CN114111156B - Modularized low-temperature refrigeration system device and construction method - Google Patents
Modularized low-temperature refrigeration system device and construction method Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
- F25D19/04—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors with more than one refrigeration unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention provides a modular low-temperature refrigeration system device and a construction method thereof, wherein the low-temperature refrigeration system device comprises a heat sink and at least one low-temperature refrigeration module, the low-temperature refrigeration module comprises a supporting frame and a refrigeration unit, the refrigeration unit is fixedly hung in the supporting frame through a suspension device, and the low-temperature refrigeration module is respectively and independently connected with the heat sink through a heat conduction element, so that heat transfer between two adjacent refrigeration units and between the refrigeration unit and the heat sink is realized. The invention adopts a modularized design mode, adopts a plurality of low-temperature refrigeration modules, each low-temperature refrigeration module provides perfect thermal, electric and magnetic interfaces, the thermal interface, the electric interface and the magnetic interface of each low-temperature refrigeration module are basically the same, most parts can be reused, the construction process is simplified, the installation and the debugging can be respectively carried out, and the refrigeration modules can be simply replaced in the later maintenance.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and relates to a modular low-temperature refrigeration system device and a construction method thereof.
Background
The cryogenic refrigeration technology is a refrigeration technology providing a cold source with a temperature below 1 Kelvin (4K), wherein the thermal switch technology is a key technology for controlling heat transfer and guaranteeing process heat insulation. The effect of the extremely low temperature refrigeration can be summarized into three aspects: (1) Providing an extreme physical environment to study or utilize the properties of a substance at extremely low temperatures, such as the phenomenon of helium 3 superflow (2.7 mK); (2) Substances have extremely small specific heat at extremely low temperatures, which is a requirement for some high-sensitivity elements, such as single-photon detectors (about 100 mK); (3) For attenuating the effect of thermal noise in electronic systems and increasing the signal-to-noise ratio, and thus measuring weak signals, such as quantum computers (about 100 mK). Commonly used cryogenic refrigeration techniques include helium 3 reduced pressure refrigeration, dilution refrigeration, adsorption refrigeration, and adiabatic demagnetization refrigeration.
Among them, adiabatic demagnetization is a solid-state refrigeration method, which has the outstanding advantages of being independent of gravity and rare working medium helium 3, compact and efficient, has become the mainstream cryogenic refrigeration technology for space application, and is also favored in ground application. The magnetocaloric effect is a property of the magnetic material that the material absorbs and releases heat due to the change of the internal magnetic entropy in the magnetization and demagnetization processes, is an inherent characteristic of the material, and the magnetic refrigeration realizes the refrigeration purpose through the magnetocaloric effect of the material, so that the magnetic refrigeration is a new environment-friendly and energy-saving technology. The magnetic refrigerator is a refrigerator prepared by utilizing the magnetic refrigeration principle. Magnetic refrigeration technology is an emerging refrigeration technology. Magnetic refrigeration is based on the principle of magnetocaloric effect of magnetic materials. The magnetocaloric effect is a property of a magnetic material that causes heat absorption and release of the material due to internal entropy change during magnetization and demagnetization, i.e., when a magnetic field applied to the magnetic material increases, the temperature thereof increases, and when the magnetic field applied to the magnetic material decreases, the temperature thereof decreases, which is an inherent property of the magnetic material, and this property is the largest near the curie point of the material. The magnetic refrigeration realizes the refrigeration purpose through the magnetic heat effect of the magnetic material, and is a new refrigeration technology with environmental protection and energy saving. The magnetic refrigerator is a refrigerator prepared by utilizing the magnetic refrigeration principle.
CN211316637U discloses a heat insulation demagnetization refrigeration system, which comprises a superconducting magnet, and a cold head, a magnetocaloric module, a thermal switch and a heat sink connected in sequence; the magnetocaloric module and the thermal switch are both arranged on the inner side of the superconducting magnet, and the magnetocaloric module and the thermal switch share the superconducting magnet; the thermal switch is a superconducting thermal switch or a reluctance thermal switch component.
CN203659567U discloses a ring-shaped high-temperature superconducting magnet conduction refrigerating device, which conducts and refrigerates through a refrigerator, and solves the problems of low cold conduction efficiency and poor magnet thermal stability of the existing ring-shaped magnet conduction refrigerating structure. The superconducting ring-shaped magnet comprises an upper cold guide disc, a lower cold guide disc, a cold guide rod and N cold guide units, wherein two ends of the cold guide rod are fixedly connected with the upper cold guide disc and the lower cold guide disc respectively; the N cold guide units are arranged in a ring shape and are positioned between the upper cold guide disc and the lower cold guide disc; and an inner side cold guide rod and an outer side cold guide rod are arranged between the upper cold guide disc and the lower cold guide disc in a penetrating manner and are used for conducting heat between the upper cold guide disc and the lower cold guide disc.
The existing magnetic refrigeration system is also a small system of some working media and magnets, and small overall design is not carried out. In actual use, installation and debugging often need to dismantle the whole system for a local small problem, which is time-consuming and labor-consuming. This is very disadvantageous for complex systems and systems that require modification. In addition, the existing design also needs external complex magnetic shielding and thermal radiation shielding, and the probability of system problems is high.
Disclosure of Invention
The invention aims to provide a modularized low-temperature refrigeration system device and a construction method thereof, aiming at the defects in the prior art, the modularized low-temperature refrigeration system device adopts a modularized design mode, adopts a plurality of low-temperature refrigeration modules, each low-temperature refrigeration module provides perfect thermal, electrical and magnetic interfaces externally, the thermal interface, the electrical interface and the magnetic interface of each low-temperature refrigeration module are the same, most parts can be reused, the construction process is simplified, the installation and the debugging can be respectively carried out, and the refrigeration modules can be simply replaced in the later maintenance.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a modular low-temperature refrigeration system device, which comprises a heat sink and at least one low-temperature refrigeration module, wherein the low-temperature refrigeration module comprises a support frame and a refrigeration unit, the refrigeration unit is hung and fixed in the support frame through a suspension device, and the low-temperature refrigeration module is respectively and independently connected with the heat sink through a heat conducting element, so that heat transfer between two adjacent refrigeration units and between the refrigeration unit and the heat sink is realized.
