Structural support for conduction-cooled superconducting magnets
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F17C-003/00
F17C-003/08
H01F-006/04
H01F-027/10
출원번호
US-0164066
(2014-01-24)
등록번호
US-10109407
(2018-10-23)
발명자
/ 주소
Pourrahimi, Nadder
출원인 / 주소
Pourrahimi, Nadder
대리인 / 주소
Arjomand Law Group, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A method, a system, and an article of manufacture are disclosed for a structure to support and thermally insulate superconducting magnets, which need to be cooled and kept cool at very low temperatures while also allowing rotational and translational movement of the magnet and/or magnet system witho
A method, a system, and an article of manufacture are disclosed for a structure to support and thermally insulate superconducting magnets, which need to be cooled and kept cool at very low temperatures while also allowing rotational and translational movement of the magnet and/or magnet system without bending or otherwise deforming the support structure. In various embodiments, the support structure is placed within a vacuum vessel to substantially reduce or eliminate convection heat transfer. The support structure is further coupled with the superconducting magnet via enclosing structural components having sufficient second moment of inertia to resist bending forces, at least some of the enclosing structural components being made of low-heat conducting material, while at least some of the other enclosing structural components having reflective surfaces to reduce or eliminate radiation heat loss.
대표청구항▼
1. A structural support system for supporting a cold mass, the structural support system comprising: a vacuum vessel configured to be evacuated from heat conducting fluids to eliminate convection heat transfer to the cold mass;a cold mass physically attached to and supported by a base of a first con
1. A structural support system for supporting a cold mass, the structural support system comprising: a vacuum vessel configured to be evacuated from heat conducting fluids to eliminate convection heat transfer to the cold mass;a cold mass physically attached to and supported by a base of a first conduction insulation structural component, wherein the first conduction insulation structural component is a first container enclosed within the vacuum vessel and having the base, a sidewall enclosing an internal space of the first container and physically attached to the base; anda second conduction insulation structural component, being a second container enclosed within the vacuum vessel, enclosing the first container, and having a base, a sidewall enclosing an internal space of the second container and physically attached to the base of the second container, the sidewall of the second container also enclosing the sidewall of the first container, wherein both the sidewall of the first container and the sidewall of the second container are physically attached to a coupling plate, distinct from a top plate of the vacuum vessel, the top plate being physically attached to a sidewall of the vacuum vessel, and wherein an end-to-end linear path for conductive heat transfer having one end at the cold mass and another end at an environment surrounding the vacuum vessel, is formed from the cold mass through the base of the first container, the sidewall of the first container, the coupling plate, the sidewall of the second container, and the base of the second container, and wherein no other thermal conduction path exists between the cold mass and the environment surrounding the vacuum vessel. 2. The structural support system of claim 1, further comprising a radiation shield axially enclosed between the coupling plate and a bottom plate of the vacuum vessel. 3. The structural support system of claim 2, wherein the radiation shield is made of aluminum, copper, or stainless steel and is enclosed within the second conduction insulation structural component. 4. The structural support system of claim 2, wherein the coupling plate and the bottom plate are maintained at a same temperature to reduce thermal conduction through the radiation shield. 5. The structural support system of claim 2, wherein the first and the second conduction insulation structural components and the radiation shield are nested cylinders, with the first conduction insulation structural component being enclosed by the radiation shield, and the radiation shield being enclosed by the second conduction insulation structural component. 6. The structural support system of claim 5, wherein the first and the second conduction insulation structural components have a second moment of inertia to prevent deforming the structural support system due at least to the weight of support structure and cold mass during rotational and translational motion. 7. The structural support system of claim 1, wherein the second and the first conduction insulation structural components are made of low-heat conductivity materials including one of a polymer and a fiber reinforced polymer. 8. The structural support system of claim 1, further comprising a two-stage cryocooler and wherein the cold mass is a superconducting magnet. 