Superconducting magnet device

Abstract

The utility model provides a superconducting magnet device. The superconducting magnet device is provided with a magnet device main body with a superconducting magnet, a magnet supporting part, a refrigerating machine, a refrigerating machine supporting part and a connecting component, the magnet support portion supports the magnet device main body such that the magnet device main body is disposed above the installation surface. The refrigerator support portion supports the refrigerator from below such that the refrigerator is disposed above the installation surface. The connection member connects the refrigerator support part and the magnet support part at a position above the installation surface. Accordingly, vibration affecting measurement in the magnet device body can be suppressed.

Description

Technical Field

[0001] The utility model relates to a superconducting magnet device with a refrigerator. Background Art

[0002] For example, Japanese Patent Publication No. 2007-051850 describes a conventional superconducting magnet device, which includes a magnet device body (NMR in this document) for measuring a sample and a refrigerator for cooling a refrigerant (helium and nitrogen in this document) for cooling a superconducting magnet.

[0003] If the refrigerator vibrates as described above, the vibration is transmitted to the magnet device main body, and may affect the measurement in the magnet device main body. Utility Model Content

[0004] An object of the present invention is to provide a superconducting magnet device capable of suppressing vibration that affects measurement in a magnet device main body.

[0005] A superconducting magnet device comprises a magnet device body, a magnet support part, a refrigerator, a refrigerator support part and at least one connecting member. The magnet device body has a superconducting magnet. The magnet support part supports the magnet device body in a manner that the magnet device body is arranged above a setting surface. The refrigerator is arranged at a position separated from the magnet device body and cools the refrigerant that cools the superconducting magnet. The refrigerator support part supports the refrigerator from below in a manner that the refrigerator is arranged above the setting surface. The connecting member connects the refrigerator support part and the magnet support part at a position above the setting surface.

[0006] According to the present invention, it is possible to suppress vibration that affects measurement in the magnet device main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a side cross-sectional view of a superconducting magnet device according to one embodiment of the present invention.

[0008] Figure 2 Is configured with Figure 1 Side cross-sectional views of a superconducting magnet apparatus showing magnet support parts in different positions. DETAILED DESCRIPTION

[0009] Below, refer to Figure 1 to Figure 2 A superconducting magnet device 1 according to an embodiment of the present invention will be described. Figure 1 It is a side cross-sectional view of superconducting magnet device 1 according to the present embodiment. Figure 2 Is configured with Figure 1The side cross-sectional view of the superconducting magnet device 1 with the magnet support part at different positions of the magnet support part is shown. Figure 1 , Figure 2 In FIG. 1 , the interior of a magnet device main body 10 to be described later is shown in cross section.

[0010] like Figure 1 As shown, the superconducting magnet device 1 has a superconducting magnet 13. The superconducting magnet device 1 is a device (NMR device) for measuring (NMR measurement) a sample S using nuclear magnetic resonance (NMR). The superconducting magnet device 1 has a magnet device body 10, a magnet support part 20, a refrigerant evaporation suppression device 30, a refrigerator support part 40, and a connecting member 50.

[0011] The magnet device main body 10 is a main body portion of the superconducting magnet device 1. The magnet device main body 10 has a cryostat 11 and a superconducting magnet 13.

[0012] The cryostat 11 is a container for setting the superconducting magnet 13 to a low temperature state. The cryostat 11 accommodates the superconducting magnet 13 and keeps the superconducting magnet 13 cold. Here, the vertical direction or the substantially vertical direction is defined as the up-down direction Z. The upward direction of the vertical direction or the substantially vertical direction is defined as the upper direction Z1, and the direction opposite to the upper direction Z1 is defined as the lower direction Z2. The outer shape of the cryostat 11 is, for example, roughly cylindrical, etc. For example, when viewed along the up-down direction Z, the cryostat 11 is circular or substantially circular, etc. The cryostat 11 has a bottom portion 11a, a side portion 11b, and an upper portion 11c constituting its outer surface. The cryostat 11 also has a refrigerant tank 11d, a vacuum tank 11e, and a magnet side connection portion 11p.

[0013] The bottom portion 11a constitutes the lower portion of the cryostat 11, and includes a surface facing the downward direction Z2. The side portion 11b includes a surface (peripheral surface) facing the lateral direction (the direction intersecting the vertical direction Z) of the cryostat 11. In the case where the cryostat 11 is substantially cylindrical, the side portion 11b includes a surface facing the radially outer side of the cryostat 11. The upper portion 11c constitutes the upper portion of the cryostat 11, and includes a surface facing the upward direction Z1.

[0014] The refrigerant tank 11d is a tank for storing a refrigerant R (for example, a cold-keeping refrigerant Ra) described later. Figure 1In the example shown, only one refrigerant tank 11d may be provided, or a plurality of refrigerant tanks 11d (not shown) may be provided. For example, in the case of providing a plurality of refrigerant tanks 11d, one refrigerant tank 11d for accommodating the superconducting magnet 13 and another refrigerant tank 11d disposed outside the refrigerant tank 11d (on a side away from the superconducting magnet 13, for example, radially outward, etc.) may be provided.

[0015] The vacuum tank 11e is a tank set to a vacuum state. The vacuum tank 11e is arranged outside the refrigerant tank 11d (on the side away from the superconducting magnet 13). In addition to the refrigerant tank 11d and the vacuum tank 11e, the cryostat 11 may also include a component for keeping the superconducting magnet 13 cold (for example, a radiation shield, etc.).

[0016] The magnet-side connection portion 11p is a portion (port) to which an exposed portion 33a (described later) of the refrigerant flow tube 33 is connected. The magnet-side connection portion 11p protrudes from the upper surface portion 11c in the upward direction Z1. The magnet-side connection portion 11p is formed integrally with the upper surface portion 11c, for example.

[0017] Superconducting magnet 13 is a magnet that generates a strong magnetic field. Superconducting magnet 13 includes a coil wound with a superconducting wire. Superconducting magnet 13 is housed in cryostat 11 and in refrigerant tank 11d. Superconducting magnet 13 is cooled to a low temperature by cryostat 11 and becomes a superconducting state.

[0018] The magnet support part 20 supports the magnet device body 10. The magnet support part 20 supports the magnet device body 10 in such a manner that the magnet device body 10 is arranged above the installation surface F. The installation surface F is a surface on which the superconducting magnet device 1 is installed, such as a floor surface. The magnet support part 20 supports the magnet device body 10 with the installation surface F as a reference. Specifically, the magnet support part 20 is arranged in such a manner that it extends from the installation surface F in the upward direction Z1. Figure 1 In the example shown, the magnet support portion 20 is mounted on the bottom surface portion 11a and fixed to the bottom surface portion 11a. Figure 2 In the example shown, the magnet support portion 20 may also be mounted on the side portion 11b and fixed to the side portion 11b (see Figure 2 The magnet support portion 120).

[0019] like Figure 1 As shown, the magnet support part 20 is preferably configured to reduce vibration transmitted from the installation surface F to the magnet device body 10. The magnet support part 20 is preferably a vibration isolator, for example. Specifically, the magnet support part 20 includes a magnet support body 21 and a vibration reduction device 23.

[0020] The main body 21 of the magnet support part is arranged in a manner extending from the setting surface F in the upward direction Z1. The main body 21 of the magnet support part is fixed to the setting surface F, for example. The main body 21 of the magnet support part can be in direct contact with the setting surface F, or can be placed on the setting surface F by a component (such as rubber, etc.) independent of the main body 21 of the magnet support part. The shape of the main body 21 of the magnet support part can be set to various shapes. For example, the shape of the main body 21 of the magnet support part can be a shape having a foot 21a, a table shape including the foot 21a, etc., or a shape without the foot 21a (such as a box shape, etc.).

[0021] The foot 21a is a columnar member. The foot 21a may be, for example, a cylindrical shape, or a columnar shape having a polygonal cross section (e.g., a quadrangular prism shape, etc.). In the present embodiment, a plurality of foot portions 21a are provided. For example, three foot portions 21a may be provided, or four or more foot portions 21a may be provided.

[0022] The vibration damping device 23 is a device for reducing the vibration transmitted from the magnet support part main body 21 to the magnet device main body 10. The vibration damping device 23 attenuates the vibration and roughly blocks the vibration. The vibration damping device 23 reduces the vibration, resulting in a reduction in the vibration transmitted from the installation surface F to the magnet device main body 10. The vibration damping device 23 reduces the vibration transmitted from the magnet support part main body 21 to the magnet device main body 10, resulting in a reduction in the vibration transmitted from the connecting member 50 to the magnet device main body 10. The vibration damping device 23 is arranged between the magnet support part main body 21 and the magnet device main body 10 (that is, arranged on the path of vibration transmission). The vibration damping device 23 is arranged between the connecting member 50 (described later) and the magnet device main body 10. The vibration damping device 23 is connected to, for example, the upper end of the magnet support part main body 21. The vibration damping device 23 can be connected to the bottom surface portion 11a, and can also be connected to the side surface portion 11b (refer to Figure 2 ).

