CN113945125A - Reinforced cap for preventing thick shell explosive element from accidentally loosing its internal medicine - Google Patents
Reinforced cap for preventing thick shell explosive element from accidentally loosing its internal medicine Download PDFInfo
- Publication number
- CN113945125A CN113945125A CN202111088456.4A CN202111088456A CN113945125A CN 113945125 A CN113945125 A CN 113945125A CN 202111088456 A CN202111088456 A CN 202111088456A CN 113945125 A CN113945125 A CN 113945125A
- Authority
- CN
- China
- Prior art keywords
- shell
- thick
- cap
- reinforcing cap
- explosive element
- 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.)
- Pending
Links
- 239000002360 explosive Substances 0.000 title claims abstract description 63
- 239000003814 drug Substances 0.000 title claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 14
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims 1
- 235000011613 Pinus brutia Nutrition 0.000 claims 1
- 241000018646 Pinus brutia Species 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 1
- 238000004880 explosion Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention discloses a structure for preventing a reinforcing cap and the medicine contained in the reinforcing cap from accidentally loosening for a thick-shell explosive element, which comprises a thick-shell explosive element tube shell, a reinforcing cap, the medicine filled in the cap and pressed medicine filled; the shell of the thick-shell explosive element is provided with a blind hole from top to bottom, the opening part of the reinforcing cap is coaxially arranged in the blind hole of the shell of the thick-shell explosive element from bottom to top, a cavity is formed between the blind hole and the reinforcing cap, and the inside of the cavity is sequentially provided with cap-in explosive charge and press-fit explosive charge from top to bottom; the bottom of the blind hole of the shell of the thick-shell explosive element is provided with a circle of ring groove, and the ring groove has quasi-fluid property before compression charge compaction, so that in the process of compression charge of the reinforcing cap along the inner wall of the shell of the thick-shell explosive element, the opening part of the reinforcing cap can expand outwards along the radial direction and extend into the ring groove of the shell of the thick-shell explosive element to form a snap ring structure in cooperation with the inner wall of the ring groove, and accidental loosening caused by shock, collision, falling and the like when fuse service treatment is carried out on the reinforcing cap and the internal medicine of the reinforcing cap are structurally avoided.
Description
Technical Field
The invention belongs to the technical field of fuzes and ammunitions, and particularly relates to a reinforcing cap for preventing a thick-shell explosive element and a structure for preventing the explosive in the reinforcing cap from accidentally loosening.
Background
The closing structure of the existing fuse and ammunition explosive element enables parts such as a cover plate, a reinforcing cap and the like for sealing the explosive element charge to be structurally closed and axially fixed by a tube shell, so that the purposes of preventing the explosive element charge from falling and loosening and further preventing the internal charge from loosening and scattering are achieved, and the problems of structural safety and performance reliability of the explosive element are fundamentally improved. At present, most thin shell sensitive explosive elements have adopted a closed-end structure. However, for thick-shell explosive elements, such as a detonator booster, a squib, a projectile or an expansion tube and a central booster in a battle part, the requirements of the mouth structure and the interface shape are met, a closed structure is not adopted, and the traditional structure that the original cylindrical shell-shaped reinforcing cap is pressed into a cylindrical blind hole in the shell of the explosive element is still adopted. The reinforcing cap of the thick-shell explosive element and the charge thereof are pressed into the shell of the tube, and a positioning (fixed distance, fixed height and fixed depth) pressing process method is not generally adopted. Because if the medicine is filled repeatedly in the process of filling the medicine, the accidental fire and explosion caused by the overlarge pressure caused by the positioning pressing process are likely to happen; if the powder charge accidentally spills (dissipates) in the charging process, the preset density cannot be reached, and even the powder charge is still in a loose state, so that the use safety and power are influenced. Therefore, a constant pressure process should be used. However, the final depth (height) of the reinforcing cap obtained by the constant pressure process is not uniform and has a certain dispersion. In order not to affect reliable explosion propagation, an adjusting pad is not arranged in the fuse structure to prevent the reinforcing cap from moving and loosening in the fuse. Due to the fact that the reinforcing caps are different in material and size, explosive charging types and densities and the pipe shell aperture size precision is different, radial expansion of the pressed reinforcing caps and the difference between radial pressure generated by the radial expansion and corresponding axial friction force are large, and it is difficult to guarantee that the reinforcing caps and the explosive loaded in the reinforcing caps cannot be accidentally loosened or even fall off due to impact generated by vibration, collision, falling and the like in the service processing process. After the reinforcing cap is loosened and falls off, explosive charges in the reinforcing cap can be loosened and scattered or are easily rubbed by relative displacement, so that potential safety hazards are formed, meanwhile, the reinforcing cap is loosened and falls off, the sealing performance of a insensitive explosion element such as a booster tube to flame is easily lost, and the high-temperature high-pressure gas fire fleeing formed by accidental firing explosion of the detonator at an isolation position is enabled to pass through a gap between the reinforcing cap and a tube shell so as to accidentally ignite or detonate the charges in the tube shell of the insensitive explosion element.
