Electronic detonator resistant to explosive impact
By designing a stamped convex structure on the reinforcing cap of the electronic detonator to form a high-density locking zone, the problems of explosive spillage and cap displacement under explosion impact in traditional electronic detonators are solved, thus improving safety and economy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YAHUA GROUP MIANYANG INDAL
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional electronic detonators are prone to spillage of the detonating charge and displacement of the reinforcing cap under the impact of an explosion, resulting in misfires that affect the safety of blasting operations and the progress of construction.
Design an electronic detonator resistant to explosive impact. Employ a stamped convex structure with a reinforced cap, placing the ignition hole at the center of the base plate. The stamped convex structure and annular wall form a high-density locking zone, enhancing the compactness of the detonating charge.
The amount of detonating explosives spilled is reduced by 90%, the amount of detonating explosives used is reduced by 15-20%, the misfire rate is reduced from 1% to 0.001%, and the safety of blasting operations is improved.
Smart Images
Figure CN224580810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of civilian explosives technology, and in particular to an electronic detonator resistant to explosive impact. Background Technology
[0002] Traditional electronic detonators generally consist of a casing, inside which, from bottom to top, are arranged the main charge, the detonating charge, the reinforcing cap, and the electronic ignition element. The reinforcing cap has a ignition hole.
[0003] In existing technologies, reinforcing caps are generally flat-topped caps, meaning the ignition hole is located on the top plate of the reinforcing cap. Examples include Chinese utility model patents with application numbers 201621246137.6, 202421077228.6, 202121624818.2, and 202220498321.9, among many others. However, in actual use, multiple electronic detonators are needed for the same blasting area, and these detonators are not detonated simultaneously. When one electronic detonator is detonated, the resulting shock wave impacts other nearby electronic detonators. Sometimes, this can cause the explosive charge at the ignition hole of other electronic detonators to spill out towards the electronic ignition element, or cause the reinforcing cap to shift, resulting in some electronic detonators becoming misfires. This poses a safety hazard to blasting operations, especially underground blasting, and affects the construction progress. Utility Model Content
[0004] The technical problem solved by this utility model is to provide an electronic detonator that is resistant to explosive impact.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an electronic detonator resistant to explosive impact, including a tube shell, wherein the tube shell is provided with a main charge, an initiating charge, a reinforcing cap and an electronic ignition element in sequence from bottom to top, the reinforcing cap covers the initiating charge, the top plate of the reinforcing cap has a stamped protrusion protruding towards the main charge, and the bottom plate of the stamped protrusion is provided with a ignition hole.
[0006] In one embodiment, the fire transmission hole is located at the center of the base plate.
[0007] In one embodiment, the reinforcing cap further includes an annular surrounding wall disposed along the edge of the top plate, the stamped protrusion being located within the hollow region of the annular surrounding wall, and the outer peripheral wall of the annular surrounding wall contacting the inner peripheral wall of the tube shell.
[0008] In one embodiment, the stamped protrusion, top plate, and annular wall are integrally formed as a single structure.
[0009] In one embodiment, the inner diameter of the stamped protrusion is 2mm-6mm.
[0010] In one embodiment, the inner diameter of the stamped protrusion is 3mm-4mm.
[0011] In one embodiment, the inner diameter of the stamped protrusion is 3mm-3.5mm.
[0012] In one embodiment, the protrusion height of the stamped bulge is 1mm-4mm.
[0013] In one embodiment, the protrusion height of the stamped bulge is 1.5mm-2.5mm.
[0014] In one embodiment, the protrusion height of the stamped bulge is 1.5mm-2mm.
[0015] The beneficial effects of this utility model are as follows: The reinforcing cap structure in this blast-resistant electronic detonator is novel. The stamped protrusion on the reinforcing cap can apply pressure to the detonating charge area near the ignition hole during the forming process, making the detonating charge in the area near the stamped protrusion denser and forming a high-density locking zone. This helps to improve the phenomenon of detonating charge spilling out of the ignition hole when the electronic detonator is subjected to blast impact, reduces the risk of misfires, and improves the safety of blasting operations. At the same time, it can also reduce the amount of detonating charge used to a certain extent. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 This is a partial cross-sectional view of an explosive-resistant electronic detonator according to Embodiment 1 of this utility model.
[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 This is a schematic diagram of the reinforcing cap in the explosive-resistant electronic detonator according to Embodiment 1 of this utility model.
[0020] Explanation of icon numbers:
[0021] 1. Tube shell;
[0022] 2. Main charge;
[0023] 3. Detonating explosive;
[0024] 4. Reinforcing cap; 41. Top plate; 42. Stamped protrusion; 421. Bottom plate; 43. Fire transmission hole; 44. Annular enclosure;
[0025] 5. Electronic ignition element. Detailed Implementation
[0026] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.
[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.
