CN102435109A - Laser initiation flyer type initiating explosive-free detonator - Google Patents
Laser initiation flyer type initiating explosive-free detonator Download PDFInfo
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- CN102435109A CN102435109A CN2011103215872A CN201110321587A CN102435109A CN 102435109 A CN102435109 A CN 102435109A CN 2011103215872 A CN2011103215872 A CN 2011103215872A CN 201110321587 A CN201110321587 A CN 201110321587A CN 102435109 A CN102435109 A CN 102435109A
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Abstract
The invention belongs to the field of initiation apparatuses, and discloses a laser initiation flyer type initiating explosive-free detonator. The detonator comprises a detonator matrix filled with three-times high explosive, a detonator exciting device consisting of an inner cap and four-times explosive, and a laser initiation system, wherein the laser initiation system consists of a rubber plug, an optical fiber and a laser generating device connected with the optical fiber; the rubber plug is plugged into the inner cap in a detonator shell, the outer surface of the rubber plug is in tight fit with the inner walls of the detonator shell and the inner cap, the middle of the rubber plug is provided with a through hole, the optical fiber connected with the laser generating device passes through the hole, the end of the optical fiber is flush with the lower port of the rubber plug, and the distance between the lower port and the surface of the four-times explosive in the inner cap is less than 15 millimeters; and the laser wavelength of the laser generating device is in a range of 500 to 1,500 nanometers, the optical fiber is a single mode fiber or a multi-mode fiber, and the energy of the laser output by the optical fiber is more than 0.4W. Through the detonator, initiation of the non-dispersed four-times explosive is realized, and the reliability and the safety of the initiation system are improved; and because the transmission optical fiber has high-temperature and high-pressure resistance, the detonator is suitable for severe environments of deep water, high pressure and the like.
Description
Technical field:
The invention belongs to the initiating equipment field.
Background technology:
Detonator is widely used in military affairs, high-tech sector and civil engineering as the detonating material of desensitized explosive.The detonator that uses now all adopts the compound charge technology, and typical structure is to use high explosive than insensitiveness as secondary explosive, sends out powder charge with responsive priming as main.The main powder charge of sending out of at first detonating utilizes the priming quick-fried high explosive that recurs.But all primings are all very sensitive to the various first igniting energy; For example heat energy, electric energy, luminous energy, radiant energy, mechanical energy etc.; Exist very big potential safety hazard, be not suitable in environment such as high temperature, intense radiation, high-intensity magnetic field, thump, high overload, using.Simultaneously, a large amount of industrial wastewaters of association in the priming production process are difficult to handle, and cause serious environmental pollution.
Nonpriming material detonator is a kind of rapidly detonator type of development in recent years.Do not contain priming in the nonpriming material detonator, have high advantage such as safe, pollution-free.ZL200710019659.1 discloses a kind of nonpriming material detonator technology that adopts excitation apparatus, and this detonator basic structure is: the detonator intracavity bottom is respectively once to adorn high explosive, secondary dress high explosive, three dress high explosives, and three powder charges top is an excitation apparatus.Excitation apparatus is in uncovered tubular, to load four times special medicines in the cap.The principle of detonating: utilize cap bottom in the press-cutting that four medicines burnings produce, form the film flying of high-speed motion, film flying impacts three powder charges in below, makes blasting cap initiation.Though existing nonpriming material detonator technology can satisfy general civilian requirement, it requires, and four medicines are state in bulk in the excitation apparatus.Existing experiment shows: if four medicine density are greater than 1.0g/cm
3The time may cause detonator to miss-fire.This has limited the range of application of nonpriming material detonator.As under some particular surroundings, like profound underwater demolition, forceful electric power magnetic, high temperature, high overload etc., existing nonpriming material detonator technology can not be used in these environment.
