CN116052976A - Coil device of superconducting magnet and control method thereof - Google Patents
Coil device of superconducting magnet and control method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000006073 displacement reaction Methods 0.000 claims abstract description 99
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 239000003507 refrigerant Substances 0.000 claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims description 30
- 238000005057 refrigeration Methods 0.000 claims description 26
- 230000000630 rising effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010791 quenching Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The application discloses a coil device of a superconducting magnet and a control method thereof, and relates to the technical field of superconducting magnets, wherein the coil device comprises a first shell, a refrigerant is filled in the first shell, an isolation cavity is further formed in the top of the first shell, and a pressure sensor is arranged in the isolation cavity; the supporting element is arranged in the first shell, the top of the supporting element penetrates into the isolation cavity and is connected with the pressure sensor, and the side part of the supporting element is sleeved with the coil; the pair of elastic rods are arranged at the side parts of the coil and penetrate through the first shell upwards; the displacement sensor is arranged outside the first shell and is connected with the end head of the elastic rod; the refrigerating mechanism is arranged in the first shell and used for cooling the refrigerant, and the running speed of the refrigerating mechanism is adjusted according to the information detected by the displacement sensor and the pressure sensor, so that the effective cooling of the superconducting magnet is ensured, the occurrence of the quench problem is avoided, and excessive energy consumption is avoided.
Description
Technical Field
The invention relates to the technical field of superconducting magnets, in particular to a coil device of a superconducting magnet and a control method thereof.
Background
Superconducting magnets refer to an electromagnet having coils made of a second type of superconductor having a high transition temperature and a particularly high critical magnetic field at low temperatures. The main characteristic is that there is no electric loss caused by the wire resistance, there is no magnetic loss caused by the existence of iron core, and it has very strong practical value.
When the superconducting magnet is electrified, the coil generates axial electromagnetic force and radial electromagnetic force, the coil is arranged on the supporting element, the supporting element is used for resisting the axial electromagnetic force, but due to the fact that a gap possibly exists between the coil and the supporting element, the coil moves relative to the supporting element, the radial electromagnetic force is supported by the hoop stress of the coil, hoop strain and radial expansion of the coil are generated, the coil can move relative to the supporting element due to the fact that the coil moves relative to the supporting element, friction heat is generated between the coil and the supporting element, and therefore the magnet of the superconducting magnet is unstable.
Disclosure of Invention
The invention aims to provide a coil device capable of effectively improving the stability of a magnet and a control method.
The present invention therefore discloses a coil arrangement for a superconducting magnet, comprising:
the first shell is internally filled with refrigerant, an isolation cavity is further formed in the top of the first shell, and a pressure sensor is arranged in the isolation cavity;
the supporting element is arranged in the first shell, the top of the supporting element penetrates into the isolation cavity and is connected with the pressure sensor, and the side part of the supporting element is sleeved with a coil;
a pair of elastic rods arranged at the side parts of the coil and penetrating through the first shell upwards;
the displacement sensor is arranged outside the first shell and is connected with the end head of the elastic rod;
the refrigeration mechanism is arranged in the first shell and used for cooling the refrigerant.
In some embodiments of the present application, in order to enable the end of the elastic rod to move close to each other, the first casing is improved, the first casing corresponds to the position of the isolation cavity is provided with a spacing cavity, the elastic rod penetrates through the isolation cavity and stretches out of the first casing, the side portion of the elastic rod corresponds to the position of the spacing cavity is provided with a spacing slider, and the spacing slider slides in the spacing cavity in a spacing manner.
In some embodiments of the present application, in order to reduce the influence of an external heat source on the inside of the first housing, the vacuum chamber is formed between the first housing and the second housing, the first housing is disposed inside the second housing, and the first housing and the second housing are connected through a heat insulating block.
