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A Binary Convergent Nozzle

A nozzle and quantity technology, which is applied in the design of aero-engine binary convergent nozzles, can solve the problems of complex mechanism, unfavorable maintenance, and maintaining a high flow coefficient in a high state, and achieves a high flow coefficient, simple and reliable structure. Effect

Active Publication Date: 2017-11-03
AECC SHENYANG ENGINE RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] Binary converging nozzles have broad application prospects in aero-engines. At present, the adjustment of the throat area is mainly realized by the rotation of the converging regulating plate. In this process, the convergence angle of the converging section will change accordingly, thus affecting the nozzle's The flow coefficient makes it difficult to maintain the flow coefficient in a high state
Most of the existing binary nozzle convergent section control mechanisms are rocker arm plus connecting rod or adjusting ring plus connecting rod. This kind of mechanism is complicated, the number of parts is large, and the installation is complicated, which is not conducive to maintenance.

Method used

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  • A Binary Convergent Nozzle
  • A Binary Convergent Nozzle
  • A Binary Convergent Nozzle

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Embodiment Construction

[0013] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same elements unless otherwise indicated.

[0014] Such as figure 1 with figure 2 As shown, a binary converging nozzle provided by the present invention includes a cylinder body 1, a side wall 2, a fixed plate 3 and a sliding plate 4, and is characterized in that: the cylinder body 1 has a quantity of one piece, and its inlet is Circular, the outlet is square, with a uniform transition in the middle; the number of the side walls 2 is 2 pieces, which are symmetrically arranged on the left and right sides of the nozzle, and are fixedly connected to the cylinder 1 by bolts; the number of the fixing plates 3 is 2 pieces , arranged symmetrically on the upper and lower sides of the nozzle, and the upper and lower fixed plates...

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Abstract

The invention relates to the field of aero-engine design, in particular to the design of a binary converging nozzle of an aero-engine, which is characterized in that it comprises a cylinder body (1), a side wall (2), a fixed plate (3), and a sliding plate (4) , wherein the sliding plate (4) can slide back and forth along the fixed plate (3), thereby realizing the adjustment of the throat area. The invention has the advantages of simple structure and maintaining a high flow coefficient while realizing adjustment of the nozzle throat area, and can be applied to the design of binary nozzles of aero-engines, and is also applicable to aero-engines or aerospace engines with similar functions design field.

Description

technical field [0001] The invention relates to the field of aero-engine design, in particular to the design of a binary convergent nozzle of an aero-engine. Background technique [0002] Binary converging nozzles have broad application prospects in aero-engines. At present, the adjustment of the throat area is mainly realized by the rotation of the converging regulating plate. In this process, the convergence angle of the converging section will change accordingly, thus affecting the nozzle's The flow coefficient makes it difficult to maintain the flow coefficient in a high state. Most of the existing control mechanisms for the convergent section of binary nozzles are rocker arms plus connecting rods or adjusting rings plus connecting rods. This mechanism is complicated, the number of parts is large, and the installation is complicated, which is not conducive to maintenance. Contents of the invention [0003] The purpose of the present invention is to provide a binary co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K1/09
Inventor 宁怀松石岩巩亚南
Owner AECC SHENYANG ENGINE RES INST
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