CN213424753U - Superconducting magnet - Google Patents
Superconducting magnet Download PDFInfo
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- CN213424753U CN213424753U CN202023046118.8U CN202023046118U CN213424753U CN 213424753 U CN213424753 U CN 213424753U CN 202023046118 U CN202023046118 U CN 202023046118U CN 213424753 U CN213424753 U CN 213424753U
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- current lead
- hts current
- superconducting magnet
- container
- transmission cable
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Abstract
The utility model discloses a superconducting magnet, which comprises an HTS current lead, an outer vacuum container and a low-temperature container arranged at the inner side of the outer vacuum container; the outer end part of the HTS current lead wire is fixed on the outer vacuum container in an insulated way, extends out of the outer vacuum container and is connected with a power supply; the inner end part of the HTS current lead wire is electrically connected with the outer end part of the transmission cable, the inner end part of the transmission cable extends into the cryogenic container to electrically connect the superconducting switch in the cryogenic container, and the middle part of the transmission cable is fixed on the cryogenic container in an insulating mode. Based on the application of HTS current lead wire, can greatly reduce the heat load of superconducting magnet, during the excitation, the heat that HTS current lead wire introduced into the cryogenic container only has the milliwatt level, can take away this part of heat through cold head secondary mechanism in the refrigerator, does not have liquid helium evaporation discharge, can reduce the liquid helium that needs to store in the cryogenic container, practices thrift the cost, need not the plug, the operation of being convenient for, HTS current lead wire and transmission cable can be permanent fixed on superconducting magnet.
Description
Technical Field
The utility model relates to a superconducting magnet technical field, in particular to superconducting magnet.
Background
In the existing superconducting magnet, a detachable current lead is arranged on a service tower, and during excitation, the current lead can normally work only by evaporation cooling of liquid helium, and the liquid helium is consumed in the excitation process. In order to ensure the excitation safety, enough liquid helium needs to be stored in the 4K container.
Therefore, how to reduce the consumption of liquid helium and save cost is a technical problem that needs to be solved by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a superconducting magnet, which can reduce the consumption of liquid helium and save the cost.
In order to achieve the above object, the utility model provides a following technical scheme:
a superconducting magnet comprising an HTS current lead, an outer vacuum vessel and a cryogenic vessel disposed inside the outer vacuum vessel; the outer end part of the HTS current lead is fixed on the outer vacuum container in an insulated way, extends out of the outer vacuum container and is connected with a power supply; the inner end part of the HTS current lead wire is electrically connected with the outer end part of the transmission cable, the inner end part of the transmission cable extends into the cryogenic container to electrically connect the superconducting switch in the cryogenic container, and the middle part of the transmission cable is fixed on the cryogenic container in an insulating mode.
Preferably, the middle part of the transmission cable is inserted and fixed in an insulated inner electric connector, and the inner electric connector is fixedly connected with the low-temperature container.
Preferably, the transmission cable is soldered to the inner electrical connector, and/or the inner electrical connector is soldered to the cryogenic vessel.
Preferably, the middle part of the HTS current lead is inserted and fixed in an insulated outer electrical connector, and the outer electrical connector is fixedly connected with the outer vacuum container.
Preferably, the HTS current lead is welded to the outer electrical connector and/or the outer electrical connector is welded or screwed to the outer vacuum vessel.
Preferably, the HTS current lead is vertically disposed.
Preferably, the inner end of the HTS current lead is connected to the transmission cable by soldering.
Preferably, a cold shield is provided between the outer vacuum vessel and the cryogenic vessel, and the middle of the HTS current lead is connected to the cold shield by a first cold lead.
Preferably, the apparatus further comprises a refrigerator extending from the outer vacuum vessel into the cryogenic vessel, the HTS current lead being directly connected to the refrigerator by a second cold lead.
Preferably, a refrigerator extends from the outer vacuum container to the cryogenic container, a cold shield is arranged between the outer vacuum container and the cryogenic container, and the middle part of the HTS current lead is connected to the cold shield and the refrigerator through a cold guide respectively.
The utility model provides a superconducting magnet, which comprises an HTS current lead wire, an outer vacuum container and a low-temperature container arranged at the inner side of the outer vacuum container; the outer end part of the HTS current lead wire is fixed on the outer vacuum container in an insulated way, extends out of the outer vacuum container and is connected with a power supply; the inner end part of the HTS current lead wire is electrically connected with the outer end part of the transmission cable, the inner end part of the transmission cable extends into the cryogenic container to electrically connect the superconducting switch in the cryogenic container, and the middle part of the transmission cable is fixed on the cryogenic container in an insulating mode.
Based on the application of HTS current lead wire, can greatly reduce the heat load of superconducting magnet, during the excitation, the heat that HTS current lead wire introduced into the cryogenic container only has the milliwatt level, can take away this part of heat through cold head secondary mechanism in the refrigerator, does not have liquid helium evaporation discharge, can reduce the liquid helium that needs to store in the cryogenic container, practices thrift the cost, need not the plug, the operation of being convenient for, HTS current lead wire and transmission cable can be permanent fixed on superconducting magnet.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a superconducting magnet according to the present invention.
Reference numerals:
the low-temperature container 1, the cold screen 2, the outer vacuum container 3, the 4K condenser 4, the cold head secondary mechanism 5, the cold head primary mechanism 6, the cold head container 7, the service tower 8, the outer electric connector 9, the HTS current lead wire 10, the inner electric connector 11, the transmission cable 12, the superconducting connector 13, the superconducting switch 14, the superconducting coil 15, the heater 16 and the vacuum layer 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a superconducting magnet, can reduce the consumption of liquid helium, practice thrift the cost.
In an embodiment of the superconducting magnet provided in the present invention, please refer to fig. 1, which includes an HTS current lead 10, an outer vacuum container 3, and a low temperature container 1 disposed inside the outer vacuum container 3. Typically, the outer vacuum vessel 3 is a 300K vessel and the cryogenic vessel 1 is a 4K vessel. The HTS current lead 10, i.e., the high-temperature superconducting current lead assembly, is not limited in its material selection, structure, and specific design.
The HTS current lead 10 is disposed outside the service tower 8, specifically, the service tower 8 is disposed in an upper central position of the superconducting magnet, and the HTS current lead 10 is disposed at a side of the service tower 8. The outer ends of HTS current leads 10 are insulated and fixed to outer vacuum vessel 3 and extend out of outer vacuum vessel 3 for connection to a power supply. The inner end of the HTS current lead 10 is electrically connected to the outer end of the transmission cable 12, the inner end of the transmission cable 12 extends into the cryogenic container 1 to electrically connect the superconducting switch 14 in the cryogenic container 1, and the middle of the transmission cable 12 is fixed to the cryogenic container 1 in an insulated manner. Specifically, the inner end of the transmission cable 12 is connected to a superconducting switch 14 through a superconducting joint 13.
Based on the application of HTS current lead wire 10, the thermal load of the superconducting magnet can be greatly reduced, during excitation, the heat transferred into the cryogenic container 1 by the HTS current lead wire 10 is only in the milliwatt level, the partial heat can be taken away through the cold head secondary mechanism 5 in the refrigerator, no liquid helium is evaporated and discharged, the liquid helium which needs to be stored in the cryogenic container 1 can be reduced, the cost is saved, plugging and unplugging are not needed, the operation is convenient, and the HTS current lead wire 10 and the transmission cable 12 can be permanently fixed on the superconducting magnet.
In addition, the components such as the superconducting coil 15 and the like in the low-temperature container 1 do not need to be soaked in liquid helium, and only a small amount of liquid helium or a small amount of helium needs to be stored in the low-temperature container 1, so that the superconducting coil 15, the superconducting joint 13 and the superconducting switch 14 can work in a 4K temperature range, and the superconductivity is realized.