9. A structural support system for supporting a cold mass, the structural support system comprising: a vacuum vessel configured to be evacuated from heat conducting fluids to eliminate convection heat transfer to the cold mass;a cold-mass physically attached to and supported by a first conduction insulation structural component, wherein the first conduction insulation structural component is a first container enclosed within the vacuum vessel and having the base, a sidewall enclosing an internal space of the first container and physically attached to the base;a radiation shield component physically coupled with the first conduction insulation structural component, and anchored to and within the vacuum vessel, wherein the first conduction insulation structural component is enclosed within the radiation shield component, and wherein the radiation shield component has a base, a sidewall enclosing an internal space of the radiation shield component and physically attached to the base of the radiation shield component, the sidewall of the radiation shield component also enclosing the sidewall of the first container, wherein both the sidewall of the first container and the sidewall of the radiation shield component are physically attached to a coupling plate, distinct from a top plate of the vacuum vessel, the top plate being physically attached to a sidewall of the vacuum vessel; anda second container enclosed within the vacuum vessel, enclosing the first container and the radiation shield component, and having a base and a sidewall physically attached to the coupling plate and enclosing an internal space of the second container and physically attached to the base of the second container, the sidewall of the second container also enclosing the sidewall of the first container and the sidewall of the radiation shield component, wherein an end-to-end linear path for conductive heat transfer having one end at the cold mass and another end at an environment surrounding the vacuum vessel, is formed by conduction from the cold mass through the base of the first container, the sidewall of the first container, the coupling plate, the sidewall of the second container, and the base of the second container, and wherein thermal radiation between the cold mass and the environment surrounding the vacuum vessel is reduced by the radiation shield component to minimal amounts. 10. The structural support system of claim 9, further comprising a second conduction insulation structural component coupled with the radiation shield component. 11. The structural support system of claim 9, further comprising a two-stage cryocooler, wherein a first cooling stage of the two-stage cryocooler is configured to cool down the radiation shield component to a desired low temperature. 12. The structural support system of claim 9, wherein the radiation shield component and the first conduction insulation structural component are configured as nested cylinders having a second moment of inertia to prevent deformation of the structural support system due at least to the weight of support structure and cold mass during movement. 13. The structural support system of claim 9, wherein the radiation shield component is axially enclosed between a coupling plate and a bottom plate maintained at a same temperature to reduce conduction of heat to the cold-mass through the radiation shield component. 14. The structural support system of claim 9, wherein the radiation shield component is made of aluminum, copper, or stainless steel. 15. A method of structurally supporting a cold mass, the method comprising: evacuating heat conducting fluids from a vacuum vessel to eliminate convection heat transfer to the cold mass;insulating a cold-mass from conductive heat transfer using a first conduction insulation structural component, wherein the first conduction insulation structural component is a first container enclosed within the vacuum vessel and having a base, a sidewall enclosing an internal space of the first container and physically attached to the base; andfurther insulating the cold mass from conductive heat transfer using a second conduction insulation structural component, being a second container enclosed within the vacuum vessel, enclosing the first container, and having a base, a sidewall enclosing an internal space of the second container and physically attached to the base of the second container, the sidewall of the second container also enclosing the sidewall of the first container, the second conduction insulation structural component coupled thermally in series with the first conduction insulation structural component, wherein both the sidewall of the first container and the sidewall of the second container are physically attached to a coupling plate, distinct from and not touching a top plate of the vacuum vessel, the top plate being physically attached to a sidewall of the vacuum vessel, and wherein an end to end linear path for heat transfer having one end at the cold mass and another end at an environment surrounding the vacuum vessel, is formed from the cold mass through the base of the first container, the sidewall of the first container, the top plate, the sidewall of the second container, and the base of the second container, and wherein no other thermal conduction path exists between the cold mass and the environment surrounding the vacuum vessel. 16. The method of claim 15, further comprising insulating the cold mass from radiation heat transfer using a radiation shield. 17. The method of claim 16, wherein the radiation shield is axially enclosed between the coupling plate and a bottom plate maintained at a same temperature to reduce conduction of heat to the cold-mass through the radiation shield. 18. The method of claim 15, wherein the conduction insulation structural components are configured to have a second moment of inertia to prevent deformation of a structural support due at least to the weight of support structure and cold mass during rotational and translational motion. 19. The structural support system of claim 1, where in the coupling plate is an annulus.
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