A magnetic loading material testing platform and methods of use thereof

Abstract

The application relates to a magnetic loading material test platform and a use method thereof, characterized in that the platform comprises a cold-state test platform and a hot-state test platform; the cold-state test platform comprises a cold-state measurement support, a supporting rotating disc, a measurement line and a network analyzer; the measurement line is used for forming a magnetic coupling loop around the to-be-measured magnetic loading material during measurement, and the network analyzer is used for measuring the cold-state performance of the to-be-measured magnetic loading material through the test line; the hot-state test platform comprises a coaxial cavity device, a cooling unit, an impedance transformer, an adjustable capacitor, a solid-state power source, an oscilloscope and a surface temperature test system; the application can obtain accurate cold-state test data and hot-state test data of the to-be-measured magnetic loading material, and can be widely applied in the test field.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of testing, in particular to a magnetic loading material test platform and a method thereof. BACKGROUND

[0002] The magnetic alloy ring is a new type of magnetic loading material, which has higher permeability, μ'pQf value and saturation magnetic flux density than traditional ferrite materials, and can be applied to power transformers, transmission line circuits and particle accelerator high-frequency cavities and many other industries and fields instead of traditional ferrite materials. In particular, in recent years, in the field of high-frequency cavities of the new generation of strong current synchrotron, magnetic alloy loaded high-frequency resonant cavities are used. The magnetic alloy ring mainly provides inductance and impedance in the high-frequency cavity, and the performance parameters of the magnetic alloy ring determine the working parameters of the magnetic alloy cavity. Therefore, in the process of designing the magnetic alloy cavity, the performance parameters of the magnetic alloy ring are very important reference indexes. The performance parameters of the magnetic alloy ring mainly need to be measured and tested, including cold state performance and hot state performance. The cold state performance can be measured by magnetic coupling to measure the parameters such as the merit factor μ'pQf, Q value and permeability μ of the magnetic alloy ring, and the hot state performance can be detected by power test on the magnetic ring to detect the surface temperature distribution, long-term high-power density stability and magnetic alloy ring induction voltage of the magnetic alloy ring.

[0003] At present, when the magnetic alloy material is used in many fields such as accelerators, the performance parameter indexes of the magnetic alloy ring concerned are measured and tested, but there is no special platform for complete and fast measurement and test of all performance index parameters of the magnetic alloy ring. The prior art discloses a magnetic alloy ring test method, but the test process is in a relatively simple environment, there is no professional test platform, and the measurement method is to measure the impedance of the resonance loop composed of the magnetic alloy ring and the external capacitor by using an impedance meter, the test process is relatively cumbersome, and the data of each frequency point needs to be manually adjusted. In order to study the influence of the thickness of the magnetic alloy ring strip on the performance parameters of the magnetic alloy ring, a cold test platform is also disclosed, which uses a network analyzer for measurement, however, there are the following disadvantages: 1) the whole test platform is heavy and cannot be moved, and the weight of the large-size magnetic ring is more than 80 kg, which needs the cooperation of many people to complete the normal handling work, and the end surface of the liquid-cooled magnetic alloy ring is packaged with an epoxy resin coating, which has the functions of curing the magnetic ring and protecting the magnetic alloy material from corrosion of the cooling liquid, so that the handling and transportation of the magnetic ring are difficult and the surface of the magnetic ring is easily physically damaged, thereby affecting the service life of the magnetic alloy ring; 2) the repeatability is poor, the test process is carried out on a temporary simple platform, the consistency of the medium around the measured sample cannot be guaranteed, and the interference error control of the large-batch test process of the magnetic alloy ring is poor; 3) the functional test of the magnetic alloy ring is difficult, and only long-term high-power density test can be carried out in the actual processed cavity, and since the size of the cavity is processed according to the actual needs, the magnetic alloy ring of different sizes cannot be tested at high power, and the test cost is high; 4) the influence of the test cavity in the test platform is not eliminated, therefore, the measured data is not accurate enough, and the test risk is large. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a magnetic loading material test platform and its use method, which can safely, efficiently and comprehensively test and evaluate the performance parameters of the magnetic alloy ring.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: on the one hand, a magnetic loading material test platform is provided, which comprises a cold test platform and a hot test platform;