[0023] The vibration damping device 23 may also include a device that uses fluid to reduce vibration. For example, the vibration damping device 23 may include a device that uses the pressure of the fluid (such as an air damper) or a device that uses the viscous resistance of the fluid (such as an oil-pressure damper). The vibration damping device 23 may also include a device that uses the deformation of an elastic member (such as rubber or an elastomer) to reduce vibration.

[0024] The refrigerant evaporation suppression device 30 is a device for suppressing evaporation of the refrigerant R. The refrigerant evaporation suppression device 30 includes a refrigerator 31 , a heat exchanger 35 , and a refrigerant flow pipe 33 .

[0025] <About Refrigerant R>

[0026] The refrigerant R cools the superconducting magnet 13. For example, the refrigerant R includes a cooling refrigerant Ra and a heat exchange refrigerant Rb. The cooling refrigerant Ra is placed in the refrigerant tank 11d to cool the superconducting magnet 13. Only one type of cooling refrigerant Ra may be used, or multiple types may be used. When only one type of cooling refrigerant Ra is used, the cooling refrigerant Ra is specifically liquid helium. When multiple types of cooling refrigerants Ra are used, the cooling refrigerant Ra includes a main refrigerant and an auxiliary refrigerant. The main refrigerant is placed in the refrigerant tank 11d that accommodates the superconducting magnet 13. The main refrigerant is specifically liquid helium. The auxiliary refrigerant is placed in another refrigerant tank 11d (not shown) provided outside the refrigerant tank 11d that accommodates the superconducting magnet 13. The auxiliary refrigerant may be, for example, liquid nitrogen or liquid argon.

[0027] The heat exchange refrigerant Rb is a refrigerant R (described in detail later) used to cool the cold-keeping refrigerant Ra and condense (liquefy) the cold-keeping refrigerant Ra. As with the cold-keeping refrigerant Ra, only one heat exchange refrigerant Rb may be used, or multiple heat exchange refrigerants Rb may be used. In addition, only the cold-keeping refrigerant Ra may be used without using the heat exchange refrigerant Rb (the heat exchanger 35 may not be used). The following mainly describes the case where the heat exchange refrigerant Rb is used.

[0028] The refrigerator 31 cools the refrigerant R (for example, the heat exchange refrigerant Rb). The refrigerator 31 cools the refrigerant R in the condensation chamber 31c (described later) by using the heat generated by the adiabatic expansion of the refrigeration refrigerant. In addition, the above-mentioned "refrigeration refrigerant" is not included in the refrigerant R used to cool the superconducting magnet 13. The refrigerator 31 is a very low temperature refrigerator, for example, it can be a Gifford-McMahon refrigerator, it can also be a pulse tube refrigerator, and it can also be other very low temperature refrigerators.

[0029] The refrigerator 31 is preferably configured in a manner that can suppress the vibration of the refrigerator 31 from being transmitted to the magnet device body 10. Specifically, the refrigerator 31 is configured at a position separated from the magnet device body 10 (a position separated by a gap). The refrigerator 31 is configured at a position that is not in direct contact with the magnet device body 10. In addition, the configuration (height) of the refrigerator 31 in the up-down direction Z will be described later. The refrigerator 31 has a drive portion 31a, a piston 31b, a condensation chamber 31c, and a refrigerator-side connection portion 31p.

[0030] The driving part 31a is a device that drives the piston 31b. The driving part 31a is, for example, a motor. The driving part 31a is preferably arranged at the lower part of the refrigerator 31 (described later). The piston 31b adiabatically expands the refrigeration refrigerant. The condensation chamber 31c is a part (space) that condenses the evaporated refrigerant R. The refrigerator-side connection part 31p is a part (port) to which the exposed part 33a (described later) of the refrigerant flow pipe 33 is connected.

