CN112985199B - Detonator with same-end axial needling flame composite input - Google Patents
Detonator with same-end axial needling flame composite input Download PDFInfo
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- CN112985199B CN112985199B CN202110206400.8A CN202110206400A CN112985199B CN 112985199 B CN112985199 B CN 112985199B CN 202110206400 A CN202110206400 A CN 202110206400A CN 112985199 B CN112985199 B CN 112985199B
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- explosive
- needling
- powder
- ignition
- detonator
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 239000002360 explosive Substances 0.000 claims abstract description 69
- 239000000843 powder Substances 0.000 claims abstract description 43
- 230000000977 initiatory effect Effects 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000004080 punching Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 238000010304 firing Methods 0.000 claims description 8
- 238000004880 explosion Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 2
- 230000005284 excitation Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Finger-Pressure Massage (AREA)
Abstract
The invention discloses a detonator with the same-end axial needling flame composite input, which comprises a tube shell, needling powder, a sealing ring, ignition powder, initiating explosive, high explosive and a reinforcing cap. The head of the tube shell is closed, the bottom is open, a groove is formed in the center of the inner wall of the closed end, a plurality of eccentric through holes with the same size are distributed at equal intervals in a ring shape by taking the groove as the center, the needle punching explosive, the initiating explosive and the high explosive are sequentially filled in the tube shell, the head of the needle punching explosive stretches into the groove, the ignition explosive is in a cylindrical shape and sleeved on the head of the needle punching explosive and the initiating explosive, the head of the ignition explosive is in contact with the sealing ring, the reinforcing cap wraps the bottom of the high explosive, and the closing-in limit is realized through the tube shell. The invention adopts a composite structure with a needling ignition center and a flame ignition ring side at the input end to replace the single ignition mode of the original detonator, realizes the axial redundant input of needling and flame at the same end, can simultaneously adapt to needling input excitation and flame input excitation, improves the reliability of the fuze action and realizes the functions of self-destruction and fire insulation of the fuze.
Description
Technical Field
The invention belongs to the technology of initiating explosive devices, and particularly relates to a detonator with same-end axial needling flame composite input.
Background
The explosive element is an important component of initiating explosive devices. With the improvement of fuze performance, improvement of functions and improvement of reliability requirements, the demands for variety and number of explosive elements are increasing. But from the perspective of flame-proof safety design, the smaller the number of explosive elements inside the fuse is, the better. It is therefore desirable that the fuse explosive element be capable of being singulated into composites.
CN2673862 discloses a bidirectional flame detonator, wherein both ends of the detonator shell are provided with ignition holes, and each end of the detonator can be used as a flame input end without directional requirements. The detonator has bidirectional ignition capability, but as the primary explosive is arranged in the middle of the detonator and does not have high explosive charge, the main flow application requirement of initiating the subsequent high explosive charge explosion element is difficult to meet.
In general, the practical needled detonator or flame detonator at the present stage is almost of a single ignition structure, which is not beneficial to improving the reliability of the fuze action and is also not beneficial to realizing the design of the fuze self-destruction and fire insulation functions.
Disclosure of Invention
The invention aims to provide a detonator with the same-end axial needling flame composite input so as to solve the problem of single firing mode of the traditional needling detonator and flame detonator.
The technical solution for realizing the purpose of the invention is as follows: the detonator with the same-end axial needling flame composite input comprises a tube shell, needling powder, a sealing ring, ignition powder, initiating powder, high explosive and a reinforcing cap. The device comprises a shell, a sealing ring, a plurality of eccentric through holes, a needle punching agent, an initiating explosive and a high explosive, wherein the head of the shell is a closed end, the bottom of the shell is an open end, the center of the inner wall of the closed end is provided with a groove to form a weak part, the sealing ring is used as the center to form a plurality of eccentric through holes with the same size in an annular and equidistant mode, the needle punching agent, the initiating explosive and the high explosive are sequentially filled in the shell, the head of the needle punching agent stretches into the groove, the initiating explosive is cylindrical, the initiating explosive is sleeved on the outer walls of the needle punching agent and the initiating explosive, the head of the initiating explosive is contacted with the sealing ring, the eccentric through holes are sealed by the sealing ring, and the bottom of the initiating explosive is limited by the initiating explosive; the bottom of the high explosive is wrapped by the reinforcing cap and is limited and fixed through the closing-in of the bottom of the tube shell.
