CN112815793A

CN112815793A - Digital electronic detonator explosive head and production method thereof

Info

Publication number: CN112815793A
Application number: CN202110216096.5A
Authority: CN
Inventors: 毕志雄; 李雪交; 吴勇; 代弦德; 荣凯; 胡昱
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-05-18
Anticipated expiration: 2041-02-26
Also published as: CN112815793B

Abstract

The invention discloses a digital electronic detonator explosive head and a production method thereof. The powder injection device is used for injecting ignition powder into the hose, and the hose can be connected with the powder outlet and is used for storing the ignition powder. The hose is connected with a built-in chip of the digital electronic detonator after being cut into sections, and is used for reducing the impact pressure on the ignition explosive head and protecting the shape of the ignition explosive head. The chip can provide restraint when being inserted, ensures that the ignition powder does not spread to the periphery, and restrains the flame direction generated by the ignition powder after ignition. The invention effectively reduces air gaps and small bubbles, so that the bridge wire can effectively ignite ignition powder by ignition, thereby avoiding defects. Compared with the traditional water drop-shaped explosive head, the hose can restrict the flame direction, and the effect of detonating the basic detonator is better realized. Compared with the traditional explosive head, the explosive head ignition quantity is more accurately controlled, so that the second quantity of the detonator is more accurate. The hose does not need to be removed, and the hose is detonated and destroyed together with the digital electronic detonator, so that the operation steps are fewer, and the production cost is reduced.

Description

Digital electronic detonator explosive head and production method thereof

Technical Field

The invention relates to the technical field of digital electronic detonators, in particular to a digital electronic detonator explosive head and a production method thereof.

Background

The digital electronic detonator is an electronic detonator which controls the detonation process of the detonator by using an electronic control module. The electronic control module is placed on a built-in chip of the digital electronic detonator, and functions of self performance detection, detonation delay time control, ignition energy control, detection of an identity information code inside the detonator and the like are performed on the electronic control module through external detonation equipment, so that the circuit module for communicating the detonator with the external control equipment and controlling detonation is realized. In the process of controlling the detonation of the digital electronic detonator by the external detonation equipment, the electronic control module is firstly detected by the external equipment, and the internal identity information code and the detonation password are determined to be correct. After the detection is correct, the device charges a chip capacitor on a built-in chip of the digital electronic detonator, the capacitor discharges to ignite an electric bridge wire at the front part of the chip, and further ignites an ignition explosive head contacted with the chip, so that the detonation control of the detonator is realized. The digital electronic detonator has the advantages of a detonating network capable of being checked by instruments, high delay accuracy, detectable detonator information, controllable detonating time and the like due to the electronic control module of the digital electronic detonator.

After the chip in the detonator is dipped with ignition powder and dried, a water-drop ignition powder head is formed at the head of the chip. Then the chip forming the ignition powder head is transported to different places, processes such as coating moisture-proof paint, welding leg wires, bayonet base detonators and the like are carried out, and finally the finished product detonators are obtained through three-code binding. When the ignition powder is dipped, gaps or small bubbles may exist at the contact point of the ignition powder and the bridge wire on the chip; meanwhile, the ignition explosive head is broken due to factors such as transportation in processes such as welding leg wires and the like, and the factors cause the ignition explosive head to generate defects. The size of the built-in chip of the detonator is not suitable to be overlarge due to the size limitation of the basic detonator. There is a corresponding limit to the size of the on-chip capacitor, and only thin bridge wires that are relatively easy to ignite can be used. When the ignition powder head with defects is encountered, the energy released by the thin bridge wire is limited, and the ignition powder cannot be effectively ignited. The circuit detection of the digital electronic detonator containing the defective powder head is still normal, and the internal condition is not easy to observe by naked eyes, so that the digital electronic detonator cannot be easily detected in production. However, when it is used on site, it will not normally initiate explosive, resulting in engineering errors such as "blind blasting", etc., and causing huge economic loss.

Aiming at some technical problems in the production of the ignition powder head of the existing digital electronic detonator, part of manufacturers sleeve the ignition powder head into a silica gel sleeve after coating moisture-proof paint in the production of the digital electronic detonator, and then remove the ignition powder head when clamping a base detonator. The method can effectively avoid the ignition explosive head from being broken in the production process, but increases the production steps, and can still not avoid bubbles or gaps between the ignition explosive head and the bridge wire in the dipping process. The existing patent documents provide some solutions, for example, chinese patent with application number 201020652696.3 discloses an electric detonator powder brushing machine, which selects automatic mechanical equipment to brush powder for detonator powder, so as to improve the consistency of product quality, high safety and high automation degree. And has strong applicability and little change to the existing production mode and production process. The scheme is beneficial to improving the quality of the ignition explosive head, but the problem that the digital electronic detonator chip possibly generates a defective explosive head in the explosive dipping process is still to be improved, and meanwhile, the protection scheme of the ignition explosive head in production is not mentioned.