[0031] The refrigerant flow pipe 33 is a pipe through which the refrigerant R (for example, the refrigerant Rb for heat exchange) flows. The refrigerant flow pipe 33 is constructed in such a way that the refrigerant R flows back and forth between the magnet device body 10 and the refrigerator 31. The refrigerant flow pipe 33 connects the magnet device body 10 and the refrigerator 31. In more detail, the refrigerant flow pipe 33 is connected to the heat exchanger 35 inside the magnet device body 10 and the condensation chamber 31c inside the refrigerator 31. The refrigerant flow pipe 33 extends from the condensation chamber 31c toward the heat exchanger 35 in the downward direction Z2 (described later). Condensed refrigerant R (liquid) and evaporated refrigerant R (gas) circulate in the refrigerant flow pipe 33. The condensed refrigerant R passing through the refrigerant flow pipe 33 is specifically the refrigerant R (for example, the refrigerant Rb for heat exchange) condensed in the refrigerator 31, and is the refrigerant R that flows from the refrigerator 31 to the magnet device body 10. The evaporated refrigerant R passing through the refrigerant circulation tube 33 is the refrigerant R evaporated inside the magnet device body 10 (for example, the heat exchange refrigerant Rb), and is the refrigerant R flowing from the magnet device body 10 to the refrigerator 31. The refrigerant circulation tube 33 may also be provided with a tube for the condensed refrigerant R to flow and a tube for the evaporated refrigerant R to flow, respectively (separately). For example, the refrigerant circulation tube 33 may be provided with a double tube or two tubes. In addition, the refrigerant circulation tube 33 may be provided with only one tube. The condensed refrigerant R and the evaporated refrigerant R may also flow in the refrigerant circulation tube 33 which is one tube. The refrigerant circulation tube 33 has an exposed portion 33a.

[0032] The exposed portion 33a is configured outside the refrigerator 31 and outside the magnet device body 10. The exposed portion 33a is connected to the magnet side connection portion 11p and the refrigerator side connection portion 31p. The exposed portion 33a can be deformed within a specified range (within a deformable range) and can be bent (with flexibility) within a specified range. Accordingly, the vibration transmitted from the refrigerator 31 to the magnet device body 10 through the exposed portion 33a is suppressed.

[0033] The heat exchanger 35 performs heat exchange between the cold-keeping refrigerant Ra and the heat-exchanging refrigerant Rb. The heat exchanger 35 is arranged inside the magnet device body 10. The heat exchanger 35 is arranged inside the refrigerant tank 11d. The heat exchanger 35 is arranged above the liquid level of the cold-keeping refrigerant Ra. The heat exchanger 35 is, for example, roughly cylindrical with a hollow interior.

[0034] Heat exchange and the like in the heat exchanger 35 are performed as follows. The heat exchange refrigerant Rb (liquid) condensed in the condensing chamber 31c passes through the refrigerant circulation pipe 33 and enters the interior of the heat exchanger 35. A portion of the cold-keeping refrigerant Ra evaporates inside the refrigerant tank 11d. The evaporated cold-keeping refrigerant Ra contacts the outer surface of the heat exchanger 35 and is cooled and condensed. The condensed cold-keeping refrigerant Ra falls to the liquid surface inside the refrigerant tank 11d and is stored in the refrigerant tank 11d. The heat exchange refrigerant Rb inside the heat exchanger 35 evaporates using the heat transferred from the cold-keeping refrigerant Ra through the heat exchanger 35. The evaporated heat exchange refrigerant Rb (gas) returns to the condensing chamber 31c through the refrigerant circulation pipe 33.

[0035] <Configuration of Refrigerator 31, etc.>

[0036] The refrigerator 31 is preferably configured in a manner that can utilize the natural circulation of the gas-liquid refrigerant R. More specifically, the refrigerator 31 is preferably configured at a height (position in the vertical direction Z) at which the refrigerant R (liquid) condensed in the refrigerator 31 can flow from the refrigerator 31 through the refrigerant flow pipe 33 to the inside of the magnet device body 10 by the dead weight of the refrigerant R. With this configuration, there is no need to provide a pump that forcibly circulates the refrigerant R condensed in the refrigerator 31 from the refrigerator 31 to the inside of the magnet device body 10. As a result, it is possible to avoid the situation where the vibration generated by the pump is transmitted to the magnet device body 10.

