CN211346004U

CN211346004U - Superconducting magnetic suspension thermostat

Info

Publication number: CN211346004U
Application number: CN201921895829.7U
Authority: CN
Inventors: 张峰; 余存永; 席乐甜; 王亮
Original assignee: Shenzhen Kaiwanwen Technology Co ltd
Current assignee: Shenzhen Kaiwanwen Technology Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-08-25
Anticipated expiration: 2029-11-05

Abstract

The application provides a superconductive magnetism suspension thermostat, including box, box body and refrigerator, the box has and is used for placing the cavity of box body, be used for the installation the installing port of the cold head of refrigerator, be used for to the liquid nitrogen entry of liquid nitrogen is injected into to the cavity of box body and is used for discharging the nitrogen gas export of nitrogen gas in the cavity of box body, the box body has the inner chamber that is used for placing superconducting material, the surface of box body with be connected with adiabatic support piece between the internal surface of box, the cold head of refrigerator passes through the installing port of box stretches into the cavity of box body, the cold head of refrigerator with be connected with cold volume conduction piece between the surface of box body. This application adopts the refrigerator as the cold source through the mode that the liquid nitrogen soaks, can obtain lower cooling temperature at superconducting material in, can also shorten superconducting material's cool time by a wide margin, and it is more convenient to use.

Description

Superconducting magnetic suspension thermostat

Technical Field

The application belongs to the field of superconducting magnetic suspension, and particularly relates to a superconducting magnetic suspension thermostat.

Background

The high-temperature superconducting maglev train is a new way for future traffic trip, and the high-temperature superconducting is known as one of the most great inventions in the 20 th century, and is also a popular field researched by various researchers in recent years. The high-temperature superconductivity is a phenomenon that a superconducting material such as Yttrium Barium Copper Oxide (YBCO) generates superconducting transformation at 92K, and is greatly different from the common superconductivity in that the temperature of the superconducting transformation of the material is increased, so that the superconducting phenomenon is realized more easily. The realization of high-temperature superconduction cannot be separated from a low-temperature environment, and the thermostat has the function of providing a lasting and stable temperature environment for the superconducting material. At present, the main method for realizing the low-temperature environment required by superconduction in China is liquid nitrogen soaking, and the thermostat manufactured by the method can only reach 77K and can reach about 63K at the lowest. The suspension force generated after the superconducting transformation of the high-temperature superconducting material is related to the temperature, and the suspension force is larger when the temperature is lower. In order to achieve lower temperature, some high-temperature superconducting thermostats use a refrigerator as a cold source, and can obtain a low-temperature environment of 50K. However, if a refrigerator is used as a cooling source, the cooling time of the superconducting material will become very long, and it usually takes 36 hours or more to cool the superconducting material from room temperature to 50K.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a superconductive magnetic suspension thermostat to solve the longer technical problem of cooling time that superconductive thermostat adopts the refrigerator as the cold source alone among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides a superconductive magnetism suspension thermostat, includes box, box and refrigerator, the box has and is used for placing the cavity of box, be used for the installation the installing port of the cold head of refrigerator, be used for to the liquid nitrogen entry of liquid nitrogen is injected into to the cavity of box and is used for discharging the nitrogen gas export of the nitrogen gas in the cavity of box, the box has the inner chamber that is used for placing superconducting material, the surface of box with be connected with adiabatic support piece between the internal surface of box, the cold head of refrigerator passes through the installing port of box stretches into the cavity of box, the cold head of refrigerator with be connected with cold volume conduction piece between the surface of box.

Further, the box body includes a box body having an opening and a box cover detachably mounted on the opening of the box body, and the heat insulating support is coupled to an inner surface of the box cover.

Further, the case body comprises a first outer layer and a first inner layer, the case cover comprises a second outer layer and a second inner layer, the first inner layer and the second inner layer enclose to form a cavity of the case body, the first inner layer and the first outer layer enclose to form a first vacuum chamber, and the second inner layer and the second outer layer enclose to form a second vacuum chamber.

Furthermore, the outer surface of the box cover is provided with a flange plate for connecting the test bed.

Further, the surface of case body is provided with annular flange, annular flange distributes along the open-ended circumference of case body, annular flange with be provided with multiunit threaded connection subassembly between the case lid.

