CN104779031B - A kind of narrow space potent cooling device of the nested interlayer flow resistance series connection of multitube - Google Patents
A kind of narrow space potent cooling device of the nested interlayer flow resistance series connection of multitube Download PDFInfo
- Publication number
- CN104779031B CN104779031B CN201410030400.7A CN201410030400A CN104779031B CN 104779031 B CN104779031 B CN 104779031B CN 201410030400 A CN201410030400 A CN 201410030400A CN 104779031 B CN104779031 B CN 104779031B
- Authority
- CN
- China
- Prior art keywords
- pipe
- tube
- back cover
- referred
- flow resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 239000011229 interlayer Substances 0.000 title claims abstract description 23
- 230000003389 potentiating effect Effects 0.000 title claims abstract 8
- 210000003041 ligament Anatomy 0.000 claims abstract 16
- 239000010410 layer Substances 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 description 27
- 239000002826 coolant Substances 0.000 description 24
- 239000001307 helium Substances 0.000 description 22
- 229910052734 helium Inorganic materials 0.000 description 22
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000009413 insulation Methods 0.000 description 9
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- BMTAFVWTTFSTOG-UHFFFAOYSA-N Butylate Chemical compound CCSC(=O)N(CC(C)C)CC(C)C BMTAFVWTTFSTOG-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 description 1
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
Description
技术领域technical field
本发明涉及一种冷却装置，特别涉及一种多管嵌套夹层流阻串联的窄空间强效冷却装置。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.
背景技术Background technique
自1991年P.de Rango等人在Nature上报道了在5T强磁场环境下制备的YBCO高温超导材料其晶粒取向和超导性能得到有效提高后(P.de Rango et al.，Nature，349，770(1991))，强磁场在材料科学中的应用受到了广泛的关注。现有的用于强磁场环境下的高温热处理装置基本上都是基于室温孔径超导磁体设计的，如1997年Kazuo Watanabe等人报道了一种用于11T室温孔径超导磁体的高温处理装置并用其处理了YBa2Cu3O7块材样品(Jpn.J.Appl.Phys.，36，L637(1997))，2006年Yanwei Ma等人报道了一种用于15T室温孔径超导磁体的高温热处理装置并用其处理了MgB2样品(Jpn.J.Appl.Phys.，45，L493(2006))，而用于低温孔径超导磁体的高温处理装置尚未见报道。虽然低温孔径超导磁体能提供更高的磁场环境(目前已能达到22T，英国牛津公司生产)，但由于其磁体口径是浸泡在液氦中的，温度非常低(4.2K)且口径很小(仅几个厘米)，而一般的材料制备是需要在高温下进行的，比如生长单晶一般需要温度在1000度以上，因此要在低温孔径超导磁体提供的强磁场环境下进行材料制备就需要一个绝热性能非常好的高温炉安装在超导磁体中。但由于高温炉温度很高且其本身要占用一定的空间，而低温口径的超导磁体的口径又很小，这就使得对高温炉和液氦之间进行绝热就变得非常困难。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 processed YBa 2 Cu 3 O 7 bulk samples (Jpn.J.Appl.Phys., 36, L637 (1997)). In 2006, Yanwei Ma et al. reported a high temperature for 15T room temperature aperture superconducting magnets A heat treatment device has been used to process MgB 2 samples (Jpn.J.Appl.Phys., 45, L493(2006)), while a high temperature treatment device for low temperature aperture superconducting magnets has not been reported yet. Although low-temperature aperture superconducting magnets can provide a higher magnetic field environment (currently up to 22T, produced by Oxford, UK), but because the magnet caliber is immersed in liquid helium, the temperature is very low (4.2K) and the caliber is small (only a few centimeters), and the general material preparation needs to be carried out at high temperature. For example, the growth of a single crystal generally requires a temperature above 1000 degrees. A high temperature furnace with very good thermal insulation properties is required to be installed in the superconducting magnet. 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-caliber superconducting magnet has a small diameter, it becomes very difficult to insulate the high-temperature furnace from the liquid helium.
为此，我们提出一种多管嵌套夹层流阻串联的窄空间强效冷却装置，能够大大减少绝热装置所占用的空间，从而实现在低温口径超导磁体的强磁场环境中进行高温下的材料制备。For this reason, we propose a narrow-space powerful cooling device with multi-tube nested interlayer flow resistors connected in series, which can greatly reduce the space occupied by the adiabatic device, thereby realizing high-temperature cooling in the strong magnetic field environment of low-temperature aperture superconducting magnets. Material preparation.
