CN217062468U - 6 inch high power radio frequency coaxial transmission line structure - Google Patents
6 inch high power radio frequency coaxial transmission line structure Download PDFInfo
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- CN217062468U CN217062468U CN202220918538.0U CN202220918538U CN217062468U CN 217062468 U CN217062468 U CN 217062468U CN 202220918538 U CN202220918538 U CN 202220918538U CN 217062468 U CN217062468 U CN 217062468U
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Abstract
The utility model discloses a 6-inch high-power radio frequency coaxial transmission line structure, which comprises an outer conductor, an outer conductor flange, an inner conductor plug, a ceramic insulating support, a beryllium bronze electric contact reed, a fixing bolt and the like, the outer conductor flange is respectively welded at two ends of the outer conductor pipe, the inner conductor is arranged in the outer conductor, one end of the inner conductor plug is provided with a dovetail groove for fixedly arranging a beryllium bronze electric contact reed, the other end of the inner conductor plug is subjected to diameter-changing treatment according to a simulation calculation result, the diameter-changing part of the inner conductor plug is inserted into the central hole of the insulating support, the installed plug is inserted into the inner conductor, the inner conductor plug is fixedly connected with the ceramic insulation support and then is inserted into the inner conductor, the ceramic insulation support is placed in the outer conductor groove and is fastened and connected through the outer conductor flange bolt in sequence to form the coaxial transmission line.
Description
Technical Field
The utility model relates to a radio frequency power transmission field, concretely relates to coaxial transmission line structure of 6 inches high power radio frequency.
Background
The radio frequency coaxial transmission line transmits radio frequency signals from a radio frequency source to a terminal, is widely applied to signal transmission application of broadcasting, television, radar and the like, and various radio frequency application occasions, is particularly widely applied in the field of megawatt high-power radio frequency wave heating, and is generally used as a radio frequency power source between a front stage and a final stage or output to a heating antenna. Radio frequency waves are widely applied to all fusion devices in the world as a main auxiliary heating mode, the total power level is generally as high as hundreds of kilowatts to dozens of megawatts, the working frequency is 10-200MHz, according to the difference of the total power of the system, power transmission generally needs several or more than ten coaxial transmission lines, and because the radio frequency heating system is far away from the Tokamak device, the transmission lines are long in length. At present, polytetrafluoroethylene materials are used for inner and outer conductor insulation supports of mainstream radio frequency coaxial transmission lines as inner and outer conductor support materials, and the transmission lines (transmission line insulation supports) can be ignited when the transmission lines run at high power, so that the insulation supports are damaged, the transmission lines fail, and experiments are influenced; because polytetrafluoroethylene can produce a large amount of ablation dust when striking sparks and diffuse, bring very big inconvenience for transmission line maintenance, washing, change insulating support, waste time and energy. Once the insulation is damaged, only the new support can be replaced, and the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a 6 inch high power radio frequency coaxial transmission line structure, this transmission line can solve above-mentioned transmission line stability when high power transmission and insulating support maintenance, washing convenience and reduction maintenance cost when striking sparks.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a6 inch high power RF coaxial transmission line structure, comprising:
the coaxial transmission line comprises a first outer conductor, a second outer conductor, a first outer conductor flange, a second outer conductor flange, a first inner conductor, a second inner conductor, a first inner conductor plug, a second inner conductor plug, a ceramic insulating support, a first beryllium bronze electric contact reed and a second beryllium bronze electric contact reed, wherein the first outer conductor flange and the second outer conductor flange are respectively welded at two ends of a first outer conductor pipe and a second outer conductor pipe, the first inner conductor and the second inner conductor are respectively installed inside the first outer conductor and the second outer conductor, the first inner conductor plug and the second inner conductor plug are fixedly connected with the ceramic insulating support and then are inserted into the first inner conductor and the second inner conductor, and the first inner conductor plug and the second inner conductor plug are sequentially fastened and connected with the first outer conductor flange through bolts to form the coaxial transmission line.
Furthermore, dovetail grooves are designed at one ends of the first inner conductor plug and the second inner conductor plug and used for fixedly mounting the first beryllium bronze electric contact reed and the second beryllium bronze electric contact reed, the other ends of the first inner conductor plug and the second inner conductor plug are subjected to diameter changing treatment according to simulation calculation results, the diameter changing parts of the first inner conductor plug and the second inner conductor plug are inserted into central holes of the ceramic insulating support, the mounted first inner conductor plug and the mounted second inner conductor plug are respectively inserted into the first inner conductor and the second inner conductor, and the first inner conductor plug and the mounted second inner conductor plug are tightly contacted with the first inner conductor and the second inner conductor through the first beryllium bronze electric contact reed and the second beryllium bronze electric contact reed, so that good electric contact is achieved.
Furthermore, the ceramic insulating support adopts 99% high-purity porcelain to reduce the power loss of an insulating medium during high-power transmission; meanwhile, a radio frequency compensation and creepage groove is designed on the ceramic insulating support to prolong creepage distance and improve withstand voltage of the insulating support.
Furthermore, the first inner conductor plug and the second inner conductor plug are respectively of two different structures, the first inner conductor plug and the second inner conductor plug are identical in structure with the first inner conductor plug and the second inner conductor plug, the end head of the first inner conductor plug is provided with a reducing boss, the end part of the second inner conductor plug is provided with a groove, the reducing boss of the first inner conductor plug is inserted into the center hole of the ceramic insulating support and the groove of the second inner conductor plug and fastened together through a bolt to form an integral part, the first inner conductor plug and the second inner conductor plug are respectively inserted into the first inner conductor and the second inner conductor, the ceramic insulating support is placed in the groove of the first outer conductor flange and the groove of the second outer conductor flange to fix the first inner conductor and the second inner conductor, and the inner conductors and the second outer conductor form a coaxial structure.
Further, the characteristic impedance of the coaxial transmission line structure is 50 ohms.
Has the advantages that:
the utility model discloses a transmission line structure can solve transmission line stability when high power transmission and insulating support maintain, wash convenience and reduce the maintenance cost when striking sparks.
Drawings
Fig. 1 is the structure schematic diagram of the 6-inch high-power rf coaxial transmission line of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the 6-inch high-power rf coaxial transmission line structure of the present invention includes a first outer conductor 2 and a second outer conductor 10; a first outer conductor flange 5, a second outer conductor flange 6; the inner conductor comprises a first inner conductor 1, a second inner conductor 11, a first inner conductor plug 3, a second inner conductor plug 8, a ceramic insulating support 7, a first beryllium bronze electrical contact reed 4, a second beryllium bronze electrical contact reed 9, a fixing bolt and the like. The first and second outer conductor flanges 5 and 6 are respectively welded at the ports of the first and second outer conductor pipes 2 and 10, the first and second inner conductors 1 and 11 are respectively arranged in the first and second outer conductors 2 and 10, the first and second beryllium bronze electric contact reeds 4 and 9 are respectively installed and fixed in the dovetail grooves of the first and second inner conductor plugs 3 and 8, the assembled first and second inner conductor plugs 3 and 8 are fixedly connected with the ceramic insulating support 7 through fixing bolts and then inserted in the first and second inner conductors 1 and 10, the ceramic insulating support 7 is fixed in the grooves of the first and second outer conductor flanges 5 and 6, and the first and second outer conductor flanges 5 and 6 are fastened through fixing bolts; the above processes are repeated, and the coaxial transmission line structure is formed by connection in sequence.
One end of each of the first and second inner conductor plugs 3, 8 is designed with a dovetail groove for fixedly mounting the first and second beryllium bronze electrical contact reeds 4, 9, the other end of each of the first and second inner conductor plugs 3, 8 is subjected to diameter-changing processing according to simulation calculation results, the diameter-changing parts of the first and second inner conductor plugs 3, 8 are inserted into the central holes of the ceramic insulating support 7, the mounted first and second inner conductor plugs 3, 8 are respectively inserted into the first and second inner conductors 1, 11, and the first and second beryllium bronze electrical contact reeds 4, 9 are in close contact with the first and second inner conductors 1, 11, so that good electrical contact is achieved.
Specifically, the first and second inner conductor plugs 3 and 8 are respectively of two different structures, the first and second inner conductor plugs 3 and 8 are respectively identical to the first and second inner conductors 1 and 11 in insertion part structure, the end of the first inner conductor plug 3 is provided with a reducing boss, the end of the second inner conductor plug 8 is provided with a groove, the reducing boss of the first inner conductor plug 3 is inserted into the center hole of the ceramic insulating support 7 and the groove of the second inner conductor plug 8 and is fastened together through a fixing bolt to form an integral part, the first and second inner conductor plugs 3 and 8 are respectively inserted into the first and second inner conductors 1 and 11, the ceramic insulating support 7 is placed in the grooves of the first and second outer conductor flanges 5 and 6 to fix the first and second inner conductors 1 and 11, so that the inner and outer conductors form a coaxial structure.
The ceramic insulating support 7 is made of 99% high-purity porcelain, so that power loss of an insulating medium during high-power transmission is reduced; meanwhile, a radio frequency compensation and creepage groove is designed on the ceramic insulating support 7 to prolong creepage distance and improve withstand voltage of the insulating support.
The characteristic impedance of the coaxial transmission line structure is 50 ohms.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a 6 inch high power radio frequency coaxial transmission line structure which characterized in that: the coaxial transmission line comprises a first outer conductor, a second outer conductor, a first outer conductor flange, a second outer conductor flange, a first inner conductor, a second inner conductor, a first inner conductor plug, a second inner conductor plug, a ceramic insulating support, a first beryllium bronze electric contact reed and a second beryllium bronze electric contact reed, wherein the first outer conductor flange and the second outer conductor flange are respectively welded at two ends of a first outer conductor pipe and a second outer conductor pipe, the first inner conductor and the second inner conductor are respectively installed inside the first outer conductor and the second outer conductor, the first inner conductor plug and the second inner conductor plug are fixedly connected with the ceramic insulating support and then are inserted on the first inner conductor and the second inner conductor, and the first outer conductor flange and the second outer conductor flange are sequentially fastened and connected through bolts to form the coaxial transmission line.
2. The 6-inch high-power radio frequency coaxial transmission line structure according to claim 1, wherein: the dovetail groove is designed at one end of each of the first inner conductor plug and the second inner conductor plug and used for fixedly mounting the first beryllium bronze electrical contact reed and the second beryllium bronze electrical contact reed, the other end of each of the first inner conductor plug and the second inner conductor plug is subjected to diameter changing processing according to a simulation calculation result, the diameter changing parts of the first inner conductor plug and the second inner conductor plug are inserted into the central holes of the ceramic insulation support, the mounted first inner conductor plug and the mounted second inner conductor plug are respectively inserted into the first inner conductor and the second inner conductor, and the first inner conductor plug and the mounted second inner conductor plug are in close contact with the first inner conductor and the second inner conductor through the first beryllium bronze electrical contact reed and the second beryllium bronze electrical contact reed, so that good electrical contact is achieved.
3. The 6-inch high-power radio frequency coaxial transmission line structure according to claim 1, wherein: the ceramic insulating support adopts 99% high-purity porcelain to reduce the power loss of an insulating medium during high-power transmission; meanwhile, a radio frequency compensation and creepage groove is designed on the ceramic insulating support to prolong creepage distance and improve withstand voltage of the insulating support.
4. The 6-inch high-power radio frequency coaxial transmission line structure of claim 2, wherein: the first inner conductor plug and the second inner conductor plug are respectively of two different structures, the first inner conductor plug and the second inner conductor plug are respectively identical to the inserting part structures of the first inner conductor and the second inner conductor, the end head of the first inner conductor plug is provided with a reducing boss, the end part of the second inner conductor plug is provided with a groove, the reducing boss of the first inner conductor plug is inserted into the groove of the ceramic insulating support and the groove of the second inner conductor plug, the ceramic insulating support and the second inner conductor plug are fastened together through bolts to form an integral part, the first inner conductor plug and the second inner conductor plug are respectively inserted into the first inner conductor and the second inner conductor, the ceramic insulating support is placed in the groove of the first outer conductor flange and the groove of the second outer conductor flange to fix the first inner conductor and the second inner conductor, and the outer conductors form a coaxial structure.
5. The 6-inch high-power radio frequency coaxial transmission line structure of claim 1, wherein: the characteristic impedance of the coaxial transmission line structure is 50 ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220918538.0U CN217062468U (en) | 2022-04-20 | 2022-04-20 | 6 inch high power radio frequency coaxial transmission line structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220918538.0U CN217062468U (en) | 2022-04-20 | 2022-04-20 | 6 inch high power radio frequency coaxial transmission line structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217062468U true CN217062468U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220918538.0U Active CN217062468U (en) | 2022-04-20 | 2022-04-20 | 6 inch high power radio frequency coaxial transmission line structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217062468U (en) |
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2022
- 2022-04-20 CN CN202220918538.0U patent/CN217062468U/en active Active
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