In some embodiments of the present application, there is also disclosed a control method of a coil device of a super-magnetic conductor, the control method including:
acquiring displacement information acquired by a displacement sensor;
establishing a displacement curve generation model, wherein the displacement curve generation model generates a displacement change curve according to the displacement information, and the abscissa of the displacement change curve is time and the ordinate is a real-time displacement value;
establishing a refrigeration power corresponding rule, carrying out scanning analysis on the displacement change curve to determine a first curve characteristic, and analyzing the first curve characteristic according to the refrigeration power corresponding rule to determine a first running power;
and driving the refrigeration mechanism according to the first operation power.
In some embodiments of the present application, a method for applying a refrigeration power correspondence rule is disclosed, and the method for determining a first operation power according to the refrigeration power correspondence rule includes:
acquiring a first curve characteristic, wherein the first curve characteristic comprises a curve rising amplitude, a curve fluctuation state and a real-time displacement value, and if the curve rising amplitude and the curve fluctuation state of the displacement change curve reach preset standards, calculating an average value of a plurality of real-time displacement values to obtain an average displacement value;
a plurality of preset displacement sections are set, and a first power expression coefficient is determined and obtained according to the preset displacement sections to which the average displacement value belongs;
and determining the first running power according to the first power expression coefficient and the average displacement value.
In some embodiments of the present application, an expression is disclosed for determining a first operating power, the first operating power expression for determining the first operating power comprising:
wherein ,
for the first operating power, +.>
For the ith first power expression coefficient, x is the average displacement value.
In some embodiments of the present application, in order to enable the refrigeration mechanism to refrigerate a refrigerant with more reasonable power, the method is improved, further comprising:
acquiring pressure information acquired by a pressure sensor;
establishing a pressure curve generation model, and generating a pressure change curve according to the pressure information, wherein the abscissa of the pressure change curve is time, and the ordinate is a real-time pressure value;
scanning and analyzing the pressure change curve to determine a second curve characteristic, analyzing the second curve characteristic according to the refrigerating power corresponding rule, correcting the first operating power according to an analysis result, and determining a second operating power;
and driving the refrigeration mechanism according to the second operation power.
In some embodiments of the present application, a method for determining a second operating power according to a refrigeration power correspondence rule is disclosed, where the method for determining the second operating power according to the refrigeration power correspondence rule includes:
acquiring a second curve characteristic, wherein the second curve characteristic comprises a curve rising amplitude, a curve fluctuation state and a real-time pressure value, and if the rising amplitude and the curve fluctuation state of the pressure change curve reach preset standards, calculating the real-time pressure value to obtain an average pressure value;
a plurality of preset pressure sections are set, and a second power expression coefficient is determined and obtained according to the preset pressure sections to which the average pressure value belongs;
and determining a second operation power according to the second power expression coefficient and the average pressure value.
In some embodiments of the present application, an expression is disclosed for determining a second motion power, the second operation power expression for determining the second operation power comprising:
wherein ,
for the second operating power, +.>
For the ith first power expression coefficient, t is the mean pressure value, +.>
Is the q second power expression coefficient.
In some embodiments of the present application, in order to be able to determine a first power expression coefficient and a second power expression coefficient, a method is disclosed, the method of determining the first power expression coefficient comprising:
setting a corresponding group X0[ X1, X2, X3, …, xn ] of displacement sections, wherein X1 is a first preset displacement value, X2 is a second preset displacement value, X3 is a third preset displacement value, xn is an nth preset displacement value, and X1 is more than X2 and less than X3 and less than … and less than Xn;
setting a first power expression coefficient corresponding group K0[ K1, K2, K3, …, kn ], wherein K1 is a first displacement preset expression coefficient, K2 is a second displacement preset expression coefficient, K3 is a third displacement preset expression coefficient, and Kn is an nth displacement preset expression coefficient;
obtaining an average displacement value x;
if X is less than or equal to X1, determining K1 as a first power expression coefficient;
if X1 is more than or equal to X2, determining K2 as a first power expression coefficient;
if X2 is more than or equal to X3, determining K3 as a first power expression coefficient;
…；
if Xn-1 is more than x and less than or equal to Xn, determining Kn as a first power expression coefficient;
the method for determining the second power expression coefficient comprises the following steps:
setting a corresponding group T0[ T1, T2, T3, …, tn ] of pressure sections, wherein T1 is a first preset pressure value, T2 is a second preset pressure value, T3 is a third preset pressure value, and Tn is an nth preset pressure value;
setting a second power expression coefficient corresponding group K00[ K11, K22, K33, … and Knn ], wherein K11 is a first pressure preset expression coefficient, K22 is a second pressure preset expression coefficient, K33 is a third pressure preset expression coefficient, knn is an nth pressure preset expression coefficient, K11 is more than K22 and less than K33 is more than … and less than Knn;
obtaining an average pressure value t;
if T is less than or equal to T1, determining K11 as a second power expression coefficient;
if T1 is more than T and less than or equal to T2, determining K22 as a second power expression coefficient;
if T2 is more than or equal to T3, determining K33 as a second power expression coefficient;
…；
if Tn-1 is less than t and less than or equal to Tn, determining Knn as a second power expression coefficient.