[0006] The cold test platform comprises a cold measurement support, a support rotating disc, a measurement line and a network analyzer;

[0007] The support rotating disc for placing the magnetic loading material to be tested is rotatably arranged on the top of the cold measurement support; the measurement line is used to form a magnetic coupling loop around the magnetic loading material to be tested during measurement, and the two ends of the measurement line are connected to the network analyzer, and the network analyzer is used to measure the cold performance of the magnetic loading material to be tested through the measurement line;

[0008] The thermal state test platform comprises a coaxial cavity device, a cooling unit, an impedance transformer, an adjustable capacitor, a solid-state power source, an oscilloscope and a surface temperature test system;

[0009] The liquid inlet and the liquid outlet of the coaxial cavity device for placing the magnetic loading material to be tested are respectively connected to the liquid inlet and the liquid outlet of the cooling unit, and the cooling unit is used for cooling the coolant in the coaxial cavity device; the inner and outer diameters of the coaxial cavity device are respectively connected to the inner and outer conductors of the output end of the impedance transformer, and the impedance transformer is used for completing impedance transformation of the coaxial cavity device to realize impedance matching, and the input end of the impedance transformer is connected to the solid-state power source for feeding power to the coaxial cavity device; the inner and outer conductors of the magnetic loading material to be tested in the coaxial cavity device are connected in parallel to the adjustable capacitor for adjusting the resonant frequency of the coaxial cavity device and the oscilloscope for detecting the induced voltage of the magnetic loading material to be tested; and the surface temperature test system is used for monitoring the surface temperature of the magnetic loading material to be tested in the coaxial cavity device in real time.

[0010] Further, the test platform further comprises a hoisting device, and the hoisting device comprises a hoisting support, a motor, an electromagnetic chuck, a current controller and a power source;

[0011] The top of the hoisting support is provided with a guide rail, the motor is slidably connected to the guide rail, the output end of the motor is connected to the electromagnetic chuck, the motor is used to drive the electromagnetic chuck to move, and the electromagnetic chuck is used to adsorb the magnetic loading material to be tested.

[0012] The current controller is electrically connected to the electromagnetic chuck and the power source respectively, and the current controller is used to feed current to the electromagnetic chuck through the power source to magnetize the electromagnetic chuck, so as to realize hoisting and transportation of the magnetic loading material to be tested.

[0013] Further, the electromagnetic chuck comprises a chuck support, a metal disc and an electromagnetic coil;

[0014] The top of the chuck support is connected to the motor through a hook device, the metal disc is arranged on the chuck support, and the metal disc is provided with a plurality of electromagnetic coils for generating a static magnetic field.

[0015] Further, the thermal state test platform further comprises a directional coupler, the input end of the impedance transformer is connected to the solid-state power source through the directional coupler, and the directional coupler is used to monitor the output power of the solid-state power source in real time.

[0016] Further, the thermal state test platform further comprises a spectrum analyzer, the spectrum analyzer is connected to the forward sampling port of the directional coupler, and the spectrum analyzer is used to monitor the incident power signal in real time.

[0017] Further, the coaxial cavity device comprises a coaxial cavity support, a coaxial cavity, a speed reducer and an insulating cover plate.

[0018] The coaxial cavity is rotatably arranged on the coaxial cavity support, and a plurality of insulating support blocks for separating different to-be-tested magnetic loading materials are arranged at equal intervals in the coaxial cavity; an outer side of the coaxial cavity is provided with the insulating cover plate for sealing an open end of the coaxial cavity; a coolant is arranged in the coaxial cavity, two liquid inlet ports are arranged at a bottom of the coaxial cavity, and two liquid outlet ports are arranged at a top of the coaxial cavity; and one side of the coaxial cavity support is provided with the speed reducer for rotating the coaxial cavity and preventing the coaxial cavity from rotating by itself.

