CN103673795A - Primary explosive-free laser detonator - Google Patents
Primary explosive-free laser detonator Download PDFInfo
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- CN103673795A CN103673795A CN201410003974.5A CN201410003974A CN103673795A CN 103673795 A CN103673795 A CN 103673795A CN 201410003974 A CN201410003974 A CN 201410003974A CN 103673795 A CN103673795 A CN 103673795A
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Abstract
A primary explosive-free laser detonator belongs to the production field of explosive materials for civil use. The primary explosive-free laser detonator is characterized by comprising an elastic bayonet pin (1), an optical fiber head (2), a detonator casing (3) with a bayonet, an inner surface coated glass plug (4), a plastic film (5), a high laser sensitivity explosive (6) containing a light-absorbing substance, a low density explosive (7) and a high intensity explosive (8). The interior of the detonator casing is sequentially filled with the high intensity explosive, the low intensity explosive, the high laser sensitivity mixed explosive, the plastic film, the inner surface coated glass plug and the optical fiber head. The optical fiber head refers to a part of an optical fiber light-emitting end, wrapped by a hard plastic pipe. The inner surface coated glass plug is provided with a small hole so as to facilitate the insertion of the optical fiber head. The optical fiber head is inserted into the bayonet of the primary explosive-free laser detonator, and the elastic bayonet pin is positioned up and down through the bayonet of the detonator casing and the coated glass plug. The optical fiber head punctures the sealed plastic film and is right in contact with the high laser sensitivity explosive inside the detonator casing. The initiation of explosion is achieved through the connection of the optical fiber of the laser detonator and a laser device.
Description
Technical field
The present invention relates to a kind of non-priming laser detonator for engineering explosion, belong to initiating equipment production field.
Background technology
The detonator using now all adopts compound charge technology, and typical structure is to use compared with the high explosive of insensitiveness as secondary explosive, with responsive priming as a main powder charge.But because priming has very high sensitivity, thus exist very large potential safety hazard, and be not suitable for using in the environment such as high temperature, intense radiation, high-intensity magnetic field, thump, high overload.Meanwhile, a large amount of industrial wastewaters of association in priming production process, are difficult to process, and cause serious environmental pollution.
Nonpriming material detonator is development in recent years a kind of detonator type rapidly.In nonpriming material detonator, containing priming, there is the high advantage such as safe, pollution-free.ZL200710019659.1 discloses a kind of nonpriming material detonator technology that adopts excitation apparatus, but its to require four medicines in excitation apparatus be state in bulk.Existing experiment shows: if may cause detonator to miss-fire when four medicine density are greater than 1.0g/cm3.This has limited the range of application of nonpriming material detonator.Another kind method is to impact sheet technology for detonators, and its specific implementation is strong laser irradiation to be produced on metallic film to HTHP plasma, plasma expansion shearing foil, and the film flying of formation high-speed motion, film flying clashes into explosive, and realization is detonated.This technology is invented by American J.R.Strond the earliest, is mainly used in military affairs and aerospace field.Because its required laser energy that detonates is huge, priming device volume is large, is difficult to realize civilian.
The patent No. 201110321587.2, disclosed laser initiation, although improved reliability and the security of initiation system, needs higher laser energy equally.
According to civil explosive industry technological progress guiding theory in 2010, adhere to take that the Scientific Outlook on Development is as commander, the safety in production of take is core, by lift technique standard and entry criteria, restriction falls behind technology, encourage Application and Development safety and environmental protection, low energy, the new product of function admirable, new material, new technology, new equipment, promote civil explosive industry technological progress, and industrial detonator is to safe and reliable, high accuracy, intelligent, environment-friendly type future development.
Summary of the invention
Invent a kind of non-priming laser detonator, there is certain security, economy, the feature of environmental protection, accuracy.
