CN216389743U - Superconducting cable current end - Google Patents
Superconducting cable current end Download PDFInfo
- Publication number
- CN216389743U CN216389743U CN202122298756.7U CN202122298756U CN216389743U CN 216389743 U CN216389743 U CN 216389743U CN 202122298756 U CN202122298756 U CN 202122298756U CN 216389743 U CN216389743 U CN 216389743U
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- superconducting cable
- taper sleeve
- chamfer
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
A superconducting cable current termination comprising: the end body, for the columnar conductor, include the portion of continuing in proper order along the axis, crimping portion and weld part, the portion of continuing is used for being connected with the current lead of butt joint cable, the end body includes the first mounting hole that corresponds with crimping portion, the second mounting hole that corresponds with the weld part, the copper supporter penetrates to in the first mounting hole, the second mounting hole is for following the axis to the toper of crimping portion direction diameter crescent, it pours the hole to be provided with soldering tin on the weld part, and be provided with radial ejector pin screw taper sleeve at the major diameter end of weld part inner wall, the copper supporter periphery of superconductive cable is located to the cover, superconductive tape material arranges the periphery in the taper sleeve, the periphery of taper sleeve is the toper, its major diameter end has the chamfer, the position of chamfer corresponds in the footpath with the position of ejector pin screw, the ejector pin, screw in the ejector pin screw, its tip contacts with the chamfer. The current end realizes welding and pressing, eliminates air bubbles in soldering tin, and reduces the thickness of the soldering tin between the superconducting strip and the current end.
Description
Technical Field
The utility model relates to the technical field of superconducting cables, in particular to a current end of a superconducting cable.
Background
When the superconducting cable needs to be electrified to operate, the superconducting cable needs to be firstly butted with a butting cable, so that the operation environment is changed from low temperature to normal temperature. The butt joint is realized by welding in a terminal container generally, and the connection between one end of the current end with a special structure and the superconducting strip and the connection between the other end of the current end with a butt joint cable are realized at present. The existing butt joint process of the superconducting strip and the current end is completed by heating and welding low-temperature silver-containing soldering tin, so that the welding quality of a joint is ensured, the current end and a copper support body of a superconducting cable are effectively fixed, and the loss of tin in the welding process is prevented.
In order to minimize the welding resistance of the superconducting strip and the current end, the small thickness of soldering tin between the superconducting strip and the current end and the uniform bubble-free gap are required to be ensured, if certain pressure is applied while welding in the welding process, the effect can be achieved, the conventional method is that one end of the current end is sleeved on the superconducting strip to be directly heated and welded, the other end of the current end is connected with a butt cable, so that the pressure applied to the superconducting strip is blocked, the soldering tin is large in thickness and has bubbles, and the welding resistance of the superconducting strip and the current end cannot be effectively reduced.
The current end adopts a split type, one part is welded with the superconducting strip and applies pressing force, and the other part is fixed with the copper support body of the superconducting cable in a compression joint mode. If the superconducting strip is placed outside the current terminal to implement a compaction structure, the molten soldering tin is difficult to completely seal and flow around, and the welding effect is inevitably not ideal.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention discloses a current termination of a superconducting cable, comprising:
the end head body is a columnar conductor and sequentially comprises a connection part, a pressing part and a welding part along an axis, wherein the connection part is used for being connected with a current lead of a butt cable, the pressing part and the welding part are provided with coaxial mounting holes along the axis, the mounting holes are used for penetrating a copper support body and a superconducting strip of the superconducting cable,
the mounting holes comprise a first mounting hole corresponding to the crimping part and a second mounting hole corresponding to the welding part, the copper support body penetrates into the first mounting hole, the second mounting hole is in a conical shape with the diameter gradually increasing towards the crimping part along the axis, a soldering tin pouring hole is formed in the welding part, and a radial ejector rod screw hole is formed in the large-diameter end of the inner wall of the welding part;
the taper sleeve is sleeved on the periphery of a copper supporting body of the superconducting cable, the superconducting tape is arranged on the periphery of the taper sleeve, the periphery of the taper sleeve is conical, a large-diameter end of the taper sleeve is provided with a chamfer, and the position of the chamfer corresponds to the position of a screw hole of the ejector rod in the radial direction;
and the ejector rod is screwed into the ejector rod screw hole, and the end part of the ejector rod is contacted with the chamfer.
Optionally, the diameter of the first mounting hole is the same as that of the copper support body of the superconducting cable, and the diameter of the second mounting hole gradually increases along the axis toward the crimping part until the diameter is larger than that of the first mounting hole, so that an annular boss is formed at the junction of the first mounting hole and the second mounting hole, and the diameter of the end face of the chamfer is larger than that of the first mounting hole.
Optionally, the joint has a longitudinal section parallel to the axis and has a connection screw hole penetrating through the joint perpendicular to the longitudinal section for connection with a mating cable lead.
Optionally, the end of the ejector rod is a conical surface, and the end of the ejector rod is consistent with the chamfering taper of the taper sleeve.
