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A superconducting magnet liquid helium container including a vacuum chamber

A superconducting magnet and vacuum cavity technology, applied in superconducting magnets/coils, magnetic objects, electrical components, etc., can solve problems such as waste, achieve simple structure, reasonable design, and control the evaporation rate of liquid helium

Active Publication Date: 2017-03-29
ALLTECH MEDICAL SYST
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  • Abstract
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Problems solved by technology

[0003] Since superconducting MR magnets are limited by the axial length and coil diameter in practical applications, as well as the imaging range and magnetic field distribution, cryogenic vessels are usually large in size, with an effective volume of more than 2000L. In the case of stable operation and controlled liquid helium evaporation rate, it is often wasteful to completely fill this space with liquid helium

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  • A superconducting magnet liquid helium container including a vacuum chamber

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a superconducting magnet liquid helium container comprising a vacuum chamber disclosed by the present invention includes a liquid helium storage tank 1 and an outer cold shield 3, the liquid helium storage tank 1 is arranged inside the outer cold shield 3, and the liquid helium storage tank A vacuum layer 2 is provided between 1 and the outer cold screen 3, and the vacuum layer 2 has a heat insulation effect to prevent external heat from being transferred to the liquid helium storage tank 1 through the outer cold screen 3; the liquid helium storage tank 1 is provided with a main Coil bobbin 4, shielding coil bobbin 6 and vacuum cavity, main coil bobbin 4 is provided with main wire slot 5 for main coil winding, shielding coil bobbi...

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Abstract

The invention discloses a superconducting magnet liquid helium container comprising a vacuum chamber. The superconducting magnet liquid helium container comprises a liquid helium storage tank and an outer cold screen. The liquid helium storage tank is disposed within the outer cold screen; a vacuum layer is provided between the liquid helium storage tank and the outer cold screen; a main bobbin, a shielding bobbin and the vacuum chamber are provided in the liquid helium storage tank. The superconducting magnet liquid helium container has the advantages that operational safety and stability of magnets can be guaranteed, required usage of the liquid helium is less, the cost is lowered, and liquid helium evaporation is effectively controlled.

Description

technical field [0001] The invention relates to a superconducting magnet coolant container, in particular to a superconducting magnet liquid helium container containing a vacuum cavity. Background technique [0002] Since the 1980s, superconducting technology has been widely used in medical imaging science, the most successful of which is superconducting magnetic resonance imaging technology and its equipment, referred to as superconducting MR. The superconducting magnet is one of the most basic and important components in this medical equipment system, which can generate an axial uniform magnetic field in the scanning area. The coils that generate this magnetic field are made of superconducting wires. Usually, several superconducting coils are arranged in a closed cryogenic container according to a certain size and position, and the coils are offset by specific support methods. The electromagnetic force maintains the stability of the relative position. The low-temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F6/04
Inventor 贾敬朝赵正彪张涛
Owner ALLTECH MEDICAL SYST
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