Spray pipe plug cover structure for solid-liquid rocket engine ground test

A ground test, solid-liquid rocket technology, applied in the direction of rocket engine devices, machines/engines, mechanical equipment, etc., can solve the problems that are not conducive to the study of ignition and start-up performance, difficult control of nozzle rupture pressure, poor repeatability, etc., to achieve consistency Good, high accuracy, easy processing effect

Active Publication Date: 2017-07-07
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The bonding of the nozzle cap is a one-time process, and the rupture pressure of the nozzle is not easy to control, which is not conducive to the study of the difference in ignition performance under different ru

Method used

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  • Spray pipe plug cover structure for solid-liquid rocket engine ground test
  • Spray pipe plug cover structure for solid-liquid rocket engine ground test

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Embodiment Construction

[0021] specific implementation plan

[0022] Below in conjunction with accompanying drawing, the patent of the present invention is described further.

[0023] The nozzle capping structure for the ground test of the solid-liquid rocket engine of the present invention is provided with a diaphragm 2 and a nozzle cap 3 in turn at the end of the nozzle 1, such as figure 1 shown.

[0024] The nozzle cap 3 is an annular plate structure made of 304 stainless steel, and the diameter of the inner ring is equal to the diameter of the nozzle outlet; the inner surface of the nozzle cap 3 is located at the inner ring and is designed with a concave part to form a stepped hole surface. The end of the nozzle 1 and the diaphragm 2 are embedded in the concave part, and the positioning is realized by the stepped hole surface. At the same time, there is a sealing groove on the outer edge of the bottom surface of the concave part, and the inside is used to place an O-shaped rubber sealing ring t...

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Abstract

The invention discloses a spray pipe plug cover structure for a solid-liquid rocket engine ground test. According to the spray pipe plug cover structure, the function of reliably breaking a diaphragm when the pressure intensity of a combustion chamber reaches a set value can be achieved, and the function of the diaphragm in the real working process of a spray pipe can be completely simulated in the test. The spray pipe plug cover structure comprises the diaphragm, a spray pipe plug cover and a long screw, wherein the plug cover diaphragm and a sealing ring are arranged at the end face of the outlet of the spray pipe in a combined mode and are positioned by a spray pipe plug cover tool. The diaphragm, the sealing ring and the spray pipe plug cover are positioned by a spray pipe shell and are fixedly connected and fastened to the head of the spray pipe through a long bolt so as to fix the position of the diaphragm. According to the spray pipe plug cover structure, the diaphragm, the spray pipe plug cover, a spray pipe heat insulation layer and the spray pipe shell are sealed through the sealing ring, so that the air impermeability of the combustion chamber is guaranteed; the diaphragm is convenient to process and install, and the uniformity of the breakage pressure intensity of the diaphragm is good through repeated test verification; and just the diaphragm needs to be replaced during repeated tests, and the spray pipe can be repeatedly used, so that the economical efficiency is good.

Description

technical field [0001] The invention relates to the technical field of solid-liquid rocket engines, in particular to a structure for simulating nozzle plugging for solid-liquid rocket engine ground tests. Background technique [0002] Compared with conventional solid or liquid rocket motors, solid-liquid rocket motors have advantages in terms of safety, economy, thrust adjustment characteristics and multiple start characteristics due to their own structural characteristics, and have attracted the attention of many researchers. The solid-liquid rocket engine uses liquid oxidant and solid fuel as propellants. The liquid oxidant enters the engine head cavity through the pipeline of the delivery system, enters the engine through the injection panel and reacts with the solid fuel for combustion, and finally is ejected from the nozzle to generate thrust. The structure of the combustion chamber nozzle of the solid-liquid rocket engine is similar to that of the solid rocket engine, ...

Claims

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Application Information

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IPC IPC(8): F02K9/96F02K9/97
CPCF02K9/96F02K9/978
Inventor 田辉朱浩段毓张源俊于瑞鹏
Owner BEIHANG UNIV
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