Heat insulation structure and nuclear magnetic probe
By using a combination of support components and vacuum silver-plated heat insulation components in the nuclear magnetic resonance (NMR) probe, the problems of complex assembly and low heat insulation performance in the prior art are solved, achieving efficient heat insulation and stable NMR imaging.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-31
AI Technical Summary
Existing MRI probes use a combination of insulation and metal shielding layers for thermal insulation, which results in complex assembly and low thermal insulation performance. The metal shielding layer generates eddy currents in the alternating magnetic field, affecting the quality of MRI imaging.
The structure employs a combination of support and insulation components, including a vacuum chamber and a silver plating layer. The absolute pressure inside the vacuum chamber is less than or equal to 10⁻³ Pa, and the thickness of the silver plating layer is greater than 20 μm, which reduces heat transfer and avoids the generation of eddies.
It improves thermal insulation performance, avoids the impact of high or low temperatures on the heat of other electronic components and probe surfaces, simplifies the assembly process, and ensures the quality of MRI imaging.
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Figure CN224069002U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to nuclear magnetic resonance detection technical field, concretely relates to heat -insulating structure and nuclear magnetic probe. BACKGROUND
[0002] Nuclear magnetic resonance (NMR) is a kind of analytical testing technology widely used in physics, chemistry, biology and other fields, and its basic principle is that sample is placed in a strong magnetic field, then the atomic nucleus in the sample is excited by radio frequency pulse to make it level transition, then the electromagnetic wave signal absorbed or emitted is detected to obtain the structure and dynamic information of the sample.
[0003] In the prior art, in the wide temperature range variable temperature nuclear magnetic probe, once the heat of the temperature control area is transmitted in large quantities, it will bring negative effects to the service life of electronic devices such as capacitors and resistors, at the same time, the heat change amplitude of the probe surface is too large, which will also affect the magnet heat, and the change of the magnet heat will cause the change of its frequency, finally affecting the stability of nuclear magnetic measurement. At present, the solution of combining heat preservation layer and metal shielding layer is usually used to solve the heat insulation problem of variable temperature nuclear magnetic probe, wherein the heat preservation layer can increase the heat transfer resistance between the temperature control area and the environment due to its small thermal conductivity and low surface emissivity, and the metal shielding layer can eliminate the interference of the nuclear magnetic signal excited by the heat preservation material to the test sample nuclear magnetic signal.
[0004] However, the existing heat insulation structure adopts the scheme of combining heat preservation layer and metal shielding layer, which makes the assembly of the nuclear magnetic probe more complex, at the same time, the heat insulation performance of the heat preservation layer is low, and the metal shielding layer will generate eddy current in the alternating magnetic field, resulting in poor nuclear magnetic imaging quality or no imaging. UTILITY MODEL CONTENT
[0005] Therefore, the utility model provides a kind of heat insulation structure to solve the problem that the existing heat insulation structure adopts the scheme of combining heat preservation layer and metal shielding layer, which makes the assembly of the nuclear magnetic probe more complex, at the same time, the heat insulation performance of the heat preservation layer is low, and the metal shielding layer will generate eddy current in the alternating magnetic field, resulting in poor nuclear magnetic imaging quality or no imaging.
[0006] In the first aspect, the utility model provides a kind of heat insulation structure, it is suitable for being installed in nuclear magnetic probe, and it includes:
[0007] Supporting assembly includes at least two supporting pieces and mounting piece, two the supporting piece is oppositely arranged, the mounting piece is arranged between two the supporting piece, and the two ends of the mounting piece are connected with a the supporting piece respectively, the through portion is opened in any the supporting piece, the placing portion is opened in the mounting piece, the placing portion is communicated with the through portion and is arranged, and the placing portion is suitable for placing sample in.
[0008] A heat insulation assembly is sleeved between the two support members and the mounting member, and has a vacuum cavity with a silver-plated inner wall.