发明内容Contents of the invention
本发明的目的：为能够在低温口径超导磁体的强磁场环境中进行高温下的材料制备提供一种多管嵌套夹层流阻串联的窄空间强效冷却装置。The purpose of the present invention is to provide a narrow-space powerful cooling device with multiple nested interlayer flow resistances connected in series for material preparation at high temperature in the strong magnetic field environment of a low-temperature caliber superconducting magnet.
本发明实现上述目的的技术方案是：The technical scheme that the present invention realizes above-mentioned purpose is:
本发明一种多管嵌套夹层流阻串联的窄空间强效冷却装置，包括直径递增的三根管子，由细到粗分别称为甲管、乙管和丙管，其特征是：甲管的一端是密封的，称为甲管封底，其另一端是敞口的，称为甲管顶端，丙管的一端也是密封的，称为丙管封底，所述甲管以封底对封底的方式共轴地插入丙管，但二者的封底并不接触，所述乙管共轴地插入到甲管和丙管之间的间隙中并和丙管封底不接触，形成甲乙管间隙的流阻与乙丙管间隙的流阻串联的结构，在甲管顶端处，甲乙管间隙收口成一个通道口，称为第一通道口，乙丙管间隙收口成另一个通道口，称为第二通道口。The present invention is a narrow-space powerful cooling device with multi-tube nested interlayer flow resistance connected in series, including three tubes with increasing diameters, which are respectively called tube A, tube B and tube C from thin to thick, and is characterized in that: One end 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 axially inserted, but the bottom covers of the two tubes do not touch. The tube B is coaxially inserted into the gap between tube A and tube C and does not touch the bottom cover of tube C, forming the flow resistance of the gap between tubes A and B. The flow resistance series structure of the gap between the Ethylene and Propylene Gap tubes, at the top of the A tube, the gap between the A and B tubes closes into a channel opening, which is called the first channel opening, and the gap between the Ethylene and Propylene Gap tubes closes into another channel opening, called the second channel opening .
本发明一种多管嵌套夹层流阻串联的窄空间强效冷却装置，其特征是：在丙管外再共轴地嵌套两层管子，其较内层的管子称为丁管，而最外层的管子称为戊管，所述丁管没有封底，而戊管有封底，丁管与戊管封底不接触，戊管封底包在所述丙管封底之外，且与之不接触，形成丙丁管间隙的流阻与丁戊管间隙的流阻串联的结构，在甲管顶端处，丙丁管间隙收口成一个通道口，称为第三通道口，丁戊管间隙收口成另一个通道口，称为第四通道口。The present invention is a multi-pipe nested interlayer flow resistance series narrow space powerful cooling device, which is characterized in that two layers of pipes are coaxially nested outside the C pipe, and the inner pipe is called a D pipe, and The outermost tube is called the E tube. 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 touch it. , forming a structure in which the flow resistance of the gap between the B-D tube and the flow resistance of the gap between the D-V tubes is connected in series. The channel port is called the fourth channel port.
本发明一种多管嵌套夹层流阻串联的窄空间强效冷却装置，其特征是：在丙管外再嵌套一层管子，称为外管甲，该外管甲有封底，该封底包在所述丙管封底之外，且与之不接触，在所述甲管的顶端处，外管甲与丙管间的间隙收口成一个通道口，称为真空抽口甲。The present invention is a kind of narrow-space powerful cooling device with multi-pipe nested interlayer flow resistance connected in series. Wrapped outside the bottom cover of the tube C and not in contact with it, at the top of the tube A, the gap between the outer tube A and the tube C is closed to form a channel opening, which is called a vacuum port A.
本发明一种多管嵌套夹层流阻串联的窄空间强效冷却装置，其特征是：在戊管外再嵌套一层管子，称为外管乙，该外管乙有封底，该封底包在所述戊管封底之外，且与之不接触，在所述甲管的顶端处，外管乙与戊管间的间隙收口成一个通道口，称为真空抽口乙。The present invention is a multi-tube nested interlayer flow resistance series narrow space powerful cooling device, which is characterized in that a layer of tubes is nested outside the E tube, called the outer tube B, and the outer tube B has a bottom cover, the bottom cover Wrapped outside the bottom cover of the E tube, and not in contact with it, at the top of the A tube, the gap between the outer tube B and the E tube is closed to form a channel opening, which is called the vacuum port B.
本发明一种多管嵌套夹层流阻串联的窄空间强效冷却装置的结构特点在于：The structural features of a narrow-space powerful cooling device with multi-tube nested interlayer flow resistance connected in series in the present invention are as follows:
所述的甲乙管间隙的流阻与乙丙管间隙的流阻是串联的。The flow resistance of the gap between the A and B pipes is connected in series with the flow resistance of the gap between the B and P pipes.
所述的甲乙管间隙的截面积与乙丙管间隙的截面积是相等的。The cross-sectional area of the gap between the pipes A and B is equal to the cross-sectional area of the gap between the pipes B and C.
所述的丙丁管间隙的流阻与丁戊管间隙的流阻是串联的。The flow resistance of the gap between the acetonitrile tube and the flow resistance of the gap between the butyl and pentamethylene tubes are connected in series.
所述的丙丁管间隙的截面积与丁戊管间隙的截面积是相等的。The cross-sectional area of the gap between the acetonitrile tube and the gap between the butylate tube is equal.
所述的管子均为金属管子。Said pipes are all metal pipes.
本发明的工作原理为：所述甲管、乙管和丙管三根管子是共轴嵌套的，在甲管封底端，由于乙管是不封底的并和丙管封底不接触，而甲管封底和丙管封底也是不接触的，这样就形成甲管与乙管之间间隙的流阻和乙管与丙管之间间隙的流阻串联的通道。在甲管顶端处，甲乙管间隙收口成第一通道口，乙丙管间隙收口成第二通道口。工作的时候，将冷却介质(一般为液氮，温度为77K)从第一通道口导入，冷却介质经过甲管和乙管之间的间隙，通过甲管封底端的流阻串联的通道进入到乙管和丙管之间的间隙，最后通过第二通道口导出，完成对甲管管壁的降温。The working principle of the present invention is: the three pipes of pipe A, pipe B and pipe C are coaxially nested. The back cover and the C tube back cover are not in contact, so that the flow resistance of the gap between the A tube and the B tube and the flow resistance of the gap between the B tube and the C tube are connected in series. At the top of tube A, the gap between tubes A and B is closed to form the first channel opening, and the gap between tubes B and C is closed to form the second channel port. When working, the cooling medium (generally liquid nitrogen with a temperature of 77K) is introduced from the first channel port, the cooling medium passes through the gap between the A tube and the B tube, and enters the B channel through the flow resistance series channel at the bottom end of the A tube. The gap between the tube and the tube C is finally exported through the second passage port to complete the cooling of the tube wall of the tube A.
由于冷却介质通过第一通道口进入到甲管和乙管子之间的间隙后就直接与甲管进行热交换从而带走甲管管壁上的热量，这样的热交换效率是非常高的，因而甲管和乙管之间的夹层以及乙管和丙管之间的夹层可以很小，由于这两个间隙的截面积是相等的，因此两个间隙内的冷却介质的流量是相同的，这就能使冷却介质的流速稳定从而使降温效率最大化。由于管子之间的间隙可以很小，所以乙管和丙管所占空间也很小，整个装置的外径也就很小，从而可以应用于超导磁体的狭窄空间中。Since the cooling medium enters the gap between tube A and tube B through the first passage port, it directly exchanges heat with tube A to take away the heat on the tube wall of tube A. Such heat exchange efficiency is very high, so The interlayer between pipe A and pipe B and the interlayer between pipe B and pipe C can be very small. Since the cross-sectional areas of these two gaps are equal, the flow rate of the cooling medium in the two gaps is the same, which means The flow rate of the cooling medium can be stabilized to maximize the cooling efficiency. Since the gap between the tubes can be very small, the space occupied by the B tube and the C tube is also very small, and the outer diameter of the whole device is also very small, so that it can be applied in the narrow space of the superconducting magnet.
所述在丙管外再共轴地嵌套的两层管子，即较内层丁管和最外层戊管，丁管没有封底，而戊管有封底，由于丁管与戊管封底不接触，而戊管封底包在所述丙管封底之外，且与之不接触，这就形成丙丁管间隙的流阻与丁戊管间隙的流阻串联的结构，在甲管顶端处，丙丁管间隙收口成第三通道口，丁戊管间隙收口成第四通道口。该结构可按以下两种方式工作：The two layers of tubes coaxially nested outside the C tube, that is, the inner D tube and the outermost E tube, the D tube has no back cover, and the E tube has a back cover, because the D tube and the E tube have no bottom cover. , and the bottom cover of the tube E is wrapped outside the bottom cover of the tube C and does not contact it, which forms a structure in which the flow resistance of the gap between the tube B and the tube gap is connected in series. At the top of the tube A, the tube B The gap is closed to form the third channel opening, and the gap of the D-V tube is closed to form the fourth channel port. This structure works in two ways:
(a)在将冷却介质从第一通道口导入使甲管管壁降温的同时将冷却介质从第三通道口导入，冷却介质经过丙管和丁管之间的间隙，通过丙管封底端的流阻串联的通道进入到丁管和戊管之间的间隙，最后通过第四通道口导出，完成对丙管管壁的降温。增加此两层管子得目的是在甲乙管间隙和乙丙管间隙的冷却介质的冷却功率不够的情况下再增加一层冷却，使甲管上的热量对外界的影响降到最低。(a) When the cooling medium is introduced from the first passage port to lower the temperature of the tube wall of the A pipe, the cooling medium is introduced from the third passage port, and the cooling medium passes through the gap between the C pipe and the D pipe, and passes through the flow at the bottom end of the C pipe. The channel of resistance series enters the gap between tube D and tube E, and finally leads out through the opening of the fourth channel to complete the cooling of the wall of tube C. The purpose of increasing these two layers of pipes is to add another layer of cooling when the cooling power of the cooling medium in the gap between the pipes A and B and the gap between the pipes B and C is not enough, so as to minimize the impact of the heat on the pipe A on the outside.
(b)在从第三通道口导入冷却介质使丙管管壁降温的同时将第一通道口和第二通道口中的一个密封，另一个作为真空抽口并对甲管和乙管之间的间隙以及乙管和丙管之间的间隙抽真空，此真空用于对甲管和丙管之间进行绝热，这有利于保持甲管维持在一个恒定的温度。(b) When the cooling medium is introduced from the third channel port to cool down the temperature of the tube wall of the third channel, one of the first channel port and the second channel port is sealed, and the other is used as a vacuum port to clean the gap between the A tube and the B tube. The gap and the gap between tube B and tube C are evacuated, and this vacuum is used to insulate between tube A and tube C, which is beneficial to keep tube A at a constant temperature.
所述在丙管外再嵌套一层外管甲，该外管甲有封底，该封底包在所述丙管封底之外，且与之不接触，在所述甲管的顶端处，外管甲与丙管间的间隙收口成真空抽口甲。通过真空抽口甲对外管甲和丙管之间的间隙抽真空形成真空绝热层，该真空绝热层用于隔离丙管对外界环境的影响，这对于低温口径的超导磁体非常重要，低温口径的超导磁体是浸泡在液氦中的，液氦的温度是非常低的(4.2K)，此真空绝热层可以大大降低冷却介质和液氦之间的热传导，既能防止液氦将冷却介质(一般为液氮，温度为77K)冻结，也能减少液氦的损耗。A layer of outer tube A is nested outside the C tube, and the outer tube A has a back cover. The back cover is wrapped outside the back cover of the C tube and does not contact it. The gap between pipe A and pipe C is closed into a vacuum port A. 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 conduction between the cooling medium and the liquid helium, which can prevent the liquid helium from cooling the medium (Generally liquid nitrogen, the temperature is 77K) freezing can also reduce the loss of liquid helium.
所述在戊管外再嵌套一层外管乙，该外管乙有封底，该封底包在所述戊管封底之外，且与之不接触，在所述甲管的顶端处，外管乙与戊管之间的间隙收口成真空抽口乙。通过真空抽口甲乙对外管乙和戊管之间的间隙抽真空形成真空绝热层，该真空绝热层用于隔离戊管对外界环境的影响，这对于低温口径的超导磁体非常重要，低温口径的超导磁体是浸泡在液氦中的，液氦的温度是非常低的(4.2K)，此真空绝热层可以大大降低冷却介质和液氦之间的热传导，既能防止液氦将冷却介质(一般为液氮，温度为77K)冻结，也能减少液氦的损耗。A layer of outer tube B is nested outside the E tube, and the outer tube B has a back cover, which is wrapped outside the back cover of the E tube and does not contact it. At the top of the A tube, the outer tube The gap between pipe B and pipe E is closed to form vacuum port B. Vacuumize the gap between outer tube B and tube E through vacuum port A and B to form a vacuum insulation layer, which is used to isolate tube E 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 conduction between the cooling medium and the liquid helium, which can prevent the liquid helium from cooling the medium (Usually liquid nitrogen at a temperature of 77K) freezing can also reduce the loss of liquid helium.
附图说明Description of drawings
图1是本发明一种多管嵌套夹层流阻串联的窄空间强效冷却装置基本结构示意图。Fig. 1 is a schematic diagram of the basic structure of a narrow space powerful cooling device with multi-tube nested interlayer flow resistance connected in series according to the present invention.
图2是本发明在丙管外再共轴地嵌套两层管子的结构示意图。Fig. 2 is a structural schematic view of the present invention coaxially nesting two layers of pipes outside the C pipe.
图3是本发明在丙管外共轴地嵌套一层管子的结构示意图Fig. 3 is the structural representation of the present invention coaxially nesting a layer of pipes outside the C pipe
图4是本发明在戊管外共轴地嵌套一层管子的结构示意图。Fig. 4 is a structural diagram of coaxially nesting a layer of pipes outside the pentatube according to the present invention.
图中标号：1甲管、2乙管、3丙管、4第一通道口、5第二通道口、6丁管、7戊管、8第三通道口、9第四通道口、10外管甲、11真空抽口甲、12外管乙、13真空抽口乙。Labels in the figure: 1 pipe A, 2 pipe B, 3 pipe C, 4 the first passage opening, 5 the second passage opening, 6 D pipe, 7 E pipe, 8 the third passage opening, 9 the fourth passage opening, 10 outer Pipe A, 11 vacuum outlet A, 12 outer tube B, 13 vacuum outlet B.
以下通过具体实施方式和结构附图对本发明作进一步的描述。The present invention will be further described below through specific embodiments and structural drawings.
具体实施方式detailed description
实施例1：一种多管嵌套夹层流阻串联的窄空间强效冷却装置基本结构Example 1: Basic structure of a narrow space powerful cooling device with multi-tube nested interlayer flow resistance connected in series
参见附图1，本实施例一种多管嵌套夹层流阻串联的窄空间强效冷却装置基本结构，包括直径递增的三根管子，由细到粗分别称为甲管1、乙管2和丙管3，其特征是：甲管的一端是密封的，称为甲管封底，其另一端是敞口的，称为甲管顶端，丙管的一端也是密封的，称为丙管封底，所述甲管以封底对封底的方式共轴地插入丙管，但二者的封底并不接触，所述乙管共轴地插入到甲管和丙管之间的间隙中并和丙管封底不接触，形成甲乙管间隙的流阻与乙丙管间隙的流阻串联的结构，在甲管顶端处，甲乙管间隙收口成一个通道口，称为第一通道口4，乙丙管间隙收口成另一个通道口，称为第二通道口5。Referring to accompanying drawing 1, the basic structure of a narrow-space powerful cooling device with multi-tube nested interlayer flow resistance connected in series in this embodiment includes three tubes with increasing diameters, which are respectively called tube A 1, tube B 2 and tube B from thin to thick. Tube C 3 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, The tube A is coaxially inserted into the tube C in a manner of back cover to bottom cover, but the back covers of the two are not in contact, and the tube B is coaxially inserted into the gap between the tube A and tube C and sealed with the tube C No contact, forming a structure in which the flow resistance of the gap between the A and B tubes and the flow resistance of the B and C tube gap are connected in series. At the top of the A tube, the gap between the A and B tubes closes into a channel opening, which is called the first channel port 4, and the gap between the B and C tubes closes. into another channel port, called the second channel port 5.
本实施例的原理为：所述甲管、乙管和丙管三根管子是共轴嵌套的，在甲管封底端，由于乙管是不封底的并和丙管封底不接触，而甲管封底和丙管封底也是不接触的，这样就形成甲管与乙管之间间隙的流阻和乙管与丙管之间间隙的流阻串联的通道。在甲管顶端处，甲乙管间隙收口成一个通道口，称为第一通道口，乙丙管间隙收口成另一个通道口，称为第二通道口。工作的时候，将冷却介质从第一通道口导入，冷却介质经过甲管和乙管之间的间隙，通过甲管封底端的流阻串联的通道进入到乙管和丙管之间的间隙，最后通过第二通道口导出，完成对甲管管壁的降温。The principle of this embodiment is: the three pipes of pipe A, pipe B and pipe C are coaxially nested. The back cover and the C tube back cover are not in contact, so that the flow resistance of the gap between the A tube and the B tube and the flow resistance of the gap between the B tube and the C tube are connected in series. At the top of the A pipe, the gap between the A and B pipes is closed to form a passage opening, which is called the first passage opening, and the gap between the B and C pipes is closed to form another passage opening, which is called the second passage opening. When working, the cooling medium is introduced from the first channel port, the cooling medium passes through the gap between the A tube and the B tube, and enters the gap between the B tube and the C tube through the flow resistance series channel at the bottom end of the A tube, and finally It is exported through the second channel port to complete the cooling of the wall of the A tube.
