High-strength suspension structure capable of reducing heat transfer
By using a tensioned beam structure that combines multi-ring suspension with Kevlar ropes, the problems of insufficient suspension reliability and axial stiffness were solved, realizing a high-strength suspension for the adiabatic demagnetizing refrigeration machine, and improving experimental accuracy and equipment lifespan.
Patent Information
- Application Number
- CN202520052177.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing suspension methods in adiabatic demagnetizing refrigerators suffer from problems such as insufficient reliability, complex structure, large space occupation, suspension breakage, and insufficient axial stiffness, which affect experimental accuracy and magnet utilization.
The multi-ring suspension structure is combined with Kevlar ropes. The multi-ring suspension is made of PEEK material using 3D printing technology. The top column and adjusting column form a tension beam structure to achieve the tension and fixation of the rope loops. It is combined with the threaded connection of the heat insulation and demagnetizing refrigeration equipment.
It improves the axial stiffness of the suspension, reduces heat sink and deformation, enhances the stability and service life of the suspension, and simplifies the operation process.
Smart Images
Figure CN223726684U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of extremely low temperature refrigeration technology, and specifically relates to a high-strength suspension structure reducing heat transfer. BACKGROUND
[0002] The adiabatic demagnetization refrigerator is a high-end scientific research instrument capable of providing a low-temperature environment close to absolute zero, and is one of the key core devices for modern quantum scientific research and quantum technology development, and its performance is sensitive to external interference. The core components of the adiabatic demagnetization refrigerator are salt pills and magnets. The temperature of the paramagnetic solid decreases with the decrease of the magnetic field during the adiabatic process, and especially in an extremely low-temperature environment, slight temperature fluctuations can have a great impact on experimental results.
[0003] There are two common methods for Kevlar suspension: one is to bond the end of the Kevlar fiber to the suspension fitting with epoxy resin cryogenic adhesive, and then fix the suspension fitting to the salt pill and heat sink or magnetic shield; the other is to wrap the Kevlar fiber around the pulley fitting and use a winch design to tension it. The above two suspension methods, the first is simple but cannot guarantee the reliability of the suspension; the second suspension design is complex, complex to implement and has a large space occupancy; and both of the above two structures need to rely on manual adjustment, which can cause suspension rupture after long-term use.
[0004] Another is to choose a PEEK material with low thermal conductivity for suspension, and use 3D printing technology to form a multi-ring suspension, which can effectively reduce heat leakage, but due to its own multi-ring structure, the axial stiffness of the suspension is greatly reduced, so that the axial deformation of the salt pill after suspension is large, thereby reducing the utilization rate of the magnet.
[0005] Therefore, in view of the above problems, the utility model provides a high-strength suspension structure reducing heat transfer. UTILITY MODEL CONTENTS
[0006] In order to overcome the shortcomings of the prior art, the utility model provides a high-strength suspension structure reducing heat transfer, and the specific technical solutions are as follows:
[0007] A high-strength suspension structure for reducing heat transfer, comprising a multi-ring suspension and four Kevlar ropes; the multi-ring suspension comprises a first ring, a second ring, a third ring, a fourth ring and a fifth ring; the first ring is provided with a plurality of mounting holes at equal intervals in the circumferential direction; the fifth ring is provided with a salt pill fixing hole at the center position; two first fixing columns are radially symmetrically arranged between the second ring and the third ring; two second fixing columns are radially symmetrically arranged between the third ring and the fourth ring; the angle between the line connecting the two first fixing columns and the line connecting the two second fixing columns is 90°; the first fixing column and the second fixing column are the same in structure, the upper part of the first fixing column or the second fixing column is provided with a insertion hole in the axial direction; a threaded hole is provided in the radial direction at the position below the insertion hole of the first fixing column or the second fixing column; the insertion hole is in communication with the threaded hole; an adjusting column is inserted into the insertion hole, and a wiring groove is arranged at the top of the adjusting column; a top column is threadedly connected to the threaded hole; the first ring is symmetrically provided with a first pull rope through hole at the positions corresponding to the left and right sides of each first fixing column; the second ring is symmetrically provided with a second pull rope through hole at the positions corresponding to the left and right sides of each second fixing column; the two ends of two Kevlar ropes are respectively threaded from bottom to top through the first pull rope through holes located at the left and right sides of the same first fixing column, and then pulled to the wiring grooves at the top of the corresponding first fixing column to form a rope loop; the two ends of the other two Kevlar ropes are respectively threaded from bottom to top through the second pull rope through holes located at the left and right sides of the same second fixing column, and then pulled to the wiring grooves at the top of the corresponding second fixing column to form a rope loop.
[0008] Preferably, the top column comprises a cylindrical segment and a wedge-shaped segment, and the end face of the cylindrical segment away from the wedge-shaped segment is provided with a knob.
[0009] Preferably, the surface of the cylindrical segment is provided with external threads matched with the threaded hole.
[0010] Preferably, the multi-ring suspension is made by 3D printing technology.
[0011] Further preferably, the multi-ring suspension is made of PEEK material.
[0012] Further preferably, the thickness of the multi-ring suspension is 2mm.
[0013] Further preferably, the widths of the second ring, the third ring and the fourth ring are all 2mm.
[0014] Further preferably, the diameters of the mounting holes are determined according to the outer diameter of the multi-ring suspension.
[0015] Further preferably, the diameter of the salt pill fixing hole is determined according to the outer diameter of the stud of the salt pill.
[0016] In use, firstly, each Kevlar rope is sequentially connected to form a rope loop; then the wedge-shaped section of the four top columns is inserted into the threaded hole of the corresponding first fixed column or second fixed column, and the adjusting column on the top of each top column is lifted up by rotating the knob, thereby tensioning each Kevlar rope loop; finally, the stud of the salt pill is inserted into the salt pill fixing hole, and is screwed into the threaded hole of the heat insulation demagnetization refrigeration device through the mounting hole, thereby completing the installation and fixation of the salt pill.
[0017] The utility model has the advantages of simple and compact structure, convenient processing, easy operation and good stability.
[0018] The utility model discloses a simple and compact structure, convenient processing, easy operation and good stability, and the combination of the beam string structure formed by the PEEK multi-ring suspension and Kevlar rope utilizes the good thermal and mechanical properties, reduces the heat sink, increases the heat conduction path, enhances the axial stiffness of the suspension, reduces the deformation amount of the suspension caused by suspension, and effectively improves the overall use performance and service life of the suspension. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings constituting the specification of the present application are used to provide further understanding of the present application and do not constitute undue limitations on the present application.
[0020] Figure 1 It is the overall structure schematic view of the utility model;
[0021] Figure 2 It is the top view of the utility model;
[0022] Figure 3 It is the sectional view of the utility model;
[0023] Figure 4 It is the structure schematic view of the top column of the utility model;
[0024] Figure 5 It is the structure schematic view of the adjusting column of the utility model;
[0025] In the drawing, 1 is a multi-ring suspension;101 is a first ring;1011 is a mounting hole;102 is a second ring;103 is a third ring;104 is a fourth ring;105 is a fifth ring;1051 is a salt pill fixing hole;2 is a Kevlar rope;3 is a first fixed column;4 is a top column;401 is a cylindrical section;402 is a wedge-shaped section;403 is a knob;5 is an adjusting column;501 is a wiring groove. DETAILED DESCRIPTION
[0026] The specific implementation of the high-strength suspension structure for reducing heat transfer provided by the utility model is further described in combination with the drawings and examples.
[0027] As Figures 1-3As shown, a high-strength suspension structure for reducing heat transfer includes a multi-ring suspension 1 and four Kevlar ropes 2. The multi-ring suspension 1 includes a first ring 101, a second ring 102, a third ring 103, a fourth ring 104, and a fifth ring 105.
[0028] Preferably, the first ring 101 is provided with a plurality of installation holes 1011 at equal intervals in the circumferential direction, for fixing with an adiabatic demagnetization refrigeration device.
[0029] Preferably, the fifth ring 105 is provided with a salt pill fixing hole 1051 at a central position, for inserting with a salt pill stud.
[0030] Preferably, two first fixing columns 3 are radially symmetrically arranged between the second ring 102 and the third ring 103, and two second fixing columns are radially symmetrically arranged between the third ring 103 and the fourth ring 104. It is worth noting that the line connecting the two first fixing columns 3 and the line connecting the two second fixing columns are arranged at an angle of 90°. This arrangement can effectively ensure the axial stress performance of the multi-ring suspension 1 and reduce the deformation.