The present invention is a kind of non-priming laser detonator, it is characterized in that: capsule bottom filling high-desity explosive, filling low density explosive on it, then cover the high laser sensitivity explosive that filling contains extinction material, and with plastic membrane sealing, in case explosive is wandering from little tapping when transportation and use.Optical fiber head consists of plastic conduit or glass tube parcel optical fiber bright dipping end.The glass stopper of inner surface plated film has aperture so that optical fiber head inserts, and gives optical fiber head axial location simultaneously, also can effectively play the heat conducting effect that hinders, and film plating layer more can effectively prevent that the radiation of laser energy is lost.
Operation principle: optical fiber head is inserted to non-priming laser detonator opening, and elastic bayonet lock pin is located up and down by the glass stopper of the bayonet socket of capsule and inner surface plated film.Optical fiber head punctures sealing plastic sheeting, arrives at the high laser sensitivity explosive that contains extinction material in shell.The transmission of the laser process optical fiber that laser instrument sends, the high laser sensitivity explosive that detonates and contain extinction material, and then the whole detonation train of ignition laser detonator.
Use this kind of non-priming laser detonator, there is following some significant advantage:
1) dress high-desity explosive of non-priming laser detonator, two times dress low density explosives, the high laser sensitivity explosive that contains extinction material with laser initiation, has replaced the use of priming, and with the glass stopper glass capsulation of inner surface plated film, thereby reduced the threshold values of laser initiation energy.
2) non-priming laser detonator, owing to using cheap optical fiber as initiation energy transmitting medium, has been avoided expending in a large number of detonator and electric lead, with low cost.
3) non-priming laser detonator is made simply, has reduced manufacturing procedure, has reduced cost of labor.
4) non-priming laser detonator is all eliminated the igniting position of traditional detonator inside and two, priming powder charge position dangerous spot, simplified production link, improve the shock resistance of detonator etc., simultaneously be also conducive to improve production, storage, the transportation of non-priming laser detonator, the security of use.
5) non-priming laser detonator, not containing priming, needs to use together with laser instrument, just can detonate.In therefore production of institute, storage, transportation, use procedure, safety and security protection performance promote greatly.
6) owing to avoiding using heavy metal, be the priming of delay powder and contaminated environment, and reached the object of environmental protection.
7) using optical fiber as energy conduction mode, because optical fiber has fabulous insulating properties, therefore guaranteed that Laser initiation system has the ability that good anti-electromagnetism, static, thunder and lightning, radio frequency and stray electrical current disturb, there is very high security; Simultaneously because Transmission Fibers has high temperature high voltage resistant characteristic, so the present invention is applicable to adverse circumstances, as deep water, hyperbaric environment.
8) use the laser do not reach transition energy to carry out conduction check, can Laser initiation system safer, reliable.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and implementation method, the present invention is described in further detail:
Fig. 1 is a kind of non-priming laser detonator;
Wherein, 1, elastic bayonet lock pin 2, optical fiber head 3, capsule with bayonet 4, inner surface coated glass plug 5, sealing plastic sheeting 6, the high laser sensitivity explosive 7, low density explosive 8, high-desity explosive 9, the optical fiber that contain extinction material
Fig. 2 is for connecting the Laser initiation system of non-priming laser detonator
The specific embodiment
Embodiment, referring to Fig. 1.In figure, capsule bottom filling high-desity explosive (8), filling low density explosive (7) it on, then covers and loads the high laser sensitivity explosive (6) that contains extinction material, and with plastic membrane sealing (5).Optical fiber head (2) is by the part that refers to plastic conduit or glass tube parcel optical fiber bright dipping end.The glass stopper of inner surface plated film (4) has aperture so that optical fiber head (2) inserts.During work, optical fiber head (2) is inserted to non-priming laser detonator bayonet socket, elastic bayonet lock pin (1) is located up and down by the glass stopper (4) of the bayonet socket of capsule and inner surface plated film.In production, determine bayonet pin (1) bottom to the distance of optical fiber head (2), optical fiber head (2) punctures sealing plastic sheeting (5), just contacts the high laser sensitivity explosive (6) that contains extinction material in shell.
