阅读说明：本技术 用于大口径炮膛内多点点火的电点火装置及其组装方法 (Electric ignition device for multipoint ignition in large-caliber gun bore and assembling method thereof ) 是由 陶如意 毛纪银 江坤 王浩 陈常顺 黄勇 孙继兵 王健 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种用于大口径炮膛内多点点火的电点火装置及其组装方法,包括可燃点火具和点火端盖,可燃点火具包括点火具底盖、点火具端盖、第一点火药、点火具底座侧壁、电热丝,点火具端盖位于所述点火具底座侧壁外部,点火具底座侧壁、点火具端盖和点火具底盖共同形成第一点火药室,点火具端盖位于点火具底座侧壁外的侧边周向开设有多个小孔,点火端盖包括点火盘、点火膜片和第二点火药,第二点火药位于点火盘和点火膜片形成的第二点火药室内,可燃点火具的至少部分位于点火端盖内,点火具端盖的小孔位于第二点火药室内。本发明点火装置不仅实现了发射药的双向引燃,增加了发射药的引燃速率,同时保证了整个装置可燃。(The invention discloses an electric ignition device for multi-point ignition in a large-caliber bore and an assembling method thereof, wherein the electric ignition device comprises a combustible ignition tool and an ignition end cover, the combustible ignition tool comprises an ignition tool bottom cover, an ignition tool end cover, first ignition powder, an ignition tool base side wall and an electric heating wire, the ignition tool end cover is positioned outside the ignition tool base side wall, the ignition tool end cover and the ignition tool bottom cover jointly form a first ignition powder chamber, a plurality of small holes are circumferentially formed in the side edge of the ignition tool end cover positioned outside the ignition tool base side wall, the ignition end cover comprises an ignition disc, an ignition membrane and second ignition powder, the second ignition powder is positioned in a second ignition powder chamber formed by the ignition disc and the ignition membrane, at least part of the combustible ignition tool is positioned in the ignition end cover, and the small holes of the ignition tool end cover are positioned in the second ignition powder chamber. The ignition device of the invention not only realizes the bidirectional ignition of the propellant powder, increases the ignition rate of the propellant powder, but also ensures the combustibility of the whole device.)

1. The electric ignition device for multi-point ignition in the large-caliber barrel is characterized by comprising a combustible ignition tool and an ignition end cover, wherein the combustible ignition tool comprises an ignition tool bottom cover (1), an ignition tool end cover (4), a first ignition powder (3), an ignition tool base side wall (5) and an electric heating wire (6), the inner surface of the ignition tool bottom cover (1) is connected with the ignition tool base side wall (5), the ignition tool end cover (4) is positioned outside the ignition tool base side wall (5), the ignition tool end cover (4) and the ignition tool bottom cover (1) jointly form a first ignition powder chamber, the ignition powder (3) is arranged in the first ignition powder chamber, a plurality of small holes are circumferentially formed in the side edge of the ignition tool end cover (4) positioned outside the ignition tool base side wall (5), and the electric heating wire (6) is used for realizing the ignition of the ignition powder (3),

the ignition end cover comprises an ignition disc (9), an ignition membrane (8) and second ignition powder (10), wherein the second ignition powder (10) is located in a second ignition powder chamber formed by the ignition disc (9) and the ignition membrane (8), at least part of the combustible ignition tool is located in the ignition end cover, and a small hole of the ignition tool end cover (4) is located in the second ignition powder chamber.

2. The electric ignition device for multi-point ignition in a large-caliber barrel according to claim 1, further comprising a blocking cover (7), wherein two electric heating wire holes are formed in the bottom cover (1) of the ignition device, the electric heating wire (6) passes through one electric heating wire hole, extends into the first ignition powder (3) and then passes through the other electric heating wire hole, and the bottom surface of the blocking cover (7) is glued and adhered to the inner surface of the bottom cover (1) of the ignition device to block the two electric heating wire holes.

3. The electric ignition device for multipoint ignition in a large-caliber bore according to claim 2, further comprising a plurality of wire fixing seats (2), wherein the bottom of the wire fixing seat (2) is fixedly connected with the side wall (5) of the igniter base, a wire threading hole is formed in the wire fixing seat (2), and the electric heating wire (6) sequentially penetrates through the wire threading holes of the plurality of wire fixing seats (2) and then penetrates out of another electric heating wire hole.

4. Electric ignition device for multiple ignition in large bore bores according to claim 3, characterized in that the thickness of the igniter end cap (4) is smaller than the thickness of the igniter bottom cap (1).