Along with the improvement of the reliability requirement of the digital electronic detonator, the reliability requirement of the ignition powder head of the digital detonator is increased. The problems that an air gap or small bubbles exist between the bridge wire and the ignition powder, the powder head is broken due to factors such as transportation and the like, which are possibly caused by the existing powder dipping mode, are to be better solved. Therefore, a novel digital electronic detonator explosive head and a production method thereof are urgently needed to be developed to effectively solve the problem that the ignition explosive head of the digital electronic detonator has possible defects.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the digital electronic detonator explosive head and the production method thereof, which can provide a protective layer for the igniter explosive head, improve the ignition capability of the igniter explosive head to the basic detonator, improve the delay precision and solve the problems of air gaps or small bubbles between the electric bridge wire and the igniter explosive generated by the conventional igniter explosive head in the ignition process while improving the contact performance of the igniter explosive and the electric bridge wire. Meanwhile, the powder head caused by factors such as transportation and the like is reduced from being broken, the quality problem of detonator products caused by ignition of the powder head is reduced, and the defects of the prior art can be effectively overcome.

The technical problem to be solved by the invention is realized by adopting the following technical scheme.

A digital electronic detonator explosive head and a production method thereof comprise an explosive injection device and a hose. The powder injection device comprises a main body part and a press plug and is used for injecting ignition powder into the hose. The main body part is provided with a press plug inlet, a charging chamber and an ignition powder outlet. The pressing plug inlet is correspondingly connected with the pressing plug and is used for providing an inlet for the pressing plug to enter the main body part, so that the pressing plug provides pressure for ignition powder in the powder charging chamber. The upper part of the charging chamber is provided with a press plug inlet, the lower part of the charging chamber is connected with an ignition powder outlet, and the charging chamber is provided with a larger cavity for temporarily storing the ignition powder. The ignition powder outlet is provided with a smaller caliber and is used for discharging the ignition powder in the powder charging chamber. The pressing plug is connected with the upper part of the main body part and can reciprocate in the powder charging chamber to provide pressure for ignition powder in the powder charging chamber to flow out.

The hose can be connected with a gunpowder outlet and used for storing ignition powder. After the hose is cut into sections, the hose can deform under pressure to be connected with a built-in chip of the digital electronic detonator, and the hose is used for reducing impact pressure on the ignition explosive head and restraining the ignition explosive head to be formed. The chip can provide restraint when being inserted, ensures that the ignition powder does not spread to the periphery, and restrains the flame direction generated by the ignition powder after ignition.

When in use, the ignition powder is placed in the powder charging chamber of the main body part. The amount of pressure provided by the press plug is determined by the requirements of the nature of the ignition charge formulation. According to the working requirement, the acquisition mode of the plug pressing power is determined, and manpower, electric energy and other forms of energy can be selected. And selecting the inner diameter of the hose according to the size of the chip in the digital electronic detonator. Under the pressure provided by the press plug, the ignition powder temporarily stored in the powder charging chamber is pressed out from the ignition powder outlet and enters the hose. Then the hose is cut to a proper length according to the formula of the ignition powder, the required quantity of the ignition powder and other conditions. And inserting the built-in chip of the digital electronic detonator from the top of the cut hose until the electric bridge wire on the chip is close to the bottom of the hose.

Compared with the prior art, the ignition powder in the hose is more effectively attached to the bridge wire because the ignition powder is restrained by the wall of the hose when entering the hose from the ignition powder outlet, so that the forming probability of gaps and small bubbles is effectively reduced. Meanwhile, when the bridge wire on the built-in chip of the digital electronic detonator is inserted into the hose, the bridge wire can be fully contacted with ignition powder, so that air gaps and small bubbles can be more effectively reduced, the bridge wire can more effectively ignite the ignition powder when being ignited, and the generation of a defective ignition powder head is avoided. Meanwhile, the electric bridge wire is ignited from the bottom of the hose, and the flame propagation direction is propagated towards the primary explosive under the constraint provided by the hose, so that the primary explosive in the basic detonator is well detonated. Compared with the traditional water drop-shaped explosive head, the hose can restrict the flame direction, and plays a better role in igniting the primary explosive in the basic detonator. Meanwhile, the ignition powder charging amount can be adjusted by changing the cut scale of the hose, so that the ignition powder charging amount can be more accurately controlled compared with the traditional powder head, and the second amount of the digital electronic detonator is more accurate. The hose does not need to be removed, and the hose is detonated and destroyed together with the digital electronic detonator, so that the operation steps are fewer, and the production cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a finished medicine head product of the present invention;

