CN211120874U

CN211120874U - Novel reinforcing cap with energy gathering holes for detonator

Info

Publication number: CN211120874U
Application number: CN201921934420.1U
Authority: CN
Inventors: 柳鹏辉; 段耀奎
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-28
Anticipated expiration: 2029-11-11

Abstract

The utility model relates to a novel area gathers can detonator of cave with strengthening the cap, including strengthening cap main part, cap, gathering can the cave and pass the fire hole. The whole reinforcing cap is formed by injection molding of high-density polyethylene, and the friction between the reinforcing cap and a detonator shell can be effectively avoided to detonate primary explosive. The bottom of the reinforcing cap is provided with a conical energy-gathering hole, so that the explosive energy of the reinforcing explosive can be concentrated by effectively utilizing the energy-gathering principle of the explosive. Not only ensures that the initiating explosive reliably initiates the reinforcing explosive, but also greatly reduces the using amount of the initiating explosive, and ensures that the detonator is safer to manufacture.

Description

Novel reinforcing cap with energy gathering holes for detonator

Technical Field

The invention belongs to the technical field of blasting, and particularly relates to an improved plastic reinforced cap for a detonator.

Background

In the manufacture and use of industrial detonators, in order to prevent the relatively sensitive primary explosive from being crushed and causing a sudden explosion, a U-shaped metal cap, commonly referred to as a detonator reinforcing cap, is usually placed between the primary explosive and the detonator shell.

The detonator reinforced cap is a small metal cover with a small hole in the center, and is usually made by copper sheet punching; the reinforcing cap has the following functions: the exposed area of the positive initiating explosive is reduced, and the safety of the detonator is improved; a closed small chamber is formed in the detonator, so that the explosion pressure of the positive initiating explosive is increased, the initiation capability of the detonator is improved, and the detonator can be protected from moisture.

When the traditional metal detonator is manufactured, the reinforcing cap is pressed into a tube shell after primary explosive is filled, and the operation is finished in a narrow space; the reinforcing cap is high in hardness, and easily generates friction with a tube shell when the reinforcing cap is pressurized, so that sensitive initiating explosive is detonated due to overhigh temperature; in order to ensure reliable initiation of the reinforcing explosive, enough initiating explosive must be filled in the tube shell, and the use amount of the initiating explosive is large, so that the danger of the production process is increased.

SUMMERY OF THE UTILITY MODEL

Based on the defects, the invention provides a plastic detonator reinforced cap with energy-gathering holes; the problems that in order to ensure reliable initiation, the existing detonator uses a large amount of initiating explosive in the reinforcing cap, has high detonator hardness, and has high danger in the filling process are solved.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a novel area gathers detonator of cave and uses and strengthen cap which characterized by: the reinforcing cap for the detonator is divided into a reinforcing cap main body and a cap cover, and the thickness of the reinforcing cap is 0.8 mm; the whole reinforcing cap is made of plastic materials, so that the primary explosive can be effectively prevented from being ignited by friction with the detonator shell; the bottom of the reinforcing cap is provided with a conical energy-gathering hole, so that the energy-gathering principle can be effectively utilized, and the dosage of the primary explosive in the detonator can be greatly reduced.

A novel detonator reinforced cap with energy gathering holes is characterized in that the reinforced cap is integrally made of plastic materials and is divided into a reinforced cap main body and a cap cover; the bottom of the strengthening cap is provided with a conical energy gathering hole, and the top of the strengthening cap is provided with a fire transfer hole.

Preferably, the detonator reinforced cap is injection molded from high density polyethylene and has a thickness of 0.8 mm.

Preferably, the bottom of the detonator reinforced cap is provided with a conical energy gathering hole, the thickness of the conical energy gathering hole is 0.3mm, and the thickness of the conical energy gathering hole is smaller than that of other parts.

Preferably, the reinforcing cap has a cylindrical fire-transfer hole with a diameter of 2mm in the center.

Preferably, the cap and the reinforcing cap body are pressed into place by plastic threads, sealing tightly.

The invention has the following advantages: the whole reinforcing cap is formed by injection molding of high-density polyethylene, has enough strength, and effectively avoids the friction with the detonator shell to detonate the primary explosive; the conical energy-gathering point at the bottom of the reinforcing cap effectively utilizes the energy-gathering principle to concentrate the explosive energy of the reinforcing agent; the detonator has the advantages that the sufficient initiation capacity can be guaranteed, the bottom of the reinforcing cap which needs to be filled with the initiating explosive is replaced by the energy-gathering cavity, the explosive quantity of the initiating explosive in the detonator is greatly reduced, and the manufacturing safety of the detonator is improved.

Drawings

FIG. 1 is a schematic view of a detonator reinforcement cap structure

FIG. 2 is a schematic diagram of the structure of the detonator assembled by the utility model

In the figure, a reinforced cap body 1, a reinforced cap top cover 2, a bottom conical cavity 3 and a fire transfer hole 4

Detailed Description

For further description of the present invention, the following description will further illustrate the embodiments of the present invention with reference to the accompanying drawings.

The utility model discloses a strengthen cap have intensity height, plasticity good, mill's processing is simple, size precision is high.

And (3) filling the initiating explosive into the reinforcing cap main body, properly compressing, pressing the reinforcing cap onto the reinforcing cap main body, and sealing the reinforcing cap.

The detonator is sequentially filled with positive initiating explosive, the reinforcing cap and the initiating explosive inside the reinforcing cap are put into the tube shell as a whole and pressed into a preset position.

Claims

1. The utility model provides a novel area gathers detonator of cave and uses and strengthen cap which characterized by: the reinforcing cap for the detonator is divided into a reinforcing cap main body and a cap cover, and the thickness of the reinforcing cap is 0.8 mm; the whole reinforcing cap is made of plastic materials, so that the primary explosive can be effectively prevented from being ignited by friction with the detonator shell; the bottom of the reinforcing cap is provided with a conical energy-gathering hole, so that the energy-gathering principle can be effectively utilized, and the dosage of the primary explosive in the detonator can be greatly reduced.

2. A novel reinforcing cap for detonators having shaped cavities as claimed in claim 1 in which the reinforcing cap body is pressed into place between the cap body and the reinforcing cap by means of plastic threads on the rim to provide a good sealing of the reinforcing cap.

3. A novel reinforcing cap for detonators having shaped cavities as claimed in claim 1, wherein the bottom of the reinforcing cap has a conical shaped cavity with a thickness of 0.3mm less than the thickness of the other parts.

4. A novel reinforcing cap for detonators with shaped cavities according to claim 1, wherein the cap has a cylindrical fire-transfer hole of 2mm diameter in the centre.