In addition, helium gas in cryogen vessel 1 can act as a cryogen for the refrigerator and superconducting coils 15 during the refrigerator shutdown state, and the magnets can be excited and demagnetized normally, i.e., current is loaded or unloaded through HTS current lead 10. Meanwhile, when the magnet is excited or demagnetized, the heater 16 is not required to heat.
Furthermore, the middle of the transmission cable 12 is inserted into an insulated inner electrical connector 11, and the inner electrical connector 11 is fixedly connected to the cryogenic container 1. The transmission cable 12 is soldered to the inner electrical connector 11, and the inner electrical connector 11 is also soldered to the cryogenic vessel 1, so as to achieve a permanent fixation between the cryogenic vessel 1 and the transmission cable.
Meanwhile, the middle part of the HTS current lead wire 10 is inserted and fixed in the insulated outer electric connector 9, and the outer electric connector 9 is fixedly connected with the outer vacuum container 3. In particular, HTS current lead wire 10 is soldered to outer electrical connector 9, and outer electrical connector 9 is soldered or screwed to outer vacuum vessel 3 to achieve a permanent fixation of HTS current lead wire 10 to the outer vacuum vessel 3 piece. Alternatively, the external electric connector 9 is screwed to the outer vacuum vessel 3.
In this embodiment, the insulation between the HTS current lead 10 and the outer vacuum vessel 3 and between the transmission cable 12 and the cryogenic vessel 1 is conveniently achieved by the arrangement of the inner electrical connector 11 and the outer electrical connector 9, and at the same time, the electrical conduction between the HTS current lead 10 and the transmission cable 12 is not affected.
Further, HTS current lead 10 is vertically disposed for ease of assembly, specifically, with the inner end of HTS current lead 10 down and the outer end up. Of course, in other embodiments, HTS current lead 10 may be mounted at any position and angle on outer vacuum vessel 3, as desired.
Further, the inner end of HTS current lead wire 10 is connected to transmission cable 12 by soldering.
Further, a cold shield 2, typically a 50K cold shield, is arranged between the outer vacuum vessel 3 and the cryogenic vessel 1. The middle of the HTS current lead 10 is connected to the cold shield 2 via a first cold conducting member, which is specifically a metal member or other material member with a high thermal conductivity to ensure cold conducting capability. That is, HTS current lead 10 can be cooled directly by a 50K cold shield, which can improve the cooling effect on HTS current lead 10.
Further, the superconducting magnet further comprises a refrigerator extending from the outer vacuum vessel 3 into the cryogenic vessel 1, and the HTS current lead 10 is directly connected to the refrigerator through a second cold lead to improve the cooling effect on the HTS current lead 10. The second cold-conducting part is a metal part or other material part with high heat conductivity coefficient, so that the cold-conducting capacity is ensured. More specifically, HTS current lead 10 is connected to the cold-head primary mechanism 6 of the refrigerator.
Of course, in other embodiments, HTS current lead 10 may be directly connected to the refrigerator through a cold conductor, but not directly disposed between the cold shield 2 and the cold conductor. Alternatively still, the HTS current lead 10 may be connected directly to the cold shield 2 by a cold conductor, but not directly to the refrigerator.
In the superconducting magnet in the embodiment, the high-temperature superconducting current lead technology is combined with the low-temperature system of the zero-volatilization superconducting magnet, zero consumption of liquid helium or helium gas can be realized when the liquid helium or helium gas is soaked in the magnet for excitation, the excitation operation is simpler, as the superconducting coil 15, the superconducting joint 13 and the superconducting switch 14 do not need to be soaked in the liquid helium, a 4K container can store less liquid helium, or only a small amount of liquid helium or only a certain amount of helium gas can be stored according to other requirements, meanwhile, filling of the liquid helium can be reduced, consumption of the liquid helium when loss is over time can be reduced, and the problems of consumption of the liquid helium in the conventional current lead excitation and the problem that the current. And when the system operates in a steady state, the system can realize zero volatilization. When needed, the 4K container can be filled with liquid helium through the service tower 8, and when the liquid helium is in short supply, the liquid helium can be not infused, and a small amount of helium gas can be supplemented.
