Detonator pluggable high-voltage detonator seat and mounting method thereof

Abstract

The invention discloses a detonator pluggable high-voltage detonator seat and an installation method thereof.The detonator seat comprises a shell, a voltage-withstanding insulation base, a protection tube, an insertion hole and a high-voltage wire, the shell is used for installing a detonator, the voltage-withstanding insulation base is installed in a cavity of the shell, the protection tube is connected with the insertion hole in a sleeved mode, the protection tube is connected with the voltage-withstanding insulation base, and the high-voltage wire is arranged in the insertion hole. And the jack is connected with a high-voltage lead. According to the invention, the detonator and the high-voltage control unit are electrically interconnected in a manner that the insertion holes and the detonator insertion pins are inserted and interconnected, so that a detonator insertion and extraction type installation function is realized. The pluggable installation can be realized only by inserting the detonator and then tightening the screw, the operation is rapid and convenient, and the installation efficiency can be improved by more than 85% through evaluation. The plug-pull type installation is nondestructive installation, so that the defect can be effectively avoided, and the reliability of the detonator seat and the qualified rate of batch production are effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of detonating device, and particularly relates to a pluggable high-voltage detonator seat and a mounting method thereof. BACKGROUND

[0002] The shock plate detonator with high-voltage and large-current high-energy electric pulse initiation is used as the initiating element in the straight-line initiation sequence of the initiation control system. In the design of most conventional straight-line initiation control systems, the shock plate detonator is usually mounted and fixed by the following methods: first, a mounting cavity is designed on the product body structure, a mounting cavity is formed by using special glue to seal, and a fixed plate is processed, and then the detonator pin is connected to the high-voltage control unit by welding the high-voltage wire, as shown in Figure 9 ; or a welding hole or pad matching the detonator pin is formed on the high-voltage control unit circuit board, and the detonator pin is directly welded to the high-voltage control unit, as shown in Figure 10 . Finally, the two commonly used typical detonator mounting methods need to seal the glue or design the pressure ring to fix the detonator, so as to prevent the detonator from being displaced and the detonation gap from being enlarged under the impact and vibration environment, thereby affecting the detonation performance.

[0003] In the conventional detonator mounting method, the interconnection between the detonator and the high-voltage control unit usually needs to use an electric soldering iron to weld the detonator pin and the high-voltage wire, and then use the insulating sealing glue or the pressure ring to fix it. According to the safety requirements of the product with the initiating explosive, the initiation control system can only be fully functional and powered on before the initiating explosive is loaded, and after being loaded, only the insurance state inspection and insulation resistance test can be performed to ensure safety. When the initiation control system with such a detonator mounting method needs to be tested and experimented for unit function performance and other fire removal examination links, the simulation detonator with the same appearance structure as the detonator and the inert material instead of the explosive is used to replace the real detonator and welded to the high-voltage control unit to carry out full function test and experiment. After passing the examination, the product shell is opened, the simulation detonator is disassembled and removed, and the real shock plate detonator is installed and welded. This process needs to repeatedly disassemble the product shell to replace the simulation detonator with the real detonator, which is complex and tedious, has low operation efficiency, and has many replacement times, which is easy to cause damage to the detonator pin, the high-voltage wire and the high-voltage control unit, thereby reducing the product reliability and service life. In addition, the electrical insulation requirements of high voltage and large current in the narrow space need to be fully considered, and the safety insulation distance between the two poles needs to be paid special attention to by the operator when welding the high-voltage wire and the detonator pin, which requires high welding and installation of the detonator.

[0004] The patent application file with publication number CN221037124U discloses a split type detonator adapter. The split type detonator adapter can effectively eliminate the contact of fire substances in the environment with the detonator when installing the detonator for subsequent use, making the detonator safer in production, storage or transportation, and better preventing external interference from triggering early explosion or misfire, etc. The waterproof function can be realized by sleeving the detonator conductor shell, and it can be applied to underwater environment. The plug-in interface arrangement of the device cannot be used for multiple detonators, and cannot be used for unit function performance testing and test evaluation, etc.