The coil device of the superconducting magnet disclosed by the application has the following advantages compared with a conventional superconducting coil device:
the first shell is internally filled with refrigerant, the temperature is reduced by the refrigerant mechanism, the supporting element is arranged in the first shell, the coil is arranged on the supporting element and is further reduced by the refrigerant, so that the coil maintains superconducting property, the side part of the coil is provided with an elastic rod, the end head of the elastic rod penetrates out of the first shell, the elastic rod is influenced by the coil in the deformation or movement process of the coil, the end head moves, the relative displacement of the end head of the elastic rod is collected by the displacement sensor, the deformation or movement condition of the coil is judged, and based on the phenomenon, the power of the refrigerant mechanism is adjusted for the first time, the quench problem caused by the temperature rise of the coil is effectively prevented, and the excessive consumption of energy is reduced; under the working state of the coil, the coil can be influenced by the reaction force, and the coil can axially move or deform, and in the process, heat generated by friction is still possible, so that the supporting element is in butt joint with the pressure sensor, the degree of the axial movement or deformation of the coil is judged through data acquired by the pressure sensor, and the parameter of the power of the first-time adjustment refrigerating mechanism is corrected, so that the driving power of the refrigerating mechanism is determined more accurately.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic structural view of a coil device of a superconducting magnet according to an embodiment of the present application;
FIG. 2 is a diagram of steps in a method for determining a first operating power according to an embodiment of the present application;
fig. 3 is a diagram of a method step for determining a second operating power in an embodiment of the present application.
Reference numerals
1. A first housing; 2. a refrigerant; 3. a pressure sensor; 4. a support element; 5. an elastic rod; 6. a displacement sensor; 7. a refrigeration mechanism; 8. a second housing; 9. a vacuum chamber; 10. a coil; 11. a spacing cavity; 12. a limit sliding block; 13. isolating the cavity.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments, it being understood that the preferred embodiments described herein are for illustrating and explaining the present invention only and are not to be construed as limiting the scope of the present invention, and that some insubstantial modifications and adaptations can be made by those skilled in the art in light of the following disclosure. In the present invention, unless explicitly specified and defined otherwise, technical terms used in the present application should be construed in a general sense as understood by those skilled in the art to which the present invention pertains. The terms "connected," "fixedly," "disposed" and the like are to be construed broadly and may be fixedly connected, detachably connected or integrally formed; can be directly connected or indirectly connected through an intermediate medium; either mechanically or electrically. Unless explicitly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above" or "over" or "upper" a second feature may be a first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under" or "beneath" or "under" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is level less than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Examples:
the invention aims to provide a coil device capable of effectively improving the stability of a magnet and a control method.
The present invention thus discloses a coil arrangement of a superconducting magnet, referring to fig. 1, comprising: the first housing 1, the support member 4, the pair of elastic rods 5, the displacement sensor 6, and the refrigeration mechanism 7.
The first shell 1 is internally filled with a refrigerant 2, an isolation cavity 13 is further formed in the top of the first shell 1, and a pressure sensor 3 is arranged in the isolation cavity 13.
