Sealing plug for improving antistatic capability of detonator

Abstract

The utility model discloses a sealing plug for improving the antistatic capacity of a detonator, which particularly relates to the technical field of antistatic capacity of detonators and comprises a detonator leg wire, a discharge electrode, a limiting boss, an ignition circuit, an insulating tube and an ignition element. Detonator leg wires are respectively connected with discharge electrodes, and the discharge electrodes are far away from the ignition element as far as possible in the design range of the detonator. And the discharge electrode is connected and conducted with the ignition circuit and the ignition element through welding or any other mode. The insulation tube is arranged below the limiting boss, an ignition element is arranged in the insulation tube, an ignition circuit is arranged in the insulation tube, and the ignition element is connected with the detonator leg wire through the ignition circuit. According to the utility model, the position of the discharge electrode is flexibly adjusted, so that the anti-static capacity of the detonator is effectively controlled. The insulating tube is arranged between the ignition element close to or containing the sensitive agent and the detonator shell, so that electric arc generated by discharge at the position is avoided, and the detonator is ensured not to be detonated by the electric arc when being subjected to electrostatic stimulation.

Description

Technical Field

[0001] The utility model relates to the field of antistatic of detonators, in particular to a sealing plug for improving the antistatic ability of detonators. Background Art

[0002] Static electricity accumulation is unavoidable during the manufacture and use of detonators. When the charge accumulates to a certain potential, slight interference or stimulation from the outside world will cause static electricity discharge. The discharge process often produces instantaneous pulsed large currents, which can complete discharges of hundreds of amperes in nanoseconds or microseconds, enough to ionize and break down the air, and produce arcs accompanied by light and heat, causing the detonator to ignite accidentally.

[0003] At present, some detonators on the market that are electrically ignited or contain electronic chips must require a high degree of insulation between the leg wire and the tube shell. The use of conductive materials as an anti-static solution on certain components will directly affect the functionality of the product. Therefore, there are many disadvantages in using conductive materials to solve the electrostatic safety problem of detonators. In particular, in some special usage environments, short circuits, signal loss or loss may occur, causing quality problems for detonators. In addition, these conductive materials are difficult to manufacture, costly, and have poor anti-static effects. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a sealing plug for improving the antistatic ability of a detonator, comprising:

[0005] Detonator pin wire, one end of which is connected to the ignition element through the ignition circuit, and the other end is connected to the output end of the detonator when in use. The detonator pin wire needs to be safely short-circuited during storage and transportation; one end of the discharge electrode is connected to the respective detonator pin wire, and the other ends of any two or more discharge electrodes are insulated from each other and do not touch;

[0006] A discharge electrode, the position of which is as far away from the ignition element as possible within the design range of the detonator. One end of each discharge electrode is connected to the leg wire of each detonator, and the other ends of any two or more discharge electrodes are insulated from each other and do not touch each other;

[0007] An insulating tube, wherein the insulating tube is arranged below the limiting boss, an ignition element is arranged inside the insulating tube, an ignition circuit is arranged inside the insulating tube, and the ignition element is connected to the detonator leg wire through the ignition circuit.

[0008] Preferably, the distance between the discharge electrode and the detonator shell is smaller than the distance between the ignition element and the detonator shell.

[0009] Preferably, the discharge electrode is within the design range of the detonator and is arranged at a position as far away from the ignition element as possible.

[0010] Preferably, the maximum radial dimension of the end of the discharge electrode is smaller than the maximum outer diameter of the end of the limiting boss.

[0011] Preferably, the insulating tube is arranged below the limiting boss.

[0012] Preferably, the insulating tube is arranged between the ignition element and the detonator shell.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] By flexibly adjusting the position of the discharge electrode, the anti-static ability of the detonator can be effectively controlled. An insulating tube is set between the ignition element close to or containing sensitive agents and the detonator shell to avoid discharge and arc generation here, ensuring that the detonator is not detonated and the safety of operators and equipment. At the same time, the high insulation of the detonator leg wire and the shell is ensured, which does not affect the functionality of the detonator and avoids problems such as short circuit, signal loss or loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Description of reference numerals:

[0018] 1. Detonator leg wire; 2. Discharge electrode; 3. Limiting boss; 4. Ignition circuit; 5. Insulating tube; 6. Ignition element. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Reference Figure 1 As shown, a sealing plug for improving the antistatic ability of a detonator comprises:

