A method for preparing a split flexible thermal connector for superconducting

Abstract

The present invention discloses a method for preparing a split flexible thermal connector for superconducting, which is characterized in that it includes the following molding steps: 1) making a plurality of copper strands from TU0 copper wires of a certain single wire diameter; 2) preparing a plurality of copper sleeves, and processing a ring groove on the inner wall of the sleeve port of the copper sleeve by CNC lathe; 3) evenly arranging and fixing the plurality of copper strands with a wire arrangement tool to form two or more layers of copper strands arranged side by side, and at the same time, reserving the length of sleeves at both ends of the copper strands; 4) breaking up and straightening the wires of the reserved sleeves at both ends of the copper strands, and then inserting one end of the two or more layers of copper strands arranged side by side into the same copper sleeve, and the other ends are respectively inserted into the copper sleeves; 5) performing interference cold pressing on the copper sleeve; 6) heat treating the interference cold pressed copper sleeve by vacuum welding technology; 7) milling a connection hole on the copper sleeve, and fine machining the surface of the hardened area of ​​the copper sleeve. The present invention effectively solves the problem of dispersing energy to multiple devices in a limited space.

Description

Technical Field

[0001] The present invention relates to an improved invention of a heat exchange connector, and in particular to an improved invention of a preparation method of a split flexible heat connector for superconducting. Background Art

[0002] The connection between the GM cold head and the magnetic resonance system needs to transfer heat between two or more locations and provide variable displacement in the event of shock, vibration, mechanical function and thermal expansion or contraction, so a flexible connection is needed here to absorb vibration. Cryostats and cryocoolers are closely related to events such as daily shock and vibration profiles associated with equipment operation, and they can be paired with vibration isolation systems and cold heads to provide additional attenuation, heat transfer and mechanical decoupling.

[0003] In order to successfully use the GM cold head to cool the superconducting magnet, it is very necessary to establish an effective thermal connection between the GM cold head and the superconducting magnet, so as to maximize the thermal conductivity between the GM cold head and the superconducting magnet. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a method for preparing a split flexible thermal connector for superconducting.

[0005] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions: the preparation method of the split flexible thermal connector for superconducting is characterized by comprising the following molding steps:

[0006] 1) Make a number of copper strands from TU0 copper wires with a certain single wire diameter;

[0007] 2) Prepare several copper sleeves, and process them on a CNC lathe to form an annular groove on the inner wall of the insertion port of the copper sleeve;

[0008] 3) Use a cable arrangement tool to evenly arrange and fix several copper strands to form two or more layers of copper strands in parallel, and reserve sleeve lengths at both ends of the copper strands;

[0009] 4) Unravel and straighten the reserved sleeves at both ends of the copper stranded wires, and then put one end of the two or more layers of copper stranded wires into the same copper sleeve, and the other ends into copper sleeves respectively;

[0010] 5) Use hydraulic equipment to perform interference cold pressing on the copper sleeve, press the copper sleeve into a flat shape, and seamlessly press and straighten the two ends of the copper stranded wire;

[0011] 6) Use vacuum welding technology to heat treat the interference cold pressed copper sleeve to eliminate the crimping stress and gap;

[0012] 7) Through CNC lathe processing, the connection holes are milled on the copper sleeve, and the surface of the hardened area of ​​the copper sleeve is finely processed.

[0013] The annular groove and the inner wall of the copper sleeve are transitioned through a 45-degree slope.

[0014] The outer end angle and the inner end angle of the insertion port of the copper sleeve are both processed into rounded corners.

[0015] The single wire diameter of the TU0 copper wire is 0.05-0.15 mm.

[0016] The beneficial effect of the present invention is an improved method for preparing a split flexible thermal connector for superconductors. The thermal connector can transfer heat from one end to multiple ends, is flexible, has a flat product, has a small amount of deformation, and improves the yield rate. It effectively solves the problem of needing to disperse energy to multiple devices in a limited space, and can meet the requirements of high thermal conductivity and lightweight for aerospace and portable electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic structural diagram of the flexible connector of the present invention.

[0019] Figure 2 It is a structural side view of the flexible connector of the present invention.

[0020] Figure 3 It is a structural cross-sectional view of the copper sleeve of the present invention. DETAILED DESCRIPTION

[0021] The accompanying drawings show the structure of the present invention, and the relevant details thereof are further described below in conjunction with the accompanying drawings. In this embodiment, the preparation method of the split flexible thermal connector for superconducting includes the following molding steps:

[0022] 1) TU0 copper wire with a certain single wire diameter is made into a plurality of copper strands 2, preferably the single wire diameter of the TU0 copper wire is 0.05-0.15 mm, and the cross-sectional area of ​​the copper strands 2 is determined by the thermal conductivity of the thermal connector;

[0023] 2) Prepare a number of copper sleeves 1, design the wall thickness, inner diameter, outer diameter and other dimensions of the copper sleeves 1 according to the actual heat conduction area requirements of the product, and process an annular groove 11 on the inner wall of the insertion port of the copper sleeve 1 through a CNC lathe;

[0024] 3) Several copper strands 2 are evenly arranged and fixed using a wire arrangement tool to form two or more layers of copper strands 2 arranged side by side, and at the same time, sleeve lengths are reserved at both ends of the copper strands 2;

[0025] 4) Unravel and straighten the reserved sleeves at both ends of the copper stranded wire 2, and then put one end of the two or more layers of copper stranded wires 2 into the same copper sleeve 1, and the other ends are respectively put into the copper sleeve 1;

[0026] 5) Use 500-ton hydraulic equipment to perform interference cold pressing on the copper sleeve 1, press the copper sleeve 1 into a flat shape, and seamlessly press the two ends of the loosened and straightened copper strands 2;

[0027] 6) Using vacuum welding technology to heat treat the interference cold pressed copper sleeve 1 to eliminate the crimping stress and gap;

[0028] 7) The connection hole 3 is milled on the copper sleeve 1 through CNC lathe processing. The milling process ensures the flatness and the surface of the hardened area of ​​the copper sleeve 1 is finely processed. The fine processing includes conventional processes such as deburring and grinding to ensure flatness and roughness.

[0029] As a further improved specific implementation, the annular groove 4 and the inner wall of the copper sleeve 1 are transitioned through a 45-degree slope 5; the outer end angle and the inner end angle of the insertion port of the copper sleeve 1 are both processed into rounded corners. The setting of the annular groove 4 can effectively prevent the copper sleeve 1 from being damaged by interference cold pressing and affecting the uniform arrangement of the copper strands 2, and the setting of the 45-degree slope and rounded corners further reduces the impact on the copper strands 2.

[0030] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a split flexible thermal connector for superconducting, characterized in that: The molding process includes the following steps: 1) Make a number of copper strands from TU0 copper wires with a certain single wire diameter; 2) Prepare several copper sleeves, and process them on a CNC lathe to form an annular groove on the inner wall of the sleeve insertion port of the copper sleeve; 3) Use a cable arrangement tool to evenly arrange and fix several copper strands to form two or more layers of copper strands in parallel, and reserve sleeve lengths at both ends of the copper strands; 4) Unravel and straighten the reserved sleeves at both ends of the copper stranded wires, then put one end of the copper stranded wires of two or more layers into the same copper sleeve, and the other ends into copper sleeves respectively; 5) Use hydraulic equipment to perform interference cold pressing on the copper sleeve, press the copper sleeve into a flat shape, and seamlessly press and loosen the two ends of the straightened copper strands; 6) Use vacuum welding technology to heat treat the interference cold pressed copper sleeve to eliminate the crimping stress and gap; 7) Through CNC lathe processing, the connection holes are milled on the copper sleeve, and the surface of the hardened area of ​​the copper sleeve is finely processed.

2. The method for preparing the split flexible thermal connector for superconducting according to claim 1, characterized in that: The annular groove and the inner wall of the copper sleeve are transitioned through a 45-degree slope.

3. The method for preparing the split flexible thermal connector for superconducting according to claim 1, characterized in that: The outer end angle and the inner end angle of the insertion port of the copper sleeve are both processed into rounded corners.

4. The method for preparing the split flexible thermal connector for superconducting according to claim 1, characterized in that: The single wire diameter of the TU0 copper wire is 0.05-0.15 mm.

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