CN115406315A - Electronic digital detonator helpful for preventing accidental ignition and explosion rejection - Google Patents
Electronic digital detonator helpful for preventing accidental ignition and explosion rejection Download PDFInfo
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- CN115406315A CN115406315A CN202210993769.2A CN202210993769A CN115406315A CN 115406315 A CN115406315 A CN 115406315A CN 202210993769 A CN202210993769 A CN 202210993769A CN 115406315 A CN115406315 A CN 115406315A
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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
- F42C19/12—Primers; Detonators electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/40—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses an electronic digital detonator which is helpful for preventing accidental ignition and explosion rejection, and comprises a leg wire, a sealing plug, a tube shell, a cover plate, an inner sleeve, a control capacitor, an electronic control module, an ignition capacitor, a filling agent, a explosive head, a silk pad, an inner shell, a lining shell, an initiating explosive and a high explosive. The invention innovatively designs the structural reinforcement, vibration reduction, buffering and electromagnetic wave shielding of the component units such as the tube shell, the cover plate, the sealing plug, the inner sleeve, the filler, the lining shell, the inner shell and the like. The invention reduces the impact vibration and electromagnetic pulse generated after the first hole explosive explodes during storage and service processing to the electronic digital detonator, thus improving the safety and reliability of the electronic digital detonator. The invention does not need to increase the space size of the electronic digital detonator, has compact structure and slightly increases the cost.
Description
Technical Field
The invention belongs to the technology of electronic digital detonators, and particularly relates to an electronic digital detonator which is beneficial to preventing accidental ignition and misfire.
Background
The electronic digital detonator is a novel electric detonator which realizes delayed ignition by replacing delay powder in the traditional delay detonator with an electronic chip. Because the time delay precision is high, the rock blasting size can be more uniform; the blasting earthquake frequency can be controlled, and the blasting vibration amplitude is reduced; the method has the advantages of reducing slope damage and the like, so the method is gradually popularized and used in blasting engineering, and the defects of the electronic digital detonator are gradually shown along with the popularization.
Introduced in the research on the impact resistance test of industrial electronic detonators (Yang, in initiating explosive devices, pp.16-19 of No. 2 of 2022), although the electronic digital detonators rarely generate accidental ignition and misfire in the blasting of ordinary open-air large-section engineering, the electronic digital detonators generate more accidental ignition and misfire in small-section blasting engineering such as tunnels, wells, hole piles and the like. The main reason is that the distance between the explosion holes is too small, and the electromagnetic pulse and impact vibration generated by the explosion of the first explosion hole damage the electronic digital detonator, so that the electronic digital detonator is accidentally fired and fails to explode.
In the discussion on the influence of electromagnetic pulse on the popularization and application of electronic detonators (Wangmeng, in coal mine blasting, 2019, no. 5, pages 25-27), the gas temperature is raised by the huge energy generated by the explosion of the first-hole explosive, so that the gas is ionized to form plasma, and the root of the electromagnetic pulse is the radiation of the plasma. The electromagnetic pulse can directly interfere an electronic control module of the electronic digital detonator, mainly an electronic chip, so that the electronic chip cannot normally work, and the electronic digital detonator is prevented from being detonated. An electromagnetic field formed by electromagnetic pulse radiation can generate induced current on the surface of a metal target, and the induced current enters the electronic chip along a connecting line and a detonator shell, so that the circuit is disordered, error codes, reset and the like occur, and even relevant information can be erased; if the induced current is too large, electronic components can be burnt, so that the electronic chip is prevented from exploding.
Two types of electronic detonator impact resistance comparison test researches (Yangyu, a network first issue paper published in 2022, 5 and 30 days of blasting equipment) and electronic detonator small hole distance blasting failure test researches (Liu Zhong Min, 39-42 pages in 5 th of 2021, blasting equipment) are introduced, and the impact and the vibration generated by the blasting of the first-hole blasting explosive can cause the ignition powder head of the electronic digital detonator to be vibrated and broken, the data of an electronic chip to be disordered and the capacitance to drift. The electronic digital detonator is sequentially shown as temporary misfire, misfire due to structural damage of a priming element or sympathetic detonation along with the increase of the impact strength.
In 2018, 9 and 17, the department of safety production of industry and information and the public security department public security administration call for the intelligent manufacturing field popularization meeting of the civil explosion industry in Guiyang union, and the popularization and application of the electronic digital detonators are required, and the industrial digital electronic detonators are comprehensively used in 2022. In the face of increasing usage amount, higher requirements are put forward on the safety, reliability and stability of the electronic digital detonator. Therefore, the potential safety hazard of the electronic digital detonator in the small-section blasting operation needs to be solved urgently.