[0021] Detonator leg wires 1, each of which is connected to a discharge electrode 2;

[0022] An insulating tube 5, the insulating tube 5 is arranged below the limiting boss 3, an ignition element 6 is arranged inside the insulating tube 5, an ignition circuit 4 is arranged inside the insulating tube 5, and the ignition element 6 is connected to the detonator foot wire 1 through the ignition circuit 4;

[0023] Furthermore, the distance between the discharge electrode 2 and the detonator shell is smaller than the distance between the ignition element 6 and the detonator shell, and static electricity is discharged preferentially at the discharge electrode 2 to generate an arc;

[0024] Furthermore, the discharge electrode 2 is within the design range of the detonator and is arranged at a position as far away from the ignition element 6 as possible. Discharging at this position will not cause the ignition element 6 to function.

[0025] Furthermore, the maximum radial dimension of the end of the discharge electrode 2 is smaller than the maximum outer diameter of the end of the limiting boss 3. The relative position of the discharge electrode 2 can be any angle and direction, but they are not allowed to contact each other to ensure high insulation. It is not allowed to be closer to the detonator shell than the limiting boss 3. The end of the discharge electrode 2 is not blocked by any other object, only air spaced, and the shape of the limiting boss 3 can be arbitrary, and can be around a circle or locally distributed.

[0026] Furthermore, the insulating tube 5 is arranged below the limiting boss 3 .

[0027] Furthermore, the insulating tube 5 is arranged between the ignition element 6 and the detonator shell.

[0028] Through the above technical solution:

[0029] During use, in order to ensure the anti-static ability requirements of existing oil field detonators, the position of the discharge electrode 2 can be flexibly adjusted to achieve effective control of the anti-static ability of the detonator. First, the discharge electrode 2 is required to be as far away from the ignition element 6 as possible within the design range of the detonator. Secondly, the distance between the discharge electrode 2 and the detonator tube wall is designed so that static electricity is preferentially discharged at a position away from the ignition element 6 to generate an arc. Finally, an insulating tube 5 is arranged between the ignition element 6 and the detonator shell to avoid static electricity from discharging at this position to generate an arc, thereby ensuring the static safety of the detonator. At the same time, the insulation of the detonator foot line 1 and the detonator shell is ensured, so as not to affect the functionality of the detonator and avoid problems such as short circuit or signal loss or consumption.

[0030] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sealing plug for improving the antistatic ability of a detonator, characterized in that: include: Detonator pins (1), each of the detonator pins (1) may be connected to one or more discharge electrodes (2), one end of the detonator pins (1) is connected to an ignition element (6) via an ignition circuit (4), and the other end is connected to an output end of a detonator when in use, and the detonator pins (1) are safely short-circuited during storage and transportation; The discharge electrode (2) is positioned as far away from the ignition element (6) as possible within the design range of the detonator; One end of the discharge electrode (2) is connected to the respective detonator leg wire (1) for conduction, and the other ends of any two or more discharge electrodes (2) are insulated from each other and do not contact each other; An insulating tube (5), the insulating tube (5) being arranged below the limiting boss (3), an ignition element (6) being arranged inside the insulating tube (5), an ignition circuit (4) being arranged inside the insulating tube (5), and the ignition element (6) being connected to the detonator leg wire (1) via the ignition circuit (4).

2. A sealing plug for improving the antistatic ability of a detonator according to claim 1, characterized in that: The distance between the discharge electrode (2) and the detonator shell is smaller than the distance between the ignition element (6) and the detonator shell.

3. A sealing plug for improving the antistatic ability of a detonator according to claim 1, characterized in that: The position of the discharge electrode (2) is as far away from the ignition element (6) as possible within the design range of the detonator.

4. A sealing plug for improving the antistatic ability of a detonator according to claim 1, characterized in that: The maximum dimension of the end of the discharge electrode (2) is smaller than the maximum outer diameter of the limiting boss (3) in the radial direction.

5. A sealing plug for improving the antistatic ability of a detonator according to claim 1, characterized in that: The insulating tube (5) is arranged below the limiting boss (3).

6. A sealing plug for improving the antistatic ability of a detonator according to claim 1, characterized in that: The insulating tube (5) is arranged between the ignition element (6) and the detonator shell.

Images