer 13; auxiliary pin 14; open pin 15; other components 16.
[0027]In the...
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The invention belongs to the aviation field and relates to a spring compensation structure. The spring compensating structure includes: the flow channel of the expanding section of the nozzle formed by the gap between the expanding section regulating piece and the expanding section sealing piece, and the spring compensating structure also includes: a joint shaft with elastic force and mechanical limit, two parts A pull rod and two pieces of expansion section adjustment piece compensation section; the joint shaft is connected to one end of the two pieces of pull rod respectively, and the two pieces of expansion section adjustment piece compensation section are respectively connected to the other end of the two pieces of pull rod; the expansion section The compensation section of the adjustment piece is movably installed on the adjustment piece of the expansion section; wherein, when the two pull rods do not meet the mechanical limit requirements of the joint shaft, the expansion The segment adjustment segment compensation segment is close to the expansion segment adjustment segment, and when the two pull rods reach the mechanical limit requirement of the joint shaft, the two pull rods gradually pull the expansion segment adjustment segment compensation segment. The embodiment of the present invention ensures that the flow channel of the expansion section is always completely closed under a wide adjustment range.
Description
Technical field[0001]The present invention belongs to the field of aviation involves a spring compensation structure.Background technique[0002]With the continuous development of aviation technology, the working block line of the aviation engine is growing, and the nozzle is one of the important components of the aerospace engine. Its working status is wide, and the integrity of nozzle flow path is in order to work properly. It must be resolved first. The integrity of the flow path is to prevent high temperature gas disclosure to ensure efficient use of engine airflow.[0003]Advanced aero-engine nozzle exit maximum area and minimum area ratio of 6 or even larger, the regulation of conventional axis symmetrical expansion tube expansion segments cannot be guaranteed to maintain the expansion section until the expansion section is maintained completely closed at a wide regulatory range.Inventive content[0004]It is an object of the present invention to ensure that the expanded segment flo...
Claims
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IPC IPC(8): F02K1/78
Inventor 赵春梅王恒廖华琳邓庆晃朱川任亚强刘立立
Owner AECC SICHUAN GAS TURBINE RES INST