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Narrow-space high-efficiency cooling device with multi-pipe embedded interlayer flow resistance connected in series
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A technology for cooling devices and narrow spaces, which can be used in indirect heat exchangers, fixed tubular conduit assemblies, superconducting magnets/coils, etc., and can solve problems such as occupancy and heat insulation difficulties
Inactive Publication Date: 2015-07-15
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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However, due to the high temperature of the high-temperature furnace and the fact that it takes up a certain amount of space, and the low-calibersuperconducting magnet has a small diameter, it becomes very difficult to insulate the high-temperature furnace from the liquid helium.
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Embodiment 1
[0029] Example 1: Basic structure of a narrow space powerful cooling device with multi-tube nested interlayer flow resistance connected in series
[0030] See attached figure 1In this embodiment, the basic structure of a multi-tube nested interlayer flow resistance series narrow space powerful cooling device includes three tubes with increasing diameters, which are called tube A 1, tube B 2 and tube C 3 from thin to thick. It is characterized in that: one end of tube A is sealed, called the bottom cover of tube A, the other end is open, called the top of tube A, and one end of tube C is also sealed, called the bottom cover of tube C. Tube C is coaxially inserted in the manner of back cover to back cover, but the back covers of the two are not in contact, and said tube B is coaxially inserted into the gap between tube A and tube C and does not contact the bottom cover of tube C, forming The flow resistance of the gap between tubes A and B is in series with the flow resistance ...
Embodiment 2
[0033] Embodiment 2: A structure in which two layers of pipes are nested coaxially outside the C pipe
[0034] See attached figure 2 In this embodiment, two layers of pipes are nested coaxially outside the C pipe 3 in the above-mentioned embodiment 1. The inner pipe is called the D pipe 6, and the outermost pipe is called the E pipe 7. The D tube has no back cover, while the E tube has a back cover, the D tube does not touch the E tube back cover, and the E tube back cover is wrapped outside the C tube back cover, and does not contact it, forming the flow resistance of the B tube gap and the D tube gap. The flow resistance series structure of the gap between the E tubes, at the top of the A tube, the gap between the B and D tubes closes into a channel opening, which is called the third channel port 8, and the gap between the D and E tubes closes into another channel port, called the fourth channel port 9.
[0035] The working principle of this structure is the same as that ...
Embodiment 3
[0039] Embodiment 3: The structure of coaxially nesting a layer of pipes outside the C pipe
[0040] See attached image 3 In this embodiment, a layer of pipe is nested outside the C pipe 3 in the above-mentioned embodiment 1, which is called the outer pipe A 10. The outer pipe A has a back cover, and the back cover is wrapped outside the bottom cover of the C tube, and Not in contact with it, at the top of the A pipe, the gap between the outer pipe A and the C pipe closes to form a channel opening, which is called the vacuum suction port A 11 . Vacuum the gap between outer tube A and tube C through vacuum port A to form a vacuum insulation layer, which is used to isolate tube C from the influence of the external environment, which is very important for superconducting magnets with cryogenic calibers. The superconducting magnet is immersed in liquid helium, and the temperature of liquid helium is very low (4.2K). This vacuum insulation layer can greatly reduce the heat conduc...
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Abstract
The invention discloses a narrow-space high-efficiency cooling device with multi-pipe embedded interlayer flow resistance connected in series. The cooling device comprises three pipes with increasing diameters, namely an A pipe, a B pipe and a C pipe from thin to thick. The cooling device is characterized in that one end of the A pipe is sealed and referred to as the sealed bottom of the A pipe; the other end of the A pipe is open and referred to as the top end of the A pipe; one end of the C pipe is sealed and referred to as the sealed bottom of the C pipe; the A pipe is coaxially inserted into the C pipe in a sealed bottom-sealed bottom manner, but the sealed bottoms of the A pipe and the C pipe are not contacted; the B pipe is coaxially inserted into a gap between the A pipe and the C pipe, but is not contacted with the sealed bottom of the C pipe to form a structure that flow resistance of a gap between the A pipe and the B pipe is connected in series with flow resistance of a gap between the B pipe and the C pipe; the gap between the A pipe and the B pipe is closed to form a channel port referred to as a first channel port at the top end of the A pipe; and the gap between the B pipe and the C pipe is closed to form another channel port referred to as a second channel port at the top end of the A pipe. According to the cooling device, the gaps between the pipes are very small and the outside diameter of the whole device is also very small, so that the cooling device can be applied to a narrow space of a superconducting magnet.
Description
technical field [0001] The invention relates to a cooling device, in particular to a narrow-space powerful cooling device in which multi-tube nested interlayer flow resistances are connected in series. Background technique [0002] Since P.de Rango et al. reported on Nature in 1991 that the grain orientation and superconductivity of the YBCO high-temperature superconducting material prepared under a 5T strong magnetic field environment have been effectively improved (P.de Rango et al., Nature, 349, 770(1991)), the application of strong magnetic field in material science has received extensive attention. Existing high-temperature heat treatment devices used in a strong magnetic field environment are basically designed based on room-temperature aperture superconducting magnets. For example, in 1997, Kazuo Watanabe et al. reported a high-temperature treatment device for 11T room-temperature aperture superconducting magnets and used It handles YBa 2 Cu 3 o 7 Block material s...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/04F28D7/10
Inventor 侯玉斌陆轻铀
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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