Optionally, the taper of the outer periphery of the taper sleeve is consistent with the taper of the inner wall of the welding part.
Optionally, the terminal body is integrally formed.
Optionally, the solder pouring hole is bar-shaped along an axial direction.
The current end of the superconducting cable drives the taper sleeve to move axially through the ejector rod, certain pressure can be applied while welding in the welding process, air bubbles in soldering tin are removed, the thickness of the soldering tin between the superconducting strip and the current end is reduced, and therefore the purposes of fully welding the superconducting strip joint and reducing the resistance of the joint are achieved.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a perspective view of a current terminal of a superconducting cable according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a drogue 2 illustrating an embodiment of the present invention;
fig. 3 is a cross-sectional view showing a current terminal of a superconducting cable according to an embodiment of the present invention;
fig. 4 is a schematic view showing a superconducting cable current terminal connection superconducting cable according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
As shown in fig. 1, the current termination of the superconducting cable of the present embodiment includes a terminal body 1, a taper sleeve 2, and a mandrel 3. The terminal body 1 includes a connection portion 11, a press-connection portion 12 and a welding portion 13 which are integrally formed and electrically connected in sequence, and is formed into a cylindrical body form, wherein the connection portion 11 is used for being connected with a current lead of a butt cable.
As shown in fig. 3, the crimping part 12 and the welding part 13 are hollow, have coaxial mounting holes in the axial direction, and are used for inserting the copper support 101 and the superconducting tape 102 of the superconducting cable. Specifically, the crimping part 12 has a first mounting hole 121 in the axial direction, and the diameter of the first mounting hole 121 is the same as that of the superconducting cable copper support body 101 for effective crimping with the superconducting cable copper support body 101. The welding part 13 has a second mounting hole 131 coaxially communicating with the first mounting hole 121 in the axial direction, and the second mounting hole 131 gradually increases in diameter in the direction of the crimping part 12 along the axis to be larger than the first mounting hole 121, thereby forming an annular boss at the boundary of the first mounting hole 121 and the second mounting hole 131.
As shown in fig. 2, the outer wall of the taper sleeve 2 is tapered, one end of the taper sleeve 2 has a chamfer 21, and the outer wall of the taper sleeve 2 is formed in a form in which the outer diameter gradually decreases from the end having the chamfer 21 to the other end, in conformity with the taper of the second mounting hole 131 of the welding portion 13. And the position of the chamfer 21 of the taper sleeve 2 corresponds to the position of the jack screw hole 133 in the radial direction.
The soldering portion 13 is provided with a solder pouring hole 132 and a ram screw hole 133 in the radial direction. The solder pouring hole 132 is used for pouring solder into the welding portion 13 at the time of welding. The jack screw hole 133 is a threaded hole, and the end of the jack 3 can be moved in the radial direction by screwing the jack 3 into the jack screw hole 133.
Before the superconducting cable 100 and the current terminal are welded, the taper sleeve 2 is firstly sleeved on the superconducting cable copper support body 101, the superconducting strip 102 is arranged on the outer wall of the taper sleeve 2, and then the taper sleeve 2 is placed into the current terminal, so that the superconducting cable copper support body 101 enters the crimping part 12 until the end part of the superconducting cable copper support body 101 is propped against the inner end of the first mounting hole 121, certainly, the end part of the superconducting cable copper support body does not need to be propped against the inner end of the first mounting hole 121, and the taper sleeve 2 is positioned at the second mounting hole 131, so that the chamfer 21 of the taper sleeve 2 is just positioned at the ejector rod screw hole 133. The end of the taper sleeve 2 may be used to locate against the annular boss with the superconducting tape 102 between the taper sleeve 2 and the weld 13. When the superconducting tape is welded, the ejector rod 3 is slightly screwed, the lower end face of the ejector rod is propped against the chamfer 21 of the taper sleeve 2, the radial thrust is converted into the axial thrust through the taper sleeve 2, as shown in fig. 4, the taper sleeve 2 is enabled to move by a distance L along the axial direction through the axial thrust of the ejector rod 3, the moving distance L is used for exerting an extrusion force on the superconducting tape 102, the extrusion force can be used for micro-adjusting the gap where the superconducting tape is located, and therefore the purposes of removing bubbles, reducing the thickness of a welding tin layer and finally reducing welding resistance are achieved.
Further, the connection portion 11 has a longitudinal section parallel to the axis, and has a connection screw hole 111 penetrating the connection portion 11 perpendicular to the longitudinal section, the connection screw hole 111 being for connection with a lead wire of a mating cable.
