CN109232147A - A kind of composite profile primacord of redundancy - Google Patents
A kind of composite profile primacord of redundancy Download PDFInfo
- Publication number
- CN109232147A CN109232147A CN201810965205.1A CN201810965205A CN109232147A CN 109232147 A CN109232147 A CN 109232147A CN 201810965205 A CN201810965205 A CN 201810965205A CN 109232147 A CN109232147 A CN 109232147A
- Authority
- CN
- China
- Prior art keywords
- detonating cord
- flexible
- shaped
- bracket
- redundant combined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000009826 distribution Methods 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 229920001684 low density polyethylene Polymers 0.000 claims description 6
- 239000004702 low-density polyethylene Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 4
- 239000007767 bonding agent Substances 0.000 abstract 2
- 239000011247 coating layer Substances 0.000 description 10
- 238000000926 separation method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 3
- 238000005474 detonation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C5/00—Fuses, e.g. fuse cords
- C06C5/04—Detonating fuses
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of composite profile primacords of redundancy, comprising: bracket, mild detonating fuze, bonding agent and cover board；Wherein, the mild detonating fuze is seated in the groove that the bracket opens up, and the cover board is mutually be bonded with the mild detonating fuze by the bonding agent；The cover board is set in the groove that the bracket opens up.The present invention designs special-shaped primacord using fabricated structure, and built-in mild detonating fuze and the molding of outer cladding structure are mutually indepedent, fundamentally solve current covering material matter is hard, form after pyrocondensation the problems such as；" combined type " structure can make to install more mild detonating fuzes inside special-shaped primacord, not only realize structural redundancy, but also make that the distribution mode of mild detonating fuze is more flexible, Energy distribution is more uniform, to improve capacity usage ratio.
Description
Technical Field
The invention relates to a redundant combined type special-shaped detonating fuse, which is suitable for separation of a carrier rocket fairing and belongs to the technical field of linear pollution-free separation.
Background
With the rapid development of the aerospace field, the use requirement of the linear separation device is higher and higher, and indexes such as the use reliability, the environmental adaptability, the pollution amount and the installation convenience of the product are higher than ever before except that the conventional separation performance requirement is required to be met.
The traditional mode of producing the special-shaped detonating cord by extruding low-density polyethylene through the flexible detonating cord and molding at one time has higher requirement on the temperature resistance of the medicament filled in the flexible detonating cord, small selection range of the outer coating material, narrow selection range of the molding process method, high requirement on extrusion molding equipment, hard quality of the extrusion molding material and thermal shrinkage after molding; the flexible detonating cord is distributed in the middle of the special-shaped detonating cord and only has 1 detonating cord, the structure is non-redundant, the reliability index of the special-shaped detonating cord is difficult to improve, and the energy utilization rate of the flexible detonating cord is low.
Disclosure of Invention
The technical problem solved by the invention is as follows: the invention overcomes the defects of the prior art, provides a redundant combined special-shaped detonating cord, and effectively solves the problems by adopting a combined structure to design the special-shaped detonating cord, and the forming of the built-in flexible detonating cord and the outer cladding structure is independent from each other: 1) the outer coating material is not limited by the temperature resistance of the medicament filled in the flexible detonating cord any more, the selection range of the outer coating material is greatly increased, the selection range of the forming process method is optimized, the requirement on forming equipment is lowered, and the problems of hard quality, thermal shrinkage after forming and the like of the existing coating material are fundamentally solved; 2) the outer coating layer is independently formed, so that large-scale continuous production can be realized, the increase of the length of a finished product of the special-shaped detonating cord can be realized after the flexible detonating cord is arranged in the outer coating layer and is locally butted, and the applicability of the length required by the use of the product is greatly improved; 3) the outer coating layer is formed independently, so that the product rejection rate caused by the appearance and the external dimension of the outer coating layer are greatly reduced, the parts with the out-of-tolerance can be spliced after being partially removed, the production cost is reduced, the production period is shortened, and the cost loss caused by the rejection of the flexible detonating fuse of the built-in key core element due to the rejection of the outer coating layer is avoided; 4) the combined structure can ensure that a plurality of flexible detonating cords are arranged in the special-shaped detonating cords, so that structural redundancy is realized, the distribution mode of the flexible detonating cords is more flexible, and the energy distribution is more uniform, thereby improving the energy utilization rate and overcoming the problem of low energy utilization rate of the traditional special-shaped detonating cords; 5) the combined structure can enable the cross section form of the outer cladding layer bracket to be more diversified, and various support structures such as oval, I-shaped, round, square and star shapes can be manufactured according to requirements, so that different requirements of support and impact energy buffering are met.
The purpose of the invention is realized by the following technical scheme: a redundant modular profiled detonating cord comprising: the device comprises a bracket, a flexible detonating cord, an adhesive and a cover plate; the flexible detonating cord is filled in a groove formed in the support, and the cover plate is bonded with the flexible detonating cord through the adhesive; the cover plate is arranged in a groove formed in the support.
In the redundant combined type special-shaped detonating cord, the bracket is made of low-density polyethylene or rubber.
In the redundant combined type special-shaped detonating cord, the adhesive is flexible or elastic adhesive.
In the redundant combined type special-shaped detonating cord, the number of the grooves for mounting the flexible detonating cord on the bracket is not less than 1, and the distribution form of the grooves adopts a symmetrical form or an asymmetrical form.
In the redundant combined special-shaped detonating cord, the number of the flexible detonating cords is not less than 1, and the charge linear density range of the flexible detonating cords is 0.3 g/m-10 g/m.
In the redundant combined type special-shaped detonating cord, the cover plate is made of low-density polyethylene or rubber.
In the redundant combined type special-shaped detonating cord, the cross section of the bracket is in an oval shape, an I-shaped shape, a round shape, a square shape or a star shape.
In the redundant combined type special-shaped detonating cord, the width range of the section of the bracket is 5 mm-30 mm, and the height range is 5 mm-30 mm.
Compared with the prior art, the invention has the following beneficial effects:
【1】 The special-shaped detonating cord adopts a 'combined' structure to design the special-shaped detonating cord, the inner flexible detonating cord and the outer cladding structure are formed independently, the outer cladding material is not limited by the temperature resistance of the inner medicament, the selection range of the outer cladding material is greatly increased, and the problems of hard quality and thermal shrinkage of the existing cladding material are fundamentally solved.
【2】 The combined structure of the invention can ensure that a plurality of flexible detonating cords are arranged in the special-shaped detonating cords, thereby realizing structural redundancy and ensuring that the energy distribution is more uniform and the energy utilization rate is improved.
【3】 The invention is convenient to install and use, is convenient for workers to improve the loading and unloading efficiency, and has wide market application prospect.
【4】 The invention has compact integral structure, is suitable for various working environments, can still be normally used under complex working conditions and has strong operability.
【5】 The size and the installation position of the flexible detonating cord can be flexibly set according to the actual situation, and the requirements of different separation indexes are met.
【6】 The invention can realize the large-scale continuous production of the special-shaped detonating cord, and can realize the increase of the finished length of the special-shaped detonating cord after the flexible detonating cord is arranged in the special-shaped detonating cord and is locally butted, thereby greatly improving the applicability of the length required by the use of the product.