After the needling powder is punched by a firing pin or a firing pin of the fuze trigger device, the needling powder is punched to ignite the ignition powder, so that the initiating powder is detonated, the initiating powder is detonated to detonate the high explosive, and the detonator completes explosion output; the flame generated by the fuze ignition mechanism is transmitted into the axial through hole of the tube shell, the sealing ring is ignited through the axial through hole, and then the ignition powder is ignited, the ignition powder detonates the initiating explosive, the initiating explosive detonates the strong explosive, and the detonator completes explosion output; the two input modes are mutually backup and complementary and do not influence each other.
Compared with the prior art, the invention has the remarkable advantages that: (1) The invention adopts a needling ignition and flame ignition combined mode at the input end to replace the single ignition mode of the original detonator, realizes the redundant input of needling flame at the same end along the axial direction, can enhance the input excitation adaptability of the detonator, is beneficial to the simplification and miniaturization of the inner cavity structure of the detonator, improves the reliability of the action of the detonator and realizes the self-destruction and fire-insulation functions of the detonator.
(2) The invention has simple structure, is beneficial to processing and is convenient to install.
Drawings
FIG. 1 is a schematic diagram of the structure of the detonator of the present invention with the same-end axial needling flame composite input.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a detonator with the same-end axial needling flame composite input comprises a tube shell 1, needling powder 2, a sealing ring 3, ignition powder 4, initiating explosive 5, high explosive 6 and a reinforcing cap 7. The head of the tube shell 1 is a closed end, the bottom of the tube shell is an open end, a groove is formed in the center of the inner wall of the closed end to form a weak part, and a plurality of eccentric through holes with the same size are distributed on the closed end face in an annular shape at equal intervals by taking the groove as the center. The needling powder 2, the initiating explosive 5 and the high explosive 6 are sequentially filled in the tube shell 1, the head of the needling powder 2 stretches into the groove, the initiating explosive 5 is a second-order cylinder and comprises a first cylinder and a second cylinder, the diameter of the first cylinder is smaller than that of the second cylinder, a step surface is formed between the first cylinder and the second cylinder, the bottom of the needling powder 2 is in contact with the first cylinder, the ignition powder 4 is cylindrical, the ignition powder 4 is sleeved on the outer walls of the needling powder 2 and the first cylinder, the head of the ignition powder 4 is in contact with the sealing ring 3, the sealing ring 3 seals the eccentric through hole, and the bottom of the ignition powder 4 is limited by the step surface. The bottom of the high explosive 6 is wrapped by the reinforcing cap 7, the high explosive is limited and fixed through the closing-in of the bottom of the pipe shell 1, and after the closing-in of the bottom of the pipe shell 1, the joint of the pipe shell 1 and the reinforcing cap 7 is sealed through the sealing paint 8.
The sealing ring 3 is made of flame sensitive materials, such as a nitro film or other flame sensitive structural materials.
The primary explosive 5 is remote from the reinforcement cap 7 and is not in contact with the reinforcement cap 7.
The heads described in this invention are all left-hand positions in fig. 1 and the bottoms are all right-hand positions.
The working process of the detonator with the same-end axial needling flame composite input comprises the following steps:
(1) The needling powder 2 is positioned at the head (weak part) of the tube shell 1, after the needling powder 2 is punched by a firing pin or firing pin of the fuze triggering device, the needling powder 2 is punched to ignite the ignition powder 4, so as to further detonate the initiating powder 5, the initiating powder 5 detonates the high explosive 6 again, and the detonator completes explosive output.
(2) The flame generated by the fire cap or the ignition head (tube) or the relay tube of the fuze ignition mechanism is transmitted into the axial through hole of the tube shell 1, the sealing ring 3 is ignited through the axial through hole, the ignition powder 4 is further ignited, the ignition powder 4 is then detonated to the initiating explosive 5, the initiating explosive 5 is detonated to the high explosive 6, and the detonator completes the explosive output.
The two input modes are mutually backup and supplement, do not affect each other, and are not used in sequence.
The detonator with the same-end axial needling flame composite input combines the traditional needling ignition and flame ignition. Compared with the traditional needled detonator and flame detonator, the needled flame redundant input detonator at the same end has two firing modes of needling and flame, improves the input excitation adaptability of the detonator, and greatly reduces the possibility of fuzzing under extreme conditions.