[0037] Specifically, the refrigerator 31 is preferably arranged at a height where the heat exchange refrigerant Rb (liquid) condensed in the condensing chamber 31c can flow from the condensing chamber 31c through the refrigerant flow pipe 33 to the heat exchanger 35 by utilizing the dead weight of the heat exchange refrigerant Rb. And, specifically, the condensing chamber 31c is preferably arranged above the heat exchanger 35. The refrigerator-side connection portion 31p is preferably arranged above the magnet-side connection portion 11p. The refrigerant flow pipe 33 preferably extends downward from the condensing chamber 31c toward the heat exchanger 35. The exposed portion 33a preferably extends downward from the refrigerator-side connection portion 31p toward the magnet-side connection portion 11p. The refrigerant flow pipe 33 may be a portion extending in a straight line or a portion extending in a curve. A portion of the refrigerant flow pipe 33 may extend in a horizontal direction (this case is also included in the above-mentioned "extending downward" case).

[0038] The refrigerator 31 is preferably arranged at a low position (lower position) as much as possible. By arranging the refrigerator 31 at a low position as much as possible, the length of the beam (column) B described later can be shortened. Specifically, for example, the drive unit 31a is preferably arranged below the condensation chamber 31c. In this case, the refrigerator 31 can be arranged at a lower position compared to the case where the drive unit 31a is arranged above the condensation chamber 31c. For example, the drive unit 31a is preferably arranged at the lower part of the refrigerator 31. The drive unit 31a is preferably arranged below the piston 31b. For example, the lower end portion of the refrigerator 31 (for example, the drive unit 31a) is preferably arranged at a position below the upper end portion of the upper portion 11c of the low-temperature thermostat 11.

[0039] The refrigerator support part 40 supports the refrigerator 31 in such a manner that the refrigerator 31 is arranged above the installation surface F. The refrigerator support part 40 preferably supports the refrigerator 31 in such a manner that the condensation chamber 31c is arranged above the heat exchanger 35. The refrigerator support part 40 supports the refrigerator 31 from below. Specifically, the refrigerator support part 40 is arranged in such a manner that it extends upward from a position lower than the position of the refrigerator 31. The refrigerator support part 40 is arranged at a position separated from the magnet device body 10 (a position separated by a gap). The refrigerator support part 40 is arranged at a position that is not in direct contact with the magnet device body 10. The refrigerator support part 40 is arranged at a horizontal gap between the magnet device body 10. The refrigerator support part 40 has a refrigerator support part body 41 and a refrigerator mounting part 43.

[0040] The refrigerator support body 41 is the main body of the refrigerator support 40. The refrigerator support body 41 is configured to extend upward from a position lower than the position of the refrigerator 31. For example, the refrigerator support body 41 is configured to extend upward from the setting surface F. The refrigerator support body 41 is fixed to the setting surface F, for example. The refrigerator support body 41 can be directly in contact with the setting surface F, or it can be placed on the setting surface F by a member (such as rubber, etc.) independent of the refrigerator support body 41. In addition, the refrigerator support body 41 may not be set in a manner extending upward from the setting surface F, for example, it may be extended upward from the connecting member 50. The refrigerator support body 41 includes a columnar member. The refrigerator support body 41 may be, for example, a cylindrical shape, or a columnar shape with a polygonal cross-section (such as a quadrangular prism, etc.). In the present embodiment, only one refrigerator support body 41 is provided. A plurality of refrigerator support bodies 41 (not shown) may also be provided.

[0041] The refrigerator mounting portion 43 is a portion to which the refrigerator 31 is mounted. The refrigerator mounting portion 43 holds the refrigerator 31 on the refrigerator support portion body 41 .

[0042] The connection member 50 suppresses vibration of a beam B (described later) including the refrigerator support portion 40 and the refrigerator 31. The connection member 50 connects the refrigerator support portion 40 and the magnet support portion 20 at a position above the installation surface F. When a plurality of connection members 50 are provided (described later), the connection member 50 disposed at the top is referred to as a connection member 50a.

[0043] <About Vibration>

[0044] Here, the case where the connecting member 50 is not provided is discussed. In this case, the refrigerator 31 which is arranged at a high position relative to the setting surface F becomes an excitation source, and the refrigerator support part 40 and the refrigerator 31 vibrate as a whole. At this time, the refrigerator support part 40 and the refrigerator 31 become a cantilever beam (beam (column) A) with the setting surface F as the fixed point Aa. The longer the length of beam A (the length in the up and down direction Z), the greater the vibration amplitude of beam A, and the natural frequency of beam A decreases. The vibration of beam A is transmitted to the magnet device body 10 through the refrigerant flow pipe 33 and the setting surface F. The vibration transmitted to the magnet device body 10 affects the measurement (NMR measurement) of the sample S in the magnet device body 10, and specifically appears as noise. In particular, the low-frequency (for example, below 10 Hz) vibration transmitted to the magnet device body 10 has a great influence on the NMR measurement.

[0045] In this regard, the connecting member 50 suppresses the vibration of the refrigerator support part 40 and the refrigerator 31 as a whole (beam A). Specifically, the connecting member 50 connects the refrigerator support part 40 and the magnet support part 20 at a position above the setting surface F. Accordingly, the part of the refrigerator support part 40 that is higher than the connecting member 50 and the refrigerator 31 become a cantilever beam (beam B). The height of the fixed point Ba of the beam B (the position in the up and down direction Z) becomes the height of the connecting member 50, which is located above the fixed point Aa. In the case of setting a plurality of connecting members 50, the height of the fixed point Ba is the height of the topmost connecting member 50a. By setting the connecting member 50, the length of the beam B is shorter than the length of the beam A. Therefore, the vibration amplitude of the beam B is small compared with the vibration amplitude of the beam A. Therefore, the vibration amplitude transmitted from the beam B to the magnet device body 10 is suppressed. In addition, since the length of the beam B is shorter than the length of the beam A, the natural frequency of the beam B is higher than the natural frequency of the beam A. Therefore, the low frequency transmitted from the beam B to the magnet device body 10 is suppressed. Therefore, the influence on the measurement of the sample S in the magnet device main body 10 is suppressed.

[0046] The connecting member 50 is connected to the refrigerator support part 40. More specifically, the connecting member 50 is connected to the refrigerator support part body 41. The connecting member 50 is fixed to the refrigerator support part body 41. The connecting member 50 can be detachably fixed to the refrigerator support part body 41 by a fastening member or the like, or can be fixed to the refrigerator support part body 41 by welding or the like.

[0047] The connecting member 50 is connected to the magnet support part 20. More specifically, the connecting member 50 is connected to the magnet support part main body 21. For example, when the magnet support part main body 21 is provided with a foot 21a, the connecting member 50 is connected to the foot 21a. When a plurality of foot 21a are provided, the connecting member 50 may be connected to only one foot 21a or to a plurality of foot 21a. The connecting member 50 is fixed to the magnet support part main body 21. The connecting member 50 may be detachably fixed to the magnet support part main body 21 by a fastening member or the like, or may be fixed to the magnet support part main body 21 by welding or the like. When the magnet support part 20 is provided with a vibration damping device 23, the connecting member 50 is connected to the magnet support part main body 21 at a position on the side opposite to the magnet device main body 10 side relative to the vibration damping device 23. Specifically, the connecting member 50 is connected to the magnet support part main body 21 at a position below the vibration damping device 23.

[0048] The connecting member 50 is configured, for example, to extend in the horizontal direction. Specifically, the connecting member 50 may be a plate-shaped member extending in the horizontal direction. In addition, the connecting member 50 may be inclined relative to the horizontal direction. The connecting member 50 may not be a plate-shaped member, but may be a rod-shaped member, a block-shaped member, or the like.

[0049] The connection member 50 is preferably arranged at a position as high as possible (upper position). When a plurality of connection members 50 are provided, the uppermost connection member 50a is preferably arranged at a position as high as possible (upper position). By arranging the connection member 50 at a position as high as possible, the fixing point Ba is arranged at a higher position, and the beam B becomes shorter. As a result, the amplitude of the beam B is further reduced, and the natural frequency of the beam B is higher. Figure 1 and Figure 2 In the example shown, the connection member 50 (for example, the uppermost connection member 50a) is arranged below the vibration reduction device 23 and in the vicinity of the vibration reduction device 23. Figure 2 In the example shown, the connection member 50 (for example, the uppermost connection member 50a) is arranged above the bottom surface 11a of the magnet device body 10. Specifically, for example, the connection member 50 is arranged at a position about 1 m higher than the installation surface F.

