阅读说明：本技术 一种大功率射频同轴继电器的散热机构 (Heat dissipation mechanism of high-power radio frequency coaxial relay ) 是由 孙绍强 操基德 杨倩 周维禹 于 2020-07-16 设计创作，主要内容包括：本发明公开了一种大功率射频同轴继电器的散热机构,包括有长方体结构的外罩,外罩的顶端连接有D型连接器,外罩的底端连接有多个N型射频连接器,外罩内设置有控制电路板、电磁系统和射频系统；射频系统长方体射频腔体的侧壁和底面均与外罩的内壁接触导热,外罩的侧板上从上往下设置有多个平行设置的导热沟槽结构,从而增加了散热面积,从而降低了射频同轴继电器的热平衡温度,提升了射频功率传输能力,满足了射频传输平均功率最小为0.7GHz(1500W)、8GHz(350W)的要求。(The invention discloses a heat dissipation mechanism of a high-power radio frequency coaxial relay, which comprises an outer cover with a cuboid structure, wherein the top end of the outer cover is connected with a D-shaped connector, the bottom end of the outer cover is connected with a plurality of N-shaped radio frequency connectors, and a control circuit board, an electromagnetic system and a radio frequency system are arranged in the outer cover; the side wall and the bottom surface of the cuboid radio frequency cavity of the radio frequency system are in contact heat conduction with the inner wall of the outer cover, and the side plate of the outer cover is provided with a plurality of heat conduction groove structures which are arranged in parallel from top to bottom, so that the heat dissipation area is increased, the heat balance temperature of the radio frequency coaxial relay is reduced, the radio frequency power transmission capacity is improved, and the requirements that the average power of radio frequency transmission is 0.7GHz (1500W) and 8GHz (350W) at minimum are met.)

1. A heat dissipation mechanism of a high-power radio frequency coaxial relay is characterized in that: the electromagnetic radio frequency connector comprises an outer cover with a cuboid structure, wherein the top end of the outer cover is connected with a D-type connector, the bottom end of the outer cover is connected with a plurality of N-type radio frequency connectors, and a control circuit board, an electromagnetic system and a radio frequency system are arranged in the outer cover; the D-type connector supplies power to a coil of the electromagnetic system through the control circuit board, the radio frequency system comprises a radio frequency cavity with a cuboid structure, a plurality of push rods arranged at the top end of the radio frequency cavity, radio frequency reeds sleeved and fixed on each push rod, a plurality of outer conductors connected to the bottom end of the radio frequency cavity, and inner conductors arranged in each outer conductor, wherein one inner conductor is an input end inner conductor, the rest are output end inner conductors, the bottom end of the radio frequency cavity is supported on the inner bottom surface of the outer cover, four side walls of the radio frequency cavity are tightly attached to the inner side wall of the outer cover, a plurality of heat conduction groove structures arranged in parallel are arranged on side plates of the outer cover from top to bottom, the inner conductors in the outer conductors are connected with corresponding N-type radio frequency connectors, and the inner ends of the radio frequency reeds are positioned right above the input end inner conductors, the outer end of each radio frequency reed is positioned right above the inner conductor of the corresponding output end.

2. The heat dissipation mechanism of the high-power radio-frequency coaxial relay according to claim 1, wherein: every outer conductor in all be provided with the mounting hole that link up from top to bottom, one of them outer conductor and radio frequency cavity are coaxial, six outer conductors are located the periphery of one of them outer conductor in addition, all are fixed with the profile of tooth circle in every mounting hole, the inner circle of every profile of tooth circle all is fixed with the insulator, the top of every inner conductor is followed and is up passed corresponding insulator and stretch into in the radio frequency cavity, the inner circle of every profile of tooth circle be the ring gear structure, the outer lane of every insulator is the ring gear structure, insulator and the spline connection structure of the profile of tooth circle for the meshing tooth that corresponds, the inner circle of every insulator is provided with the straight line annular knurl, its outer wall of part of inner conductor suit in the insulator be the straight line annular knurl structure, inner conductor and the insulator that corresponds be the spline connection structure of straight line annular knurl.

3. The heat dissipation mechanism of the high-power radio-frequency coaxial relay according to claim 1, wherein: the heat dissipation groove structure is arranged on the side plate with the long edge at the top of the outer cover.

4. The heat dissipation mechanism of the high-power radio-frequency coaxial relay according to claim 1, wherein: the outer cover is an aluminum alloy outer cover, and the radio frequency cavity is a cavity with nickel plated on the surface of aluminum alloy.

