CN214470422U

CN214470422U - High-precision detonator

Info

Publication number: CN214470422U
Application number: CN202022890510.4U
Authority: CN
Inventors: 郝绪伟; 关景春; 蒋岳亮; 夏连杰; 邵旭峰
Original assignee: Wuxi Weida Chemical Co ltd
Current assignee: Wuxi Weida Chemical Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-10-22
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a high-precision detonator, which comprises an ignition tube, a delay body and a basic detonator; the delay body is cylindrical and comprises an upper guide area at the upper part, a delay area at the middle part and a lower guide area at the lower part; the outer walls of the upper guide region and the lower guide region are both provided with threads, and the lower end of the ignition tube is connected with the upper guide region through the threads, and the upper end of the basic detonator is connected with the lower guide region through the threads; the upper port of the ignition tube is provided with a sealing plug, the lower part in the ignition tube is provided with an ignition explosive head, the ignition explosive head is connected with a leg wire, the leg wire penetrates through the sealing plug to extend to the outside of the ignition tube, the bottom of the basic detonator is sealed, the split assembly and delay precision are high, and high explosive is arranged in the basic detonator.

Description

High-precision detonator

Technical Field

The utility model relates to a detonator technical field especially relates to a high accuracy detonator.

Background

The existing detonator ignition is that two leg wires of an electric ignition head are connected with a current with certain intensity to ignite a powder head, the powder head is combusted in an internal air chamber to generate flame to ignite a delay body, and then the whole detonator is ignited, however, the flame generated by the electric ignition head is difficult to reliably ignite the delay body along with the increase of the delay section of the delay body, and the phenomenon of misfire is easy to generate; secondly, the method comprises the following steps: the delay powder in the delay body is dense towards the lower side due to the long-term placement and the vibration during transportation, so that a gap is formed at one side of the delay powder, and when the delay powder is ignited later, the fire can extend rapidly along the gap, so that the overall combustion of the delay powder is caused, the delay time is shortened, and the delay accuracy is influenced; thirdly, the method comprises the following steps: in addition, most of the existing detonators are integrated, namely, an ignition powder head, a delay powder, an initiating explosive and a high explosive are sequentially arranged in a pipe, for example, Chinese patent CN202304637U discloses a delay electric detonator which is easy to ignite and has high delay precision, the detonator in the patent is integrated, and safety accidents can be caused by safety problems such as impact, static electricity or friction in the processes of production, transportation and storage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming of prior art, providing a high accuracy detonator that components of a whole that can function independently assembly, delay precision are high.

In order to realize the purpose of the utility model, the technical proposal of the utility model is that:

a high-precision detonator comprises an ignition tube, a delay body and a basic detonator; the delay body is cylindrical and comprises an upper guide area at the upper part, a delay area at the middle part and a lower guide area at the lower part; the outer walls of the upper guide region and the lower guide region are both provided with threads, and the lower end of the ignition tube is connected with the upper guide region through the threads, and the upper end of the basic detonator is connected with the lower guide region through the threads; the ignition tube is characterized in that a sealing plug is arranged at an upper port of the ignition tube, an ignition explosive head is arranged at the lower part in the ignition tube, the ignition explosive head is connected with a leg wire, the leg wire penetrates through the sealing plug to extend to the outside of the ignition tube, the bottom of the basic detonator is sealed, and high explosive is arranged in the basic detonator.

Preferably, the center of the upper guide area is provided with a cylindrical upper cavity, the center of the delay area is provided with a cylindrical cavity, and the center of the lower guide area is provided with a cylindrical lower cavity; the centers of the upper concave cavity, the cavity and the lower concave cavity are coaxial and communicated; ignition powder and transition powder are arranged in the upper concave cavity; a delay powder is arranged in the cavity; and the lower concave cavity is internally provided with an initiating explosive.

Preferably, the diameter of each of the upper and lower cavities is greater than the diameter of the cavity.

Preferably, the inner wall of the cavity is provided with a high-temperature expansion layer.

Preferably, a first moisture-proof piece is arranged at the top of the ignition powder, a second moisture-proof piece is arranged between the transition powder and the delay powder, a third moisture-proof piece is arranged between the initiating powder and the delay powder, and a fourth moisture-proof piece is arranged at the bottom of the initiating powder.

Preferably, sealing rings are arranged at the joints between the ignition tube and the upper guide region and between the basic detonator and the lower guide region, and a sealing glue is coated on the sealing rings.

Preferably, the outer wall of the lower part of the ignition tube is provided with an upper annular groove, the outer wall of the upper part of the basic detonator is provided with a lower annular groove, a rubber protective sleeve is arranged between the upper annular groove and the lower annular groove, the rubber protective sleeve wraps the delay body, the joint of the ignition tube and the upper guide area and the joint of the basic detonator and the lower guide area, the upper end of the rubber protective sleeve is embedded into the upper annular groove, and the lower end of the rubber protective sleeve is embedded into the lower annular groove, so that the rubber protective sleeve can be prevented from moving.

The utility model has the advantages that:

firstly, the method comprises the following steps: the detonator is designed in a split manner, and the ignition tube, the delay element and the basic detonator can be separated, so that the detonator is convenient to separate and transport, and the safety of transportation and storage is ensured;

secondly, the method comprises the following steps: the ignition powder and the transition powder are arranged in the upper concave cavity, and the delay powder is ignited for a continuous time through the ignition powder and the transition powder, so that the ignition of the delay powder is ensured, and the misfire can not occur;

thirdly, the method comprises the following steps: the high-temperature expansion layer is arranged on the inner wall of the cavity, the delay powder expands due to high temperature generated by combustion of the delay powder, a gap between the delay powder and the cavity is blocked, flame in the gap is extinguished, the combustion path of the delay powder cannot be destroyed, the purposes of fixing the delay powder and guiding the combustion trend of the delay powder are achieved, the phenomenon that fire rapidly extends along the gap to cause the integral combustion of the delay powder is avoided, and the delay accuracy of the delay powder is ensured;

fourthly: the ignition tube, the delay body and the basic detonator are connected through threads, a sealing ring is arranged at the joint, and sealant is coated on the sealing ring to prevent moisture so as to ensure sealing;

fifth, the method comprises the following steps: the rubber protective sleeve is arranged, so that the sealing performance is further ensured, and after the detonator is assembled, the shock resistance of the whole detonator can be improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 10 is an ignition tube, 10.1 is an upper ring groove, 11 is a sealing plug, 12 is an ignition charge head, 13 is a leg wire, 20 is a delay body, 21 is an upper guide area, 21.1 is an upper cavity, 21.2 is an ignition charge, 21.3 is a transition charge, 22 is a delay area, 22.1 is a cavity, 22.2 is a delay charge, 22.3 is a high temperature expansion layer, 23 is a lower guide area, 23.1 is a lower cavity, 23.2 is an initiating charge, 30 is a base detonator, 30.1 is a lower ring groove, 31 is a high explosive, 41 is a first moisture-proof sheet, 42 is a second moisture-proof sheet, 43 is a third moisture-proof sheet, 44 is a fourth moisture-proof sheet, and 50 is a rubber protective sleeve.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

A high-precision detonator comprises an ignition tube 10, a delay element 20 and a basic detonator 30; the delay body 20 is cylindrical and comprises an upper guide area 21 at the upper part, a delay area 22 at the middle part and a lower guide area 23 at the lower part; the outer walls of the upper guide region 21 and the lower guide region 23 are both provided with threads, and the lower end of the ignition tube 10 is connected with the upper guide region 21 and the upper end of the basic detonator 30 is connected with the lower guide region 23 through threads; the upper port of the ignition tube 10 is provided with a sealing plug 11, the lower part in the ignition tube 10 is provided with an ignition explosive head 12, the ignition explosive head 12 is connected with a leg wire 13, the leg wire 13 penetrates through the sealing plug 11 to extend to the outside of the ignition tube 10, the bottom of the basic detonator 30 is sealed, and a high explosive 31 is arranged in the basic detonator 30.

Preferably, a cylindrical upper cavity 21.1 is arranged at the center of the upper guide area 21, a cylindrical cavity 22.1 is arranged at the center in the delay area 22, and a cylindrical lower cavity 23.1 is arranged at the center of the lower guide area 23; the centers of the upper concave cavity 21.1, the cavity 22.1 and the lower concave cavity 23.1 are coaxial and communicated; ignition powder 21.2 and transition powder 21.3 are arranged in the upper cavity 21.1; a delay powder 22.2 is arranged in the cavity 22.1; an initiating explosive 23.2 is arranged in the concave cavity 23.1.

The delay powder 22.2 is formed by drawing a metal thin tube and delay powder filled in the metal thin tube, and a plurality of delay filaments can be wound into a bundle (the outer diameter is consistent with the inner diameter of the cavity) or be spiral (the outer diameter is consistent with the inner diameter of the cavity).

The delay powder 22.2 can also be columnar gel-doped delay powder, and the delay powder 22.2 with the corresponding length is cut according to the length of the cavity 22.1.

Preferably, the diameters of the upper concave cavity 21.1 and the lower concave cavity 23.1 are larger than the diameter of the cavity 22.1.

