CN112985200A

CN112985200A - Detonator with same-end axial needling flame redundant input

Info

Publication number: CN112985200A
Application number: CN202110206611.1A
Authority: CN
Inventors: 王雨时; 余晟冉
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-06-18

Abstract

The invention discloses a detonator with the same end and the axial needling flame redundant input function. The novel high explosive gas-liquid separation device comprises a shell, a first tubular piece, a second tubular piece, a sealing ring, a first tubular piece, a second tubular piece, an ignition powder, a primary explosive and a high explosive, wherein the first tubular piece is provided with a bottom closing opening, the second tubular piece is provided with a bottom closing opening, the first tubular piece is provided with a bottom closing opening, the second tubular piece is provided. The invention adopts the structure of redundant input firing of the pinprick flame at the axial direction of the input end to replace the single firing mode of the original detonator, has simple charging structure, is beneficial to medicament assembly, can adapt to the pinprick input excitation and the flame input excitation, is beneficial to the simplification and miniaturization of the inner cavity structure of the detonator, is also beneficial to the improvement of the reliability of the detonator action, and is also beneficial to the realization of the self-destruction and fire-stopping functions of the detonator.

Description

Detonator with same-end axial needling flame redundant input

Technical Field

The invention belongs to the technology of initiating explosive devices, and particularly relates to a detonator with the same end and the axial needling redundant flame input.

Background

The primer is an important component of initiating explosive devices. With the improvement of fuse performance, the improvement of functions and the improvement of reliability requirements, the demand for the variety and the number of explosion elements is increasing. However, from the viewpoint of explosion-proof safety design, the smaller the number of explosive elements in the fuze, the better the fuze. It is therefore desirable that the fuse explosion element be capable of being singulated into composites.

CN2673862 discloses a bidirectional flame detonator, in which ignition holes are arranged at both ends of a detonator shell, and each end of the detonator can be used as a flame input end, so that there is no directional requirement. Although the detonator has the bidirectional firing capability, the primary explosive is arranged in the middle of the detonator and no high explosive is charged, so that the main application requirement of initiating the subsequent high explosive charging explosive element is difficult to meet.

Generally, the acupuncture detonator or the flame detonator which is practical at the present stage is almost a single ignition structure, is not beneficial to improving the reliability of the fuse action and is also not beneficial to realizing the self-destruction and fire-insulating functional design of the fuse.

Disclosure of Invention

The invention aims to provide a detonator with the same end and the axial needling redundant input of flame, which solves the problem that the traditional needling detonator and the traditional flame detonator have single ignition mode.

The technical solution for realizing the purpose of the invention is as follows: a detonator with coaxial needling flame redundant input at the same end comprises a tube shell, needling powder, a sealing ring, ignition powder, initiating powder, high explosive and a reinforcing cap. The novel high explosive gas-liquid separation device comprises a shell, a first tubular piece, a second tubular piece, a sealing ring, a first tubular piece, a second tubular piece, an ignition powder, a primary explosive and a high explosive, wherein the first tubular piece is provided with a bottom closing opening, the second tubular piece is provided with a bottom closing opening, the first tubular piece is provided with a bottom closing opening, the second tubular piece is provided.

After the acupuncture powder is stabbed by the firing pin or firing pin of the detonator triggering device, the acupuncture powder is stabbed and ignited to ignite the ignition powder, so that the initiation powder is detonated, the initiation powder detonates high explosive, and the detonator finishes explosion output; the flame generated by the fuze ignition mechanism is transmitted to the axial through hole positioned in the tube shell, the sealing ring is ignited through the axial through hole so as to ignite the ignition powder, the ignition powder detonates the primary explosive, the primary explosive detonates the high explosive, and the detonator finishes the explosion output; the two input modes are mutually backup and supplementary and do not influence each other.

Compared with the prior art, the invention has the remarkable advantages that: the detonator adopts a redundant input mode of needle-prick ignition and flame ignition at the input end to replace the single ignition mode of the original detonator, has simple charging structure, is beneficial to medicament assembly, can enhance the input excitation adaptability of the detonator, is beneficial to simplifying and miniaturizing the inner cavity structure of the detonator, is beneficial to improving the reliability of the action of the detonator, and is also beneficial to realizing the self-destruction and fire-stopping functions of the detonator.

Drawings

FIG. 1 is a schematic structural diagram of a coaxial needle-punched flame redundant input detonator of the present invention.

Detailed Description

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

As shown in figure 1, the detonator with the same end and the axial needling flame redundant input comprises a shell 1, a needling powder 2, a sealing ring 3, an ignition powder 4, a primary explosive 5, a high explosive 6 and a reinforcing cap 7. The tube shell 1 is a second-order thin-walled circular tube, the second-order thin-walled circular tube comprises a first tubular part and a second tubular part, the first tubular part is large in diameter, two ends of the first tubular part are open, the second tubular part is small in diameter, the head of the second tubular part is closed, and a plurality of axial through holes which are the same in size are distributed on the step surfaces of the two tubular parts in an annular shape at equal intervals. Acupuncture powder 2, ignition powder 4, initiating explosive 5, high explosive 6 load in tube 1 in proper order, and wherein acupuncture powder 2 is located the second tubular piece, and ignition powder 4 is the second order cylinder, the second order cylinder includes first cylinder and second cylinder, and first cylinder diameter is greater than the second cylinder, and the second cylinder stretches into second tubular piece and acupuncture powder 2 contact, and first cylinder is located the first tubular piece of tube 1 and contacts with initiating explosive 5, and 3 covers on the second cylinder of sealing washer, and is located between the step face of tube 1 and the second cylinder. Strengthen the cap 7 cover in 6 bottoms of high explosive, through first tubulose bottom binding off spacing fixed, the first tubulose bottom binding off of tube 1 back, through the junction of sealed paint 8 sealed tube 1 and enhancement cap 7.