[0019] Further, the surface temperature testing system comprises thermistors and a digital display temperature measuring instrument.

[0020] The thermistors are arranged at intervals on the to-be-tested magnetic loading material, each thermistor is connected to the digital display temperature measuring instrument through a signal line, and the digital display temperature measuring instrument is used to determine the surface temperature of the to-be-tested magnetic loading material in real time according to resistance values of the thermistors.

[0021] In another aspect, a use method of a magnetic loading material testing platform is provided, comprising:

[0022] A measurement line is wound around a to-be-tested magnetic loading material on a top support rotating disc of a cold-state measurement support to form a magnetic coupling loop, two ends of the measurement line are connected to a network analyzer, and the network analyzer measures a cold-state performance of the to-be-tested magnetic loading material through the measurement line.

[0023] The to-be-tested magnetic loading material is transported into a coaxial cavity device.

[0024] A cooling unit, a solid-state power source, an adjustable capacitor and an impedance transformer are connected to the coaxial cavity, the impedance transformer performs impedance transformation of the coaxial cavity device, and the adjustable capacitor adjusts a resonant frequency of the coaxial cavity device.

[0025] The cooling unit and the solid-state power source are started to cool and feed power to the coaxial cavity for thermal state testing.

[0026] An oscilloscope detects an induced voltage of the to-be-tested magnetic loading material in the thermal state testing process.

[0027] A surface temperature testing system determines a surface temperature of the to-be-tested magnetic loading material in the thermal state testing process in real time.

[0028] Further, the use method further comprises:

[0029] Before the cold state test is carried out, the magnetic loading material to be tested is hoisted and transported to the support rotating disc of the cold state test platform through the hoisting device.

[0030] Further, the transporting of the magnetic loading material to be tested into the coaxial cavity device comprises:

[0031] Different amounts of the magnetic loading material to be tested are hoisted into the coaxial cavity through the hoisting device.

[0032] The different magnetic loading materials to be tested are separated in the coaxial cavity through the insulating support blocks, and the spacing between the magnetic loading materials to be tested is adjusted through the insulating support blocks with different thicknesses.

[0033] The present application has the following advantages due to the above technical solutions:

[0034] 1. The cold state test platform and the hot state test platform are arranged, so that the measurement error caused by the change of the test environment can be effectively reduced, the test process is standardized, the actual running state of the magnetic loading material to be tested can be simulated, and the working stability is verified.

[0035] 2. The hoisting device is arranged, so that the problem of difficult transportation of the magnetic loading material to be tested can be solved, the transportation work of the magnetic loading material to be tested can be completed by one person, and when a large amount of testing is carried out, the possibility of physical damage to the surface of the magnetic loading material to be tested can be reduced.

[0036] 3. The present application can meet the testing of magnetic loading materials to be tested with different sizes, greatly increase the safety of testing, be suitable for measuring various parameters of the magnetic loading material to be tested, provide necessary test basis for theoretical analysis, control the environment of the magnetic loading material to be tested, reduce the measurement error, and can be widely applied in the field of testing.

[0037] In summary, the present application can be widely applied in the field of testing. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a structure diagram of the hoisting device in the test platform provided by an embodiment of the present application;

[0039] Figure 2 is a structure diagram of the cold state test platform in the test platform provided by an embodiment of the present application;

[0040] Figure 3 is a connection diagram of the network analyzer of the cold state test platform in the test platform provided by an embodiment of the present application;

[0041] Figure 4 is a structure diagram of the hot state test platform in the test platform provided by an embodiment of the present application;

[0042] Figure 5 is a structural schematic diagram of a coaxial cavity of a thermal state test platform in a test platform provided by an embodiment of the present application;

[0043] Figure 6 is a structural schematic diagram of a surface temperature test system of a thermal state test platform in a test platform provided by an embodiment of the present application. DETAILED DESCRIPTION

[0044] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0045] It should be understood that the terms used herein are merely for the purpose of describing particular example embodiments and are by no means intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically indicated as such. It is also to be understood that additional or alternative steps can be employed.

[0046] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to differentiate one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first," "second," and the like are used herein to describe a variety of elements, components, regions, layers and / or sections. Therefore, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of example embodiments.

[0047] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "above," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure.

[0048] The magnetic loading material testing platform provided in this embodiment of the invention only has a certain limitation on the outer diameter of the magnetic loading material to be tested, while the inner diameter is unlimited. It is more convenient to move, and when testing the performance parameters of the magnetic alloy ring, it can eliminate the error caused by the measurement line through calibration, so as to obtain more accurate cold and hot test data of the magnetic loading material to be tested.

[0049] Example 1

[0050] like Figures 1 to 4 As shown, this embodiment provides a magnetic loading material testing platform, including a hoisting device 1, a cold testing platform 2, and a hot testing platform 3.

[0051] like Figure 1 As shown, the hoisting device 1 is used to hoist and transport the magnetic loading material 4 to be tested, such as a magnetic alloy ring.

[0052] like Figure 2 , Figure 3 As shown, the cold test platform 2 includes a cold measurement bracket 2-1, a support rotating disk 2-2, a support block 2-3, a measurement line 2-4, a calibration connector, and a network analyzer 2-5.

[0053] The top of the cold-state measurement bracket 2-1 is rotatably equipped with a support rotating disk 2-2 for placing the magnetic loading material 4 to be tested. The rotation of the support rotating disk 2-2 facilitates testing of the magnetic loading material 4 in different occasions and environments. Furthermore, when performing repeated measurements on the same magnetic loading material 4, the support rotating disk 2-2 allows for convenient measurement at different angles. Several support blocks 2-3 are spaced circumferentially around the top of the support rotating disk 2-2 to support the magnetic loading material 4. The measurement line 2-4 forms a magnetic coupling loop around the magnetic loading material 4 during measurement. Both ends of the measurement line 2-4 are connected to the network analyzer 2-5 via a coaxial interface through calibration connectors. The calibration connectors are adapters that convert both ends of the measurement line 2-4 to coaxial connectors, calibrating the test line to eliminate the influence of the test line length on the measurement results of the magnetic loading material 4. The network analyzer 2-5 is used to measure the cold-state properties of the magnetic loading material 4, such as the Q value, μ'pQf value, and permeability, through the calibrated test line.

[0054] like Figure 4As shown, the hot state test platform 3 comprises a coaxial cavity device 3-1, a cooling unit 3-2, an impedance transformer 3-3, an adjustable capacitor, a directional coupler, a solid-state power source 3-4, a spectrum analyzer, a differential probe 3-5, an oscilloscope 3-6, and a surface temperature test system 3-7, wherein the coaxial cavity device 3-1 can load different sizes and different amounts of magnetic loading materials.

[0055] The coaxial cavity device 3-1 is used to place the magnetic loading material 4 to be tested, and the liquid inlet and outlet of the coaxial cavity device 3-1 are respectively connected to the liquid inlet and outlet of the cooling unit 3-2, which is used to cool the coolant in the coaxial cavity device 3-1. The inner and outer conductors of the magnetic loading material 4 to be tested in the coaxial cavity device 3-1 are connected in parallel to the adjustable capacitor, which is used to adjust the resonant frequency of the coaxial cavity device 3-1. The inner and outer conductors of the coaxial cavity device 3-1 are respectively connected to the inner and outer conductors of the output end of the impedance transformer 3-3, which is used to complete the impedance transformation of the coaxial cavity device 3-1 to realize impedance matching. The input end of the impedance transformer 3-3 is connected to the solid-state power source 3-4 through the directional coupler via a coaxial cable, the directional coupler is used to monitor the output power of the solid-state power source 3-4 in real time, and the solid-state power source 3-4 is used to feed power to the coaxial cavity device 3-1 loaded with the magnetic loading material 4 to be tested. The forward sampling port of the directional coupler is connected to the spectrum analyzer, which is used to monitor the incident power signal in real time. The inner and outer conductors of the magnetic loading material 4 to be tested in the coaxial cavity device 3-1 are also connected to the oscilloscope 3-6 through the differential probe 3-5, which is used to detect the induced voltage of the magnetic loading material 4 to be tested. The surface temperature test system 3-7 is used to monitor the surface temperature of the magnetic loading material 4 to be tested in the coaxial cavity 3-1-2 in real time.

[0056] In a preferred embodiment, as shown in Figure 1 The hoisting device 1 comprises a hoisting support 1-1, a motor 1-2, a hook device 1-3, an electromagnetic chuck 1-4, a current controller, and an uninterruptible power supply 1-5.

[0057] The lifting support 1-1 is a frame structure fixedly connected by two vertical plates and a horizontal plate, and the connection between each vertical plate and the horizontal plate is supported and fixed by an inclined cross beam. The bottom of the lifting support 1-1 is provided with a first universal wheel 1-1-1 on both sides. The top of the lifting support 1-1 is provided with a guide rail, and a motor 1-2 is slidingly connected to the guide rail. The output end of the motor 1-2 is connected to an electromagnetic chuck 1-4 through a hook device 1-3. The motor 1-2 is used to drive the electromagnetic chuck 1-4 to move. The electromagnetic chuck 1-4 is used to adsorb the measured magnetic loading material 4 through its electrostatic coil. A current controller is electrically connected to the electromagnetic chuck 1-4 and an uninterruptible power supply 1-5, respectively. The current controller is used to feed current to the electromagnetic chuck 1-4 through the uninterruptible power supply 1-5 to magnetize it. The size of the magnetic force can be controlled by the uninterruptible power supply 1-5 to realize the lifting and transfer of the measured magnetic loading material 4.

[0058] Specifically, the hook device 1-3 connects the electromagnetic chuck 1-4 through a metal connecting column, and the metal connecting column moves up and down by rotating a hand wheel on the electromagnetic chuck 1-4.

[0059] Specifically, the two vertical plates of the lifting support 1-1 are provided with a detachable intermediate connecting section 1-1-2 to adjust the height of the lifting support 1-1.

[0060] Specifically, the electromagnetic chuck 1-4 includes a chuck support, a metal disc, and an electromagnetic coil. The metal disc can adopt a cylindrical structure. The top of the chuck support is connected to the hook device 1-3, and the chuck support is provided with a metal disc. A series of electromagnetic coils capable of generating a static magnetic field are arranged in the metal disc. The chuck support is connected to the motor 1-2 by a pulley block or welding connection, so that the electromagnetic chuck 1-4 has three-dimensional adjustable ability.

[0061] In a preferred embodiment, the cold-state measurement support 2-1 is a rectangular frame structure, and the bottom corners of the cold-state measurement support 2-1 are provided with second universal wheels 2-1-1.

[0062] In a preferred embodiment, the support rotating disc 2-2 is made of glass fiber material, and the support rotating disc 2-2 can place different sizes and different types of measured magnetic loading materials 4. The support block 2-3 is made of insulating material.

[0063] In a preferred embodiment, the measurement wire 2-4 is a coaxial single-core wire capable of being connected to a coaxial transmission line to realize quick plugging.