由于冷却介质通过第一通道口进入到甲管和乙管子之间的间隙后就直接与甲管进行热交换从而带走甲管管壁上的热量，这样的热交换效率是非常高的，因而甲管和乙管之间的夹层以及乙管和丙管之间的夹层可以很小，由于这两个间隙的截面积是相等的，因此两个间隙内的冷却介质的流量是相同的，这就能使冷却介质的流速稳定从而使降温效率最大化。由于管子之间的间隙可以很小，所以乙管和丙管所占空间也很小，整个装置的外径也就很小，从而可以应用于超导磁体的狭窄空间中。Since the cooling medium enters the gap between tube A and tube B through the first passage port, it directly exchanges heat with tube A to take away the heat on the tube wall of tube A. Such heat exchange efficiency is very high, so The interlayer between pipe A and pipe B and the interlayer between pipe B and pipe C can be very small. Since the cross-sectional areas of these two gaps are equal, the flow rate of the cooling medium in the two gaps is the same, which means The flow rate of the cooling medium can be stabilized to maximize the cooling efficiency. Since the gap between the tubes can be very small, the space occupied by the B tube and the C tube is also very small, and the outer diameter of the whole device is also very small, so that it can be applied in the narrow space of the superconducting magnet.
实施例2：在丙管外再共轴地嵌套两层管子的结构Embodiment 2: A structure in which two layers of pipes are nested coaxially outside the C pipe
参见附图2，本实施例是在上述实施例1中的丙管3外再共轴地嵌套两层管子，其较内层的管子称为丁管6，而最外层的管子称为戊管7，所述丁管没有封底，而戊管有封底，丁管与戊管封底不接触，戊管封底包在所述丙管封底之外，且与之不接触，形成丙丁管间隙的流阻与丁戊管间隙的流阻串联的结构，在甲管顶端处，丙丁管间隙收口成一个通道口，称为第三通道口8，丁戊管间隙收口成另一个通道口，称为第四通道口9。Referring to accompanying drawing 2, present embodiment is that two layers of pipes are nested coaxially outside the C pipe 3 in the above-mentioned embodiment 1, and its inner pipe is called D pipe 6, and the outermost pipe is called D pipe 6. E tube 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, the E tube bottom cover is wrapped outside the C tube back cover, and does not contact it, forming the gap between the B and D tubes The structure in which the flow resistance and the flow resistance of the gap between the DEP tubes are connected in series, at the top of the A tube, the gap between the BD tubes closes into a channel opening, which is called the third channel port 8, and the gap between the DEP tubes closes into another channel port, called Exit 9 of the fourth passage.
此结构的工作原理与上述实施例1相同，冷却介质从第三通道口导入，流经丙管和丁管之间的间隙并直接对丙管管壁降温，然后通过丙管封底端的流阻串联的通道进入到丁管和戊管之间的间隙，最后通过第四通道口导出。The working principle of this structure is the same as that of the above-mentioned embodiment 1. The cooling medium is introduced from the third channel, flows through the gap between the C pipe and the D pipe, and directly cools the wall of the C pipe, and then is connected in series through the flow resistance at the bottom end of the C pipe. The channel enters the gap between the D tube and the E tube, and is finally exported through the fourth channel port.
该结构可按以下两种方式工作：This structure works in two ways:
(a)在将冷却介质从第一通道口导入使甲管管壁降温的同时将冷却介质从第三通道口导入，冷却介质经过丙管和丁管之间的间隙，通过丙管封底端的流阻串联的通道进入到丁管和戊管之间的间隙，最后通过第四通道口导出，完成对丙管管壁的降温。增加此两层管子得目的是在上述实施例1的冷却功率不够的情况下再增加一层冷却，使甲管上的热量对外界的影响降到最低。(a) When the cooling medium is introduced from the first passage port to lower the temperature of the tube wall of the A pipe, the cooling medium is introduced from the third passage port, and the cooling medium passes through the gap between the C pipe and the D pipe, and passes through the flow at the bottom end of the C pipe. The channel of resistance series enters the gap between tube D and tube E, and finally leads out through the opening of the fourth channel to complete the cooling of the wall of tube C. The purpose of increasing these two layers of pipes is to add another layer of cooling when the cooling power of the above-mentioned embodiment 1 is not enough, so that the heat on the first pipe has the lowest impact on the outside world.