The supporting element 4 is arranged inside the first shell 1, the top of the supporting element penetrates into the isolation cavity, the supporting element is connected with the pressure sensor 3, and the side part of the supporting element is sleeved with the coil 10.
The elastic rod 5 is disposed at the side of the coil 10 and penetrates the first housing 1 upward.
The displacement sensor 6 is disposed outside the first housing 1 and connected to the end of the elastic rod 5.
The refrigeration mechanism 7 is disposed in the first housing 1 and is used for cooling the refrigerant 2.
In some embodiments of the present application, in order to enable the end of the elastic rod 5 to move close to each other, the first housing 1 is improved, a position of the first housing 1 corresponding to the isolation cavity is provided with a limiting cavity, the elastic rod 5 penetrates through the isolation cavity and extends out of the first housing 1, a position of a side portion of the elastic rod 5 corresponding to the limiting cavity 11 is provided with a limiting slider 12, and the limiting slider 12 slides in the limiting cavity 11 in a limiting manner.
In some embodiments of the present application, in order to reduce the influence of an external heat source on the inside of the first housing 1, the heat pump further comprises a second housing 8, the first housing 1 is disposed inside the second housing 8, the first housing 1 and the second housing 8 are connected through a heat insulation block, and a vacuum cavity 9 is formed between the first housing 1 and the second housing 8.
In some embodiments of the present application, a control method of a coil device of a super-magnetic conductor is also disclosed, referring to fig. 2, the control method includes:
step S100, obtaining displacement information acquired by a displacement sensor.
It should be understood that the displacement sensor is used for detecting the distance between the ends of the elastic rods, when the coil is stressed radially, the radial change of the coil drives the elastic rods to follow the movement generated by the change of the coil, so that the ends of the elastic rods are gradually approaching, in the process, the elastic rods deform, but the deformation degree corresponds to the radial change of the coil, so that the distance between the ends of the elastic rods approaching to each other corresponds to the radial change degree of the coil.
Step S200, a displacement curve generation model is established, the displacement curve generation model generates a displacement change curve according to the displacement information, and the abscissa of the displacement change curve is time and the ordinate is a real-time displacement value.
It is to be understood that the displacement curve generation model is a program running on the intelligent terminal device, and generates a displacement change curve by analyzing signals acquired by the displacement sensor.
And step S300, a refrigerating power corresponding rule is established, scanning analysis is carried out on the displacement change curve, a first curve characteristic is determined, and analysis is carried out on the first curve characteristic according to the refrigerating power corresponding rule, so that a first running power is determined.
It is to be understood that the first curve characteristic includes a curve fluctuation state and a real-time pressure value.
And step S400, driving the refrigeration mechanism according to the first operation power.
In some embodiments of the present application, a method for applying a refrigeration power correspondence rule is disclosed, and the method for determining a first operation power according to the refrigeration power correspondence rule includes:
the method comprises the steps of obtaining a first curve characteristic, wherein the first curve characteristic comprises a curve rising amplitude, a curve fluctuation state and a real-time displacement value, and if the curve rising amplitude and the curve fluctuation state of a displacement change curve reach preset standards, calculating an average value of a plurality of real-time displacement values to obtain an average displacement value.
It should be understood that the curve fluctuation state reaching the preset standard includes: the up-and-down fluctuation of the curve occurs continuously for a preset number of times.
And secondly, setting a plurality of preset displacement sections, and determining and obtaining a first power expression coefficient according to the preset displacement sections to which the average displacement value belongs.
And thirdly, determining the first running power according to the first power expression coefficient and the average displacement value.
In some embodiments of the present application, an expression is disclosed for determining a first operating power, the first operating power expression for determining the first operating power comprising:
wherein ,
for the first operating power, +.>
For the ith first power expression coefficient, x is the average displacement value.
In some embodiments of the present application, in order to enable the refrigeration mechanism to refrigerate a refrigerant with more reasonable power, the method is improved, referring to fig. 3, further including:
s500, acquiring pressure information acquired by the pressure sensor.
It should be understood that when the superconducting magnet is affected by the axial reaction, the coil is subjected to more pressure in the axial direction, so that axial movement and deformation are generated, and the pressure born by the coil in the axial direction is judged according to the pressure information acquired by the pressure sensor.
And S600, establishing a pressure curve generation model, and generating a pressure change curve according to the pressure information, wherein the abscissa of the pressure change curve is time, and the ordinate is a real-time pressure value.
It is to be understood that the pressure curve generation model is a program running on the intelligent terminal device and is used for generating a pressure change curve according to the pressure information.
And S700, scanning and analyzing the pressure change curve to determine a second curve characteristic, analyzing the second curve characteristic according to the refrigerating power corresponding rule, correcting the first operating power according to an analysis result, and determining a second operating power.
It is to be understood that the second curve characteristic includes a curve rise amplitude, a curve fluctuation state, and a real-time pressure value.
S800, driving the refrigeration mechanism according to the second operation power.
In some embodiments of the present application, a method for determining a second operating power according to a refrigeration power correspondence rule is disclosed, where the method for determining the second operating power according to the refrigeration power correspondence rule includes:
the method comprises the steps of obtaining a second curve characteristic, wherein the second curve characteristic comprises a curve rising amplitude, a curve fluctuation state and a real-time pressure value, and if the rising amplitude and the curve fluctuation state of the pressure change curve reach preset standards, calculating the real-time pressure value to obtain an average pressure value.
It should be understood that the curve fluctuation state reaching the preset standard includes: the up-and-down fluctuation of the curve occurs continuously for a preset number of times.
And secondly, setting a plurality of preset pressure sections, and determining and obtaining a second power expression coefficient according to the preset pressure sections to which the average pressure value belongs.
And thirdly, determining a second operation power according to the second power expression coefficient and the average pressure value.
In some embodiments of the present application, an expression is disclosed for determining a second motion power, the second operation power expression for determining the second operation power comprising:
wherein ,
for the second operating power, +.>
For the ith first power expression coefficient, t is the mean pressure value, +.>
Is the q second power expression coefficient.
In some embodiments of the present application, in order to be able to determine a first power expression coefficient and a second power expression coefficient, a method is disclosed, the method of determining the first power expression coefficient comprising:
in the first step, a corresponding group X0[ X1, X2, X3, …, xn ] of displacement sections is set, wherein X1 is a first preset displacement value, X2 is a second preset displacement value, X3 is a third preset displacement value, xn is an nth preset displacement value, and X1 is more than X2 and less than X3 and less than … and less than Xn.
And secondly, setting a corresponding group K0[ K1, K2, K3, … and Kn ] of the first power expression coefficient, wherein K1 is a first displacement preset expression coefficient, K2 is a second displacement preset expression coefficient, K3 is a third displacement preset expression coefficient, and Kn is an nth displacement preset expression coefficient.
And thirdly, judging the first power expression coefficient.
An average displacement value x is obtained.
If X is less than or equal to X1, determining K1 as a first power expression coefficient.
If X1 is more than X and less than or equal to X2, determining K2 as a first power expression coefficient.
If X2 is less than or equal to X3, determining K3 as a first power expression coefficient.
…. It should be understood that the ellipses herein are omitted as being parts that are joined in top-bottom order.
If Xn-1 is less than x and less than or equal to Xn, determining Kn as a first power expression coefficient.
The method for determining the second power expression coefficient comprises the following steps:
in the first step, the corresponding set of pressure segments T0[ T1, T2, T3, …, tn ] is set, wherein T1 is a first preset pressure value, T2 is a second preset pressure value, T3 is a third preset pressure value, and Tn is an nth preset pressure value.
And secondly, setting a second power expression coefficient corresponding group K00[ K11, K22, K33, … and Knn ], wherein K11 is a first pressure preset expression coefficient, K22 is a second pressure preset expression coefficient, K33 is a third pressure preset expression coefficient, knn is an nth pressure preset expression coefficient, and K11 is more than K22, K33 is more than … and less than Knn.
And thirdly, judging a second power expression coefficient.
An average pressure value t is obtained.