[0009] Beneficial effects: when the temperature control gas is blown into the sample in the placing part through the through part, the heat insulation assembly can reduce the heat conduction and convection between the cold and hot surfaces of the vacuum cavity through the vacuum cavity, and the silver-plated layer can inhibit the radiation heat transfer between the cold and hot surfaces in the vacuum cavity, so that the silver-plated layer can effectively reduce the heat dissipation in the placing part when it is at high temperature, and can effectively reduce the heat transfer from the outside to the placing part when it is at low temperature, thereby avoiding the influence of the high or low temperature in the placing part on the heat of other electronic elements and the probe surface, so as to improve the heat insulation performance of the heat insulation structure, and the heat insulation structure does not have a metal shielding layer, so it will not generate eddy current in the alternating magnetic field, thereby avoiding the poor or impossible imaging of the nuclear magnetic imaging, and the heat insulation structure is composed of the support assembly and the heat insulation assembly, so it is easy to install and can reduce the overall assembly difficulty of the probe.
[0010] In an optional embodiment, the absolute pressure in the vacuum cavity is less than or equal to 10 -3 Pa.
[0011] Beneficial effects: by setting the absolute pressure in the vacuum cavity to be less than or equal to 10 -3 Pa, the amount of air in the vacuum cavity can be greatly reduced, and the heat conduction and convection between the cold and hot surfaces of the vacuum cavity can be effectively reduced to further reduce the heat dissipation in the placing part.
[0012] In an optional embodiment, the thickness of the silver-plated layer on the inner wall of the vacuum cavity is greater than 20 μm.
[0013] Beneficial effects: by setting the thickness of the silver-plated layer on the inner wall of the vacuum cavity to be greater than 20 μm, the properties of the silver-plated layer can be fully utilized, and the radiation heat transfer between the cold and hot surfaces in the vacuum cavity of the heat insulation assembly can be effectively inhibited to further reduce the heat dissipation in the placing part.
[0014] In an optional embodiment, a radio frequency member is further included, which is arranged around the outer surface of the mounting member, and both ends of the radio frequency member penetrate the heat insulation assembly to be connected with an external receiving device, the radio frequency member is used for emitting the radio frequency pulse signal provided by the external receiving device and receiving the nuclear magnetic signal generated by the sample.
[0015] Beneficial effects: through the radio frequency part provided on the mounting piece, the radio frequency part is a radio frequency coil in this embodiment, the radio frequency part is specifically provided around the outer surface of the mounting piece, and the two ends of the radio frequency part are respectively connected with the external receiving device through the thermal insulation assembly to receive the radio frequency pulse signal provided by the external receiving device, so as to excite the sample to generate nuclear magnetic resonance phenomenon, and the radio frequency part receives the nuclear magnetic signal generated by the sample to the external receiving device, which is used for detecting the nuclear magnetic characteristics of the sample under different heat.
[0016] In an alternative embodiment, at least two accommodating portions are provided on the thermal insulation assembly, the two accommodating portions are arranged to avoid each other, and the two ends of the radio frequency part are adapted to pass through one of the accommodating portions and be connected with the external receiving device.
[0017] Beneficial effects: through the two accommodating portions provided on the thermal insulation assembly, the accommodating portions are accommodating holes in this embodiment, and the two accommodating portions are arranged to avoid each other on the thermal insulation assembly, so that the two ends of the radio frequency part can pass through one of the accommodating portions and be connected with the external receiving device, thereby the two ends of the radio frequency part can be directly led out to the outside, and the connection between the radio frequency part and the external receiving device is facilitated.
[0018] In an alternative embodiment, the thermal insulation assembly comprises a thermal insulation part and at least two connecting parts, the thermal insulation part is sleeved between the two supporting parts and the mounting part, the thermal insulation part has the vacuum cavity, the two connecting parts are arranged in the vacuum cavity, and the accommodating portion is provided on the connecting part.
[0019] Beneficial effects: by providing the thermal insulation assembly comprising an integrated thermal insulation part and two connecting parts, the integrated thermal insulation part and the two connecting parts can ensure the air tightness of the vacuum cavity, and can ensure that the subsequent silver plating vacuumization process of the inner surface of the vacuum cavity is smoothly carried out, the thermal insulation part and the connecting part are glass jackets and connecting blocks in this embodiment, wherein the thermal insulation part is sleeved between the two supporting parts and the mounting part, and the vacuum cavity is provided on the thermal insulation part, the two connecting parts are arranged in the vacuum cavity, and the accommodating portion is provided on the connecting part, so that the vacuum cavity can be kept in a vacuum state through the connecting part, avoiding the situation that the accommodating portion is directly provided on the thermal insulation part, which causes the outside air to enter the vacuum cavity and makes the vacuum cavity not in a vacuum state.
