Double-step initiating-explosive-free electronic detonator

Abstract

The utility model relates to the technical field of coal mine allowable electronic detonators, and discloses a double-step initiating-explosive-free electronic detonator which comprises a detonator shell and a reinforcing cap, and the detonator shell comprises a first detonator shell, a second detonator shell and a third detonator shell which are integrally connected; the detonator shells of the detonator shell are connected through double steps; the first tube shell is connected with the second tube shell through a first step, and the second tube shell is connected with the third tube shell through a second step; reinforcing caps are arranged in the second tube shell and the third tube shell, and the edges of the reinforcing caps abut against the inner steps of the first step and the second step respectively. The device effectively protects the detonator to work stably under various external conditions, the transmission accuracy of detonation signals is improved, and the safety and efficiency of blasting engineering are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic detonators permitted for use in coal mines, in particular to the technical field of detonator safety, and specifically is a double-step explosive-free electronic detonator. Background Art

[0002] In the existing electronic detonator design, the fixing method of the reinforcing cap is crucial to the stability of the electronic detonator allowed for coal mines. In the prior art, the reinforcing cap is usually fixed at a single point, such as Figure 3 As shown, the outer surface of the detonator shell is flat, and there is a raised platform in the middle and lower part of the detonator shell to maintain the stable installation of the reinforcing cap. This fixing method has many defects:

[0003] Firstly, since the reinforcing cap has a single fixing point, it is easy for the reinforcing cap to loosen or even fall off in the detonator body under the influence of the external environment, such as vibration during transportation, resulting in unsatisfactory explosion effect of the detonator during use, and in severe cases, accidental detonation.

[0004] Secondly, the existing method of fixing the reinforcing cap lacks flexibility and is difficult to adapt to the needs of different working environments. For example, in a complex vibration or temperature change environment, a loosely fixed reinforcing cap is more likely to have problems, thereby affecting the stability and safety of the detonator.

[0005] In addition, the diameter of the upper part of the tube shell cannot meet the requirements of the ignition powder heads of various sizes that have appeared on the market to a certain extent, and cannot be applied to various environments, and needs to be improved.

[0006] The present invention aims to solve these technical problems of traditional detonator design. At the same time, the enlarged diameter of the upper part of the tube shell can adapt to more specifications of ignition heads on the market, thereby realizing the multi-level market. Summary of the invention

[0007] The utility model aims to solve the problem that the existing electronic detonators permitted in coal mines adopt a single fixing method, which, on the one hand, cannot meet the safety requirements of the detonators for the reinforcing caps, and are prone to unsatisfactory explosion effects or even accidental detonation due to loose fixation; on the other hand, the fixing method of the reinforcing caps cannot meet the assembly of ignition powder heads of various sizes, and it is necessary to improve the electronic detonators. The utility model provides a double-step explosive-free electronic detonator.

[0008] The utility model provides a double-step explosive-free electronic detonator, comprising a detonator shell and a reinforcing cap, wherein the detonator shell comprises a first shell, a second shell and a third shell which are integrally connected; the shells of the detonator shell are connected via double steps; the first shell is connected to the second shell via a first step, and the second shell is connected to the third shell via a second step; reinforcing caps are arranged inside the second shell and the third shell, and the edges of the reinforcing caps respectively abut against the inner steps of the first step and the second step.

[0009] During implementation, it includes a detonator shell and a reinforcement cap. The thickness of the detonator shell is 0.6mm, and the bottom of the detonator is flat. At the same time, the increase in the size of the shell increases the wall thickness and weight of the shell, further ensuring the stability of the detonator structure; the detonator shell includes a first shell, a second shell, and a third shell that are integrally connected; the outer diameter of the first shell is 7.2~9.6mm, the outer diameter of the second shell is 8.4~10.8mm, and the outer diameter of the third shell is 9.6~12mm. The differentiated size design not only meets the needs of different types of detonators, but also provides it with a wider range of applicability in practical applications.

[0010] Each shell of the detonator shell is connected by a double step, that is, the detonator shell is provided with two steps along the axial direction, and the diameters of the first shell, the second shell, and the third shell increase in sequence from top to bottom, which effectively improves the structural stability and pressure resistance of the detonator shell; the first shell is connected to the second shell by the first step, and the second shell is connected to the third shell by the second step; the inner step of the first step and the second step is inclined at the same angle as the outer step, and the inclination angle is an acute angle;

[0011] At the first step, the inner diameter of the first tube shell is smaller than the inner diameter of the second tube shell, and the outer diameter of the first tube shell is smaller than the outer diameter of the second tube shell, so that a larger space is formed in the second tube shell of the detonator, reducing the influence of external pressure on the detonator; at the second step, the inner diameter of the second tube shell is smaller than the inner diameter of the third tube shell, and the outer diameter of the second tube shell is smaller than the outer diameter of the third tube shell. The lengths of the first tube shell and the third tube shell are both greater than the length of the second tube shell. The arrangement of the second tube shell strengthens the spatial isolation effect formed by the first tube shell, and at the same time provides more reliable support for the explosives;

[0012] The second tube shell and the third tube shell are both provided with reinforcing caps to enhance the durability and safety of the detonator shell under explosion or other external impact, and the edges of the reinforcing caps respectively abut against the inner steps of the first step and the second step to provide different angles of contact and a larger contact area between the reinforcing cap and the detonator tube shell, thereby improving the stability of the reinforcing cap and being able to better adapt to the needs of different working environments; specifically, the reinforcing caps include eyeless reinforcing caps and eyed reinforcing caps, and the use of different types of reinforcing caps is conducive to improving stability and safety, wherein the eyeless reinforcing cap protects the detonator from external interference, while the eyed reinforcing cap improves the transmission accuracy of the detonation signal; the bottom edge of the eyeless reinforcing cap abuts against the inner step of the first step, and the bottom edge of the eyed reinforcing cap abuts against the inner step of the second step, providing a more flexible choice for detonators for different purposes.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a double-step explosive-free electronic detonator, which changes the structure of the detonator shell and the reinforcing cap so that the reinforcing cap is protected from external interference and can be stably fixed, effectively protecting the detonator to maintain stable operation under various external conditions and providing a more reliable detonation system; and the design of the double reinforcing cap can improve the transmission accuracy of the detonation signal, provide better support for the explosive, ensure that the explosion can proceed as expected, effectively improve the stability and safety in a complex working environment, and reduce the risk of accidental detonation, thereby improving the safety and efficiency of the blasting project, and improving the efficiency and reliability of the blasting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional schematic diagram of the utility model.

[0017] Figure 3 It is a schematic diagram of the detonator structure in the prior art.

[0018] The following are marked in the figure:

[0019] 1-first tube shell, 2-second tube shell, 3-third tube shell, 4-eyeless reinforcement cap, 5-eye reinforcement cap, 6-first step, 7-second step. DETAILED DESCRIPTION

[0020] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0021] A double-step explosive-free electronic detonator, such as Figure 1~2As shown: when implemented, it includes a detonator shell and a reinforcement cap. The thickness of the detonator shell is 0.6mm, and the bottom of the detonator is flat. At the same time, the increase in the size of the shell increases the wall thickness and weight of the shell, further ensuring the stability of the detonator structure; the detonator shell includes a first shell 1, a second shell 2, and a third shell 3 that are integrally connected; the outer diameter of the first shell 1 is 7.2~9.6mm, and the length is 22.1mm, the outer diameter of the second shell 2 is 8.4~10.8mm, and the length is 6mm, the outer diameter of the third shell 3 is 9.6~12mm, and the length is 61mm. The differentiated design of the size not only meets the needs of different types of detonators, but also provides it with a wider range of applicability in practical applications.

[0022] Each shell of the detonator shell is connected by a double step, that is, the detonator shell is provided with two steps along the axial direction, and the diameters of the first shell 1, the second shell 2, and the third shell 3 increase in sequence from top to bottom, which effectively improves the structural stability and pressure resistance of the detonator shell; the first shell 1 is connected to the second shell 2 by a first step 6, and the second shell 2 is connected to the third shell 3 by a second step 7; the inner step of the first step 6 and the outer step of the second step 7 are inclined at the same angle, and the inclination angle is an acute angle;

[0023] At the first step 6, the inner diameter of the first tube shell 1 is smaller than the inner diameter of the second tube shell 2, and the outer diameter of the first tube shell 1 is smaller than the outer diameter of the second tube shell 2, so that a larger space is formed in the second tube shell 2 of the detonator, reducing the influence of external pressure on the detonator; at the second step 7, the inner diameter of the second tube shell 2 is smaller than the inner diameter of the third tube shell 3, and the outer diameter of the second tube shell 2 is smaller than the outer diameter of the third tube shell 3. The lengths of the first tube shell 1 and the third tube shell 3 are both greater than the length of the second tube shell 2. The arrangement of the second tube shell 2 strengthens the spatial isolation effect formed by the first tube shell 1, and at the same time provides more reliable support for the explosives;

[0024] The second tube shell 2 and the third tube shell 3 are both provided with reinforcing caps to enhance the durability and safety of the detonator shell under explosion or other external impacts. The edges of the reinforcing caps respectively abut against the inner steps of the first step 6 and the second step 7 to provide different angles of contact and a larger contact area between the reinforcing cap and the detonator tube shell, thereby improving the stability of the reinforcing cap and being able to better adapt to the needs of different working environments. Specifically, the reinforcing caps include eyeless reinforcing caps 4 and eyed reinforcing caps 5. The use of different types of reinforcing caps is conducive to improving stability and safety. The eyeless reinforcing cap 4 protects the detonator from external interference, while the eyed reinforcing cap 5 improves the transmission accuracy of the detonation signal. The bottom edge of the eyeless reinforcing cap 4 abuts against the inner step of the first step 6, and the bottom edge of the eyed reinforcing cap 5 abuts against the inner step of the second step 7, providing a more flexible choice for detonators for different purposes.

[0025] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-step explosive-free electronic detonator, comprising a detonator shell and a reinforcing cap, characterized in that: The detonator shell comprises a first shell (1), a second shell (2), and a third shell (3) which are integrally connected; The shells of the detonator shells are connected via double steps; the first shell (1) is connected to the second shell (2) via a first step (6), and the second shell (2) is connected to the third shell (3) via a second step (7); The second tube shell (2) and the third tube shell (3) are each provided with a reinforcing cap, the edges of the reinforcing cap respectively abutting against the inner steps of the first step (6) and the second step (7).

2. A double-step explosive-free electronic detonator according to claim 1, characterized in that: The reinforcing cap comprises an eyeless reinforcing cap (4) and an eyed reinforcing cap (5), wherein the bottom edge of the eyeless reinforcing cap (4) abuts against the inner step of the first step (6), and the bottom edge of the eyed reinforcing cap (5) abuts against the inner step of the second step (7).

3. The double-step explosive-free electronic detonator according to claim 1, characterized in that: The inner steps and outer steps of the first step (6) and the second step (7) are inclined at the same angle, and the inclination angle is an acute angle.

4. The double-step explosive-free electronic detonator according to claim 1, characterized in that: At the first step (6), the inner diameter of the first tube shell (1) is smaller than the inner diameter of the second tube shell (2), and the outer diameter of the first tube shell (1) is smaller than the outer diameter of the second tube shell (2); at the second step (7), the inner diameter of the second tube shell (2) is smaller than the inner diameter of the third tube shell (3), and the outer diameter of the second tube shell (2) is smaller than the outer diameter of the third tube shell (3).

5. A double-step explosive-free electronic detonator according to claim 4, characterized in that: The outer diameter of the first tube shell (1) is 7.2-9.6 mm, the outer diameter of the second tube shell (2) is 8.4-10.8 mm, and the outer diameter of the third tube shell (3) is 9.6-12 mm.

6. A double-step explosive-free electronic detonator according to claim 1, characterized in that: The thickness of the detonator shell is 0.6 mm.

7. The double-step explosive-free electronic detonator according to claim 1, characterized in that: The lengths of the first tube shell (1) and the third tube shell (3) are both greater than the length of the second tube shell (2).

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