CN114105720A - Non-priming-agent flame detonator containing insensitive ignition powder and Taian explosive - Google Patents
Non-priming-agent flame detonator containing insensitive ignition powder and Taian explosive Download PDFInfo
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- CN114105720A CN114105720A CN202111465576.1A CN202111465576A CN114105720A CN 114105720 A CN114105720 A CN 114105720A CN 202111465576 A CN202111465576 A CN 202111465576A CN 114105720 A CN114105720 A CN 114105720A
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- explosive
- ignition powder
- detonator
- primer
- insensitive
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- 239000002360 explosive Substances 0.000 title claims abstract description 77
- 239000000843 powder Substances 0.000 title claims abstract description 47
- 239000003795 chemical substances by application Substances 0.000 title description 3
- 238000005474 detonation Methods 0.000 claims abstract description 11
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 22
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 11
- 229910052796 boron Inorganic materials 0.000 claims description 11
- 235000010333 potassium nitrate Nutrition 0.000 claims description 11
- 239000004323 potassium nitrate Substances 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 18
- 239000003380 propellant Substances 0.000 claims 6
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000000977 initiatory effect Effects 0.000 description 11
- 238000004880 explosion Methods 0.000 description 5
- YSIBQULRFXITSW-OWOJBTEDSA-N 1,3,5-trinitro-2-[(e)-2-(2,4,6-trinitrophenyl)ethenyl]benzene Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1\C=C\C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O YSIBQULRFXITSW-OWOJBTEDSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- IXHMHWIBCIYOAZ-UHFFFAOYSA-N styphnic acid Chemical compound OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C(O)=C1[N+]([O-])=O IXHMHWIBCIYOAZ-UHFFFAOYSA-N 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- LNAWIXGXVIGLOJ-UHFFFAOYSA-N hydrazine nickel(2+) dinitrate Chemical compound [N+](=O)([O-])[O-].NN.[Ni+2].[N+](=O)([O-])[O-] LNAWIXGXVIGLOJ-UHFFFAOYSA-N 0.000 description 1
- 238000013095 identification testing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
Abstract
The invention discloses a non-primary explosive flame detonator filled with insensitive ignition powder and Taian explosive, which comprises a pipe shell, a silk pad, the insensitive ignition powder, the Taian explosive and a bottom cap. The silk pad, the insensitive ignition powder, the Taian explosive and the bottom cap are sequentially arranged in the tube shell, the insensitive ignition powder replaces the primary ignition powder and the sensitive ignition powder, and the tube shell and the bottom cap which are properly thickened provide strong restraint to facilitate detonation growth. The invention has small overall dimension, simple structure, low mechanical sensitivity and good safety in manufacturing, application and assembly and explosive treatment.
Description
Technical Field
The invention belongs to the technical field of initiating explosive devices, and particularly relates to a priming explosive-free flame detonator filled with insensitive ignition powder and Taian explosive.
Background
The flame detonator is also called fire detonator and is widely applied in the technical field of civil blasting and the technical field of ammunition and fuze. The flame detonator usually uses sensitive insensitive ignition powder and initiating explosive, which not only causes the danger of accidental ignition and explosion during the manufacture, use and assembly, but also causes the sensitive insensitive ignition powder such as trinitroresorcinol lead and the initiating explosive such as lead azide and nickel hydrazine nitrate to be easily influenced and accidentally ignited once the detonator is inhibited by the extreme environment such as accidental impact, rolling, extrusion, gunshot, fragment striking and the like or is exposed in a complex electromagnetic environment.
The detonator without the initiating explosive is replaced by the detonator with the relatively insensitive initiating explosive and the relatively insensitive ignition explosive instead of the initiating explosive, and the detonation is realized by utilizing the phenomenon that the self combustion of the detonator is converted into the detonation. Most of the prior detonators without initiating explosive are independently used as insensitive ignition powder and output powder (such as Chinese patents CN212320553U and CN 209069124U), although certain insensitivity is realized, the structure is complex and the cost is high, or reliable initiation is difficult to ensure, and the position of loose powder is influenced by the posture and the orientation when the detonators are used, so that the power output is influenced. Therefore, the detonator is not widely applied, and needs to be improved, so that the detonator without the initiating explosive has certain insensitivity, can reliably initiate and forms stable detonation output.