【7】 The invention greatly reduces the product rejection rate caused by the out-of-tolerance of the appearance and the external dimension of the external cladding layer, the out-of-tolerance part can be spliced after being partially removed, the production cost is reduced, the production period is shortened, and the cost loss caused by the rejection of the internal key core element flexible detonating fuse caused by the rejection of the external cladding layer is avoided.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view of an elliptical horizontal structure of a redundant combined type special-shaped detonating cord provided by an embodiment of the invention;
FIG. 2 is a cross-sectional view of a flat rack provided by an embodiment of the present invention;
fig. 3 is a schematic view of an elliptical vertical structure of a redundant combined type special-shaped detonating cord provided by the embodiment of the invention;
fig. 4 is a schematic diagram of an i-shaped horizontal structure of a redundant combined type special-shaped detonating cord provided by the embodiment of the invention;
fig. 5 is a schematic diagram of an i-shaped vertical structure of a redundant combined type special-shaped detonating cord provided by the embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-2, a redundant combined type special-shaped detonating cord comprises a bracket 1, a flexible detonating cord 2, an adhesive 3 and a cover plate 4; the bracket 1 is provided with U-shaped grooves for mounting the flexible detonating cord 2, and the number of the U-shaped grooves is set according to the use requirement; the flexible detonating cord 2 is arranged in the U-shaped groove of the bracket 1, and the cover plate 4 and the bracket 1 are bonded into a whole after the flexible detonating cord 2 is filled with a proper amount of adhesive 3.
The bracket 1, the flexible detonating cord 2 and the cover plate 4 are processed in a grading way, and the bracket 1, the flexible detonating cord 2 and the cover plate 4 are assembled together through the adhesive 3.
The material of the holder 1 is an extruded material, such as low density polyethylene, or a material that can be compression molded, such as rubber.
Preferably, the number of the U-shaped grooves of the bracket 1 is 2, and the distribution mode of the U-shaped grooves is vertically distributed.
Preferably, the number of the flexible explosion wire 2 to be assembled is set to 2.
Preferably, the charge linear density of the flexible detonating cord 2 is set to 2.0 g/m.
Preferably, the stent 1 has a flat cross-sectional shape, a width of 10mm to 20mm, and a height of 10mm to 15 mm.
The cross section of the bracket 1 is diversified, and various support structures such as oval, I-shaped, round, square and star shapes can be manufactured according to requirements, so that different requirements of supporting and impact energy buffering are met. Fig. 3 is a schematic view of an elliptical vertical structure of a redundant combined type special-shaped detonating cord provided by the embodiment of the invention; fig. 4 is a schematic diagram of an i-shaped horizontal structure of a redundant combined type special-shaped detonating cord provided by the embodiment of the invention; fig. 5 is a schematic diagram of an i-shaped vertical structure of a redundant combined type special-shaped detonating cord provided by the embodiment of the invention. Fig. 3 to 5 depict several cross-sectional forms of the stent.
The working principle is as follows:
a redundant combined type special-shaped detonating cord uses a linear pollution-free separation technology of the special-shaped detonating cord for an expansion tube. The flexible detonating cord 2 is filled in the support 1, the support 1 and the flexible detonating cord 2 are combined into a whole through the adhesive 3 and the cover plate 4, the whole body is filled in the metal flat tube, after receiving an external detonation signal, the flexible detonating cord 2 is filled in the metal flat tube to work, explosive force and high-temperature and high-pressure gas are generated to rapidly act on the inner wall of the metal flat tube, the metal flat tube expands and deforms along the circumferential direction to do work, the preset separation function is realized, meanwhile, a detonation product is sealed in the metal flat tube, no fuel gas is leaked, and the metal flat tube expands to do work to complete the preset separation function.
This embodiment is through adopting modular structural design abnormal shape detonating cord, and the shaping of built-in flexible detonating cord and outer cladding structure is independent each other, has effectively solved several problems: 1) the outer coating material is not limited by the temperature resistance of the medicament filled in the flexible detonating cord any more, the selection range of the outer coating material is greatly increased, the selection range of the forming process method is optimized, the requirement on forming equipment is lowered, and the problems of hard quality, thermal shrinkage after forming and the like of the existing coating material are fundamentally solved; 2) the outer coating layer is independently formed, so that large-scale continuous production can be realized, the increase of the length of a finished product of the special-shaped detonating cord can be realized after the flexible detonating cord is arranged in the outer coating layer and is locally butted, and the applicability of the length required by the use of the product is greatly improved; 3) the outer coating layer is formed independently, so that the product rejection rate caused by the appearance and the external dimension of the outer coating layer are greatly reduced, the parts with the out-of-tolerance can be spliced after being partially removed, the production cost is reduced, the production period is shortened, and the cost loss caused by the rejection of the flexible detonating fuse of the built-in key core element due to the rejection of the outer coating layer is avoided; 4) the combined structure can ensure that a plurality of flexible detonating cords are arranged in the special-shaped detonating cords, so that structural redundancy is realized, the distribution mode of the flexible detonating cords is more flexible, and the energy distribution is more uniform, thereby improving the energy utilization rate and overcoming the problem of low energy utilization rate of the traditional special-shaped detonating cords; 5) the combined structure can enable the cross section form of the outer cladding layer bracket to be more diversified, and various support structures such as oval, I-shaped, round, square and star shapes can be manufactured according to requirements, so that different requirements of support and impact energy buffering are met.