Optimization of electronic detonator blasting parameters in small-section tunneling (Jiangyun star, in chemical minerals and processing, on pages 5-9 of No. 8 of 2020), by reducing the charge amount and optimizing the cutting mode,
The setting of the delay time as 50ms and other ways of changing blasting parameters can reduce the probability of accidental firing and misfire of the electronic digital detonator. In the experimental research on two buffer materials for improving the shock wave resistance of industrial electronic detonators (Yueyaoxin, in coal mine blasting, page 3, 1-5 in 2021), the invention discovers that when a latex tube or a rubber heat-insulating material is coated on the outer side of an electronic digital detonator to serve as a buffer vibration-damping material, the influence of the energy of explosion shock waves on the electronic digital detonator can be attenuated, and the probability of accidental ignition and accidental explosion rejection is further reduced.
At present, no design scheme for comprehensively and systematically reinforcing an electronic digital detonator to reduce the influence of electromagnetic pulse and impact vibration from the structural angle is disclosed.
Disclosure of Invention
The invention aims to provide an electronic digital detonator which is beneficial to preventing accidental ignition and misfire so as to reduce the accidental ignition and misfire probability of the electronic digital detonator and improve the safety and reliability of the electronic digital detonator.
The technical solution for realizing the purpose of the invention is as follows: an electronic digital detonator which is helpful for preventing accidental ignition and explosion rejection comprises a leg wire, a sealing plug, a tube shell, a cover plate, an inner sleeve, a control capacitor, an electronic control module, an ignition capacitor, a explosive head, a silk pad, an inner shell, an inner lining shell, an initiating explosive, a first high explosive and a second high explosive which are coaxially arranged in the tube shell, and a filling agent filled around the explosive head; the tube shell is sequentially provided with a second high explosive, a first high explosive and an initiating explosive from bottom to top; the initiating explosive is filled in the lining shell, the outer part of the lining shell is sleeved with the inner shell, two end faces of the silk pad are tightly attached to the inner end face of the inner shell and the initiating explosive, and the initiating explosive is separated from a central hole in the inner shell to be restrained. The inner part of the inner sleeve is sequentially provided with a control capacitor, an electronic control module, an ignition capacitor, a medicine head and a filling agent filled around the medicine head from top to bottom; the input end of the explosive head is connected with the ignition capacitor; a sealing plug is arranged in a vacant position between the top surface of the cover plate and the end surface of the input end of the tube shell; the leg wire is connected with the control capacitor through the sealing plug, the cover plate and the inner sleeve in sequence.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the invention, through the optimized design of the integral structure and the composition units of the electronic digital detonator, the probability of accidental ignition and explosion rejection is reduced, and the safety and reliability of the electronic digital detonator are improved.
(2) The external dimension is not changed, and the use of the electronic digital detonator is not influenced.
(3) The whole structure is simple and compact, and the cost is only slightly increased.
Drawings
Fig. 1 is an axial cross-section of an electronic digital detonator useful in preventing accidental fires and misfires.
In the figure, 1 is a leg wire, 2 is a sealing plug, 3 is a tube shell, 4 is a cover plate, 5 is an inner sleeve, 6 is a control capacitor, 7 is an electronic control module, 8 is an ignition capacitor, 9 is a filling agent, 10 is a explosive head, 11 is a silk pad, 12 is an inner shell, 13 is a lining shell, 14 is an initiating explosive, 15 is a first high explosive, and 16 is a second high explosive.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
With reference to fig. 1, the electronic digital detonator helpful for preventing accidental ignition and misfire according to the present invention comprises a leg wire 1, a sealing plug 2, a tube shell 3, and a cover plate 4, an inner sleeve 5, a control capacitor 6, an electronic control module 7, an ignition capacitor 8, a filler 9, a powder head 10, a silk pad 11, an inner shell 12, a lining shell 13, a primary explosive 14, a first high explosive 15 and a second high explosive 16 coaxially arranged in the tube shell 3; the tube shell 3 is provided with a second high explosive 16, a first high explosive 15 and a primary explosive 14 from bottom to top in sequence; the initiating explosive 14 is filled in the lining shell 13, the lining shell is externally sleeved with the inner shell 12, the top surface of the inner shell 12 is provided with a central hole, two end surfaces of the silk mat 11 are tightly attached to the inner end surface of the inner shell 12 and the initiating explosive 14, and the initiating explosive 14 is separated from the central hole in the inner shell 12; a control capacitor 6, an electronic control module 7, an ignition capacitor 8, a medicine head 10 and a filling agent 9 filled around the medicine head are sequentially arranged in the inner sleeve 5 from top to bottom; the input end of the explosive head 10 is connected with the ignition capacitor 8; a sealing plug 2 is arranged in a vacant position between the top surface of the cover plate 4 and the end surface of the input end of the tube shell 3; the leg wire 1 is connected with the control capacitor 6 through the sealing plug 2, the cover plate 4 and the inner sleeve 5 in sequence.
