Testing device of plasma generator

Abstract

The utility model provides a testing device of a plasma generator. The testing device comprises a transparent insulating testing cylinder and two cover plate assemblies which are in sealing connection with openings in the two ends of the testing cylinder respectively. The two cover plate assemblies are provided with target mounting ports, the target mounting port of any one of the two cover plate assemblies is used for mounting a plasma generator, and the target mounting port of the other cover plate assembly is used for mounting a test electrode; the plasma generator emits plasma into the test cylinder, and plasma current is formed between the plasma generator and the test electrode based on the plasma. By using the testing device, the plasma generator can be reliably tested, and a testing result can be conveniently obtained.

Description

Technical Field

[0001] The present application relates to the field of plasma technology, and in particular to a testing device for a plasma generator. Background Art

[0002] With the development of plasma technology, plasma generators are used more and more widely.

[0003] For example, a plasma generator can be used in a nuclear fusion scenario to input plasma into a nuclear fusion reaction chamber in a nuclear fusion reaction device (such as a tokamak). Afterwards, the nuclear fusion reaction device can control the magnetic field to form a plasma current from the plasma, and then heat the plasma to the fusion reaction temperature to cause a fusion reaction. Before the plasma generator is formally applied to the nuclear fusion reaction process of a nuclear fusion reaction device, it is usually necessary to install the plasma generator on the nuclear fusion reaction device to test the ionization effect to verify whether the plasma generator can reliably provide the plasma required for the nuclear fusion reaction.

[0004] However, if the reliability of the plasma generator is low, the nuclear fusion reaction device may be damaged during the test, so a solution for reliable testing of the plasma generator is urgently needed. Utility Model Content

[0005] The present application provides a plasma generator test device, which can reliably test the plasma generator and facilitate the acquisition of test results. The plasma generator test device comprises: a transparent insulating test cylinder, and two cover plate assemblies respectively sealed and connected to the openings at both ends of the test cylinder;

[0006] The two cover plate assemblies each have a target installation port, the target installation port of any one of the two cover plate assemblies is used to install a plasma generator, and the target installation port of the other of the two cover plate assemblies is used to install a test electrode; the plasma generator emits plasma into the test cylinder, and a plasma current is formed between the plasma generator and the test electrode based on the plasma.

[0007] In an embodiment of the present application, the plasma generator can be tested by a testing device, and the testing device includes a transparent insulating test barrel, and two cover assemblies sealed and connected to the openings at both ends of the test barrel, and the plasma generator and the test electrode can be respectively installed in the target installation ports of the two cover assemblies. The plasma generator can emit plasma into the space surrounded by the two cover assemblies and the test barrel, and further form a plasma current between the plasma generator and the test electrode. In this way, the working process of the plasma generator when applied to the nuclear fusion reaction process can be simulated. By observing the process of forming the plasma current, the reliability of the plasma generator can be determined, and whether the plasma generator is suitable for use in the nuclear fusion reaction process, so as to avoid damage to the nuclear fusion reaction device by testing the plasma generator on the basis of the nuclear fusion reaction device.

[0008] Moreover, through the transparent test tube, the tester can directly observe the formation process of the plasma current in a simple and intuitive manner, and can more conveniently determine the test results of the plasma generator. The test tube is also made of insulating material, which can prevent the generated plasma current from being affected by the test tube, ensure the stable generation of the plasma current, and ensure a good test effect on the plasma generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of a plasma generator testing device provided in one embodiment of the present application;

[0010] Figure 2 It is a structural schematic diagram of a lower cover assembly provided by an embodiment of the present application;

[0011] Figure 3 is a schematic diagram of a partial structure of a plasma generator testing device provided in one embodiment of the present application;

[0012] Figure 4 It is an exploded view of a part of the structure of a test device for a plasma generator provided in one embodiment of the present application;

[0013] Figure 5 It is a structural schematic diagram of another plasma generator testing device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0014] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0015] The terms used in one or more embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of the present application. The singular forms of "one", "said" and "the" used in one or more embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of the present application refers to and includes any or all possible combinations of one or more associated listed items. The term "at least one" in one or more embodiments of the present application refers to "one or more", and "multiple" refers to "two or more". The term "including" is an open description and should be understood as "including but not limited to", and may include other content on the basis of the content described.

[0016] It should be understood that, although the terms "first", "second", etc. may be used to describe various information in one or more embodiments of the present application, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of the present application, "first" may also be referred to as "second", and similarly, "second" may also be referred to as "first". Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0017] At present, nuclear fusion is considered to be an ideal choice for solving human energy problems. A large amount of clean energy can be provided through nuclear fusion reactions, and the fuel sources required for nuclear fusion reactions are extensive and the cost is low. Accordingly, nuclear fusion reaction devices are widely studied, such as tokamak devices, which are a kind of nuclear fusion reaction devices that have been studied more. The nuclear fusion reaction device may include a nuclear fusion reaction chamber, in which plasma can be generated, and a plasma current is formed to control the movement of the plasma, and the plasma is heated to the fusion temperature to generate a nuclear fusion reaction. In some implementations, a plasma generator (such as a plasma gun) can be used for pre-ionization, and the working gas is broken down to generate the plasma required for the nuclear fusion reaction, and the plasma is injected into the nuclear fusion reaction chamber.

[0018] Before using a plasma generator, it is necessary to test whether the plasma generator is suitable for providing the plasma current required for nuclear fusion reactions. Usually, the pre-ionization of the plasma generator is tested on the basis of the nuclear fusion reaction device, but the plasma generator may break down during the pre-ionization test phase, causing damage to the fusion device. In order to reduce the possible damage to the nuclear fusion reaction device, a solution that can quickly and economically verify the pre-ionization effect of the plasma generator is urgently needed.

[0019] In a related technology, stainless steel is used to prepare the main body of the vacuum chamber to test the pre-ionization effect of the plasma generator in the vacuum chamber. The production cycle and production cost of the vacuum chamber are relatively high. Secondly, it is usually necessary to observe the plasma morphology in the vacuum chamber during the pre-ionization test. The vacuum chamber using stainless steel needs to add glass windows at specific positions, and the observation through the glass windows has great limitations. In addition, usually large-volume vacuum chambers cannot set up magnetic field coils to simulate magnetic field conditions. Small-volume vacuum chambers can more conveniently add magnetic field coils but often cannot add more effective visualization windows. In addition, the interface of the vacuum chamber is usually sealed by the deformation of the copper gasket. When reinforcing the device, there are certain requirements for various aspects of torque, which makes the installation operation more complicated and cumbersome.

[0020] An embodiment of the present application provides a testing device for a plasma generator, which can simulate the vacuum and magnetic field environments of a nuclear fusion reaction device, reliably test the plasma generator, and facilitate observation of the morphology of the plasma during the test and acquisition of the test results.

[0021] Figure 1 Schematic diagram of the structure of a plasma generator test device provided in one embodiment of the present application. Figure 1 As shown, the test device 10 includes: a transparent insulating test barrel 101, and two cover plate assemblies respectively sealed and connected to the openings at both ends of the test barrel 101, and the two cover plate assemblies may include an upper cover assembly 102 and a lower cover assembly 103. In the embodiment of the present application, the connection between each cover plate assembly and the test barrel 101 can be sealed by the structure of the cover plate assembly or the test barrel 101 itself, or can also be sealed by other sealing components.

[0022] The two cover plate assemblies may both have a target installation port, such as the target installation ports of the upper cover assembly 102 and the lower cover assembly 103 are marked as 1021 and 1031 respectively. The target installation port of any of the two cover plate assemblies is used to install a plasma generator (not shown in the figure), and the target installation port of the other of the two cover plate assemblies is used to install a test electrode (not shown in the figure). In the embodiment of the present application, the target installation port 1021 in the upper cover assembly 102 is used to install a test electrode, and the target installation port 1031 in the lower cover assembly 103 is used to install a plasma generator as an example. The plasma generator can emit plasma into the test barrel, and form a plasma current between the plasma generator and the test electrode based on the plasma. The material of the test electrode may include molybdenum or other conductive materials.

[0023] In some embodiments, the orthographic projections of the two target mounting ports of the two cover plate assemblies on any cover plate assembly may overlap, so as to ensure that the plasma generator and the test electrode are arranged as opposite to each other as possible, so that the plasma current can be formed more easily. For example, the orthographic projections of the two target mounting ports may overlap, or the orthographic projection of one target mounting port may be located within the orthographic projection of the other target mounting port.

[0024] The space enclosed by the two transparent covers and the test barrel 101 can be used as a test environment for a plasma generator. In an embodiment of the present application, the environmental conditions in the test barrel 101 can be set based on the environmental conditions required for a specified nuclear fusion reaction device to perform a nuclear fusion reaction, ensuring that the environmental conditions in the test barrel 101 are substantially the same as the environmental conditions required for a nuclear fusion reaction. For example, the test environment must meet negative pressure conditions and must have a certain magnetic field formed therein. By making the plasma generator work in this environment, the working process of the plasma generator when applied to a nuclear fusion reaction process can be simulated. By observing the working process of the plasma generator, the reliability of the plasma generator can be determined, as well as whether the plasma generator is suitable for use in a nuclear fusion reaction process, to avoid damage to the nuclear fusion reaction device by testing the plasma generator on the basis of the nuclear fusion reaction device.

[0025] The plasma generator can be a plasma gun. The plasma generator can include an anode and a cathode, and generates plasma by breaking down the gas between the anode and the cathode. The head of the plasma generator can extend into the test barrel 101, and the anode and the cathode can be arranged at the head of the plasma generator, so as to spray the generated plasma into the test barrel 101, and the plasma can diffuse between the plasma generator and the test electrode. The test device 10 can also form a magnetic field between the plasma generator and the test electrode, and under the action of the magnetic field, a plasma current can be formed between the plasma generator and the test electrode based on the plasma. This is equivalent to introducing the plasma current between the anode and the cathode of the plasma generator into the test barrel 101, which is convenient for observing the plasma current.

[0026] The test device 10 may further include a magnetic field coil assembly (not shown in the figure), which can be used to form a magnetic field between the plasma generator and the test electrode. The magnetic field coil assembly surrounds the test barrel 101 and is arranged outside the test barrel 101 to avoid being damaged by the plasma current in the test barrel 101. The magnetic field coil assembly can be used to simulate the ohmic coil in a nuclear fusion reaction device.

[0027] In the embodiment of the present application, the test tube 101 is made of a transparent material, so the tester can observe and record the formation process of the plasma current from various angles in a simple and intuitive manner, meet the visualization requirements of the test, and more conveniently determine the test results of the plasma generator. The material of the test tube 101 is also an insulating material, which can prevent the generated plasma current from being affected by the test tube, such as avoiding the phenomenon of eddy currents in the process of generating plasma current, ensuring the stable generation of plasma current, ensuring stable testing of the actual working conditions of the plasma generator, and ensuring good test results.

[0028] In addition, the test barrel 101 is the main component constituting the test environment, and the test barrel 101 needs to withstand a certain pressure. In the embodiment of the present application, the strength of the test barrel 101 can be greater than the strength threshold to ensure the reliability of the test environment. Since there will be heat release in the process of forming the plasma current, which causes the temperature in the test environment to rise, the test barrel 101 can also be supported by a heat-resistant material to avoid damage to the test barrel 101 caused by the temperature rise, resulting in the destruction of the test environment. In some embodiments, the material of the test barrel 101 is acrylic, which has good insulation and stability, and can be applied to more destructive discharge requirements. The transparency of the material also allows for better observation and recording, which can meet the requirements for transparency, insulation, heat resistance and high strength of the test barrel 101.

[0029] In the embodiment of the present application, the target installation opening on each cover assembly can be located in the central area of ​​the cover assembly, so as to ensure the symmetry of the environmental state at each position in the entire test cylinder 101, ensure the stability of the formed plasma current, and avoid the influence of the plasma current on the plasma current caused by the different environmental states on both sides of the plasma current.

[0030] In some embodiments, each cover plate assembly may include a cover plate body and a mounting flange tube protruding from the cover plate body, a mounting hole may be provided on the cover plate body, the mounting flange tube is connected to the mounting hole and together constitutes a target mounting port, and the target mounting port is used to install the plasma generator and the test electrode using the mounting flange tube. The target mounting port 1021 in the upper cover assembly 102 can use the mounting flange tube to install the test electrode, and the target mounting port 1031 in the lower cover assembly 103 can use the mounting flange tube to install the plasma generator. For example, a flange is provided at the head of the plasma generator, and the plasma generator uses the flange to achieve fixation with the mounting flange tube of the target mounting port 1031 through bolts. For example, the mounting flange tube can be welded at the location of the mounting hole on the cover plate body to obtain the target mounting port. The mounting flange tube can be a CF flange tube to ensure high installation sealing.

[0031] In the embodiment of the present application, the structure of the cover plate assembly is introduced by taking the lower cover assembly 103 as an example. The structure of the upper cover assembly 102 is similar to that of the lower cover assembly 103 and is not further introduced here. Figure 2 is a structural schematic diagram of a lower cover assembly provided in one embodiment of the present application, such as Figure 2 As shown, the lower cover assembly 103 includes a cover body 1030 and a mounting flange tube 10312 protruding from the cover body 1030 . The cover body 1030 may be provided with a mounting hole 10311 . The mounting flange tube 10312 is connected to the mounting hole 10311 and together constitutes a target mounting port 1031 .

[0032] In some embodiments, please continue to refer to Figure 1 and Figure 2 , the target installation port 1031 for installing the plasma generator protrudes toward the inside of the test barrel 101, and the target installation port 1021 for installing the test electrode protrudes toward the side away from the test barrel 101. When assembling the test device 10, the plasma generator can be installed at the target installation port 1031 first, and then the test barrel 101 is connected to the lower cover assembly 103. The test electrode can be set at the target installation port 1021 after the upper cover assembly 102 is connected to the test barrel 101.

[0033] In addition to being used to load the plasma generator and the test electrode, at least one of the two cover plate assemblies of the test device 10 can also be used to fix the entire test device 10. For example, the edge of at least one cover plate assembly has a fixing hole, which is used to fix with the bearing structure to adjust the position of the combined structure of the test barrel 101, the upper cover assembly 102 and the lower cover assembly 103. The bearing structure can ensure the setting stability of the test device 10, and can also make the test device at a suitable height, which is convenient for wiring the test device 10 and observing the test process. If the test device also includes other components, the bearing structure can also be used to carry the other components.

[0034] Figure 1 and Figure 2 For example, the lower cover assembly 103 has a fixing hole 1033, and the fixing to the bearing structure can be achieved by inserting a screw into the fixing hole 1033. The bearing structure can be a bearing frame. Figure 1 and Figure 2 The edge of the lower cover assembly 103 has a protruding ear seat (not shown in the figure), and the fixing hole 1033 can be located on the ear seat, which can increase the convenience of fixing and prevent the fixing hole 1033 from affecting the connection between the lower cover assembly 103 and other components. The ear seat can be integrally formed with the lower cover assembly 103, or can also be welded to the edge of the lower cover assembly 103, which is not limited here. The material strength of the ear seat is relatively high, such as stainless steel.

[0035] Please continue to refer to Figure 1 , the test device 10 also includes at least one pillar 104. The pillar 104 is located outside the test cylinder 101, and the two ends of the pillar 104 are respectively connected to the two cover plate assemblies for fixing and supporting the two cover plate assemblies, so as to realize the connection between the two cover plate assemblies and the test cylinder 101. For example, the two ends of each pillar 104 are respectively connected to the corner positions of the two cover plate assemblies. In some embodiments, the number of pillars 104 can be determined based on the shape of the cover plate assembly. In the embodiment of the present application, the cover plate assembly is a quadrilateral, and the test device 10 includes four pillars 104 as an example. If the cover plate assembly is a pentagon, the test device 10 may include five pillars 104. There is no limitation on the number and position of the pillars 104 here, and it is only necessary to ensure that each pillar 104 can provide stable support for the upper and lower cover plate assemblies.

[0036] For example, both ends of the pillar 104 may have threads, and the edge area of ​​the cover assembly may be provided with a pillar mounting hole, and the end of the pillar 104 may pass through the pillar mounting hole and be fixed to the cover assembly by screws. The pillar 104 may also have threads at only one end, and the other end may be fixedly connected to a cover assembly. The strength of the pillar 104 may be relatively high, for example, the material of the pillar 104 may include stainless steel.

[0037] In some implementations, the two cover plate assemblies in the test device 10 can be made of conductive materials, and the material of the pillar 104 can also be conductive materials. The electrical connection of the two cover plate assemblies can be achieved through the pillar 104, so that the two cover plate assemblies maintain the same potential. For example, the pillar 104 can be grounded to achieve the grounding of the two cover plate assemblies through the pillar 104. In this way, it is possible to avoid the occurrence of sparks between the two cover plate assemblies during the test of the plasma generator, thereby avoiding the impact on the test process. In another implementation, the material of the pillar 104 is an insulating material, and the two cover plate assemblies can be grounded using additional wires.

[0038] In an embodiment of the present application, the magnetic field coil assembly in the test device 10 surrounds the test barrel 101, such as being located between the test barrel 101 and the pillar 104. There may be a gap between the magnetic field coil assembly and the test barrel 101, and the magnetic field coil assembly may be fixed in position by the pillar 104. For example, the magnetic field coil assembly includes a magnetic field coil body and a fixing structure of the magnetic field coil body, and the magnetic field coil assembly may be connected to the pillar 104 using the fixing structure. For example, the fixing structure may be made of an insulating material (such as plastic), and the fixing structure may extend outward from the magnetic field coil body and be fixed on the pillar 104 by snapping. In this way, there is no need to fix the magnetic field coil assembly on the test barrel 101, and damage to the test barrel 101 may be avoided.

[0039] In the embodiment of the present application, the testing device 10 further includes two sealing assemblies respectively located at the two ends of the testing barrel 101 and surrounding the testing barrel 101, and the cover plate assembly is sealedly connected with the testing barrel 101 through the sealing assemblies. By way of example, the sealing assembly may include a clamping ring and a sealing ring, the sealing ring being located between the clamping ring and the cover plate assembly, the clamping ring being connected to the cover plate assembly, and the sealing ring being squeezed so as to be in close contact with the edge of the testing barrel 101, so as to seal the opening of the testing barrel 101.

[0040] Figure 3 is a schematic diagram of a partial structure of a plasma generator testing device provided in one embodiment of the present application, Figure 4 is an exploded view of a part of the structure of a plasma generator test device provided in one embodiment of the present application, Figure 3 The combined structure of the test cylinder 101, the lower cover assembly 103 and the sealing assembly 105 located at the lower end of the test cylinder 101 in the test device 10 is schematically illustrated. Figure 4 The combined structure of the lower cover assembly 103 and the sealing assembly 105 at the lower end of the test barrel 101 is illustrated. The structure, sealing method and connection method of the two sealing assemblies 105 in the test device 10 are the same as those of the cover plate assembly. For the sealing assembly at the upper end of the test barrel 101, please refer to Figure 3 and Figure 4 The description of the sealing assembly 105 is omitted here.

[0041] Please combine Figures 1 to 4The sealing assembly 105 includes a collar 1051 and a sealing ring 1052 which are sleeved on the end of the test tube 101, and the sealing ring 1052 is located between the collar 1051 and the lower cover assembly 103. The lower cover assembly 103 may have a plurality of screw holes, such as the lower cover assembly 103 including a cover plate body and a flange with a plurality of screw holes welded on the cover plate body. The collar 1051 and the lower cover assembly 103 may be connected by a fixing member (such as a screw). For example, a plurality of through holes may be provided on the collar 1051, and the outer diameter of the sealing ring 1052 may be smaller than the outer diameter of the collar 1051. The sealing ring 1052 may be located in a ring surrounded by a plurality of through holes on the collar 1051, and contact the area in the ring of the collar 1051. A screw may be used to pass through the through hole on the collar 1051 and extend into the corresponding screw hole on the lower cover assembly 103, and be threadedly connected with the screw hole. During the process of tightening the screws, the area near the inner ring of the retaining ring 1051 squeezes the sealing ring 1052 to deform the sealing ring 1052, filling the gap between the sealing assembly 105 and the test cylinder 101. The deformed sealing ring 1052 is in close contact with the edge of the test cylinder 101 to seal the opening of the test cylinder 101 and provide good air tightness for the test environment. In addition, the environment in the test cylinder 101 is a negative pressure environment, which will also cause the retaining ring 1051 to be pressed against the cover assembly under the action of atmospheric pressure. In some embodiments, the sealing ring 1052 may also have a plurality of through holes, and screws may be used to sequentially pass through the through holes on the retaining ring 1051 and the sealing ring 1052 and extend into the corresponding screw holes on the lower cover assembly 103.

[0042] The collar 1051 needs to be able to withstand a certain pressure, and the collar 1051 can be made of a material with a relatively high strength. The collar 1051 can also be made of an insulating material to avoid electrical interference with the cover assembly. For example, the collar can be made of an epoxy material.

[0043] In the embodiment of the present application, the sealing of the test tube 101 is achieved by using a clamping ring 1051 in combination with a sealing ring 1052. The sealing ring 1052 can be deformed more easily, and the requirement for the applied force is low. The requirement for the force-bearing capacity of the clamping ring 1051 is also low, which can improve the convenience of disassembly and assembly, and can improve the sealing and setting accuracy.

[0044] The upper cover assembly 102 is similar to the lower cover assembly 103, and may also include a cover body and a flange with multiple screw holes welded to the cover body. The material of the flange may be the same as that of the cover body. The connection method between the sealing assembly of the cover body and the upper cover assembly 103 may also refer to the above description of the sealing assembly 105, which will not be repeated here.

[0045] In the embodiment of the present application, at least one of the two cover plate assemblies of the test device 10 also has a plurality of expansion interfaces, and the test device 10 also includes an auxiliary structure for assisting the test plasma generator, and the expansion interface is used to install the auxiliary structure to expand the function of the test device 10. The plurality of expansion interfaces can be evenly arranged to ensure that the conditions at various positions in the test cylinder 101 are detected by using the expansion interfaces. For example, Figures 1 to 4 All the mounting ports other than the target mounting ports in the upper cover assembly 102 and the lower cover assembly 103 can be expansion ports. In the embodiment of the present application, the upper cover assembly 102 has six expansion ports 1022 and the lower cover assembly 103 has four expansion ports 1032 as an example.

[0046] Similar to the above-mentioned target installation port, the cover body in the cover assembly can be provided with an extension flange tube protruding from the cover body, and the cover body is provided with an extension hole. The extension flange tube is connected to the extension hole and together constitutes an extension interface, and the extension interface uses the extension flange tube to install the auxiliary structure. For example, the extension flange tube can be welded at the location of the extension hole on the cover body to obtain the extension interface. The extension flange tube can be a KF flange tube to ensure the convenience of disassembly and facilitate the replacement of the auxiliary structure for installation. Please continue to refer to Figure 2 Still taking the lower cover assembly 103 as an example, the cover plate body 1030 in the lower cover assembly 103 is provided with an extension flange tube 10322 protruding from the cover plate body 1030, and the cover plate body 1030 is provided with an extension hole 10321, and the extension flange tube 10322 is connected to the extension hole 10321 and together constitutes an extension interface 1032.

[0047] Figure 5 Schematic diagram of another plasma generator test device provided in one embodiment of the present application. Figure 5 As shown, at least one expansion interface in the cover plate assembly of the testing device 10 is provided with a bellows (not marked in the figure), and the at least one expansion interface can be connected to an auxiliary structure through the bellows. Figure 5 For example, a bellows is provided on the four expansion interfaces 1022 of the upper cover assembly 102. The material of the bellows may include metal, such as aluminum alloy.

[0048] The bellows is retractable and its shape can change to a certain extent, so the installation flexibility of the auxiliary structure can be improved. The bellows can be suitable for auxiliary structures with larger volumes, or auxiliary structures that need to be moved, or auxiliary structures that need to be connected to expansion interfaces through pipes or other parts that need to be bent.

[0049] In one embodiment, the auxiliary structure includes an air extraction device, which can be connected to the first extension interface in the cover assembly by an air extraction pipeline, and exhaust the air in the test cylinder 101 through the first extension interface, so that the test cylinder 101 maintains a negative pressure state. The first extension interface can be any extension interface 1022 in the upper cover assembly 102, and can also be any extension interface 1032 in the lower cover assembly 103.

[0050] In one embodiment, the auxiliary structure includes a gas input device, which uses an air intake pipe to connect the second extension interface in the cover assembly, and inputs working gas into the test cylinder 101 through the second extension interface. The second extension interface can be any extension interface 1022 in the upper cover assembly 102, or any extension interface 1032 in the lower cover assembly 103. The head of the plasma generator can extend into the test cylinder 101, and the working gas can diffuse between the cathode and anode of the plasma generator, and the cathode and anode generate plasma by breaking down the working gas. A control valve can also be provided on the air intake pipe to accurately adjust the intake amount.

[0051] In one embodiment, the auxiliary structure includes a detection component for detecting parameters related to the plasma current, and the detection component can be installed in the third extension interface in the cover assembly. For example, the test device 10 may include multiple detection components, and different detection components can be used to detect different parameters related to the plasma current, or to detect the same parameter at different positions. For example, the detection component may include a sensor for detecting test parameters (such as temperature, humidity or density) in the test cylinder 101, and may also include a magnetic probe for measuring magnetic field information, plasma position, etc. Each detection component can be installed in a third extension interface, or multiple detection components can be installed in a corresponding third extension interface. The third extension interface may include any one or more extension interfaces 1022 in the upper cover assembly 102, and may also include any one or more extension interfaces 1032 in the lower cover assembly 103.

[0052] In the test device provided in the embodiment of the present application, the test tube 101 can have good sealing performance, and the test tube 101 can maintain a negative pressure environment, such as 10 -4The PA-level air pressure environment meets the vacuum requirements of the plasma generator for stable breakdown discharge experiments. The test device adjusts the magnetic field environment in the test cylinder 101 through the magnetic field coil assembly to ensure that the magnetic field requirements required for the test are met. By using the test device to test the plasma generator, the working process of the plasma generator when applied to the nuclear fusion reaction process can be simulated to determine the reliability of the plasma generator and whether the plasma generator is suitable for use in the nuclear fusion reaction process, thereby avoiding damage to the nuclear fusion reaction device caused by testing the plasma generator on the basis of the nuclear fusion reaction device.

[0053] The test device uses a transparent test tube 101 to meet the visualization requirements of the test process, which is convenient for the staff to observe and record the test process of the plasma generator from various angles, and can more conveniently determine the test results of the plasma generator. The test tube 101 is also made of insulating material, which can avoid the influence of eddy currents on the plasma current during the experiment, ensure the stable generation of plasma current, and ensure a good test effect on the plasma generator. The structure of the test device is relatively simple, and the disassembly and assembly of the sealing component is relatively simple. The test device can be adjusted in time, and vulnerable components can be replaced.

[0054] The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0055] Those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application. In the above embodiments, the description of each embodiment has its own emphasis, and for parts not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0056] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The optional embodiments do not describe all the details in detail, nor do they limit the present application to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can understand and use the present application well.

Claims

1. A plasma generator testing device, characterized in that: The testing device comprises: a transparent insulating testing cylinder, and two cover plate assemblies respectively sealed and connected to the openings at both ends of the testing cylinder; The two cover plate assemblies each have a target installation port, the target installation port of any one of the two cover plate assemblies is used to install a plasma generator, and the target installation port of the other of the two cover plate assemblies is used to install a test electrode; the plasma generator emits plasma into the test cylinder, and a plasma current is formed between the plasma generator and the test electrode based on the plasma.

2. The plasma generator testing device according to claim 1, characterized in that: The material of the test tube includes acrylic, and / or the target installation port is located in the central area of ​​the cover assembly.

3. The plasma generator testing device according to claim 1 or 2, characterized in that: The testing device further comprises at least one support column, wherein the support column is located outside the testing cylinder; Both ends of the support column are respectively connected to the two cover plate assemblies for supporting the two cover plate assemblies.

4. The plasma generator testing device according to claim 3, characterized in that: The cover plate assembly and the pillar are both made of conductive materials, and the two cover plate assemblies are grounded through the pillar.

5. The plasma generator testing device according to claim 4, characterized in that: The testing device further comprises a magnetic field coil assembly located between the testing cylinder and the support and surrounding the testing cylinder; the magnetic field coil assembly is used to form a magnetic field in the testing cylinder so that the plasma forms the plasma current; There is a gap between the magnetic field coil assembly and the testing cylinder. The magnetic field coil assembly includes a magnetic field coil body and a fixing structure of the magnetic field coil body. The magnetic field coil assembly is connected to the support by using the fixing structure.

6. The plasma generator testing device according to claim 1 or 2, characterized in that: The testing device further comprises two sealing assemblies respectively located at two ends of the testing cylinder and surrounding the testing cylinder; The cover assembly is sealed and connected to the test cylinder through the sealing assembly; the sealing assembly includes a clamping ring and a sealing ring, the sealing ring is located between the clamping ring and the cover assembly, the clamping ring is connected to the cover assembly, and squeezes the sealing ring so that the sealing ring is in close contact with the edge of the test cylinder.

7. The plasma generator testing device according to claim 1 or 2, characterized in that: At least one of the two cover plate assemblies further has a plurality of expansion interfaces, and the testing device further comprises an auxiliary structure for assisting in testing the plasma generator, and the expansion interface is used for installing the auxiliary structure.

8. The plasma generator testing device according to claim 7, characterized in that: The multiple expansion interfaces are evenly arranged; And / or, at least one expansion interface is provided with a bellows, and the at least one expansion interface is connected to the auxiliary structure via the bellows; And / or, the cover assembly includes a cover body and an extension flange tube protruding from the cover body, the cover body is provided with an extension hole, the extension flange tube is connected to the extension hole and together constitutes the extension interface, and the extension interface utilizes the extension flange tube to install the auxiliary structure.

9. The plasma generator testing device according to claim 8, characterized in that: The auxiliary structure includes an air extraction device, which is connected to a first extension interface among the plurality of extension interfaces by an air extraction pipeline, and exhausts air in the test cylinder through the first extension interface, so that the test cylinder is kept in a negative pressure state; And / or, the auxiliary structure includes a gas input device, the gas input device is connected to a second extension interface among the plurality of extension interfaces by an air intake pipeline, and inputs working gas into the test cylinder through the second extension interface; the plasma generator extends into the test cylinder, and generates plasma by breaking down the working gas; And / or, the auxiliary structure includes a detection component for the plasma current.

10. The plasma generator testing device according to claim 1 or 2, characterized in that: The cover plate assembly includes a cover plate body and a mounting flange tube protruding from the cover plate body, the cover plate body is provided with a mounting hole, the mounting flange tube is connected to the mounting hole and together constitutes the target mounting port, the target mounting port is used to mount the plasma generator and the test electrode using the mounting flange tube; And / or, at least one of the two cover plate assemblies has a fixing hole on its edge, and the fixing hole is used to be fixed to the bearing structure to adjust the position of the combined structure of the two cover plate assemblies and the test.

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