The existing low-temperature refrigeration systems are based on only integrating magnets and magnetic refrigeration working media. The thermal switch is external and needs to be separately installed. Each stage of refrigeration requires separate thermal, electrical, and magnetic connections to be designed for it. The design can not be reused, and the design, installation, debugging and maintenance are complex. There is a small problem that can lead to overall failure. The invention adopts a modularized design mode, adopts a plurality of low-temperature refrigeration modules, each low-temperature refrigeration module provides perfect thermal, electric and magnetic interfaces for the outside, and the thermal interface, the electric interface and the magnetic interface of each low-temperature refrigeration module are the same, most parts can be reused, the construction process is simplified, and the installation and the debugging can be respectively carried out. The later maintenance may also simply replace the refrigeration module. In addition, more importantly, the low-temperature refrigeration system is not limited to the type of the low-temperature refrigeration module, and the low-temperature refrigeration modules with different levels, different purposes and different temperatures can be integrally built in a stacked mode, so that the complex low-temperature refrigeration system is quickly built, the space utilization rate is high, and the installation and debugging are very simple.
As a preferable technical scheme of the invention, the two adjacent low-temperature refrigeration modules are detachably and mechanically fixed through a connecting piece.
Preferably, the connecting pieces are positioned on the side walls of the supporting frame, and two adjacent low-temperature refrigeration modules are fixed side by side through the connecting pieces on the side walls.
Preferably, the low-temperature refrigeration module and the heat sink are detachably mechanically fixed and thermally connected through a support member.
Preferably, the support member is arranged on the top of the low-temperature refrigeration module, and the heat sink is fixed on the top of the refrigeration units arranged side by side.
Each low-temperature refrigeration module adopts a support frame with the same structure, and the section of the whole structure can be in a shape which is convenient for a plurality of modules to be installed, such as a triangle, a diamond, a square or a hexagon. The side surfaces of the supporting frame are provided with a plurality of holes with the same distance, so that the modules can be fixed with each other and the magnetic shielding layer and the heat shielding layer on the side surfaces can be installed. The top surface and the bottom surface of the supporting frame are also provided with a plurality of positioning holes for fixing with the high-temperature end and passing through the thermal and electric connection. The support frame can be made of common materials including aluminum alloy, copper, stainless steel and other copper and iron alloy engineering plastic materials. The support frame has standard mechanical connectors for mechanical attachment to the high temperature heat sink. The same mechanical connecting pieces are arranged among the supporting frames, so that the supporting frames can be conveniently connected with other supporting frames in an expanding way.
Preferably, the outer wall of the supporting frame is provided with a magnetic shielding layer and a thermal shielding layer.
It should be noted that, the arrangement sequence of the magnetic shielding layer and the thermal shielding layer is not specifically required or limited, and the magnetic shielding layer may be wrapped first and then the thermal shielding layer, or the thermal shielding layer may be wrapped first and then the magnetic shielding layer. In addition, the number of wrapping layers of the magnetic shielding layer is not particularly limited, and the magnetic shielding layer can be one layer or multiple layers.
In the invention, after the internal structure of the low-temperature refrigeration module is installed, a plurality of magnetic shielding layers and thermal shielding layers can be installed outside the low-temperature refrigeration module, the thermal shielding layers are used for shielding the thermal radiation of a high-temperature end, and aluminum, gold, silver, copper and the like or aluminum, gold and silver plated composite materials can be adopted, so that the radiation heat exchange is reduced. The magnetic shielding layer shields the magnetic field inside and outside the refrigerator by adopting high magnetic conductivity or superconducting materials so as to prevent electromagnetic interference.
Preferably, the suspension device comprises at least two partition plates horizontally arranged in the support frame, at least two tensioning mechanisms are arranged on the surfaces of the partition plates along the circumferential direction, suspension lines are led out from the tensioning mechanisms, one ends of the suspension lines are fixed on the low-temperature refrigeration module, and the length of the suspension lines is adjusted through the tensioning mechanisms so as to fix the low-temperature refrigeration module between the two partition plates.
In the invention, the refrigerating working medium discharges heat from the low-temperature end to the high-temperature end through the control of the thermal switch in the refrigerating process. Because the low-temperature refrigeration module is suspended, a large temperature difference can be established between the low-temperature refrigeration module and the high-temperature heat sink.
Preferably, the suspension wire is made of Kevlar fiber, polyimide, quartz fiber, nylon, HDPE or carbon fiber.
As a preferable technical solution of the present invention, the refrigeration unit includes a magnetic refrigeration unit or a helium adsorption refrigeration unit.
The refrigeration unit provided by the invention can be a magnetic refrigeration unit or a helium adsorption refrigeration unit, and the working principle of the helium adsorption refrigeration unit is as follows: helium is used as a working medium for helium adsorption refrigeration, helium is condensed into liquid helium at low temperature, and the pressure of the liquid helium is reduced through active carbon in a helium adsorption bed, so that the liquid helium is decompressed and evaporated, and the temperature is rapidly reduced.
Preferably, the magnetic refrigeration unit is divided into a single magnetic refrigeration unit and a continuous magnetic refrigeration unit.
As a preferable technical scheme of the invention, the single magnetic refrigeration unit comprises a low-temperature end, a magnetic refrigeration working medium and a thermal switch which are sequentially connected.
In the invention, the magnetic refrigeration working medium adopts materials with magnetocaloric effect, such as ferric ammonium sulfate, chromium potassium sulfate, lanthanum magnesium cerium nitrate, cesium chromium alum gadolinium gallium oxide, cerium magnesium nitrate, manganese ammonium sulfate or dysprosium gadolinium gallium, and the like. The magnet can be a superconducting magnet or a non-superconducting magnet, and can form a strong magnetic field. The refrigeration effect is formed by eliminating the magnetization heat and the demagnetization process through the isothermal magnetization process.
Preferably, a group of annular superconducting magnets are arranged on the periphery of the magnetic refrigeration working medium.
Preferably, the thermal switch is connected to the heat sink via a thermally conductive element.
Preferably, the continuous magnetic refrigeration unit comprises a first thermal switch, a first magnetic refrigeration working medium, a low-temperature end, a second magnetic refrigeration working medium and a second thermal switch which are connected in sequence.
Preferably, a group of annular superconducting magnets are respectively arranged on the peripheries of the first magnetic refrigeration working medium and the second magnetic refrigeration working medium.
Preferably, the first thermal switch and the second thermal switch are both connected to the heat sink through the same heat conducting element.
Preferably, the helium adsorption refrigeration unit comprises a low-temperature end, a low-temperature heat sink, a helium adsorption bed and a thermal switch which are connected in sequence.
The magnetic refrigeration working medium needs a thermal switch to control the on and off of heat when working, and in the invention, the thermal switch can be a gas thermal switch, a mechanical thermal switch, a magnetic resistance thermal switch, a superconducting thermal switch and the like. When the magnetic refrigeration working medium works, the superconducting magnet magnetizes the refrigeration working medium, the thermal switch is closed to transfer the magnetized heat to the heat sink, then the thermal switch is disconnected to demagnetize in a heat insulation environment, so that the temperature of the low-temperature end is reduced to obtain low temperature.
When the thermal switch adopts a superconducting thermal switch, the magnetic refrigeration working medium and the superconducting thermal switch share the superconducting magnet, or different superconducting magnets can be respectively adopted, and the superconducting thermal switch passively switches between a normal state and a superconducting state along with the excitation and demagnetization processes of the magnetocaloric material of the magnetic refrigeration working medium, so that the thermal switch is automatically switched on and off. In addition, the magnetic refrigeration working medium and the superconducting thermal switch share the superconducting magnet, so that the number of the required superconducting magnets is effectively reduced, the redundancy degree of the system is reduced, the quality of the system is reduced, and the compactness degree is higher. In addition, the magnetic refrigeration working medium and the superconducting thermal switch share the superconducting magnet, so that mutual magnetic field interference cannot be generated because the magnetic refrigeration working medium and the superconducting thermal switch respectively use different superconducting magnets. Meanwhile, the superconducting thermal switch can automatically switch states along with the change of the magnetic field of the magnetic refrigeration working medium, does not need an additional control system, and is more convenient and reliable.
The principle of the reluctance thermal switch is similar to that of the superconducting thermal switch, and the difference is that the reluctance thermal switch is in an off state of low thermal conductivity when a magnetic field is applied, and is in an on state of high thermal conductivity when no magnetic field is applied. Therefore, when the magneto-resistive thermal switch is built in, a natural magnetic field opposite to the superconducting magnetic field of the superconducting magnet needs to be applied, and when the superconducting magnet is excited, the natural magnetic field is counteracted, so that the magneto-resistive thermal switch is in a conducting state. When the superconducting magnet is demagnetized, the magnetic resistance thermal switch is in an off state under the action of the inherent magnetic field, and the thermal insulation process of the magnetic refrigeration working medium is matched.
As a preferred technical solution of the present invention, the cryogenic refrigeration system apparatus includes at least two single magnetic refrigeration units arranged side by side, and a low temperature end of the single magnetic refrigeration unit is flexibly connected to a thermal switch of an adjacent single magnetic refrigeration unit, thereby forming a multistage single refrigeration system apparatus.
When a plurality of single magnetic refrigeration units are connected, the low-temperature end of one single magnetic refrigeration unit is flexibly connected with the thermal switch of the single magnetic refrigeration unit by adopting an interstage, so that a larger temperature difference is obtained, and even a temperature close to absolute zero is obtained.
As a preferred technical solution of the present invention, the low-temperature refrigeration system device includes at least two continuous magnetic refrigeration units arranged side by side, and a low-temperature end of the continuous magnetic refrigeration unit is connected to a low-temperature end of an adjacent continuous magnetic refrigeration unit to form a multi-stage continuous refrigeration system device.
When a plurality of continuous magnetic refrigeration units are combined and built, the thermal switches of the continuous magnetic refrigeration units and the thermal switches of the adjacent continuous magnetic refrigeration units are flexibly connected in an interstage mode, and the thermal switches are controlled to be switched on and off, so that the different continuous magnetic refrigeration units can work alternately, and continuous low-temperature refrigeration is realized.
As a preferred technical solution of the present invention, the cryogenic refrigeration system apparatus includes at least one continuous magnetic refrigeration unit and at least one single magnetic refrigeration unit that are arranged side by side in an alternating manner, and a low-temperature end of the continuous magnetic refrigeration unit is flexibly connected to a thermal switch of an adjacent single magnetic refrigeration unit to form a single-stage continuous refrigeration system apparatus.
As a preferred technical scheme of the present invention, the cryogenic refrigeration system device includes at least one helium adsorption refrigeration unit and at least one single magnetic refrigeration unit arranged side by side, and a low-temperature end of the helium adsorption refrigeration unit is flexibly connected to a thermal switch of an adjacent single magnetic refrigeration unit to form a helium adsorption magnetic refrigeration composite refrigeration system device.
In a second aspect, the present invention provides a method for building a cryogenic refrigeration system apparatus according to the first aspect, including:
the refrigeration unit is suspended in the supporting frame, the low-temperature refrigeration modules are respectively connected into the heat sinks, and the heat sinks are cooled and refrigerated through the low-temperature refrigeration modules.
As a preferred technical solution of the present invention, the following four connection modes exist between the low-temperature refrigeration modules:
the first method is as follows: when at least two single magnetic refrigeration units are adopted for modularized integrated construction, the low-temperature end of each single magnetic refrigeration unit is flexibly connected to the thermal switch of the adjacent single magnetic refrigeration unit;
the second method comprises the following steps: when at least two continuous magnetic refrigeration units are adopted for modularized integrated construction, the low-temperature end of each continuous magnetic refrigeration unit is connected to the low-temperature end of the adjacent continuous magnetic refrigeration unit;
the third method comprises the following steps: the method comprises the following steps that at least one continuous magnetic refrigeration unit and at least one single magnetic refrigeration unit are adopted, the continuous magnetic refrigeration unit and the single magnetic refrigeration unit are alternately arranged, and the low-temperature end of the continuous magnetic refrigeration unit is flexibly connected to a thermal switch of the adjacent single magnetic refrigeration unit;
the method is as follows: the helium adsorption refrigeration unit and the single magnetic refrigeration unit are alternately arranged, and the low-temperature end of the helium adsorption refrigeration unit is flexibly connected to a thermal switch of the adjacent single magnetic refrigeration unit.
As described above, the main invention of the present invention lies in that the modular construction of the existing low-temperature refrigeration unit is realized, and the refrigeration mode and the internal structure of the low-temperature refrigeration unit are not specifically required or limited, so it can be understood that both the low-temperature refrigeration unit disclosed in the prior art and the low-temperature refrigeration module not disclosed in the new technology can adopt the technical scheme provided by the present invention to realize the modular construction, but because the low-temperature refrigeration units existing in the market are various in kind and different in structure, the present invention cannot exhaustively describe the construction modes between all types of low-temperature refrigeration units, and only the following four construction modes are taken as examples to describe in detail the construction modes between the low-temperature refrigeration units:
the first method is as follows: the modular integrated arrangement is carried out by adopting a plurality of identical single magnetic refrigeration units, each single magnetic refrigeration unit is fixed side by side, the low-temperature end of each single magnetic refrigeration unit is flexibly connected with the thermal switch of the adjacent single magnetic refrigeration unit, and the like, so that a multistage single refrigeration system device is formed; under the modularized building mode, each single magnetic refrigeration unit is equivalently connected in series, so that lower refrigeration temperature can be obtained;
the second method comprises the following steps: the method comprises the following steps of performing modularized integrated arrangement by adopting a plurality of identical continuous magnetic refrigeration units, fixing the continuous magnetic refrigeration units side by side, connecting the low-temperature ends of the continuous magnetic refrigeration units with the low-temperature ends of the adjacent continuous magnetic refrigeration units, and so on to form a multistage continuous refrigeration system device; under the modularized building mode, different refrigeration units can work alternately by controlling the on and off of the thermal switch, so that continuous low-temperature refrigeration is realized;
the third method comprises the following steps: the single magnetic refrigeration units and the continuous magnetic refrigeration units are arranged in a modularized integrated manner, the single magnetic refrigeration units and the continuous magnetic refrigeration units are alternately fixed side by side, the low-temperature ends of the continuous magnetic refrigeration units are flexibly connected with the thermal switches of the adjacent single magnetic refrigeration units, and the like, so that a single-stage continuous refrigeration system device is formed; under the modularized construction mode, the refrigerating capacity can be continuously output at a plurality of set temperatures, so that the refrigerating system can continuously work; more importantly, the design working point can be easily changed after the cascade connection is formed by the method, so that the whole system is easy to change and convenient for users to use;
the method is as follows: the helium adsorption refrigeration system device is characterized in that a plurality of helium adsorption refrigeration units and single magnetic refrigeration units are adopted to carry out modularized integrated arrangement, the helium adsorption refrigeration units and the single magnetic refrigeration units are alternately fixed side by side, the low-temperature ends of the helium adsorption refrigeration units are flexibly connected with thermal switches of adjacent single magnetic refrigeration units, and the like, so that a helium adsorption magnetic refrigeration composite refrigeration system device is formed; in this modular construction, this design makes it easier to achieve lower temperatures and maintain longer cooling times under the heat shield of the preceding stage. The copper wire preceding stage also can be the output refrigeration capacity, and convenience of customers is in the test experiment work of different temperatures.
The system refers to an equipment system, or a production equipment.
Compared with the prior art, the invention has the beneficial effects that:
the existing low-temperature refrigeration systems are based on the integration of only magnets and magnetic refrigeration working media. The thermal switch is external and needs to be separately installed. Each stage of refrigeration requires separate thermal, electrical, and magnetic connections to be designed for it. The design can not be reused, and the design, installation, debugging and maintenance are complex. There is a small problem that can lead to overall failure. The invention adopts a modularized design mode, adopts a plurality of low-temperature refrigeration modules, each low-temperature refrigeration module provides perfect thermal, electric and magnetic interfaces, the thermal interface, the electric interface and the magnetic interface of each low-temperature refrigeration module are the same, most parts can be reused, the building process is simplified, and the installation and the debugging can be respectively carried out. The refrigeration module can also be simply replaced for later maintenance. In addition, more importantly, the invention has no limit on the types of the low-temperature refrigeration modules, and can integrate and build the low-temperature refrigeration modules with different levels, different purposes and different temperatures in a stacking manner, thereby quickly building a complex low-temperature refrigeration system, and having high space utilization rate and very simple installation and debugging.
Drawings
FIG. 1 is a schematic diagram of a single-pass magnetic refrigeration unit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a continuous magnetic refrigeration unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a helium sorption refrigeration unit according to one embodiment of the present invention;
FIG. 4 is a first construction structure diagram provided by a specific embodiment of the present invention;
FIG. 5 is a construction structure diagram of a second mode provided by a specific embodiment of the present invention;
FIG. 6 is a construction structure diagram of a third mode provided by a specific embodiment of the present invention;
FIG. 7 is a construction structure diagram of a fourth mode provided by a specific embodiment of the present invention;
wherein, 1-a support frame; 2-a magnetic shielding layer; 3-a thermal barrier layer; 4-thermal switching; 5-magnetic refrigeration working medium; 6-low temperature end; 7-a suspension device; 8-a superconducting magnet; 9-a heat conducting element; 10-a support; 11-a connector; 12-a first thermal switch; 13-a first magnetic refrigerant; 14-a second magnetic refrigerant; 15-a second thermal switch; 16-low temperature heat sink; 17-a helium adsorption bed; 18-a heat sink; 19-single magnetic refrigeration unit; 20-a continuous magnetic refrigeration unit; 21-helium sorption refrigeration unit.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood by those skilled in the art that the present invention necessarily includes the necessary piping, conventional valves and general pumping equipment for achieving the process integrity, but the above contents do not belong to the main inventive point of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not specifically limited thereto.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In a specific embodiment, the present invention provides a modular cryogenic refrigeration system apparatus, as shown in fig. 4, fig. 5, fig. 6 and fig. 7, the cryogenic refrigeration system apparatus includes a heat sink 18 and at least one cryogenic refrigeration module, the cryogenic refrigeration module includes a support frame 1 and a refrigeration unit, the refrigeration unit is fixed in the support frame 1 by hanging through a suspension device 7, and the cryogenic refrigeration module is respectively and independently connected to the heat sink 18 through a heat conducting element 9, so as to achieve heat transfer between two adjacent refrigeration units and between the refrigeration unit and the heat sink 18.
The existing low-temperature refrigeration systems are based on only integrating magnets and magnetic refrigeration working media 5. The thermal switch 4 is external and needs to be separately installed. Each stage of refrigeration requires separate thermal, electrical, and magnetic connections to be designed for it. The design can not be reused, and the design, installation, debugging and maintenance are complex. There is a small problem that can lead to overall failure. The invention adopts a modularized design mode, adopts a plurality of low-temperature refrigeration modules, each low-temperature refrigeration module provides perfect thermal, electric and magnetic interfaces, the thermal interface, the electric interface and the magnetic interface of each low-temperature refrigeration module are the same, most parts can be reused, the building process is simplified, and the installation and the debugging can be respectively carried out. The refrigeration module can be simply replaced for later maintenance very easily. In addition, more importantly, the invention has no limit on the types of the low-temperature refrigeration modules, and can integrate and build the low-temperature refrigeration modules with different levels, different purposes and different temperatures in a stacking manner, thereby quickly building a complex low-temperature refrigeration system, and having high space utilization rate and very simple installation and debugging.
Furthermore, the two adjacent low-temperature refrigeration modules are detachably and mechanically fixed through a connecting piece 11.
Further, the connecting pieces 11 are located on the side walls of the supporting frame 1, and two adjacent low-temperature refrigeration modules are fixed side by side through the connecting pieces 11 on the side walls.
Furthermore, the low-temperature refrigeration module and the heat sink 18 are detachably mechanically fixed and thermally connected through the support 10.
Furthermore, the support member 10 is disposed on the top of the low temperature refrigeration module, and the heat sink 18 is fixed on the top of the refrigeration units disposed side by side.
Each low-temperature refrigeration module adopts the supporting frame 1 with the same structure, and the section of the whole structure can be in a shape which is convenient for a plurality of modules to be installed, such as a triangle, a diamond, a square or a hexagon. The side of the supporting frame 1 is provided with a plurality of holes with the same distance for fixing the modules to each other and installing the magnetic shield layer 2 and the thermal shield layer 3 on the side. The top surface and the bottom surface of the supporting frame 1 are also provided with a plurality of positioning holes for fixing with the high-temperature end and passing through the thermal and electric connection. The supporting frame 1 can be made of common materials including aluminum alloy, copper, stainless steel and other copper and iron alloy engineering plastic materials. The support frame 1 has standard mechanical connections 11 for mechanical attachment to the high temperature heat sink 18. The same mechanical connectors 11 are arranged between the supporting frames 1, so that the expanding connection with other supporting frames 1 is facilitated.
Further, the outer wall of the supporting frame 1 is provided with a magnetic shielding layer 2 and a thermal shielding layer 3.
It should be noted that the order of arranging the magnetic shield layer 2 and the thermal shield layer 3 is not particularly limited, and the magnetic shield layer 2 may be wrapped first and then the thermal shield layer 3 may be wrapped first, or the thermal shield layer 3 may be wrapped first and then the magnetic shield layer 2 may be wrapped. In addition, the number of the wrapping layers of the magnetic shield layer 2 is not particularly limited, and may be one layer or a plurality of layers.
In the invention, after the internal structure of the low-temperature refrigeration module is installed, a plurality of magnetic shielding layers 2 and heat shielding layers 3 can be installed outside the low-temperature refrigeration module, the heat shielding layers 3 are used for shielding heat radiation of a high-temperature end, and aluminum, gold, silver, copper and the like or aluminum, gold and silver plated composite materials can be adopted, so that radiation heat exchange is reduced. The magnetic shielding layer 2 adopts high magnetic conductivity or superconducting materials to shield the magnetic fields inside and outside the refrigerator, so as to prevent electromagnetic interference.
Further, the suspension device 7 comprises at least two partition plates horizontally arranged in the support frame 1, at least two tensioning mechanisms are arranged on the surfaces of the partition plates along the circumferential direction, suspension lines are led out of the tensioning mechanisms, one ends of the suspension lines are fixed on the low-temperature refrigeration module, and the length of the suspension lines is adjusted through the tensioning mechanisms so as to fix the low-temperature refrigeration module between the two partition plates.
In the invention, the refrigerating medium discharges heat from the low-temperature end 6 to the high-temperature end through the control of the thermal switch 4 in the refrigerating process. Due to the suspension of the low temperature refrigeration module, a large temperature difference can be created between the low temperature refrigeration module and the high temperature heat sink 18.
Furthermore, the suspension wire is made of Kevlar fiber, polyimide, quartz fiber, nylon, HDPE or carbon fiber.
Further, the refrigerating unit includes a magnetic refrigerating unit or a helium adsorption refrigerating unit 21.
The refrigeration unit provided by the invention can be a magnetic refrigeration unit or a helium adsorption refrigeration unit 21, and the working principle of the helium adsorption refrigeration unit 21 is as follows: helium is used as a working medium for helium adsorption refrigeration, helium is condensed into liquid helium at low temperature, and the pressure of the liquid helium is reduced through active carbon in the helium adsorption bed 17, so that the liquid helium is decompressed and evaporated, and the temperature is rapidly reduced.
Further, the magnetic refrigerating unit is divided into a single magnetic refrigerating unit 19 and a continuous magnetic refrigerating unit 20.
Further, as shown in fig. 1, the single magnetic refrigeration unit 19 includes a low temperature end 6, a magnetic refrigeration working medium 5, and a thermal switch 4, which are connected in sequence, a group of annular superconducting magnets 8 is disposed on the periphery of the magnetic refrigeration working medium 5, and the thermal switch 4 is connected to the heat sink 18 through a heat conducting element 9.
In the invention, the magnetic refrigeration working medium 5 is made of materials with magnetocaloric effect, such as ferric ammonium sulfate, chromium potassium sulfate, cerium magnesium lanthanum nitrate, chromium cesium alum gadolinium gallium oxide, cerium magnesium nitrate, manganese ammonium sulfate or dysprosium gadolinium gallium, and the like. The magnet can adopt a superconducting magnet 8 or a non-superconducting magnet 8, and can form a strong magnetic field. The refrigeration effect is formed by removing the magnetization heat and the demagnetization process through the isothermal magnetization process.
Further, as shown in fig. 2, the continuous magnetic refrigeration unit 20 includes a first thermal switch 12, a first magnetic refrigeration working medium 13, a low temperature end 6, a second magnetic refrigeration working medium 14, and a second thermal switch 15, which are connected in sequence, a group of annular superconducting magnets 8 are respectively disposed on the peripheries of the first magnetic refrigeration working medium 13 and the second magnetic refrigeration working medium 14, and the first thermal switch 12 and the second thermal switch 15 are both connected to the heat sink 18 through the same heat conducting element 9.
Further, as shown in fig. 3, the helium adsorption refrigeration unit 21 includes a low-temperature end 6, a low-temperature heat sink 16, a helium adsorption bed 17 and a thermal switch 4 which are connected in sequence.
The magnetic refrigeration working medium 5 needs the thermal switch 4 to control the on and off of heat when working, and in the invention, the thermal switch 4 can be a gas thermal switch 4, a mechanical thermal switch 4, a magnetic resistance thermal switch 4, a super heat conduction switch 4 and the like. When the magnetic refrigeration working medium 5 works, the superconducting magnet 8 magnetizes the refrigeration working medium, the thermal switch 4 is closed, the magnetized heat is transferred to the heat sink 18, then the thermal switch 4 is disconnected, demagnetization is carried out in a heat insulation environment, and the temperature of the low-temperature end 6 is reduced to obtain low temperature.
When the thermal switch 4 adopts the superconducting thermal switch 4, the magnetic refrigeration working medium 5 and the superconducting thermal switch 4 share the superconducting magnet 8, or different superconducting magnets 8 can be respectively adopted, and the superconducting thermal switch 4 is passively switched between a normal state and a superconducting state along with the excitation and demagnetization processes of the magnetocaloric material of the magnetic refrigeration working medium 5, so that the thermal switch 4 is automatically switched on and off. In addition, the magnetic refrigeration working medium 5 and the superconducting thermal switch 4 share the superconducting magnet 8, so that the number of required superconducting magnets 8 is effectively reduced, the system redundancy degree is reduced, the system quality is reduced, and the compactness degree is higher. In addition, the magnetic refrigeration working medium 5 and the superconducting thermal switch 4 share the superconducting magnet 8, and mutual magnetic field interference cannot be generated because the magnetic refrigeration working medium 5 and the superconducting thermal switch 4 respectively use different superconducting magnets 8. Meanwhile, the superconducting thermal switch 4 can automatically switch states along with the change of the magnetic field of the magnetic refrigeration working medium 5, an additional control system is not needed, and the operation is more convenient and reliable.
The principle of the reluctance thermal switch 4 is similar to that of the superconducting thermal switch 4, except that the reluctance thermal switch 4 is in an off state of low thermal conductivity when a magnetic field is applied and in an on state of high thermal conductivity when no magnetic field is applied. Therefore, when the magneto-resistive thermal switch 4 is built in, a natural magnetic field in the opposite direction to the superconducting magnetic field of the superconducting magnet 8 needs to be applied, and when the superconducting magnet 8 is excited, the natural magnetic field is cancelled, so that the magneto-resistive thermal switch 4 is in a conducting state. When the superconducting magnet 8 is demagnetized, the reluctance thermal switch 4 is in an off state under the action of the inherent magnetic field, and is matched with the heat insulation process of the magnetic refrigeration working medium 5.
Further, the low-temperature refrigeration system device comprises at least two single magnetic refrigeration units 19 arranged side by side, and the low-temperature end 6 of each single magnetic refrigeration unit 19 is flexibly connected with the thermal switch 4 of the adjacent single magnetic refrigeration unit 19, so that a multi-stage single refrigeration system device is formed.
When a plurality of single magnetic refrigeration units 19 are connected, the low-temperature end 6 of one single magnetic refrigeration unit 19 is flexibly connected with the thermal switch 4 of the single magnetic refrigeration unit 19 in an interstage way, so that larger temperature difference is obtained, and even the temperature close to absolute zero is obtained.
Further, the low-temperature refrigeration system device comprises at least two continuous magnetic refrigeration units 20 arranged side by side, and the low-temperature end 6 of each continuous magnetic refrigeration unit 20 is connected with the low-temperature end 6 of the adjacent continuous magnetic refrigeration unit 20 to form a multistage continuous refrigeration system device.
When a plurality of continuous magnetic refrigeration units 20 are combined and built, the thermal switches 4 of the continuous magnetic refrigeration units 20 are flexibly connected with the thermal switches 4 of the adjacent continuous magnetic refrigeration units 20 in an interstage mode, and the thermal switches 4 are controlled to be opened and closed, so that the different continuous magnetic refrigeration units 20 can work alternately, and continuous low-temperature refrigeration is realized.