Example 1
Referring to fig. 1, the electronic digital detonator helpful for preventing accidental ignition and misfire according to the present invention comprises a leg wire 1, a sealing plug 2, a tube shell 3, and a cover plate 4, an inner sleeve 5, a control capacitor 6, an electronic control module 7, an ignition capacitor 8, a filler 9, a powder head 10, a silk pad 11, an inner shell 12, a lining shell 13, a primary explosive 14, a first high explosive 15 and a second high explosive 16 coaxially arranged in the tube shell 3. The first high explosive 15 and the second high explosive 16 are both shellac granulated cyclonite. The tube shell 3 and the inner sleeve 5 are coaxially assembled, and both ends of the filling agent 9 are subjected to necking treatment along the radial direction to form a clamping structure so as to axially position the explosive head 10, the initiating explosive 14, the electronic control module 7 and the like, so that accidental ignition caused by the occurrence of moving friction agents or the formation of impact vibration effect to cause electronic components and structural damage to cause explosion rejection are prevented.
The tube shell 3 is punched by a copper-aluminum composite material, the outer layer material is copper, the inner layer material is aluminum, and the composite material can better attenuate impact vibration generated after the hole-blasting explosive is blasted, reduce the accidental firing and explosion rejection probability of the electronic digital detonator and improve the safety of the electronic digital detonator.
The inner sleeve 5 is made of nonmetal materials such as rubber or plastics and is positioned on the outer sides of the control capacitor 6, the electronic control module 7, the ignition capacitor 8, the filling agent 9 and the explosive head 10, so that electronic components are completely wrapped, impact vibration generated after the first-explosion hole explosive explodes can be further attenuated, the accidental ignition and explosion rejection probability of the electronic digital detonator is reduced, and the reliability of the electronic digital detonator is improved.
The filling agent 9 completely wraps the explosive head 10, the top surface is tightly attached to the ignition capacitor 8, the bottom surface is tightly attached to the inner shell 12 and the silk pad 11 in the inner shell 12, the filling agent is made of a foaming material which has certain elasticity and strength but does not influence the explosive head 10 to reliably ignite the primary explosive 14, the explosive head 10 can be effectively supported, the position of the primary explosive 14 is restrained, and the phenomenon that the primary explosive 14 cannot be ignited due to falling of the explosive head 10 and the electronic digital detonator is prevented from being refused to explode is avoided.
The cover plate 4 is a metal sheet such as a pure aluminum sheet, the bottom surface of the cover plate is tightly attached to the top surface of the inner sleeve 5, the top surface of the cover plate is tightly attached to the sealing plug 2, and the cover plate, the sealing plug 2 and the tube shell 3 together realize structural sealing and electromagnetic shielding on electronic components inside the electronic digital detonator, so that the influence of electromagnetic pulses generated after the first-time hole blasting explosive explodes on the electronic components inside the electronic digital detonator is reduced, the probability of the electronic digital detonator rejecting explosion is reduced, and the safety and the reliability of the electronic digital detonator are improved.
The tube shell 3 fixes the sealing plug 2 by radial compression to realize sealing, thereby enhancing the capability of the electronic digital detonator for isolating water vapor. When the mine works in a humid environment such as an underground mine and an underground mine, the electronic digital mine can be effectively prevented from being affected with damp and even being soaked in water, and the condition that the internal circuit or components of the electronic digital mine fail and then are prevented from being refused to explode is avoided.
The sealing plug 2 is made of conductive non-metal materials such as conductive rubber, so that the electromagnetic shielding effect of the internal structure of the electronic digital detonator is further improved, accidental ignition is prevented, and the safety and the reliability of the electronic digital detonator are improved.
Inner shell 12 and the coaxial cooperation of lining shell 13, inner shell 12 is the skin, lining shell 13 is the inlayer, the material of inner shell 12 is pure aluminium or aluminum alloy, the material of lining shell 13 is the stainless steel, both use the opposite direction intussuseption of opening to assemble together, its lateral wall forms compound baffle, reinforcing vibration isolation and flame proof effect, the shock vibration that can effectively prevent to produce after the hole explosive that explodes earlier leads to primary explosive 14 to be exploded by the sympathetic detonation, improves the security and the reliability of electronic digital detonator.
The working process of the invention is as follows: the electronic digital detonator is connected to the detonation system through a leg wire 1 and is connected to the detonation controller. The detonation controller carries out bidirectional data interaction with an electronic control module 7 in the electronic digital detonator, and simultaneously converts data signals into direct-current voltage through a rectifier bridge to supply the electronic chip to work, control the capacitor 6 and the ignition capacitor 8 to store energy and the like. And the detonation controller issues detonation instructions/data, the interior of the electronic chip is compared, if the detonation instructions/data pass the comparison, the electronic chip jumps to the next state, and when all the flow operations are completed, the interior of the electronic chip enters a detonation ready state through the comparison of the states of all the stages. The initiation controller opens a high-voltage charging switch to charge high voltage and give an initiation instruction, an electronic chip receives the initiation instruction and opens an enabling switch after set delay time, an external switch is conducted, an ignition capacitor 8 instantly releases stored energy to an ignition element, namely a explosive head 10, current flows through a bridge wire on the explosive head 10, the bridge wire converts electric energy into heat energy to ignite ignition powder on the bridge wire, and flame output of the bridge wire is subjected to the action of a filler 9 and a silk pad 11 blocked at the central part to initiate the initiation powder 14; after the primary explosive 14 explodes, the lining shell 13 detonates the first high explosive 15 and the second high explosive 16 in sequence, and the bottom liner forms energy-gathering jet flow, so that the set explosion output is completed.
Claims (9)
1. An electronic digital detonator helpful for preventing accidental fire and misfire is characterized in that: the explosive-free ignition device comprises a leg wire (1), a sealing plug (2), an enclosure (3), a cover plate (4), an inner sleeve (5), a control capacitor (6), an electronic control module (7), an ignition capacitor (8), an explosive head (10), a silk pad (11), an inner shell (12), a lining shell (13), an initiating explosive (14), a first high explosive (15) and a second high explosive (16) which are coaxially arranged in the enclosure (3), and a filling agent (9) filled around the explosive head (10); wherein the second high explosive (16), the first high explosive (15) and the primary explosive (14) are arranged from bottom to top in sequence; the initiating explosive (14) is filled in the lining shell (13), the lining shell (13) is externally provided with the inner shell (12), the top surface of the inner shell (12) is provided with a central hole, two end surfaces of the silk pad (11) are respectively tightly attached to the inner wall of the top surface of the inner shell (12) and the initiating explosive (14), and the initiating explosive (14) is separated from the central hole of the top surface of the inner shell (12) to restrain the initiating explosive (14); a control capacitor (6), an electronic control module (7), an ignition capacitor (8), a medicine head (10) and a filling agent (9) filled around the medicine head (10) are sequentially arranged in the inner sleeve (5) from top to bottom; the input end of the medicine head (10) is connected with the ignition capacitor (8); a sealing plug (2) is arranged in a vacant position between the top surface of the cover plate (4) and the end surface of the input end of the tube shell (3); the leg wire (1) sequentially passes through the sealing plug (2), the cover plate (4) and the inner sleeve (5) to be connected with the control capacitor (6).
2. An electronic digital detonator as claimed in claim 1 which helps prevent accidental fires and misfires, wherein: the tube shell (3) and the inner sleeve (5) are respectively provided with necking structures at the front part and the rear part of the filling agent (9) along the radial direction, so that the axial positioning is realized, the internal structure is prevented from loosening and moving, particularly, the medicament is prevented from loosening and rubbing, the accidental ignition is further prevented, and the safety is improved.
3. An electronic digital detonator as claimed in claim 1 or 2 which helps prevent accidental fires and misfires, wherein: the tube shell (3) is punched by a copper-aluminum composite material, the outer layer material is copper, the inner layer material is aluminum, and the composite material is used for effectively attenuating external explosion impact, so that accidental ignition and explosion rejection are prevented, and the safety and the reliability are improved.
4. An electronic digital detonator as claimed in claim 1 or 2 which helps prevent accidental fires and misfires, wherein: an inner sleeve (5) made of a non-metal material is located outside the control capacitor (6), the electronic control module (7) and the ignition capacitor (8) and coaxially arranged inside the tube shell (3) to improve the structural strength, buffer and attenuate explosion impact, protect electronic components and explosive heads, prevent accidental ignition and misfire, and improve the safety and the reliability.