Referring to Fig. 2.Closed power supply, the laser that laser instrument sends, by optical splitter light splitting, connects without detonating laser detonator by optical fiber.
With the high laser sensitivity explosive that contains extinction material, replace priming, reduced in production, storage, transportation, use procedure potential safety hazard.The popularization of non-priming laser detonator, has great meaning.Can believe, by continuous design and the change of research and production, this kind of nonpriming material detonator, owing to having certain security, the feature of environmental protection, economy, will rapidly be developed at civil explosive industry.
Claims (10)
1. a non-priming laser detonator, is characterized in that: the glass stopper (4) of elastic bayonet lock pin (1), optical fiber head (2), capsule with bayonet (3), inner surface plated film, sealing plastic sheeting (5), the high laser sensitivity explosive (6) that contains extinction material, low density explosive (7), high-desity explosive (8).
2. non-priming laser detonator according to claim 1, is characterized in that: elastic bayonet lock pin (1) is located up and down by the glass stopper (4) of the bayonet socket of capsule and inner surface plated film.
3. non-priming laser detonator according to claim 1, is characterized in that: optical fiber head (2) consists of plastic conduit or glass tube parcel optical fiber bright dipping end.
4. non-priming laser detonator according to claim 1, is characterized in that: bayonet pin bottom is certain to the distance of optical fiber head, and optical fiber head punctures sealing plastic sheeting, just contacts the high laser sensitivity explosive that contains extinction material in shell.
5. non-priming laser detonator according to claim 1, is characterized in that: capsule with bayonet (3), shell mouth has a circle bayonet socket, and elastic bayonet lock pin is firmly blocked.
6. non-priming laser detonator according to claim 1, is characterized in that: the glass of inner surface plated film (4) plug has aperture so that optical fiber head inserts.
7. non-priming laser detonator according to claim 1, is characterized in that: with plastic sheeting (5) sealing, in case explosive is wandering from little tapping when transportation and use.
8. non-priming laser detonator according to claim 1, is characterized in that: coated glass plug (4) inner surface has plated a skim, can effectively reflect laser, prevents that laser energy radiation is lost, and has the heat conducting effect of obstruction.
9. non-priming laser detonator according to claim 1, is characterized in that: the high laser sensitivity explosive (6) that contains extinction material, lower laser energy just can be realized detonation.
10. non-priming laser detonator according to claim 1, is characterized in that: low density explosive (7), high-desity explosive (8), the laser initiation energy threshold of reduction, prevents from miss-firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003974.5A CN103673795A (en) | 2014-01-03 | 2014-01-03 | Primary explosive-free laser detonator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410003974.5A CN103673795A (en) | 2014-01-03 | 2014-01-03 | Primary explosive-free laser detonator |
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| CN103673795A true CN103673795A (en) | 2014-03-26 |
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| CN201410003974.5A Pending CN103673795A (en) | 2014-01-03 | 2014-01-03 | Primary explosive-free laser detonator |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843145A (en) * | 2017-10-20 | 2018-03-27 | 安徽理工大学 | A kind of laser ignition formula gas blast device and its application method |