In the prior art, the main implementation method of laser initiation technology for detonators is with on the main charge/high explosive of laser direct irradiation in detonator, relies on the high explosive in the laser energy direct initiation detonator, does not relate to the film flying principle of detonating.As having discussed a kind of detonator design of using laser direct initiation explosive in the document " research of laser detonator " (tall and big unit, Deng Zhiguo, explosive, 1992).The simplicity of design of this laser detonator, direct does not relate to the film flying structure, needs the light laser light source, and the energy source volume is bigger.Another kind method is to impact the sheet technology for detonators, and its concrete realization is light laser to be radiated at produce the HTHP plasma on the metallic film, plasma expansion shearing foil, and the film flying of formation high-speed motion, film flying bump explosive is realized detonating.This technology by American J.R.Strond invention, is mainly used in military affairs and aerospace field the earliest.Because its required laser energy that detonates is huge, the priming device volume is big, is difficult to realize civilian.
So far, do not find laser technology be used to the to detonate report of flying-piece auget without detonating agent.
Summary of the invention:
The objective of the invention is to, on the prior art basis, utilize the laser initiation nonpriming material detonator, improve nonpriming material detonator detonate power, strengthen applicability and the application under the high overload environment.
Technical scheme of the present invention is following:
Laser initiation flying-piece auget without detonating agent of the present invention, the detonator excitation apparatus that it comprises detonator matrix that three high explosives are housed, is made up of interior cap and four medicines; Said high explosive is positioned at the detonator bottom, and cap in above high explosive, settling is equipped with medicine four times in the interior cap, and four medicine density are 0.6-1.9g/cm
3It is characterized in that it also comprises the laser initiation system, this laser initiation system is made up of rubber stopper, optical fiber and the generating device of laser that is attached thereto; Said rubber stopper is filled in the interior cap in the detonator shell; The internal face of its outer surface and detonator shell, interior cap closely cooperates; Through hole is arranged in the middle of rubber stopper; The optical fiber that links to each other with generating device of laser is set in the hole, and optical fiber end is concordant with the rubber stopper lower port, and the distance on four medicine surfaces in this lower port and the interior cap is less than 15mm; The optical maser wavelength that said generating device of laser produces is in 500nm-1500nm scope, and said optical fiber is single-mode fiber or multimode fibre, through the laser energy of optical fiber output greater than 0.4W.
The present invention not only can be used for single-point and detonates; Use fiber optic splitter can also realize laser beam splitter; The laser that is about to the generating device of laser generation is transferred to fiber optic splitter earlier, respectively laser energy is input in the different detonator excitation apparatus through the optical fiber of telling then, and the realization multichannel is detonated simultaneously.
In the laser initiation flying-piece auget without detonating agent of the present invention, said rubber stopper is a universal component, has elasticity, thereby can be encased in (interference fit or interference fits) in detonator shell or the interior cap more conveniently; Interior cap in the said detonator excitation apparatus is uiform section or variable cross-section, and its planform is identical with prior art (for example ZL200710019659.1); The kind of first, second and third time and four powder charges, density are also identical with prior art in the said detonator.Said generating device of laser, it uses power supply to be the adaptive power supply of laser instrument.
When actual fabrication, at first make this detonator matrix and detonator excitation apparatus, promptly accomplish the detonator base charge according to prior art, powder charge in interior cap again, and the interior cap of powder charge has been inserted in the detonator shell of powder charge; Then; Optical fiber one end is inserted in the centre bore of rubber stopper; Make optical fiber end concordant with the rubber stopper open end, the rubber stopper that optical fiber will be housed again is connected with detonator shell, is about to rubber stopper and is tucked in the detonator shell; And its fore-end is tucked in the interior cap, to guarantee that four times interior medicine surface distances of rubber stopper mesopore lower port (being fiber port) and interior cap are less than 15mm.At last, carry out the bayonet socket processing at the rubber stopper and the coincidence position of interior cap, detonator shell and make it cooperate consolidation, obtain finished product.