[0005] The patent application file with publication number CN208347752U discloses a cable detonation device. The sealed plug pin is sealingly installed at one end of the detonator seat. The two poles of the contact type magneto detonator are the shell and the single-pin plug pin, which are installed at the other end of the detonator seat through the detonator pressure cap. At the same time, the single-pin plug pin of the contact type magneto detonator is inserted into the inside of the sealed plug pin. The cable detonation device can realize the quick connection of the magneto detonator and the safe connection process of the electrician before the fire worker, improve the safety degree and success rate of construction. However, the device lacks a structure for fixing the detonation control system for the all-electronic trigger lead detonator. SUMMARY

[0006] The present application provides a detonator pluggable high-voltage detonator seat and its installation method, which can solve the technical problems of high welding requirements of traditional detonator welding type installation method, and complicated replacement and installation operation between simulated detonators and real detonators in the development and production process, and easy damage to products, improve the convenience, reliability and non-destructive nature of detonator installation, and further improve the qualified rate of batch production and product life.

[0007] The present application is realized by the following technical solutions.

[0008] The present application provides a detonator pluggable high-voltage detonator seat, which comprises a shell, a pressure-resistant insulating base, a protective tube, a jack and a high-voltage lead. The shell is used for installing a detonator. The pressure-resistant insulating base is installed in the cavity of the shell. The protective tube is sleeved with the jack. The protective tube is connected with the pressure-resistant insulating base. The jack is connected with the high-voltage lead.

[0009] Preferably, the jack end of the shell is provided with a first flange, the first flange is connected with the detonator, and a first counterbore and a screw hole are arranged on the first flange.

[0010] Preferably, a support step is arranged in the cavity. A limiting groove is arranged on the side wall of the cavity. A concave groove is arranged on the inner wall of the cavity.

[0011] Preferably, a second counterbore is arranged on the pressure-resistant insulating base. The protective tube is connected by extending into the pressure-resistant insulating base through the second counterbore. A boss is arranged on the side wall of the pressure-resistant insulating base.

[0012] Preferably, the protective tube is arranged in a hollow cylindrical shape, and a protrusion is arranged on the protective tube.

[0013] Preferably, an elastic groove is arranged at one end of the insertion hole, and a second flange is arranged at the other end to connect the wire slot, and the insertion hole is connected with the high-voltage wire through the wire slot.

[0014] Preferably, a fixing groove is arranged coaxially on the outer wall of the insertion hole, and the fixing groove is annular.

[0015] Preferably, the shell is made of aluminum alloy, the pressure-resistant insulating base is made of polyphenylene sulfide, the protective tube is made of beryllium bronze or steel, and the insertion hole is made of beryllium bronze.

[0016] A mounting method of the plug-in high-voltage detonator seat, comprising the following steps: S1: one end of the insertion hole arranged with the elastic groove is inserted into the protective tube, the protrusion is clamped into the fixing groove to obtain an insertion assembly, and then the insertion assembly is inserted into the second counterbore of the pressure-resistant insulating base to be connected with the pressure-resistant insulating base, S2: the pressure-resistant insulating base is placed with the end of the boss away from the shell facing the shell, then the boss of the pressure-resistant insulating base is aligned with the limiting groove and placed into the cavity of the shell, and the bottom of the pressure-resistant insulating base is in contact with the support step, S3: one end of the high-voltage wire is welded with the wire slot, S4: the detonation control system is mounted on the first flange of the shell by penetrating the first counterbore with a screw, and the detonator is mounted on the first flange of the shell by penetrating the screw hole with a screw.

[0017] Preferably, the insertion assembly is immersed in a solid film protective agent before being inserted into the second counterbore of the pressure-resistant insulating base in step S1, and the insertion assembly is fixed in the second counterbore by using glue, and the outer surface of the pressure-resistant insulating base is coated with adhesive before being placed into the cavity in step S2, and the pressure-resistant insulating base is filled with adhesive after being placed into the cavity.