Disclosure of Invention
The invention aims to provide a structure for preventing a reinforcing cap and a medicine contained in the reinforcing cap from accidentally loosening for a thick-shell explosive element, so as to improve the safety and the performance reliability of the explosive charging of a detonator.
The technical solution for realizing the purpose of the invention is as follows: a structure for preventing a reinforcing cap and a medicine contained in the reinforcing cap from accidentally loosening for a thick-shell explosive element comprises a thick-shell explosive element tube shell, a reinforcing cap, a medicine filled in the cap and a pressed medicine filled; the shell of the thick-shell explosive element is provided with a blind hole from top to bottom, the opening part of the reinforcing cap is coaxially arranged in the blind hole of the shell of the thick-shell explosive element from bottom to top, a cavity is formed between the blind hole and the reinforcing cap, and the inside of the cavity is sequentially provided with cap-in explosive charge and press-fit explosive charge from top to bottom; the bottom of the blind hole of the shell of the thick-shell explosive element is provided with a circle of ring groove, and the ring groove has quasi-fluid characteristics before compression charging compaction, so that in the process of reinforcing the cap edge and compressing the inner wall of the shell of the thick-shell explosive element, the reinforcing cap opening part can expand outwards along the radial direction and extend into the ring groove of the shell of the thick-shell explosive element to form a snap ring structure in cooperation with the inner wall of the ring groove, and the reinforcing cap and the inner explosive in the shell are prevented from being loosened accidentally.
Furthermore, a plurality of openings are annularly distributed along the opening part of the reinforcing cap, and the opening part extends into the annular groove of the shell of the thick-shell explosive element, so that the radial expansion of the opening part of the reinforcing cap can be favorably realized in the pressing process to be clamped into the annular groove of the shell of the thick-shell explosive element.
Furthermore, the height of the charge in the cap pre-pressed in the reinforcing cap is consistent with the height of the part of the reinforcing cap without the opening, so that the part of the opening of the reinforcing cap opening can realize radial expansion at a preset position and be accurately clamped into an inner ring groove of the shell of the thick-shell explosive element in the explosive pressing process.
Compared with the prior art, the invention has the following remarkable advantages: the structure between the reinforcing cap and the shell of the thick-shell explosive element and the characteristics of the loose explosive pressing process are skillfully utilized, no additional auxiliary part is added, the original design is slightly changed, and the manufacture is convenient.
The invention is described in further detail below with reference to the figures and the detailed description.
Drawings
FIG. 1 is an axial cross-sectional view of an embodiment of a thick shell explosive element reinforcing cap and its contents accidental release prevention structure.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, a structure for preventing a reinforcing cap and the medicine contained in the reinforcing cap from accidentally loosening for a thick-shell explosive element comprises a shell 1 of the thick-shell explosive element, a reinforcing cap 2, the medicine contained in the cap 3 and a pressed medicine 4. The thick-shell explosive elements are fuse detonating tubes, igniting tubes, expanding tubes and central tubes in the projectile or battle part.
Taking a thick-shell explosive element tube shell 1 adopting a detonator booster as an example, an opening part of a reinforcing cap 2 is downwards coaxially arranged in the booster tube shell 1 to form a cavity between the two, and a cap internal explosive 3 (for booster charge) and a pressing charge 4 (for booster charge) are sequentially arranged in the cavity from top to bottom; an annular groove is arranged at the bottom of the blind hole of the booster shell 1, 3-9 openings are preset at the opening part of the reinforcing cap 2 matched with the annular groove, the depth of each opening is matched with the height of the annular groove of the booster shell 1, and the width of each opening is as narrow as possible. The height of the medicine 3 in the reinforcing cap 2 is the same as the height of the part of the reinforcing cap 2 which is not notched.
During assembly, loose pressed explosive charges 4 are filled in the booster shell 1, and the mouth part of the reinforcing cap 2 pressed with the explosive charges 3 in the cap is downwards buckled into the booster shell 1 filled with the pressed explosive charges 4. In the process of pressing and pressing the reinforcing cap 2 axially, the loose pressed charge 4 has certain fluid characteristics before being compacted, which is equivalent to quasi fluid, and the side wall of the opening part of the reinforcing cap 2 can expand radially along the annular groove extending into the booster shell 1 to form a snap ring structure, so that the accidental loosening caused by the impact generated by vibration, collision, falling and the like when the fuse service processing is carried out on the reinforcing cap and the charge thereof is fundamentally eliminated through the structural form.
The structure and principle of the explosion expanding pipe, the central explosion pipe and the fuse fire-transmitting pipe in the projectile or the battle part are the same as those of the fuse fire-transmitting pipe.
