CN102313496B - Single-bridge dual-drive spherical exploding foil initiator - Google Patents
Single-bridge dual-drive spherical exploding foil initiator Download PDFInfo
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- CN102313496B CN102313496B CN201010224402.1A CN201010224402A CN102313496B CN 102313496 B CN102313496 B CN 102313496B CN 201010224402 A CN201010224402 A CN 201010224402A CN 102313496 B CN102313496 B CN 102313496B
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Abstract
The invention discloses a single-bridge dual-drive spherical exploding foil initiator, belonging to the technical field of application of initiators and pyrotechnics. The initiator comprises two semispherical units and an electric connecting assembly, wherein each semispherical unit comprises a semispherical shell, an acceleration chamber arranged inside the semispherical shell, an originating explosive column and an output explosive column; the electric connecting assembly comprises an explosive bridge foil and two sections of flat cables, wherein the explosive bridge foil is formed by coating polyimide foils on two sides of a copper foil and is connected between the two sections of flat cables, one end of one section of flat cable is folded, and a release hole for exposing a bridge area is arranged on the folded flat cable; and one end of the electric connecting assembly is arranged between the two semispherical units and the peripheries of the two semispherical shells are welded to form a complete sphere, wherein two sides of the bridge area of the explosive bridge foil are respectively and oppositely adjacent to chamber holes of the two acceleration chamber, and the other end of the electric connecting assembly is exposed outside the sphere. When the single-bridge dual-drive spherical exploding foil initiator is applied, an embedded body-body contact initiating manner can be adopted, so that the initiating capability and the reliability for initiating lower-level insensitive explosives are increased.
Description
Technical field
The invention belongs to fuse and priming system field, relate to the initiator that a kind of insensitiveness ammunition class armament systems are used, relate in particular to a kind of high-energy insensitive initiator that is applicable to insensitiveness in-line arrangement propagation of explosion sequence.
Background technology
The quick variation of modern war and going from bad to worse of development and battlefield surroundings, proposed more and more stricter requirement to weapons and ammunitions.Ammunition not only will meet far firing range, precision is high, power is large requirement, and requires insensitiveness more.The appearance of insensitiveness ammunition concept, to in fuse explosive train especially sequence to reliability and security have the greatest impact, it is the most responsive that part---priming device has proposed new requirement, be priming device when must thering is high security, also must have enough output for reliable initiation Insensitive booster composition.
Exploding Foil initiator with its high security, high reliability, good adaptive capacity to environment and action time short advantage in nuclear weapon, all kinds of tactical missile and space flight, aviation field, approved widely, be considered to the most desirable, the most promising initiator in ordnance initiation system.But because its main charge four type hexanitro Stilbene (HNS-IV) output energy are not high, make it to be restricted in the detonate application of more subordinate's powder charge (booster explosive) of insensitiveness of insensitiveness ammunition sequence.
China's national defence patent application 200710082148.4 discloses a kind of traditional Exploding Foil initiator, the Exploding Foil unidirectional drive film flying of this initiator main charge that detonates, owing to being subject to the restriction of unidirectional export structure form, this initiator also can only adopt the pattern of detonating of the contact of face-face or point-face contact in propagation of explosion sequence, thereby the Exploding Foil initiator of this unidirectional output is the problem that cannot solve its main charge output finite energy.
Summary of the invention
The technical problem to be solved in the present invention is, exports the weakness that energy is not high for traditional Exploding Foil initiator in the application of insensitiveness ammunition sequence, by the version of traditional Exploding Foil initiator is improved, provides a kind of single bridge two spherical initiators of Exploding Foil that drive.Specifically, this initiator has the thin bi-directional drive film flying of the single explosive bridge function of main charge of detonating, and is realized with the body of propagation of explosion sequence and being contacted by embedded mode, thereby realizes more subordinate's powder charge of insensitiveness of reliable initiation.
For solving the problems of the technologies described above, single bridge provided by the invention is two to be driven the spherical initiator of Exploding Foil and comprises that two hemispherical shells, two powder column grip assemblies, two accelerate thorax, two powder columns that start, two output powder columns and electrical connection module, and the inner chamber of described two hemispherical shells is by the spherical crown shape groove being connected and cylindrical hole forms and cylindrical hole is positioned at diameter end face one side of hemisphere, described electrical connection module is made up of explosive bridge paper tinsel and two segment length flat cable not etc., in the middle of being shaped as of explosive bridge paper tinsel with the rectangular sheet in thin neck bridge district, its tow sides that are configured to Copper Foil respectively cover one deck polyimide foil, the diameter that is manufactured with release aperture and release aperture in the plane of long flat cable is greater than the bore diameter that accelerates thorax, one end of long flat cable is folding, the Copper Foil at a width edge place of explosive bridge paper tinsel is connected with the wire of long flat cable folded end, the Copper Foil at another width edge place is connected with the wire of short flat cable one end, and explosive bridge Bo Qiao district is positioned at described release aperture center, described two output powder columns coordinate respectively in the spherical crown shape groove that is placed on described two hemispherical shells, in each powder column grip assembly, all install one and accelerate thorax and the powder column that starts, two powder column grip assemblies one by one corresponding matching are installed in the cylindrical hole of described two hemispherical shells, one end of the described powder column that starts contacts with described output powder column, and the other end contacts with the thorax nose end of described acceleration thorax, one end of described electrical connection module between the diameter end face of described two hemispherical shells and the two sides in described explosive bridge Bo Qiao district respectively with described two to accelerate the thorax holes of thoraxes adjacent and just right, after the end face periphery of two hemispherical shells is connected, form spheroid, the another one end of described electrical connection module is exposed to described spheroid outside.
According to the present invention, the thickness of described Copper Foil is 4～6 μ m, and the thickness of described one deck polyimide foil is 25 μ m.
According to the present invention, described in start powder column be with granularity be the cylinder powder column that 300nm～500nm tetra-type hexanitro Stilbene explosives are pressed into; Described output powder column is the spherical crown shape powder column by common four type hexanitro Stilbene explosive compactings; The powder column that starts is 90%～95% of solid density with the pressing density of output powder column.
According to the present invention, described two powder column grip assemblies all contain Fixing shrink ring, rectangle powder column cover and T shape powder column cover, Fixing shrink ring is U-shaped cylindrical shell, its bottom is threaded with central through hole and inwall, T shape powder column cover is with longitudinal center's through hole, its crossbeam periphery is with the annular table terrace lower than middle end face, the short transverse of rectangle powder column cover is with central stepped, width edge rounding is also provided with external screw thread, described two powder columns that start are placed in respectively in the longitudinal center hole of two T shape powder column covers, described two acceleration thoraxes one by one corresponding macropore and two the rectangle powder column covers that are placed in described two rectangle powder columns cover central stepped are connected by screw, the montant part of two T shape powder column covers one by one correspondence is inserted in the aperture of two rectangle powder columns cover central stepped, each Fixing shrink ring connects with corresponding rectangle powder column external threading, Fixing shrink ring and rectangle powder column cover are all positioned at the cylindrical hole of hemispherical shell, the T shape powder column cover annular table terrace of crossbeam and the interior annular bottom surface of Fixing shrink ring contact, the middle end face of projection is inserted in the central through hole of described Fixing shrink ring bottom.
According to the present invention, on the diameter end face of described hemispherical shell, be also provided with a rectangular recess, sphere and the cylindrical hole of hemispherical shell led to respectively at the two ends of rectangular recess, and described electrical connection module is guided to outside described spheroid by described two rectangular recess.
Overall technology effect of the present invention is embodied in the following aspects.
(1) the present invention is in having inherited the high security speciality of traditional Exploding Foil initiator, by remove ceramic reflecting sheet and adopt double-sided polyimide explosive bridge paper tinsel and two groups by accelerating thorax, the technical measures such as sequence of detonating that form of start powder column and output powder column, achieved Dan Qiaoshuan and driven the function of detonating.In initiation process of the present invention, the restricted area that the reflection function of original ceramic reflecting sheet is made up of jointly two acceleration thoraxes is replaced, and then ensures the two-sided film flying of respectively shearing out detonate two start powder columns of enough energy from explosive bridge paper tinsel; In addition, two sequences of detonating have adopted symmetrical hemispheric version, make the two-way synchronism of detonating of the present invention reach the precision of ns level, and then have ensured that both sides axially export the hemispherical detonation wave high level of synchronization of formation and final spherical wave output characteristics.
(2) in the present invention, the flat cable that does not directly wait with two segment length respectively at the two ends of double-sided polyimide explosive bridge paper tinsel is connected, by taking to arrange on one section of flat cable the measure of release aperture and folding this section of cable, make two accelerate thoraxes can be directly and the Surface Contact of polyimides, thus, provide technical support for realizing symmetrical hemispherical dome structure form of the present invention.
(3) because the present invention has adopted symmetrical hemispherical dome structure form, therefore, can take to imbed in when application the pattern of detonating of medicament or main charge agent of detonating, the contact of organizator-body, compared with face-face contact firing pattern of traditional Exploding Foil initiator, under identical dose, the present invention has improved priming system in propagation of explosion sequence detonate initiating ability and the reliability of subordinate's insensitiveness powder charge.
Brief description of the drawings
Fig. 1 is the exploded perspective view of the spherical initiator of Exploding Foil of the present invention.
Fig. 2 is the schematic diagram that is related to respectively forming in the spherical initiator of Exploding Foil of the present invention.
Fig. 3 is the structure composition schematic diagram of the electrical connection module shown in Fig. 1.
Fig. 4 is two annexation schematic diagrames that accelerate thorax and two rectangle powder column covers.
Fig. 5 is the profile schematic diagram of the spherical initiator of Exploding Foil of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further detail.
From the mechanism of action of traditional Exploding Foil initiator, be can form single bridge pair to drive the two-way detonation mode of structure if cancel ceramic reflecting sheet, just can form in itself a kind of two-way output characteristics of high synchronization accuracy.For this reason, the preferred embodiment of the present invention, according to the own characteristic of traditional Exploding Foil initiator, is that reflector plate, Exploding Foil, acceleration thorax and film flying etc. redesign and improve to its core, provides Dan Qiaoshuan as shown in Figure 1 to drive the spherical initiator of Exploding Foil.This spherical initiator comprises that electrical connection module 1, two accelerate thorax 2, two hemispherical shells 6, two powder column grip assemblies, two start powder column 11 and two output powder columns 12.
Shown in Fig. 2, the inner chamber of two hemispherical shells 6 forms by the spherical crown shape groove being connected and cylindrical hole and cylindrical hole is positioned at diameter end face one side of hemisphere; Hemispherical shell 6 diameter end face be provided with a rectangular recess, sphere and the cylindrical hole of hemispherical shell 6 led to respectively at the two ends of rectangular recess.Two powder column grip assemblies all contain rectangle powder column cover 3, T shape powder column cover 4 and Fixing shrink ring 5.The short transverse of rectangle powder column cover 3 is with central stepped, width edge rounding is also provided with external screw thread, the both sides of central stepped are respectively provided with a connecting hole and two connecting holes are arranged on the length direction of rectangle powder column cover, wherein, connecting hole on a rectangle powder column cover 3 is countersunk head screw, and the connecting hole on another rectangle powder column cover 3 is screw.T shape powder column cover 4 is with longitudinal center's through hole, and its crossbeam periphery is with the annular table terrace lower than middle end face.Fixing shrink ring 5 is U-shaped cylindrical shell, and its bottom is threaded with central through hole and inwall.Accelerating thorax 2 is to adopt fabricated from sapphire.The powder column 11 pressing density that start are solid density 90%～95%.HNS (2,2 ', 4,4 ', 6,6 '-hexanitrobenzene ethene, is commonly called as hexanitro Stilbene) explosive is a kind of desensitized explosive of good heat stability, particularly the ultra-fine HNS of high-specific surface area, high-purity and stable pattern is more responsive to burst pulse shock wave, is in-line arrangement propagation of explosion sequence core ignition element---the medicament allowable of Exploding Foil initiator.Output powder column 12 is the ball-crown body powder columns that are pressed into by common four type hexanitro Stilbene explosives, and pressing density is identical with the powder column that starts.
Shown in Fig. 3, electrical connection module 1 is made up of explosive bridge paper tinsel 7 and two segment length flat cable 8,9 not etc.Explosive bridge paper tinsel 7 is the middle rectangular sheet with thin neck bridge district, and it is configured to two layers of polyimide paper tinsel folder one deck Copper Foil, and wherein, the thickness of two layers of polyimide paper tinsel is respectively 25 μ m, and the thickness of Copper Foil is 4～6 μ m.One end central authorities of two sections of flat cables 8,9 are all manufactured with the projection being connected with explosive bridge paper tinsel 7, and are manufactured with release aperture 10 in the plane of long flat cable 9, and the diameter of release aperture 10 is greater than the bore diameter that accelerates thorax 2.Long flat cable 9 one end with projection is folding, the wire of the Copper Foil at 7 one width edge places of explosive bridge paper tinsel and long flat cable 9 folded ends is by ultrasonic bonding, the wire of the Copper Foil at another width edge place and short flat cable 8 one end is also by ultrasonic bonding, and explosive bridge paper tinsel 7 Qiao districts are positioned at release aperture center.
Shown in Fig. 4, two acceleration thoraxes 2 are placed in respectively the central stepped macropore of two rectangle powder columns covers 3, two rectangle powder column covers 3 are fixed together by two screws 13, wherein, one end of electrical connection module 1 is clipped between two rectangle powder columns cover 3, two accelerate that thorax 2 contacts with electrical connection module 1 and its bore hole just to 7 positions, Qiao district of explosive bridge paper tinsel in electrical connection module 1.Two powder columns 11 that start are placed in respectively in the longitudinal center hole of two T shape powder columns covers 4 (referring to Fig. 2), the montant part of two T shape powder column covers 4 is inserted into respectively in the central stepped aperture of two rectangle powder column covers 3, and two powder columns 11 that start accelerate thorax 2 end contacts with two respectively.Each Fixing shrink ring 5 is threaded with rectangle powder column cover 3, and T shape powder column overlaps the annular table terrace of 4 crossbeams and the interior annular bottom surface of Fixing shrink ring 5 contacts, and the middle end face of projection is inserted in the central through hole of Fixing shrink ring 5 bottoms.Two output powder columns 12 coordinate respectively in the spherical crown shape groove that is placed on two hemispherical shells 6.Fixing shrink ring 5 and rectangle powder column cover 3 are all positioned at the cylindrical hole of hemispherical shell 6, the diameter end face of two hemispherical shells 6 relatively and diameter end face peripheral seam place be connected by Laser Welding, thereby form a complete spheroid (referring to Fig. 5), wherein: output powder column 12 with start powder column 11 end contacts, the other end of the electrical connection module 1 i.e. other end of long flat cable 9 and short flat cable 8 is guided to outside spheroid by the rectangular recess on two hemispherical shells 6 respectively.