[0020] In an alternative embodiment, at least two sealing parts are further included, any of the sealing parts is arranged in the accommodating portion, and is arranged between the radio frequency part and the connecting part to seal the gap between the radio frequency part and the connecting part.
[0021] Beneficial effects: By setting the sealing element in the let go part, the sealing element is a four fluorine tube in this embodiment, and the sealing element is specifically provided with two, each sealing element corresponds to one let go part, and the sealing element is specifically arranged between the radio frequency element and the connecting element, thereby sealing the gap between the radio frequency element and the connecting element, thereby avoiding the heat in the placement part from being dissipated to the outside through the gap between the radio frequency element and the connecting element, or the heat from the outside entering the placement part through the gap.
[0022] In an alternative embodiment, each of the support members is provided with a support portion, and when the heat insulation assembly is sleeved between the two support members and the mounting member, the two support portions are adapted to abut against one end of the heat insulation assembly respectively to fix the heat insulation assembly.
[0023] Beneficial effects: By setting the support portion on the support member, the support portion is a support plate in this embodiment, and when the heat insulation assembly is sleeved between the two support members and the mounting member, the two support portions can abut against one end of the heat insulation assembly respectively, thereby fixing the heat insulation assembly between the two support members and the mounting member.
[0024] In an alternative embodiment, each of the support members is provided with a limiting portion, and the limiting portion is adapted to abut against the side wall of the heat insulation assembly to limit the heat insulation assembly.
[0025] Beneficial effects: By setting the limiting portion on the support member, the limiting portion is a limiting plate in this embodiment, and the limiting portion is vertically arranged between the support portion, thereby abutting against the side wall of the heat insulation assembly when the support portion supports the heat insulation assembly, thereby limiting the heat insulation assembly on the support portion.
[0026] In a second aspect, the utility model also provides a nuclear magnetic probe, including above-mentioned heat insulation structure.
[0027] Beneficial effects: By comprising the above-mentioned heat insulation structure, when the temperature control gas is blown into the placement part from the through portion to control the temperature of the sample, the heat insulation assembly can reduce the heat conduction and convection heat transfer between the cold and hot surfaces of the vacuum cavity, and the silver-plated layer can inhibit the radiation heat transfer between the cold and hot surfaces in the vacuum cavity, thereby effectively avoiding the heat dissipation in the placement part, and further avoiding the influence of the high temperature or low temperature in the placement part on other electronic elements and the surface heat of the probe. In this way, it is beneficial to improve the heat insulation performance of the heat insulation structure, and the heat insulation structure does not have a metal shielding layer, so it will not produce eddy current in the alternating magnetic field, thereby avoiding the poor nuclear magnetic imaging quality or the inability to image. At the same time, the heat insulation structure is composed of a support assembly and a heat insulation assembly, which is easy to install and can reduce the overall assembly difficulty of the probe. BRIEF DESCRIPTION OF DRAWINGS
[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, obviously, the drawings described in the following are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0029] Figure 1 A structure diagram of a heat insulation structure of the embodiment of the present application;
[0030] Figure 2 A cross-sectional view of a heat insulation structure of the embodiment of the present application;
[0031] Figure 3 A partial cross-sectional view of a heat insulation structure of the embodiment of the present application;
[0032] Figure 4 Another partial cross-sectional view of a heat insulation structure of the embodiment of the present application.
[0033] Explanation of reference signs:
[0034] 1 - support assembly; 11 - support piece; 111 - through portion; 112 - support portion; 113 - limiting portion; 12 - mounting piece; 121 - placing portion; 2 - heat insulation assembly; 21 - heat insulation piece; 22 - connecting piece; 3 - radio frequency piece; 4 - sealing piece. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application, obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0036] The embodiments of the present application will be described below in combination with Figures 1 to 4 .
[0037] According to the embodiments of the present application, on the one hand, a heat insulation structure is provided, which is suitable to be installed in a nuclear magnetic probe, such as Figures 1 to 4As shown, including support assembly 1 and heat insulation assembly 2, support assembly 1 includes at least two support pieces 11 and mounting piece 12, two support pieces 11 are oppositely arranged, mounting piece 12 is arranged between two support pieces 11, and two ends of mounting piece 12 are respectively connected with a support piece 11, a through portion 111 is opened on any support piece 11, a placing portion 121 is opened on mounting piece 12, the placing portion 121 is arranged in communication with the through portion 111, and the placing portion 121 is suitable for placing a sample; heat insulation assembly 2 is sleeved between two support pieces 11 and mounting piece 12, heat insulation assembly 2 has a vacuum cavity, and the inner wall surface of the vacuum cavity is silver-plated.
