System for detecting equivalent shearing force of nuclear fusion superconducting coil under multi-element coupling working condition

Abstract

The invention discloses an equivalent shear force detection system for a nuclear fusion superconducting coil under a multi-element coupling working condition, and belongs to the field of conductor insulation development of the nuclear fusion superconducting coil. The system comprises a nuclear magnetic resonance scanner, a signal exchanger, a liquid helium cooling system, a superconducting coil immersed curing insulation composite material sample piece, a four-stage magnetic field, a bipolar magnetic field, a neutron irradiation probe, a liftable rotary mechanical arm and an AI large model processing server. Completing the detection of the equivalent shearing force of the superconducting coil insulating material under the working conditions of magnetic coupling, neutron irradiation and the like in the nuclear fusion reaction stage; the insulation material equivalent shear force detection system can detect the endogenous organization structure change of the insulation composite material of the superconducting coil in the nuclear fusion reaction stage, and can avoid the situation that the electric insulation composite material of the superconducting coil is forced to be interrupted in the nuclear fusion reaction due to fatigue damage caused by concentrated equivalent shear force.

Description

Technical Field

[0001] The present invention relates to the field of research and development of armored superconducting coils for nuclear fusion, and particularly to an equivalent shear force detection system for a nuclear fusion superconducting coil under multi-field coupling conditions. Background Art

[0002] Nuclear fusion energy is regarded as the ultimate solution to global energy crises and climate problems due to its abundant fuel resources (deuterium and tritium can be extracted from seawater), zero carbon emissions, and high safety. The realization of nuclear fusion energy depends on the magnetic field generated by a fully steady-state superconducting magnet coil to confine the high-temperature plasma in the nuclear fusion device. When the superconducting coil operates, it bears electromagnetic force and thermal stress under dynamic neutron irradiation, and requires the insulator to have both high shear strength and radiation resistance.

[0003] The superconducting coil in the nuclear fusion device needs to operate in an environment of strong magnetic field, extremely low temperature, and high-energy particle radiation. The insulator wrapped around the superconducting coil needs to withstand the combined action of multiple loads such as electromagnetic force and thermal stress, and the shear force is the key factor leading to the delamination or fracture of the insulating layer. Based on the dynamically complex and variable working conditions during the nuclear fusion reaction process, traditional push-type pure mechanical structure equipment can only sense and measure the change of the shear force limit of the superconducting coil insulator composite material from the perspective of contact mechanical stress, and cannot meet the detection requirements of the shear force limit of the superconducting coil insulator composite material under multi-field coupling conditions during the nuclear fusion reaction stage. The equivalent shear force detection system for a nuclear fusion superconducting coil under multi-field coupling conditions, from the perspective of the multi-field coupling failure mechanism, uses an AI large model processing server to establish an electromagnetic coupling-thermal stress perception model for the electrical insulator composite material of the superconducting coil under neutron irradiation conditions, so as to effectively predict the equivalent shear force failure threshold of the superconducting coil insulator under transient plasma rupture and further enhance the ultimate shear force tolerance performance of the superconducting coil insulator composite material. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an equivalent shear force detection system for a nuclear fusion superconducting coil under multi-field coupling conditions, which can solve the problems of insufficient high shear strength and radiation resistance of the superconducting coil insulator composite material under extreme working conditions such as strong magnetic field, extremely low temperature, and neutron irradiation. It greatly improves the service life cycle of the superconducting coil insulator composite material, effectively reduces the time and technical costs of scientific research personnel, and has the advantages of high system integration intelligence, simple structure, and strong reliability.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An equivalent shear force detection system for a nuclear fusion superconducting coil under multi-field coupling conditions, comprising:

[0007] Ultra-low temperature energized working condition forming module, used to simulate and test the change of shear force generated by the deformation of the electrical insulation composite material of the superconducting coil cladding due to the change of the ultra-low temperature temperature cloud field;

[0008] Magnetic levitation module, used to simulate and test the change of shear force generated by the deformation of the electrical insulation composite material cladding of the superconducting coil due to the Ampere force formed after the superconducting conductor coil is energized and the alternating magnetic field formed by the superconducting coil magnet;

[0009] Four-level magnetic field and neutron irradiation module, used to simulate and test the equivalent shear change during the process of the electrical insulation composite material cladding of the superconducting coil being subjected to the dynamic magnetic field of multiple magnets and neutron irradiation change in the Tokamak fusion device.

[0010] Beneficial effects:

[0011] The present invention solves the problems of insufficient high shear strength and radiation resistance performance of the insulator composite material of the fusion superconducting coil under extreme working conditions such as strong magnetic field, extremely low temperature, and neutron irradiation. Greatly improves the service life cycle of the insulator composite material of the superconducting coil, effectively reduces the time and technical costs of scientific research personnel; has the advantages of high system integration intelligence, simple structure, and strong reliability. The present invention has the advantages of simple system structure, convenient operation, easy to learn, fast and efficient, and strong technical application. Brief description of the drawings

[0012] A part of the specification drawings of the present invention is used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0013] Figure 1 It is a schematic structural diagram of the magnetic force coupling and neutron irradiation working condition of an equivalent shear force detection system for a fusion superconducting coil under multiple coupled working conditions of the present invention.

[0014] Figure 2 It is a schematic diagram of the ultra-low temperature energized working condition forming module of an equivalent shear force detection system for a fusion superconducting coil under multiple coupled working conditions of the present invention.

[0015] Figure 3 It is a schematic diagram of the installation of the superconducting coil insulator sample of an equivalent shear force detection system for a fusion superconducting coil under multiple coupled working conditions of the present invention.

[0016] Figure 4 It is a schematic structural diagram of the superconducting coil insulator sample of the present invention.

[0017] In the figure, the reference numerals are: 1 - lifting lug, 2 - superconducting liquid helium pipe inlet female joint, 3 - superconducting liquid helium inlet pipe, 41 - liquid helium inlet diverter plate, 5 - superconducting coil insulator-like part, 42 - liquid helium outlet diverter plate, 6 - superconducting liquid helium outlet pipe, 7 - superconducting liquid helium pipe outlet female joint, 8 - superconducting liquid helium pipe inlet male joint, 9 - superconducting cable liquid helium delivery inlet helium hose, 10 - liquid helium storage tank, 11 - liquid helium circulation pipe, 12 - liquid helium circulation pump, 13 - helium outlet hose, 14 - superconducting liquid helium pipe outlet male joint, 15 - liquid helium circulation pipe power transmission and distribution bridge, 16 - exchanger, 17 - processing server, 18 - multi-pole magnetic field power transmission and distribution bridge, 19 - mechanical support arm, 20 - lower bipolar magnetic field, 21 - upper bipolar magnetic field, 22 - upper bipolar magnetic field telescopic slide rail, 23 - bipolar magnetic field excitation power supply box, 24 - left quadrupole magnetic field, 25 - rear quadrupole magnetic field, 26 - left neutron irradiation probe connection bearing sleeve, 27 - neutron irradiation probe, 28 - right neutron irradiation probe connection bearing sleeve, 29 - nuclear magnetic resonance scanner, 30 - quadrupole magnetic field fixed support frame, 31 - right quadrupole magnetic field, 32 - front quadrupole magnetic field; 51 - superconducting coil liquid helium inlet pipe, 52 - armor, 53 - superconducting coil electrical insulation composite material cladding, 54 - superconducting coil liquid helium outlet pipe. Detailed implementation mode

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. To achieve the above objectives, the present invention adopts the following technical solutions.

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] An equivalent shear force detection system for a nuclear fusion superconducting coil under multiple coupled working conditions of the present invention. The present invention passes through cryogenic energization working conditions, magnetic levitation working conditions, quadrupole magnetic field working conditions, and neutron irradiation working conditions; simulates and tests one by one the deformation of the electrical insulation composite material of the superconducting coil cladding under the operation of any one of the above working conditions, and slices and scans the deformation through the nuclear magnetic resonance scanner 29. The scanned information is fed back to the AI large model processing server 17 through the multi-signal exchanger 16 to give the shear force change result.

[0021] The equivalent shear force detection system for a nuclear fusion superconducting coil under multiple coupled working conditions includes:

[0022] A cryogenic energization working condition forming module for simulating and testing the shear force change generated by the deformation of the electrical insulation composite material of the superconducting coil cladding due to the change of the cryogenic temperature cloud field.

[0023] A magnetic levitation module, which is used to simulate and test the change of shear force generated by the Ampere force formed after the superconducting conductor coil is energized and the alternating magnetic field formed by the superconducting coil magnet on the deformation of the superconducting coil electrical insulation composite material cladding;

[0024] A four-level magnetic field and neutron irradiation module, which is used to simulate and test the equivalent shear change during the dynamic magnetic field of multi-level magnets and neutron irradiation change process in the tokamak fusion device on the superconducting coil electrical insulation composite material cladding.

[0025] As Figure 2 shown, it is a schematic diagram of the ultra-low temperature power transmission working condition forming module of the present invention. The ultra-low temperature power transmission working condition forming module specifically includes: As Figure 3 shown, a superconducting liquid helium pipe inlet female joint 2, a superconducting liquid helium inlet pipe 3, a liquid helium inlet shunt plate 41, a superconducting coil insulator sample 5, a liquid helium outlet shunt plate 42, a superconducting liquid helium outlet pipe 6, a superconducting liquid helium pipe outlet female joint 7, a superconducting liquid helium pipe inlet male joint 8, a superconducting cable liquid helium delivery inlet helium hose 9, a liquid helium storage tank 10, a liquid helium circulation pipe 11, a liquid helium circulation pump 12, a superconducting cable liquid helium delivery outlet helium hose 13, and a superconducting liquid helium pipe outlet male joint 14, which are connected in sequence; further, it also includes: a liquid helium circulation pipe power distribution bridge 15, a multi-signal exchanger 16, and an AI large model processing server 17; As Figure 4 shown, the superconducting coil insulator sample 5 includes a superconducting coil liquid helium inlet pipe 51, a superconducting coil cable square-shaped protective armor 52, a superconducting coil electrical insulation composite material cladding 53, and a superconducting coil liquid helium outlet pipe 54. Among them, a lifting lug 1 is located on the superconducting liquid helium pipe inlet female joint 2 and is used to suspend the ultra-low temperature power transmission working condition forming module.

[0026] Under cryogenic energized conditions, the AI large model processing server 17 enables the multi-signal exchanger 16 to trigger the liquid helium circulation pipe power distribution bridge 15 to supply power to the embedded power supply liquid helium storage tank 10 and the liquid helium circulation pump 12. The liquid helium in the embedded power supply liquid helium storage tank 10 is driven by the liquid helium circulation pump 12 and transported through the superconducting cable liquid helium into the helium hose 9 and enters the connection between the superconducting liquid helium pipe outlet female joint 7 and the superconducting liquid helium pipe inlet male joint 8. Then, the liquid helium is sent to the liquid helium outlet diverter plate 42 through the superconducting liquid helium outlet pipe 6 and then diverted and enters the superconducting coil insulator-like part 5 through the superconducting coil liquid helium inlet pipe 51 respectively. Then, it flows out through the superconducting coil liquid helium outlet pipe 54 and enters the liquid helium inlet diverter plate 41. Then, it converges in the superconducting liquid helium inlet pipe 3. Then, it passes through the connection between the superconducting liquid helium pipe inlet female joint 2 and the superconducting liquid helium pipe outlet male joint 14 and then is transported out of the helium hose 13 through the superconducting cable liquid helium and returns to the liquid helium circulation pump 12. The AI large model processing server 17 enables the multi-signal exchanger 16 to trigger the embedded power supply in the liquid helium storage tank 10 to supply power to the system. After the superconducting coil insulator-like part 5 obtains current under the cryogenic condition of liquid helium temperature 4K (-269°C), a stable superconducting magnetic field is formed.

[0027] Under cryogenic conditions, regarding the relationship between temperature difference and the volume shrinkage and deformation of materials, the temperature difference (ΔT = T1 - T0) will cause material strain: ,

[0028] Among them, is the thermal expansion coefficient of the material, is the elastic modulus of the material. When there is a temperature gradient or constraint in the material, is the deformation of the difference in thermal expansion, where is the displacement component, is the coordinate direction, where is the shear modulus; is the equivalent shear force; The nuclear magnetic resonance scanner 29 scans and slices before and after the cryogenic energized condition, and then analyzes and compares the material tissue structure changes of the superconducting coil electrical insulation composite cladding 53 in the superconducting coil insulator-like part 5 through the AI large model to calculate the shear force result.

[0029] The magnetic levitation module such as Figure 1As shown, under the magnetic levitation condition, the AI large model processing server 17 supplies power to the lower bipolar magnetic field 20 and the upper bipolar magnetic field 21 through the multi-pole magnetic field power transmission and distribution bridge 18 based on the data provided by the multi-signal exchanger 16. The multi-pole magnetic field power transmission and distribution bridge 18 supplies power to the upper bipolar magnetic field 21 through the bipolar magnetic field excitation power supply box 23. The superconducting coil insulator sample 5 is located between the lower bipolar magnetic field 20 and the upper bipolar magnetic field 21. The stable superconducting magnetic field formed by the superconducting coil insulator sample 5 under the cryogenic power supply condition causes the superconducting coil insulator sample 5 to levitate under the action of the magnetic moments of the lower bipolar magnetic field 20 and the upper bipolar magnetic field 21. The component 5 can achieve magnetic levitation under the action of an alternating magnetic field. The superconducting coil electrical insulation composite material cladding 53 impregnated with vacuum pressure in the superconducting coil insulator sample 5 undergoes magnetostriction. At the same time, due to the connection of the liquid helium pipeline, the composite material of the superconducting coil insulator sample 5 undergoes volume shrinkage due to temperature changes, resulting in shear forces generated inside the composite material structure. The AI large model processing server 17 supplies power to the lower bipolar magnetic field 20 and the upper bipolar magnetic field 21 through the multi-pole magnetic field power transmission and distribution bridge 18 based on the data provided by the multi-signal exchanger 16. The stable superconducting magnetic field formed by the superconducting coil insulator sample 5 under the cryogenic power supply condition levitates under the action of the magnetic moments of the lower bipolar magnetic field 20 and the upper bipolar magnetic field 21. The position of the upper bipolar magnetic field 21 is adjusted through the upper bipolar magnetic field telescopic slide rail 22, and the distance between the lower bipolar magnetic field 20 and the upper bipolar magnetic field 21 is adjusted through the multi-functional lifting and rotating mechanical support arm 19, so that the equivalent shear force of the superconducting coil insulator sample 5 in the longitudinal direction changes due to the change in the bipolar magnetic field strength:

[0030] , where, is the equivalent shear force, K is a proportionality constant related to the electromagnetic properties of the material, ▽H is the magnetic field gradient, J is the current density. The nuclear magnetic resonance scanner 29 scans and slices the coil before and after the super magnetic levitation condition, and then analyzes and compares the structural changes of the superconducting coil electrical insulation composite material cladding 53 in the superconducting coil insulator sample 5 through the AI large model to calculate the shear force result.

[0031] Such as Figure 1As shown in the figure, the four - level magnetic field and neutron irradiation module includes: the left quadrupole magnetic field 24, the rear quadrupole magnetic field 25, the left neutron irradiation probe 27 in the left neutron irradiation probe connection bearing sleeve 26, the right neutron irradiation probe in the right neutron irradiation probe connection bearing sleeve 28, the nuclear magnetic resonance scanner 29, the four - level magnetic field fixed support frame 30, the right quadrupole magnetic field 31, and the front quadrupole magnetic field 32; Under the working condition of the four - level magnetic field, the AI large - model processing server 17 supplies power to the left quadrupole magnetic field 24, the rear quadrupole magnetic field 25, the right quadrupole magnetic field 31, and the front quadrupole magnetic field 32 respectively through the multi - pole magnetic field power transmission and distribution bridge 18 according to the data provided by the multi - signal exchanger 16. The stable superconducting magnetic field formed under the cryogenic power - on condition of the superconducting coil insulator sample 5 is under the magnetic moment action of the lower bipolar magnetic field 20 and the upper bipolar magnetic field 21. At the same time, the stable superconducting magnetic field formed under the cryogenic power - on condition of the superconducting coil insulator sample 5 also interacts with the left quadrupole magnetic field 24, the rear quadrupole magnetic field 25, the right quadrupole magnetic field 31, and the front quadrupole magnetic field 32. In this way, the superconducting coil insulator sample 5 is subjected to the magnetic force coupling of the transverse four - level magnetic field and the longitudinal bipolar magnetic field to form an equivalent shear force. At the same time, the left neutron irradiation probe 27 is connected to the nuclear magnetic resonance scanner 29 through the left neutron irradiation probe connection bearing sleeve 28; When the nuclear magnetic resonance scanner 29 rotates symmetrically to perform slice scanning on the superconducting coil insulator sample 5, the left neutron irradiation probe 27 and the right neutron irradiation probe irradiate the superconducting coil insulator sample 5 to complete the working condition in which the superconducting coil insulator sample 5 is subjected to neutron irradiation under the action of the transverse four - level magnetic field and the longitudinal bipolar magnetic field, so as to realize the true equivalent shear force of the superconducting coil insulator sample 5 under the multi - working conditions of nuclear fusion reaction. By rotating the nuclear magnetic resonance scanner 29 to perform slice analysis on the organizational structure of the superconducting coil electrical insulation composite cladding 53 in the superconducting coil insulator sample 5, and then through the analysis of the AI large - model, the change in the organizational structure of the superconducting coil electrical insulation composite cladding 53 is calculated to obtain the shear force result.

[0032] Those skilled in the art can easily understand that the above - mentioned is only the preferred embodiment of the present invention, and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An equivalent shear force detection system for a nuclear fusion superconducting coil under multi - element coupling conditions, characterized in that Comprising: A cryogenic energized working condition forming module, configured to simulate and test the change in shear force generated by the deformation of the superconducting coil cladding electrical insulation composite material due to the change in the cryogenic temperature cloud field. A magnetic levitation module, configured to simulate and test the change in shear force generated by the deformation of the superconducting coil electrical insulation composite material cladding due to the Ampere force formed after the superconducting conductor coil is energized and the alternating magnetic field formed by the superconducting coil magnet. A four-stage magnetic field and neutron irradiation module, configured to simulate and test the equivalent shear change during the process of the superconducting coil electrical insulation composite material cladding being subjected to the dynamic magnetic field of multiple-stage magnets and neutron irradiation change in a tokamak fusion device.

2. The equivalent shear force detection system under multiple coupled working conditions of a fusion superconducting coil according to claim 1, wherein The cryogenic energized working condition forming module includes: a superconducting liquid helium pipe inlet female joint, a superconducting liquid helium inlet pipe, a liquid helium inlet shunt plate, a superconducting coil insulator sample, a liquid helium outlet shunt plate, a superconducting liquid helium outlet pipe, a superconducting liquid helium pipe outlet female joint, a superconducting liquid helium pipe inlet male joint, a superconducting cable liquid helium delivery inlet helium hose, an embedded power supply liquid helium storage tank, a liquid helium circulation pipe, a liquid helium circulation pump, a superconducting cable liquid helium delivery outlet helium hose, a superconducting liquid helium pipe outlet male joint; and further includes a liquid helium circulation pipe power distribution bridge, a multi-signal exchanger, an AI large model processing server, and a multi-stage magnetic field power distribution bridge.

3. The equivalent shear force detection system under multiple coupled working conditions of a fusion superconducting coil according to claim 1, wherein The magnetic levitation module includes: a multi-functional lifting and rotating mechanical support arm, an upper bipolar magnetic field, a lower bipolar magnetic field, a bipolar magnetic field telescopic slide rail, and a bipolar magnetic field excitation power supply box.

4. The equivalent shear force detection system under multiple coupled working conditions of a fusion superconducting coil according to claim 1, wherein The four-stage magnetic field and neutron radiation module includes: a front four-stage magnetic field, a rear four-stage magnetic field, a left neutron irradiation probe connection bearing sleeve, a left neutron irradiation probe, a right neutron irradiation probe connection bearing sleeve, a right neutron irradiation probe, a nuclear magnetic resonance scanner, a four-stage magnetic field fixed support frame, a left four-stage magnetic field, and a right four-stage magnetic field.

5. The equivalent shear force detection system under multiple coupling working conditions of a nuclear fusion superconducting coil according to claim 2, wherein, The AI large model processing server enables a multi-signal exchanger to trigger a liquid helium circulation pipe power distribution bridge to supply power to an embedded power supply liquid helium storage tank and a liquid helium circulation pump for the liquid helium in the embedded power supply liquid helium storage tank. The liquid helium is driven by the liquid helium circulation pump and transported through a superconducting cable into a helium hose and then to the connection between the superconducting liquid helium pipe inlet female joint and the superconducting liquid helium pipe inlet male joint. Then, the liquid helium is sent to the liquid helium inlet shunt plate through the superconducting liquid helium inlet pipe and then shunted through the superconducting coil liquid helium inlet pipes into the superconducting coil insulator-like parts respectively. After that, it flows out through the superconducting coil liquid helium outlet pipe and then enters the liquid helium outlet shunt plate, and then converges in the superconducting liquid helium inlet pipe. Then, it passes through the connection between the superconducting liquid helium pipe outlet female joint and the superconducting liquid helium pipe outlet male joint and is transported out of the helium pipe through the superconducting cable liquid helium and returns to the liquid helium circulation pump. The AI large model processing server enables the multi-signal exchanger to trigger the embedded power supply in the liquid helium storage tank to supply power to the system through the power distribution bridge. After the superconducting coil insulator-like part obtains current under cryogenic working conditions, a stable superconducting magnetic field is formed.

6. The equivalent shear force detection system under multiple coupling conditions of a nuclear fusion superconducting coil according to claim 5, characterized in that, After the superconducting coil insulator-like part has a stable superconducting magnetic field under cryogenic energization conditions, the AI large model processing server supplies power to the upper bipolar magnetic field and the lower bipolar magnetic field through a multi-pole magnetic field power distribution bridge based on the data provided by the multi-signal exchanger. The superconducting coil insulator-like part floats under the action of the magnetic moments of the upper bipolar magnetic field and the lower bipolar magnetic field, and the superconducting coil electrical insulation composite material cladding undergoes magnetostriction. At the same time, the superconducting coil electrical insulation composite material cladding undergoes a volume shrinkage due to temperature changes, resulting in the derivation of internal shear forces.

7. An equivalent shear force detection system for a nuclear fusion superconducting coil under multiple coupled working conditions according to claim 5, characterized in that, The distance between the upper bipolar magnetic field and the lower bipolar magnetic field is adjusted by a multi-functional lifting and rotating mechanical support arm, so that the equivalent shear force of the superconducting coil insulator-like part in the longitudinal direction changes due to the change of the bipolar magnetic field intensity.

8. An equivalent shear force detection system for a nuclear fusion superconducting coil under multiple coupling working conditions according to claim 4, characterized in that, Under the four-pole magnetic field working condition, the AI large model processing server supplies power to the left quadrupole magnetic field, the rear quadrupole magnetic field, the right quadrupole magnetic field, and the front quadrupole magnetic field respectively through a multi-pole magnetic field power distribution bridge based on the data provided by the multi-signal exchanger. The stable superconducting magnetic field already formed by the superconducting coil insulator-like part under cryogenic energization conditions acts under the magnetic moments of the lower bipolar magnetic field and the upper bipolar magnetic field. At the same time, the stable superconducting magnetic field already formed by the superconducting coil insulator-like part under cryogenic energization conditions also interacts with the left quadrupole magnetic field, the rear quadrupole magnetic field, the right quadrupole magnetic field, and the front quadrupole magnetic field, so that the superconducting coil insulator-like part is subjected to the magnetic force coupling action of the transverse four-pole magnetic field and the longitudinal bipolar magnetic field to form an equivalent shear force.

9. The equivalent shear force detection system under multiple coupling conditions of a nuclear fusion superconducting coil according to claim 1, characterized in that, It is connected to a nuclear magnetic resonance scanner through a left neutron irradiation probe connection bearing sleeve with the left neutron irradiation probe; the left neutron irradiation probe and the right neutron irradiation probe irradiate the superconducting coil insulator-like part to complete the working condition of the superconducting coil insulator-like part being irradiated by neutrons under the action of the transverse four-pole magnetic field and the longitudinal bipolar magnetic field, so as to realize the true equivalent shear force of the superconducting coil insulator-like part under multiple working conditions of nuclear fusion reaction.

10. A system for detecting the equivalent shear force of a nuclear fusion superconducting coil under multiple coupling working conditions according to claim 1, characterized in that Under cryogenic working conditions, the temperature difference causes material strain: ， Among them, is the temperature difference, is the coefficient of thermal expansion of the material, is the elastic modulus of the material. When there is a temperature gradient or the material is constrained, is the deformation of the difference in thermal expansion, where is the displacement component, is the coordinate direction, where is the shear modulus; is the equivalent shear force.

11. The equivalent shear force detection system under multiple coupling conditions of a nuclear fusion superconducting coil according to claim 1, characterized in that, The spacing between the lower bipolar magnetic field and the upper bipolar magnetic field causes the equivalent shear force of the superconducting coil insulator-like part in the longitudinal direction to change due to the change in the bipolar magnetic field strength: , where is the equivalent shear force, K is the proportionality constant related to the electromagnetic properties of the material, ▽H is the magnetic field gradient, and J is the current density.

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