CN-122017695-A - Superconducting wire performance detection equipment and system

CN122017695ACN 122017695 ACN122017695 ACN 122017695ACN-122017695-A

Abstract

The application provides superconducting linear energy detection equipment and a system, which relate to the field of superconducting wire detection, wherein the superconducting linear energy detection system comprises detection equipment and a monitoring terminal, the detection equipment comprises a detection container and a temperature detection device, the detection container forms a plurality of shielding layers, an inner shielding layer in the shielding layers is used for accommodating a superconducting wire, a low-temperature magnetic field environment suitable for detecting the performance of the superconducting wire is established in the inner shielding layer, the temperature detection device comprises a plurality of sensor units, the sensor units are distributed in different areas and generate temperature detection signals, the monitoring terminal is used for determining temperature change gradients of the superconducting wire in different directions, and obtaining a cold conduction path parameter of the superconducting wire according to the temperature change gradients and a gradient entropy optimization algorithm, and the monitoring terminal determines critical current flowing through the superconducting wire according to the cold conduction path parameter. Through the arrangement, the cost for detecting the cold conduction performance, the thermal stability and the cold shielding effectiveness of the magnet of the superconducting wire is reduced, and the risk of damage of the superconducting magnet is reduced.

Inventors

ZHU LIANG
ZHANG YING
HOU YIFAN
NIU JIAZHEN
WU ZHIBIN

Assignees

浙江晶盛机电股份有限公司
杭州慧翔电液技术开发有限公司

Dates

Publication Date: 20260512
Application Date: 20251202

Claims (10)

1. Superconducting linear energy detection system, characterized in that it comprises a detection device (11) and a monitoring terminal (12) connected to said detection device (11), said detection device (11) comprising: A detection container (111) for establishing a vacuum detection environment, the detection container (111) forming a plurality of shielding layers (1111) which are isolated from each other from inside to outside to isolate an external magnetic field and external heat, an inner shielding layer (1111 a) of the plurality of shielding layers (1111) being used for accommodating a superconducting wire (101), and a low-temperature magnetic field environment suitable for detecting the performance of the superconducting wire (101) being established in the inner shielding layer (1111 a); a temperature detection device (112) comprising a plurality of sensor units (1121), the plurality of sensor units (1121) being distributed in different areas in the inner shielding layer (1111 a) and generating a temperature detection signal according to the temperature of the corresponding area; The monitoring terminal (12) is used for determining temperature change gradients of the superconducting wire (101) in different directions according to the temperature detection signals, obtaining a cold conduction path parameter of the superconducting wire (101) according to the temperature change gradients and a gradient entropy optimization algorithm, and the monitoring terminal (12) is used for determining critical current flowing through the superconducting wire (101) according to the cold conduction path parameter.
2. The superconducting linear energy detection system of claim 1 wherein, The monitoring terminal (12) is used for determining the area with the highest temperature in the inner shielding layer (1111 a) according to the temperature detection signal so as to determine the highest temperature in the inner shielding layer (1111 a), and the monitoring terminal (12) is used for determining the current state of the superconducting wire (101) according to the ratio of the highest temperature to the critical temperature of the superconducting wire (101) and triggering a corresponding emergency protection mechanism according to the current state.
3. The superconducting linear energy detection system of claim 2 wherein, If the ratio is greater than a first preset threshold and not greater than a second preset threshold, the current state is an alarm state; and in the alarm state, the monitoring terminal (12) determines the adjustment proportion of the current flowing through the superconducting wire (101) based on a pre-established current adjustment algorithm, wherein the monitoring terminal (12) determines the adjustment proportion by adjusting an adjustment factor in the current adjustment algorithm, the value of the adjustment factor is in a proportional relation with a reference threshold, and the reference threshold is the difference value between the product of the second preset threshold and the critical temperature and the highest temperature.
4. The superconducting linear energy detection system of claim 3 wherein, The current regulation algorithm regulates the current output by the monitoring terminal (12) to the superconducting wire (101) based on a preset current change rate, wherein the current change rate meets the following relation that di/dt is less than or equal to 0.01A/s and less than or equal to 0.05A/s; Wherein i represents a current flowing through the superconducting wire (101), and t represents a unit time.
5. The superconducting linear energy detection system of claim 3 wherein, And if the ratio is greater than the second preset threshold, the current state is a quench state, and when the quench state is reached, the monitoring terminal (12) triggers shutdown protection, wherein the shutdown protection comprises: The monitoring terminal (12) locates the position with the maximum heat flux density in the superconducting wire (101) according to the parameter of the cold conduction path, and generates corresponding hot spot coordinates according to the position; The temperature in the inner shielding layer (1111 a) is reduced based on the monitoring terminal (12).
6. The superconducting linear energy detection system of claim 1 wherein, The detection device (11) further comprises a temperature control device (113) which is arranged in the inner shielding layer (1111 a) and is connected with the monitoring terminal (12), and the temperature control device (113) is used for receiving a temperature adjustment signal sent by the monitoring terminal (12) so as to adjust the temperature in the inner shielding layer (1111 a).
7. The superconducting linear energy detection system of claim 5 wherein, The temperature control device (113) comprises a refrigerator (1131), a temperature control assembly (1132) connected with the refrigerator (1131) and a cold guide substrate (1133) connected with the temperature control assembly (1132), wherein the cold guide substrate (1133) extends along the height direction of the detection container (111), and a plurality of the cold guide substrates (1133) are connected through a parallel line cabin assembly (1134) positioned below the cold guide substrates, so that a plurality of the cold guide substrates (1133) are arranged in parallel line.
8. The superconducting linear energy detection system of claim 1 wherein, The detection device (11) comprises a magnetic field generating device (114) which is arranged in the inner shielding layer (1111 a) and is connected with the monitoring terminal (12), the magnetic field generating device (114) is used for receiving a magnetic field adjusting signal sent by the monitoring terminal (12) so as to adjust the magnetic field intensity in the low-temperature magnetic field environment, and the monitoring terminal (12) is also used for adjusting the current output to the superconducting wire so as to determine the critical current of the superconducting wire (101) under different magnetic field intensities and/or different winding modes.
9. The superconducting linear energy detection system of claim 1 wherein, The cold conduction path parameters comprise at least one of contact thermal resistance, cold conduction efficiency and heating point.
10. A superconducting linear energy detecting device (11), characterized by comprising: A detection container (111) for establishing a vacuum detection environment, the detection container (111) forming a plurality of shielding layers (1111) which are isolated from each other from inside to outside to isolate an external magnetic field and external heat, an inner shielding layer (1111 a) of the plurality of shielding layers (1111) being used for accommodating a superconducting wire (101), and a low-temperature magnetic field environment suitable for detecting the performance of the superconducting wire (101) being established in the inner shielding layer (1111 a); A temperature detection device (112) comprising a plurality of sensor units (1121), the plurality of sensor units (1121) being distributed in different areas in the inner shielding layer (1111 a) and generating temperature detection signals according to the temperatures of the corresponding areas, the temperature detection signals being used for indicating the temperature variation gradients of the superconducting wire (101) in different directions, the temperature detection signals being further used for determining the area with the highest temperature in the inner shielding layer (1111 a) to determine the highest temperature in the inner shielding layer (1111 a); a temperature control device (113) provided in the inner shield layer (1111 a) and adjusting the temperature in the inner shield layer (1111 a); The temperature control device (113) is further used for receiving a temperature adjustment signal sent by the monitoring terminal (12), wherein the temperature adjustment signal is used for indicating the current state of the superconducting wire (101) and controlling the temperature control device (113) to execute an emergency protection mechanism corresponding to the current state, and the current state is determined according to the ratio of the highest temperature to the critical temperature of the superconducting wire (101).

Description

Superconducting wire performance detection equipment and system Technical Field The application relates to the field of superconducting wire detection, in particular to superconducting linear energy detection equipment and a system. Background The superconducting magnet is a strong magnetic field device made of superconducting materials with zero resistance, and the core structure of the superconducting magnet comprises superconducting wires made of superconducting materials and a magnet body for accommodating the superconducting wires. The temperature, the current and the magnetic field required by the superconducting wire to maintain the superconducting state all meet the conditions, the temperature, the current and the magnetic field can be correspondingly changed in the working engineering of the superconducting magnet, and if any one of the temperature, the current and the magnetic field of the superconducting wire does not meet the conditions, the superconducting wire can be quenched, so that the superconducting magnet is damaged. If the superconducting wire is detected to verify the cold conduction performance, the thermal stability and the magnetic cold shielding effectiveness of the superconducting wire, the superconducting wire needs to be disassembled from the superconducting magnet, and the superconducting magnet is very difficult to disassemble after being packaged due to the vacuum insulation packaging structure of the superconducting magnet, so that higher cost is required for each detection. Disclosure of Invention In order to solve the defects in the prior art, the application aims to provide superconducting linear energy detection equipment and system, which can reduce the cost for detecting the cold conduction performance, the thermal stability and the cold shielding effectiveness of a magnet of a superconducting wire and reduce the risk of damaging the superconducting magnet. In order to achieve the above purpose, the present application adopts the following technical scheme: In a first aspect, the application provides a superconducting linear energy detection system, which comprises a detection device and a monitoring terminal connected with the detection device, wherein the detection device comprises a detection container and a temperature detection device, the detection container is used for establishing a vacuum detection environment, the detection container forms a plurality of shielding layers which are isolated from each other from inside to outside so as to isolate an external magnetic field and external heat, the inner shielding layers in the shielding layers are used for accommodating superconducting wires, a low-temperature magnetic field environment suitable for detecting the performance of the superconducting wires is established in the inner shielding layers, the temperature detection device comprises a plurality of sensor units, the sensor units are distributed in different areas in the inner shielding layers, temperature detection signals are generated according to the temperatures of the corresponding areas, the monitoring terminal is used for determining temperature change gradients of the superconducting wires in different directions according to the temperature detection signals, and obtaining the cold conduction path parameters of the superconducting wires according to the temperature change gradients in combination with a gradient entropy optimization algorithm, and the monitoring terminal determines critical currents flowing through the superconducting wires according to the cold conduction path parameters. In some embodiments, the monitoring terminal is used for determining the highest temperature area in the inner shielding layer according to the temperature detection signal so as to determine the highest temperature in the inner shielding layer, determining the current state of the superconducting wire according to the ratio of the highest temperature to the critical temperature of the superconducting wire, and triggering a corresponding emergency protection mechanism according to the current state. In some embodiments, if the ratio is greater than the first preset threshold and not greater than the second preset threshold, the current state is an alert state; and in an alarm state, the monitoring terminal determines the regulation proportion of the current flowing through the superconducting wire based on a pre-established current regulation algorithm, wherein the monitoring terminal determines the regulation proportion by regulating a regulation factor in the current regulation algorithm, the value of the regulation factor is in a proportional relation with a reference threshold, and the reference threshold is the difference value between the product of the second preset threshold and the critical temperature and the highest temperature. In some embodiments, the current regulation algorithm adjusts the current output by the monitoring terminal to the supercond