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Solid-liquid rocket engine nozzle airtight inspection device

An engine nozzle and airtight inspection technology, which is applied in the direction of rocket engine devices, jet propulsion devices, machines/engines, etc., can solve the problem of difficult operation and inability to accurately check the airtight performance and airtightness of the connecting part of the nozzle and the combustion chamber. Complicated devices and other problems, to achieve the effect of increasing flexibility and simple and quick air-tight inspection operation

Inactive Publication Date: 2017-06-13
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the specific implementation process of airtight inspection, the design, manufacture and use of airtight devices will be more complicated in this connection mode, and it is not easy to operate
At the same time, since the flying nozzle is bonded with a plugging cap, it bears less pressure, so the pressure at the front end of the plugging cap when checking the airtightness is lower than the pressure in actual work, and the airtightness of the connecting part of the nozzle and the combustion chamber cannot be accurately checked. performance

Method used

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  • Solid-liquid rocket engine nozzle airtight inspection device

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Embodiment Construction

[0018] specific implementation plan

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] The nozzle airtight inspection device of the present invention comprises a nozzle airtight tooling 1, a screw rod 2, a nut 3, a fastening screw 4 and a nozzle 5, such as figure 1 shown.

[0021] The nozzle airtight tooling 1 is a circular plate-shaped structure, and 12 through holes are evenly opened on the outer edge of the surface; at the same time, 24 threaded holes are evenly opened on the circumference of the connection between the nozzle 7 and the combustion chamber 9, such as figure 2 Shown; The 24 threaded holes run through the step that is designed on the nozzle pipe 7 and cooperates between the end faces of the combustion chamber 9, and extends to the rear end face of the combustion chamber. The 12 threaded holes at intervals among the 24 threaded holes are used as screw mounting holes, which correspond to the c...

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Abstract

The invention discloses an airtight inspection device for a nozzle of a solid-liquid rocket engine, comprising a nozzle, a nozzle, a combustion chamber, a screw, a sealing ring and a plug for the nozzle. The nozzle and the combustion chamber are connected by fastening screws, the screw passes through the airtight device of the nozzle, the nozzle and the combustion chamber are connected, and the outlet part of the nozzle and the nozzle are connected through the design of the concave platform on the airtight device of the nozzle. The air-tight device cooperates and the sealing ring is added to realize the sealing of the nozzle; and the two-way pressurization during the air-tight inspection is realized through the nozzle, which significantly improves the pressure range that can be increased during the air-tight inspection of the nozzle. The invention is suitable for the airtight inspection of the combustion chamber and the nozzle connected by thread; the airtight device of the nozzle and the outlet part of the nozzle are sealed by the sealing ring; The connection of the nozzle eliminates the need to separately fix the parts of the nozzle airtight device, which facilitates the implementation of the airtight inspection process.

Description

technical field [0001] The patent of the present invention relates to the technical field of solid-liquid rocket engines, specifically, it is a device for sealing the nozzle when checking the airtightness of the nozzle, releasing the pressure in real time and increasing the pressure at both ends. Background technique [0002] Due to the unique storage method of the propellant in the solid-liquid rocket engine, generally speaking, the oxidant is stored in liquid form, while the fuel is stored in solid form. This also makes the combustion inside the solid-liquid rocket engine mainly in the form of diffusion combustion. After the oxidant is gasified and the pyrolyzed fuel is mixed in the combustion chamber and then burned, it is discharged through the nozzle. The solid-liquid rocket engine is mainly composed of head chamber, injection panel, combustion chamber, powder column, nozzle and other components, and the connection of each component is mainly in the form of bolts or scr...

Claims

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Application Information

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IPC IPC(8): F02K9/96F02K9/97F02K9/72
CPCF02K9/96F02K9/72F02K9/97
Inventor 朱浩田辉于瑞鹏张源俊何凌飞
Owner BEIHANG UNIV
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