[0018] The present application has the following beneficial effects: The present application electrically connects the detonator and the high-voltage control unit in a way that the insertion hole and the detonator pin are connected to each other, and realizes the plug-in mounting function of the detonator. The plug-in mounting of the present application only needs to insert the detonator and tighten the screw, which is fast and convenient. The installation efficiency can be improved by more than 85% after evaluation. The plug-in mounting of the present application is lossless, which can effectively avoid the defect and effectively improve the reliability of the detonator seat and the qualified rate of batch production. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a bottom view of the present application; Figure 3 yes Figure 2 AA cross-section of Figure 4 is a top view of the present invention; Figure 5 It is a schematic diagram of the installation of the detonator of the present invention; Figure 6 It is a structural schematic diagram of the housing of the present invention; Figure 7 It is a structural schematic diagram of the protective tube of the present invention; Figure 8 It is a structural schematic diagram of the jack of the present invention; Figure 9 It is a structural diagram of an existing detonation control system; Figure 10 It is a structural diagram of an existing detonation control system; In the figure: 1-shell, 11-cavity, 12-support step, 13-limiting groove, 14-concave groove, 2-voltage-resistant insulating base, 21-second countersunk hole, 22-boss, 3-protective tube, 31-protrusion, 4-jack, 41-elastic groove, 42-wiring groove, 43-fixing groove, 44-second flange, 5-high-voltage wire, 6-detonator, 7-first flange, 71-first countersunk hole, 72-screw hole. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0021] Example: like Figures 1 to 8 As shown, a pluggable high-voltage detonator seat is composed of a shell 1, a voltage-resistant insulating base 2, four protective tubes 3, four jacks 4 and two high-voltage wires 5. The shell 1 is used to install the detonator 6, the voltage-resistant insulating base 2 is installed in the cavity 11 of the shell 1, the protective tube 3 is sleeved on the jack 4, the protective tube 3 is connected to the voltage-resistant insulating base 2, and the jack 4 is connected to the high-voltage wire 5.

[0022] The socket end of the shell 1 is provided with a first flange 7, which is connected to the detonator 6. The first flange 7 is provided with a first countersunk hole 71 for installation on the detonation control system and a screw hole 72 for installing the detonator, so as to meet the strength requirements under mechanical environments such as impact and vibration after being installed on the detonation control system, and can effectively control the explosion transmission gap after the detonator 6 is installed.

[0023] A support step 12 is provided in the cavity 11, a limiting groove 13 is provided on the side wall of the cavity 11, and a concave groove 14 is provided on the inner wall of the cavity 11. GD-3S adhesive is poured into the end face so that the GD-3S adhesive in the concave groove 14 is engaged with the shell 1 as a whole after curing, which is more stable.

[0024] The second counterbore 21 is arranged on the pressure-resistant insulating base 2, the protective tube 3 is connected through the second counterbore 21, the side wall of the pressure-resistant insulating base 2 is provided with a boss 22, the boss 22 is arranged in the limiting groove 13, the rotation displacement of the pressure-resistant insulating base 2 in the cavity 11 after being assembled is prevented, and the position of the four insertion holes 4 on the pressure-resistant insulating base 2 is fixed. The detonator plug-in assembly is redundantly designed, four second counterbores 21 distributed in the long direction are designed on the pressure-resistant insulating base 2 for mounting the plug-in assembly, two plug-in assemblies with close distances are of the same polarity (no polarity requirement when the detonator is mounted), and the insulation distance of the two poles is greater than 3 mm, so that the plug-in reliability is improved, the high-voltage breakdown phenomenon is prevented, and the error-proof function of the detonator 6 is realized; the boss 22 is protruded from the limiting groove of the shell 1, the installation of the pressure-resistant insulating base 2 is limited, and the positions of the four plug-in assemblies are fixed.

[0025] The protective tube 3 is arranged in a hollow cylindrical shape, and three protrusions 31 are arranged on the protective tube 3. One protective tube 3 is sleeved on the plug-in hole end of each insertion hole 4, and the three protrusions 31 are arranged in the fixing groove 43 to form a limiting position, thereby forming the plug-in assembly as a whole.

[0026] The protective tube 3 is sleeved on the outside of the insertion hole 4 to form the plug-in assembly, thereby providing radial support for the insertion hole 4 and limiting the radial deformation of the insertion hole 4, preventing the deformation of the insertion hole 4 from causing disconnection during repeated insertion and extraction of the detonator 6; the plug-in assembly requires high assembly, the head of the insertion hole 4 is closed and press-fitted into the protective tube 3, three-point riveting is realized through the connection of the three protrusions 31 and the fixing groove 43, and the separation force should be greater than 0.5 N when the corresponding standard pin is used for hoisting and inspection.

[0027] One end of the insertion hole 4 is provided with an elastic groove 41, and the elastic groove 41 is symmetrically arranged at two positions, so as to increase the radial pressure of the insertion hole 4 on the detonator 6 when the detonator 6 is inserted, reduce the contact resistance, improve the stability of the plug-in connection and the reliability of the electrical connection; the other end of the insertion hole 4 is connected with the wiring groove 42 through the second flange 44, and the insertion hole 4 is connected with the high-voltage wire 5 through the wiring groove 42. When the overall height of the initiation control system is insufficient, the high-voltage wire 5 can be led out through the wire groove on the side of the shell 1, so as to reduce the axial space required for the detonator seat installation. The second flange 44 is circular and matched with the second counterbore 21, and is used for positioning and installation.