5. Electric ignition device for multipoint ignition in a large bore according to claim 3, characterized in that said igniter bottom cap (1), said alignment base (2), said igniter end cap (4), said igniter base side wall (5) and said closure cap (7) are made of combustible material.

6. The electric ignition device for multipoint ignition in a large-caliber bore according to claim 5, wherein the combustible material comprises 63% of nitrocotton, 24% of fiber paper board and 13% of latex by mass.

7. Electric ignition device for multipoint ignition in a large bore according to claim 3 characterized in that said heating wire (6) is a copper wire.

8. Method of assembling an electric ignition device for multiple ignition in a large bore according to any of claims 3 to 7, characterized in that the top of the igniter end cap (4) is located outside the ignition disc (9).

9. An electric ignition device for multiple ignition within a large bore hole as defined in claim 8 wherein said cannon is a balanced cannon.

10. The method of assembling an electric ignition device for multipoint ignition in a large bore according to any of claims 3 to 9, wherein the heating wire (6) is inserted into the igniter through one heating wire hole of the igniter bottom cap (1), and then sequentially passed through and wound around the wire holder (2) for one turn, and after being fixed, passed through the other heating wire hole of the igniter bottom cap (1), and after passing through the hole, the bottom surface of the cap (7) is adhered to the inner surface of the igniter bottom cap (1) to block the two heating wire holes of the bottom cap, thereby preventing the gas from overflowing through the hole, after the adhesive is dried, the first ignition charge (3) is poured into the first ignition charge chamber, the inner side of the igniter end cap (4) is adhered to the sidewall (5) of the igniter base, and after the drying, the ignition charge is completed, the ignition disc (9) is attached, and the second ignition charge (10) is charged into the second ignition charge chamber, after filling, the container is sealed by an ignition membrane (8).

Technical Field

The invention belongs to the technical field of gun ignition, and particularly relates to an electric ignition device for multipoint ignition in a large-caliber gun bore and an assembling method thereof.

Background

The large-caliber artillery generally refers to artillery with the caliber larger than 210mm, the large-caliber artillery is various at present, some calibers of some mortar and grenade artillery exceed 210mm, the calibers of rocket artillery and coastal artillery are even larger, and the large-caliber artillery is characterized by large projectile and large barrel calibre, so that the required loading capacity is large and the length of a explosive package is long in order to ensure a certain initial speed of the projectile. Due to the characteristic of large charge, conventional ignition at the bottom cannot ensure simultaneous combustion of propellant powder, and ignition also becomes one of optimization problems considered by large-caliber guns. The balance gun is one of the big caliber guns developed in recent years, the front end and the rear end of the balance gun are respectively provided with a shot and a balance body, when gunpowder is ignited, high-pressure gas generated pushes the shot and the balance body to move, and due to the fact that the two move in opposite directions, the backward balance body just offsets recoil generated by the shot after the shot goes out of a chamber. The use of the balance cannon effectively solves the difficult problem of the design of the anti-recoil device on the kinetic energy of the cannon mouth. Especially, with the continuous improvement of the modern war operation technology, the development of the missile with large diameter and long range is accelerated, and the development of the balance cannon provides a ground shooting platform for the missile, which is one of the important means for completing the ground test of the missile warhead.

With the development of large-caliber gun technology, a multi-point ignition technology appears in the development of a plurality of large-caliber guns, namely, simultaneous ignition is carried out in different areas of a explosive chamber, a plurality of igniters are distributed at each main explosive containing box, the igniters are ignited firstly during ignition, and then ignition powder in a fire transfer tube is ignited to ignite main explosive. However, the existing ignition tool for multipoint ignition is the same as the traditional ignition tool and is made of metal, so that the ignition tool cannot disappear and remain in a bore after gunpowder is ignited, and the bore is possibly damaged by collision with the inner wall of a barrel along with the movement of gas to the direction of a muzzle. In addition, due to the characteristic of large caliber of the balance gun, the diameter of the propellant powder to be filled is large, the propellant powder is ignited through the ignition tube, so that the time for igniting the propellant powder from the central tube is a problem to be considered, the ignition consistency is poor due to long time, and although the multipoint ignition technology can effectively solve the time problem of axial ignition, the time problem of radial ignition of the propellant powder by flame in a large-diameter propellant chamber cannot be solved in practice.

Disclosure of Invention

The invention aims to provide an electric ignition device for multipoint ignition in a large-caliber bore and an assembling method thereof. The ignition device not only realizes the bidirectional ignition of the propellant powder, increases the ignition rate of the propellant powder, but also ensures the whole device to be combustible, namely, the ignition device is made of combustible materials, avoids the damage to the inside of a bore and improves the inner trajectory performance compared with a non-combustible ignition device.