Further, the low-temperature refrigeration system device comprises at least one continuous magnetic refrigeration unit 20 and at least one single magnetic refrigeration unit 19 which are arranged side by side in an alternating mode, and the low-temperature end 6 of each continuous magnetic refrigeration unit 20 is flexibly connected with the thermal switch 4 of the adjacent single magnetic refrigeration unit 19 to form a single-stage continuous refrigeration system device.
Further, the low-temperature refrigeration system device comprises at least one helium adsorption refrigeration unit 21 and at least one single magnetic refrigeration unit 19 which are arranged side by side, and the low-temperature end 6 of the helium adsorption refrigeration unit 21 is flexibly connected with the thermal switch 4 of the adjacent single magnetic refrigeration unit 19 to form the helium adsorption magnetic refrigeration composite refrigeration system device.
In another specific embodiment, the invention provides a building method of the above-mentioned cryogenic refrigeration system device, as shown in fig. 4 to 7, the building method includes the following four steps:
the method I comprises the following steps: as shown in fig. 4, when at least two single magnetic refrigeration units 19 are adopted for modularized integrated construction, the low-temperature end 6 of the single magnetic refrigeration unit 19 is flexibly connected to the thermal switch 4 of the adjacent single magnetic refrigeration unit 19;
the second method comprises the following steps: as shown in fig. 5, when at least two continuous magnetic refrigeration units 20 are adopted for modularized integrated construction, the low-temperature end 6 of a continuous magnetic refrigeration unit 20 is connected to the low-temperature end 6 of an adjacent continuous magnetic refrigeration unit 20;
the third method comprises the following steps: as shown in fig. 6, at least one continuous magnetic refrigeration unit 20 and at least one single magnetic refrigeration unit 19 are adopted, the continuous magnetic refrigeration unit 20 and the single magnetic refrigeration unit 19 are alternately arranged, and the low-temperature end 6 of the continuous magnetic refrigeration unit 20 is flexibly connected to the thermal switch 4 of the adjacent single magnetic refrigeration unit 19;
the method is as follows: as shown in fig. 7, at least one helium adsorption refrigeration unit 21 and at least one single magnetic refrigeration unit 19 are adopted, the helium adsorption refrigeration unit 21 and the single magnetic refrigeration unit 19 are alternately arranged, and the low-temperature end 6 of the helium adsorption refrigeration unit 21 is flexibly connected to the thermal switch 4 of the adjacent single magnetic refrigeration unit 19.
As described above, the main point of the present invention is to implement a modular construction for an existing low-temperature refrigeration unit, and no specific requirements and no specific limitations are imposed on the refrigeration mode and the internal structure of the low-temperature refrigeration unit, so it can be understood that both the low-temperature refrigeration unit disclosed in the prior art and the low-temperature refrigeration module not disclosed in the new technology can be implemented by the technical solution provided by the present invention to implement the modular construction, but because the low-temperature refrigeration units existing in the market are various in types and different in structure, the present invention cannot exhaustively describe the construction modes between all types of low-temperature refrigeration units, and only the following four construction modes are taken as examples to describe in detail the construction modes between the low-temperature refrigeration units:
the first method is as follows: a plurality of identical single magnetic refrigeration units 19 are adopted for modularized integrated arrangement, each single magnetic refrigeration unit 19 is fixed side by side, the low-temperature end 6 of each single magnetic refrigeration unit 19 is flexibly connected with the thermal switch 4 of the adjacent single magnetic refrigeration unit 19, and the like, so that a multistage single refrigeration system device is formed; under the modularized building mode, each single magnetic refrigeration unit 19 is equivalently connected in series, so that lower refrigeration temperature can be obtained;
the second method comprises the following steps: a plurality of identical continuous magnetic refrigeration units 20 are adopted for modularized integrated arrangement, each continuous magnetic refrigeration unit 20 is fixed side by side, the low-temperature end 6 of each continuous magnetic refrigeration unit 20 is connected with the low-temperature end 6 of the adjacent continuous magnetic refrigeration unit 20, and the rest is done in the same way, so that a multistage continuous refrigeration system device is formed; under the modularized building mode, different refrigeration units can work alternately by controlling the on and off of the thermal switch 4, so that continuous low-temperature refrigeration is realized;
the third method comprises the following steps: a plurality of single magnetic refrigeration units 19 and continuous magnetic refrigeration units 20 are adopted for modularized integrated arrangement, the single magnetic refrigeration units 19 and the continuous magnetic refrigeration units 20 are alternately fixed side by side, the low-temperature end 6 of each continuous magnetic refrigeration unit 20 is flexibly connected with the thermal switch 4 of the adjacent single magnetic refrigeration unit 19, and the like, so that a single-stage continuous refrigeration system device is formed; under the modularized construction mode, the refrigerating capacity can be continuously output at a plurality of set temperatures, so that the refrigerating system can continuously work; more importantly, the design working point can be easily changed after the cascade connection is formed by the method, so that the whole system is easy to change and convenient for users to use;
the method four comprises the following steps: the helium adsorption refrigeration unit 21 and the single magnetic refrigeration unit 19 are arranged in a modularized integrated manner, the helium adsorption refrigeration unit 21 and the single magnetic refrigeration unit 19 are alternately fixed side by side, the low-temperature end 6 of the helium adsorption refrigeration unit 21 is flexibly connected with the thermal switch 4 of the adjacent single magnetic refrigeration unit 19, and the like, so that a helium adsorption magnetic refrigeration composite refrigeration system device is formed; in this modular construction, this design makes it easier to achieve lower temperatures and maintain longer cooling times under the heat shield of the preceding stage. The copper wire preceding stage also can be the output refrigeration capacity, and convenience of customers is in the test experiment work of different temperature degrees.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. A modular low-temperature refrigeration system device is characterized by comprising a heat sink and at least one low-temperature refrigeration module, wherein the low-temperature refrigeration module comprises a supporting frame and a refrigeration unit, the refrigeration unit is fixedly hung in the supporting frame through a hanging device, and the low-temperature refrigeration module is respectively and independently connected with the heat sink through a heat conducting element, so that heat transfer between two adjacent refrigeration units and between the refrigeration unit and the heat sink is realized;