When application, two list bridge of the present invention spherical parts that drive the spherical initiator of Exploding Foil can be embedded in the propagation of explosion medicament or main charge in propagation of explosion sequence, the electrical connection module 1 being exposed to outside spheroid is connected with the initiation control circuit in armament systems fuse.When there is heavy current steep-sided pulse (crest voltage 2～5kV at the wiring two ends of electrical connection module 1, peak point current 2～4kA, application time is not more than 1 μ s) while inputting, gasify rapidly in explosive bridge paper tinsel 6 Qiao districts, and produce plasma, Cathode plasma explosion is also sheared the polyimide foil of Qiao Qu both sides and forms film flying, promote two film flyings respectively by the thorax hole of two acceleration thoraxes 2 simultaneously, two of the high-speed impacts powder column 11 that starts, make two powder columns 11 that start produce detonation simultaneously and detonate two and export powder column 12, the detonation that produces of two output powder columns 12 is under the restriction of two hemispherical shells 6, and then form spherical detonation wave and ignite booster explosive or the main charge in warhead.
Claims (5)
1. the two spherical initiators of Exploding Foil that drive of single bridge, comprise powder column grip assembly, acceleration thorax [2], the powder column that starts [11] and output powder column [12], it is characterized in that: described powder column grip assembly, acceleration thorax [2], the powder column that starts [11] and output powder column [12] are two, and comprise two hemispherical shells [6] and electrical connection module [1], the inner chamber of described two hemispherical shells [6] forms by the spherical crown shape groove being connected and cylindrical hole and cylindrical hole is positioned at diameter end face one side of hemisphere, described electrical connection module [1] is by explosive bridge paper tinsel [7] and two segment length flat cable [8 not etc., 9] form, in the middle of being shaped as of explosive bridge paper tinsel [7] with the rectangular sheet in thin neck bridge district, its tow sides that are configured to Copper Foil respectively cover one deck polyimide foil, the diameter that is manufactured with release aperture [10] and release aperture [10] in the plane of long flat cable [9] is greater than the integral diameter that accelerates thorax [2], one end of long flat cable [9] is folding, the Copper Foil at [7] width edge places of explosive bridge paper tinsel is connected with the wire of long flat cable [9] folded end, the Copper Foil at another width edge place is connected with the wire of short flat cable [8] one end, and explosive bridge paper tinsel [7] Qiao district is positioned at described release aperture [10] center, described two output powder columns [12] coordinate respectively in the spherical crown shape groove that is placed on described two hemispherical shells [6], in each powder column grip assembly, all install one and accelerate thorax [2] and the powder column that starts [11], two powder column grip assemblies one by one corresponding matching are installed in the cylindrical hole of described two hemispherical shells [6], one end of the described powder column that starts [11] contacts with described output powder column [12], and the other end contacts with the thorax nose end of described acceleration thorax [2], one end of described electrical connection module [1] be positioned between the diameter end face of described two hemispherical shells [6] and the two sides in described explosive bridge paper tinsel [7] bridge district adjacent and just right with described two thorax holes of accelerating thoraxes [2] respectively, after the end face periphery of two hemispherical shells [6] is connected, form spheroid, the another one end of described electrical connection module [1] is exposed to described spheroid outside.
2. single bridge according to claim 1 is two drives the spherical initiator of Exploding Foil, it is characterized in that: the thickness of described Copper Foil is 4～6 μ m, and the thickness of described one deck polyimide foil is 25 μ m.
3. single bridge according to claim 1 and 2 is two drives the spherical initiator of Exploding Foil, it is characterized in that: described in start powder column [11] be with granularity be the cylinder powder column that 300nm～500nm tetra-type hexanitro Stilbene explosives are pressed into; Described output powder column [12] is the spherical crown shape powder column by common four type hexanitro Stilbene explosive compactings; Start powder column [11] and output powder column [12] pressing density be 90%～95% of solid density.