5. An electronic digital detonator as claimed in claim 4 which helps prevent accidental fires and misfires, wherein: the non-metallic material is rubber or plastic.
6. An electronic digital detonator as claimed in claim 1 or 2 which helps prevent accidental fires and misfires, wherein: the circumference outer wall and the bottom surface of filler (9) parcel medicine head (10) completely, ignition capacitor (8) are hugged closely to the top surface of medicine head (10) and filler (9), inner shell (12) and silk pad (11) in inner shell (12) are hugged closely to the bottom surface of filler (9), adopt the foaming material that has certain elasticity and intensity but does not influence medicine head (10) reliable ignition initiating explosive (14), be used for supporting the medicine head and retracing initiating explosive, prevent the structural failure, and slow down the impact, prevent unexpected ignition and explosion, improve security and reliability.
7. An electronic digital detonator as claimed in claim 1 which helps prevent accidental fires and misfires, wherein: the cover plate (4) is made of a conductive material, and the bottom surface of the cover plate is tightly attached to the inner sleeve (5) so as to seal the internal structure of the electronic digital detonator and realize electromagnetic shielding, thereby preventing accidental ignition and improving safety and reliability.
8. An electronic digital detonator as claimed in claim 1 which helps prevent accidental fires and misfires, wherein: the sealing plug (2) is made of a conductive non-metal material, so that the electromagnetic shielding effect of the internal structure of the electronic digital detonator is further improved, accidental ignition is prevented, and the safety and the reliability are improved.
9. An electronic digital detonator as claimed in claim 1 which helps prevent accidental fires and misfires, wherein: the inner shell (12) is made of pure aluminum or aluminum alloy, and the lining shell (13) is made of stainless steel; the bottom end of the inner shell (12) is opened, the opening end of the lining shell (13) faces upwards, 3 parts of the lining shell (13), the inner shell (12) and the pipe shell (3) are coaxially assembled together, a container structure reinforcing and extrusion or striking deformation preventing effect can be achieved on the initiating explosive, a composite partition plate can be formed on the side wall, the effect of protecting the initiating explosive (14) and preventing the initiating explosive from being detonated is achieved, and therefore accidental ignition is prevented, and safety is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210993769.2A CN115406315B (en) | 2022-08-18 | 2022-08-18 | Electronic digital detonator for preventing accidental ignition and explosion rejection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210993769.2A CN115406315B (en) | 2022-08-18 | 2022-08-18 | Electronic digital detonator for preventing accidental ignition and explosion rejection |
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| CN115406315B CN115406315B (en) | 2024-02-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB884041A (en) * | 1957-09-27 | 1961-12-06 | John Allan Phillips | Improvements in and relating to detonators for explosives |
| US3096714A (en) * | 1959-10-02 | 1963-07-09 | Ici Ltd | Electric detonators |
| US4311096A (en) * | 1980-05-05 | 1982-01-19 | Atlas Powder Company | Electronic blasting cap |
| CN109780949A (en) * | 2019-03-13 | 2019-05-21 | 山东圣世达化工有限责任公司 | The industrial digital electric detonator and its production method of customization |
| CN109813188A (en) * | 2019-02-02 | 2019-05-28 | 北京凯米迈克科技有限公司 | A kind of safe electronic ignition and detonation part and safe electronic ignition and detonation detonator |
| CN210862407U (en) * | 2019-09-09 | 2020-06-26 | 中国科学技术大学 | Allowable electronic detonator for coal mine |
-
2022
- 2022-08-18 CN CN202210993769.2A patent/CN115406315B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB884041A (en) * | 1957-09-27 | 1961-12-06 | John Allan Phillips | Improvements in and relating to detonators for explosives |
| US3096714A (en) * | 1959-10-02 | 1963-07-09 | Ici Ltd | Electric detonators |
| US4311096A (en) * | 1980-05-05 | 1982-01-19 | Atlas Powder Company | Electronic blasting cap |
| CN109813188A (en) * | 2019-02-02 | 2019-05-28 | 北京凯米迈克科技有限公司 | A kind of safe electronic ignition and detonation part and safe electronic ignition and detonation detonator |
| CN109780949A (en) * | 2019-03-13 | 2019-05-21 | 山东圣世达化工有限责任公司 | The industrial digital electric detonator and its production method of customization |
| CN210862407U (en) * | 2019-09-09 | 2020-06-26 | 中国科学技术大学 | Allowable electronic detonator for coal mine |
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| CN115406315B (en) | 2024-02-13 |
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