Preferably, the inner wall of the cavity 22.1 is provided with a high-temperature expansion layer 22.3.

Preferably, a first moisture-proof sheet 41 is arranged at the top of the ignition powder 21.2, a second moisture-proof sheet 42 is arranged between the transition powder 21.3 and the delay powder 22.2, a third moisture-proof sheet 43 is arranged between the initiating powder 23.2 and the delay powder 22.2, a fourth moisture-proof sheet 44 is arranged at the bottom of the initiating powder 23.2, and the bottom surface of the fourth moisture-proof sheet 44 is in contact and joint with the high explosive 31.

Preferably, sealing rings (not shown) are disposed at the joints between the squib 10 and the upper guide region 21 and between the base detonator 30 and the lower guide region 23, and a sealant (not shown) is applied.

Preferably, the outer wall of the lower part of the ignition tube 10 is provided with an upper annular groove 10.1, the outer wall of the upper part of the basic detonator 30 is provided with a lower annular groove 30.1, a rubber protective sleeve 50 is arranged between the upper annular groove 10.1 and the lower annular groove 30.1, the rubber protective sleeve 50 wraps the delay body 20, the joint of the ignition tube 10 and the upper guide area 21 and the joint of the basic detonator 30 and the lower guide area 23, the upper end of the rubber protective sleeve 50 is embedded into the upper annular groove 10.1, and the lower end of the rubber protective sleeve 50 is embedded into the lower annular groove 30.1, so that the rubber protective sleeve 50 can be prevented from moving.

The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. A high accuracy detonator which characterized in that: comprises an ignition tube (10), a delay body (20) and a basic detonator (30); the delay body (20) is cylindrical and comprises an upper guide area (21) at the upper part, a delay area (22) at the middle part and a lower guide area (23) at the lower part; the outer walls of the upper guide region (21) and the lower guide region (23) are both provided with threads, and the lower end of the ignition tube (10) is connected with the upper guide region (21) and the upper end of the basic detonator (30) is connected with the lower guide region (23) through threads; the utility model provides a detonator, including ignition tube (10), lower part in ignition tube (10) sets up ignition explosive head (12), ignition explosive head (12) are connected with foot line (13), foot line (13) pass sealing plug (11) and extend ignition tube (10) outside, basic detonator (30) bottom is sealed, set up high explosive (31) in basic detonator (30).

2. A high precision detonator as claimed in claim 1 wherein: a cylindrical upper cavity (21.1) is arranged at the center of the upper guide area (21), a cylindrical cavity (22.1) is arranged at the center in the delay area (22), and a cylindrical lower cavity (23.1) is arranged at the center of the lower guide area (23); the centers of the upper concave cavity (21.1), the cavity (22.1) and the lower concave cavity (23.1) are coaxial and communicated; ignition powder (21.2) and transition powder (21.3) are arranged in the upper cavity (21.1); a delay powder (22.2) is arranged in the cavity (22.1); and an initiating explosive (23.2) is arranged in the lower cavity (23.1).

3. A high precision detonator as claimed in claim 2 wherein: the diameters of the upper concave cavity (21.1) and the lower concave cavity (23.1) are larger than the diameter of the cavity (22.1).

4. A high precision detonator as claimed in claim 2 wherein: and a high-temperature expansion layer (22.3) is arranged on the inner wall of the cavity (22.1).

5. A high precision detonator as claimed in claim 2 wherein: the ignition powder (21.2) top sets up first dampproofing piece (41), sets up second dampproofing piece (42) between transition powder (21.3) and delay powder (22.2), sets up third dampproofing piece (43) between initiating explosive (23.2) and delay powder (22.2), and initiating explosive (23.2) bottom sets up fourth dampproofing piece (44).

6. A high precision detonator as claimed in claim 1 wherein: sealing rings are arranged at the joints between the ignition tube (10) and the upper guide region (21) and between the basic detonator (30) and the lower guide region (23), and sealing glue is coated on the sealing rings.

7. A high precision detonator as claimed in claim 1 wherein: the outer wall of the lower portion of the ignition tube (10) is provided with an upper annular groove (10.1), the outer wall of the upper portion of the basic detonator (30) is provided with a lower annular groove (30.1), a rubber protective sleeve (50) is arranged between the upper annular groove (10.1) and the lower annular groove (30.1), the rubber protective sleeve (50) wraps the connection portion of the delay body (20), the ignition tube (10) and the upper guide area (21) and the connection portion of the basic detonator (30) and the lower guide area (23), the upper end of the rubber protective sleeve (50) is embedded into the upper annular groove (10.1), and the lower end of the rubber protective sleeve is embedded into the lower annular groove (30.1).