4. the two spherical initiators of Exploding Foil that drive of single bridge according to claim 3, it is characterized in that: described two powder column grip assemblies all contain Fixing shrink ring [5], rectangle powder column cover [3] and T shape powder column cover [4], Fixing shrink ring is U-shaped cylindrical shell, its bottom is threaded with central through hole and inwall, T shape powder column cover [4] is with longitudinal center's through hole, its crossbeam periphery is with the annular table terrace lower than middle end face, the short transverse of rectangle powder column cover [3] is with central stepped, width edge rounding is also provided with external screw thread, described two powder columns that start [11] are placed in respectively in the longitudinal center hole of two T shape powder column covers [4], described two are accelerated thoraxes [2] correspondence is placed in described two rectangle powder column covers [3] one by one central stepped macropore and two rectangle powder column covers [4] and are connected by screw [13], the montant part of two T shape powder column covers [4] one by one correspondence is inserted in the central stepped aperture of two rectangle powder column covers [3], each Fixing shrink ring [5] connects with corresponding rectangle powder column external threading, Fixing shrink ring [5] and rectangle powder column cover [3] are all positioned at the cylindrical hole of hemispherical shell [6], the annular table terrace of T shape powder column cover [4] crossbeam contacts with the interior annular bottom surface of Fixing shrink ring, at the bottom of the middle end face of projection is inserted into described Fixing shrink ring in the central through hole of [5] portion.
5. drive the spherical initiator of Exploding Foil according to the Dan Qiaoshuan described in claim 1 or 2 or 4, it is characterized in that: on the diameter end face of described hemispherical shell [6], be also provided with a rectangular recess, sphere and the cylindrical hole of hemispherical shell [6] led to respectively at the two ends of rectangular recess, and described electrical connection module is guided to outside described spheroid by described two rectangular recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010224402.1A CN102313496B (en) | 2010-07-09 | 2010-07-09 | Single-bridge dual-drive spherical exploding foil initiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010224402.1A CN102313496B (en) | 2010-07-09 | 2010-07-09 | Single-bridge dual-drive spherical exploding foil initiator |
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| Publication Number | Publication Date |
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| CN102313496A CN102313496A (en) | 2012-01-11 |
| CN102313496B true CN102313496B (en) | 2014-12-10 |
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| CN201010224402.1A Expired - Fee Related CN102313496B (en) | 2010-07-09 | 2010-07-09 | Single-bridge dual-drive spherical exploding foil initiator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456077B (en) * | 2014-11-18 | 2016-05-04 | 中国工程物理研究院化工材料研究所 | Temperature-sensitive booster |
| CN104501670B (en) * | 2014-12-26 | 2016-08-24 | 新乡北方车辆仪表有限公司 | Small-sized high-peak power driving method, drive circuit and driver |
| CN106643352B (en) * | 2017-02-15 | 2018-03-23 | 中国工程物理研究院化工材料研究所 | Low energy initiator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178888B1 (en) * | 1998-01-20 | 2001-01-30 | Eg&G Star City, Inc. | Detonator |
| US6752083B1 (en) * | 1998-09-24 | 2004-06-22 | Schlumberger Technology Corporation | Detonators for use with explosive devices |
| US6851370B2 (en) * | 2002-04-30 | 2005-02-08 | Kdi Precision Products, Inc. | Integrated planar switch for a munition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1662224B1 (en) * | 2004-11-30 | 2010-11-17 | Weatherford/Lamb, Inc. | Non-explosive two component initiator |
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2010
- 2010-07-09 CN CN201010224402.1A patent/CN102313496B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178888B1 (en) * | 1998-01-20 | 2001-01-30 | Eg&G Star City, Inc. | Detonator |
| US6752083B1 (en) * | 1998-09-24 | 2004-06-22 | Schlumberger Technology Corporation | Detonators for use with explosive devices |
| US6851370B2 (en) * | 2002-04-30 | 2005-02-08 | Kdi Precision Products, Inc. | Integrated planar switch for a munition |
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| CN102313496A (en) | 2012-01-11 |
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