A high current coaxial cable connection device

Abstract

The application discloses a large-current coaxial cable connecting device, which comprises an inner core connecting seat and an outer core connecting seat, the inner core connecting seat is internally provided with an inner core socket, one end of the inner core socket is fixedly connected with the inner core connecting seat, the other end of the inner core socket is provided with a blind, the outer core connecting seat is internally fixedly provided with an outer core socket, one end of the outer core socket is fixedly connected with the outer core connecting seat, the other end of the outer core socket is provided with an outer core sleeve, an outer core cable insertion port is arranged between the outer core sleeve and the outer core socket, an insulating sleeve is fixedly arranged between the inner core connecting seat and the outer core connecting seat, one end of the insulating sleeve is abuttingly connected with the inner core connecting seat, and the other end of the insulating sleeve is abuttingly connected with the outer core connecting seat, so that the wire is prevented from being bent and broken due to the action of an electromagnetic force.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pulse discharge, and particularly relates to a large-current coaxial cable connecting device. BACKGROUND

[0002] Large-current pulse discharge belongs to the field of pulse power, and generally, energy is slowly stored in energy storage devices, and then is rapidly released through switches to obtain large-current and high-power output. Pulse power energy storage devices generally include pulse capacitors, pulse reactors and single-pole generators, and the large-current discharge technology has a wide range of applications in civil and military fields. In the civil field, the technology is mainly used in pulse capacitor detection, pulse magnetic field shaping processing, electric pulse oil extraction and the like, and in the military field, the technology is mainly used in electromagnetic gun launching, missile electromagnetic launching, controllable nuclear fusion and the like.

[0003] In the pulse power device, large-specification coaxial cables are used to connect energy storage devices, wave modulation devices and loads. When pulse large-current discharge occurs, strong electromagnetic expansion forces are generated between the inner and outer cores of the coaxial cable, and destructive electromagnetic forces exist at the hard and soft connection positions of the wires. In the existing coaxial cable connecting device, due to the existence of these electromagnetic forces, the inner core wire is bent, the cable inner joint is pulled off, and the joint and the soft wire are separated from each other during the test process. SUMMARY

[0004] To solve the above technical problems, the application provides a large-current coaxial cable connecting device.

[0005] The specific scheme is as follows:

[0006] The large-current coaxial cable connecting device comprises an inner core connecting seat and an outer core connecting seat, the inner core connecting seat is provided with an inner core socket, one end of the inner core socket is fixedly connected with the inner core connecting seat, the other end of the inner core socket is provided with a blind hole, the outer core connecting seat is fixedly provided with an outer core socket, one end of the outer core socket is fixedly connected with the outer core connecting seat, the other end of the outer core socket is provided with an outer core sleeve, the outer core sleeve and the outer core socket are provided with an outer core cable insertion opening therebetween, the inner core connecting seat and the outer core connecting seat are fixedly provided with an insulating sleeve, one end of the insulating sleeve is abuttingly connected with the inner core connecting seat, and the other end of the insulating sleeve is abuttingly connected with the outer core connecting seat.

[0007] The inner core socket is a solid metal column, the blind hole is provided with a cable inner core, and the cable inner core is tightly connected with the blind hole through pulse strong magnetic field tightness processing.

[0008] The outer core socket is a ring structure, the ring structure comprises an inner ring body and an outer ring body, the outer ring body is fixed on the inner ring body, the length of the central axis of the inner ring body is greater than the length of the central axis of the outer ring body, the inner ring body is a hollow metal cylinder, and the outer ring body is a solid metal cylinder.

[0009] One end of the inner ring body is detachably connected with the outer core connecting seat, the outer core connecting seat is in abutment connection with the outer ring body, and the other end of the inner ring body is sleeved with an outer core sleeve in abutment connection with the outer ring body.

[0010] The inner core connecting seat comprises an inner core first connecting seat and an inner core second connecting seat, inner core seat assembly holes are formed in the inner core first connecting seat and the inner core second connecting seat, inner core seat connecting bolts are arranged in the inner core seat assembly holes, and the inner core first connecting seat and the inner core second connecting seat are detachably connected through the inner core connecting bolts.

[0011] The outer core connecting seat comprises an outer core first connecting seat and an outer core second connecting seat, outer core seat assembly holes are formed in the outer core first connecting seat and the outer core second connecting seat, outer core connecting bolts are arranged in the outer core seat assembly holes, and the outer core first connecting seat and the outer core second connecting seat are detachably connected through the outer core connecting bolts.