[0031] Preferably, the first fixing column 3 and the second fixing column are the same structure. The upper part of the first fixing column 3 or the second fixing column is provided with a insertion hole in the axial direction. A threaded hole is provided in the radial direction below the insertion hole. The bottom of the insertion hole is in communication with the threaded hole. An adjusting column 5 is inserted into the insertion hole. The top of the adjusting column 5 is provided with a wiring groove 501, as shown. Figure 5 The threaded hole is threadedly connected with a top column 4.
[0032] Preferably, the first ring 101 is symmetrically provided with a first pull rope through hole on both sides of each first fixing column 3. The second ring 102 is symmetrically provided with a second pull rope through hole on both sides of each second fixing column. During installation, the two ends of two Kevlar ropes 2 are respectively inserted from bottom to top through the first pull rope through holes on both sides of the same first fixing column 3, and then pulled to the wiring groove 501 of the adjusting column 5 at the top of the corresponding first fixing column, and connected by knotting and gluing to form a rope loop. Then the two ends of the other two Kevlar ropes 2 are respectively inserted from bottom to top through the second pull rope through holes on both sides of the same second fixing column, and then pulled to the wiring groove 501 of the adjusting column 5 at the top of the corresponding second fixing column, and connected by knotting and gluing to form a rope loop.
[0033] As shown, Figure 4As shown, the top column 4 includes a cylindrical segment 401 and a wedge-shaped segment 402, the end face of the wedge-shaped segment 402 is provided with a knob 403, and the outer surface of the cylindrical segment 401 is provided with external threads matched with the threaded hole, so as to adjust the depth of the wedge-shaped segment 402 of the top column 4 inserted into the threaded hole by rotating the knob 403, thereby adjusting the height of the adjusting column 5 above the corresponding top column 4 to eject the insertion hole, and completing the tensioning purpose of the rope ring.
[0034] It is also preferred that the multi-ring suspension 1 is produced by using 3D printing technology and is made of PEEK material with high temperature resistance, wear resistance and low thermal conductivity; the thickness of the multi-ring suspension is 2mm.
[0035] It is further preferred that the widths of the second ring 102, the third ring 103 and the fourth ring 104 are all 2mm.
[0036] It is still further preferred that the diameters of the mounting holes 1011 on the first ring 101 are determined according to the outer diameter size of the multi-ring suspension 1.
[0037] It is still further preferred that the diameters of the salt pill fixing holes 1051 are determined according to the outer diameter size of the threaded hole of the salt pill.
[0038] In specific use, firstly, each Kevlar rope 2 is sequentially connected to form a rope ring; then, the wedge-shaped segment 402 of each of the four top columns 4 is inserted into the threaded hole of the corresponding first fixing column 3 or second fixing column, and the bottom of the adjusting column 5 above each top column 4 is lifted up by rotating the knob 403, thereby tensioning the rope ring of each Kevlar rope 2 and playing the role of tension beam; finally, the threaded hole of the salt pill is inserted into the salt pill fixing hole 1051, and the threaded hole of the heat insulation and demagnetization refrigeration device is screwed with the mounting hole 1011, thereby completing the installation and fixation of the salt pill.
[0039] The utility model discloses a good solution to the situation that the reliability of suspension cannot be guaranteed and manual adjustment is needed when only using Kevlar suspension technology to fix the salt pill, and the suspension will be broken after long-term use; only using multi-ring suspension technology, the axial stiffness of the suspension is greatly reduced due to the multi-ring structure, so that the axial deformation of the salt pill after suspension is large, thereby reducing the utilization rate of the magnet.
[0040] The utility model discloses simple and compact structure, convenient processing, easy operation and good stability, through the combination of the cable-stayed beam structure formed by the PEEK multi-ring suspension and the Kevlar rope, the good thermal and mechanical properties are utilized, the heat sink is reduced, the heat conduction path is increased, the axial stiffness of the suspension is enhanced, the deformation of the suspension due to suspension is reduced, and the overall performance and service life of the suspension are effectively improved.
