CN116013590A - Liquid cooling ultra-high power flexible coaxial pulse forming wire - Google Patents
Liquid cooling ultra-high power flexible coaxial pulse forming wire Download PDFInfo
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- CN116013590A CN116013590A CN202211740755.6A CN202211740755A CN116013590A CN 116013590 A CN116013590 A CN 116013590A CN 202211740755 A CN202211740755 A CN 202211740755A CN 116013590 A CN116013590 A CN 116013590A
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Abstract
The invention discloses a liquid cooling ultrahigh-power flexible coaxial pulse forming wire, and belongs to the field of electrical equipment. The device comprises a first cooling pipeline, an inner conductor, an insulating layer, a first outer conductor, a second outer conductor and an outer protective layer which are sequentially arranged from inside to outside; the second outer conductor is provided with a plurality of, is equipped with the second cooling pipeline between two adjacent second outer conductors. The inner conductor, the first outer conductor and the second outer conductor are formed by twisting or braiding and twisting oxygen-free copper wires, can be repeatedly bent and used, meet the characteristic that the bending service life of the pulse forming wire is more than 10000 times under the bending radius of 5 times of wire diameter, simultaneously solve the problem that the traditional high-voltage pulse forming wire cannot be produced in a large length, and are provided with the first cooling pipeline and the second cooling pipeline, so that the problem that the use of the cable is difficult to be influenced due to severe heating of the cable under the condition of high current can be solved, the heat dissipation effect is better, and the problem that the normal operation is influenced due to severe heating of the pulse forming wire under the condition of the ultra-large current of more than 100kA is solved.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to a liquid-cooled ultra-high-power flexible coaxial pulse forming wire.
Background
Pulse power technology is widely applied to national defense construction and national production, one of the main directions of current development is to increase average power, and long pulse research is an important subject. The pulse forming cable is also called pulse forming wire, and is used for generating high-voltage pulse, and the simplest is that a switch is added on a coaxial cable, after the electric wire is charged, the switch breaks down, and the required pulse can be obtained on the load at the other end of the cable, however, the withstand voltage of the cable is only a few kV to tens of kV generally, if the withstand voltage is required to be higher, the pulse forming wire needs to be made of an aqueous medium or an oil medium, and the width of the pulse generated is related to the medium and the length used for the pulse forming wire.
There is a need in the market for an ultra-high power pulse forming wire that is flexible for more than 10000 times at a bend radius of 5 wire diameters while running current above 100kA, and is currently unresolved. The existing wire and cable form is difficult to solve the problem that the normal operation and use of the cable are affected due to the fact that severe heat of the cable is difficult to dissipate under the condition of ultra-large current, the operation time of the cable is short, and the use efficiency is low. Similar liquid cooling cables are developed and designed in the market, but liquid cooling is realized by adopting a simple plastic pipe or a built-in common metal spring pipe. The simple plastic tube has poor cooling effect. The common metal spring tube has good heat conductivity, but gaps can cause the cooling liquid and the contacted conductor to be mixed into a whole so as to influence the electric performance of the conductor, and the stability of the cable structure is also endangered, and meanwhile, the processing of the liquid channel of the simple spring tube structure also has a very difficult problem. The cable with the liquid cooling scheme is generally suitable for the high-current occasions of 500A-1000A and below, is difficult to meet the use requirement of the high-current occasions of 100kA or above, and can provide limited power, so that the liquid cooling super-high-power flexible coaxial pulse forming wire with better heat dissipation effect, longer running time and higher use efficiency is required.
Disclosure of Invention
In order to meet the requirements, the invention provides a liquid cooling ultrahigh-power flexible coaxial pulse forming wire, which aims to solve the technical problems related to the background technology.
The invention provides a liquid cooling ultra-high power flexible coaxial pulse forming wire, which comprises a first cooling pipeline, an inner conductor, an insulating layer, a first outer conductor, a second outer conductor and an outer protective layer which are sequentially arranged from inside to outside; the second outer conductor is provided with a plurality of second outer conductors which are uniformly arranged around the circumference of the first outer conductor, a second cooling pipeline is arranged between two adjacent second outer conductors, cooling liquid is arranged in each of the first cooling pipeline and the second cooling pipeline, and the inner conductor, the first outer conductor and the second outer conductor are formed by twisting or braiding and twisting oxygen-free copper wires.
Preferably or alternatively, the first cooling pipeline and the second cooling pipeline each comprise a high heat conduction elastic hose and a heat conduction insulating protection layer or a heat conduction electric conduction layer which is coated outside the elastic hose.
Preferably or alternatively, the inner side and the outer side of the insulating layer are provided with semiconductive shielding layers.
Preferably or alternatively, the insulating layer is made of a low dielectric constant vulcanizable flexible cured insulating material.
Preferably or alternatively, the outer sheath comprises a thermally conductive barrier layer and an outer sheath disposed outside the thermally conductive barrier layer.
Preferably or alternatively, the thermally conductive protective layer is made of copper.
Preferably or alternatively, the outer sheath is made of a flexible wear resistant material.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) The inner conductor, the first outer conductor and the second outer conductor are formed by twisting or braiding and twisting oxygen-free copper wires, compared with dielectric ceramics and glass ceramics, the composite structure has better bending resistance effect, can meet the requirement of repeated bending use, and ensures the structural stability and feasibility of repeated bending operation of the cable for more than 10000 times under the bending radius of 5 times of the cable diameter.
(2) The invention is provided with the first cooling pipeline and the second cooling pipeline, and is key to ensure that the cable can normally run and be used under the condition of 100kA super-large current and super-large power by combining a multi-cooling pipeline composite structure, the high heat conduction effect can greatly conduct heat to the cooling liquid to be taken away so as to quickly reduce the temperature during running, the current-carrying capacity is ensured, the difficult problem that the cable is difficult to be scattered when seriously heated under the condition of large current to influence the normal running and use of the cable can be solved, the heat-radiating effect is better, meanwhile, the running time is longer and the use efficiency is higher, the heat conduction and electric conduction layer is adopted outside the elastic hose to enable the cooling pipeline and the conductor to form a comprehensive conductor, the current-carrying capacity is further improved and the integral outer diameter of the pulse forming line is reduced.
(2) The first cooling pipeline and the second cooling pipeline comprise an elastic hose and a heat conduction insulating protective layer which is externally coated on the outer side of the elastic hose, and the elastic hose enables the first cooling pipeline and the second cooling pipeline to be bent, so that the heat conduction insulating protective layer plays a role in supporting and protecting.
(3) The inner side and the outer side of the insulating layer are respectively provided with a semiconductive shielding layer, and the semiconductive shielding layers on the inner side strengthen and protect the inner conductor and simultaneously play a role in homogenizing the field intensity of the inner surface of the insulating layer.
(4) The insulating layer is made of the low-dielectric-constant vulcanized flexible cured insulating material, and can meet the flexibility requirement while improving the allowable operating temperature and current-carrying capacity.
(5) The heat-conducting protective layer is made of metal copper, the heat-conducting effect is better, and the outer side of the heat-conducting protective layer is provided with the outer sheath made of the soft wear-resistant material, so that the abrasion of internal parts can be avoided.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
The reference numerals are:
a first cooling pipeline 1, an elastic hose 11, a heat conduction insulating protective layer 12,
An inner conductor 2,
An insulating layer 3,
A semiconductive shielding layer 4,
A first outer conductor 5,
A second outer conductor 6,
A second cooling pipe 7,
An outer sheath 8, a thermal conductive protective layer 81, and an outer sheath 82.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The mechanisms of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in place when the inventive product is used, or those conventionally understood by those skilled in the art, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1, the liquid-cooled high-power flexible coaxial pulse cable of the present embodiment includes a first cooling pipe 1, an inner conductor 2, an insulating layer 3, a semiconductive shielding layer 4, a first outer conductor 5, a second outer conductor 6, a second cooling pipe 7, and an outer sheath 8.