[0050] In addition, a plurality of connection members 50 may be provided. In this case, the plurality of connection members 50 are arranged at intervals from each other in the up-down direction Z. Figure 1 In the example shown, two connecting members 50 are provided. Figure 2 In the example shown, four connecting members 50 are provided. Three connecting members 50 may be provided, or five or more connecting members 50 may be provided. By providing a plurality of connecting members 50, the magnet support part 20, the plurality of connecting members 50, and the refrigerator support part 40 are integrally connected and fixed. Therefore, the rigidity of the magnet support part 20, the refrigerator support part 40, and the plurality of connecting members 50 as a whole is improved (deformation is suppressed). As a result, the vibration of the beam B is suppressed, and the vibration of the magnet device body 10 is suppressed.

[0051] Figure 1 The superconducting magnet device 1 shown has the following effects. The superconducting magnet device 1 includes a magnet device main body 10 having a superconducting magnet 13, a magnet support part 20, a refrigerant 31, a refrigerator support part 40, and a connecting member 50. The magnet support part 20 supports the magnet device main body 10 from the installation surface F in such a manner that the magnet device main body 10 is arranged above the installation surface F.

[0052] [Configuration 1-1] Refrigerator 31 is disposed at a distance from magnet apparatus main body 10 and cools refrigerant R for cooling superconducting magnet 13. Refrigerator support 40 supports refrigerator 31 from below so that refrigerator 31 is disposed above installation surface F.

[0053] [Configuration 1-2] The connecting member 50 connects the refrigerator support portion 40 and the magnet support portion 20 at a position above the installation surface F.

[0054] In the above-mentioned [Configuration 1-1], the refrigerator support portion 40 and the refrigerator 31 are cantilever beams (beams B). By means of the above-mentioned [Configuration 1-2], the connection member 50 (at the top of the installation surface F) can be Figure 1 In the example, the position of the topmost connecting member 50a) is used as the fixed point Ba of the beam B. Therefore, compared with the height of the fixed point Aa (the position in the up-down direction Z) when the connecting member 50 is not provided, the height of the fixed point Ba in the case where the connecting member 50 is provided can be made higher (above). Therefore, the length of the beam B (the length in the up-down direction Z) can be shortened. Therefore, the vibration amplitude of the beam B can be suppressed. As a result, the vibration amplitude transmitted to the magnet device body 10 can be suppressed. In addition, since the length of the beam B can be shortened, the natural frequency of the beam B can be increased. Therefore, the low-frequency (for example, below 10 Hz) vibration transmitted to the magnet device body 10 can be suppressed. Therefore, the superconducting magnet device 1 can suppress the vibration that affects the measurement in the magnet device body 10 (the measurement of the sample S).

[0055] Superconducting magnet apparatus 1 includes a refrigerant flow pipe 33 . Refrigerant R flows through refrigerant flow pipe 33 . Refrigerant flow pipe 33 connects magnet apparatus main body 10 and refrigerator 31 .

[0056] [Configuration 2] The refrigerator 31 is disposed at a height at which the refrigerant R condensed in the refrigerator 31 can flow from the refrigerator 31 through the refrigerant flow pipe 33 to the inside of the magnet device main body 10 by the weight of the refrigerant R.

[0057] In the above-mentioned [Configuration 2], the refrigerator 31 is arranged at a high position (above position) where the refrigerant R can flow from the refrigerator 31 to the inside of the magnet device body 10 by its own weight. Therefore, the refrigerator support part 40 supporting the refrigerator 31 is easy to be elongated in the up-down direction Z, and the beam B is easy to be elongated. Therefore, if the connecting member 50 is not provided, the vibration that affects the measurement in the magnet device body 10 may become a problem. However, in the superconducting magnet device 1, the beam B can be shortened by the connecting member 50 of the above-mentioned [Configuration 1]. Therefore, the superconducting magnet device 1 can suppress the vibration that affects the measurement in the magnet device body 10 even when the refrigerator 31 is arranged at a height as in the above-mentioned [Configuration 2].

[0058] The magnet support part 20 includes a magnet support part body part 21 and a vibration reduction device 23. The magnet support part body part 21 is used to connect the connection member 50.

[0059] [Configuration 3] The vibration reduction device 23 is disposed between the magnet support body 21 and the magnet device body 10. The vibration reduction device 23 reduces vibration transmitted from the magnet support body 21 to the magnet device body 10.

