Combustion chamber with adjustable diffuser
A diffuser and combustion chamber technology, applied in the field of aero-engine combustion chamber structure, can solve problems such as increasing research costs and resources, and achieve the effects of avoiding integrated processing, shortening processing cycles, and saving economic costs
Active Publication Date: 2022-03-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
For different diffuser schemes, the traditional combustion chamber test piece requires a large number of repeated tests, which increases research costs and resources to a certain extent
Method used
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[0024] In order to clearly illustrate the technical characteristics of this patent, the present patent will be described in detail below by way of reference to the accompanying drawings.
[0025] According to the present invention Figure 1-3 As shown, the combustion chamber is mainly composed of a diffuser 1, a casing 8, a flame cylinder 9, and a swirler 10. This is the basic structure of the combustion chamber, and the expansion control panel 2 is designed with gear 6 and the rack 7. The gear 6 is mounted with a base 13, with a long strip groove 14 on the diffuser adjustment panel 2, the rack 7 and the diffuser adjustment plate 2 are integrated, the rotary gear 6 drives the rack 7 to make the expansion The armor adjustment board 2 moves, the bottom of the diffuser adjustment board 2 has a threaded blind hole 17, and the push rod 4 can be threaded with the diffuser adjustment plate 2, and a threaded hole 11 is also provided at some place in the axis of the diffuser 1. The bottom e...
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The invention discloses a combustion chamber with an adjustable diffuser, and relates to the field of aero-engine combustion chamber structures. Under the condition that installation of the whole combustion chamber and normal work of other parts are not affected, the diffuser can be deeply researched by controlling the diffuser adjusting plate, repeated machining of a test piece is reduced as much as possible, and meanwhile the diffuser adjusting plate has the advantages of being simple in structure, high in reliability and low in consumption. The combustion chamber comprises a diffuser and a casing which are fixedly connected, and a diffuser adjusting plate detachably connected with the diffuser is arranged in the diffuser; an axial adjusting mechanism is arranged in the diffuser adjusting plate, and the axial position of the diffuser adjusting plate in the diffuser is changed through the axial adjusting mechanism. Integrated machining of multiple diffuser model test pieces is avoided, the machining period can be greatly shortened, and the economic cost can be greatly saved.
Description
Technical field [0001] The present invention relates to the field of aerospace engine combustion chamber structures, and more particularly to a combustion chamber that can be adjusted by a diffuser. Background technique [0002] At present, when designing a aviation engine combustion chamber, a diffuser exit and a flame bar will tend to provide a diffuser, and the inlet airflow flow field of the aeroengine combustion chamber is mainly determined by the performance of the expansion. The main function of the combustion chamber expansion is to reduce the speed of the imported gas flow of the combustion chamber under the smallest total pressure loss and the maximum static pressure recovery. With the increase of aerospace carrier, as well as combustion chamber performance indicators Improvement, new requirements for the performance of the expansion, need to reduce the total pressure loss on the basis of as much as possible, from the designer's perspective, the ideal expansion should b...
Claims
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IPC IPC(8): F23R3/04F23R3/38
CPCF23R3/04F23R3/38
Inventor 汤朝伟金武李建中潘玮姚倩
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS