Partition plate nozzle structure of pre-combustion chamber

A pre-combustion chamber and fuel nozzle technology, which is applied in the field of pre-chamber partition nozzle structure, can solve the problems that the partitions for injecting oxidant and fuel have not been used yet, so as to broaden the stable working range, ensure temperature uniformity, Effect of suppressing tangentially unstable combustion

Active Publication Date: 2022-03-11
BEIJING AEROSPACE PROPULSION INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the partitions in the pre-combustion chamber at home and abroad generally only circulate the fuel as the coolant, and the partitions that inject oxidant and fuel at the same time have not been used in the pre-combustion chamber.

Method used

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  • Partition plate nozzle structure of pre-combustion chamber
  • Partition plate nozzle structure of pre-combustion chamber
  • Partition plate nozzle structure of pre-combustion chamber

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Embodiment Construction

[0026] The present invention is described in conjunction with accompanying drawing.

[0027] like Figure 1~5 As shown, a pre-chamber partition nozzle of the present invention is mainly composed of an oxidizer nozzle 1, a fuel nozzle 2 and a bottom 3. Wherein, one end of the oxidant nozzle 1 protrudes into the fuel nozzle 2 and forms an annular gap 4 with the fuel nozzle 2 .

[0028] The partition sleeves 6 are evenly distributed in three rows along the circumferential direction on the panel 5 . The panel 5 and the partition sleeve 6 are integrally formed to form a bottom 3 . A fuel nozzle 2 is installed on the bottom 3 at the position where the baffle sleeve 6 is arranged;

[0029] The first base 3 is made of copper alloy material.

[0030] The width L1 of the baffle sleeve 6 is equal to the distance L2 between the centers of the through holes 7 of adjacent baffles.

[0031] The radius R of the arc at both ends of the partition sleeve 6 is half of the distance L2 between...

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Abstract

A pre-combustion chamber partition plate nozzle comprises an oxidizing agent nozzle, a fuel nozzle and a bottom. One end of the oxidant nozzle extends into the fuel nozzle and forms an annular gap with the fuel nozzle; a plurality of columns of partition plate sleeves are uniformly distributed on the panel along the circumferential direction; the panel and the partition plate sleeve are integrally formed to form a bottom; a fuel nozzle is mounted at the position, provided with the partition plate sleeve, of one bottom; longitudinal partition plate through holes are formed in the partition plate sleeve, and the partition plate through holes and the fuel nozzles are in one-to-one correspondence and are communicated with each other; a rotational flow hole is formed in the end head of one end of the fuel nozzle installed at the bottom and enables two end faces of the end head to be communicated, and a radial hole is formed in the end, connected with the oxidizing agent nozzle, of the fuel nozzle. By means of the reasonable design of the partition plate nozzle structure, unstable combustion is effectively restrained, and meanwhile high combustion efficiency and good outlet gas temperature uniformity are guaranteed.

Description

technical field [0001] The invention relates to a pre-chamber partition nozzle structure, which belongs to the field of liquid rocket engines. Background technique [0002] In the early design process of liquid rocket engines, the problem of high-frequency combustion stability is generally an important problem that the thrust chamber needs to face, while the problem of low-frequency combustion stability is mainly faced by the pre-combustion chamber. However, with the continuous expansion of the scale of aerospace activities, the thrust of liquid rocket engines continues to increase, which increases the structural size, flow, and pressure of the pre-chamber. The pre-chamber also needs to face high-frequency combustion stability during the design process. sexual issues. At the same time, on the basis of ensuring stable combustion, the pre-combustion chamber also needs to ensure high combustion efficiency and uniform temperature of the outlet gas. [0003] The baffle can chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/52
CPCF02K9/52Y02T10/12
Inventor 潘刚牛旭东刘倩张晋博石珊珊潘亮韩长霖孔维鹏郭洪坤刘红珍张亚郑孟伟孙纪国
Owner BEIJING AEROSPACE PROPULSION INST
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