阅读说明：本技术 一种可燃药筒用多破片中止燃烧器 (Combustible cartridge case is with many fragments stop combustor ) 是由 张江波 赵树森 梁泰鑫 肖飞 刘威 肖忠良 刘幼平 于 2021-08-29 设计创作，主要内容包括：本发明公开了一种可燃药筒用多破片中止燃烧器,其特征在于,包括多级喷管、控速破片、控压破片、本体、烧蚀笼、可燃药筒片、螺堵；采用烧蚀笼的结构,通过将可燃药筒片放置于烧蚀笼内,能够收集到大部分中止燃烧后的可燃药筒片,增大了所获样本量；采用等直径喷口的结构,使得可燃药筒片的表面形貌能够完好的保存；采用多破片的结构,通过对破片的厚度、间距及数量的调整,可以保证烧蚀笼运动速度的可控,燃烧过程熄灭的稳定性。本发明解决了中止燃烧器中含能物质喷出时的机械损伤、样品收集的问题,进一步提高了含能物质燃烧过程的精细诊断。(The invention discloses a multi-fragment stop burner for a combustible cartridge, which is characterized by comprising a multi-stage spray pipe, a speed control fragment, a pressure control fragment, a body, an ablation cage, a combustible cartridge fragment and a plug; by adopting the structure of the ablation cage, most of the combustible cartridge pieces after combustion is stopped can be collected by placing the combustible cartridge pieces in the ablation cage, so that the obtained sample amount is increased; the structure of the equal-diameter nozzle is adopted, so that the surface appearance of the combustible cartridge can be well preserved; the structure of adopting many fragments, through the adjustment to the thickness of fragment, interval and quantity, can guarantee to ablate the controllable of cage velocity of movement, the stability that the combustion process was extinguished. The invention solves the problems of mechanical damage and sample collection when the ejection of the energetic substance in the combustor is stopped, and further improves the fine diagnosis of the combustion process of the energetic substance.)

1. A multi-fragment stop burner for a combustible cartridge is characterized by comprising a multi-stage spray pipe (1), a speed control fragment (2), a pressure control fragment (3), a body (4), an ablation cage (5), a combustible cartridge fragment (6) and a plug (7);

the multistage spray pipe (1) is of a horn-shaped structure, the inside of the multistage spray pipe is generally horn-shaped, the outside of the multistage spray pipe is cylindrical, the multistage spray pipe is composed of a plurality of subsections, a groove is arranged between every two subsections, the subsections are in threaded connection with each other, the left end and the right end of one section at the rightmost end are both provided with grooves, and the multistage spray pipe is connected with the body (4) through threads;

the speed control fragment (2) is of a disc-shaped structure, is made of copper materials, is matched with the groove of the multi-stage spray pipe (1) in size, and is placed at the groove of the multi-stage spray pipe (1);

the pressure control rupture disc (3) is of a disc-shaped structure and made of copper materials and is placed at the rightmost end of the multi-stage spray pipe (1) and a groove of the body (4);

the body (4) is of a cylindrical structure, one end of the body is connected with the rightmost end of the multi-stage spray pipe (1) through threads, and the other end of the body is sealed by a plug (7);

the ablation cage (5) is of a cylindrical cage-shaped structure, is woven by steel wires, has the external dimension slightly smaller than the internal dimension of the body, is arranged in the body (4), and is internally provided with the ablation cage (5) through the combustible cartridge piece (6);

the combustible cartridge piece (6) is of a sheet structure, the combustible cartridge is cut into a cuboid shape with a certain size and is arranged inside the ablation cage (5);

the plug (7) is of a cylindrical structure and is used for plugging the body (4).

2. The multiple burst stop burner as claimed in claim 1, further comprising a multi-stage nozzle 1 having a trumpet-shaped structure, an inner portion having a trumpet shape, an outer portion having a cylindrical shape, and a material of 45 steel having a size of Φ 120mm x 160mm, and comprising N2 (N2, 4, 5 … …) segments, wherein the first segment has a left end having an inner diameter of Φ 80mm, a length of 100mm, and a right end having an inner diameter of Φ 60mm, the second segment has a left end having an inner diameter of Φ 58mm, a length of 60mm, and a right end having an inner diameter of Φ 50mm, and wherein a groove is formed between the first segment and the second segment, the groove having a size of Φ 80mm x 0.5mm, the first segment and the second segment are connected by a screw thread, the groove is formed between the second segment and the body 4, the groove has a size of Φ 70mm x 1mm, and N (N2, 4, 5 … …) segments form the multi-stage nozzle 1, and the rightmost end of the multi-stage nozzle 1 is connected to the body 4 by a screw thread.

Technical Field

The invention relates to the technical field of combustible cartridge combustion, in particular to a stop burner, and particularly relates to a structure which is provided with a large opening size and is formed by multiple fragments, so that the structure of a combustible cartridge after the fragments are broken by pressure is not damaged, and the combustion process of the combustible cartridge is characterized.

Background

The stop burner is a pressure container with a semi-closed structure, when gunpowder burns in the pressure container, the fragments are sheared after the generated pressure reaches the shearing force of the fragments, the gunpowder is sprayed out from the nozzle, the combustion process of the gunpowder is stopped due to sudden pressure relief, and the information of the combustion process is reserved on the surface appearance of the obtained gunpowder. The stopping burner is generally used for researching the combustion process of energetic materials such as propellant powder, combustible cartridge and the like, and due to the structural characteristics, when energetic materials are sprayed out of the semi-closed burner, the energetic materials are often damaged by the edge of a nozzle part, so that a part of medicine particles are in a structural form after mechanical damage, on the other hand, the medicine particles are directly sprayed out of the nozzle and then impact the ground or the wall, and a part of the finally collected medicine particles are damaged due to impact, so that the existing stopping burner has the following problems: (1) after the medicine particles are sprayed out of the nozzle, the medicine particles are not effectively protected and directly impact the ground or the wall surface to be damaged; (2) the diameter of the nozzle is smaller than that of the semi-closed container, and when the medicine particles are sprayed out of the container, the medicine particles collide with the necking part and are mechanically damaged; (3) after the fragments are sheared, the pressure difference is larger, the movement speed of the medicine particles is higher, and the damage proportion caused by collision is larger. However, the research on the combustion characteristics of energetic substances under different pressures is very important, and the accurate acquisition of the surface morphology of the explosive particles after combustion is stopped cannot be realized by the existing technical means.

From the current retrieved technical data, no stopping burner which adopts a large-opening-size multi-fragment composition structure and can keep the perfect surface appearance after the medicine particles are sprayed out from a nozzle is obtained.

Disclosure of Invention

The invention aims to provide a multi-fragment combustion-stopping burner for a combustible cartridge, which aims to overcome the defects or shortcomings of the existing combustion-stopping burner, and particularly adopts a structure of an ablation cage, an equal-diameter nozzle and a multi-fragment, the combustible cartridge is arranged in the ablation cage for combustion, the ablation cage can be integrally sprayed out of a semi-closed container through the equal-diameter nozzle, the spraying speed can be controlled through the multi-fragment structure, and the combustible cartridge with perfect surface appearance after being sprayed out of the nozzle can be obtained through adjusting the parameters.

In order to realize the task, the invention adopts the following technical solution:

a multi-fragment stop burner for a combustible cartridge is characterized by comprising a multi-stage spray pipe, a speed control fragment, a pressure control fragment, a body, an ablation cage, a combustible cartridge fragment and a plug;

the multistage spray pipe is of a horn-shaped structure, the inside of the multistage spray pipe is generally horn-shaped, the outside of the multistage spray pipe is cylindrical, the multistage spray pipe is composed of a plurality of subsections, a groove is arranged between every two subsections, the subsections are in threaded connection with each other, the left end and the right end of one section at the rightmost end are both provided with grooves, and the multistage spray pipe is connected with the body through threads;

the speed control fragment is of a disc-shaped structure, is made of copper materials, is matched with the groove of the multi-stage spray pipe in size, and is placed at the groove of the multi-stage spray pipe;

the pressure control rupture disc is of a disc-shaped structure and made of copper materials and is placed at the rightmost end of the multi-stage spray pipe and the groove of the body;

the body is of a cylindrical structure, one end of the body is connected with the rightmost end of the multi-stage spray pipe through threads, and the other end of the body is sealed by a plug;

the ablation cage is of a cylindrical cage-shaped structure, is woven by steel wires, is slightly smaller than the internal size of the body in external dimension, and is arranged in the body, and the combustible cartridge piece is arranged in the ablation cage;

the combustible cartridge piece is of a sheet structure, the combustible cartridge is cut into a cuboid shape with a certain size and is arranged inside the ablation cage;

the plug is of a cylindrical structure and is used for plugging the body;

the combustible cartridge multi-fragment stop burner is obtained by sequentially assembling the components.

Compared with the prior art, the multi-fragment stop burner for the combustible cartridge has the advantages that:

(1) adopt the structure of ablating the cage, place in ablating the cage through will be burnt cartridge case piece, can guarantee under the not influenced circumstances of burning, the combustible cartridge case piece spouts the spout as whole, can collect the combustible cartridge case piece after most stops burning, has increased the sample size that obtains. Compared with the prior art, the combustible cartridge piece can collect most of complete samples under the condition of not influencing the combustion performance of the combustible cartridge piece.

(2) By adopting the structure of the equal-diameter nozzle, the ablation cage can be prevented from being damaged mechanically in the movement process, so that the surface appearance of the combustible cartridge can be well preserved. Compared with the prior art, the nozzle can prevent the combustion substances from being mechanically damaged in the process of spraying the nozzle out of the body, thereby reserving abundant surface information in the combustion process and eliminating the influence of mechanical damage.