When using this product to detonate, generating device of laser is communicated with power supply, can realizes detonating.Initiation process is: start generating device of laser, to detonator, export by the fiber port in rubber stopper through fiber optic conduction for the high energy laser beam of generating device of laser output; Be radiated on four medicines of below; The medicine that detonates fast four times produces gases at high pressure, and High Speed Flyer is formed on the cap bottom in shearing; Film flying detonating capsule base charge is realized blasting cap initiation.
Compare prior art, laser initiation flying-piece auget without detonating agent of the present invention has the following advantages:
(1) employed four medicines can be orthodox explosives, and degree of packing is higher, overcome in the prior art because of four medicine density greater than 1.0g/cm
3Cause the situation of miss-firing, realized detonating of four medicines of non-free-running property, be adapted at using in some high overload environment.
(2) improved the capacity usage ratio of four medicines: the stereotype experiment shows that under other structure condition identical with base charge, the fling chip detonator detonator of laser initiation is exported energy and obviously is superior to detonator fling chip detonator.
(3) characteristics of laser have: monochromaticjty is good, and power output is high, and light disperses little; Concentration of energy and adjustable is deposited difficult decay in the transmission course, does not receive the interference of external environment; And whole initiation system adopts optical fiber to connect; There is not the bridge silk, avoided bridge silk corrosion phenomena, improved the reliability of initiation system greatly.
(4) with optical fiber as the energy conduction mode because optical fiber has excellent insulation property, therefore guaranteed that the laser initiation system has good anti-electromagnetism, static, thunder and lightning, radio frequency and stray electrical current interference capability, has very high security; Simultaneously because Transmission Fibers has the high temperature high voltage resistant characteristic, so the present invention is applicable to adverse circumstances, like deep water, hyperbaric environment, expanded the range of application of flying-piece auget without detonating agent.
(5) belong to a certain particular range of wavelengths and have higher energy density owing to used laser; Can light four medicines, so can improve the required energy that detonates of the laser flying-piece auget without detonating agent that detonates through increasing by four medicine compositions of four medicine density and change with certain density.Therefore, principle according to this in actual the use limits the priming device kind of the laser flying-piece auget without detonating agent that detonates according to use occasion.
Below in conjunction with accompanying drawing the present invention is described in detail
Description of drawings:
Fig. 1 is a kind of example structure sketch map of laser initiation variable cross-section flying-piece auget without detonating agent.
Fig. 2 is linked into the sketch map in the detonator shown in Figure 1 with the laser initiation system.
Shown in Fig. 3 is to use the detonator photo that places the enterprising capable lead plate perforating experiment of stereotype to obtain.
Fig. 4 is a kind of example structure sketch map of laser initiation uiform section flying-piece auget without detonating agent.
Fig. 5 is that laser beam splitter is realized the sketch map that multichannel is detonated simultaneously.
The specific embodiment
Referring to Fig. 1.Among the figure, the core diameter of optical fiber 1 is 400um, fibre cladding 430um, and cover is moulded layer thickness 730um, and numerical aperture (NA) 0.37, one end has the SMA905 optical fiber interface, to be used for being connected of optical fiber and laser instrument.The internal face of rubber stopper 2 outer surfaces and detonator shell 3 closely cooperates, and the rubber stopper external diameter is 5.8mm, and median pore radius is 3.0mm, detonator shell external diameter 7.0mm, internal diameter 6.2mm.The internal face interference fit on cap 4 tops in the lower external face of rubber stopper 2 and the variable cross-section, interior cap total height 12mm, the first half external diameter 6.2mm, internal diameter 5.4mm, height 7mm, the latter half external diameter 5.8mm, internal diameter 5.0mm, height 5mm.The 4th powder charge 5 in variable cross-section in cap 4 inner chambers is the PETN/Al powder, and wherein Al powder and PETN mass ratio are 0.25, loading density 0.8g/cm
3, dose is 0.08g.First, second and third time powder charge 6 is arranged in detonator shell, its boundary position of dotted line signal among the figure, nethermost is the layer of powder charge for the first time, explosive is RDX (RDX), explosive payload 0.3g, pressing density 1.6g/cm
3The explosive of powder charge for the second time is for pacifying very much (PETN), and explosive payload is 0.3g, and pressing density is 1.0g/cm
3Powder charge for the third time is a medicine layer in bulk, and explosive is for pacifying very much (PETN), and explosive payload is 0.3g, and degree of packing is 0.7g/cm
3Top and middle part at detonator shell are respectively equipped with bayonet socket, and its top is 3 road bayonet sockets, and the bayonet socket diameter is 4.8mm, make detonator shell 3 cooperate consolidation with rubber stopper 2; The center bayonet socket is 2 roads, and bayonet socket diameter 5.0mm makes the consolidation that cooperates of cap 4, rubber stopper 2 in detonator shell 3 and the variable cross-section.
Fig. 2 is linked into the sketch map in the above ready-made variable cross-section flying-piece auget without detonating agent with the laser initiation system: power supply 9 is connected with laser instrument 10 through connecting line 11, and optical fiber 1 is communicated with laser instrument 10.Start power supply, output laser, detonator can detonate at once.
Detonator shown in Figure 2 is placed the enterprising capable lead plate perforating experiment of stereotype, and the result who obtains sees Fig. 3.Employed laser power 10W, the optical maser wavelength of generation is 1064nm.Experiment shows: laser flying-piece auget without detonating agent penetration hole diameter is 12.0mm, greater than detonator shell external diameter (external diameter is 7.0mm), meets the blasting cap detonation power and detects index.The lead plate perforation diameter of the common fling chip detonator under the equal conditions is 9.0mm-10.5mm.It is thus clear that the power of detonating of laser flying-piece auget without detonating agent is higher than common flying-piece auget without detonating agent.
In the present embodiment, used power 10W laser instrument and power supply, optical fiber and rubber stopper are buied by market.It is the adjustable power laser power supply of the Maximum Power Output of Shanghai diffraction photoelectricity technology corporation, Ltd. production as 5-10W that said laser instrument uses power supply.
Fig. 4 is the structural representation of laser initiation uiform section flying-piece auget without detonating agent.Among the figure, the total height 15mm of cap 7 in the uiform section, external diameter 6.2mm, internal diameter 5.4mm.The 4th medicine 8 that in uiform section, loads in cap 7 inner chambers is RDX/KClO
3, KClO wherein
3With the RDX mass ratio be 1, loading density 1.6g/cm
3, explosive payload 0.4g, loading height 8mm.Intersection is provided with 3 road bayonet sockets on detonator top, bayonet socket diameter 4.8mm.
By the laser uiform section flying plate detonator in the connected mode connection layout 4 shown in Figure 2, energized, output laser, detonator is detonated at once.
Fig. 5 utilizes laser beam splitter to realize detonate the simultaneously initiation system sketch map of flying plate detonator of multichannel.Among the figure; Power supply 9 is connected with laser instrument 10 through connecting line 11; The laser of laser instrument 10 output is through optical fiber 1 to fiber optic splitter 12, through fiber optic splitter 12 minutes a branch of optical fiber is divided into 4 the tunnel again, and 4 road optical fiber of telling are connected with the flying plate detonator of a laser initiation respectively.Power supply 9 is connected, by detonate the respectively flying plate detonator 13,14,15,16 of laser initiation of four optical fiber of optical fiber.
Claims (2)
1. laser initiation flying-piece auget without detonating agent, the detonator excitation apparatus that it comprises detonator matrix that three high explosives are housed, is made up of interior cap and four medicines; Said high explosive is positioned at the detonator bottom, and cap in above high explosive, settling is equipped with medicine four times in the interior cap, and four medicine density are 0.6-1.9g/cm
3It is characterized in that it also comprises the laser initiation system, this laser initiation system is made up of rubber stopper, optical fiber and the generating device of laser that is attached thereto; Said rubber stopper is filled in the interior cap in the detonator shell; The internal face of its outer surface and detonator shell, interior cap closely cooperates; Through hole is arranged in the middle of rubber stopper; The optical fiber that links to each other with generating device of laser is set in the hole, and optical fiber end is concordant with the rubber stopper lower port, and the distance on four medicine surfaces in this lower port and the interior cap is less than 15mm; The optical maser wavelength that said generating device of laser produces is in the 500-1500nm scope, and said optical fiber is single-mode fiber or multimode fibre, through the laser energy of optical fiber output greater than 0.4W.