Further, the acupuncture medicine 2 is located in the second tubular part of the tube shell 1 and receives acupuncture excitation input or impact excitation input, the ignition medicine 4 is located at the step and receives flame excitation input, and the charge structures and respective input excitation characteristics of the acupuncture medicine 2 and the ignition medicine 4 are not affected by each other.

Further, the sealing ring 3 is annular, the outer diameter of the sealing ring is the same as the inner diameter of the first tubular part of the tube shell 1, and the sealing ring 3 blocks the axial through hole at the step of the tube shell 1. The sealing ring 3 is made of flame sensitive materials, such as nitro films or other structural materials sensitive to flame, so that the complete charging structure of the ignition powder 4 can be ensured, and the input of the point ignition powder 4 by the needle punching powder 2 is not influenced.

The head described in the present invention is located at the left side in fig. 1, and the bottom is located at the right side.

The working process of the detonator with the same-end axial needling flame redundant input comprises the following steps:

(1) the acupuncture powder 2 is located the head (weak part) of tube 1, and acupuncture powder 2 receives the firing pin or the firing pin of detonator trigger device to stab the back, and acupuncture powder 2 is pricked and is sent out, ignites ignition powder 4, and then detonates initiating explosive 5, and initiating explosive 5 detonates high explosive 6 again, and the detonator accomplishes the explosion output.

(2) The flame generated by a fire cap, an ignition head (tube) or a relay tube of the fuse ignition mechanism is transmitted to an axial through hole on the step surface of the tube shell 1, the sealing ring 3 is ignited through the axial through hole so as to ignite the ignition powder 4, the ignition powder 4 then detonates the primary explosive 5, the primary explosive 5 detonates the high explosive 6, and the detonator finishes the explosive output.

The two input modes are mutually backup (supplement) and do not influence each other, and the use is not in sequence.

The detonator with the same-end axial needling flame redundant input function combines the traditional needling ignition and the traditional flame ignition. Compared with the traditional acupuncture detonator and the traditional flame detonator, the detonator with the same-end axial acupuncture flame redundant input has two ignition modes of acupuncture and flame, improves the input excitation adaptability of the detonator, and greatly reduces the possibility of igniting misfire in extreme cases.

Claims

1. The utility model provides a detonator of redundant input of homopolar axial acupuncture flame which characterized in that: comprises a tube shell (1), a needling powder (2), a sealing ring (3), an ignition powder (4), a primary explosive (5), a high explosive (6) and a reinforcing cap (7);

the acupuncture powder (2), the ignition powder (4), the initiating powder (5) and the high explosive (6) are sequentially filled in the tube shell (1), wherein the acupuncture powder (2) is positioned at the head of the tube shell (1), the tube shell (1) is in a shape of a second-order thin-wall circular tube, a plurality of axial through holes with the same size are distributed on the step surface in an annular shape at equal intervals, a sealing ring (3) is sleeved on the ignition powder (4) to seal the axial through holes, a reinforcing cap (7) is sleeved at the bottom of the high explosive (6) and is limited and fixed by the closing-up at the bottom end of a first tubular part;

after the acupuncture powder (2) is stabbed by a firing pin or firing pin of the fuze trigger device, the acupuncture powder (2) is punctured and ignited, the ignition powder (4) is ignited, the primary powder (5) is further detonated, the primary powder (5) detonates high explosive (6), and the detonator finishes explosion output; the flame generated by the fuze ignition mechanism is transmitted to the axial through hole in the tube shell (1), the sealing ring (3) is ignited through the axial through hole to ignite the ignition powder (4), the ignition powder (4) detonates the primary explosive (5), the primary explosive (5) detonates the high explosive (6), and the detonator finishes the explosion output; the two input modes are mutually backup and supplementary and do not influence each other.

2. The detonator of claim 1 having a redundant input of flame with a coaxial needle, wherein: the tube shell (1) comprises a first tubular part and a second tubular part which are connected, the first tubular part is large in diameter, two ends of the first tubular part are open, the second tubular part is small in diameter, the head of the second tubular part is closed, and a plurality of axial through holes which are the same in size are distributed on step surfaces of the two tubular parts in an annular shape at equal intervals.

3. The detonator of claim 2 having a redundant input of flame with a coaxial needle, wherein: acupuncture powder (2) is located the second tubular piece, and ignition powder (4) are the second order cylinder, the second order cylinder includes first cylinder and second cylinder, and first cylinder diameter is greater than the second cylinder, and the second cylinder stretches into second tubular piece and acupuncture powder (2) contact, and first cylinder is located the first tubular piece of tube (1) and contacts with initiating explosive (5), and sealing washer (3) cover is on the second cylinder, and is located between the step face and the second cylinder of tube (1).

4. The detonator of any one of claims 1 to 3 having a redundant input of flame by axial needle punching, wherein: after the bottom end of the tube shell (1) is closed, the joint of the tube shell (1) and the reinforcing cap (7) is sealed through a sealing paint (8).

5. The detonator of any one of claims 1 to 3 having a redundant input of flame by axial needle punching, wherein: the sealing ring 3 is made of flame sensitive material.