CN109579627B

CN109579627B - Nested ignition tube for balance gun

Info

Publication number: CN109579627B
Application number: CN201811474148.3A
Authority: CN
Inventors: 江坤; 王骁; 王浩; 陈常顺; 陶如意; 黄明
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 2018-12-04
Filing date: 2018-12-04
Publication date: 2021-08-03
Anticipated expiration: 2038-12-04
Also published as: CN109579627A

Abstract

The invention discloses a nested point fire transmitting tube for a balance gun, which comprises an ignition head, an inner tube end cover, ignition powder, an ignition medicine box, an inner tube, a medicine bag central tube, a tubular medicine bag, an outer tube and an outer tube end cover, wherein the inner tube is sleeved inside the outer tube, two ends of the inner tube are respectively sleeved inside the inner tube end cover, the medicine bag central tube is arranged inside the inner tube, the ignition medicine box is arranged inside the end head of the inner tube, the bottom of the ignition medicine box is abutted against the end part of the medicine bag central tube, the top of the ignition medicine box is contacted with the inner wall surface of the top of the inner tube end cover, the ignition head penetrates through a through hole in the top of the inner tube end cover to be contacted with the ignition powder, the tubular medicine bag is sleeved outside the medicine bag central tube, the outer tube end cover is provided with a central hole and a plurality of axially penetrating slotted holes which are arranged around the central hole, and the end head of the outer tube is provided with a bayonet groove structure matched with the slotted holes. The ignition and fire transmission pipe has the advantages that the ignition and fire transmission functions of the ignition and fire transmission pipe are separated, so that ignition powder fuel gas can simultaneously rush out the fire transmission holes, the ignition simultaneity of propellant powder is improved, and the nonuniformity of pressure distribution of the propellant chamber is effectively reduced.

Description

Nested ignition tube for balance gun

Technical Field

The invention relates to a artillery charging point fire transmission technology, in particular to a nested point fire transmission pipe which is suitable for a large-diameter long-chamber balance artillery.

Background

The balance gun is a gun which utilizes the balance body and the projectile to move in opposite directions to offset recoil, can be used for launching the large-mass and large-diameter projectile, and is necessary equipment for research and development and examination of various weapons. In order to be able to fire the above-mentioned projectiles and achieve a high firing rate, the total quantity of propellant to be charged and the charge density are increased, so that the chamber diameter and length of the equilibrium cannon are much larger than those of conventional cannons, which puts higher demands on the point-fire-transfer system.

At present, a balance gun usually adopts a modularized charge design, a plurality of same charge modules are filled in a whole charge chamber, and each module is formed by binding a plurality of tubular propellant charges around a central point fire transmission tube. The pipe wall of the central point fire transfer pipe is provided with a certain number of fire transfer holes, the fire transfer holes are sealed by a film before ignition, granular ignition powder is placed in the pipe, and both ends of the pipe are provided with ignition heads. The ignition and fire transmission tube has simple structure, and the ignition and the fire transmission are completed in the same tube, and has the defects that: because the major diameter is bigger, the ignition powder near the two ends of the ignition tube is ignited first, and the gas is rushed out from the ignition holes near the two ends, thus reducing the consistency of ignition and leading to the uneven distribution of the pressure in the powder chamber.

Disclosure of Invention

The invention provides a nested point fire transfer tube for a balance gun, aiming at the problem of low fire transfer consistency of a central point fire transfer tube point of the existing large-diameter long-explosive-chamber balance gun.

The technical solution for realizing the purpose of the invention is as follows:

the utility model provides a nested formula point fire tube for balance gun, includes ignition head, inner tube end cover, ignition powder, ignition medicine box, inner tube, medicine bag center tube, tubulose medicine bag, outer tube end cover, inside the outer tube was located to the inner tube cover, an inner tube end cover is located respectively to the both ends of inner tube cover, the medicine bag center tube set up in inside the inner tube, ignition medicine box is located inside the end of inner tube and its bottom support and lean on tip, the top of medicine bag center tube and the contact of the top internal face of inner tube end cover, ignition powder set up in the ignition medicine box, inner tube end cover top has a through-hole, ignition head passes the through-hole with the ignition powder contact, be equipped with in the tubulose medicine bag, tubulose medicine bag cover locates the outside center tube of medicine bag, the outer tube end cover has a centre bore and centers on a plurality of axial through slotted hole that the centre bore set up, the end of the outer pipe is provided with a bayonet groove structure matched with the slotted hole, the outer pipe end cover can be clamped with the bayonet groove structure through the slotted hole to realize locking, and the inner pipe end cover penetrates through a center hole of the outer pipe end cover and can realize axial positioning.

Further, the bottom end face of the inner pipe end cover is provided with an outer edge extending outwards in the radial direction, and the upper surface of the outer edge is in contact with the bottom face of the outer pipe end cover.

Further, the inner pipe end cover is a steel cylindrical box body.

Further, the ignition medicine box is a cylindrical box body made of combustible resin.

Further, the inner pipe is a pipe body made of combustible resin.

Further, the tubular medicine bag is a bag sewn by an inner layer of gauze and an outer layer of gauze.

Further, the outer tube is a tube body made of combustible resin, and a plurality of fire transmission holes are formed in the surface of the outer tube.

Furthermore, the two ends of the nested point fire tubes for the balance gun are symmetrically arranged.

Compared with the prior art, the invention has the advantages that:

(1) the ignition and fire transmission pipe with the nested structure of the inner pipe and the outer pipe is used, so that the ignition powder can be fully combusted to break the inner pipe, and then the gas can be freely conducted in the cavity between the inner pipe and the outer pipe, so that the gas can be simultaneously flushed out of all the fire transmission holes, the ignition consistency of the propellant powder can be improved, and the ballistic performance and the launching safety of the gun can be improved;

(2) the invention adopts the structure of nesting the inner pipe and the outer pipe and screwing and self-locking the end cover, avoids using glue to fix various non-metal parts and is beneficial to the assembly and disassembly on the test site.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view showing the structure of a nested point fire tube for a balance gun according to the present invention.

Fig. 2 is a schematic view of the outer tube structure.

Fig. 3 is a schematic structural view of an end cap of an outer tube.

Detailed Description

The invention is further described with reference to the accompanying drawings.

As shown in fig. 1-3, the nested ignition and transmission tube for a balance gun of the invention comprises an electric ignition head 1, an inner tube end cover 2, an ignition powder 3, an ignition medicine box 4, an inner tube 5, a medicine bag central tube 6, a tubular medicine bag 7, an outer tube 8 and an outer tube end cover 9. The electric ignition head 1 is a semiconductor bridge type electric ignition head, and is respectively arranged at two ends of the fire transfer tube. The inner tube end cover 2 is a steel cylindrical box body, the length of the inner tube end cover is 17mm, the inner diameter of the inner tube end cover is 41mm, the outer diameter of the inner tube end cover is 45mm, the diameter of the protruding outer edge of the inner tube end cover is 55mm, and the closed end of the inner tube end cover is provided with an internal thread hole for fixing the electric ignition head 1. The ignition charge 3 is black powder, 50g each. The ignition medicine box 4 is a cylindrical box body made of combustible resin, is 17mm long, 34mm in inner diameter and 37mm in outer diameter, and is internally provided with ignition powder 3. The inner pipe 5 is a pipe body made of combustible resin, and has the length of 496mm, the inner diameter of 37mm and the outer diameter of 41 mm. The central tube 6 of the medicine bag is made by rolling celluloid sheet, and has a length of 462mm, an inner diameter of 13mm and an outer diameter of 15 mm. The tubular medicine bag 7 is a bag sewn by an inner layer of gauze and an outer layer of gauze, has the length of about 300mm, is filled with 250g of black powder inside, and is sleeved on the medicine bag central tube 6 after being sealed. The outer tube 8 is a tube body made of combustible resin, the length of the tube body is 500mm, the inner diameter of the tube body is 70mm, the outer diameter of the tube body is 80mm, 11 groups of fire transmission holes with the diameter of 15mm are formed in the tube wall, the fire transmission holes are arranged in a crossed mode and are spaced at a distance of 35mm, bayonet grooves are formed in the two ends of the outer tube, and the specific structure is shown in figure 2. The outer tube end cover 9 is a disc made of combustible resin, is 5mm thick and 90mm in diameter, is provided with a central hole 9-1 with the diameter of 45mm in the middle, is provided with an annular groove 9-2 around the central hole, and has the size equivalent to that of the bayonet grooves at the two ends of the outer tube.

During specific implementation, the two binding posts of the electric ignition head 1 are in short connection and are fixed on the inner tube end cover 2 through threads, one ignition medicine box 4 is plugged into one end of the inner tube with an opening facing outwards, ignition medicine 3 is poured into the ignition medicine box 4, and then the inner tube end cover 2 is covered on the inner tube to prevent the ignition medicine 3 from being scattered out; then, the sewed tubular medicine bag 7 is sleeved on the medicine bag central tube 6 and is plugged into the inner tube 5 together, so that the medicine bag central tube 6 is propped against the ignition medicine box 4, and the tubular medicine bag 7 is ensured to be positioned at the axial middle position of the inner tube 5; then another ignition medicine box 4 with an opening facing outwards is inserted into the inner tube 5 and is abutted against the medicine bag central tube 6, so that the position of the medicine bag central tube 6 in the inner tube 5 is fixed; after the ignition charge 3 has been poured into the ignition charge case 4, the other inner tube end cap 2 is closed, so that the assembly of the inner tube section is completed. Then, the assembled inner pipe part is inserted into a central hole of an outer pipe end cover 9, the outer edge of the inner pipe end cover abuts against the end face of the outer pipe end cover 9, then the inner pipe part with the outer pipe end cover 9 is inserted into the outer pipe 8, the outer pipe end cover 9 and the outer pipe 8 are screwed together through a bayonet, finally, the other outer pipe end cover 9 is covered at the other end of the outer pipe 8 and is screwed for self locking, and therefore the whole point fire transfer pipe is assembled.

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.

Claims

1. The utility model provides a balance gun is with nested formula point ignition pipe, its characterized in that, includes ignition head (1), inner tube end cover (2), ignition powder (3), ignition medicine box (4), inner tube (5), medicine bag center tube (6), tubulose medicine bag (7), outer tube (8), outer tube end cover (9), inner tube (5) cover is located inside outer tube (8), the both ends of inner tube (5) are respectively overlapped and are located in an inner tube end cover (2), medicine bag center tube (6) set up in inside inner tube (5), ignition medicine box (4) are located inside the end of inner tube (5) and its bottom supports and lean on tip, the top of center tube (6) and the contact of the top internal face of inner tube end cover (2), ignition powder (3) set up in ignition medicine box (4), inner tube end cover (2) top has a through-hole, the ignition head (1) penetrates through the through hole to be in contact with the ignition powder (3), gunpowder is filled in the tubular medicine bag (7), the tubular medicine bag (7) is sleeved outside the medicine bag central tube (6), the outer tube end cover (9) is provided with a central hole (9-1) and a plurality of axially-penetrating slotted holes (9-2) which are arranged around the central hole (9-1), the end of the outer tube (8) is provided with a bayonet groove structure matched with the slotted holes (9-2), the outer tube end cover (9) can be clamped with the bayonet groove structure through the slotted holes (9-2) to realize locking, and the inner tube end cover (2) penetrates through the central hole (9-1) of the outer tube end cover (9) and can realize axial positioning;

the bottom end face of the inner pipe end cover (2) is provided with an outer edge extending outwards in the radial direction, and the upper surface of the outer edge is in contact with the bottom face of the outer pipe end cover (9).

2. Nested squib for a balance gun according to claim 1, characterized in that the inner tube end cap (2) is a steel cylindrical box.

3. Nested squib for a balance gun according to claim 1, characterized in that the cartridge (4) is a cylindrical box made of a combustible resin.

4. Nested point-fire tube for a balance gun according to claim 1, characterized in that the inner tube (5) is a tubular body made of combustible resin.

5. The nested point fire tube for a balance gun according to claim 1, characterized in that the tubular pouch (7) is a bag sewn by an inner layer of gauze and an outer layer of gauze.

6. The nested point fire tube for a balance gun according to claim 1, wherein the outer tube (8) is a tube body made of a combustible resin, and a plurality of fire transmission holes are formed in the surface of the outer tube (8).

7. The nested point fire tube for a balance gun according to any one of claims 1 to 6, characterized in that the nested point fire tube for a balance gun is symmetrically arranged at both ends.