2. laser initiation flying-piece auget without detonating agent as claimed in claim 1; It is characterized in that; The laser that said generating device of laser produces is transferred to fiber optic splitter earlier, respectively laser energy is input in the different detonator excitation apparatus through the optical fiber of telling then, and the realization multichannel is detonated simultaneously.
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| CN2011103215872A CN102435109A (en) | 2011-10-21 | 2011-10-21 | Laser initiation flyer type initiating explosive-free detonator |
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| CN2011103215872A CN102435109A (en) | 2011-10-21 | 2011-10-21 | Laser initiation flyer type initiating explosive-free detonator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581479A (en) * | 2012-03-01 | 2012-07-18 | 天津大学 | Method for driving a plurality of flyers by using laser and implementation device |
| CN103090751A (en) * | 2013-02-27 | 2013-05-08 | 中国科学技术大学 | Concave-type variable cross-section detonator excitation device and detonator using same |
| 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 |
| CN103673795A (en) * | 2014-01-03 | 2014-03-26 | 安徽理工大学 | Primary explosive-free laser detonator |
| CN105066800A (en) * | 2015-08-05 | 2015-11-18 | 宏大矿业有限公司 | Split assembled type primary explosive-free electric detonator |
| CN105066799A (en) * | 2015-08-05 | 2015-11-18 | 宏大矿业有限公司 | Split assembled non-priming explosive non-electric detonating tube detonator |
| 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 |
| CN112880493A (en) * | 2021-03-05 | 2021-06-01 | 西京学院 | Detonator excited by conducting laser through optical fiber |
| CN113028905A (en) * | 2019-12-25 | 2021-06-25 | 南京理工大学 | Laser flying piece initiation device of miniaturized pulse laser and in-situ integrated micro initiation unit |
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| FR2914056A1 (en) * | 2007-03-21 | 2008-09-26 | Nexter Munitions Sa | Pyrotechnic initiator e.g. igniter type initiator, has optical fiber with front part that is sealed in intermediate ring fixed to connector, where end of part of fiber is found directly in contact with pyrotechnic composition or explosive |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581479A (en) * | 2012-03-01 | 2012-07-18 | 天津大学 | Method for driving a plurality of flyers by using laser and implementation device |
| CN102581479B (en) * | 2012-03-01 | 2014-09-17 | 天津大学 | Method for driving a plurality of flyers by using laser and implementation device |
| CN103090751A (en) * | 2013-02-27 | 2013-05-08 | 中国科学技术大学 | Concave-type variable cross-section detonator excitation device and detonator using same |
| 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 |
| CN103449943B (en) * | 2013-06-13 | 2016-03-09 | 中国科学技术大学 | A kind of device of laser excitation microjet and use the detonator of this device |
| CN103673795A (en) * | 2014-01-03 | 2014-03-26 | 安徽理工大学 | Primary explosive-free laser detonator |
| CN105066800A (en) * | 2015-08-05 | 2015-11-18 | 宏大矿业有限公司 | Split assembled type primary explosive-free electric detonator |
| CN105066799A (en) * | 2015-08-05 | 2015-11-18 | 宏大矿业有限公司 | Split assembled non-priming explosive non-electric detonating tube detonator |
| 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 |
| CN113028905A (en) * | 2019-12-25 | 2021-06-25 | 南京理工大学 | Laser flying piece initiation device of miniaturized pulse laser and in-situ integrated micro initiation unit |
| CN112880493A (en) * | 2021-03-05 | 2021-06-01 | 西京学院 | Detonator excited by conducting laser through optical fiber |
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Application publication date: 20120502 |