Further, the box body comprises a box body with an opening and a box cover detachably mounted on the opening of the box body, and the heat insulation support is connected with the outer surface of the box body.

Further, a temperature sensor is mounted on the cartridge body and/or the cartridge cover.

Further, the cold energy conduction piece is a copper braided belt or a copper stranded wire.

Further, the insulating support is a fiberglass rod.

Furthermore, one end of the glass fiber rod is provided with an external thread, the other end of the glass fiber rod is provided with an internal thread, the inner surface of the box body is provided with a connecting block, and the connecting block is provided with an internal thread in threaded fit with the external thread of the glass fiber rod; the box body is provided with a through hole for the threaded connecting piece to pass through, and the threaded connecting piece is provided with an external thread matched with the internal thread of the glass fiber rod.

The cooling device has the advantages that the box body and the superconducting material in the box body can be rapidly cooled to 77K through a liquid nitrogen soaking mode, the refrigerating machine is used as a cold source, and the temperature of the superconducting material is further reduced to 50K through the cold energy conduction piece; compared with the method that the superconducting material is cooled by soaking in liquid nitrogen alone and the superconducting material is cooled by adopting a refrigerator alone, the method and the device can greatly shorten the cooling time of the superconducting material while the superconducting material obtains lower cooling temperature, and are more convenient to use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

fig. 2 is a schematic connection diagram of an insulating support member according to an embodiment of the present application.

Wherein, each mark in the figure is:

1. a box body; 11. a cavity; 12. an installation port; 13. a liquid nitrogen inlet; 14. a nitrogen outlet; 15. a tank body; 151. a first outer layer; 152. a first inner layer; 153. a first vacuum chamber; 16. a box cover; 161. a second outer layer; 162. a second inner layer; 163. a second vacuum chamber; 17. an annular flange; 18. connecting blocks; 2. a box body; 21. an inner cavity; 22. a cartridge body; 23. a box cover; 3. a refrigerator; 31. cooling the head; 4. an insulating support; 5. a cold energy conduction member; 6. a flange plate; 7. a threaded connection assembly; 8. an elastic sealing ring; 9. a threaded connection.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the patent, and the specific meanings of the above terms will be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

As shown in fig. 1 and 2, a superconducting magnetic levitation thermostat includes a case 1, a case 2, and a refrigerator 3, the case 1 having a cavity 11 for placing the case 2, a mounting port 12 for mounting a cold head 31 of the refrigerator 3, a liquid nitrogen inlet 13 for injecting liquid nitrogen into the cavity 11 of the case 2, and a nitrogen gas outlet 14 for discharging nitrogen gas in the cavity 11 of the case 1, the case 2 having an inner cavity 21 for placing a superconducting material. A heat insulation supporting piece 4 is connected between the outer surface of the box body 2 and the inner surface of the box body 1, a cold head 31 of the refrigerator 3 extends into the cavity 11 of the box body 1 through a mounting opening 12 of the box body 1, and a cold quantity conduction piece 5 is connected between the cold head 31 of the refrigerator 3 and the outer surface of the box body 2.

During operation, box body 2 containing superconducting material is suspended in cavity 11 of box body 1 through adiabatic support 4, liquid nitrogen inlet 13 is connected with a liquid nitrogen storage tank, nitrogen outlet 14 can be connected with a nitrogen gas collection device, liquid nitrogen is injected into cavity 11 of box body 1 through liquid nitrogen inlet 13, liquid nitrogen inlet 13 is located below nitrogen outlet 14, box body 2 in cavity 11 of box body 1 and the superconducting material inside can be soaked in the liquid nitrogen, and the room temperature is rapidly cooled to 77K, and simultaneously the liquid nitrogen is gasified into nitrogen and is discharged through nitrogen outlet 14. The cold quantity of the cold head 31 of the refrigerator 3 is transmitted to the box body 2 through the cold quantity conduction piece 5 and then transmitted to the superconducting material in the inner cavity 21 through the box body 2, so that the superconducting material is further cooled, and under the condition that the Stirling refrigerator is adopted, the temperature of the box body 2 and the superconducting material in the box body can be stably controlled at any temperature point from 50K to room temperature.

According to the method, the box body 2 and the superconducting material in the box body can be rapidly cooled to 77K by a liquid nitrogen soaking mode, the refrigerator 3 is used as a cold source, and the temperature of the superconducting material is further reduced to 50K by the cold energy conducting piece 5; compared with the method that the superconducting material is cooled by soaking in liquid nitrogen alone and the superconducting material is cooled by adopting the refrigerator 3 alone, the method and the device can greatly shorten the cooling time of the superconducting material while the superconducting material obtains lower cooling temperature, and are more convenient to use.

Further, the cabinet 1 includes a cabinet body 15 having an opening and a cabinet cover 16 detachably mounted on the opening of the cabinet body 15, and the heat insulating support 4 is coupled to an inner surface of the cabinet cover 16. The case body 2 is coupled to the inner surface of the case cover 16 by the heat insulating support 4, and the case body 2 can be taken out of the cavity 11 of the case body 1 by opening the case cover 16.

Further, the box body 15 includes a first outer layer 151 and a first inner layer 152, the box cover 16 includes a second outer layer 161 and a second inner layer 162, the first inner layer 152 and the second inner layer 162 enclose the cavity 11 of the box body 1, the first inner layer 152 and the first outer layer 151 enclose a first vacuum cavity 15311, and the second inner layer 162 and the second outer layer 161 enclose a second vacuum cavity 16311. The box body 15 and the box cover 16 both adopt a double-layer vacuum structure, vacuum is formed between the inner layer and the outer layer, a better heat preservation effect is achieved, and the cold quantity in the cavity 11 of the box body 1 can be effectively reduced and is transferred out of the box body 1.

Further, the outer surface of the case cover 16 is provided with a flange 6 for connecting the test stand. When the device works, the flange 6 can be contacted with a table top and fixed by bolts, so that the scene of the superconducting material on a magnetic suspension track is simulated; the flange plate 6 can also be connected with a test bed, and the box body 1 is driven to move by the up-and-down movement of the test bed, so that the use scene of the superconducting magnet material on the magnetic suspension train can be simulated. Through set up ring flange 6 on case lid 16, box 1 can positive and negative be placed, can simulate two kinds of scenes of superconducting material on the train and on the track simultaneously, and good adiabatic performance can both be guaranteed to two kinds of circumstances.

Further, the outer surface of the box body 15 is provided with an annular flange 17, the annular flange 17 is distributed along the circumferential direction of the opening of the box body 15, and a plurality of sets of the screw connection assemblies 7 are arranged between the annular flange 17 and the box cover 16. The threaded connection assembly 7 can be a bolt and a nut, the bolt sequentially penetrates through a hole of the box cover 16 and a hole of the annular flange 17, and the nut is screwed to fix the box cover 16 on the annular flange 17 of the box body 15, so that the assembly and disassembly are more convenient.

Furthermore, an elastic sealing ring 8 is arranged between the annular flange 17 and the box cover 16, and when the box cover 16 is fixed on the annular flange 17, the elastic sealing ring 8 is pressed, so that the sealing effect of the cavity 11 of the box body 1 can be improved, and the heat insulation performance of the box body 1 can be further ensured.

Further, the box body 2 includes a box body 22 having an opening and a box cover 23 detachably mounted on the opening of the box body 22, and the heat insulating support 4 is connected to an outer surface of the box body 22. After the cover 16 is opened, the box body 2 is taken out from the cavity 11 of the box body 1, and then the cover 23 is taken out from the box body 22, so that the superconducting material can be taken out or put in. In this application, two relative medial surfaces of box body 22 are provided with the spout respectively, and the one end opening of spout, the other end are sealed, and through the opening slip insert lid 23 to the spout, can close lid 23 lid on the opening of box body 22.

Further, a temperature sensor is mounted on the box body 22 and/or the box cover 23. The real-time temperature of the box body 22 and/or the box cover 23 is fed back to the refrigerator 3 through the temperature sensor, so that the working state of the refrigerator 3 can be accurately controlled, the temperature precision can reach 0.1K, and the temperature state of the superconducting material can be conveniently controlled.

