Cryostat, manufacturing method thereof, cooling method, magnetic resonance system
A technology of cryostat and manufacturing method, applied to instruments, magnetic objects, measuring magnetic variables, etc., can solve problems such as poor pre-cooling effect of shielding layer, and achieve the effects of saving pre-cooling costs, slowing down the heating process, and speeding up the cooling process.
Active Publication Date: 2017-03-08
SHANGHAI UNITED IMAGING HEALTHCARE
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] In order to solve the problem of poor pre-cooling effect of the shielding layer of the magnetic resonance system in the prior art, the present invention provides a cryostat with higher shielding layer pre-cooling efficiency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0052] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below. Secondly, the present invention is described in detail by means of schematic diagrams. When describing the embodiments of the present invention in detail, for convenience of explanation, the schematic diagrams are only examples, which should not limit the protection scope of the present invention.
[0053] As mentioned in the background technology, when the cryostat in the magnetic resonance system is precooled, the shielding layer should be lowered to 50K as quickly as possible. In the prior art, copper tubes are arranged on ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a low-temperature retainer. The low-temperature retainer comprises a first shell, a tank used for accommodating a cooling medium, a through pipe and a guide pipe, wherein the first shell is positioned on the outer side of the tank; a first cavity is formed between the first shell and the tank; the guide pipe is connected with the through pipe and the tank; the through pipe is fixed to the first shell, and the partial pipe wall of the through pipe is a corresponding composition of the first shell. Compared with the prior art, the low-temperature retainer provided by the technical scheme has the advantages that a shielding layer is provided with an independent heat exchange cavity; during the pre-cooling of a magnet, by injecting a cooling medium such as liquid helium or liquid nitrogen into the cavity, the cooling process of the shielding layer can be remarkably accelerated, and the pre-cooling cost is reduced; during the long-distance transportation of the magnet, by injecting the cooling medium such as the liquid nitrogen into the cavity of the shielding layer or charging cold helium evaporated in a liquid helium tank into the cavity of the shielding layer, the heating process of the shielding layer can be decelerated, and the transportation time is prolonged.
Description
technical field [0001] The invention relates to the field of magnetic resonance, in particular to a cryostat for a magnetic resonance system, a manufacturing method and a cooling method thereof. Background technique [0002] In magnetic resonance imaging technology, traditional superconducting magnets use liquid helium to cool superconducting coils. Since the latent heat of vaporization of liquid helium is very small, a cryostat with small heat leakage is required to hold liquid helium to reduce the temperature of liquid helium. Loss. figure 1 It is a traditional superconducting magnet cryostat structure, the liquid helium 1 is contained in the inner liquid helium tank 2, and the radiation-proof heat shield 3 is arranged outside the liquid helium tank 2, and the liquid helium tank 2 and the shielding layer 3 are hoisted by the suspension 6 On the outer vacuum cylinder 4. The shielding layer 3 and the liquid helium tank 2 are respectively connected to the first stage 7 (the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01F6/04G01R33/3815
CPCG01R33/3815H01F6/04
Inventor 申宝忠邹利军
Owner SHANGHAI UNITED IMAGING HEALTHCARE