[0028] The fixed groove 43 is coaxially arranged on the outer wall of the insertion hole 4, and the fixed groove 43 is annular.

[0029] The size of the insertion hole 4 can be adaptively designed according to the selected pin of the detonator 6, and the depth of the insertion hole 4 should be controlled to ensure that the electrical engagement length of the insertion hole 4 and the pin of the detonator 6 when being inserted is greater than 0.86 mm, so as to meet the electrical engagement requirement of the series II connecting plug specified in GJB599-93, and the standard electrical engagement length can be designed to be more than 1.5 times when the space size is sufficient.

[0030] The shell 1 is made of aluminum alloy; The pressure-resistant insulating base 2 is made of polyphenylene sulfide, which has high mechanical strength, good thermal stability, low dielectric loss, high resistivity and other excellent mechanical and electrical properties, facilitating processing and preventing high-voltage breakdown; The protective tube 3 is made of beryllium bronze or steel, and is plated with gold or silver after processing according to needs; The jack 4 is made of beryllium bronze, and is plated with gold or silver after processing according to actual needs to improve wear resistance and electrical conductivity and reduce high-voltage discharge loss.

[0031] A mounting method of a detonator pluggable high-voltage detonator seat, comprising the following steps: S1: one end of the elastic groove 41 of the jack 4 is inserted into the protective tube 3, and the protrusion 31 is clamped into the fixed groove 43 to obtain a plug-in assembly. After the plug-in assembly is inspected and separated by using a corresponding standard pin to meet the requirements, the plug-in assembly is inserted into the second counterbore 21 of the pressure-resistant insulating base 2 to connect with the pressure-resistant insulating base 2; S2: the pressure-resistant insulating base 2 is placed with the boss 22 away from the one end of the shell 1 facing the shell 1, and then the boss 22 of the pressure-resistant insulating base 2 is aligned with the limiting groove 13 and placed into the cavity 11 of the shell 1 until the bottom of the pressure-resistant insulating base 2 contacts the support step 12; S3: the four jacks 4 are divided into two groups, and one end of each high-voltage lead 5 is welded to two adjacent wiring grooves 42; S4: the detonation control system is installed on the first flange 7 of the shell 1 by using a screw to penetrate the first counterbore 71, and the detonator 6 is installed on the first flange 7 of the shell 1 by using a screw to penetrate the screw hole 72.

[0032] In the step S1, the plug-in assembly is immersed in DJB-823 solid film protective agent before being inserted into the second counterbore 21 of the pressure-resistant insulating base 2. After being immersed in DJB-823 solid film protective agent, a smooth protective film layer is formed on the surface of the plug-in assembly to reduce mechanical wear caused by repeated plugging and unplugging, further reduce and stabilize the plugging and unplugging separation force, and thereby improve the service life of the detonator seat; The plug-in assembly is fixed in the second counterbore 21 by 168 glue. In the step S2, the pressure-resistant insulating base 2 is placed into the cavity 11 after being coated with GD-3S adhesive on the outer surface, and the pressure-resistant insulating base 2 is sealed and installed by using GD-3S adhesive after being placed into the cavity 11.

[0033] The present application adopts the mode of electrical interconnection of the plug hole and the detonator plug pin to the detonator and the high-voltage control unit, realizes the plug-in installation function of the detonator. The detonator seat is a device for connecting the detonator and the high-voltage control unit in the initiation control system. The direct sequence of the initiation control system usually adopts the impact disc detonator with high voltage and large current high-energy electric pulse initiation as the initiation element. The existing welding type installation needs to disassemble the product cover plate and use the electric soldering iron to remove the real detonator after welding, installation, sealing and fixing, which is time-consuming and laborious. The plug-in installation of the present application only needs to insert the detonator and tighten the screw, which is quick and convenient, and the installation efficiency can be improved by more than 85% through evaluation.

[0034] The existing welding type installation is easy to cause damage to the detonator pin, high-voltage wire and welding pad during multiple disassembly and replacement processes, while the plug-in installation of the present application is lossless and can effectively avoid this defect, effectively improving the reliability of the detonator seat and the qualified rate of batch production.