Further, the cold energy conductor 5 can be a copper braid or a copper strand. Copper braid over braid or copper strands are flexible connection between refrigerator 3's cold head 31 and box body 2, can not influence box body 2 and take out from the cavity 11 of box 1, can also improve cold volume conduction efficiency, and this flexible connection can also reduce refrigerator 3 during operation cold head 31's vibrations and produce the influence to the superconducting material in the box body 2.

Further, the insulating support 4 is a glass fiber rod. The glass fiber rod has good heat insulation performance and structural strength, the excellent heat insulation performance of the glass fiber rod can ensure that the box body 22 at one end is in a 50K state, the box cover 16 at the other end is in a room temperature state, and meanwhile, the glass fiber rod can bear repulsive force generated after superconducting magnetic conductivity is generated by superconducting materials, so that the superconducting materials are always in a horizontally placed state. The glass fiber rod may be a G10 rod, i.e. the content of glass fibers is 10%.

Furthermore, one end of the glass fiber rod is provided with an external thread, the inner surface of the box body 1 is provided with a connecting block 18, and the connecting block 18 is provided with an internal thread which is in threaded fit with the external thread of the glass fiber rod; the other end of the glass fiber rod is provided with an internal thread, and the box body 2 is provided with a through hole for the threaded connecting piece 9 to pass through. The two ends of the glass fiber rod are respectively connected with the box body 1 and the box body 2 through thread structures, particularly connected with the box cover 16 and the box body 22, and the assembly and disassembly are more convenient.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a superconductive magnetic suspension thermostat, its characterized in that, includes box, box body and refrigerator, the box has and is used for placing the cavity of box body, be used for the installation the installing port of the cold head of refrigerator, be used for to the liquid nitrogen entry of the cavity injection liquid nitrogen of box body and be used for discharging the nitrogen gas export of the nitrogen gas in the cavity of box body, the box body has the inner chamber that is used for placing superconducting material, the surface of box body with be connected with adiabatic support piece between the internal surface of box body, the cold head of refrigerator passes through the installing port of box body stretches into the cavity of box body, the cold head of refrigerator with be connected with cold volume conduction piece between the surface of box body.

2. The superconducting magnetic levitation thermostat of claim 1, wherein the box body includes a box body having an opening and a box cover removably mounted over the opening of the box body, the thermally insulating support being coupled to an inner surface of the box cover.

3. The superconducting magnetic levitation thermostat of claim 2, wherein the box body comprises a first outer layer and a first inner layer, and the box cover comprises a second outer layer and a second inner layer, the first inner layer and the second inner layer enclosing a cavity forming the box body, the first inner layer and the first outer layer enclosing a first vacuum chamber, and the second inner layer and the second outer layer enclosing a second vacuum chamber.

4. The superconducting magnetic levitation thermostat of claim 2, wherein an outer surface of the cover is provided with a flange for attachment to a test stand.

5. The superconducting magnetic levitation thermostat of claim 2, wherein the outer surface of the box body is provided with annular flanges distributed circumferentially around the opening of the box body, and wherein a plurality of sets of threaded connection assemblies are provided between the annular flanges and the box cover.

6. The superconducting magnetic levitation thermostat of claim 1, wherein the cartridge body includes a cartridge body having an opening and a cartridge cover detachably mounted on the opening of the cartridge body, the insulating support being attached to an outer surface of the cartridge body.

7. The superconducting magnetic levitation thermostat of claim 6, wherein a temperature sensor is mounted on the cassette body and/or the cassette cover.

8. The superconducting magnetic levitation thermostat of claim 1, wherein the cold conductor is a copper braid or a copper strand.

9. The superconducting magnetic levitation thermostat of claim 1, wherein the thermally insulating support is a fiberglass rod.

10. The superconducting magnetic levitation thermostat of claim 9, wherein one end of the glass fiber rod is provided with an external thread and the other end is provided with an internal thread, and the inner surface of the box body is provided with a connecting block provided with an internal thread which is in threaded engagement with the external thread of the glass fiber rod; the box body is provided with a through hole for the threaded connecting piece to pass through, and the threaded connecting piece is provided with an external thread matched with the internal thread of the glass fiber rod.