[0030] Furthermore, if the meaning of "and / or" appears throughout the text, it refers to three parallel solutions. For example, "and / or" includes solution 1, solution 2, and solution 3, which simultaneously satisfy the above conditions. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0032] Example 1
[0033] Please refer to Figures 1 to 3 The first embodiment of this utility model is: an electronic detonator resistant to explosive impact, including a tube shell 1. The tube shell 1 is provided with a main charge 2, an initiating charge 3, a reinforcing cap 4, and an electronic ignition element 5 from bottom to top. The reinforcing cap 4 covers the initiating charge 3. The top plate 41 of the reinforcing cap 4 has a stamped protrusion 42 protruding towards the main charge 2. The bottom plate 421 of the stamped protrusion 42 is provided with a ignition hole 43. Preferably, the ignition hole 43 is located at the center of the bottom plate 421.
[0034] The reinforcing cap 4 also includes an annular wall 44 provided along the edge of the top plate 41. The stamped protrusion 42 is located in the hollow area of the annular wall 44. The outer peripheral wall of the annular wall 44 contacts the inner peripheral wall of the shell 1. When the stamped protrusion 42 is formed, the detonating explosive 3 in the vicinity of the stamped protrusion 42 becomes denser and also transmits pressure to the annular wall 44, thereby making the annular wall 44 and the shell 1 more closely in contact, thus improving the displacement phenomenon of the reinforcing cap 4, and enabling the electronic detonator resistant to explosive impact to be detonated more smoothly.
[0035] The stamped protrusion 42, the top plate 41, and the annular wall 44 are integrally formed structures, that is, the reinforcing cap 4 is an integral structural component, which is conducive to controlling the manufacturing cost of the reinforcing cap 4.
[0036] In one or more embodiments, the inner diameter of the stamped protrusion 42 is 2mm-6mm, preferably 3mm-4mm, and more preferably 3mm-3.5mm.
[0037] In one or more embodiments, the protrusion height of the stamped protrusion 42 is 1mm-4mm, preferably 1.5mm-2.5mm, and more preferably 1.5mm-2mm.
[0038] The detonating charge 3 can be nickel hydrazine nitrate, etc., and the main charge 2 can be a high explosive such as RDX (RDX) or PETN (PETN).
[0039] Experimental tests showed that, under the same conditions, this blast-resistant electronic detonator reduces the amount of initiating explosive by about 90% compared to traditional electronic detonators; with the same explosive power, the amount of initiating explosive can be reduced by 15% to 20%; and after being subjected to a close-range blast impact of 3-5cm, the misfire rate of the electronic detonator drops from 1% to about 0.001%.
[0040] As a feasible example, when processing this blast-resistant electronic detonator, the main charge and the detonating charge are first loaded into the tube shell in sequence. Then, the flat cap is snapped in and pressed together using a flat punch. The pressing pressure is 35-45 MPa. Next, a re-pressing process is carried out, in which a trapezoidal punch is used to punch the ignition hole of the flat cap to form a punched protrusion with a height of 1mm-4mm, thereby obtaining the reinforcing cap in this embodiment. The diameter of the punching end of the trapezoidal punch is 2mm-6mm, the inclination angle is 15°, the pressure is 110 MPa, and the holding time is 3 seconds. Finally, the electronic ignition element is installed.
[0041] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. An electronic detonator resistant to explosive impact, characterized in that: The device includes a casing, inside which, from bottom to top, are arranged a main charge, an initiating charge, a reinforcing cap, and an electronic ignition element. The reinforcing cap covers the initiating charge, and the top plate of the reinforcing cap has a stamped protrusion protruding towards the main charge. The bottom plate of the stamped protrusion has a ignition hole.
2. The explosion impact resistant electronic detonator according to claim 1, characterized in that: The fire transmission hole is located at the center of the base plate.
3. The explosion impact resistant electronic detonator according to claim 1, characterized in that: The reinforcing cap also includes an annular surrounding wall provided along the edge of the top plate, the stamped protrusion being located in the hollow area of the annular surrounding wall, and the outer peripheral wall of the annular surrounding wall contacting the inner peripheral wall of the tube shell.
4. The explosion impact resistant electronic detonator of claim 1, wherein: The stamped bulge, top plate, and annular wall are integrally formed into a single structure.
5. The explosion impact resistant electronic detonator of claim 1, wherein: The inner diameter of the stamped convex bulge is 2mm-6mm.
6. The electronic detonator resistant to explosive shock according to claim 5, characterized in that: The inner diameter of the stamped convex bulge is 3mm-4mm.
7. The explosion impact resistant electronic detonator according to claim 6, characterized in that: The inner diameter of the stamped convex bulge is 3mm-3.5mm.
8. The explosion impact resistant electronic detonator of claim 1, wherein: The protrusion height of the stamped convex bulge is 1mm-4mm.
9. The electronic detonator resistant to explosive shock according to claim 8, characterized in that: The protrusion height of the stamped bulge is 1.5mm-2.5mm.
10. The explosion impact resistant electronic detonator according to claim 9, characterized in that: The protrusion height of the stamped bulge is 1.5mm-2mm.