The technical solution to achieve the above object is as follows:

an electric ignition device for multi-point ignition in a large-caliber bore comprises a combustible ignition tool and an ignition end cover, wherein the combustible ignition tool comprises an ignition tool bottom cover, an ignition tool end cover, first ignition powder, an ignition tool base side wall and a heating wire, the inner surface of the ignition tool bottom cover is connected with the ignition tool base side wall, the ignition tool end cover is positioned outside the ignition tool base side wall, the ignition tool end cover and the ignition tool bottom cover jointly form a first ignition powder chamber, the ignition powder is arranged in the first ignition powder chamber, a plurality of small holes are circumferentially arranged on the side edge of the ignition tool end cover, which is positioned outside the ignition tool base side wall, the heating wire is used for realizing the ignition of the ignition powder,

the ignition end cover comprises an ignition disc, an ignition membrane and second ignition powder, the second ignition powder is located in a second ignition powder chamber formed by the ignition disc and the ignition membrane, at least part of the combustible ignition tool is located in the ignition end cover, and the small hole of the ignition tool end cover is located in the second ignition powder chamber.

The ignition device further comprises a blocking cover, two electric heating wire holes are formed in the bottom cover of the ignition device, the electric heating wires penetrate through one electric heating wire hole, extend into the first ignition powder and then penetrate out of the other electric heating wire hole, and the bottom surface of the blocking cover is glued and adhered to the inner surface of the bottom cover of the ignition device to block the two electric heating wire holes.

Furthermore, the ignition device also comprises a plurality of wire fixing seats, the bottoms of the wire fixing seats are fixedly connected with the side wall of the ignition device base, the wire fixing seats are provided with wire through holes, and the electric heating wires sequentially penetrate through the wire through holes of the wire fixing seats and then penetrate out of another electric heating wire hole.

Further, the thickness of the igniter end cover is smaller than that of the igniter bottom cover.

Furthermore, the bottom cover of the igniter, the wire fixing seat, the end cover of the igniter, the side wall of the base of the igniter and the blocking cover are all made of combustible materials.

Further, the combustible material comprises 63% of nitrocotton, 24% of fiber paper board and 13% of latex (mass ratio).

Further, the heating wire is a copper wire.

Further, the top of the igniter end cover is positioned outside the ignition disc.

Further, the cannon is a balance cannon.

According to the assembling method of the electric ignition device for multipoint ignition in the large-caliber bore, the electric heating wire penetrates into the igniter through one electric heating wire hole of the igniter bottom cover, then sequentially penetrates through and is wound around the wire setting seat for one circle, and penetrates out of the other electric heating wire hole of the igniter bottom cover after being fixed, the bottom cover is coated and glued on the inner surface of the igniter bottom cover after penetrating out to block the two electric heating wire holes of the bottom cover, so that the gas is prevented from overflowing through the small holes, after the sealing glue is dried, the first ignition powder is poured into the first ignition powder chamber, the inner side of the igniter end cover is coated and glued on the side wall of the igniter base, the filling is completed after drying, after the filling of the combustible igniter is completed, the combustible igniter is pasted on an ignition disc, the second ignition powder is filled in the second ignition powder chamber, and the ignition film is used for sealing after the filling.

Compared with the prior art, the invention has the beneficial effects that:

(1) the combustible igniter can be burnt by itself and burnt out along with the burning of gunpowder, and has no influence on the inner cavity, and the combustible igniter in the design can not only transfer fire to the central fire transfer pipe, but also ignite to the ignition end cover through the side wall, so that bidirectional ignition is realized;

(2) the ignition end cover is also made of combustible materials and is arranged on the end face of the propellant powder, and the propellant powder can be ignited axially from the front and the back of the installation position due to the combustibility of the ignition end cover;

(3) the combustible igniter is not only suitable for the multipoint ignition technology of the balance gun, but also suitable for multipoint ignition of other large-caliber guns, and the combustible materials can meet the requirement of strength.

Drawings

FIG. 1 is a schematic view of a combustible ignitor.

FIG. 2 is a front view of an end cap in a combustible igniter.

Figure 3 is a flow chart of a combustible igniter charge.

Fig. 4 is a front view of the alignment seat.

Figure 5 is a side view of the alignment block.

FIG. 6 is a schematic view of a firing end cap configuration.

Figure 7 is an assembly view of the igniter and the igniter cap.

Fig. 8 is a device ignition gas flow diagram.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

With reference to fig. 1 and 6, it can be seen that the multipoint ignition device in the large-caliber bore of the present invention mainly comprises two components, namely, the combustible ignition device in fig. 1 and the ignition end cap in fig. 5, which are matched with each other. The multi-point ignition device in the large-caliber bore is specifically introduced as follows:

the structure of the combustible igniter comprises an igniter bottom cover 1, an igniter end cover 4, an ignition charge 3, an electric heating wire 6, a blocking cover 7 and other accessory parts. The largest difference between a combustible ignitor and other igniters is the use of combustible materials that are subjected to a specified ignition pressure. The combustible material adopted in the invention comprises the basic components of 63% of nitrocotton, 24% of fiber paper board and 13% of latex (mass ratio). The fuel is mixed and diluted, and then is molded, dried, filtered and formed. The other materials except the electric heating wire 6 are made of the above combustible material.

In order to ensure that ignition gas is ejected forwards during ignition, the thickness of the igniter end cover 4 is smaller than that of the igniter bottom cover 1, so that a membrane breaking part is positioned on the igniter end cover 4; meanwhile, in order to ensure that the ignition flame of the igniter is radially sprayed, 24 small holes are formed in the circumferential direction of the end cover 4 of the igniter, as shown in fig. 2, so that the thickness of the small holes of the igniter is small, the ignition powder 3 in the igniter is ignited, and then the flame breaks through the side wall 5 of the base of the igniter and the end cover 4 of the igniter, so that the powder in the ignition tube and the ignition powder 10 in the end cover of the igniter are ignited.

The blocking cover 7 has two functions, namely, blocking two small holes of the bottom cover and keeping the electric heating wires separated from the ignition tool, so that the ignition difficulty caused by mutual winding is avoided.

The electric heating wire 6 is a slender copper wire, after being electrified, the electric heating wire is ignited due to high resistance and high temperature, two small holes are reserved on two sides of the bottom cover 1 of the igniter for the electric heating wire 6 to penetrate out, and the wire-fixing seat 2 is used for fixing the electric heating wire in the center of the igniter and keeping the electric heating wire 6 to be fully contacted with the ignition powder 3.

With reference to fig. 3, in actual loading, the heating wire 6 penetrates into the ignition device through a hole of the bottom cover 1 of the ignition device, then sequentially penetrates and winds the wire fixing seat 2 for one circle, and penetrates out from the other side of the bottom cover 1 of the ignition device after being fixed (the structure of the wire fixing seat 2 is shown in fig. 4-5), and the bottom surface of the plugging cover 7 is glued on the inner surface of the bottom cover to plug two small holes of the bottom cover, so that gas is prevented from overflowing through the small holes. After the sealing glue is dried in the air, the ignition powder is poured into the igniter, the inner side of the end cover 4 is glued on the side wall 5 of the igniter base, and the filling is completed after the sealing glue is dried in the air. The filling process is shown in figure 3.

As shown in fig. 6, the ignition end cap is comprised of two main parts; an ignition disk 9 and an ignition membrane 8. Combining the igniter and the ignition end cover assembly drawing of fig. 7, after the igniter is charged, the igniter is attached to an ignition disc 9, point gunpowder 10 is charged, and after the igniter is filled, an ignition membrane 8 is sealed. After the ignition end cover and the combustible ignition tool are assembled, the combustible ignition device can be arranged at one end of the propellant powder. To meet different internal ballistic performance, ignition end caps may be mounted on both ends of the propellant, as shown in fig. 8.

As shown in fig. 8, which is an ignition gas action diagram of the igniter and the ignition end cap installed on the propellant powder, the direction of the ignition powder gas flow can be known through the diagram, when the ignition signal is transmitted, the heating wire generates heat under the action of the current to ignite the ignition powder in the combustible igniter 11, the ignition powder burns to generate pressure, when the pressure is increased to the rupture pressure of the top end and the side wall of the igniter, a part of the high-pressure gas ignites the ignition powder in the fire transfer tube 14 along the axial direction, and the other part of the high-pressure gas ignites the gunpowder in the ignition end cap 12 along the radial direction through the small opening on the side wall of the combustible igniter 11; after the ignition powder in the ignition tube 14 is ignited, the high-pressure gas flows to the propellant powder 13 along the radial direction, and after the ignition powder in the ignition end cover 12 is ignited, the gas ignites the propellant powder 13 along the axial direction, and due to the ignitability of the igniter and the ignition end cover, the ignition powder and the propellant powder burn and disappear in the ignition process. Therefore, the process realizes the bidirectional ignition of the propellant powder, increases the burning speed and improves the ignition stability and reliability. As indicated by the arrows in fig. 8.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.