阅读说明：本技术 一种发动机的固药结构 (Solid medicine structure of engine ) 是由 程琨 陈伟 陈国光 霍艳琼 郭小飞 薛谈顺 王丽芳 任室澎 崔海斌 王飞 于 2021-09-14 设计创作，主要内容包括：本发明公开的一种发动机的固药结构,属于固体火箭发动机技术领域。本发明包括后挂药板、药柱和点火装置。所述后挂药板为蜂窝状结构,其中挂药部位为具有限位台阶的沉孔结构,既能在安装药柱时起到定位作用,又能提供排气通道；所述非挂药部位设有尽可能多的通孔,所述通孔作为过气通道。本发明采用具有限位台阶的沉孔结构的后挂药板进行装药,降低对固药胶和固化工艺的要求,提升药柱的安装可靠性；将点火装置前置,优化传火系统,降低对喷管堵盖的结构设计要求,有利于总体方案的优化。(The invention discloses a medicine fixing structure of an engine, and belongs to the technical field of solid rocket engines. The invention comprises a rear drug hanging plate, a drug column and an ignition device. The rear drug hanging plate is of a honeycomb structure, wherein the drug hanging part is of a counter bore structure with a limiting step, so that the rear drug hanging plate can play a role in positioning when a drug column is installed and can provide an exhaust channel; the non-medicine-hanging part is provided with through holes as many as possible, and the through holes are used as air passing channels. The rear drug hanging plate with the limiting step counter bore structure is used for charging, so that the requirements on drug fixing glue and a curing process are reduced, and the mounting reliability of the drug column is improved; the ignition device is arranged in front, a fire transfer system is optimized, the structural design requirement on the spray pipe blocking cover is reduced, and the optimization of the overall scheme is facilitated.)

1. The utility model provides a solid medicine structure of engine which characterized in that: comprises a rear drug hanging plate (1), a drug column (2) and an ignition device (3);

the rear drug hanging plate (1) is of a honeycomb structure, wherein the drug hanging part is of a counter bore structure with a limiting step, so that the positioning effect can be achieved when the drug column (2) is installed, and an exhaust channel can be provided; the non-medicine-hanging part is provided with through holes as many as possible, and the through holes are used as air passing channels;

the ignition device (3) is arranged at the front end of the engine, so that ignition is facilitated, and the cap blocking structure of the spray pipe is simplified.

2. The structure of claim 1 for fixing a chemical agent to an engine, wherein: coating a solid medicine glue on one end of the medicine column (2), and sequentially installing the medicine column in a counter bore with a limiting step on the rear medicine hanging plate (1); after the medicine-fixing glue is completely cured, the medicine filling is completed; when assembling the engine, the ignition device (3) is firstly arranged at the front end of the combustion chamber, and then the installed complete charge is loaded into the combustion chamber.

Technical Field

The invention belongs to the technical field of solid rocket engines, and relates to a multi-charge medicine fixing structure of an engine.

Background

When charging, a proper amount of solid propellant glue is poured into a bowl-shaped front propellant hanging plate, then the propellant grains are inserted into the front propellant hanging plate in sequence, after the solid propellant glue is completely cured, the solid propellant glue is loaded into a combustion chamber, and finally an ignition device is installed. The installation mode has high requirements on the adhesive capacity and the curing process of the solid chemical adhesive, and the spray pipe blanking cover is required to rupture the membrane within a certain pressure range, so the overall structural design and the assembly process of the engine are relatively complex.

Disclosure of Invention

The invention discloses a medicine fixing structure of an engine, and aims to optimize the medicine fixing structure of a plurality of charges, improve the ignition and working reliability of the engine and simplify the structure of a blocking cover.

The purpose of the invention is realized by the following technical scheme:

the invention discloses a medicine fixing structure of an engine, which comprises a rear medicine hanging plate, a medicine column and an ignition device.

The rear drug hanging plate is of a honeycomb structure, wherein the drug hanging part is of a counter bore structure with a limiting step, so that the rear drug hanging plate can play a role in positioning when a drug column is installed and can provide an exhaust channel; the non-medicine-hanging part is provided with through holes as many as possible, and the through holes are used as air passing channels.