Claims (3)
1. A thick shell explosive component prevents strengthening cap and unexpected pine of medicine in it and takes off structure, its characterized in that: comprises a thick-shell explosive element tube shell (1), a reinforcing cap (2), a cap inner charge (3) and a pressing charge (4); the thick-shell explosive element tube shell (1) is provided with a blind hole from top to bottom, the opening part of the reinforcing cap (2) is arranged in the blind hole of the thick-shell explosive element tube shell (1) in a downward coaxial manner, a cavity is formed between the blind hole and the reinforcing cap (2) in a closed manner, and a cap internal charge (3) and a pressing charge (4) are sequentially arranged in the cavity from top to bottom; the bottom of the blind hole of the thick-shell explosive element tube shell (1) is provided with a circle of ring groove, and the pressing charge (4) has quasi-fluid characteristic before being compacted, so that in the pressing charge process of the reinforcing cap (2) along the inner wall of the thick-shell explosive element tube shell (1), the opening part of the reinforcing cap (2) can expand outwards along the radial direction and extend into the ring groove of the thick-shell explosive element tube shell (1) to form a snap ring structure in cooperation with the inner wall of the ring groove, and the reinforcing cap (2) and the charge in the reinforcing cap are prevented from being loosened accidentally.
2. A thick shell explosive member anti-loosening structure for reinforcing cap and its contents according to claim 1, wherein: a plurality of openings are annularly distributed along the opening part of the reinforcing cap (2), and the opening part extends into the annular groove of the thick-shell explosive element tube shell (1), so that the radial expansion of the opening part of the reinforcing cap (2) is favorably realized in the pressing process, and the reinforcing cap is clamped into the annular groove of the thick-shell explosive element tube shell (1).
3. A thick shell explosive member anti-loosening structure for reinforcing cap and its contents as claimed in claim 2, wherein: the height of the medicine (3) pre-pressed in the reinforcing cap (2) in the cap is consistent with the height of the part of the reinforcing cap (2) without the opening, so that the part of the opening of the reinforcing cap (2) can be radially expanded and accurately clamped into an inner annular groove of the shell (1) of the thick-shell explosive element at a preset position in the medicine pressing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111088456.4A CN113945125A (en) | 2021-09-16 | 2021-09-16 | Reinforced cap for preventing thick shell explosive element from accidentally loosing its internal medicine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111088456.4A CN113945125A (en) | 2021-09-16 | 2021-09-16 | Reinforced cap for preventing thick shell explosive element from accidentally loosing its internal medicine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113945125A true CN113945125A (en) | 2022-01-18 |
Family
ID=79328221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111088456.4A Pending CN113945125A (en) | 2021-09-16 | 2021-09-16 | Reinforced cap for preventing thick shell explosive element from accidentally loosing its internal medicine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113945125A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1464577A (en) * | 1973-05-23 | 1977-02-16 | American Flange & Mfg | Container closures |
| US6736068B1 (en) * | 1999-09-06 | 2004-05-18 | Dyno Nobel Sweden Ab | Detonator |
| CN201229150Y (en) * | 2008-04-28 | 2009-04-29 | 北京铱钵隆芯科技有限责任公司 | Reinforced cap for detonator |
| US20100064923A1 (en) * | 2006-11-28 | 2010-03-18 | Schott Ag | Firing apparatus for a pyrotechnic protection apparatus |
| CN205186865U (en) * | 2015-10-23 | 2016-04-27 | 中铁电气化局集团宝鸡器材有限公司 | Anticreep type pipe cap |
| CN107923729A (en) * | 2015-07-27 | 2018-04-17 | 壳牌冲击科技有限公司 | Firearm cartridge and manufacture method |
| CN211120874U (en) * | 2019-11-11 | 2020-07-28 | 山东科技大学 | Novel reinforcing cap with energy gathering holes for detonator |
| CN113175852A (en) * | 2021-04-16 | 2021-07-27 | 南京理工大学 | Detonator energy-gathering jet power-enhanced booster detonator with isolation block inside |
-
2021
- 2021-09-16 CN CN202111088456.4A patent/CN113945125A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1464577A (en) * | 1973-05-23 | 1977-02-16 | American Flange & Mfg | Container closures |
| US6736068B1 (en) * | 1999-09-06 | 2004-05-18 | Dyno Nobel Sweden Ab | Detonator |
| US20100064923A1 (en) * | 2006-11-28 | 2010-03-18 | Schott Ag | Firing apparatus for a pyrotechnic protection apparatus |
| CN201229150Y (en) * | 2008-04-28 | 2009-04-29 | 北京铱钵隆芯科技有限责任公司 | Reinforced cap for detonator |
| CN107923729A (en) * | 2015-07-27 | 2018-04-17 | 壳牌冲击科技有限公司 | Firearm cartridge and manufacture method |
| CN205186865U (en) * | 2015-10-23 | 2016-04-27 | 中铁电气化局集团宝鸡器材有限公司 | Anticreep type pipe cap |
| CN211120874U (en) * | 2019-11-11 | 2020-07-28 | 山东科技大学 | Novel reinforcing cap with energy gathering holes for detonator |
| CN113175852A (en) * | 2021-04-16 | 2021-07-27 | 南京理工大学 | Detonator energy-gathering jet power-enhanced booster detonator with isolation block inside |
Non-Patent Citations (1)
| Title |
|---|
| 殷;闻泉;王雨时;张志彪;: "钝感爆炸元件管壳收口对装药密度影响的仿真研究" * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220118 |