the suspension device comprises at least two partition plates horizontally arranged in a support frame, at least two tensioning mechanisms are arranged on the surfaces of the partition plates along the circumferential direction, suspension lines are led out from the tensioning mechanisms, one ends of the suspension lines are fixed on the low-temperature refrigeration module, and the length of the suspension lines is adjusted through the tensioning mechanisms so as to fix the low-temperature refrigeration module between the two annular partition plates;
the refrigerating unit comprises a magnetic refrigerating unit or a helium adsorption refrigerating unit, and the magnetic refrigerating unit is divided into a single magnetic refrigerating unit and a continuous magnetic refrigerating unit;
the single magnetic refrigeration unit comprises a low-temperature end, a magnetic refrigeration working medium and a thermal switch which are sequentially connected, wherein a group of annular superconducting magnets are arranged on the periphery of the magnetic refrigeration working medium, and the thermal switch is connected with the heat sink through a heat conduction element;
the continuous magnetic refrigeration unit comprises a first thermal switch, a first magnetic refrigeration working medium, a low-temperature end, a second magnetic refrigeration working medium and a second thermal switch which are sequentially connected, a group of annular superconducting magnets are respectively arranged on the peripheries of the first magnetic refrigeration working medium and the second magnetic refrigeration working medium, and the first thermal switch and the second thermal switch are both connected with the heat sink through the same heat conduction element;
the helium adsorption refrigeration unit comprises a low-temperature end, a low-temperature heat sink, a helium adsorption bed and a thermal switch which are sequentially connected, detachable mechanical fixation is realized between two adjacent low-temperature refrigeration modules through a connecting piece, the connecting piece is positioned at the side wall of the supporting frame, the two adjacent low-temperature refrigeration modules are fixed side by side through the connecting piece at the side wall, and the detachable mechanical fixation and thermal connection are realized between the low-temperature refrigeration modules and the heat sink through a supporting piece.
2. A cryogenic refrigeration system device according to claim 1, wherein the support is provided on top of the cryogenic refrigeration module and the heat sink is secured to the top of the side-by-side refrigeration units.
3. A cryogenic refrigeration system device according to claim 1, wherein the outer wall of the support frame is provided with a magnetic shield and a thermal shield.
4. The device of claim 1, wherein the suspension wires are made of Kevlar, polyimide, quartz, nylon, HDPE, or carbon fiber.
5. The cryogenic refrigeration system device of claim 1, wherein the cryogenic refrigeration system device comprises at least two side-by-side single magnetic refrigeration units, and the low temperature end of each single magnetic refrigeration unit is flexibly connected with the thermal switch of the adjacent single magnetic refrigeration unit, thereby forming a multistage single refrigeration system device.
6. The cryogenic refrigeration system device of claim 1, comprising at least two consecutive magnetic refrigeration units arranged side by side, wherein the low temperature end of the consecutive magnetic refrigeration unit is connected to the low temperature end of an adjacent consecutive magnetic refrigeration unit to form a multi-stage consecutive refrigeration system device.
7. The cryogenic refrigeration system device of claim 1, wherein the cryogenic refrigeration system device comprises at least one continuous magnetic refrigeration unit and at least one single magnetic refrigeration unit which are arranged side by side in an alternating manner, and the low temperature end of the continuous magnetic refrigeration unit is flexibly connected with a thermal switch of the adjacent single magnetic refrigeration unit to form a single-stage continuous refrigeration system device.
8. A cryogenic refrigeration system device according to claim 1, wherein the cryogenic refrigeration system device comprises at least one helium adsorption refrigeration unit and at least one single magnetic refrigeration unit arranged side by side, and the low temperature end of the helium adsorption refrigeration unit is flexibly connected with a thermal switch of an adjacent single magnetic refrigeration unit to form the helium adsorption magnetic refrigeration composite refrigeration system device.
9. A method of building a cryogenic refrigeration system device according to any one of claims 1 to 8, the method comprising:
the refrigeration unit is suspended in the supporting frame, the low-temperature refrigeration modules are respectively connected into the heat sinks, and the heat sinks are cooled and refrigerated through the low-temperature refrigeration modules.
10. The building method according to claim 9, characterized in that the following four connection modes exist between the low-temperature refrigeration modules:
the first method is as follows: when at least two single magnetic refrigeration units are adopted for modularized integrated construction, the low-temperature end of each single magnetic refrigeration unit is flexibly connected to the thermal switch of the adjacent single magnetic refrigeration unit;
the second method comprises the following steps: when at least two continuous magnetic refrigeration units are adopted for modularized integrated construction, the low-temperature end of each continuous magnetic refrigeration unit is connected to the low-temperature end of the adjacent continuous magnetic refrigeration unit;
the third method comprises the following steps: the method comprises the following steps that at least one continuous magnetic refrigeration unit and at least one single magnetic refrigeration unit are adopted, the continuous magnetic refrigeration unit and the single magnetic refrigeration unit are alternately arranged, and the low-temperature end of the continuous magnetic refrigeration unit is flexibly connected to a thermal switch of the adjacent single magnetic refrigeration unit;
the method is as follows: the helium adsorption refrigeration unit and the single magnetic refrigeration unit are alternately arranged, and the low-temperature end of the helium adsorption refrigeration unit is flexibly connected to a thermal switch of the adjacent single magnetic refrigeration unit.
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| CN115481743A (en) * | 2022-03-18 | 2022-12-16 | 合肥本源量子计算科技有限责任公司 | Quantum signal processing device integrated device for dilution refrigerator |
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| CN211316637U (en) * | 2019-11-22 | 2020-08-21 | 中国科学院理化技术研究所 | Adiabatic demagnetization refrigerating system |
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