Although the tai 'an explosive is insensitive to the primary explosive, the sensitivity of the tai' an explosive is still higher than that of the Tedi explosive, and the tai 'an explosive cannot pass a safety identification test specified by GJB2178A-2005 (method for testing safety of booster), so that the safety of a detonator without the primary explosive, which is provided with the tai' an explosive, is only relatively improved and is not as high as the degree of allowing in-line application in a fuze explosion sequence specified by GJB373B-2019 (design criteria for fuze safety), and the like, and the application in the fuze still needs explosion suppression.
The boron/potassium nitrate ignition powder is insensitive ignition powder, the mechanical sensitivity of the boron/potassium nitrate ignition powder is not higher than that of Tetrole, is far lower than that of initiating powder and also lower than that of Taian explosive, but the flame sensitivity of the boron/potassium nitrate ignition powder is better than that of Taian explosive. GJB2865-1997 safety design criteria for rocket and missile solid rocket engine ignition systems has listed it as a safe agent that allows in-line application in rocket and missile solid rocket engine ignition systems, and thus does not need explosion suppression when applied in fuzes.
Disclosure of Invention
The invention aims to provide a primer-free flame detonator which ensures safe manufacture and use and is provided with insensitive ignition powder and Taian explosive.
The technical solution for realizing the purpose of the invention is as follows: a kind of non-initiating explosive flame detonator which is loaded with insensitive ignition powder and Taian explosive comprises a tube shell, a silk pad, insensitive ignition powder, a first Taian explosive, a second Taian explosive and a bottom cap; the top surface of the tube shell is sealed, the bottom surface of the tube shell is open, a fire transfer hole is formed in the center of the top surface of the tube shell, a silk pad, insensitive ignition powder, first safety explosive, second safety explosive and a bottom cap are sequentially arranged in the tube shell, the silk pad is located between the insensitive ignition powder and the fire transfer hole of the tube shell, the second safety explosive is located in the bottom cap, and the output end of the detonator is closed or riveted and fixed by the tube shell. The Taian explosive is ignited by the insensitive ignition powder to form a combustion-to-detonation.
The diameter of the top surface fire transfer hole of the tube shell is 0.2-2 mm, and the density of the first Taian explosive is smaller than that of the second Taian explosive.
Compared with the prior art, the invention has the following remarkable advantages:
(1) the mechanical sensitivity is low, the manufacture and the application and the assembly are safe, the detonator can be produced by a detonator guide and booster tube pressing production line, and a special detonator production line is not needed.
(2) The detonation growth period is short, so the height of the detonator is short.
(3) The structure is simple, the production efficiency is high, and the cost is low.
The invention is described in further detail below with reference to the figures and the detailed description.
Drawings
FIG. 1 is a cross-sectional view showing the structure of a primer-free flame detonator containing a non-explosive ignition charge and a Taian explosive according to the present invention.
Detailed Description
As shown in figure 1, the primer-free flame detonator containing insensitive ignition powder and Taian explosive can ensure the safety of manufacture and use of the detonator. The detonator comprises a shell 1, a silk pad 2, a insensitive ignition powder 3, Tai' an explosives 4 and 5 and a bottom cap 6. The tube shell 1 is cylindrical, one end of which is provided with a fire transfer hole as an input end, and the other end of which is opened as an output end. The silk pad 2, the boron/potassium nitrate ignition powder 3, the first explosive 4, the second explosive 5 and the bottom cap 6 are sequentially arranged in the tube shell 1, the silk pad is positioned between the boron/potassium nitrate ignition powder 3 and a fire transfer hole of the tube shell 1, two layers of explosive with gradually increased density are filled below the boron/potassium nitrate ignition powder 3, the bottom cap 6 is finally coated, the tube shell 1 is closed or riveted and fixed at the output end, and the density of the first explosive 4 is smaller than that of the second explosive 5.