FIG. 2 is a schematic view of the structure of the drug injection device of the present invention;

FIG. 3 is a cross-sectional view of the structure of the drug injection device of the present invention;

FIG. 4 is a schematic view of the hose of the present invention for dispensing medication;

FIG. 5 is a cross-sectional view of the hose of the present invention for dispensing medication;

FIG. 6 is a schematic view of the hose cut of the present invention;

fig. 7 is a schematic diagram of a hose for inserting a chip in the digital detonator according to the present invention.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments and the drawings.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a digital electronic detonator explosive head and a production method thereof comprise an explosive injection device 1 and a hose 2. The powder injection device comprises a main body part 11 and a press plug 12, and is used for injecting ignition powder into the hose 2. The main body 11 is provided with a plug inlet 111, a charge chamber 112 and an ignition charge outlet 113. The plug inlet 111 is correspondingly connected with the plug 12 and is used for providing an inlet for the plug 12 to enter the main body part 11, so that the plug 12 provides pressure for ignition powder in the charging chamber 112. The upper part of the charging chamber 112 is provided with a press plug inlet 111 and a lower connecting point gunpowder outlet 113, and the charging chamber is provided with a larger cavity for temporarily storing ignition powder. The ignition charge outlet 113 has a relatively small diameter for discharging the ignition charge in the charging chamber 112. The press plug 12 is connected to the upper portion of the main body 11 and is capable of reciprocating in the charging chamber 112 for providing pressure to the ignition charge in the charging chamber 112 to flow out from the ignition charge outlet 113.

As shown in fig. 1, 4, 5, 6 and 7, the hose 2 may be connected to an ignition charge outlet 113 for storing ignition charge. The hose 2 can be deformed under pressure after being cut into sections to be connected with the built-in chip 3 of the digital electronic detonator, so that the ignition powder can be impacted, protected by pressure and kept in the shape, and meanwhile, the built-in chip 3 of the digital electronic detonator can provide surrounding pressure when being inserted, so that the ignition powder in the hose can be ensured to have pressure to the electric bridge wire 31, and the flame direction after the ignition powder is ignited can be restrained.

In use, the ignition charge is placed in the charge chamber 112 of the body portion 11. The amount of pressure provided by the press plug 12 is determined as required by the nature of the pyrotechnic formulation. According to the working requirement, the acquisition mode of the power of the press plug 12 is determined, and manpower, electric energy and other forms of energy can be selected. And selecting the inner diameter of the hose 2 according to the size of the chip 3 arranged in the digital electronic detonator. The ignition charge temporarily stored in the charge chamber 112 is pressed out from the ignition charge outlet 113 into the hose 2 by the pressure provided by the press plug 12. Then the hose 2 is cut to a proper length according to the formula of the ignition powder and the required quantity of the ignition powder. And inserting the digital electronic detonator built-in chip 3 from the top of the cut section of the hose 2 until the bridge wire 31 on the digital electronic detonator built-in chip 3 is close to the bottom of the hose.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A digital electronic detonator explosive head and a production method thereof comprise an explosive injection device and a hose. The powder injection device comprises a main body part and a press plug and is used for injecting ignition powder into the hose. The main body part is provided with a press plug inlet, a charging chamber and an ignition powder outlet. The pressing plug inlet is correspondingly connected with the pressing plug and is used for providing an inlet for the pressing plug to enter the main body part, so that the pressing plug provides pressure for ignition powder in the powder charging chamber. The upper part of the charging chamber is provided with a press plug inlet, the lower part of the charging chamber is connected with an ignition powder outlet, and the charging chamber is provided with a larger cavity for temporarily storing the ignition powder. The ignition powder outlet is provided with a smaller caliber and is used for discharging the ignition powder in the powder charging chamber. The pressing plug is connected with the upper part of the main body part and can reciprocate in the powder charging chamber to provide pressure for ignition powder in the powder charging chamber to flow out.

2. A digital electronic detonator charge head and method for producing the same as claimed in claim 1 wherein said hose is connectable to a charge outlet for storage of an ignition charge. After the hose is cut into sections, the hose can deform under pressure to connect a built-in chip of the digital electronic detonator, so that the hose is used for reducing the impact pressure on ignition powder and restraining the ignition powder head to be formed. The chip can provide restraint when being inserted, ensures that the ignition powder does not spread to the periphery, and restrains the flame direction generated by the ignition powder after ignition.