The first cooling pipeline 1 is arranged at the center of the cable, the first cooling pipeline 1 comprises an elastic hose 11, the outer side of the elastic hose 11 is extruded and coated with a layer of heat conduction insulating protective layer 12 or a heat conduction and electric conduction layer, the preferred heat conduction insulating protective layer 12 of the embodiment is the cross section shape of the elastic hose 11 and the heat conduction insulating protective layer 12 is circular ring-shaped, a containing cavity is arranged in the elastic hose 11, oil or water is filled in the containing cavity to conduct heat, the elastic hose 11 is made of a spring, the heat conduction insulating protective layer 12 is made of a high heat conduction insulating material, the high heat conduction insulating material is a conventional material known by a person skilled in the art, the elastic hose 11 enables the first cooling pipeline 1 and the second cooling pipeline 7 to be bent, the heat conduction insulating protective layer 12 plays a role of supporting and protecting, the combined multi-cooling pipeline composite structure ensures that the cable is normally operated and used under the condition of 100kA ultra-large current and ultra-large power, the high heat conduction effect can greatly conduct heat to the cooling liquid and rapidly reduce the temperature during the flow, the problem that the cable is seriously heated and influences the cable is difficult to be spread under the high current condition can be solved, the high heat conduction effect can be better, the heat dissipation effect can be better, the heat conduction effect can be better and the heat conduction effect can be used to form the outer side and the outer conductor to form a further outer diameter to the heat conducting pipeline, and the heat conducting layer can be used to be used as a pulse and has a longer overall heat conducting effect.
In a further embodiment, an inner conductor 2 is arranged on the outer side of the first cooling pipeline 1, the cross section of the inner conductor 2 is circular, the central axis of the inner conductor 2 coincides with the central axis of the first cooling pipeline 1, and the inner conductor 2 is concentrically stranded or braided and stranded outside the first cooling pipeline 1 by oxygen-free copper wires with high conductivity and is wrapped by a high-strength semi-conductive belt to form an inner core wire.
In a further embodiment, the outer side of the inner conductor 2 is provided with an insulating layer 3, the cross-section shape of the insulating layer 3 is circular, the central axis of the insulating layer 3 coincides with the central axis of the first cooling pipeline 1, a semi-conductive shielding layer 4 is arranged on the inner side of the insulating layer 3, namely between the insulating layer 3 and the inner conductor 2, the inner semi-conductive shielding layer 4 reinforces and protects the inner conductor 2, meanwhile, the field intensity effect of the inner surface of the insulating layer 3 is homogenized, the insulating layer 3 is made of a vulcanized flexible curing insulating material with a low-price electrical constant, and the insulating effect is better.
In a further embodiment, the outer side of the insulating layer 3 is also provided with a semiconductive shielding layer 4, and a first outer conductor 5 is arranged on the outer side of the semiconductive shielding layer 4 outside the insulating layer 3, the cross section of the first outer conductor 5 is in a circular ring shape, the central axis of the first outer conductor 5 coincides with the central axis of the first cooling pipeline 1, and the first outer conductor 5 is formed by twisting or braiding and twisting of oxygen-free copper wires with high conductivity.
In a further embodiment, eleven second outer conductors 6 are arranged on the outer side of the first outer conductor 5, the cross section of each second outer conductor 6 is cylindrical, eleven second outer conductors 6 are uniformly distributed around the circumference of the first outer conductor 5, an accommodating space is arranged between every two adjacent second outer conductors 6, and each second outer conductor 6 is formed by twisting or braiding and twisting oxygen-free copper wires with high conductivity.
In a further embodiment, eleven second cooling pipes 7 are further arranged on the outer side of the first outer conductor 5, the eleven second cooling pipes 7 are uniformly arranged around the circumference of the first outer conductor 5, the eleven second cooling pipes 7 are respectively arranged in the accommodating space between two adjacent second outer conductors 6, the eleven second cooling pipes 7 and the eleven second outer conductors 6 are filled with the circumferential surface on the outer side of the first outer conductor 5, the structure is more compact and saves space, the structure of the second cooling pipes 7 is consistent with that of the first cooling pipes 1, the diameter of the second cooling pipes 7 is smaller than that of the first cooling pipes 1, the diameter of the second cooling pipes 7 is the same as that of the second outer conductors 6, and cooling liquid is arranged in each of the first cooling pipes 1 and the second cooling pipes 7.
In a further embodiment, the outer sides of the second outer conductor 6 and the second cooling pipe 7 are provided with an outer protective layer 8, the outer protective layer 8 comprises a heat conductive protective layer 81 and an outer protective layer 82, the outer protective layer 82 is arranged on the outer side of the heat conductive protective layer 81, the cross-sectional shapes of the outer protective layer 82 and the heat conductive protective layer 81 are all circular, the central axes of the outer protective layer 82 and the heat conductive protective layer 81 coincide with the central axis of the first cooling pipe 1, the heat conductive protective layer 81 is made of high-elasticity alloy copper, the elasticity is good, the heat conductivity is better, the outer protective layer 82 is made of flexible wear-resistant materials, and the flexible wear-resistant materials of the embodiment are preferably rubber.
In a further embodiment, the inner conductor 2, the first outer conductor 5 and the second outer conductor 6 are formed by twisting or braiding and twisting oxygen-free copper wires, compared with dielectric ceramics and glass ceramics, the bending resistance effect is better, repeated bending use can be met, and the braiding and wrapping conductor composite structure ensures structural stability and feasibility of the cable in repeated bending operation for more than 10000 times under the bending radius of 5 times of the cable diameter.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Claims (7)
1. The liquid cooling ultra-high power flexible coaxial pulse forming wire is characterized by comprising a first cooling pipeline (1), an inner conductor (2), an insulating layer (3), a first outer conductor (5), a second outer conductor (6) and an outer protective layer (8) which are sequentially arranged from inside to outside; the second outer conductors (6) are provided with a plurality of second outer conductors (6) which are uniformly arranged around the circumference of the first outer conductor (5), a second cooling pipeline (7) is arranged between two adjacent second outer conductors (6), cooling liquid is arranged in each of the first cooling pipeline (1) and the second cooling pipeline (7), and the inner conductor (2), the first outer conductor (5) and the second outer conductor (6) are formed by twisting or braiding and twisting oxygen-free copper wires.
2. The liquid-cooled ultra-high power flexible coaxial pulse forming wire according to claim 1, wherein the first cooling pipeline (1) and the second cooling pipeline (7) comprise an elastic hose (11) and a heat-conducting insulating protective layer (12) or a heat-conducting electric-conducting layer which is externally coated on the outer side of the elastic hose (11).
3. The liquid-cooled ultra-high power flexible coaxial pulse forming wire according to claim 1, wherein the inner side and the outer side of the insulating layer (3) are provided with semi-conductive shielding layers (4).
4. The liquid cooled ultra high power flexible coaxial pulse forming wire according to claim 1, characterized in that the insulating layer (3) is made of a low dielectric constant vulcanized flexible cured insulating material.
5. The liquid cooled ultra-high power flexible coaxial pulse forming wire of claim 1, wherein the outer sheath (8) comprises a thermally conductive protective layer (81) and an outer sheath (82), the outer sheath (82) being disposed outside the thermally conductive protective layer (81).
6. A liquid cooled ultra high power flexible coaxial pulse forming wire according to claim 5, characterized in that said thermally conductive shield (81) is made of copper.
7. The liquid cooled ultra high power flexible coaxial pulse forming wire of claim 5, wherein said outer jacket (82) is made of a flexible wear resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211740755.6A CN116013590A (en) | 2022-12-31 | 2022-12-31 | Liquid cooling ultra-high power flexible coaxial pulse forming wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211740755.6A CN116013590A (en) | 2022-12-31 | 2022-12-31 | Liquid cooling ultra-high power flexible coaxial pulse forming wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116013590A true CN116013590A (en) | 2023-04-25 |
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ID=86031446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211740755.6A Pending CN116013590A (en) | 2022-12-31 | 2022-12-31 | Liquid cooling ultra-high power flexible coaxial pulse forming wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116013590A (en) |
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2022
- 2022-12-31 CN CN202211740755.6A patent/CN116013590A/en active Pending
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