(b)在从第三通道口导入冷却介质使丙管管壁降温的同时将第一通道口和第二通道口中的一个密封，另一个作为真空抽口并对甲管和乙管之间的间隙以及乙管和丙管之间的间隙抽真空，此真空用于对甲管和丙管之间进行绝热，这有利于保持甲管维持在一个恒定的温度。(b) When the cooling medium is introduced from the third channel port to cool down the temperature of the tube wall of the third channel, one of the first channel port and the second channel port is sealed, and the other is used as a vacuum port to clean the gap between the A tube and the B tube. The gap and the gap between tube B and tube C are evacuated, and this vacuum is used to insulate between tube A and tube C, which is beneficial to keep tube A at a constant temperature.
实施例3：在丙管外共轴地嵌套一层管子的结构Embodiment 3: The structure of coaxially nesting a layer of pipes outside the C pipe
参见附图3，本实施例是在上述实施例1中的丙管3外再嵌套一层管子，称为外管甲10，该外管甲有封底，该封底包在所述丙管封底之外，且与之不接触，在所述甲管的顶端处，外管甲与丙管间的间隙收口成一个通道口，称为真空抽口甲11。通过真空抽口甲对外管甲和丙管之间的间隙抽真空形成真空绝热层，该真空绝热层用于隔离丙管对外界环境的影响，这对于低温口径的超导磁体非常重要，低温口径的超导磁体是浸泡在液氦中的，液氦的温度是非常低的(4.2K)，此真空绝热层可以大大降低冷却介质和液氦之间的热传导，既能防止液氦将冷却介质(一般为液氮，温度为77K)冻结，也能减少液氦的损耗。Referring to accompanying drawing 3, present embodiment is to nest a layer of pipe again outside the C pipe 3 in the above-mentioned embodiment 1, is called outer pipe A 10, and this outer pipe A has a back cover, and this back cover is wrapped in the C pipe bottom cover Outside, and not in contact with it, at the top of the A pipe, the gap between the outer pipe A and 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 conduction between the cooling medium and the liquid helium, which can prevent the liquid helium from cooling the medium (Generally liquid nitrogen, the temperature is 77K) freezing can also reduce the loss of liquid helium.
实施例4：在戊管外共轴地嵌套一层管子的结构Embodiment 4: The structure of coaxially nesting a layer of pipes outside the pentatube
参见附图4，本实施例是在上述实施例2中的戊管7外再嵌套一层管子，称为外管乙12，该外管乙有封底，该封底包在所述戊管封底之外，且与之不接触，在所述甲管的顶端处，外管乙与戊管间的间隙收口成一个通道口，称为真空抽口乙13。通过真空抽口甲乙对外管乙和戊管之间的间隙抽真空形成真空绝热层，该真空绝热层用于隔离戊管对外界环境的影响，这对于低温口径的超导磁体非常重要，低温口径的超导磁体是浸泡在液氦中的，液氦的温度是非常低的(4.2K)，此真空绝热层可以大大降低冷却介质和液氦之间的热传导，既能防止液氦将冷却介质(一般为液氮，温度为77K)冻结，也能减少液氦的损耗。Referring to accompanying drawing 4, present embodiment is to nest a layer of pipes outside the E tube 7 in the above-mentioned embodiment 2, is called outer tube B 12, and this outer tube B has a back cover, and this back cover is wrapped in the E tube bottom cover. Outside, and without contact with it, at the top of the tube A, the gap between the outer tube B and the tube E is closed to form a channel opening, which is called the vacuum port B 13 . Vacuumize the gap between outer tube B and tube E through vacuum port A and B to form a vacuum insulation layer, which is used to isolate tube E 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 conduction between the cooling medium and the liquid helium, which can prevent the liquid helium from cooling the medium (Usually liquid nitrogen at a temperature of 77K) freezing can also reduce the loss of liquid helium.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030400.7A CN104779031B (en) | 2014-01-15 | 2014-01-15 | A kind of narrow space potent cooling device of the nested interlayer flow resistance series connection of multitube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030400.7A CN104779031B (en) | 2014-01-15 | 2014-01-15 | A kind of narrow space potent cooling device of the nested interlayer flow resistance series connection of multitube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104779031A CN104779031A (en) | 2015-07-15 |
| CN104779031B true CN104779031B (en) | 2017-10-03 |
Family
ID=53620453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410030400.7A Expired - Fee Related CN104779031B (en) | 2014-01-15 | 2014-01-15 | A kind of narrow space potent cooling device of the nested interlayer flow resistance series connection of multitube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104779031B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038035B (en) * | 2020-09-18 | 2022-03-25 | 中国科学院合肥物质科学研究院 | Close-wound superconducting magnet refrigerating device based on interlayer lamination integral heat conduction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101048A (en) * | 1987-05-23 | 1988-12-14 | 中国科学院上海冶金研究所 | Oxide superconducting coil and manufacturing method thereof |