[0038] The heat insulation structure has the advantages that: the heat insulation assembly 2 is sleeved on the support assembly 1, the support assembly 1 includes two support pieces 11 and a mounting piece 12, the support pieces 11 and the mounting piece 12 are respectively a glass skeleton support and a coil skeleton in this embodiment, the two support pieces 11 are oppositely arranged, the mounting piece 12 is arranged between the two support pieces 11, and two ends of the mounting piece 12 are respectively connected with a support piece 11, so that the two support pieces 11 and the mounting piece 12 are connected into one body, in addition, a through portion 111 is opened on each support piece 11, the through portion 111 is a through hole in this embodiment, a placing portion 121 is opened on the mounting piece 12, the placing portion 121 is a placing channel in this embodiment, and the placing portion 121 is arranged in communication with the through portion 111, so that the sample can be placed into the placing portion 121 through the through portion 111, and the sample can be detected in the placing portion 121; the heat insulation assembly 2 is sleeved between the two support pieces 11 and the mounting piece 12, and the heat insulation assembly 2 has a vacuum cavity, and the inner wall surface of the vacuum cavity is silver-plated.
[0039] Specifically, when the temperature control gas is blown into the placing portion 121 from the through portion 111 to control the temperature of the sample, the heat insulation assembly 2 can reduce the heat conduction and convection heat transfer between the cold and hot surfaces of the vacuum cavity through the vacuum cavity, and the silver-plated layer can inhibit the radiation heat transfer between the cold and hot surfaces in the vacuum cavity, so that when the placing portion 121 is at a high temperature, the silver-plated layer can effectively reduce the outward dispersion of heat in the placing portion 121, and when the placing portion 121 is at a low temperature, the silver-plated layer can effectively reduce the transmission of external heat into the placing portion 121, thereby avoiding the influence of the high or low temperature in the placing portion 121 on the heat of other electronic elements and the probe surface, so as to facilitate the improvement of the heat insulation performance of the heat insulation structure, and the heat insulation structure does not have a metal shielding layer, so as to avoid the generation of eddy current in the alternating magnetic field, thereby avoiding the poor or impossible imaging of the nuclear magnetic imaging, and the heat insulation structure is composed of the support assembly 1 and the heat insulation assembly 2, so as to facilitate the installation and reduce the overall assembly difficulty of the probe.
[0040] In one embodiment, as shown in Figures 1 to 4 the absolute pressure in the vacuum cavity is less than or equal to 10-3 Pa.
[0041] The heat insulation structure has the advantages that the absolute pressure of the vacuum cavity is less than or equal to 10 Pa, so that the amount of air in the vacuum cavity is greatly reduced, and the heat conduction and convection heat transfer between the cold surface and the hot surface in the vacuum cavity are effectively reduced, so that the heat dissipation of the sample in the placement portion 121 is further reduced. -3 Pa, so that the amount of air in the vacuum cavity is greatly reduced, and the heat conduction and convection heat transfer between the cold surface and the hot surface in the vacuum cavity are effectively reduced, so that the heat dissipation of the sample in the placement portion 121 is further reduced.
[0042] In one embodiment, as shown in Figures 1 to 4 , the thickness of the silver plating layer on the inner wall surface of the vacuum cavity is greater than 20 μm.
[0043] The heat insulation structure has the advantages that the thickness of the silver plating layer on the inner wall surface of the vacuum cavity is greater than 20 μm, so that the properties of the silver plating layer can be fully utilized, and the radiation heat transfer between the cold surface and the hot surface in the vacuum cavity of the heat insulation assembly 2 is effectively inhibited, so that the heat dissipation of the sample in the placement portion 121 is further reduced.
[0044] In one embodiment, as shown in Figure 2 and Figure 3 , the heat insulation assembly 2 further comprises a radio frequency component 3, the radio frequency component 3 is arranged around the outer surface of the mounting component 12, and both ends of the radio frequency component 3 penetrate the heat insulation assembly 2 and are connected to the external receiving device, the radio frequency component 3 is used to emit the radio frequency pulse signal provided by the external receiving device, and receive the nuclear magnetic signal generated by the sample.