[0035] The conventional installation mode of the detonator is easy to cause damage to the detonator seat and the high-voltage wire is easy to wear and shorten with the increase of the installation times during the installation and repeated disassembly and replacement of the detonator, and the replacement life is usually only a few times, while the plug-in life of the detonator seat of the present application can reach nearly a thousand times after the treatment of the plug hole and the like in the embodiment, effectively improving the replacement life of the detonator.

Claims

1. A pluggable high-voltage detonator seat, characterized by: The invention comprises a shell (1), a pressure-resistant insulating base (2), a protective tube (3), a socket (4) and a high-voltage conductor (5), wherein the shell (1) is used for installing a detonator (6), the pressure-resistant insulating base (2) is installed in a cavity (11) of the shell (1), the protective tube (3) is sleeved on the socket (4), the protective tube (3) is connected to the pressure-resistant insulating base (2), and the socket (4) is connected to the high-voltage conductor (5).

2. The pluggable high-voltage detonator seat according to claim 1, characterized in that: The socket end of the housing (1) is provided with a first flange (7), the first flange (7) is connected to the detonator (6), and a first countersunk hole (71) and a screw hole (72) are provided on the first flange (7).

3. The pluggable high-voltage detonator seat according to claim 1, characterized in that: A supporting step (12) is provided in the cavity (11), a limiting groove (13) is provided on the side wall of the cavity (11), and a concave groove (14) is provided on the inner wall of the cavity (11).

4. The pluggable high-voltage detonator seat according to claim 1, characterized in that: A second countersunk hole (21) is provided on the pressure-resistant insulating base (2), and the protective tube (3) extends into the pressure-resistant insulating base (2) through the second countersunk hole (21) for connection. A boss (22) is provided on the side wall of the pressure-resistant insulating base (2).

5. The pluggable high-voltage detonator seat according to claim 1, characterized in that: The protective tube (3) is arranged in a hollow cylindrical shape, and a protrusion (31) is arranged on the protective tube (3).

6. The pluggable high-voltage detonator seat according to claim 1, characterized in that: An elastic groove (41) is provided at one end of the jack (4), and a second flange (44) is provided at the other end to connect to a wiring groove (42). The jack (4) is connected to the high-voltage wire (5) via the wiring groove (42).

7. The pluggable high-voltage detonator seat according to claim 6, characterized in that: A fixing groove (43) is coaxially arranged on the outer wall of the insertion hole (4), and the fixing groove (43) is annular.

8. The pluggable high-voltage detonator seat according to claim 1, characterized in that: The housing (1) is made of aluminum alloy, the pressure-resistant insulating base (2) is made of polyphenylene sulfide, the protective tube (3) is made of beryllium bronze or steel, and the jack (4) is made of beryllium bronze.

9. A method for installing a pluggable high-voltage detonator seat according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Extend one end of the jack (4) provided with the elastic groove (41) into the protective tube (3), and make the protrusion (31) snap into the fixing groove (43) to obtain a plug-in assembly, and then insert the plug-in assembly into the second countersunk hole (21) of the pressure-resistant insulating base (2) to connect with the pressure-resistant insulating base (2); S2: Place the end of the pressure-resistant insulating base (2) with the boss (22) facing away from the housing (1) toward the housing (1), and then align the boss (22) of the pressure-resistant insulating base (2) with the limiting groove (13) and place it into the cavity (11) of the housing (1) until the bottom of the pressure-resistant insulating base (2) contacts the support step (12); S3: Weld one end of the high-voltage wire (5) to the wiring slot (42); S4: Using screws to penetrate the first countersunk hole (71), the explosion control system is mounted on the first flange (7) of the housing (1); using screws to penetrate the screw hole (72), the detonator (6) is mounted on the first flange (7) of the housing (1).

10. The method for installing a pluggable high-voltage detonator seat according to claim 9, characterized in that: In the step S1, the plug-in component is dipped in a solid film protective agent and then inserted into the second countersunk hole (21) of the voltage-resistant insulating base (2), and the plug-in component is fixed in the second countersunk hole (21) by glue; in the step S2, the outer surface of the voltage-resistant insulating base (2) is coated with adhesive and then placed in the cavity (11), and the voltage-resistant insulating base (2) is sealed with adhesive after being placed in the cavity (11).

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