The process of converting combustion into detonation is realized by using the combination of the boron/potassium nitrate ignition powder 3 and two layers of Taian explosives with different densities. The fire transfer hole of the tube shell 1 is small (0.2-2 mm, the optimal selection diameter is 1 mm), and the pressure release is less. The tube shell 1 and the bottom cap 6 are made of high-strength steel materials (such as 65 Mn) and are properly thickened (the thickness of the non-central output part of the bottom cap 6 is more than 0.5 mm), so that stronger radial constraint is provided, the combustion conversion detonation growth period of the insensitive ignition powder and the Taian explosive is shortened, and the reliability is improved. The center of the bottom cap 6 is provided with a prefabricated weak surface which is beneficial to the axial output of detonation.
During manufacturing, the silk pad 2 is filled from the output end of the tube shell 1 and then pressed with the insensitive ignition powder 3; the second Taian explosive 5 is firstly pressed into the bottom cap 6, and the first Taian explosive 4 is pressed into the bottom cap 6 after the pressing of the insensitive ignition powder 3 is finished.
The insensitive ignition powder 3 has a density of 1.35 g/cm3~1.45 g/cm3The boron/potassium nitrate ignition powder. The first Taian explosive has a density 4 of 1.45 g/cm3~1.55 g/cm3The second Taian explosive 5 has a density of 1.55 g/cm3~1.65 g/cm3。
When the flame detonator is used, the flame detonator is ignited by the detonating cord sealed at the input end of the flame detonator or by the fire cap, the electric ignition head or the delay tube sealed in the inner cavity of the detonator, and compared with a standard test method for testing and accepting the flame sensitivity in a laboratory, the ignition reliability margin of the flame detonator is larger, so that the insensitive ignition powder is changed from the traditional flame sensitive powder trinitroresorcinol lead into boron/potassium nitrate, and the ignition reliability of the flame detonator cannot be obviously reduced.
The superfine hexanitrostilbene explosive is an explosive which is allowed to be applied in line in a fuze explosion sequence and is specified by GJB373B-2019 'fuze safety design rule' standard. The superfine hexanitrostilbene explosive is used for replacing the tai' an, so that the safety of the flame detonator disclosed by the invention completely meets the requirement that the detonator is used in a fuse in line and does not need to be isolated at ordinary times. However, the hexanitrostilbene explosive has high cost, and the application possibility in the fields of civil blasting equipment and conventional ammunition is not high at present.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a dress is with insensitive ignition powder and no primary explosive flame detonator of tai an explosive which characterized in that: comprises a pipe shell (1), a silk pad (2), a insensitive ignition powder (3), a first explosive (4), a second explosive (5) and a bottom cap (6); the top surface of the tube shell (1) is sealed, the bottom surface is open, a fire transfer hole is formed in the center of the top surface of the tube shell (1), a silk pad (2), insensitive ignition powder (3), first safety explosive (4), second safety explosive (5) and a bottom cap (6) are sequentially arranged in the tube shell (1), the silk pad (2) is located between the insensitive ignition powder (3) and the fire transfer hole of the tube shell (1), the second safety explosive (5) is located in the bottom cap (6), the output end of a detonator is closed or riveted and fixed by the tube shell (1), and the density of the first safety explosive (4) is smaller than that of the second safety explosive (5).
2. The primer-free primer mix detonator of claim 1 wherein the primer mix is a mixture of a non-ignitable propellant and a tai-an explosive, and wherein: the insensitive ignition powder (3) adopts boron/potassium nitrate.
3. The primer-free primer mix detonator of claim 1 wherein the primer mix is a mixture of a non-ignitable propellant and a tai-an explosive, and wherein: the diameter of the top surface fire transfer hole of the tube shell (1) is 0.2-2 mm.
4. The primer-free primer mix detonator of claim 1 wherein the primer mix is a mixture of a non-ignitable propellant and a tai-an explosive, and wherein: the pipe shell (1) and the bottom cap (6) are made of high-strength steel materials, the thickness of the pipe shell (1) is more than 1 mm, the thickness of the non-central output part of the bottom cap (6) is more than 0.5 mm, radial restraint is provided, and the detonation growth period of the insensitive ignition powder and the taian explosive is shortened.
5. The primer-free primer mix detonator of claim 1 wherein the primer mix is a mixture of a non-ignitable propellant and a tai-an explosive, and wherein: the center of the inner wall of the bottom cap (6) is prefabricated with a weak part, which is beneficial to detonation axial output.
6. A non-primer-explosive flame detonator as claimed in any one of claims 1 to 5 wherein: the silk pad (2) is filled from the output end of the tube shell (1) and then pressed with the insensitive ignition powder (3); the second Taian explosive (5) is pressed into the bottom cap (6) firstly, and the first Taian explosive (4) is pressed into the bottom cap (6) after the insensitive ignition powder (3) is pressed.
7. The primer-free primer mix detonator of claim 2 wherein the primer mix is a mixture of a non-ignitable propellant and a tai-an explosive, and wherein: the density of the boron/potassium nitrate ignition powder is 1.35 g/cm3~1.45 g/cm3。
8. The primer-free primer mix detonator of claim 1 wherein the primer mix is a mixture of a non-ignitable propellant and a tai-an explosive, and wherein: the first Taian explosive has a density (4) of 1.45 g/cm3~1.55 g/cm3The second Taian explosive (5) has a density of 1.55 g/cm3~1.65 g/cm3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111465576.1A CN114105720A (en) | 2021-12-01 | 2021-12-01 | Non-priming-agent flame detonator containing insensitive ignition powder and Taian explosive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111465576.1A CN114105720A (en) | 2021-12-01 | 2021-12-01 | Non-priming-agent flame detonator containing insensitive ignition powder and Taian explosive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114105720A true CN114105720A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111465576.1A Pending CN114105720A (en) | 2021-12-01 | 2021-12-01 | Non-priming-agent flame detonator containing insensitive ignition powder and Taian explosive |
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| Country | Link |
|---|---|
| CN (1) | CN114105720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11661824B2 (en) | 2018-05-31 | 2023-05-30 | DynaEnergetics Europe GmbH | Autonomous perforating drone |
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|---|---|---|---|---|
| CN86102717A (en) * | 1986-04-17 | 1987-10-28 | 华东工学院 | Industrial detonator using no priming charge |
| CN1072496A (en) * | 1991-11-21 | 1993-05-26 | 长沙矿山研究院 | Reinforced cap type industrial detonator without initiating explosive |
| CA2252353A1 (en) * | 1998-11-04 | 2000-05-04 | Sek Kwan Chan | Non-primary detonator |
| CN204718509U (en) * | 2015-04-14 | 2015-10-21 | 安徽理工大学 | Constraint steel bushing formula nonpriming material detonator |
| CN108917500A (en) * | 2018-07-23 | 2018-11-30 | 雅化集团绵阳实业有限公司 | A kind of lead for retractable pencil formula fires element and fires the basal detonator that element forms by this |
| CN109029163A (en) * | 2018-08-18 | 2018-12-18 | 南京理工大学 | A kind of miniaturization insensitiveness Nonel detonator |
| CN113091539A (en) * | 2021-03-25 | 2021-07-09 | 南京理工大学 | Engineering blasting foundation detonator with improved safety |
-
2021
- 2021-12-01 CN CN202111465576.1A patent/CN114105720A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102717A (en) * | 1986-04-17 | 1987-10-28 | 华东工学院 | Industrial detonator using no priming charge |
| CN1072496A (en) * | 1991-11-21 | 1993-05-26 | 长沙矿山研究院 | Reinforced cap type industrial detonator without initiating explosive |
| CA2252353A1 (en) * | 1998-11-04 | 2000-05-04 | Sek Kwan Chan | Non-primary detonator |
| CN204718509U (en) * | 2015-04-14 | 2015-10-21 | 安徽理工大学 | Constraint steel bushing formula nonpriming material detonator |
| CN108917500A (en) * | 2018-07-23 | 2018-11-30 | 雅化集团绵阳实业有限公司 | A kind of lead for retractable pencil formula fires element and fires the basal detonator that element forms by this |
| CN109029163A (en) * | 2018-08-18 | 2018-12-18 | 南京理工大学 | A kind of miniaturization insensitiveness Nonel detonator |
| CN113091539A (en) * | 2021-03-25 | 2021-07-09 | 南京理工大学 | Engineering blasting foundation detonator with improved safety |
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| Title |
|---|
| 余明祥等: "硼/硝酸钾点火药燃烧转爆轰的应用", 《火工品》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11661824B2 (en) | 2018-05-31 | 2023-05-30 | DynaEnergetics Europe GmbH | Autonomous perforating drone |
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Application publication date: 20220301 |
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