If T is less than or equal to T1, determining K11 as a second power expression coefficient.
If T1 is more than T and less than or equal to T2, determining K22 as a second power expression coefficient.
If T2 is less than T and less than or equal to T3, determining K33 as a second power expression coefficient.
…. It should be understood that the ellipses herein are omitted as being parts that are joined in top-bottom order.
If Tn-1 is less than t and less than or equal to Tn, determining Knn as a second power expression coefficient.
The coil device of the superconducting magnet disclosed by the application has the following advantages compared with a conventional superconducting coil device:
the first shell is internally filled with refrigerant, the temperature is reduced by the refrigerant mechanism, the supporting element is arranged in the first shell, the coil is arranged on the supporting element and is further reduced in temperature by the refrigerant, so that the coil keeps superconducting property, the side part of the coil is provided with an elastic rod, the end head of the elastic rod penetrates out of the first shell, the elastic rod is influenced by the coil in the deformation or movement process of the coil, the end head moves, the relative displacement of the end head of the elastic rod is collected by the displacement sensor, the deformation or movement condition of the coil is judged, the power of the refrigerant mechanism is adjusted based on the phenomenon, the quench problem caused by the temperature rise of the coil is effectively prevented, and the excessive consumption of energy is reduced; under the working state of the coil, the coil can be influenced by the reaction force, and the coil can axially move or deform, and in the process, heat generated by friction is still possible, so that the supporting element is in butt joint with the pressure sensor, the degree of the axial movement or deformation of the coil is judged through data acquired by the pressure sensor, and the parameter of the power of the first-time adjustment refrigerating mechanism is corrected, so that the driving power of the refrigerating mechanism is determined more accurately.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (10)
1. A coil apparatus of a superconducting magnet, comprising:
the first shell is internally filled with refrigerant, an isolation cavity is further formed in the top of the first shell, and a pressure sensor is arranged in the isolation cavity;
the supporting element is arranged in the first shell, the top of the supporting element penetrates into the isolation cavity and is connected with the pressure sensor, and the side part of the supporting element is sleeved with a coil;
a pair of elastic rods arranged at the side parts of the coil and penetrating through the first shell upwards;
the displacement sensor is arranged outside the first shell and is connected with the end head of the elastic rod;
the refrigeration mechanism is arranged in the first shell and used for cooling the refrigerant.
2. The coil device of a superconducting magnet according to claim 1, wherein a limiting cavity is arranged at a position of the first housing corresponding to the isolating cavity, the elastic rod penetrates through the isolating cavity and extends out of the first housing, a limiting slider is arranged at a position of the side portion of the elastic rod corresponding to the limiting cavity, and the limiting slider is in limiting sliding in the limiting cavity.
3. The coil device of a superconducting magnet according to claim 1, further comprising a second housing, wherein the first housing is disposed inside the second housing, wherein the first housing and the second housing are connected by a heat insulating block, and wherein a vacuum chamber is formed between the first housing and the second housing.
4. A control method of a coil device of a superconducting magnet, characterized by being applied to the coil device of a superconducting magnet as claimed in any one of claims 1 to 3, comprising:
acquiring displacement information acquired by a displacement sensor;
establishing a displacement curve generation model, wherein the displacement curve generation model generates a displacement change curve according to the displacement information, and the abscissa of the displacement change curve is time and the ordinate is a real-time displacement value;
establishing a refrigeration power corresponding rule, carrying out scanning analysis on the displacement change curve to determine a first curve characteristic, and analyzing the first curve characteristic according to the refrigeration power corresponding rule to determine a first running power;
and driving the refrigeration mechanism according to the first operation power.
5. The method of controlling a coil apparatus of a superconducting magnet according to claim 4, wherein the method of determining the first operating power according to the cooling power correspondence rule comprises:
acquiring a first curve characteristic, wherein the first curve characteristic comprises a curve rising amplitude, a curve fluctuation state and a real-time displacement value, and if the curve rising amplitude and the curve fluctuation state of the displacement change curve reach preset standards, calculating an average value of a plurality of real-time displacement values to obtain an average displacement value;
a plurality of preset displacement sections are set, and a first power expression coefficient is determined and obtained according to the preset displacement sections to which the average displacement value belongs;
and determining the first running power according to the first power expression coefficient and the average displacement value.
6. The control method of a coil device of a superconducting magnet according to claim 5, wherein determining a first operating power expression of the first operating power comprises:
wherein ,
for the first operating power, +.>
For the ith first power expression coefficient, x is the average displacement value.
7. A control method of a coil device of a superconducting magnet according to claim 6, further comprising:
acquiring pressure information acquired by a pressure sensor;
establishing a pressure curve generation model, and generating a pressure change curve according to the pressure information, wherein the abscissa of the pressure change curve is time, and the ordinate is a real-time pressure value;
scanning and analyzing the pressure change curve to determine a second curve characteristic, analyzing the second curve characteristic according to the refrigerating power corresponding rule, correcting the first operating power according to an analysis result, and determining a second operating power;
and driving the refrigeration mechanism according to the second operation power.
8. A control method of a coil arrangement of a superconducting magnet according to claim 7, wherein the method of determining the second operating power according to the refrigeration power correspondence rule comprises:
acquiring a second curve characteristic, wherein the second curve characteristic comprises a curve rising amplitude, a curve fluctuation state and a real-time pressure value, and if the rising amplitude and the curve fluctuation state of the pressure change curve reach preset standards, calculating the real-time pressure value to obtain an average pressure value;
a plurality of preset pressure sections are set, and a second power expression coefficient is determined and obtained according to the preset pressure sections to which the average pressure value belongs;
and determining a second operation power according to the second power expression coefficient and the average pressure value.
9. The control method of a coil device of a superconducting magnet according to claim 8, wherein determining a second operating power expression of the second operating power includes:
wherein ,
for the second operating power, +.>
For the ith first power expression coefficient, t is the mean pressure value, +.>
Is the q second power expression coefficient.
10. A method of controlling a coil arrangement for a superconducting magnet according to claim 9, wherein the method of determining the first power expression coefficient comprises:
setting a corresponding group X0[ X1, X2, X3, …, xn ] of displacement sections, wherein X1 is a first preset displacement value, X2 is a second preset displacement value, X3 is a third preset displacement value, xn is an nth preset displacement value, and X1 is more than X2 and less than X3 and less than … and less than Xn;
setting a first power expression coefficient corresponding group K0[ K1, K2, K3, …, kn ], wherein K1 is a first displacement preset expression coefficient, K2 is a second displacement preset expression coefficient, K3 is a third displacement preset expression coefficient, and Kn is an nth displacement preset expression coefficient;
obtaining an average displacement value x;
if X is less than or equal to X1, determining K1 as a first power expression coefficient;
if X1 is more than or equal to X2, determining K2 as a first power expression coefficient;
if X2 is more than or equal to X3, determining K3 as a first power expression coefficient;
…；
if Xn-1 is more than x and less than or equal to Xn, determining Kn as a first power expression coefficient;
the method for determining the second power expression coefficient comprises the following steps:
setting a corresponding group T0[ T1, T2, T3, …, tn ] of pressure sections, wherein T1 is a first preset pressure value, T2 is a second preset pressure value, T3 is a third preset pressure value, and Tn is an nth preset pressure value;
setting a second power expression coefficient corresponding group K00[ K11, K22, K33, … and Knn ], wherein K11 is a first pressure preset expression coefficient, K22 is a second pressure preset expression coefficient, K33 is a third pressure preset expression coefficient, knn is an nth pressure preset expression coefficient, K11 is more than K22 and less than K33 is more than … and less than Knn;
obtaining an average pressure value t;
if T is less than or equal to T1, determining K11 as a second power expression coefficient;
if T1 is more than T and less than or equal to T2, determining K22 as a second power expression coefficient;
if T2 is more than or equal to T3, determining K33 as a second power expression coefficient;
…；
if Tn-1 is less than t and less than or equal to Tn, determining Knn as a second power expression coefficient.
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