| US5018359A (en) * | 1989-06-30 | 1991-05-28 | Mitsubishi Denki Kabushiki Kaisha | Cryogenic refrigeration apparatus |
| US6324851B1 (en) * | 1999-12-09 | 2001-12-04 | Abb Power T&D Company Inc. | Cryostat for use with a superconducting transformer |
| CN102117690A (en) * | 2009-12-30 | 2011-07-06 | 中国船舶重工集团公司第七研究院 | Low-temperature super-conducting magnet system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02297906A (en) * | 1989-05-12 | 1990-12-10 | Toshiba Corp | Superconducting magnet device |
-
2014
- 2014-01-15 CN CN201410030400.7A patent/CN104779031B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101048A (en) * | 1987-05-23 | 1988-12-14 | 中国科学院上海冶金研究所 | Oxide superconducting coil and manufacturing method thereof |
| US5018359A (en) * | 1989-06-30 | 1991-05-28 | Mitsubishi Denki Kabushiki Kaisha | Cryogenic refrigeration apparatus |
| US6324851B1 (en) * | 1999-12-09 | 2001-12-04 | Abb Power T&D Company Inc. | Cryostat for use with a superconducting transformer |
| CN102117690A (en) * | 2009-12-30 | 2011-07-06 | 中国船舶重工集团公司第七研究院 | Low-temperature super-conducting magnet system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104779031A (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101796597B (en) | Cooling methods | |
| CN1794004B (en) | Superconducting technology device | |
| CN105571190B (en) | A kind of mechanical oscillation isolation consumes extremely low temp, refrigerating system without liquid helium | |
| CN100354992C (en) | Superconducting device with a superconducting magnet and a refrigeration unit | |
| CN106871546A (en) | A kind of loss biological specimen of liquid nitrogen zero freezes the freezing chamber of tank | |
| Mito et al. | Achievement of high heat removal characteristics of superconducting magnets with imbedded oscillating heat pipes | |
| CN105139992B (en) | Magnet device | |
| CN103366917B (en) | Refrigerating plant and high-temperature superconducting magnet refrigerating plant | |
| CN104700976B (en) | Cryostat, manufacturing method thereof, cooling method, magnetic resonance system | |
| US20180315530A1 (en) | Method and apparatus for cooling a superconducting device immersed in liquid nitrogen | |
| CN207651280U (en) | Superconducting magnet cooling system and magnetic resonance device | |
| JP5972368B2 (en) | Cooling container | |
| CN101498538B (en) | Double-coil pipe cold steam refrigerating low-loss liquid helium Dewar | |
| WO2022077570A1 (en) | Single-end countercurrent refrigerating system for superconducting cable | |
| CN106449006B (en) | A kind of conduction cooling magnet based on ReBCO coating conductor pieces | |
| CN109442798B (en) | Refrigeration system, closed-loop refrigeration cycle and method for injecting refrigerant | |
| CN104779031B (en) | A kind of narrow space potent cooling device of the nested interlayer flow resistance series connection of multitube | |
| US8357211B2 (en) | ADR salt pill design and crystal growth process for hydrated magnetic salts | |
| JP2010171152A (en) | Heat conduction plate and superconductive device | |
| JP5243154B2 (en) | Current leads for superconducting equipment | |
| CN205746012U (en) | A kind of vertical vessel for storing cryogenic fluids | |
| CN112271052B (en) | A superconducting magnet cryogenic system | |
| CN103292618B (en) | A kind of heat exchanger | |
| CN103322357A (en) | Compound liquid nitrogen liquid helium delivery pipe joint with potential isolating function | |
| CN213070771U (en) | Superconducting magnet cryogenic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 Termination date: 20200115 |