[0060] The following effects can be obtained by the above-mentioned [Configuration 3]. In the above-mentioned [Configuration 1], the refrigerator support part 40 and the magnet support part 20 are connected by the connecting member 50. Therefore, the vibration of the refrigerator 31 and the refrigerator support part 40 (the vibration of the beam B) is transmitted to the magnet support part 20 through the connecting member 50. The superconducting magnet device 1 has the vibration reduction device 23 of the above-mentioned [Configuration 3]. Therefore, even if the vibration of the refrigerator 31 and the refrigerator support part 40 (the vibration of the beam B) is transmitted to the magnet support part main body 21 via the connecting member 50, the vibration is not easily transmitted to the magnet device main body 10. Therefore, the superconducting magnet device 1 can suppress the vibration that affects the measurement in the magnet device main body 10 from being transmitted to the magnet device main body 10. In addition, in Figure 1In the example of , the vibration reduction device 23 is connected to the lower portion 11a of the magnet device body 10, particularly the outer peripheral portion of the lower portion 11a, and is located between the lower portion 11a and the magnet support body 21 in the vertical direction. In this case, the structure including the magnet device body 10 and the magnet support 20 can be made compact in the radial direction (width direction).

[0061] In addition, Figure 2 In the example of FIG. 1 , the vibration reduction device 23 is connected to the side surface 11b of the magnet device body 10, particularly the lower part of the side surface 11b, in a radially protruding manner. The magnet support body 21 extends downward from the vibration reduction device 23 to the installation surface F. In this case, the structure including the magnet device body 10 and the magnet support 20 is not easy to fall over, and can stably support the magnet device body 10.

[0062] [Configuration 4] In the present embodiment, a plurality of connection members 50 are provided. The plurality of connection members 50 are arranged at intervals from each other in the up-down direction Z.

[0063] By means of the above-mentioned [Configuration 4], the magnet support part 20, the refrigerator support part 40, and the plurality of connecting members 50 can be connected and fixed to each other in an integral manner. Therefore, the rigidity of the magnet support part 20, the refrigerator support part 40, and the plurality of connecting members 50 as a whole can be improved (deformation can be suppressed). Therefore, the superconducting magnet device 1 can suppress vibrations that affect measurements in the magnet device main body 10.

[0064] <Modification>

[0065] The above-mentioned embodiment can be variously modified. For example, the modified examples of the above-mentioned embodiment can be variously combined with each other. For example, the number of components (including modified examples) of the above-mentioned embodiment can be changed, and a part of the components can be set. Specifically, for example, the number of connecting members 50 can also be changed. For example, the configuration of the components can also be changed. For example, the inclusion relationship of the components can be variously changed. For example, the element described as a lower component contained in a certain upper component may not be included in the upper component, but may be included in other components. Specifically, for example, the connecting member 50 can also be a component of the refrigerant evaporation suppression device 30. For example, the components or parts described as multiple components or parts different from each other can also be used as one component or part. For example, the components or parts described as one component or part can also be separated into multiple components or parts different from each other and set. Specifically, for example, the refrigerator support body 41 can also include multiple components (for example, columnar components). In this case, the multiple components constituting the refrigerator support body 41 are each connected to the connecting member 50. For example, each component may have only a part of each characteristic (action function, arrangement, shape, operation, etc.).

Claims

1. A superconducting magnet device, characterized in that include: A magnet device body having a superconducting magnet; A magnet support portion supports the magnet device body in such a manner that the magnet device body is arranged above a setting surface; A refrigerator is arranged at a distance from the main body of the magnet device and cools a refrigerant for cooling the superconducting magnet; a refrigerator support portion for supporting the refrigerator from below in such a manner that the refrigerator is arranged above the installation surface; as well as At least one connecting member connects the refrigerator support portion and the magnet support portion at a position above the installation surface.

2. The superconducting magnet device according to claim 1, characterized in that Also includes: A refrigerant flow pipe connects the magnet device body and the refrigerator and flows the refrigerant, wherein: The refrigerator support portion supports the refrigerator at a height such that the refrigerator is configured so that the refrigerant condensed in the refrigerator can flow from the refrigerator through the refrigerant flow pipe to the inside of the magnet device body by its own weight.

3. The superconducting magnet device according to claim 1 or 2, characterized in that: The magnet support portion comprises: a magnet support body connected to the at least one connecting member; and The vibration reduction device is arranged between the magnet support body and the magnet device body, and reduces vibration transmitted from the magnet support body to the magnet device body.

4. The superconducting magnet device according to claim 1 or 2, characterized in that: The at least one connection member is a plurality of connection members, and the plurality of connection members are arranged at intervals from each other in the up-down direction.

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