The above-described embodiments are merely preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (8)
1. A redundant combined type special-shaped detonating cord is characterized by comprising: the explosion-proof cable comprises a bracket (1), a flexible explosion-proof cable (2), an adhesive (3) and a cover plate (4); wherein,
the flexible detonating cord (2) is filled in a groove formed in the support (1), and the cover plate (4) is bonded with the flexible detonating cord (2) through the adhesive (3);
the cover plate (4) is arranged in a groove formed in the support (1).
2. A redundant combined profile detonating cord according to claim 1, characterized in that: the material of the bracket (1) is low-density polyethylene or rubber.
3. A redundant combined profile detonating cord according to claim 1, characterized in that: the adhesive (3) is a flexible or elastic adhesive.
4. A redundant combined profile detonating cord according to claim 1, characterized in that: the number of grooves for mounting the flexible detonating cord (2) of the bracket (1) is not less than 1, and the distribution form of the grooves adopts a symmetrical form or an asymmetrical form.
5. A redundant combined profile detonating cord according to claim 1, characterized in that: the number of the flexible detonating cords (2) is not less than 1, and the charge linear density range of the flexible detonating cords (2) is 0.3 g/m-10 g/m.
6. A redundant combined profile detonating cord according to claim 1, characterized in that: the cover plate (4) is made of low-density polyethylene or rubber.
7. A redundant combined profile detonating cord according to claim 1, characterized in that: the cross section of the bracket (1) is in an oval shape, an I-shaped shape, a round shape, a square shape or a star shape.
8. A redundant combined profile detonating cord according to claim 1, characterized in that: the width range of the section of the bracket (1) is 5 mm-30 mm, and the height range is 5 mm-30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965205.1A CN109232147B (en) | 2018-08-23 | 2018-08-23 | Redundant combined type special-shaped detonating fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965205.1A CN109232147B (en) | 2018-08-23 | 2018-08-23 | Redundant combined type special-shaped detonating fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109232147A true CN109232147A (en) | 2019-01-18 |
| CN109232147B CN109232147B (en) | 2020-11-20 |
Family
ID=65068520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810965205.1A Active CN109232147B (en) | 2018-08-23 | 2018-08-23 | Redundant combined type special-shaped detonating fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109232147B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215712A (en) * | 2022-06-29 | 2022-10-21 | 北京宇航系统工程研究所 | Flexible detonating cord cutting separator of unblock function redundancy |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5536990A (en) * | 1991-03-27 | 1996-07-16 | Thiokol Corporation | Piezoelectric igniter |
| US5969287A (en) * | 1997-12-16 | 1999-10-19 | Lockheed Martin Corporation | Separation system |
| CN201317466Y (en) * | 2008-12-03 | 2009-09-30 | 北京宇航系统工程研究所 | Continuous separation device for transversely separating expansion pipe |
| CN201317467Y (en) * | 2008-12-03 | 2009-09-30 | 北京宇航系统工程研究所 | Expansion pipe separation device with explosive cord center positioning function |
| CN103292641A (en) * | 2013-05-10 | 2013-09-11 | 北京宇航系统工程研究所 | Explosive separation device used for longitudinal separation of fairing |
| CN204295310U (en) * | 2014-11-05 | 2015-04-29 | 首都航天机械公司 | Special-shaped primacord fly-cutting stopping means |