It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The superconducting magnet provided by the present invention has been described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A superconducting magnet comprising an HTS current lead (10), an outer vacuum vessel (3) and a cryogenic vessel (1) disposed inside the outer vacuum vessel (3); the outer end part of the HTS current lead (10) is fixed on the outer vacuum container (3) in an insulated way, extends out of the outer vacuum container (3) and is connected with a power supply; the inner end part of the HTS current lead wire (10) is electrically connected to the outer end part of a transmission cable (12), the inner end part of the transmission cable (12) extends into the low-temperature container (1) to electrically connect a superconducting switch (14) in the low-temperature container (1), and the middle part of the transmission cable (12) is fixed to the low-temperature container (1) in an insulating mode.
2. Superconducting magnet according to claim 1, characterized in that the middle of the transmission cable (12) is plugged into an insulated inner electrical connector (11), the inner electrical connector (11) being fixedly connected to the cryogenic vessel (1).
3. A superconducting magnet according to claim 2, wherein the transmission cable (12) is soldered to the inner electrical connector (11) and/or the inner electrical connector (11) is soldered to the cryogenic vessel (1).
4. A superconducting magnet according to claim 1, wherein the middle of the HTS current lead (10) is plug-fixed in an insulated outer electrical connector (9), the outer electrical connector (9) being fixedly connected to the outer vacuum vessel (3).
5. A superconducting magnet according to claim 4, wherein the HTS current leads (10) are welded to the outer electrical connector (9) and/or the outer electrical connector (9) is welded or screwed to the outer vacuum vessel (3).
6. A superconducting magnet according to claim 1, wherein the HTS current lead (10) is vertically arranged.
7. A superconducting magnet according to claim 1, wherein the inner end of the HTS current lead (10) is connected to the transmission cable (12) by soldering.
8. A superconducting magnet according to any of claims 1 to 7, wherein a cold shield (2) is provided between the outer vacuum vessel (3) and the cryogenic vessel (1), and the middle of the HTS current lead (10) is connected to the cold shield (2) by a first cold lead.
9. A superconducting magnet according to any of claims 1 to 7, further comprising a refrigerator extending from the outer vacuum vessel (3) into the cryogen vessel (1), the HTS current lead (10) being connected directly to the refrigerator by a second cold lead.
10. A superconducting magnet according to any of claims 1 to 7 wherein a refrigerator extends from the outer vacuum vessel (3) into the cryogen vessel (1), and a cold shield (2) is provided between the outer vacuum vessel (3) and the cryogen vessel (1), the middle of the HTS current lead (10) being connected to the cold shield (2) and the refrigerator respectively by a cold conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023046118.8U CN213424753U (en) | 2020-12-16 | 2020-12-16 | Superconducting magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023046118.8U CN213424753U (en) | 2020-12-16 | 2020-12-16 | Superconducting magnet |
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| CN213424753U true CN213424753U (en) | 2021-06-11 |
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| CN202023046118.8U Active CN213424753U (en) | 2020-12-16 | 2020-12-16 | Superconducting magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116313372A (en) * | 2023-05-23 | 2023-06-23 | 宁波健信超导科技股份有限公司 | Superconducting magnet and cooling system and method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116313372A (en) * | 2023-05-23 | 2023-06-23 | 宁波健信超导科技股份有限公司 | Superconducting magnet and cooling system and method thereof |
| CN116313372B (en) * | 2023-05-23 | 2023-08-11 | 宁波健信超导科技股份有限公司 | Superconducting magnet and cooling system and method thereof |
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Address after: 315300 No. 427, Gaoke Avenue, Cixi High-tech Industrial Development Zone, Ningbo City, Zhejiang Province Patentee after: Ningbo Jianxin Superconducting Technology Co.,Ltd. Address before: 315301 No.427, Gaoke Avenue, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province Patentee before: NINGBO JANSEN NMR TECHNOLOGY Co.,Ltd. |