Furthermore, the end part of the ejector rod 3 is a conical surface, the conical surface is consistent with the chamfer angle taper of the taper sleeve 2, and the end part of the ejector rod 3 is attached to the chamfer angle of the taper sleeve 2 through the inclination, so that the axial movement of the taper sleeve 2 can be driven more reliably
Further, the solder pouring hole 132 has a bar shape along an axial direction.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A superconducting cable current termination, comprising:
the end head body is a columnar conductor and sequentially comprises a connection part, a pressing part and a welding part along an axis, wherein the connection part is used for being connected with a current lead of a butt cable, the pressing part and the welding part are provided with coaxial mounting holes along the axis, the mounting holes are used for penetrating a copper support body and a superconducting strip of the superconducting cable,
the mounting holes comprise a first mounting hole corresponding to the crimping part and a second mounting hole corresponding to the welding part, the copper support body penetrates into the first mounting hole, the second mounting hole is in a conical shape with the diameter gradually increasing towards the crimping part along the axis, a soldering tin pouring hole is formed in the welding part, and a radial ejector rod screw hole is formed in the large-diameter end of the inner wall of the welding part;
the taper sleeve is sleeved on the periphery of a copper supporting body of the superconducting cable, the superconducting tape is arranged on the periphery of the taper sleeve, the periphery of the taper sleeve is conical, a large-diameter end of the taper sleeve is provided with a chamfer, and the position of the chamfer corresponds to the position of a screw hole of the ejector rod in the radial direction;
and the ejector rod is screwed into the ejector rod screw hole, and the end part of the ejector rod is contacted with the chamfer.
2. A superconducting cable current termination according to claim 1, wherein the diameter of the first mounting hole is the same as the diameter of the copper support body of the superconducting cable, and the diameter of the second mounting hole is gradually increased to be larger than the diameter of the first mounting hole in the direction of the crimping portion along the axis, so that an annular projection is formed at the intersection of the first mounting hole and the second mounting hole, and the diameter of the end surface of the chamfer is larger than the diameter of the first mounting hole.
3. The superconducting cable current termination of claim 1,
the connecting part is provided with a longitudinal section parallel to the axis and a connecting screw hole which penetrates through the connecting part and is perpendicular to the longitudinal section, and the connecting screw hole is used for being connected with a lead of a butt cable.
4. The superconducting cable current termination of claim 1,
the end part of the ejector rod is a conical surface, and the conical degree of the ejector rod is consistent with that of the chamfer of the taper sleeve.
5. The superconducting cable current termination of claim 1,
the taper of the periphery of the taper sleeve is consistent with the taper of the inner wall of the welding part.
6. The superconducting cable current termination of claim 1,
the end head body is integrally formed.
7. The superconducting cable current termination of claim 1,
the soldering tin pouring hole is in a strip shape along the axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122298756.7U CN216389743U (en) | 2021-09-18 | 2021-09-18 | Superconducting cable current end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122298756.7U CN216389743U (en) | 2021-09-18 | 2021-09-18 | Superconducting cable current end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216389743U true CN216389743U (en) | 2022-04-26 |
Family
ID=81241669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122298756.7U Active CN216389743U (en) | 2021-09-18 | 2021-09-18 | Superconducting cable current end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216389743U (en) |
-
2021
- 2021-09-18 CN CN202122298756.7U patent/CN216389743U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216389743U (en) | Superconducting cable current end | |
| CN108847622A (en) | It is a kind of for the auxiliary mould of cable accessory sealing lead and the sealing lead method of cable accessory | |
| CN107900504B (en) | Fuel rod pressure resistance welding chuck | |
| US4855574A (en) | Welding sleeve with connecting means having an upper and lower part | |
| CN111326873A (en) | Electric energy transmission joint and preparation method thereof | |
| CN103192173A (en) | Tip contact type parallel electrode welding head | |
| CN102528255A (en) | V-shaped face copper and aluminium welding processing technique and welding connector used for power cables | |
| CN214849121U (en) | Terminal convenient to installation wiring | |
| CN113161770A (en) | External conductive cable connector | |
| CN201732689U (en) | Line-outgoing terminal wiring structure of high-voltage power capacitor unit | |
| CN111211460B (en) | Electric connection method and connection device for high-voltage equipment lead and metal inner barrel | |
| CN209150328U (en) | A kind of cable connecting terminal and a kind of cable | |
| US20220266368A1 (en) | Tapered micro-electronic micro-connection deep-cavity welding capillary | |
| CN211126365U (en) | SMA type radio frequency coaxial connector | |
| CN218827989U (en) | Novel structure radio frequency coaxial connector | |
| US4151392A (en) | Method of manufacturing electrical connector | |
| CN214673003U (en) | External conductive cable connector | |
| CN206340765U (en) | A kind of semi-rigid cable connector | |
| CN217790032U (en) | Auxiliary assembly fixture for radio frequency coaxial load | |
| CN217944238U (en) | Automobile wire extrusion die | |
| CN220761331U (en) | Die sleeve resistance welding clamp of coaxial laser assembly | |
| CN109203410A (en) | A kind of extrusion processing mold that automobile electric wire peeling force can be improved | |
| CN211862805U (en) | impedance-pH electrode catheter | |
| CN215787408U (en) | Positioning core rod for welding joint | |
| CN213878635U (en) | SMA connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |