CN112197818A - Superconducting magnet performance detection equipment and method - Google Patents
Superconducting magnet performance detection equipment and method Download PDFInfo
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- CN112197818A CN112197818A CN202011387049.9A CN202011387049A CN112197818A CN 112197818 A CN112197818 A CN 112197818A CN 202011387049 A CN202011387049 A CN 202011387049A CN 112197818 A CN112197818 A CN 112197818A
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Abstract
The invention relates to the technical field of superconducting magnet equipment, and discloses superconducting magnet performance detection equipment and a method, wherein the superconducting magnet performance detection equipment comprises: the superconducting tape detection device is used for detecting the current carrying capacity and the strength capacity of the superconducting tape, and comprises a bending device and a stretcher; the magnet detection device is used for detecting the strength of the magnetic field at each position in the air gap of the superconducting magnet; the vacuum characteristic detection device is used for detecting the vacuum characteristic of the Dewar container; the device for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet is used for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet; the invention ensures the applicability of the detection equipment through the magnet detection device, can detect the magnetic fields of the air gap spaces of the superconducting magnets with different structures, and has simple structure; the superconducting magnet performance detection method applied to the equipment disclosed by the invention has the advantages that the detection process is programmed, the detection efficiency is greatly improved, and the accuracy of the device disclosed by the invention is ensured.
Description
Technical Field
The invention relates to the technical field of superconducting magnet equipment, in particular to superconducting magnet performance detection equipment and a method.
Background
The superconducting magnet is used as a core component of the superconducting equipment, and the performance of the superconducting magnet directly influences the working capacity and the service life of the superconducting equipment. Generally, the detection of the magnitude of a magnetic field when a high-temperature superconducting magnet carries current is an important index for evaluating the performance of the magnet. In addition, the high-temperature superconducting magnet works in a low-temperature and high-intensity magnetic field environment, the coil shrinks and deforms to a certain extent under the action of an electromagnetic field, and if the deformation is too large, the superconducting magnet cannot work normally, so that the strain value of the magnet during current carrying is detected, whether the deformation exceeds the allowable deformation amount of the superconducting strip is judged, and the important factor for evaluating the performance of the magnet is achieved.
The high-temperature superconducting magnet is in a closed vacuum low-temperature environment in a test, which brings great challenges to the detection of magnet parameters, and on one hand, the heat conduction performance of the superconducting magnet and the thermal uniformity of the superconducting magnet are ensured to prevent the local temperature fluctuation of the magnet. In the magnet performance detection, not only various types of physical signals such as temperature, voltage, strain, magnetic field and the like need to be acquired, but also the realization of synchronous acquisition of various parameters is a basic condition for ensuring the accuracy of data analysis and performance evaluation; meanwhile, the number of the upwelling nodes determines the accuracy of the acquired magnet performance curve, and the programmed upwelling and data monitoring are synchronously performed, so that the detection efficiency and the accuracy of the performance curve are improved.
At present, the traditional superconducting magnet performance detection device is mainly used for detecting parameters such as voltage, current, temperature and the like, only a voltage-current performance curve of a magnet can be obtained, and performance states such as magnetic field characteristics, deformation characteristics and the like of the magnet cannot be known. In addition, the loading of the magnet current is basically in a manual mode, the detection efficiency is low, and the conventional superconducting magnet performance detection equipment can only detect one piece of superconducting equipment, so that the applicability is poor.
Disclosure of Invention
The invention aims to solve the technical problems that the current carrying capacity of a superconducting tape and the strength of the superconducting tape cannot be detected in the prior art, and the conventional superconducting detection equipment has low efficiency, poor precision and poor applicability.
In order to achieve the above technical problem, the present invention provides a superconducting magnet performance detection apparatus applied to a superconducting magnet induction heating apparatus, wherein the superconducting magnet heating apparatus includes a superconducting magnet, a dewar container and a refrigerator, and the superconducting magnet includes an iron core, a coil and a superconducting tape, and the superconducting magnet performance detection apparatus includes: the superconducting tape detection device is used for detecting the current carrying capacity and the strength capacity of the superconducting tape, and comprises a bending device and a stretcher; the magnet detection device is used for detecting the strength of the magnetic field at each position in the air gap of the superconducting magnet; vacuum characteristic detection means for detecting a vacuum characteristic of the dewar vessel; the device for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet is used for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet.
Preferably, the superconducting tape inspecting apparatus further includes: the power supply unit is used for providing voltage for the superconducting tape, and the output voltage of the power supply unit is adjustable; a shunt connected to the power supply unit, and the superconducting tape is connected to the shunt; a voltmeter connected to the superconducting tape to measure a voltage of the superconducting tape; a current meter connected to the superconducting tape to measure a current of the superconducting tape.
Preferably, the magnet detecting device includes: a detection plate disposed in an air gap space of the superconducting magnet; and the Hall elements are uniformly arranged on the detection plate, and the shape formed by the Hall elements is the same as the shape of the cross section of the superconducting magnet.
Preferably, the vacuum characteristic detection device includes: a vacuum unit connected to the dewar vessel; and the composite vacuum gauge is arranged in the Dewar container.
Preferably, the apparatus for detecting thermal uniformity or thermal conductivity of the superconducting magnet includes: a cryostat disposed inside the iron core; a first thermometer disposed in the cryostat to determine a temperature of the coil; and the second thermometer is used for determining the temperature of the joint of the cold head of the refrigerator and the coil.
The invention also provides a superconducting magnet performance detection method, which is applied to the superconducting magnet performance detection equipment, and the superconducting magnet performance detection method comprises the following steps: a superconducting tape inspecting method comprising:
s1, connecting the shunt to the power supply unit, connecting the superconducting tape to the shunt, connecting the voltmeter and the ammeter to the superconducting tape, and keeping the temperature T of the superconducting tape between 72K-82K;
s2, controlling the superconducting tape detection device to perform the boosting operation on the superconducting tape;
s3, determining whether the current carrying capacity of the superconducting tape is qualified, and if the current carrying capacity of the superconducting tape is unqualified, repeating S1-S3 to detect the next superconducting tape;
s4, if the current carrying capacity of the superconducting tape is qualified, placing the superconducting tape in a liquid nitrogen environment, and waiting for the completion of cooling of the superconducting tape;
s5, the bending device bends the superconducting tape to a preset bending radius D, the step S2 is repeated until the preset bending radius D =12cm, whether the bending characteristic of the superconducting tape is qualified or not is determined, and if the bending characteristic of the superconducting tape is not qualified, the steps S1 to S5 are repeated to detect the next superconducting tape;
s6, if the bending property of the superconducting tape is qualified, the stretching device stretches the superconducting tape under a preset stress S, the step S2 is repeated until the preset stress ST =450Mpa, whether the stretching property of the superconducting tape is qualified is determined, if the stretching property of the superconducting tape is unqualified, the steps S1 to S6 are repeated to detect the next superconducting tape, and if the stretching property of the superconducting tape is qualified, the current carrying capacity and the strength capacity of the superconducting tape are determined to be qualified;
the voltage V range of the superconducting tape in the steps S1-S6 is 0-1.8 muV/cm.
Preferably, the method for detecting the performance of the superconducting magnet further comprises the following steps: the vacuum characteristic detection method comprises the following steps:
connecting the pipeline of the vacuum unit to an evacuation valve of the Dewar container, arranging a composite vacuum gauge in the Dewar container, starting the composite vacuum gauge, starting the vacuum unit, evacuating the Dewar container, stopping the vacuum unit when the composite vacuum gauge reaches a preset vacuum value, and determining that the vacuum characteristic of the Dewar container is qualified, wherein the preset vacuum value is not changed within preset time.
Preferably, the method for detecting the performance of the superconducting magnet further comprises: the method for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet comprises the following steps:
and arranging the first thermometer in the cryostat, arranging the cryostat in the iron core, controlling the temperature in the iron core to be any temperature value within the range of 20K-300K, determining the index t1 of the first thermometer and the index t2 of the second thermometer after preset time, and determining that the thermal uniformity of the superconducting magnet or the thermal conductivity of the superconducting magnet is qualified if t1-t2 is less than or equal to 30K.
Preferably, the method for detecting the performance of the superconducting magnet further comprises: a magnet detection method, comprising:
arranging the intensity detection device in an air gap of the superconducting magnet, changing the current i4 of the coil, and determining the magnetic field distribution of the superconducting magnet through the intensity detection device; or keeping the current of the coil constant, changing the structure of the iron core, and determining the strength of the magnetic field at each position in the air gap of the superconducting magnet through the strength detection device;
the range of the current i4 of the coil is 20A-140A of i 4.
Preferably, in the steps S1-S3, when the voltage representation number is 1.0 μ V/cm and the current representation number is greater than or equal to 200A, the current carrying capacity of the superconducting tape is determined to be acceptable; when the voltage representation number is 1.0 muV/cm and the current representation number is less than 200A, determining that the current carrying capacity of the superconducting tape is not qualified;
in step S5, determining the current representative number i1 when the voltage representative number is 1.0 μ V/cm and the preset bending radius D =0 cm; when the voltage representation number is 1.0 muV/cm and the preset bending radius D is any value within the range of 0cm < D ≦ 3cm, determining the current representation number i2, and if (i 1-i 2)/i 1 ≦ 5%, determining that the bending capability of the superconducting tape is qualified; if (i 1-i 2)/i 1>5%, determining that the bending ability of the superconducting tape is not qualified;
in step S6, when the voltage indicating number is 1.0 μ V/cm and the preset stress ST =405Mpa, determining the current indicating number i3, and if (i 1-i 3)/i 1 ≤ 5%, determining that the tensile characteristic of the superconducting tape is acceptable; if (i 1-i 3)/i 1>5%, the tensile properties of the superconducting tape are determined to be not satisfactory.
The invention provides superconducting magnet performance detection equipment and a method, wherein the superconducting magnet performance detection equipment comprises: the superconducting tape detection device is used for detecting the current carrying capacity and the strength capacity of the superconducting tape, and comprises a bending device and a stretcher; the magnet detection device is used for detecting the strength of the magnetic field at each position in the air gap of the superconducting magnet; the vacuum characteristic detection device is used for detecting the vacuum characteristic of the Dewar container; the device for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet is used for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet; the invention ensures the applicability of the detection equipment through the magnet detection device, can detect the magnetic fields of the air gap spaces of the superconducting magnets with different structures, and has simple structure; the superconducting magnet performance detection method applied to the equipment disclosed by the invention has the advantages that the detection process is programmed, the detection efficiency is greatly improved, and the accuracy of the device disclosed by the invention is ensured.
Drawings
FIG. 1 is a schematic view showing a connection relationship of a superconducting tape inspecting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the detection position of the magnet detecting apparatus according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a magnet detection device in an embodiment of the present invention.
In the figure, 1, a superconducting magnet; 2. a detection plate; 3. a Hall element.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 and 2, a superconducting magnet performance detecting apparatus according to a preferred embodiment of the present invention is applied to a superconducting magnet induction heating apparatus, a superconducting magnet 1 heating apparatus includes a superconducting magnet 1, a dewar container and a refrigerator, and the superconducting magnet 1 includes an iron core, a coil and a superconducting tape, and the superconducting magnet performance detecting apparatus includes: the superconducting tape detection device is used for detecting the current carrying capacity and the strength capacity of the superconducting tape, and comprises a bending device and a stretcher; a magnet detection device for detecting the strength of the magnetic field at each position in the air gap of the superconducting magnet 1; the vacuum characteristic detection device is used for detecting the vacuum characteristic of the Dewar container; the device for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet 1 is used for detecting the thermal uniformity of the superconducting magnet 1 or the thermal conductivity of the superconducting magnet 1. The invention ensures the applicability of the detection equipment through the magnet detection device, can detect the magnetic fields of the air gap spaces of the superconducting magnets 1 with different structures, and has simple structure; the performance detection method of the superconducting magnet 1 applied to the equipment disclosed by the invention has the advantages that the detection process is programmed, the detection efficiency is greatly improved, and the accuracy of the device disclosed by the invention is ensured.
Preferably, the superconducting tape inspecting apparatus further includes: the power supply unit is used for providing voltage for the superconducting tape, and the output voltage of the power supply unit is adjustable; a shunt connected to the power supply unit, and the superconducting tape connected to the shunt; a voltmeter connected to the superconducting tape to measure a voltage of the superconducting tape; and a current meter connected to the superconducting tape to measure a current of the superconducting tape.
It should be noted that the detection of the superconducting tape is realized by measuring the current carrying performance of the superconducting tape by connecting the power supply unit, the shunt, the voltmeter and the ammeter in a matching manner, and detecting the allowable deformation (or strength) of the superconducting tape, that is, the bending capability and the stretching capability of the bending device and the stretcher in a matching manner.
It should be noted here that the superconducting tape can be tested for current carrying capability at a temperature of 25K to 77K. The power supply unit is a direct-current power supply, the type of the ammeter is Keithley 2182A, and the type of the voltmeter is Keithley 2000.
Preferably, the magnet detecting device includes: a detection plate 2 disposed in an air gap space of the superconducting magnet 1; the hall elements 3 are uniformly arranged on the detection plate 2, and the shape of the hall elements 3 is the same as the cross-sectional shape of the superconducting magnet 1.
It should be noted here that the intensity of the magnetic field at each position in the air gap of the superconducting magnet 1 or the distribution of the magnetic field in the air gap is detected by uniformly arranging the plurality of hall elements 3 on the detection plate 2 and placing the detection plate 2 in the air gap space of the superconducting magnet 1. Meanwhile, the detection plate 2 is of a transparent plate-shaped structure, so that the cost is low, the applicability is high, and the shape of the Hall element 3 arranged on the detection plate 2 can be changed arbitrarily according to the shape of the superconducting magnet 1; the uniform arrangement of the hall elements 3 on the detection plate 2 avoids a situation where the magnet detection apparatus is unable to detect the magnetic field in the air gap of the superconducting magnet 1.
Preferably, the vacuum characteristic detecting means includes: the vacuum unit is connected with the Dewar container; the composite vacuum gauge is arranged in the Dewar container.
Preferably, the apparatus for detecting thermal uniformity or thermal conductivity of the superconducting magnet 1 includes: a cryostat disposed inside the iron core; a first thermometer disposed in the cryostat to determine a temperature of the coil; and the second thermometer is used for determining the temperature of the connection part of the cold head and the coil of the refrigerator.
The first thermometer is a low-temperature thermometer with the measurement accuracy within the range of 20K-300K, and the second thermometer is a conventional thermometer.
The invention also provides a superconducting magnet 1 performance detection method, which is applied to the superconducting magnet performance detection equipment, and the superconducting magnet 1 performance detection method comprises the following steps: a superconducting tape inspecting method comprising:
s1, connecting the superconducting tape to the superconducting tape detection device, and keeping the temperature T of the superconducting tape between 72K and 82K;
s2, controlling the superconducting tape detection device to perform the boosting operation on the superconducting tape;
s3, determining whether the current carrying capacity of the superconducting tape is qualified, and if the current carrying capacity of the superconducting tape is unqualified, repeating S1-S3 to detect the next superconducting tape;
s4, if the current carrying capacity of the superconducting tape is qualified, placing the superconducting tape in a liquid nitrogen environment, and waiting for the completion of cooling of the superconducting tape;
s5, the bending device bends the superconducting tape to a preset bending radius D, the step S2 is repeated until the preset bending radius D =12cm, whether the bending characteristic of the superconducting tape is qualified or not is determined, and if the bending characteristic of the superconducting tape is unqualified, the steps S1 to S5 are repeated to detect the next superconducting tape;
s6, if the bending characteristic of the superconducting tape is qualified, the stretching device stretches the superconducting tape under the preset stress S, the step S2 is repeated until the preset stress ST =450Mpa, whether the stretching characteristic of the superconducting tape is qualified is determined, if the stretching characteristic of the superconducting tape is unqualified, the steps S1 to S6 are repeated to detect the next superconducting tape, and if the stretching characteristic of the superconducting tape is qualified, the current carrying capacity and the strength capacity of the superconducting tape are determined to be qualified;
the voltage V range of the superconducting tape in the steps S1-S6 is 0-1.8 muV/cm.
Specifically, in S1, the shunt is connected to the power supply unit, the superconducting tape is connected to the shunt, the voltmeter and the ammeter are connected to the superconducting tape, and the temperature T of the superconducting tape is kept constant between 72K and 82K; in step S2, the power supply unit is controlled to perform a boosting operation on the superconducting tape; in steps S1-S3, when the number of representations of the voltage is 1.0 μ V/cm and the number of representations of the current meter is greater than or equal to 200A, determining that the current carrying capacity of the superconducting tape is acceptable; when the voltage representation number is 1.0 muV/cm and the current representation number of the ammeter is less than 200A, determining that the current carrying capacity of the superconducting tape is unqualified; in step S5, when the voltmeter representation number is 1.0 μ V/cm and the preset bending radius D =0cm, determining the current representation number i 1; when the voltmeter representation number is 1.0 muV/cm and the preset bending radius D is any value within the range of 0cm < D ≤ 3cm, determining the current representation number i2, and if (i 1-i 2)/i 1 ≤ 5%, determining that the bending capability of the superconducting tape is qualified; if (i 1-i 2)/i 1>5%, determining that the bending capability of the superconducting tape is not qualified; in step S6, when the voltmeter representation number is 1.0 μ V/cm and the preset stress ST =405MPa, determining the current representation number I3, and if (I1-I3)/I1 is less than or equal to 5%, determining that the tensile property of the superconducting tape is qualified; if (i 1-i 3)/i 1>5%, the tensile properties of the superconducting tape are determined to be unsatisfactory.
Preferably, the method for detecting the performance of the superconducting magnet 1 further comprises: a method of vacuum property detection comprising:
connecting a pipeline of a vacuum unit to an evacuation valve of a Dewar container, arranging a composite vacuum gauge in the Dewar container, starting the composite vacuum gauge, starting the vacuum unit, evacuating the Dewar container, stopping the vacuum unit after the composite vacuum gauge reaches a preset vacuum value, and determining that the vacuum characteristic of the Dewar container is qualified if the preset vacuum value is not changed within a preset time.
Preferably, the method for detecting the performance of the superconducting magnet 1 further comprises: the method for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet 1 comprises the following steps:
and arranging the first thermometer in a cryostat, arranging the cryostat in an iron core, controlling the temperature in the iron core to be any temperature value within the range of 20K-300K, determining the reading t1 of the first thermometer and the reading t2 of the second thermometer after preset time, and determining that the thermal uniformity of the superconducting magnet 1 or the heat-conducting property of the superconducting magnet 1 is qualified if t1-t2 is less than or equal to 30K.
Preferably, the method for detecting the performance of the superconducting magnet 1 further comprises: a magnet detection method, comprising:
arranging an intensity detection device in an air gap of the superconducting magnet 1, changing the current i4 of a coil, and determining the magnetic field distribution of the superconducting magnet 1 through the intensity detection device; or keeping the current of the coil constant, changing the structure of the iron core, and determining the strength of the magnetic field at each position in the air gap of the superconducting magnet 1 through a strength detection device; the range of the current i4 of the coil is 20A to i4 to 140A.
To sum up, the embodiment of the present invention provides a superconducting magnet performance detection apparatus and a method thereof, where the superconducting magnet performance detection apparatus includes: the superconducting tape detection device is used for detecting the current carrying capacity and the strength capacity of the superconducting tape, and comprises a bending device and a stretcher; a magnet detection device for detecting the strength of the magnetic field at each position in the air gap of the superconducting magnet 1; the vacuum characteristic detection device is used for detecting the vacuum characteristic of the Dewar container; the device for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet 1 is used for detecting the thermal uniformity of the superconducting magnet 1 or the thermal conductivity of the superconducting magnet 1; the invention ensures the applicability of the detection equipment through the magnet detection device, can detect the magnetic fields of the air gap spaces of the superconducting magnets 1 with different structures, and has simple structure; the performance detection method of the superconducting magnet 1 applied to the equipment disclosed by the invention has the advantages that the detection process is programmed, the detection efficiency is greatly improved, and the accuracy of the device disclosed by the invention is ensured.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A superconducting magnet performance detection apparatus applied to a superconducting magnet induction heating apparatus, the superconducting magnet heating apparatus comprising a superconducting magnet, a Dewar container and a refrigerator, and the superconducting magnet comprising an iron core, a coil and a superconducting tape, the superconducting magnet performance detection apparatus comprising:
the superconducting tape detection device is used for detecting the current carrying capacity and the strength capacity of the superconducting tape, and comprises a bending device and a stretcher;
the magnet detection device is used for detecting the strength of the magnetic field at each position in the air gap of the superconducting magnet;
vacuum characteristic detection means for detecting a vacuum characteristic of the dewar vessel;
the device for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet is used for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet.
2. The superconducting magnet performance detecting apparatus according to claim 1, wherein the superconducting tape detecting device further comprises:
the power supply unit is used for providing voltage for the superconducting tape, and the output voltage of the power supply unit is adjustable;
a shunt connected to the power supply unit, and the superconducting tape is connected to the shunt;
a voltmeter connected to the superconducting tape to measure a voltage of the superconducting tape;
a current meter connected to the superconducting tape to measure a current of the superconducting tape.
3. The superconducting magnet performance detecting apparatus according to claim 2, wherein the magnet detecting means comprises:
a detection plate disposed in an air gap space of the superconducting magnet;
and the Hall elements are uniformly arranged on the detection plate, and the shape formed by the Hall elements is the same as the shape of the cross section of the superconducting magnet.
4. The superconducting magnet performance detecting apparatus according to claim 3, wherein the vacuum characteristic detecting device includes:
a vacuum unit connected to the dewar vessel;
and the composite vacuum gauge is arranged in the Dewar container.
5. The superconducting magnet performance detecting apparatus according to claim 4, wherein the superconducting magnet thermal uniformity or thermal conductivity detecting means comprises:
a cryostat disposed inside the iron core;
a first thermometer disposed in the cryostat to determine a temperature of the coil;
and the second thermometer is used for determining the temperature of the joint of the cold head of the refrigerator and the coil.
6. A superconducting magnet performance detection method applied to the superconducting magnet performance detection apparatus according to claim 5, the superconducting magnet performance detection method comprising:
a superconducting tape inspecting method comprising:
s1, connecting the superconducting tape to the superconducting tape detection device, and keeping the temperature T of the superconducting tape between 72K and 82K;
s2, controlling the superconducting tape detection device to perform the boosting operation on the superconducting tape;
s3, determining whether the current carrying capacity of the superconducting tape is qualified, and if the current carrying capacity of the superconducting tape is unqualified, repeating S1-S3 to detect the next superconducting tape;
s4, if the current carrying capacity of the superconducting tape is qualified, placing the superconducting tape in a liquid nitrogen environment, and waiting for the completion of cooling of the superconducting tape;
s5, the bending device bends the superconducting tape to a preset bending radius D, the step S2 is repeated until the preset bending radius D =12cm, whether the bending characteristic of the superconducting tape is qualified or not is determined, and if the bending characteristic of the superconducting tape is not qualified, the steps S1 to S5 are repeated to detect the next superconducting tape;
s6, if the bending property of the superconducting tape is qualified, the stretching device stretches the superconducting tape under a preset stress S, the step S2 is repeated until the preset stress ST =450Mpa, whether the stretching property of the superconducting tape is qualified is determined, if the stretching property of the superconducting tape is unqualified, the steps S1 to S6 are repeated to detect the next superconducting tape, and if the stretching property of the superconducting tape is qualified, the current carrying capacity and the strength capacity of the superconducting tape are determined to be qualified;
the voltage V range of the superconducting tape in the steps S1-S6 is 0-1.8 muV/cm.
7. The superconducting magnet performance detection method according to claim 6, further comprising:
a method of vacuum property detection comprising:
connecting the pipeline of the vacuum unit to an evacuation valve of the Dewar container, arranging a composite vacuum gauge in the Dewar container, starting the composite vacuum gauge, starting the vacuum unit, evacuating the Dewar container, stopping the vacuum unit when the composite vacuum gauge reaches a preset vacuum value, and determining that the vacuum characteristic of the Dewar container is qualified, wherein the preset vacuum value is not changed within preset time.
8. The superconducting magnet performance detection method according to claim 6, further comprising:
the method for detecting the thermal uniformity or the thermal conductivity of the superconducting magnet comprises the following steps:
and arranging the first thermometer in the cryostat, arranging the cryostat in the iron core, controlling the temperature in the iron core to be any temperature value within the range of 20K-300K, determining the index t1 of the first thermometer and the index t2 of the second thermometer after preset time, and determining that the thermal uniformity of the superconducting magnet or the thermal conductivity of the superconducting magnet is qualified if t1-t2 is less than or equal to 30K.
9. The superconducting magnet performance detection method according to claim 6, further comprising:
a magnet detection method, comprising:
arranging the intensity detection device in an air gap of the superconducting magnet, changing the current i4 of the coil, and determining the magnetic field distribution of the superconducting magnet through the intensity detection device; or keeping the current of the coil constant, changing the structure of the iron core, and determining the strength of the magnetic field at each position in the air gap of the superconducting magnet through the strength detection device;
the range of the current I4 of the coil is 20A-140A of I4.
10. The superconducting magnet performance detecting method according to claim 6, wherein in steps S1-S3, when the voltmeter representation is 1.0 μ V/cm and the ammeter representation is greater than or equal to 200A, the current carrying capacity of the superconducting tape is determined to be acceptable; when the voltage representation number is 1.0 muV/cm and the current representation number is less than 200A, determining that the current carrying capacity of the superconducting tape is not qualified;
in step S5, determining the current representative number i1 when the voltage representative number is 1.0 μ V/cm and the preset bending radius D =0 cm; when the voltage representation number is 1.0 muV/cm and the preset bending radius D is any value within the range of 0cm < D ≦ 3cm, determining the current representation number i2, and if (i 1-i 2)/i 1 ≦ 5%, determining that the bending capability of the superconducting tape is qualified; if (i 1-i 2)/i 1>5%, determining that the bending ability of the superconducting tape is not qualified;
in step S6, when the voltage indicating number is 1.0 μ V/cm and the preset stress ST =405Mpa, determining the current indicating number i3, and if (i 1-i 3)/i 1 ≤ 5%, determining that the tensile characteristic of the superconducting tape is acceptable; if (i 1-i 3)/i 1>5%, the tensile properties of the superconducting tape are determined to be not satisfactory.
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