Claims (4)
1. The detonator with the same-end axial needling flame composite input is characterized in that: comprises a tube shell (1), a needling powder (2), a sealing ring (3), an ignition powder (4), an initiating powder (5), a high explosive (6) and a reinforcing cap (7);
the device is characterized in that the head of the tube shell (1) is a closed end, the bottom of the tube shell is an open end, a groove is formed in the center of the inner wall of the closed end to form a weak part, a plurality of eccentric through holes with the same size are distributed on the closed end at equal intervals by taking the groove as the center, the needle punching powder (2), the initiating explosive (5) and the high explosive (6) are sequentially filled in the tube shell (1), the head of the needle punching powder (2) stretches into the groove, the initiating explosive (4) is cylindrical, the initiating explosive (4) is sleeved on the outer walls of the head of the needle punching powder (2) and the initiating explosive (5), the head of the initiating explosive (4) is in contact with the sealing ring (3), the sealing ring (3) seals the eccentric through holes, and the bottom of the initiating explosive (4) is limited by the initiating explosive (5); the bottom of the high explosive (6) is wrapped by the reinforcing cap (7) and is limited and fixed through the closing-in of the bottom of the tube shell (1);
after the needling powder (2) is punched by a firing pin or a firing pin of a fuze trigger device, the needling powder (2) is punched to ignite the ignition powder (4), so that the initiating powder (5) is detonated, the initiating powder (5) is detonated to detonate the high explosive (6) again, and the detonator finishes explosion output; the flame generated by the fuze ignition mechanism is transmitted into the axial through hole of the tube shell (1), the sealing ring (3) is ignited through the axial through hole, the ignition powder (4) is further ignited, the ignition powder (4) detonates the initiating explosive (5), the initiating explosive (5) detonates the high explosive (6) again, and the detonator completes explosion output;
the input end adopts a mode of combining needling ignition and flame ignition, and is mutually backed up and supplemented without mutual influence.
2. The co-terminal axial pin flame composite input detonator of claim 1, wherein: the initiating explosive (5) is a second-order cylinder and comprises a first cylinder and a second cylinder, the diameter of the first cylinder is smaller than that of the second cylinder, a step surface is formed between the first cylinder and the second cylinder, the bottom of the needling explosive (2) is in contact with the first cylinder, the ignition explosive (4) is sleeved on the outer walls of the needling explosive (2) and the first cylinder, and the bottom of the ignition explosive (4) is limited through the step surface.
3. The co-terminal axial pin flame composite input detonator of claim 1 or 2, wherein: after the bottom of the tube shell (1) is closed, the joint of the tube shell (1) and the reinforcing cap (7) is sealed by sealing paint (8).
4. The co-terminal axial pin flame composite input detonator of claim 1, wherein: the sealing ring (3) is made of flame sensitive materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110206400.8A CN112985199B (en) | 2021-02-24 | 2021-02-24 | Detonator with same-end axial needling flame composite input |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110206400.8A CN112985199B (en) | 2021-02-24 | 2021-02-24 | Detonator with same-end axial needling flame composite input |
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| Publication Number | Publication Date |
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| CN112985199A CN112985199A (en) | 2021-06-18 |
| CN112985199B true CN112985199B (en) | 2024-04-05 |
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| CN202110206400.8A Active CN112985199B (en) | 2021-02-24 | 2021-02-24 | Detonator with same-end axial needling flame composite input |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113390306B (en) * | 2021-06-24 | 2022-05-20 | 南京理工大学 | Fuse bore ignition mechanism adopting detonator and space explosion-proof principle |
| CN113624078B (en) * | 2021-08-06 | 2023-01-13 | 南京理工大学 | Long-delay acupuncture explosion element with flush input end face for fuze |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6289813B1 (en) * | 1999-02-18 | 2001-09-18 | Livbag Snc | Electropyrotechnic igniter with enhanced ignition reliability |
| CN1847776A (en) * | 2005-04-11 | 2006-10-18 | 北京理工大学 | Heat resisting and pressure resisting safe electric detonator for oil well |
| CN106460489A (en) * | 2014-04-03 | 2017-02-22 | 欧文石油工具有限合伙公司 | Redundant firing system for wellbore tools |
| CN109029163A (en) * | 2018-08-18 | 2018-12-18 | 南京理工大学 | A kind of miniaturization insensitiveness Nonel detonator |
-
2021
- 2021-02-24 CN CN202110206400.8A patent/CN112985199B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6289813B1 (en) * | 1999-02-18 | 2001-09-18 | Livbag Snc | Electropyrotechnic igniter with enhanced ignition reliability |
| CN1847776A (en) * | 2005-04-11 | 2006-10-18 | 北京理工大学 | Heat resisting and pressure resisting safe electric detonator for oil well |
| CN106460489A (en) * | 2014-04-03 | 2017-02-22 | 欧文石油工具有限合伙公司 | Redundant firing system for wellbore tools |
| CN109029163A (en) * | 2018-08-18 | 2018-12-18 | 南京理工大学 | A kind of miniaturization insensitiveness Nonel detonator |
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| CN112985199A (en) | 2021-06-18 |
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