| CN108218643A (en) * | 2018-01-25 | 2018-06-29 | 中国工程物理研究院化工材料研究所 | The porous surface of the mixed with nano metal of near-infrared laser direct initiation pacifies very much explosive and preparation method thereof |
| CN108467329A (en) * | 2018-05-14 | 2018-08-31 | 中国工程物理研究院化工材料研究所 | A kind of CL-20 explosives of high laser sensitivity and preparation method thereof |
| CN109631678A (en) * | 2018-12-26 | 2019-04-16 | 中国工程物理研究院化工材料研究所 | A method of reducing laser initiation energy |
| CN110887743A (en) * | 2019-11-14 | 2020-03-17 | 宁波大学 | Method for applying blasting dynamic load in shear test of large-size rock mass anchoring structural plane |
| CN112880493A (en) * | 2021-03-05 | 2021-06-01 | 西京学院 | Detonator excited by conducting laser through optical fiber |
| CN115583862A (en) * | 2022-11-02 | 2023-01-10 | 中国科学技术大学 | Polyacid-based low-power laser ignition method |
| US11761743B2 (en) | 2020-05-20 | 2023-09-19 | DynaEnergetics Europe GmbH | Low voltage primary free detonator |
Citations (4)
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| JPS63273800A (en) * | 1987-04-30 | 1988-11-10 | 日本油脂株式会社 | Laser initiating detonator |
| EP1443297A1 (en) * | 2003-01-31 | 2004-08-04 | Puolustusvoimien Teknillinen Tutkimuslaitos | Laser detonator |
| CN102435109A (en) * | 2011-10-21 | 2012-05-02 | 中国科学技术大学 | Laser initiation flyer type initiating explosive-free detonator |
| CN103449943A (en) * | 2013-06-13 | 2013-12-18 | 中国科学技术大学 | Device for stimulating micro-jet by laser and detonator using same |
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2014
- 2014-01-03 CN CN201410003974.5A patent/CN103673795A/en active Pending
Patent Citations (4)
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| JPS63273800A (en) * | 1987-04-30 | 1988-11-10 | 日本油脂株式会社 | Laser initiating detonator |
| EP1443297A1 (en) * | 2003-01-31 | 2004-08-04 | Puolustusvoimien Teknillinen Tutkimuslaitos | Laser detonator |
| CN102435109A (en) * | 2011-10-21 | 2012-05-02 | 中国科学技术大学 | Laser initiation flyer type initiating explosive-free detonator |
| CN103449943A (en) * | 2013-06-13 | 2013-12-18 | 中国科学技术大学 | Device for stimulating micro-jet by laser and detonator using same |
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| 赵兴海等: "激光点火技术综述", 《激光技术》, vol. 31, no. 3, 25 June 2007 (2007-06-25), pages 306 - 310 * |
| 陈利魁等: "掺杂对BNCP半导体激光起爆感度的影响", 《含能材料》, vol. 17, no. 2, 15 April 2009 (2009-04-15), pages 229 - 231 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843145A (en) * | 2017-10-20 | 2018-03-27 | 安徽理工大学 | A kind of laser ignition formula gas blast device and its application method |
| CN107843145B (en) * | 2017-10-20 | 2023-09-26 | 安徽理工大学 | Laser ignition type gas blasting device and application method thereof |
| CN108218643A (en) * | 2018-01-25 | 2018-06-29 | 中国工程物理研究院化工材料研究所 | The porous surface of the mixed with nano metal of near-infrared laser direct initiation pacifies very much explosive and preparation method thereof |
| CN108467329A (en) * | 2018-05-14 | 2018-08-31 | 中国工程物理研究院化工材料研究所 | A kind of CL-20 explosives of high laser sensitivity and preparation method thereof |
| CN109631678A (en) * | 2018-12-26 | 2019-04-16 | 中国工程物理研究院化工材料研究所 | A method of reducing laser initiation energy |
| CN109631678B (en) * | 2018-12-26 | 2021-06-29 | 中国工程物理研究院化工材料研究所 | Method for reducing laser initiation energy |
| CN110887743A (en) * | 2019-11-14 | 2020-03-17 | 宁波大学 | Method for applying blasting dynamic load in shear test of large-size rock mass anchoring structural plane |
| US11761743B2 (en) | 2020-05-20 | 2023-09-19 | DynaEnergetics Europe GmbH | Low voltage primary free detonator |
| CN112880493A (en) * | 2021-03-05 | 2021-06-01 | 西京学院 | Detonator excited by conducting laser through optical fiber |
| CN115583862A (en) * | 2022-11-02 | 2023-01-10 | 中国科学技术大学 | Polyacid-based low-power laser ignition method |
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Application publication date: 20140326 |