CN213631831U

CN213631831U - Novel electronic detonator ignition part structure

Info

Publication number: CN213631831U
Application number: CN202021982513.4U
Authority: CN
Inventors: 银庆宇; 谭津; 吴奎
Original assignee: Guizhou Qaml Of Science And Technology Co ltd
Current assignee: Guizhou Qaml Of Science And Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-07-06
Anticipated expiration: 2030-09-11

Abstract

The invention belongs to the field of civil explosion, and particularly relates to a novel electronic detonator ignition part structure, wherein an explosion foil JP1 is a cylindrical insulating plate 80, a conductive layer 70 is laid on the cylindrical end face, the conductive layer 70 is divided into an area A10, an area B20, an area C30, an area A10, an area B20 and an area C30 by a dividing groove, three areas of the area A11, an area B21 and an area C31 are respectively provided with a lead wire, and one end, close to the center of a circle, of the dividing groove between the area A10 and the area B20 is conducted through an explosion bridge foil D40. According to the invention, the structure of the ignition part is improved, so that the energy of the energy storage capacitor of the whole control module of the electronic detonator is completely released, the design difficulty of an external circuit is reduced, and the cost of the control module is reduced.

Description

Novel electronic detonator ignition part structure

Technical Field

The invention belongs to the field of civil explosion, and particularly relates to a novel electronic detonator ignition piece structure.

Background

The base powder is the core charge in the existing industrial detonator and generally adopts DDNP dinitrodiazophenol initiating explosive which has higher touch and scratch friction sensitivity and is exploded when meeting fire. The ignition powder is wrapped on the ignition bridge wire, so that the ignition powder is vibrated to be broken and separated from the bridge wire in production and transportation, and the electronic detonator is prevented from being detonated. Because the electronic detonator has complex and variable use environment, in the process of detonation, the detonators detonated at the earlier stage can generate strong interference signals, generate very high superposed voltage and strong vibration waves, easily bring mechanical damage to the electronic detonator, and the ignition powder and the ignition bridge wire are damaged to cause the electronic detonator to fail to explode.

In addition, the sensitivity of the medicament is high, and the chemical property is unstable, so that the explosion safety accidents are very easy to happen in the daily production, transportation, storage and use processes of the existing industrial electric detonator and the existing digital electric detonator.

The electronic detonator is easy to have the above problems due to the ignition piece of the electronic detonator consisting of the traditional ignition powder and the ignition bridge wire. Therefore, the research on the electronic detonator which is initiated by the energy accumulation of the high-pressure plasma igniter is carried out, and particularly, when high-voltage current passes through a metal wire or an exploding foil, the metal wire or the exploding foil can be rapidly melted and vaporized, and can be diffused to a surrounding medium, plasma is generated, shock waves are formed, and basic explosive in the electronic detonator is detonated by the shock waves. Although the method solves the problem that the ignition bridge wire and the ignition powder of the traditional electronic detonator are easy to fall off and vibrate, the method also has new problems, has high requirements on components of a control module and a circuit, has large energy storage capacitance and increases the manufacturing cost of the electronic detonator. Meanwhile, the performance of components is improved, so that the volume of the whole control module is increased, the problem that the control module and a basic tube shell are assembled by an electronic detonator is also caused, and the control module cannot be arranged in the basic tube shell, so that the mechanical performance of the whole electronic detonator structure is reduced, the electronic detonator structure is extremely easy to deform in a complex blasting field, and the electronic detonator is prevented from being detonated due to the damage of a control module circuit.

Disclosure of Invention

The invention provides a novel electronic detonator ignition part structure, which replaces the traditional ignition part consisting of an ignition bridge wire and ignition powder, and reduces the high requirements of the high-voltage plasma igniter energy-gathering and initiation electronic detonator circuit on components. The method is realized by the following technical scheme:

a novel electronic detonator ignition part structure is characterized in that an ignition part is an explosion foil JP1, an explosion foil JP1 is a cylindrical insulating plate 80, a conductive layer 70 is laid on a cylindrical end face, the conductive layer 70 is divided into an area A10, an area B20, an area C30, an area A10, an area B20 and an area C30 by dividing grooves, three areas of the area A11, the area B21 and the area C31 are respectively provided with a lead wire, and one end, close to the center of a circle, of the dividing groove between the area A10 and the area B20 is conducted through an explosion bridge foil D40.

The three pins are arranged on the ignition piece explosion foil JP1, when a discharge circuit control chip in an electronic detonator control module conducts a switch in a circuit, an energy storage capacitor of the control module is enabled to be conducted with a A, B pin and the switch of the explosion foil JP1, and the energy storage capacitor C discharges to an explosion bridge foil D40 for the first time, so that the explosion bridge foil D40 is melted and vaporized to form a plasma flow. After the capacitor C is discharged for the first time, energy is not released, at the moment, the A, C pin of the exploding foil JP1 is conducted by ion current, the current of the capacitor C1 passes through the A pin of the exploding foil JP1, the plasma current and the C pin of the exploding foil JP1, the plasma current is further energized and accelerated, stronger shock waves are formed, and the explosive is detonated.

Further, in order to ensure the stable connection of the wire with the exploding foil JP1 and prevent the electronic detonator from being refused to explode due to the disconnection of the contact point in the processing process, the wire connecting pin a11, the pin B21 and the pin C31 which are respectively arranged on the area a 10, the area B20 and the area C30 are round holes, and the inner walls of the round holes are made of metal, so that the wire can be inserted into the holes to ensure the connection reliability. In order to further ensure the reliability of the connection, the circular hole is a through hole penetrating the cylindrical insulating plate 70.

Further, a conductive seat a12 and a conductive seat C32 are respectively arranged on the area a 10 and the area C30, the insulating layer 50 covers the conductive seat a12 and the conductive seat C32 to form a closed space 60, the explosion bridge foil D40 is wrapped in the closed space 60, and the concentration of plasma current obtained by melting and vaporizing the explosion bridge foil D by first discharge of the capacitor C1 can be increased, so that the insulating layer is laid on the explosion foil JP1, and the plasma current increases the concentration of the plasma current under the constraint of the insulating barrier layer. After the capacitor C1 discharges for the second time, the pressurized and energized plasma flow is more, and stronger shock waves are formed.

Further, the width of the closed space 60 is the same as the width of the explosion bridge foil D40.

Further, the width of the bottom surface of the closed space 60 is consistent with the width of the explosion bridge foil D40, and the closed space is in a trapezoid shape gradually closing from bottom to top. When the capacitor C1 discharges for the first time, a partial state with low concentration of bottom ions and high concentration of top ions is formed on the plasma jet enclosed space 50 obtained by melting and vaporizing the explosion bridge foil D, the A, C pins of the explosion foil JP1 can be quickly conducted to further energize the plasma flow, and a larger high-speed plasma flow is formed.

Has the advantages that: the condition of whether the explosive can explode is to see the energy given to the explosive by the exploding foil, the energy obtained by the exploding foil is determined by the electric energy input by the capacitor, part of the energy of the capacitor is consumed in an external circuit, and the exploding foil with low resistance and low resistivity can improve the current density of the exploding foil. This is why the resistance and inductance of the external circuit are required to be sufficiently small, and therefore, attention is paid to the design of the external circuit, and the resistance and inductance of the external circuit should be made as small as possible. In the whole discharging circuit, the selection of the switch is very critical, the circuit needs to have enough small resistance and inductance during design, the requirement on the material is higher, the production and manufacturing cost of the whole electronic detonator is increased, and the popularization difficulty of the electronic detonator is increased.

The invention provides a novel ignition part structure of an electronic detonator, which is an improvement on an exploding foil JP1 in a discharge circuit, wherein a capacitor C discharges for the first time to ensure that a plasma flow obtained by melting and vaporizing an exploding bridge foil D has conductive performance, and the energy of the capacitor C is not completely released. Therefore, a pin is added on the exploding foil JP1, the capacitor C1 is conducted with the newly added pin of the exploding foil by utilizing the plasma current conductivity, the plasma current is further energized to form larger shock waves, and the explosive can be rapidly detonated to generate detonation under the action of high-temperature plasma.

And the structure of the exploding foil JP1 is further designed, and the A, B, C pin of the exploding foil JP1 is arranged into a through hole, so that the reliability of connection between the electronic detonator control module and the exploding foil JP1 is ensured, and the frequency of the electronic detonator refusing to explode is structurally reduced. In order to increase the ion concentration formed by the first vaporization of the capacitor C1, the A, C pin of the exploding foil JP1 can be quickly conducted, the A, C pin of the exploding foil JP1 is provided with a conductive seat A and a conductive seat C, and the conductive seat A and the conductive seat C are covered by the insulating layer 40 to form a closed space which restrains the escape direction of plasma flow, so that the plasma flow can only escape to a single direction and is converged into larger energy.

Drawings

FIG. 1 is a top view of an exploding foil JP 1;

FIG. 2 is a front view of an exploding foil JP 1;

fig. 3 left side view of exploding foil JP 1;

FIG. 4 is a cross-sectional view of an exploding foil JP1A-A

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, respectively:

as shown in fig. 1-4, a novel electronic detonator ignition part structure, the ignition part is an explosion foil, the explosion foil JP1 is a cylindrical insulating plate 80, a conductive layer 70 is laid on the cylindrical end surface, the conductive layer 70 is divided into an area a 10, an area B20, an area C30, an area a 10, an area B20 and an area C30 by a dividing groove, and three areas of the area a 10, the area B20 and the area C30 are respectively provided with a lead connecting pin a11, a pin B21 and a pin C31, wherein one end of the dividing groove between the area a 10 and the area B20, which is close to the center of a circle, is conducted through an explosion bridge foil D40.

Further, the lead connection pins a11, B21 and C31 respectively disposed on the a region 10, the B region 20 and the C region 30 are through holes.

Further, a conductive seat a12 and a conductive seat C32 are respectively disposed on the area a 10 and the area C30, the insulating layer 50 covers the conductive seat a12 and the conductive seat C32 to form a sealed space 60, and the explosion bridge foil D40 is wrapped in the sealed space 60.

Further, the width of the bottom surface of the closed space 60 is consistent with the width of the explosion bridge foil D40, and the closed space is in a trapezoid shape gradually closing from bottom to top.

The present invention is not limited to the embodiments described in the detailed description, and those skilled in the art can obtain other embodiments according to the technical solution of the present invention, which also belongs to the technical innovation scope of the present invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the technical scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a novel electronic detonator ignition structure, characterized in that, the ignition be exploding paper tinsel JP1, be cylindric insulating board (80), lay conducting layer (70) on cylindric terminal surface, use the cut apart groove to cut apart conducting layer (70) A region (10), B region (20), C region (30), A region (10), B region (20), be provided with wire connection pin A (11) on the three region of C region (30) respectively, pin B (21) and pin C (31), wherein the one end that the separating groove between A region (10) and B region (20) is close to the centre of a circle switches on through exploding bridge paper tinsel D (40).

2. The novel electronic detonator ignition member structure according to claim 1, wherein the wire connecting pin A (11), the wire connecting pin B (21) and the wire connecting pin C (31) respectively arranged on the area A (10), the area B (20) and the area C (30) are round holes, and the inner wall of each round hole is made of metal.

3. The novel electronic detonator ignition member structure according to claim 1, wherein the conductive seat a (12) and the conductive seat C (32) are respectively disposed on the region a (10) and the region C (30), the insulating layer (50) covers the conductive seat a (12) and the conductive seat C (32) to form a closed space (60), and the explosion bridge foil D (40) is wrapped in the closed space (60).

4. A novel electronic detonator ignition member structure as claimed in claim 3 wherein said enclosed space (60) has a width corresponding to the width of the exploding bridge foil D (40).

5. The novel electronic detonator ignition member structure according to claim 3, wherein the bottom surface width of the closed space (60) is consistent with the width of the explosion bridge foil D (40) and is in a trapezoid shape gradually closing from bottom to top.