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NMR apparatus comprising a superconducting magnet assembly and cooled probe components

A technology of superconducting magnets and sampling heads, which is applied in the direction of superconducting magnets/coils, magnetic objects, electrical components, etc., and can solve the problem of low-temperature coolers reducing the evaporation rate of low-boiling point cryogenic liquids, etc.

Active Publication Date: 2018-02-16
BRUKER SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this assembly is that the cooling capacity of the cryocooler cannot be used to reduce the evaporation rate of low boiling cryogenic liquids such as liquid helium since the temperature of the first cooling stage of the cryocooler is too high (about 35K)

Method used

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  • NMR apparatus comprising a superconducting magnet assembly and cooled probe components
  • NMR apparatus comprising a superconducting magnet assembly and cooled probe components
  • NMR apparatus comprising a superconducting magnet assembly and cooled probe components

Examples

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Embodiment Construction

[0056] The present invention will be described in more detail below with reference to examples.

[0057] figure 2 The topology of the coolant flow in the embodiment given by way of example is schematically shown. under the Figure 3 to Figure 8 In , the basic design was changed for other purposes.

[0058] The structure comprises four functional units, in particular the cryocooler 2, the components to be cooled, the compressor and the fluid lines including the heat exchanger. The cryocooler 2 together with its first and second cooling stages 3, 4 can be seen on the left side of the figure. Four components 110 , 9 , 10 and 204 to be cooled are shown on the right by way of example, two components being in each case approximately at the temperature of the first and second cooling stations 3 , 4 . Cooling is provided by a circulating coolant which thermally couples the respective cooling table 3, 4 with the spatially separated components 110, 9, 10, 204 to be cooled, this cou...

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Abstract

The invention provides an NMR apparatus comprising a superconducting magnet assembly and cooled probe components. A superconducting magnet assembly includes a cryostat, a vacuum vessel and a refrigeration stage. An NMR probe using the assembly includes comprises cooled probe components, a cryocooler with a second and a first cooling stand, and a counter flow heat exchanger. A coolant is guided from a heat exchanger on the first cooling stand to a first inlet of the counter flow heat exchanger, from a second outlet to a heat exchanger on the second cooling stand, and then to the cooled probe component, and a heat exchanger in the vacuum of the cryostat. The coolant is guided from the second outlet to the heat exchanger in the vacuum of the vacuum of the cryostat or a heat exchanger and a second inlet of a suspension tube of a helium tank, so that both the intake temperature and the return flow temperature of the coolant are at least 5 K less than the operation temperature of the first cooling stand. The evaporation rate of liquid helium can be reduced or a superconducting magnet can be cooled in a coolant-free cryostat.

Description

technical field [0001] The present invention relates to an NMR apparatus comprising a superconducting magnet assembly comprising a cryostat having a vacuum chamber and a refrigeration stage operable at operating temperatures <100K and comprising A superconducting magnet coil system comprising: a cold bore in which a room temperature passageway of a cryostat is engaged; an NMR sampling head including a sampling head cooled to an operating temperature of <100K provided during operation A cryocooler of at least two stages having a second cooling stage arranged in an insulated housing at an operating temperature of <35.4K and a first cooling stage having an operating temperature greater than that of the second cooling stage stage; a counter-flow heat exchanger comprising two inlets and two outlets for two opposing flows of coolant provided in an insulated housing; The heat exchanger leads directly or indirectly to the cooling line in the first inlet of the counter-flow h...

Claims

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Application Information

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IPC IPC(8): H01F6/04H01F6/06G01R33/31
CPCG01R33/31H01F6/04H01F6/06G01R33/3403G01R33/3804G01R33/3815
Inventor J·欣德尔R·绍韦克尔
Owner BRUKER SWITZERLAND AG
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