[0045] The heat insulation structure has the advantages that the radio frequency component 3 is arranged on the mounting component 12, the radio frequency component 3 is a radio frequency coil in this embodiment, and the radio frequency component 3 is arranged around the outer surface of the mounting component 12, and both ends of the radio frequency component 3 penetrate the heat insulation assembly 2 and are connected to the external receiving device, so as to receive the radio frequency pulse signal provided by the external receiving device, so as to excite the sample to generate nuclear magnetic resonance phenomenon, and the radio frequency component 3 receives the nuclear magnetic signal generated by the sample to the external receiving device, which is used to detect the nuclear magnetic characteristics of the sample under different heat.
[0046] In one embodiment, as shown in Figure 2 and Figure 3 , at least two accommodating portions are formed in the heat insulation assembly 2, the two accommodating portions are arranged to avoid each other, and the two ends of the radio frequency component 3 are adapted to penetrate one of the accommodating portions and be connected to the external receiving device.
[0047] The heat insulation structure has the advantages that the two accommodating portions are formed in the heat insulation assembly 2, the two accommodating portions are arranged to avoid each other, and the two ends of the radio frequency component 3 are adapted to penetrate one of the accommodating portions and be connected to the external receiving device.
[0048] In one embodiment, such as Figure 2 and Figure 3 As shown, the heat insulation component 2 includes a heat insulation element 21 and at least two connectors 22. The heat insulation element 21 is sleeved between two support members 11 and mounting members 12. The heat insulation element 21 has a vacuum chamber. Both connectors 22 are disposed in the vacuum chamber, and clearance portions are formed on the connectors 22.
[0049] The above-described heat insulation structure, by setting the heat insulation component 2, includes an integrated heat insulation element 21 and two connecting elements 22. The integrated heat insulation element 21 and the two connecting elements 22 can ensure the airtightness of the vacuum chamber and ensure the smooth progress of the subsequent silver plating and vacuuming process on the inner surface of the vacuum chamber. In this embodiment, the heat insulation element 21 and the connecting elements 22 are a glass jacket and a connecting block, respectively. The heat insulation element 21 is sleeved between the two supporting elements 11 and the mounting element 12, and the vacuum chamber is opened on the heat insulation element 21. The two connecting elements 22 are both set inside the vacuum chamber, and the clearance portion is opened on the connecting element 22. In this way, the connecting elements 22 can ensure that the vacuum chamber is always in a vacuum state, avoiding the situation where the clearance portion is directly opened on the heat insulation element 21, causing outside air to enter the vacuum chamber and making the vacuum chamber not in a vacuum state.
[0050] In one embodiment, such as Figure 2 and Figure 3 As shown, it also includes at least two seals 4, each of which is disposed within a clearance portion and between the radio frequency component 3 and the connector 22 to seal the gap between the radio frequency component 3 and the connector 22.
[0051] The heat insulation structure described above uses a sealing element 4 provided in the relief portion. In this embodiment, the sealing element 4 is a PTFE tube. Specifically, there are two sealing elements 4, each corresponding to one relief portion. The sealing element 4 is specifically located between the radio frequency component 3 and the connector 22, thereby sealing the gap between the radio frequency component 3 and the connector 22. This prevents heat in the placement portion 121 from dissipating to the outside through the gap between the radio frequency component 3 and the connector 22, or prevents external heat from entering the placement portion through the gap.
[0052] In one embodiment, such as Figure 4 As shown, any one of the support members 11 is provided with a support part 112. When the heat insulation component 2 is sleeved between the two support members 11 and the mounting part 12, the two support parts 112 are adapted to abut against one end of the heat insulation component 2 respectively to fix the heat insulation component 2.
[0053] The above-described heat insulation structure, through the support portion 112 provided on the support member 11, which in this embodiment is a support plate, when the heat insulation component 2 is sleeved between the two support members 11 and the mounting member 12, the two support portions 112 can respectively abut against one end of the heat insulation component 2, thereby fixing the heat insulation component 2 between the two support members 11 and the mounting member 12.
[0054] In one embodiment, such as Figure 4 As shown, any support member 11 is provided with a limiting part 113, which is adapted to abut against the side wall of the heat insulation component 2 to limit the heat insulation component 2.
[0055] The above-described heat insulation structure, through the limiting part 113 provided on the support member 11, the limiting part 113 is a limiting plate in this embodiment, the limiting part 113 is vertically arranged with the support member 112, so that when the support member 112 supports the heat insulation component 2, the limiting part 113 can abut against the side wall of the heat insulation component 2, thereby limiting the heat insulation component 2 on the support member 112.
[0056] According to an embodiment of the present invention, another aspect also provides an nuclear magnetic resonance (NMR) probe, such as... Figures 1 to 4 As shown, the above-mentioned heat insulation structure is included. The NMR probe with the above-mentioned structure, by including the aforementioned heat insulation structure, allows the heat insulation component 2 to reduce heat conduction and convection between the hot and cold surfaces of the vacuum cavity when temperature-controlled gas is blown into the placement section 121 from the penetration part 111 to control the temperature of the sample. The silver plating layer suppresses radiative heat transfer between the hot and cold surfaces in the vacuum cavity, effectively preventing heat dissipation from the placement section 121. This also prevents the high or low temperatures within the placement section 121 from affecting the heat of other electronic components and the probe surface. This improves the heat insulation performance of the heat insulation structure. Furthermore, since the heat insulation structure does not have a metal shielding layer, it will not generate eddy currents in the alternating magnetic field, thus preventing poor NMR imaging quality or failure to image. Simultaneously, the heat insulation structure, composed of the support component 1 and the heat insulation component 2, is simple to install and reduces the overall assembly difficulty of the probe.
[0057] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A thermal insulation structure adapted to be installed in a nuclear magnetic probe, characterized in that, The application relates to a support assembly (1) comprising at least two support members (11) and a mounting member (12), the two support members (11) are oppositely arranged, the mounting member (12) is arranged between the two support members (11), and the two ends of the mounting member (12) are connected with the support members (11) respectively, a through portion (111) is formed on any one of the support members (11), a placing portion (121) is formed on the mounting member (12), the placing portion (121) is arranged in communication with the through portion (111), and the placing portion (121) is adapted to place a sample. A heat insulation assembly (2) is arranged between the two support members (11) and the mounting member (12), and the heat insulation assembly (2) has a vacuum cavity, and the inner wall surface of the vacuum cavity is silver-plated. The silver-plated layer on the inner wall surface of the vacuum cavity has a thickness greater than 20 microns.
2. The thermally insulated structure according to claim 1, characterized in that The absolute pressure in the vacuum cavity is less than or equal to 10 -3 Pa.
3. The thermally insulated structure according to claim 2, characterized in that A radio frequency member (3) is arranged around the outer surface of the mounting member (12), and the two ends of the radio frequency member (3) penetrate the heat insulation assembly (2) to be connected with external receiving devices, the radio frequency member (3) is used for emitting radio frequency pulse signals provided by the external receiving devices and receiving nuclear magnetic signals generated by the sample.
4. The thermally insulated structure according to claim 3, characterized in that At least two accommodating portions are formed on the heat insulation assembly (2), the two accommodating portions are arranged in mutual avoidance, and the two ends of the radio frequency member (3) are adapted to penetrate the accommodating portions to be connected with the external receiving devices.
5. The thermally insulated structure according to claim 4, characterized in that The heat insulation assembly (2) comprises an integrated heat insulation member (21) and at least two connecting members (22), the heat insulation member (21) is arranged between the two support members (11) and the mounting member (12), the heat insulation member (21) has the vacuum cavity, the two connecting members (22) are arranged in the vacuum cavity, and the accommodating portions are formed on the connecting members (22).
6. The thermally insulated structure according to claim 5, characterized in that At least two sealing members (4) are arranged in the accommodating portions, and the sealing members (4) are arranged between the radio frequency member (3) and the connecting members (22) to seal the gap between the radio frequency member (3) and the connecting members (22).
7. The thermally insulated structure according to claim 6, characterized in that Any one of the support members (11) is provided with a support portion (112), when the heat insulation assembly (2) is arranged between the two support members (11) and the mounting member (12), the two support portions (112) are adapted to abut against the ends of the heat insulation assembly (2) respectively to fix the heat insulation assembly (2).
8. The thermally insulated structure of claim 1, wherein Any one of the support members (11) is provided with a limiting portion (113) adapted to abut against the side wall of the heat insulation assembly (2) to limit the heat insulation assembly (2).
9. The thermally insulated structure according to claim 8, characterized in that The application further relates to a heat insulation structure comprising the heat insulation structure according to any one of claims 1-9.
10. A nuclear magnetic probe, characterized by