The ignition device is arranged at the front end of the engine, so that ignition is facilitated, and the cap blocking structure of the spray pipe is simplified.

Coating a fixing adhesive on one end of the explosive column, and sequentially installing the explosive column in a counter bore with a limiting step on the rear explosive hanging plate; after the medicine-fixing glue is completely cured, the medicine filling is completed; when assembling the engine, the ignition device is first installed at the front end of the combustion chamber, and then the installed complete charge is loaded into the combustion chamber.

The invention discloses a working method of a medicine fixing structure of an engine, which comprises the following steps:

after the front ignition device is activated, the generated gas can pass through the inner surface and the outer surface of each grain, and all grains are ignited at the moment. High-temperature and high-pressure gas generated by combustion of the explosive column enters the spray pipe through the through hole of the rear explosive hanging plate, and energy is converted into kinetic energy to provide engine power.

Has the advantages that:

1. according to the multi-grain explosive fixing structure of the engine, the counter bore structure with the limiting step is adopted for charging, compared with a charging mode that explosive fixing glue is fixed on the explosive hanging plate, the multi-grain explosive fixing structure of the engine has the advantages that the requirements for the explosive fixing glue and the curing process are reduced, and the installation reliability of explosive grains is improved.

2. The multi-grain explosive fixing structure of the engine, which is disclosed by the invention, is provided with the ignition device in front, the fire transfer system is optimized, and the structural design of the spray pipe blocking cover only needs to seal the combustion chamber, so that the optimization of the overall scheme is facilitated.

Drawings

FIG. 1 is a schematic view of a rear drug hanging plate of the present invention;

fig. 2 is a schematic view of the installation of the drug column on the rear drug hanging plate.

Wherein: 1-rear drug hanging plate and 2-drug column.

FIG. 3 is a schematic view of the installation location of the ignition device, charge and rear powder-holding plate within the combustion chamber. The flowing direction of the fuel gas is clear in the figure, namely the installation position of the spray pipe is clear on one side of the rear drug hanging plate.

Wherein: 1-rear drug hanging plate, 2-drug column and 3-ignition device.

Detailed Description

For a better understanding of the objects and advantages of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

As shown in fig. 1, the medicine fixing structure of the engine disclosed in this embodiment includes a rear medicine hanging plate 1, a medicine column 2, and an ignition device 3.

The rear drug hanging plate 1 is of a honeycomb structure, wherein the drug hanging part is of a counter bore structure with a limiting step, so that the rear drug hanging plate can play a role in positioning and can provide an exhaust channel when the drug column 2 is installed; the non-medicine-hanging part is provided with through holes as many as possible, so as to provide air passing channels as many as possible;

when charging, firstly, according to the figure 1, the counter bore of the rear drug-hanging plate 1 is upward and is flatly placed on a working case, and the front side can be seen with a limit step.

According to the scheme shown in figure 2, one end of the grain 2 is coated with a small amount of solid medicine glue and then inserted into the stepped counter bore, and no redundant solid medicine glue is left in the through hole of the grain 2, so that the smoothness of the inner hole of the grain 2 is ensured. This operation is repeated until all the grains 2 are placed on the rear drug hanging plate 1.

And curing according to the performance index requirement of the solid medicine glue, and after the glue solution is completely cured, the medicine column 2 and the medicine hanging plate form a whole.

When the engine is assembled, the ignition device 3 is firstly installed at the front end of a combustion chamber of the engine, then the bonded explosive column 2 and the explosive hanging plate are installed in the combustion chamber, and finally the engine is assembled.

The working method of the medicine fixing structure of the engine disclosed by the embodiment comprises the following steps:

after the ignition device 3 is activated, the generated gas can pass through the inner and outer surfaces of each grain 2, and all grains 2 are ignited. High-temperature and high-pressure gas generated by combustion of the explosive column 2 enters the spray pipe through the through hole of the rear explosive hanging plate 1, and energy is converted into kinetic energy to provide power for the whole body.

The above detailed description is intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above detailed description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.