(3) The structure of adopting many fragments, through the adjustment to the thickness of fragment, interval and quantity, can guarantee to ablate the controllable of cage velocity of movement, the stability that the combustion process was extinguished. Compared with the prior art, the method can regulate and control the combustion process and the extinguishing process of the sample, can control the movement speed of the sample, greatly improves the accuracy of diagnosis of the combustion process, and fills the blank in the prior art.

Therefore, the invention solves the problems of mechanical damage and sample collection when the ejection of the energetic materials in the combustor is stopped, and further improves the fine diagnosis of the combustion process of the energetic materials.

Drawings

FIG. 1 is a schematic view of the composition of a multiple fragment stop burner for the combustible cartridge of the invention.

Fig. 2 is a sectional view taken along the line a in fig. 1.

Detailed Description

The invention is further described in detail with reference to the drawings and the embodiments given by the inventor.

As shown in fig. 1 and fig. 2, the preferred structure of the multiple fragment stop burner for the combustible cartridge is provided in this embodiment, and includes a multi-stage nozzle 1, a speed control fragment 2, a pressure control fragment 3, a body 4, an ablation cage 5, a combustible cartridge fragment 6, and a plug 7;

the multi-stage spray pipe 1 is of a horn-shaped structure, the interior of the multi-stage spray pipe 1 is generally horn-shaped, the exterior of the multi-stage spray pipe is cylindrical, the material is No. 45 steel, the size is phi 120mm multiplied by 160mm, the multi-stage spray pipe is composed of two segments, the inner diameter of the left end of the first segment is phi 80mm, the length of the first segment is 100mm, the inner diameter of the right end of the first segment is phi 60mm, the inner diameter of the left end of the second segment is phi 58mm, the length of the second segment is 60mm, the inner diameter of the right end of the second segment is phi 50mm, a groove is reserved between the first segment and the second segment, the size of the groove is phi 80mm multiplied by 0.5mm, the first segment and the second segment are connected by threads, a groove is reserved between the second segment and the body 4, the size of the groove is phi 70mm multiplied by 1mm, the first segment and the second segment form the multi-stage spray pipe 1, and the rightmost end of the multi-stage spray pipe 1 is connected with the body 4 by threads;

the speed control fragment 2 is of a disc-shaped structure, is made of copper materials, has the size of phi 80mm multiplied by 0.5mm, is placed in the grooves of the first section and the second section of the multi-stage spray pipe 1, and is compressed through threads;

the pressure control crushing piece 3 is of a disc-shaped structure, is made of copper materials, has the size of phi 70mm multiplied by 1mm, is placed in a groove between the rightmost end of the multi-stage spray pipe 1 and the body 4, and is tightly pressed through threads;

the body 4 is of a cylindrical structure, is made of 45-grade steel, has the dimensions of phi 50mm multiplied by 200mm and the wall thickness of 30mm, is provided with a through hole with the diameter of phi 30mm at the right end, is connected with the rightmost end of the multi-stage spray pipe 1 through threads at the left end, and is sealed by a plug 7 at the right end;

the ablation cage 5 is a cylindrical cage-shaped structure and is woven by steel wires, the diameter of each steel wire is phi 0.5mm, the size of a small hole formed after net formation is 4mm multiplied by 4mm, the external size is phi 45mm multiplied by 180mm, the ablation cage is arranged in the body 4, and the combustible cartridge piece 6 is arranged inside the ablation cage 5;

the combustible cartridge piece 6 is of a sheet-shaped structure, is made of a rolled combustible cartridge, is cut into a shape of 10mm multiplied by 50mm, and is arranged inside the ablation cage 5;

the plug 7 is of a cylindrical structure, is made of 45-grade steel and has the size of phi 30mm multiplied by 50mm, and plugs the body 4 through threads;

the combustible cartridge is obtained by sequentially assembling the parts, the thickness, the number and the size of the speed control fragments 2 and the size of the small hole 8 of the ablation cage 5 are adjusted, so that the combustion process and the extinguishing process of the combustible cartridge fragments 6 can be regulated and controlled, and the accuracy of the combustion process diagnosis is greatly improved.

Putting 20 g of combustible cartridge piece 6 into ablation cage 5, igniting the combustible cartridge piece 6, generating more gas, simultaneously increasing pressure rapidly, when the pressure reaches the shearing pressure of pressure control fragment 3, breaking pressure control fragment 3, moving ablation cage 5 together with combustible cartridge piece 6, at the moment, the pressure exceeds the shearing pressure of speed control fragment 2, breaking speed control fragment 2, and flushing ablation cage 5 together with combustible cartridge piece 6 out of the stop burner and extinguishing. Finally, a combustion-terminated sample of the combustible cartridge piece 6 with intact topographical features remains in the ablation cage 5.