| CN106403734A (en) * | 2016-06-17 | 2017-02-15 | 哈尔滨工程大学 | Low-shock line type explosion unlocking device |
| CN107585329A (en) * | 2017-08-10 | 2018-01-16 | 大连理工大学 | A kind of carrier rocket wire type bundlees separator |
-
2018
- 2018-08-23 CN CN201810965205.1A patent/CN109232147B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5536990A (en) * | 1991-03-27 | 1996-07-16 | Thiokol Corporation | Piezoelectric igniter |
| US5969287A (en) * | 1997-12-16 | 1999-10-19 | Lockheed Martin Corporation | Separation system |
| CN201317466Y (en) * | 2008-12-03 | 2009-09-30 | 北京宇航系统工程研究所 | Continuous separation device for transversely separating expansion pipe |
| CN201317467Y (en) * | 2008-12-03 | 2009-09-30 | 北京宇航系统工程研究所 | Expansion pipe separation device with explosive cord center positioning function |
| CN103292641A (en) * | 2013-05-10 | 2013-09-11 | 北京宇航系统工程研究所 | Explosive separation device used for longitudinal separation of fairing |
| CN204295310U (en) * | 2014-11-05 | 2015-04-29 | 首都航天机械公司 | Special-shaped primacord fly-cutting stopping means |
| CN106403734A (en) * | 2016-06-17 | 2017-02-15 | 哈尔滨工程大学 | Low-shock line type explosion unlocking device |
| CN107585329A (en) * | 2017-08-10 | 2018-01-16 | 大连理工大学 | A kind of carrier rocket wire type bundlees separator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215712A (en) * | 2022-06-29 | 2022-10-21 | 北京宇航系统工程研究所 | Flexible detonating cord cutting separator of unblock function redundancy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109232147B (en) | 2020-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109232147B (en) | Redundant combined type special-shaped detonating fuse | |
| CN102241166A (en) | Special-purposed cellular composite material used for small unmanned air vehicle | |
| CN110836621A (en) | Flexible energy-gathering cutting rope | |
| CN104948901A (en) | Manufacturing method of high-temperature and high-pressure gas cylinder with thin-wall metal lining structure | |
| CN113021824A (en) | Production method of gas-shielded flame-retardant cable | |
| CN114843027A (en) | Resistance to compression fireproof cable | |
| CN202213200U (en) | Thermal shrinkable pipe expanding mould and expanding device using same | |
| CN111923556B (en) | Large complex special-shaped curved surface composite heat-insulating layer and preparation method thereof | |
| CN110630404B (en) | Double-pulse solid engine | |
| CN101930816A (en) | Special type coaxial cable and manufacturing process thereof | |
| CN202088536U (en) | Special honeycomb composite material for minitype unmanned verticraft | |
| CN208232498U (en) | A kind of aluminum honeycomb panel of band connection mechanism | |
| CN116093507A (en) | Plastic-aluminum composite film capable of reducing glue overflow | |
| CN210897427U (en) | Battery module and have its vehicle | |
| CN209357480U (en) | Distributed photovoltaic power generation cable | |
| CN202888330U (en) | Cylindrical lithium battery pack | |
| CN210201383U (en) | MPP pipe of external pressure resistant | |
| CN208637194U (en) | Double-insulated cable | |
| CN207474791U (en) | A kind of water-proof connector | |
| CN108716575B (en) | Corrugated pipe | |
| CN107452442A (en) | A kind of fire-retardant electric power protecting pipes of PE | |
| CN105810335A (en) | Flexible light embedded composite heatproof sleeve pipe and production method thereof | |
| CN220551639U (en) | Insulating glass fiber pipe with self-locking structure | |
| CN212745368U (en) | High-temperature-resistant flame-retardant silicone tube | |
| CN104200894A (en) | Extrusion-resistant high-temperature resistant multifunctional cable for aviation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |