A high-power waveguide coaxial water-cooled load

Abstract

The present invention discloses a high-power waveguide coaxial water-cooled load, comprising a waveguide interface, a coaxial interface, a coaxial power divider, a plurality of energy absorbers and a water-cooling system connected in sequence, the waveguide coaxial water-cooled load also comprises a boss, a first connector and a second connector, the boss comprises a first section and a second section connected, the first section is located in the waveguide interface, the second section extends into the coaxial interface, the first connector is arranged in the coaxial interface, the first end of the first connector is fixedly connected to the second section of the boss; the second connector is arranged in the coaxial power divider and connected to the coaxial power divider, and an opening is provided at one end facing the first connector, the second end of the first connector is inserted into the second connector through the opening, and there is a gap between the inner wall surfaces of the first connector and the second connector. The coaxial power divider of the waveguide coaxial water-cooled load described in the embodiment of the present application evenly distributes the output, the power absorbed by the energy absorber is equal, the energy absorber works normally and is not easily damaged.

Description

Technical Field

[0001] The invention relates to the field of radio frequency wireless communications, and in particular to a high-power waveguide coaxial water-cooled load. Background Art

[0002] At present, high-power RF or microwave waveguide loads mainly include dry loads and water loads. Waveguide dry loads are generally realized by waveguide feeders, using ferrites and other materials as microwave absorbers, and the power they withstand is generally tens of watts to hundreds of watts. Traditional waveguide water loads use water as the absorption medium for microwave energy, and introduce water into the waveguide to directly absorb microwave energy. The water container is not easy to make into a matching shape with a small reflection coefficient, and the existence of the water container limits the absorption power of the water load, and the power it withstands is generally tens of millions to tens of kilowatts. In the case of ultra-high power, and in the case of special waveguide transmission modes, the power of traditional waveguide loads is not easy to reach 300KW, and the matching performance is poor and the reflection coefficient is large.

[0003] The utility model patent with publication number CN211125990U discloses a high-power waveguide coaxial water load. The input port of the waveguide coaxial water load is an L-shaped waveguide port, which is converted into a coaxial port by a waveguide coaxial conversion device. The coaxial port is connected to a one-to-six-way coaxial power divider. The output end of the coaxial power divider is connected to six energy absorbers. The flowing water cools the six energy absorbers respectively.

[0004] The L-type waveguide conversion coaxial adopts probe coupling excitation. After the waveguide coaxial conversion device, the propagation mode TE10 (electromagnetic wave in a standard rectangular waveguide tube with a magnetic field component but no electric field component along the propagation direction) mode of the rectangular waveguide is transformed into the TEM (transverse electromagnetic mode, an electromagnetic wave mode in which the electric field and magnetic field of the electromagnetic wave are both on a plane perpendicular to the propagation direction) mode of the coaxial structure. Figure 1 This is a cross-sectional diagram of the electric field distribution of a high-power waveguide coaxial water load in the prior art. The color depth in the figure represents the electric field strength V / m (volt per meter), and the arrow represents the direction of the electric field. Figure 1 As shown, the electric field strength of the upper part of the first column facing the waveguide port is significantly greater than that of the lower part, resulting in uneven distribution of output. Due to the uneven field strength of the first column at the waveguide coaxial conversion, the signal is divided into six signal outputs through a one-to-six-way coaxial power divider, and the insertion loss of each output end is greatly different, that is, the power absorbed by the six energy absorbers is not equal, which can cause the energy absorber to work overload or even burn out.

[0005] Therefore, the above-mentioned prior art has at least the following technical problems: in the prior art, due to the uneven field strength at the waveguide coaxial conversion, the output is unevenly distributed, and the power absorbed by the energy absorber is unequal, causing the energy absorber to work overload or even burn out. Summary of the invention

[0006] The embodiment of the present application provides a high-power waveguide coaxial water-cooled load, thereby solving the technical problem in the prior art that the uneven field strength at the waveguide coaxial conversion causes uneven output distribution, unequal powers absorbed by the energy absorber, and causes the energy absorber to overload or even burn out.

[0007] In order to solve the above technical problems, the embodiment of the present application provides a high-power waveguide coaxial water-cooled load, wherein the waveguide coaxial water-cooled load comprises a waveguide interface, a coaxial interface, a coaxial power divider, a plurality of energy absorbers and a water cooling system for absorbing the energy of the energy absorbers connected in sequence, and the waveguide coaxial water-cooled load further comprises:

[0008] The boss comprises a first section and a second section connected to each other, wherein the first section is located in the waveguide interface, and the second section extends into the coaxial interface,

[0009] A first connector is disposed in the coaxial interface, and a first end of the first connector is fixedly connected to the second section of the boss;

[0010] The second connector is arranged in the coaxial power divider and connected to the coaxial power divider, and an opening is provided at one end facing the first connector, the second end of the first connector is inserted into the second connector through the opening, and there is a gap between the inner wall surfaces of the first connector and the second connector.

[0011] Furthermore, the waveguide interface includes a waveguide port and a waveguide port body, the coaxial interface includes a coaxial port and a coaxial port body, the waveguide port body is connected to the coaxial port, and the coaxial port body is connected to the coaxial power divider.

[0012] Further, the first section is a plurality of steps, and the plurality of steps gradually rise from the waveguide interface toward the coaxial interface and are aligned with the waveguide port; the bottom surface of the step is fixed on the inner wall surface of the waveguide port body, and the highest step is located at the coaxial port;

[0013] The second section is cylindrical, and the second section is coaxially arranged with the coaxial port.

[0014] Furthermore, the first connector is coaxially arranged with the coaxial port, and the first connector comprises two sections of first metal cylinders whose diameters gradually decrease from the coaxial interface to the coaxial power divider, and the second section is inserted into the first metal cylinder with a larger diameter and fixedly connected;

[0015] The second connecting body is a hollow second metal cylinder, and the second connecting body is fixed in the coaxial power divider; the first metal cylinder with a smaller diameter is inserted into the second metal cylinder.

[0016] Furthermore, a cover plate is provided at one end of the coaxial power divider facing the energy absorber, a plurality of blocks are provided at equal angles in the coaxial power divider, and the projections of the blocks on the cover plate form a circle; the inner ends of the blocks are respectively fixedly connected to the second connectors, and the outer ends of the blocks are respectively connected to third connectors, the third connectors are connected to the connectors in one-to-one correspondence, and the connectors are connected to the energy absorber in one-to-one correspondence. Furthermore, the second connector is fixedly connected to the cover plate by bolts.

[0017] Further, the water cooling system includes a water inlet and a water outlet, each energy absorber includes a first inner conductor and a hollow cavity arranged in the first inner conductor, one end of the first inner conductor close to the coaxial power divider is closed, and the other end is connected to the water outlet through a first water outlet pipe, one end of the hollow cavity close to the coaxial power divider is connected to the first inner conductor, and the other end is connected to the water inlet through a first water inlet pipe; the water cooling system also includes:

[0018] A first cooling plate is arranged on the outer wall surface of the waveguide port body and corresponds to the inner and outer sides of the wall surface of the waveguide port body separated by the boss, a first cooling pipe is arranged in the first cooling plate, one end of the first cooling pipe is connected to the water inlet through a second water inlet pipe, and the other end of the first cooling pipe is connected to the water outlet through a second water outlet pipe;

[0019] A second cooling plate is arranged on the outer surface of the cover plate; one end of the second cooling plate is connected to the water inlet through a third water inlet pipe, a second cooling pipe is arranged in the second cooling plate, one end of the second cooling pipe is connected to the water inlet through the third water inlet pipe, and the other end of the second cooling pipe is connected to the water outlet through a third water outlet pipe.

[0020] Furthermore, the first cooling tube and the second cooling tube are both S-shaped tubes.

[0021] Further, the water inlet is connected to the first water distributor through the main water inlet pipe in sequence, and the first water distributor is connected to the main water inlet pipe, the second water inlet pipe and the third water inlet pipe respectively;

[0022] The main water inlet pipe is connected one by one with a plurality of the first water inlet pipes through the second water distributor;

[0023] A plurality of the first water outlet pipes are connected to the main water outlet pipe through the third water distributor;

[0024] The main water outlet pipe, the second water outlet pipe and the third water outlet pipe are connected to the main water outlet pipe through the first water distributor, and the main water outlet pipe is connected to the water outlet.

[0025] Furthermore, the waveguide coaxial water-cooling load also includes a temperature control system, and the temperature control system includes:

[0026] a first temperature sensor, arranged on the main water inlet pipe, to collect inlet temperature information of cooling water flowing into the energy absorber;

[0027] A second temperature sensor is arranged on the main water outlet pipe to collect the outlet temperature information of the cooling water flowing out of the energy absorber in real time;

[0028] A flow sensor is arranged on the main water outlet pipe to collect flow information of cooling water flowing out of the energy absorber in real time;

[0029] A processor, whose input end is respectively connected to the first temperature sensor, the second temperature sensor and the flow sensor to receive the inlet temperature information, the outlet temperature information and the flow information, and controls the input power of the waveguide coaxial water-cooled load according to the inlet temperature information, the outlet temperature information and the flow information.

[0030] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0031] (1) The average power of the waveguide coaxial water-cooled load described in the embodiment of the present application can reach 300KW;

[0032] (2) The coaxial power divider of the waveguide coaxial water-cooled load described in the embodiment of the present application evenly distributes the output, the power absorbed by the energy absorber is equal, the energy absorber works normally and is not easily damaged;

[0033] (3) The waveguide coaxial water-cooled load described in the embodiment of the present application can particularly meet the working frequency center point of 650MHz and the frequency band bandwidth of ±20MHz; it has a low reflection coefficient, and the return loss of the input port is better than 30dB;

[0034] (4) The temperature control system of the waveguide coaxial water-cooled load described in the embodiment of the present application can control the temperature of the waveguide water-cooled load within a reasonable range and can operate normally and continuously;

[0035] (5) The waveguide coaxial water-cooled load described in the embodiment of the present application has a simple structure, stable and reliable performance, is easy to use, and adopts a modular design, which is convenient for maintenance and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a cross-sectional diagram of the electric field distribution of a high-power waveguide coaxial water load in the prior art;

[0037] Figure 2 This is a front view of a high-power waveguide coaxial water-cooled load provided by an embodiment of the present application;

[0038] Figure 3 is a cross-sectional view of a high-power waveguide coaxial water-cooled load provided by an embodiment of the present application;

[0039] Figure 4 A high-power waveguide coaxial water-cooled load is provided in one embodiment of the present application. Figure 3 Middle AA section view;

[0040] Figure 5 is a partial cross-sectional view of a high-power waveguide coaxial water-cooled load provided by an embodiment of the present application;

[0041] Figure 6 A cross-sectional diagram of the electric field distribution of a high-power waveguide coaxial water-cooled load provided in one embodiment of the present application;

[0042] Figure 7 This is a thermal simulation diagram of a high-power waveguide coaxial water load in the prior art;

[0043] Figure 8 This is a thermal simulation diagram of a high-power waveguide coaxial water-cooled load provided by an embodiment of the present application when the first cooling plate and the second cooling plate are not provided;

[0044] Fig. 9 This is a thermal simulation diagram of a high-power waveguide coaxial water-cooled load provided by an embodiment of the present application when the first cooling plate and the second cooling plate are set and turned on;

[0045] Fig.10 It is a three-dimensional electromagnetic simulation return loss curve diagram of a high-power waveguide coaxial water-cooled load provided in one embodiment of the present application;

[0046] Fig.11 It is a three-dimensional electromagnetic simulation insertion loss curve of a high-power waveguide coaxial water load in the prior art;

[0047] Fig.12 This is a three-dimensional electromagnetic simulation insertion loss curve of a high-power waveguide coaxial water-cooled load provided in one embodiment of the present application. DETAILED DESCRIPTION

[0048] The embodiment of the present application provides a high-power waveguide coaxial water-cooled load, thereby solving the technical problem in the prior art that the uneven field strength at the waveguide coaxial conversion causes uneven output distribution, unequal powers absorbed by the energy absorber, and causes the energy absorber to overload or even burn out.

[0049] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0050] The embodiment of the present application leaves a gap between the inner wall surfaces of the first connector and the second connector, and the two are non-contact coupled, so that the signal is divided into several signals through the coaxial power divider and output evenly, the distribution loss is evenly divided, and the power absorbed by the energy absorber is equal. This effectively solves the technical problem in the prior art that the uneven field strength at the waveguide coaxial conversion causes uneven distribution output, the power absorbed by the energy absorber is unequal, and the energy absorber is overloaded or even burned.

[0051] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] Figures 2 to 5 They are respectively a main view, a cross-sectional view, and a Figure 3 AA section view and partial section view, such as Figures 2 to 5 As shown, the waveguide coaxial water-cooled load includes a waveguide interface, a coaxial interface, a coaxial power divider, a plurality of energy absorbers 500 connected in sequence, and a water cooling system for absorbing the energy of the energy absorber 500. Specifically, the waveguide interface is a rectangular waveguide, which is connected to the coaxial power divider through an axial port (i.e., the coaxial interface), and the output end of the coaxial power divider is connected to the energy absorber 500.

[0053] In this embodiment, the coaxial power divider is a one-to-six-way coaxial power divider, and an input signal with an average power of 300KW is equally divided into six signal outputs with an average power of 50KW by equal radiation and phase, and all are absorbed by the energy absorber 500 and converted into heat.

[0054] like Figures 2 to 5 As shown, the waveguide coaxial water-cooling load further includes a boss 102, a first connector 203 and a second connector 204, wherein:

[0055] The boss 102 includes a first section and a second section connected to each other, wherein the first section is fixed on the inner wall surface of the waveguide interface, and the second section extends into the coaxial interface;

[0056] The first connector 203 is disposed in the coaxial interface, and the first end of the first connector 203 is fixedly connected to the second section of the boss 102;

[0057] The second connector 204 is disposed in the coaxial power divider and is in contact with the coaxial power divider, and an opening is provided at one end (i.e., the left end) facing the first connector 203, and the second end (i.e., the right end) of the first connector 203 is inserted into the second connector 204 through the opening, and the inner wall surfaces of the first connector 203 and the second connector 204 are not in contact and have a gap.

[0058] Figure 6 This is a cross-sectional diagram of the electric field distribution of a high-power waveguide coaxial water-cooled load provided in one embodiment of the present application. The color depth in the figure represents the electric field strength V / m (volts per meter), and the arrow represents the direction of the electric field. Figure 6 It can be seen that although the electric field strength of the upper part of the first connector 203 is greater than that of the lower part, after non-contact coupling, that is, there is a gap between the inner wall surfaces of the first connector 203 and the second connector 204, the electric field strength of the upper part of the second connector 204 is almost the same as that of the lower part, so that the signal is divided into several signals through the coaxial power divider for uniform output, the distribution loss is evenly divided, and the power absorbed by the energy absorber is equal. In this embodiment, the average power of the input signal is 300KW, which is evenly divided into six signals with an average power of 50KW with equal radiation and phase, and all are absorbed by the energy absorber and converted into heat, which effectively solves the technical problem in the prior art that the uneven field strength at the waveguide coaxial conversion causes uneven distribution output, the power absorbed by the energy absorber is unequal, and the energy absorber is overloaded or even burned.

[0059] Furthermore, the waveguide interface includes a waveguide port 100 and a waveguide port body 101, the coaxial interface includes a coaxial port 200 and a coaxial port body 201, the waveguide port body 101 is coaxially connected to the coaxial port 200, and the coaxial port body 201 is coaxially connected to the coaxial power divider.

[0060] Specifically, the coaxial port 200 is welded to the right end of the waveguide port body 101, the left end of the coaxial port body 201 is fixedly connected to the coaxial port 200 by screws, and the right end of the coaxial port body 201 is fixedly connected to the cover plate 202 by screws and a sealing ring.

[0061] Further, the first section is a plurality of steps, and the plurality of steps gradually rise from the waveguide interface to the coaxial interface (from left to right) and are aligned with the waveguide port 100; the bottom surface of the steps is fixed on the inner wall surface of the waveguide port body 101, and the highest step is located at the coaxial port 200; the second section is cylindrical, and the second section is coaxially arranged with the coaxial port 200. Specifically, in this embodiment, the first section is a three-step step, and the width of each step is the same.

[0062] Furthermore, the first connector 203 is coaxially arranged with the coaxial port 200, and the first connector 203 includes two sections of first metal cylinders (metal cylinders) whose diameters gradually decrease from the coaxial interface toward the coaxial power divider, and the second section is inserted into the first metal cylinder with a larger diameter and fixedly connected through a connecting component; the second connector 204 is a hollow second metal cylinder, and the second connector 204 is fixed in the coaxial power divider; the first metal cylinder with a smaller diameter is inserted into the second metal cylinder.

[0063] Furthermore, the coaxial power divider includes a metal cover plate 202 and a plurality of connectors 207, wherein:

[0064] A cover plate 202 is provided at one end of the coaxial power divider facing the energy absorber 500, and a plurality of metal blocks 206 are arranged at equal angles in the coaxial power divider, and the projections of the plurality of blocks 206 on the cover plate 202 form a circle; the inner ends of the blocks 206 are fixedly connected to the second connectors 204, respectively, and the outer ends of the blocks 206 are connected to third connectors 205, respectively, and the third connectors 205 correspond to and are connected to connectors 207 one by one, and the connectors 207 correspond to and are connected to the energy absorber 500 one by one. Specifically, the cover plate 202 is a metal circular plate, and the projections of the six blocks 206 on the cover plate 202 form a circle along the circumferential direction of the cover plate 202; the third connector 205 is a metal cylindrical body, and six through holes are provided on the cover plate 202, and the third connectors 205 pass through the through holes and are connected to the corresponding connectors 207.

[0065] Furthermore, the second connector 204 is fixedly connected to the cover plate 202 by bolts, thereby achieving a grounding short-circuit function.

[0066] Furthermore, the water cooling system includes a first water inlet pipe 903, a water inlet 600, a first water outlet pipe 1003 and a water outlet 700; each energy absorber 500 includes a first inner conductor and a hollow cavity (a second hollow cylinder made of polytetrafluoroethylene material in the present embodiment) arranged in the first inner conductor (a first hollow cylinder in the present embodiment), the first inner conductor is closed at one end close to the coaxial power divider, and the other end is connected to the water outlet 700 through the first water outlet pipe 1003, the hollow cavity is connected to the first inner conductor at one end close to the coaxial power divider, and the other end is connected to the water inlet 600 through the first water inlet pipe 903; the cooling water flows from the left end to the right end and then flows out along the inner wall of the first inner conductor of the energy absorber 500, so as to cool the first inner conductor of the energy absorber 500 by running water.

[0067] A resistance absorber for absorbing energy is attached to the outer surface of the first inner conductor of the energy absorber 500, and a first outer conductor for preventing energy from dissipating is provided on the outer sleeve of the first inner conductor. The connector 207 includes a second inner conductor and a second outer conductor provided on the outer sleeve of the second inner conductor, wherein: the left end of the first outer conductor is connected to the second outer conductor, the left end of the first inner conductor is connected to the second inner conductor, and the right end of the first outer conductor is sealed and connected to the right end of the first inner conductor to play a sealing role, so that the energy is not dissipated and is absorbed by the resistance absorber. In this embodiment, the average power of the energy absorber 500 is 50KW.

[0068] The water cooling system further comprises a first cooling plate 300 and a second cooling plate 400, wherein:

[0069] The first cooling plate 300 is arranged on the outer wall surface of the waveguide port body 101, and corresponds to the boss 102 across the wall surface of the waveguide port body 101. A first cooling pipe is arranged inside the first cooling plate 300. One end of the first cooling pipe is connected to the water inlet 600 through a second water inlet pipe 901, and the other end of the first cooling pipe is connected to the water outlet 700 through a second water outlet pipe 1001.

[0070] The second cooling plate 400 is arranged on the outer surface of the cover plate 202, and a second cooling pipe is provided in the second cooling plate 400. One end of the second cooling pipe is connected to the water inlet 600 through the third water inlet pipe 902, and the other end of the second cooling pipe is connected to the water outlet 700 through the third water outlet pipe 1002.

[0071] The first cooling plate 300 and the second cooling plate 400 respectively enhance the heat dissipation at the waveguide interface and the coaxial power divider.

[0072] Furthermore, the first cooling tube and the second cooling tube are both S-shaped tubes, which increase the heat transfer area, and the first cooling tube and the second cooling tube are both metal tubes, and the first cooling plate 300 and the second cooling plate 400 are both metal plates. Metal has a good heat transfer effect, which enhances the heat dissipation effect, thereby improving the cooling effect.

[0073] Further, the water inlet 600 is connected to the first water distributor 800 through the main water inlet pipe 900 in sequence, and the first water distributor 800 is connected to the main water inlet pipe, the second water inlet pipe 901 and the third water inlet pipe 902 respectively;

[0074] The main water inlet pipe is connected to the six first water inlet pipes 903 one by one through the second water distributor 801;

[0075] The first water outlet pipes 1003 are all connected to the main water outlet pipe 1000 through the second water distributor 801;

[0076] The main water outlet pipe 1000 , the second water outlet pipe 1001 and the third water outlet pipe 1002 are connected to the main water outlet pipe through the first water distributor 800 , and the main water outlet pipe is connected to the water outlet 700 .

[0077] Furthermore, the waveguide coaxial water-cooling load also includes a temperature control system, and the temperature control system includes:

[0078] A first temperature sensor is provided on the main water inlet pipe to collect inlet temperature information of the cooling water flowing into the energy absorber 500;

[0079] A second temperature sensor 1100 is provided on the first water outlet pipe 1003 to collect outlet temperature information of the cooling water flowing out of the energy absorber 500 in real time;

[0080] A flow sensor 1200 is provided on the main water outlet pipe 1000 to collect flow information of cooling water flowing out of the energy absorber 500 in real time;

[0081] The processor has an input end connected to the first temperature sensor, the second temperature sensor 1100 and the flow sensor 1200 respectively to receive the inlet temperature information, the outlet temperature information and the flow information, and control the input power of the waveguide coaxial water-cooled load according to the inlet temperature information, the outlet temperature information and the flow information.

[0082] Specifically, the processor has an outlet temperature threshold (for example, 100 degrees) pre-stored in it. The processor compares the outlet temperature of the cooling water with the outlet temperature threshold. When the outlet temperature of the cooling water is greater than the outlet temperature threshold, the processor reduces the input power of the waveguide coaxial water-cooling load, thereby protecting the water-cooling load.

[0083] Figure 7 This is a thermal simulation diagram of a high-power waveguide coaxial water load in the prior art. Figure 7 As shown, the ambient temperature is 293K (20℃), the continuous input average power is 300KW, and the maximum temperature of the first column reaches 449K (176℃). Although water circulation cooling is performed at the fifth flange, the first column is not in contact with the fifth flange, and the cooling effect of the first column is very limited. Since the first column cannot be cooled in time, the temperature of the entire high-power waveguide coaxial water load rises, and the standing wave ratio of the input port deteriorates or even exceeds the index range, affecting the normal operation of the entire system.

[0084] Figure 8 This is a thermal simulation diagram of a high-power waveguide coaxial water-cooled load provided in an embodiment of the present application when the first cooling plate 300 and the second cooling plate 400 are not set. The ambient temperature is 293K (20°C), the continuous input average power is 300KW, and the maximum temperature of the first connector 203 and the second connector 204 reaches 703K (430°C).

[0085] Fig. 9 This is a thermal simulation diagram of a high-power waveguide coaxial water-cooled load provided in an embodiment of the present application, when the first cooling plate 300 and the second cooling plate 400 are set and turned on, the ambient temperature is 293K (20°C), the continuous input average power is 300KW, and the maximum temperature of the first connector 203 and the second connector 204 is 350K (77°C).

[0086] Depend on Figures 7 to 9 It can be seen that the embodiment of the present application increases the heat dissipation of the waveguide coaxial water-cooled load by providing the first cooling plate 300 and the second cooling plate 400, so that the waveguide coaxial water-cooled load has a better cooling effect.

[0087] Fig.10 This is a three-dimensional electromagnetic simulation return loss curve of a high-power waveguide coaxial water-cooled load provided in an embodiment of the present application, and the return loss is better than 40dB.

[0088] Fig.11 This is a three-dimensional electromagnetic simulation insertion loss curve of a high-power waveguide coaxial water load in the prior art. Fig.11 It is known that the maximum difference between the insertion losses is 0.29dB. Fig.12 This is a three-dimensional electromagnetic simulation insertion loss curve of a high-power waveguide coaxial water-cooled load provided in an embodiment of the present application, and the maximum difference between the insertion losses is 0.07dB.

[0089] Figure 10-11 In the figure, the horizontal axis represents Frequency, and the unit is GHz; the vertical axis represents return loss, insertion loss and insertion loss, and the unit is dB. Fig.10 The numbers 1, 2, and 3 that appear in the figure are the identifiers of the three points in the figure. Figures 11-12 The numbers 1, 2, 3, 4, 5, and 6 that appear in the diagram are the identifiers of the six points in their respective graphs.

[0090] In summary, the waveguide coaxial water-cooled load described in the embodiment of the present application has at least the following beneficial effects:

[0091] (1) The average power of the waveguide coaxial water-cooled load described in the embodiment of the present application can reach 300KW;

[0092] (2) The coaxial power divider of the waveguide coaxial water-cooled load described in the embodiment of the present application evenly distributes the output, the power absorbed by the energy absorber is equal, the energy absorber works normally and is not easily damaged;

[0093] (3) The waveguide coaxial water-cooled load described in the embodiment of the present application can particularly meet the working frequency center point of 650MHz and the frequency band bandwidth of ±20MHz; it has a low reflection coefficient, and the return loss of the input port is better than 30dB;

[0094] (4) The temperature control system of the waveguide coaxial water-cooled load described in the embodiment of the present application can control the temperature of the waveguide water-cooled load within a reasonable range and can operate normally and continuously;

[0095] (5) The waveguide coaxial water-cooled load described in the embodiment of the present application has a simple structure, stable and reliable performance, is easy to use, and adopts a modular design, which is convenient for maintenance and reduces production costs.

[0096] It should be understood that although the terms "first", "second", etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are used only to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit without departing from the scope of the exemplary embodiments.

[0097] The directional terms such as outer, middle, inner, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0098] The above is only a preferred embodiment of the present application, and is not any formal or substantial limitation to the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present application, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present application, can make some changes, modifications and evolutions of the technical content disclosed above, which are equivalent embodiments of the present application; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the substantial technology of the present application are still within the scope of the technical solution of the present application.

Claims

1. A high-power waveguide coaxial water-cooled load, characterized in that: The waveguide coaxial water-cooled load comprises a waveguide interface, a coaxial interface, a coaxial power divider, a plurality of energy absorbers and a water cooling system for absorbing the energy of the energy absorbers, which are connected in sequence. The waveguide coaxial water-cooled load also comprises: The boss comprises a first section and a second section connected to each other, wherein the first section is located in the waveguide interface, and the second section extends into the coaxial interface, A first connector is disposed in the coaxial interface, and a first end of the first connector is fixedly connected to the second section of the boss; A second connector is disposed in the coaxial power divider and connected to the coaxial power divider, and an opening is provided at one end facing the first connector, and the second end of the first connector is inserted into the second connector through the opening, and a gap is provided between the inner wall surfaces of the first connector and the second connector; The waveguide interface includes a waveguide port and a waveguide port body, the coaxial interface includes a coaxial port and a coaxial port body, the waveguide port body is connected to the coaxial port, and the coaxial port body is connected to the coaxial power divider; The first section is a plurality of steps, and the plurality of steps gradually rise from the waveguide interface to the coaxial interface and are aligned with the waveguide port; the bottom surface of the step is fixed on the inner wall surface of the waveguide port body, and the highest step is located at the coaxial port; The second section is cylindrical, and the second section is coaxially arranged with the coaxial port.

2. A high-power waveguide coaxial water-cooled load as claimed in claim 1, characterized in that: The first connector is coaxially arranged with the coaxial port, and comprises two first metal cylinders with diameters gradually decreasing from the coaxial interface to the coaxial power divider, and the second section is inserted into the first metal cylinder with a larger diameter and fixedly connected; The second connecting body is a hollow second metal cylinder, and the second connecting body is fixed in the coaxial power divider; the first metal cylinder with a smaller diameter is inserted into the second metal cylinder.

3. A high-power waveguide coaxial water-cooled load as claimed in claim 1, characterized in that: A cover plate is provided at one end of the coaxial power divider facing the energy absorber, and a plurality of blocks are provided at equal angles in the coaxial power divider, and the projections of the plurality of blocks on the cover plate form a circle; the inner ends of the blocks are respectively fixedly connected to the second connectors, and the outer ends of the blocks are respectively connected to the third connectors, and the third connectors are connected to the connectors in one-to-one correspondence, and the connectors are connected to the energy absorbers in one-to-one correspondence.

4. A high-power waveguide coaxial water-cooled load as claimed in claim 3, characterized in that: The second connecting body is fixedly connected to the cover plate by bolts.

5. A high-power waveguide coaxial water-cooled load as claimed in claim 3, characterized in that: The water cooling system comprises a water inlet and a water outlet, each energy absorber comprises a first inner conductor and a hollow cavity arranged in the first inner conductor, one end of the first inner conductor close to the coaxial power divider is closed, and the other end is connected to the water outlet through a first water outlet pipe, one end of the hollow cavity close to the coaxial power divider is connected to the first inner conductor, and the other end is connected to the water inlet through a first water inlet pipe; the water cooling system also comprises: A first cooling plate is arranged on the outer wall surface of the waveguide port body and corresponds to the inner and outer sides of the wall surface of the waveguide port body separated by the boss, a first cooling pipe is arranged in the first cooling plate, one end of the first cooling pipe is connected to the water inlet through a second water inlet pipe, and the other end of the first cooling pipe is connected to the water outlet through a second water outlet pipe; A second cooling plate is arranged on the outer surface of the cover plate; one end of the second cooling plate is connected to the water inlet through a third water inlet pipe, a second cooling pipe is arranged in the second cooling plate, one end of the second cooling pipe is connected to the water inlet through the third water inlet pipe, and the other end of the second cooling pipe is connected to the water outlet through a third water outlet pipe.

6. A high-power waveguide coaxial water-cooled load as claimed in claim 5, characterized in that: The first cooling tube and the second cooling tube are both S-shaped tubes.

7. A high-power waveguide coaxial water-cooled load as claimed in claim 5, characterized in that: The water inlet is connected to the first water distributor through the main water inlet pipe in sequence, and the first water distributor is connected to the main water inlet pipe, the second water inlet pipe and the third water inlet pipe respectively; The main water inlet pipe is connected one by one with a plurality of the first water inlet pipes through a second water distributor; A plurality of the first water outlet pipes are connected to the main water outlet pipe through the third water distributor; The main water outlet pipe, the second water outlet pipe and the third water outlet pipe are connected to the main water outlet pipe through the first water distributor, and the main water outlet pipe is connected to the water outlet.

8. A high-power waveguide coaxial water-cooled load as claimed in claim 7, characterized in that: The waveguide coaxial water-cooled load also includes a temperature control system, and the temperature control system includes: a first temperature sensor, arranged on the main water inlet pipe, to collect inlet temperature information of cooling water flowing into the energy absorber; A second temperature sensor is arranged on the main water outlet pipe to collect the outlet temperature information of the cooling water flowing out of the energy absorber in real time; A flow sensor is arranged on the main water outlet pipe to collect flow information of cooling water flowing out of the energy absorber in real time; A processor, whose input end is respectively connected to the first temperature sensor, the second temperature sensor and the flow sensor to receive the inlet temperature information, the outlet temperature information and the flow information, and controls the input power of the waveguide coaxial water-cooled load according to the inlet temperature information, the outlet temperature information and the flow information.

Images