[0064] In a preferred embodiment, as Figure 5As shown, the coaxial cavity device 3-1 includes a coaxial cavity support 3-1-1, a coaxial cavity 3-1-2, an insulating cover plate 3-1-3 and a speed reducer 3-1-4. The coaxial cavity support 3-1-1 is a frame structure fixedly connected by a bottom plate and two side plates. The coaxial cavity 3-1-2 is rotatably arranged on the coaxial cavity support 3-1-1, and a plurality of insulating support blocks 2-3 are arranged at equal intervals in the coaxial cavity 3-1-2, which are used to separate different magnetic loading materials 4 to be tested. The outer side of the coaxial cavity 3-1-2 is provided with an insulating cover plate 3-1-3, which is used to close the open end of the coaxial cavity 3-1-2 after the magnetic loading material 4 to be tested is loaded into the coaxial cavity 3-1-2, so as to prevent the material from falling off, and to seal the liquid in the cavity in the later stage. The coaxial cavity 3-1-2 is provided with a coolant, and the bottom of the coaxial cavity 3-1-2 is provided with two liquid inlets 3-1-5, and the top of the coaxial cavity 3-1-2 is provided with two liquid outlets 3-1-6, which are used for the flow of the coolant. One side of the coaxial cavity support 3-1-1 is provided with a speed reducer 3-1-4, which is used to rotate the coaxial cavity 3-1-2 and prevent the coaxial cavity 3-1-2 from rotating by itself.

[0065] Specifically, the open end of the coaxial cavity 3-1-2 is provided with a sealing groove, and a sealing strip is arranged in the sealing groove, which is used to realize the sealing of the liquid in the coaxial cavity 3-1-2.

[0066] Specifically, the outer radius of the coaxial cavity 3-1-2 is provided with a wall-penetrating piece, which is used to introduce the temperature signal to the outside of the coaxial cavity 3-1-2 to realize temperature monitoring.

[0067] In a preferred embodiment, as shown in Figure 6 The surface temperature test system 3-7 includes a plurality of thermistors 3-6-1, signal lines and a digital display thermometer 3-6-2. A plurality of thermistors 3-6-1 are arranged at intervals on the magnetic loading material to be tested, and each thermistor 3-6-1 is connected to the digital display thermometer 3-6-2 through a wall-penetrating piece via a signal line. The digital display thermometer 3-6-2 is used to determine the surface temperature of the magnetic loading material 4 to be tested in real time according to the resistance value of each thermistor 3-6-1.

[0068] In a preferred embodiment, the cooling unit 3-2 can adopt a water cooling unit or an oil cooling unit. In actual work, cooling oil or cooling water is injected into the coaxial cavity 3-1-2 as needed, and a water cooling unit or an oil cooling unit is used according to the type of coolant injected.

[0069] Embodiment 2

[0070] The embodiment provides a magnetic loading material test method, which comprises the following steps:

[0071] 1) The magnetic loading material 4 to be tested is lifted and transported to the support rotating disc 2-2 of the cold-state test platform 2 by the lifting device 1, specifically:

[0072] 1.1) Start the uninterruptible power supply 1-5, and the current controller feeds current to the electromagnetic chuck 1-4 through the uninterruptible power supply 1-5 to magnetize the electromagnetic chuck 1-4.

[0073] 1.2) Start the motor 1-2, and the motor 1-2 drives the electromagnetic chuck 1-4 to move above the magnetic loading material 4 to be tested.

[0074] 1.3) The electromagnetic chuck 1-4 adsorbs the magnetic loading material 4 to be tested.

[0075] 1.4) The motor 1-2 drives the electromagnetic chuck 1-4 adsorbing the magnetic loading material 4 to be tested to move to the support rotating disc 2-2 of the cold-state test platform 2.

[0076] 2) The measuring line 2-4 is wound around the cold-state measuring support 2-1 to form a magnetic coupling loop around the magnetic loading material 4 to be tested on the support rotating disc 2-2, and the two ends of the measuring line 2-4 are respectively connected to one end of the calibration connector, which converts the two ends of the measuring line 2-4 into coaxial connector adapters, eliminating the influence of the length of the test line on the measurement results of the magnetic loading material 4 to be tested.

[0077] 3) The other end of the calibration connector is connected to the network analyzer 2-5 through the coaxial interface, and the network analyzer 2-5 measures the Q value, μ'pQf value, impedance and permeability of the magnetic loading material 4 to be tested through the calibrated test line.

[0078] 4) The magnetic loading material 4 to be tested is lifted and transported into the coaxial cavity 3-1-2 of the hot-state test platform 3 by the lifting device 1, specifically:

[0079] 4.1) According to the requirements, different amounts of magnetic loading material 4 to be tested are lifted into the coaxial cavity 3-1-2 by the electromagnetic chuck 1-4 of the lifting device 1.

[0080] 4.2) Different magnetic loading materials 4 to be tested are separated by insulating support blocks 2-3 in the coaxial cavity 3-1-2, and the spacing between each magnetic loading material 4 to be tested is adjusted by insulating support blocks 2-3 of different thicknesses.

[0081] 5) After all the magnetic loading materials 4 to be tested are loaded into the coaxial cavity 3-1-2, several thermistors 3-6-1 are arranged on the magnetic loading materials to be tested, and the signal lines of all the thermistors 3-6-1 are connected to the digital display temperature meter 3-6-2 through the wall penetrating piece.

[0082] 6) Seal the coaxial cavity 3-1-2 by the insulating cover plate 3-1-3, and fill the coaxial cavity 3-1-2 with the required coolant by the cooling unit 3-2.

[0083] 7) After connecting the solid-state power source 3-4, the adjustable capacitor and the impedance transformer 3-3 with the coaxial cavity 3-1-2, start the cooling unit 3-2 and the solid-state power source 3-4 to conduct the thermal state test on the coaxial cavity 3-1-2.

[0084] 8) During the thermal state test, the spectrum analyzer monitors the incident power signal in real time, the directional coupler monitors the output power of the solid-state power source 3-4 in real time, the oscilloscope 3-6 detects the induced voltage of the magnetic loaded material 4 to be tested, and the digital display thermometer 3-6-2 determines the surface temperature of the magnetic loaded material 4 to be tested in real time according to the resistance value of each thermistor 3-6-1.

[0085] The above embodiments are only used to illustrate the present application, wherein the structure, connection mode and manufacturing process of each component can be changed, and any equivalent transformation and improvement based on the technical scheme of the present application shall not be excluded from the protection scope of the present application.

Claims

1. A magnetic loading material testing platform, characterized in that, The test platform comprises a cold-state test platform and a hot-state test platform; The cold-state test platform comprises a cold-state measurement support, a support rotating disc, a measurement line and a network analyzer; The top of the cold-state measurement support is provided with the support rotating disc for placing the magnetic loaded material to be measured; The measurement line is used for forming a magnetic coupling loop around the magnetic loaded material to be measured during measurement, two ends of the measurement line are connected to the network analyzer, and the network analyzer is used for measuring the cold-state performance of the magnetic loaded material to be measured through the measurement line; The hot-state test platform comprises a coaxial cavity device, a cooling unit, an impedance transformer, an adjustable capacitor, a solid-state power source, an oscilloscope and a surface temperature test system; The liquid inlet and the liquid outlet of the coaxial cavity device for placing the magnetic loaded material to be measured are respectively connected to the liquid inlet and the liquid outlet of the cooling unit, the cooling unit is used for cooling the coolant in the coaxial cavity device; the inner and outer diameters of the coaxial cavity device are respectively connected to the inner and outer conductors of the output end of the impedance transformer, the impedance transformer is used for completing impedance transformation of the coaxial cavity device to realize impedance matching, the input end of the impedance transformer is connected to the solid-state power source for feeding power to the coaxial cavity device; the inner and outer conductors of the magnetic loaded material to be measured in the coaxial cavity device are connected in parallel to the adjustable capacitor for adjusting the resonant frequency of the coaxial cavity device and the oscilloscope for detecting the induced voltage of the magnetic loaded material to be measured; the surface temperature test system is used for monitoring the surface temperature of the magnetic loaded material to be measured in the coaxial cavity device in real time; The coaxial cavity device comprises a coaxial cavity support, a coaxial cavity, a speed reducer and an insulating cover plate; The coaxial cavity is rotatably arranged on the coaxial cavity support, a plurality of insulating support blocks for separating different magnetic loaded materials to be measured are arranged at equal intervals in the coaxial cavity, the outer side of the coaxial cavity is provided with the insulating cover plate for sealing the open end of the coaxial cavity, the coaxial cavity is provided with a coolant, the bottom of the coaxial cavity is provided with two liquid inlets, the top of the coaxial cavity is provided with two liquid outlets, and one side of the coaxial cavity support is provided with the speed reducer for rotating the coaxial cavity and preventing the coaxial cavity from rotating by itself; The surface temperature test system comprises a thermistor and a digital display temperature measuring instrument; A plurality of thermistors are arranged at intervals on the magnetic loaded material to be measured, each thermistor is connected to the digital display temperature measuring instrument through a signal line, and the digital display temperature measuring instrument is used for determining the surface temperature of the magnetic loaded material to be measured in real time according to the resistance value of each thermistor; The test platform further comprises a hoisting device, and the hoisting device comprises a hoisting support, a motor, an electromagnetic chuck, a current controller and a power supply; The top of the hoisting support is provided with a guide rail, the motor is slidably connected to the guide rail, the output end of the motor is connected to the electromagnetic chuck, the motor is used for driving the electromagnetic chuck to move, and the electromagnetic chuck is used for adsorbing the magnetic loaded material to be measured. The current controller is electrically connected with the electromagnetic chuck and the power supply respectively, and is used for feeding current to the electromagnetic chuck by the power supply to magnetize the electromagnetic chuck, so as to realize hoisting and transfer of the magnetic loading material to be tested.

2. A magnetic loading material testing platform as claimed in claim 1, wherein, The electromagnetic chuck comprises a chuck support, a metal disc and an electromagnetic coil. The top of the chuck support is connected with the motor through a hook device, the metal disc is arranged on the chuck support, and the metal disc is provided with a plurality of electromagnetic coils for generating a static magnetic field.

3. The magnetic loading material testing platform of claim 1, wherein, The thermal state test platform further comprises a directional coupler, and an input end of the impedance transformer is connected with the solid-state power source through the directional coupler.

4. A magnetic loading material testing platform as claimed in claim 3, wherein, The thermal state test platform further comprises a spectrum analyzer, and the spectrum analyzer is connected with a forward sampling port of the directional coupler.

5. A method of using a magnetic loading material testing platform according to any one of claims 1 to 4, characterized in that, Comprise: The measuring wire is wound around the cold-state measurement support on the top of the rotating disc to form a magnetic coupling loop with the magnetic loading material to be tested, and the two ends of the measuring wire are connected with a network analyzer, and the network analyzer measures the cold-state performance of the magnetic loading material to be tested through the measuring wire. The magnetic loading material to be tested is transferred into the coaxial cavity device. The cooling unit, the solid-state power source, the adjustable capacitor and the impedance transformer are connected with the coaxial cavity, the impedance transformer performs impedance transformation on the coaxial cavity device, and the adjustable capacitor adjusts the resonant frequency of the coaxial cavity device. The cooling unit and the solid-state power source are started to cool and power feed the coaxial cavity for thermal state test. An oscilloscope detects the induced voltage of the magnetic loading material to be tested in the thermal state test process. A surface temperature test system determines the surface temperature of the magnetic loading material to be tested in the thermal state test process in real time.

6. The method of claim 5, wherein, Further comprise: Before the cold-state test is performed, the magnetic loading material to be tested is hoisted and transferred to the support rotating disc of the cold-state test platform through the hoisting device.

7. The method of claim 5, wherein, The magnetic loading material to be tested is transferred into the coaxial cavity device, comprising: Different amounts of the magnetic loading material to be tested are hoisted into the coaxial cavity through the hoisting device. Different magnetic loading materials to be tested are separated by insulating support blocks in the coaxial cavity, and the spacing between each magnetic loading material to be tested is adjusted by insulating support blocks with different thicknesses.

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