5. The heat dissipation mechanism of the high-power radio-frequency coaxial relay according to claim 1, wherein: the push rod is a polytetrafluoroethylene push rod, the outer conductor is an outer conductor with a brass surface plated with nickel, the inner conductor is an inner conductor with a beryllium bronze surface plated with hard gold, and the radio-frequency reed is a radio-frequency reed with a beryllium bronze surface plated with hard gold.

6. The heat dissipation mechanism of the high-power radio-frequency coaxial relay according to claim 2, wherein: the tooth-shaped ring is a tooth-shaped ring with a pure copper surface plated with silver, and the insulator is a polytetrafluoroethylene insulator.

Technical Field

The invention relates to the field of radio frequency coaxial relays, in particular to a heat dissipation mechanism of a high-power radio frequency coaxial relay.

Background

Radio frequency coaxial relay radio frequency transmission channel comprises circular coaxial transmission line and rectangle coaxial transmission line, when its radio frequency signal power that passes through is great, because energy loss, can produce more heat, the heat passes through heat-conducting component to external transmission, finally reach thermal balance, when heat production speed is greater than the radiating rate, the thermal balance temperature is high, on the contrary, the thermal balance temperature is low, there is insulating support material on the transmission line, when the thermal balance temperature surpassed its heat-resisting temperature, can make the material performance decline, the loss increases, the unable transmission of energy, the final inefficacy of product.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a heat dissipation mechanism of a high-power radio frequency coaxial relay, so that an outer cover has the functions of protection and heat dissipation, and the heat dissipation capability of the high-power radio frequency coaxial relay is improved, thereby reducing the heat balance temperature of the radio frequency coaxial relay and improving the radio frequency power transmission capability.

The technical scheme of the invention is as follows:

a heat dissipation mechanism of a high-power radio frequency coaxial relay comprises an outer cover with a cuboid structure, wherein the top end of the outer cover is connected with a D-shaped connector, the bottom end of the outer cover is connected with a plurality of N-shaped radio frequency connectors, and a control circuit board, an electromagnetic system and a radio frequency system are arranged in the outer cover; the D-type connector supplies power to a coil of the electromagnetic system through the control circuit board, the radio frequency system comprises a radio frequency cavity with a cuboid structure, a plurality of push rods arranged at the top end of the radio frequency cavity, radio frequency reeds sleeved and fixed on each push rod, a plurality of outer conductors connected to the bottom end of the radio frequency cavity, and inner conductors arranged in each outer conductor, wherein one inner conductor is an input end inner conductor, the rest are output end inner conductors, the bottom end of the radio frequency cavity is supported on the inner bottom surface of the outer cover, four side walls of the radio frequency cavity are tightly attached to the inner side wall of the outer cover, a plurality of heat conduction groove structures arranged in parallel are arranged on side plates of the outer cover from top to bottom, the inner conductors in the outer conductors are connected with corresponding N-type radio frequency connectors, and the inner ends of the radio frequency reeds are positioned right above the input end inner conductors, the outer end of each radio frequency reed is positioned right above the inner conductor of the corresponding output end.

Every outer conductor in all be provided with the mounting hole that link up from top to bottom, one of them outer conductor and radio frequency cavity are coaxial, six outer conductors are located the periphery of one of them outer conductor in addition, all are fixed with the profile of tooth circle in every mounting hole, the inner circle of every profile of tooth circle all is fixed with the insulator, the top of every inner conductor is followed and is up passed corresponding insulator and stretch into in the radio frequency cavity, the inner circle of every profile of tooth circle be the ring gear structure, the outer lane of every insulator is the ring gear structure, insulator and the spline connection structure of the profile of tooth circle for the meshing tooth that corresponds, the inner circle of every insulator is provided with the straight line annular knurl, its outer wall of part of inner conductor suit in the insulator be the straight line annular knurl structure, inner conductor and the insulator that corresponds be the spline connection structure of straight line annular knurl.

The heat dissipation groove structure is arranged on the side plate with the long edge at the top of the outer cover.

The outer cover is an aluminum alloy outer cover, and the radio frequency cavity is a cavity with nickel plated on the surface of aluminum alloy.

The push rod is a polytetrafluoroethylene push rod, the outer conductor is an outer conductor with a brass surface plated with nickel, the inner conductor is an inner conductor with a beryllium bronze surface plated with hard gold, and the radio-frequency reed is a radio-frequency reed with a beryllium bronze surface plated with hard gold.