[0012] The inner core first connecting seat, the inner core second connecting seat, the outer core first connecting seat and the outer core second connecting seat are all fan-shaped blocks.

[0013] A cable through hole is arranged at the central position of the outer core first connecting seat and the outer core second connecting seat, and the cable through hole is detachably connected with the outer core socket.

[0014] A fixing lug is arranged on the inner core first connecting seat or the inner core second connecting seat, a fixing lug is arranged on the outer core first connecting seat or the outer core second connecting seat, and a fixing hole is arranged on the fixing lug.

[0015] The inner core connecting seat and the outer core connecting seat are both made of a metal conductive material.

[0016] The application discloses a large-current coaxial cable connecting device, adopts an inner core socket, and can firmly and tightly connect the inner core socket and inner core flexible wires of the coaxial cable together; the structure strength is increased, and the contact resistance is reduced; an insulating sleeve arranged between the inner core connecting seat and the outer core connecting seat can resist strong electromagnetic force generated by cable power-on, constrain the inner core flexible wires of the cable in the sleeve, and avoid bending deformation of the inner core of the cable; in addition, the inner core connecting seat and the outer core connecting seat in the application adopt a bolt and corresponding plug connecting mode, can connect the inner core and the outer core of the coaxial cable with target metal plates respectively, can resist cable bending moment and electromagnetic force during power-on, and the bolt position and size are flexible and variable.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a sectional view of coaxial cable in the connecting device.

[0018] Fig. 2 is a structural schematic view of inner core socket.

[0019] Fig. 3 is a structural schematic view of outer core socket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0021] As shown in Figs. 1 to 3 a large-current coaxial cable connecting device, the coaxial cable includes a cable inner core 1, the cable inner core 1 is coated with an inner core insulating layer 2, and a cable outer core 3 is uniformly laid on the inner core insulating layer 2. Usually, the cable outer core 3 is laid on the inner core insulating layer 2 in a mesh structure. The large-current coaxial cable connecting device includes an inner core connecting seat 12 and an outer core connecting seat 9. The inner core connecting seat 12 is provided with an inner core socket 15. One end of the inner core socket 15 is fixedly connected with the inner core connecting seat 12, and the other end of the inner core socket 15 is provided with a blind hole 20. The outer core connecting seat 9 is fixedly provided with an outer core socket 4. One end of the outer core socket 4 is fixedly connected with the outer core connecting seat 9, and the other end of the outer core socket 4 is provided with an outer core sleeve 19. An outer core cable insertion port is arranged between the outer core sleeve 19 and the outer core socket 4. An insulating sleeve 17 is fixedly arranged between the inner core connecting seat 12 and the outer core connecting seat 9. One end of the insulating sleeve 17 is abuttingly connected with the inner core connecting seat 12, and the other end of the insulating sleeve 17 is abuttingly connected with the outer core connecting seat 9. The outer layer of the cable inner core 1 is the inner core insulating layer 2, and the outer side of the inner core insulating layer 2 between the inner core connecting seat 12 and the outer core connecting seat 9 is reinforced by the insulating sleeve 17. Preferably, the insulating sleeve 17 is made of an insulating material with high voltage resistance, and has certain mechanical strength and impact resistance, such as epoxy resin, epoxy glass fiber, etc.

[0022] The inner core socket 15 is a solid metal cylinder. In this embodiment, the inner core socket 15 is a metal cylinder before processing, and after processing, a blind hole 20 is opened at one end of the inner core socket 15, and the other end of the inner core socket 15 is solid. The blind hole 20 on the inner core socket 15 is matched in size with the cable inner core 1 of the coaxial cable, and the cable inner core 1 and the blind hole 20 on the inner core socket 15 are tightly matched by means of pulse strong magnetic field shrinkage processing. Preferably, the diameter of the cable inner core 1 is 19 mm, the diameter of the inner core socket 15 is preferably 22 mm, and the height is preferably 70 mm, and the diameter of the blind hole 20 is preferably 20 mm, and the depth is preferably 40 mm.

[0023] The outer core socket 4 is a ring structure, which includes an inner ring body 5 and an outer ring body 6, the outer ring body 6 is fixed on the inner ring body 5, the center axis length of the inner ring body 5 is greater than that of the outer ring body 6, the inner ring body 5 is a hollow metal cylinder, and the outer ring body 6 is a solid metal cylinder.

[0024] Preferably, the size of the inner ring body 5 is: inner diameter 28 mm, outer diameter 32 mm, height 90 mm, and the size of the outer ring body 6 is: outer diameter 42 mm, height 10 mm.

[0025] In this embodiment, the inner ring body 5 is internally laid with the cable inner core 1 and the inner core insulation layer 2, and the outer surface of the inner ring body 5 is coated with the cable outer core 3, the wires of the cable outer core 3 are uniformly coated on the circumference of one end of the inner ring body 5, and the cable outer core 3 is properly welded with the inner ring body 5, after the cable outer core 3 is coated on the inner ring body 5, an external force is applied by using the outer core sleeve 19 to shrink, so that the cable outer core 3 is in close contact with the inner ring body 5.

[0026] The inner ring body 5 is detachably connected with the outer core connecting seat 9, the outer core connecting seat 9 is in abutting connection with the outer ring body 6, the other end of the inner ring body 5 is sleeved with the outer core sleeve 19, and the outer core sleeve 19 is in abutting connection with the outer ring body 6. The outer core sleeve 19 is preferably made of metal material and is a non-magnetic material such as stainless steel, which has a certain plasticity. Preferably, the size of the outer core sleeve 19 is: inner diameter 40 mm, outer diameter 44 mm.

[0027] The inner core connecting seat 12 includes an inner core first connecting seat 13 and an inner core second connecting seat 14, the inner core first connecting seat 13 and the inner core second connecting seat 14 are provided with an inner core seat assembly hole 16, the inner core seat assembly hole 16 is provided with an inner core seat connecting bolt, and the inner core first connecting seat 13 and the inner core second connecting seat 14 are detachably connected by the inner core connecting bolt.

[0028] The inner core first connecting seat 13 and the inner core second connecting seat 14 are preferably fan-shaped blocks less than half a circle, the side surface of the inner core first connecting seat 13 and the inner core second connecting seat 14 press the inner core socket 15 through bolts, and the bottom surface is connected with the target conductive metal plate through bolts, which is beneficial to the connection of the cable inner core 1 and the target metal plate.

[0029] The outer core connecting seat 9 comprises an outer core first connecting seat 7 and an outer core second connecting seat 8, both of which are provided with an outer core seat assembly hole 21, and the outer core connecting bolt is arranged in the outer core seat assembly hole 21, and the outer core first connecting seat 7 and the outer core second connecting seat 8 are detachably connected through the outer core connecting bolt.

[0030] The inner core first connecting seat 13, the inner core second connecting seat 14, the outer core first connecting seat 7 and the outer core second connecting seat 8 are all fan-shaped blocks, which have the functions of current conduction and fixation, and can withstand the electromagnetic force generated by the hundred-kilovolt pulse large current.

[0031] The center position of the outer core first connecting seat 7 and the outer core second connecting seat 8 is provided with a cable through hole 18, and the cable through hole 18 is detachably connected with the outer core socket 4.

[0032] The inner core first connecting seat 13 or the inner core second connecting seat 14 is provided with a fixed lug 10, the outer core first connecting seat 7 or the outer core second connecting seat 8 is provided with a fixed lug 10, and the fixed lug 10 is provided with a fixed hole 11.

[0033] The inner core connecting seat 12 and the outer core connecting seat 9 are both made of metal conductive material.

[0034] In the embodiment, the inner core first connecting seat 13, the inner core second connecting seat 14, the inner core socket 15, the outer core first connecting seat 7, the outer core second connecting seat 8 and the outer core socket 4 are all selected from materials with good conductivity, non-magnetic permeability and certain mechanical strength, and preferably are red copper, brass, copper-chromium alloy, aluminum, aluminum alloy and stainless steel.

[0035] In the embodiment, the size of the inner core first connecting seat 13 and the inner core second connecting seat 14 is respectively: an outer diameter of 66mm, a height of 35mm, a side surface through hole number of 4, a diameter of 6.2mm, a bottom surface through hole number of 2, a diameter of 6.2mm, and a lower milling of 2mm of the butt surface.

[0036] The size of the outer core first connecting seat 7 and the outer core second connecting seat 8 is respectively: an outer diameter of 90mm, a height of 35mm, a side surface through hole number of 4, a diameter of 6.2mm, a bottom surface through hole number of 2, a diameter of 6.2mm, and a lower filing of 3mm of the butt surface.

[0037] The application discloses a large-current coaxial cable connecting device, which adopts an inner core socket, can firmly and tightly connect the inner core socket and the inner core soft wire of the coaxial cable together, increases the structural strength, reduces the contact resistance, sets an insulating sleeve between the inner core connecting seat and the outer core connecting seat, can resist the strong electromagnetic force generated by the cable electrification, restricts the cable inner core soft wire in the sleeve, avoids the bending deformation of the cable inner core, and further, the inner core connecting seat and the outer core connecting seat adopt the connecting mode of the bolt and the corresponding plug, can conveniently connect the inner core and the outer core of the coaxial cable with the target metal plate respectively, can resist the cable bending moment and the electromagnetic force during electrification, and the bolt position and size are flexible and variable.

[0038] The technical means disclosed in the application scheme is not limited to the technical means disclosed in the above-mentioned embodiments, and includes the technical scheme composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the art, some improvements and refinements can be made without departing from the principles of the application, and these improvements and refinements are also considered to be within the protection scope of the application.

Claims

1. A high current coaxial cable connection device comprising an inner core connection seat (12) and an outer core connection seat (9), characterized in that: The inner core connecting seat (12) and the outer core connecting seat (9) are both made of metal conductive material, the inner core connecting seat (12) is provided with an inner core socket (15) therein, one end of the inner core socket (15) is fixedly connected with the inner core connecting seat (12), the other end of the inner core socket (15) is provided with a blind hole (20), the outer core connecting seat (9) is fixedly provided with an outer core socket (4) therein, one end of the outer core socket (4) is fixedly connected with the outer core connecting seat (9), the other end of the outer core socket (4) is provided with an outer core sleeve (19), an outer core cable insertion opening is arranged between the outer core sleeve (19) and the outer core socket (4), the inner core connecting seat (12) and the outer core connecting seat (9) are fixedly provided with an insulating sleeve (17) therebetween, one end of the insulating sleeve (17) is abuttingly connected with the inner core connecting seat (12), the other end of the insulating sleeve (17) is abuttingly connected with the outer core connecting seat (9); the inner core socket (15) is a solid metal cylinder, the blind hole (20) is provided with a cable inner core (1), the cable inner core (1) is tightly connected with the blind hole (20) through pulse strong magnetic field tightness processing; The outer core socket (4) is in ring structure, the ring structure comprises an inner ring body (5) and an outer ring body (6), the outer ring body (6) is fixed on the inner ring body (5), the length of the central axis of the inner ring body (5) is greater than the length of the central axis of the outer ring body (6), the inner ring body (5) is a hollow metal cylinder, the outer ring body (6) is a solid metal cylinder; One end of the inner ring body (5) is fixedly and detachably connected with the outer core connecting seat (9), the outer core connecting seat (9) is abuttingly connected with the outer ring body (6), the other end of the inner ring body (5) is sleeved with an outer core sleeve (19), the outer core sleeve (19) is abuttingly connected with the outer ring body (6); The inner core connecting seat (12) comprises an inner core first connecting seat (13) and an inner core second connecting seat (14), the inner core first connecting seat (13) and the inner core second connecting seat (14) are both provided with an inner core seat assembly hole (16) therein, the inner core seat assembly hole (16) is provided with an inner core seat connecting bolt therein, the inner core first connecting seat (13) and the inner core second connecting seat (14) are detachably connected through the inner core connecting bolt; The outer core connecting seat (9) comprises an outer core first connecting seat (7) and an outer core second connecting seat (8), the outer core first connecting seat (7) and the outer core second connecting seat (8) are both provided with an outer core seat assembly hole (21) therein, the outer core seat assembly hole (21) is provided with an outer core connecting bolt therein, the outer core first connecting seat (7) and the outer core second connecting seat (8) are detachably connected through the outer core connecting bolt; The inner core first connecting seat (13), the inner core second connecting seat (14), the outer core first connecting seat (7) and the outer core second connecting seat (8) are all fan-shaped blocks; the side surface of the inner core first connecting seat (13) and the inner core second connecting seat (14) press the inner core socket (15) through bolts, and the bottom surface is connected with the target conductive metal plate through bolts, which is beneficial to the connection between the cable inner core (1) and the target metal plate; The fan-shaped block has the functions of current conduction and fixation, and can bear electromagnetic force generated by a hundred-kilo-ampere-level pulse large current.

2. The high current coaxial cable connection apparatus of claim 1, wherein: The center positions of the outer core first connecting seat (7) and the outer core second connecting seat (8) are provided with cable through holes (18), and the cable through holes (18) are detachably connected with the outer core socket (4).

3. The high current coaxial cable connection apparatus of claim 1, wherein: The inner core first connecting seat (13) or the inner core second connecting seat (14) is provided with a fixed ear (10), the outer core first connecting seat (7) or the outer core second connecting seat (8) is provided with a fixed ear (10), and the fixed ear (10) is provided with a fixed hole (11).

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