CN108225133B - flyer type thermosensitive detonator - Google Patents
flyer type thermosensitive detonator Download PDFInfo
- Publication number
- CN108225133B CN108225133B CN201810028947.1A CN201810028947A CN108225133B CN 108225133 B CN108225133 B CN 108225133B CN 201810028947 A CN201810028947 A CN 201810028947A CN 108225133 B CN108225133 B CN 108225133B
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- Prior art keywords
- base
- explosive
- containing cavity
- packaging
- flying
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0803—Primers; Detonators characterised by the combination of per se known chemical composition in the priming substance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0807—Primers; Detonators characterised by the particular configuration of the transmission channels from the priming energy source to the charge to be ignited, e.g. multiple channels, nozzles, diaphragms or filters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention discloses an flyer type thermal sensitive detonator which comprises a base, a packaging seat and a detonation transfer sequence, wherein the detonation transfer sequence is installed on the base and packaged by the packaging seat, the base is provided with a cylindrical containing cavity and a second cylindrical containing cavity which are connected, a base square groove and a base square boss are arranged on the side of the second cylindrical containing cavity on the base, the square groove is positioned on the inner side of the square boss, the detonation transfer sequence comprises -level explosive and second-level explosive, a flyer is arranged beside the -level explosive, a gun barrel is arranged on the outer side of the flyer, an explosive ring is arranged on the outer side of the gun barrel, the packaging seat comprises a packaging square boss and a packaging square groove, a third cylindrical containing cavity is arranged on the packaging seat in the direction of an opening of the second cylindrical containing cavity, and a thin sheet is arranged on the inner side of the third cylindrical containing cavity.
Description
Technical Field
The invention relates to detonators, in particular to flying-piece type thermosensitive detonators acting by environmental heat, and belongs to the technical field of explosives.
Background
The cutting cord forms metal jet flow under the action of input detonation wave, can cut various materials, and has been widely used in military and civil fields application, as a result, the cutting cord is detonated by the detonator at the front end, however, the explosive used in the conventional detonator is sensitive and cannot be adapted to the impact of higher and longer environmental temperature, and the use range of the blasting sheet detonator is limited due to the harsh initiation conditions.
Such as: when the missile is hung and launched, heat accumulation is generated due to high-speed friction between the shell and air, the temperature is high (more than 150 ℃ when the missile is hung and the temperature is above 300 ℃ when the missile is launched, even higher), and the duration is long (the hanging time is dozens of hours, and the launching time lasts for a few minutes); when fire disasters occur under the conditions of service, war preparation and the like, the missile propellant burns due to the rapid rise of the environmental temperature, the generated pressure suddenly rises in a closed space to explode, and the heavy loss or casualty is caused to a carrying platform and personnel.
Disclosure of Invention
The invention discloses non-electric detonating detonators with high temperature resistance and high safety, aiming at solving safety accidents caused by the conditions that the environmental temperature rises rapidly, the pressure in a closed cabin rises suddenly until explosion, safety cannot be opened normally and the like.
The detonation transfer sequence disclosed by the invention pushes the flyer to detonate the explosive through explosive combustion so as to solve the problems of difficult detonation and low reliability caused by temperature-resistant explosive combustion.
The invention is realized by the following steps:
flying piece type thermal sensitive detonator comprises a base, a packaging seat and a booster sequence, wherein the booster sequence is installed on the base and packaged through the packaging seat, a cylindrical containing cavity and a second cylindrical containing cavity which are connected are arranged on the base, the inner diameter of the second cylindrical containing cavity is larger than that of a cylindrical containing cavity, a base square groove and a base square boss are arranged on the side of the second cylindrical containing cavity on the base, the square groove is located on the inner side of the square boss, the booster sequence comprises -grade explosive and two-grade explosive, -grade explosive is matched with the cylindrical containing cavity, a flying piece is arranged beside -grade explosive, a gun barrel is arranged on the outer side of the flying piece, an explosive ring is arranged on the outer side of the gun barrel, two-grade explosive is arranged on the inner side of the explosive ring, the packaging seat comprises a packaging square boss and a packaging square groove which are matched with the base square groove and the base square boss, a third cylindrical containing cavity is arranged on the packaging seat in the opening direction of the.
The scheme of step is that:
the base is connected with the packaging seat through a wedge-shaped structure, and the restriction force of detonation growth is guaranteed.
The scheme of step is that:
the base and the packaging seat are sealed in a laser welding mode.
The scheme of step is that:
the lower part of the base is provided with a threaded hole.
The scheme of step is that:
the grade explosive and the secondary explosive are temperature-resistant explosives, and comprise or more of HMX, CL-20, PYX, HNS or LLM-105.
The scheme of step is that:
the flying piece is made of metal material.
The scheme of step is that:
the metal material is kinds of aluminum, copper, titanium and stainless steel.
The scheme of step is that:
the medicine-loading ring is made of temperature-resistant materials with proper heat conductivity coefficient, and comprises or more of alloy steel, porous ceramic and phenolic resin.
The scheme of step is that:
the third cylindrical cavity is a cutting cable installation cavity reserved on the packaging seat, and alignment of the cutting cable and the booster sequence is guaranteed.
According to the invention, -grade explosive charges of the booster sequence sense the ambient temperature to act, shear and push the flyer to impact and detonate the secondary explosive charges after being accelerated by the barrel acceleration chamber, and the safety of the booster sequence at higher temperature and the detonation reliability at higher temperature are solved by means of material selection, parameter adaptation, thermal insulation protection and the like.
The plugging sheet is positioned between the base and the cutting cord installation cavity, and the detonation wave of an explosion transfer sequence firstly destroys the plugging sheet and then detonates the cutting cord charge.
Compared with the prior art, the invention has the beneficial effects that: the front end input of the explosion propagation sequence is non-electric input, namely environment heat, so that the spontaneity of the explosion propagation sequence under special conditions such as fire and the like is guaranteed; the detonation transfer sequence adopts a flying disc detonation mode, so that the problem that the combustion of the insensitive explosive is difficult to change into detonation is solved; a wedge-shaped structure is adopted between the base and the packaging seat, so that the detonation growth constraint is enhanced; and the base and the packaging seat are welded by laser to ensure the sealing performance.
Drawings
FIG. 1 is a schematic structural diagram of a flying disc type thermal detonator of the present invention;
FIG. 2 is a schematic view of a base of the present invention;
FIG. 3 is a schematic view of a package base according to the present invention;
fig. 4 is a schematic diagram of a booster sequence of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further with reference to the accompanying drawings and examples.
As shown in fig. 1 to 4, the flyer thermal detonator in the embodiment comprises a base 1, a packaging seat 2 and a booster sequence 3, wherein the base 1 in the embodiment is formed by machining a whole stainless steel base material and comprises a threaded hole 101, an th cylindrical cavity 102, a second cylindrical cavity 103, a base square groove 104 and a base square boss 105, the packaging seat 2 in the embodiment is formed by machining a whole stainless steel base material and comprises a packaging square boss 201, a packaging square groove 202, a blocking sheet 203 and a third cylindrical cavity 204, and the booster sequence 3 in the embodiment comprises -level explosive 301, a flyer 302, a gun barrel 303, a secondary explosive 304 and an explosive ring 305.
In this embodiment, when assembling, grade charge 301 is first loaded into cylindrical cavity 102, the charge mode can be that bulk explosive is loaded manually or is loaded after being pressed and formed by a mould, the explosive used for grade charge 301 can be or more of HMX, CL-20, PYX, HNS, LLM-105 or other suitable materials, grade charge 301 is the function initiating element of the flying-chip type thermal detonator, and also determines the safety performance of the flying-chip type thermal detonator.
The flying plate 302 is placed in the second cylindrical cavity 103, the material of the flying plate 302 can be or more of aluminum, copper, titanium, stainless steel or other suitable materials, specifically, the material of the flying plate 302 in this embodiment is titanium, and the flying plate 302 can be prepared by stamping.
The barrel 303 is placed into the second cylindrical cavity 103 and against the flyer 302. The barrel 303 is machined from a suitable metallic or non-metallic material and has a cylindrical cavity in the center. Specifically, the barrel in this embodiment is made of stainless steel.
The charge ring 305 is placed in the second cylindrical cavity 103 and is tightly attached to the barrel 303, the material of the charge ring is determined according to the temperature level of the actual using environment and the highest temperature which the secondary charge 304 can bear within a specified time, the selection is based on the physical properties such as heat conductivity coefficient, specific heat capacity, strength, toughness and the like, the material can be or more of alloy steel, porous ceramic, phenolic resin or other suitable materials, the charge ring 305 provides a cavity for the secondary charge 304, an insulating layer is formed between the base 1 and the secondary charge 304, the temperature rise of the secondary charge 304 is reduced, and therefore the secondary charge 304 can still keep stable after the -level charge 301 is acted due to the temperature rise.
The pressed secondary charge 304 is placed in the charge ring 305. the explosive used for the secondary charge 304 may be or more of HMX, CL-20, PYX, HNS, LLM-105 or other suitable materials, depending on whether detonation will initiate the charge of the cord.
Finally, the base 1 is wedge-connected with the package base 2, that is, the square boss 201 of the package base 2 is embedded into the square groove 104 of the base 1, and the square boss 105 of the base 1 is embedded into the square groove 202 of the package base 2. The sealing performance of the whole flying-chip type heat-sensitive explosion tube is ensured by adopting a laser welding mode at the joint.
As a verification implementation scheme, in the embodiment, the base 1, the packaging seat 2, the barrel 303 and the explosive loading ring 305 are all made of stainless steel (1Cr18Ni9Ti), the -level explosive 301 is HMX and is manually loaded, the secondary explosive 304 is HNS and is formed by pressing, the flying piece 302 is made of titanium foil and is formed by pressing, after assembly, a temperature-resistant safety test and a high-temperature detonation test are respectively carried out, the temperature-resistant safety test is carried out in a muffle furnace, the highest temperature which can be endured for 3min is taken as a judgment standard, the high-temperature detonation test adopts an ignition source firing test, and the detonation output at the temperature of 900 ℃ is taken as the judgment standard, namely a 1mm stainless steel plate is taken as a certificate board.
The test results are as follows: in a muffle furnace, the highest temperature which does not act within 3min is 350 ℃; in the fire test (900 deg.C), detonation can be relied on, and a stainless steel plate with the diameter of 1mm is perforated.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (7)
- The flyer type thermal detonator is characterized by comprising a base, a packaging seat and a booster sequence, wherein the booster sequence is installed on the base and packaged through the packaging seat, a cylindrical containing cavity and a second cylindrical containing cavity which are connected are arranged on the base, the inner diameter of the second cylindrical containing cavity is larger than that of a th cylindrical containing cavity, a base square groove and a base square boss are arranged on the side of the second cylindrical containing cavity on the base, the base square groove is located on the inner side of the base square boss, the booster sequence comprises -grade explosive and secondary explosive, the -grade explosive is matched with the th cylindrical containing cavity, a flyer is arranged beside the -grade explosive, a gun barrel is arranged on the outer side of the flyer barrel, an explosive ring is arranged on the outer side of the explosive ring, the inner side of the explosive ring is provided with the secondary explosive, the packaging seat comprises a packaging square boss and a packaging square groove which are matched with the base square groove and the base square boss, a third cylindrical containing cavity is arranged on the packaging seat in the opening direction, a thin sheet is arranged on the inner side of the second cylindrical.
- 2. The flying-chip thermal detonator according to claim 1, wherein:the base and the packaging seat are sealed in a laser welding mode.
- 3. The flying-chip thermal detonator according to claim 1, wherein:the lower part of the base is provided with a threaded hole.
- 4. The flying-chip thermal detonator according to claim 1, wherein:the grade explosive and the secondary explosive are temperature-resistant explosives, and comprise or more of HMX, CL-20, PYX, HNS or LLM-105.
- 5. The flying-chip thermal detonator according to claim 1, wherein:the flyer is made of a metal material.
- 6. The flying-chip thermal detonator according to claim 5, wherein:the metal material is kinds of aluminum, copper, titanium and stainless steel.
- 7. The flying plate type thermal detonator according to claim 1, wherein the charge ring is made of temperature-resistant material with suitable thermal conductivity coefficient, comprising kinds or more of alloy steel, porous ceramic and phenolic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028947.1A CN108225133B (en) | 2018-01-12 | 2018-01-12 | flyer type thermosensitive detonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028947.1A CN108225133B (en) | 2018-01-12 | 2018-01-12 | flyer type thermosensitive detonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108225133A CN108225133A (en) | 2018-06-29 |
| CN108225133B true CN108225133B (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810028947.1A Active CN108225133B (en) | 2018-01-12 | 2018-01-12 | flyer type thermosensitive detonator |
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| Country | Link |
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| CN (1) | CN108225133B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4039149A1 (en) * | 1989-12-08 | 1991-06-13 | Fraunhofer Ges Forschung | Igniting propellant powder at high temp. after coating - with partly burned pyrotechnic material forced through perforated disc |
| CN104456077A (en) * | 2014-11-18 | 2015-03-25 | 中国工程物理研究院化工材料研究所 | Thermosensitive detonating tube |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6047643A (en) * | 1997-12-12 | 2000-04-11 | Eg&G Star City, Inc. | Hermetically sealed laser actuator/detonator and method of manufacturing the same |
| SE0302916D0 (en) * | 2003-11-04 | 2003-11-04 | Comtri Teknik Ab | Replaceable drive cartridge |
-
2018
- 2018-01-12 CN CN201810028947.1A patent/CN108225133B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4039149A1 (en) * | 1989-12-08 | 1991-06-13 | Fraunhofer Ges Forschung | Igniting propellant powder at high temp. after coating - with partly burned pyrotechnic material forced through perforated disc |
| CN104456077A (en) * | 2014-11-18 | 2015-03-25 | 中国工程物理研究院化工材料研究所 | Thermosensitive detonating tube |
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| Publication number | Publication date |
|---|---|
| CN108225133A (en) | 2018-06-29 |
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