The tooth-shaped ring is a tooth-shaped ring with a pure copper surface plated with silver, and the insulator is a polytetrafluoroethylene insulator.

The invention has the advantages that:

the heat conduction groove structure is arranged on the outer cover, so that the heat dissipation area of the outer cover is increased, and the heat dissipation area is increased by 53%; the inner conductor and the corresponding insulator are in the spline connection structure with the straight knurling, so that the contact area of the inner conductor and the corresponding insulator is increased, the contact area of the insulator and the corresponding tooth-shaped ring is increased due to the spline connection structure with the meshing teeth, the heat dissipation area of the heat conduction of the inner conductor and the outer conductor is increased, the heat balance temperature of the radio frequency coaxial relay is reduced through the heat convection and the heat radiation of the radio frequency reed and the radio frequency cavity, the radio frequency power transmission capability is improved, and the requirements that the average power of the radio frequency transmission is 0.7GHz (1500W) and 8GHz (350W) at the minimum are met.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a cross-sectional view of a radio frequency system.

Fig. 4 is a schematic structural view of the toothed ring of the present invention.

Fig. 5 is a schematic view of the structure of the inner conductor of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the heat dissipation mechanism of the high-power radio frequency coaxial relay comprises an outer cover 1 with a cuboid structure, wherein the top end of the outer cover 1 is connected with a D-type connector 2, the bottom end of the outer cover 1 is connected with three N-type radio frequency connectors 3, and a control circuit board 4, an electromagnetic system 5 and a radio frequency system 6 are arranged in the outer cover 1; the D-type connector 2 supplies power to a coil of the electromagnetic system 5 through the control circuit board 3, the radio frequency system 6 comprises a radio frequency cavity 61 with a cuboid structure, two push rods 62 arranged at the top end of the radio frequency cavity 61, a radio frequency reed 63 sleeved and fixed on each push rod 62, three outer conductors 64 connected to the bottom end of the radio frequency cavity 61, and inner conductors 65 arranged in each outer conductor 64, wherein one inner conductor 65 is an input end inner conductor, the other two inner conductors 65 are output end inner conductors, the bottom end of the radio frequency cavity 61 is supported on the inner bottom surface of the outer cover 1, four side walls of the radio frequency cavity 61 are tightly attached to the inner side wall of the outer cover 1, a plurality of heat conduction groove structures 7 arranged in parallel are arranged on the side plate of the top of the outer cover 1, from top to bottom, and the three inner conductors 65 in the outer conductors 64 are connected with the corresponding N-type; of the three outer conductors 64, one outer conductor 64 is coaxial with the radio frequency cavity 61, the other two outer conductors 64 are symmetrical along the radial direction of the one outer conductor 64, each outer conductor 64 is internally provided with a vertically through mounting hole, each mounting hole is internally fixed with a toothed ring 66, the inner ring of each toothed ring 66 is fixedly provided with an insulator 67, the top end of each inner conductor 65 penetrates through the corresponding insulator 67 from bottom to top and extends into the radio frequency cavity 61, the inner ends of two radio frequency reeds 63 are positioned right above the inner conductor of the input end, the outer end of each radio frequency reed 63 is positioned right above the inner conductor of the corresponding output end, the inner ring of each toothed ring 66 is of a gear ring structure, the outer ring of each insulator 67 is of a gear ring structure, the insulator 67 and the corresponding toothed ring 66 are of a splined connection structure of meshing teeth, the inner ring of each insulator 67 is provided with straight knurling, the outer wall of the part of the inner conductor 65 sleeved in the insulator 67 is of a straight knurling structure 68, the inner conductor 65 and the corresponding insulator 67 are in a spline connection structure with straight knurling; the coil of the electromagnetic system is powered on, the push shaft of the electromagnetic system pushes the push rods 62 to move downwards, each push rod 62 drives the corresponding radio frequency reed 63 to move downwards, and the radio frequency reed 63 is connected with the input end inner conductor and the output end inner conductor at two ends so as to conduct a radio frequency channel.

The outer cover 1 is an aluminum alloy outer cover, the radio frequency cavity 61 is a nickel-plated aluminum alloy surface cavity, the push rod 62 is a polytetrafluoroethylene push rod, the radio frequency reed 63 is a beryllium bronze surface hard gold-plated radio frequency reed, the outer conductor 64 is a brass surface nickel-plated outer conductor, the inner conductor 65 is a beryllium bronze surface hard gold-plated inner conductor, the toothed ring 66 is a pure copper surface silver-plated toothed ring, and the insulator 67 is a polytetrafluoroethylene insulator.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.