[0041] In the utility model, the terms such as "upper", "lower", "bottom", "top" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely the relationship words determined for the convenience of describing the structural relationship of the components or elements of the utility model, and are not specific to the components or elements of the utility model, and should not be understood as the limitation of the utility model. The terms such as "connected", "connected" and the like should be understood in a broad sense, which means that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For the relevant scientific research or technical personnel in the field, the specific meaning of the above terms in the utility model can be determined according to the specific circumstances, and should not be understood as the limitation of the utility model.
[0042] Of course, the above description is not a limitation of the utility model, and the utility model is also not limited to the above examples. The changes, modifications, additions or replacements made by the technical personnel in the technical field within the essential scope of the utility model should also belong to the protection scope of the utility model.
Claims
1. A high-strength suspension structure for reducing heat transfer, characterized in that, It includes a multi-ring suspension and four Kevlar ropes; the multi-ring suspension includes a first ring, a second ring, a third ring, a fourth ring and a fifth ring; the first ring has a plurality of mounting holes at equal intervals along the circumference; the fifth ring has a salt pellet fixing hole at its center; Two first fixing posts are radially symmetrically arranged between the second ring and the third ring; two second fixing posts are radially symmetrically arranged between the third ring and the fourth ring; the line connecting the two first fixing posts forms a 90° angle with the line connecting the two second fixing posts. The first and second fixing posts have the same structure. The upper part of the first or second fixing post is provided with an insertion hole along the axial direction. The first or second fixing post is provided with a threaded through hole in the radial direction below the insertion hole. The bottom of the insertion hole is connected to the threaded through hole. An adjusting post is inserted into the insertion hole. A wire groove is provided on the top of the adjusting post. A top post is threadedly connected to the threaded through hole. The first ring has symmetrical first pull rope through holes on both sides of each first fixed post; the second ring has symmetrical second pull rope through holes on both sides of each second fixed post. The two ends of the two Kevlar ropes pass through the first rope through holes located on the left and right sides of the same first fixed post from bottom to top, and then are pulled to the wiring groove at the top of the corresponding first fixed post to connect and form a rope loop; The two ends of the other two Kevlar ropes pass through the second rope through holes located on the left and right sides of the same second fixed post from bottom to top, and then are pulled to the wiring groove at the top of the corresponding second fixed post to form rope loops.
2. The high-strength suspension structure for reducing heat transfer according to claim 1, characterized in that, The top column includes a cylindrical section and a wedge-shaped section, and a knob is provided on the end face of the cylindrical section away from the wedge-shaped section.
3. The high-strength suspension structure for reducing heat transfer according to claim 2, characterized in that, The cylindrical section has an external thread on its surface that matches the threaded through hole.
4. The high-strength suspension structure for reducing heat transfer according to claim 1, characterized in that, The multi-ring suspension is manufactured using 3D printing technology.
5. The high-strength suspension structure for reducing heat transfer according to claim 4, characterized in that, The multi-ring suspension is made of PEEK material.
6. The high-strength suspension structure for reducing heat transfer according to claim 5, characterized in that, The thickness of the multi-ring suspension is 2mm.
7. The high-strength suspension structure for reducing heat transfer according to claim 1, characterized in that, The width of the second, third, and fourth rings is 2 mm.
8. The high-strength suspension structure for reducing heat transfer according to claim 1, characterized in that, The diameter of some of the mounting holes is determined based on the outer diameter of the multi-ring suspension.
9. The high-strength suspension structure for reducing heat transfer according to claim 1, characterized in that, The diameter of the salt pellet fixing hole is determined according to the outer diameter of the salt pellet stud.
10. The high-strength suspension structure for reducing heat transfer according to claim 1, characterized in that, In use, firstly, connect each Kevlar rope sequentially to form a loop; then, insert one end of the wedge-shaped section of each of the four top posts into the threaded through hole of the corresponding first or second fixed post, and lift the bottom of the adjusting post above each top post by turning the knob, thereby tensioning each Kevlar rope loop; finally, insert the stud of the salt pellet into the salt pellet fixing hole, and connect it to the threaded hole of the heat insulation and demagnetizing refrigeration equipment through the mounting hole to complete the installation and fixing of the salt pellet.