CN110994205B - Welding structure applied to end of single-core superconducting cable - Google Patents
Welding structure applied to end of single-core superconducting cable Download PDFInfo
- Publication number
- CN110994205B CN110994205B CN201911364081.2A CN201911364081A CN110994205B CN 110994205 B CN110994205 B CN 110994205B CN 201911364081 A CN201911364081 A CN 201911364081A CN 110994205 B CN110994205 B CN 110994205B
- Authority
- CN
- China
- Prior art keywords
- welding
- superconducting cable
- wall
- sleeve
- head
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/023—Soldered or welded connections between cables or wires and terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/68—Connections to or between superconductive connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
Abstract
The invention provides a welding structure applied to a single-core superconducting cable end, which belongs to the technical field of superconducting cable welding and comprises a welding head and a welding sleeve connected to the outer wall of the welding head, wherein a plurality of axial welding grooves are uniformly formed in the inner wall of the welding sleeve, and a welding space is formed between the inner wall of the welding sleeve and the outer wall of the welding head; one end of the welding head is provided with a binding post, and the other end of the welding head is provided with a blind hole for inserting the superconducting cable; the outer wall of the welding head is of a step structure with the outer diameter sequentially changing; the inner wall of one end of the welding sleeve and the step with the smallest outer diameter in the step structure form the welding space, and the inner wall of the other end of the welding sleeve is connected with the adjacent step of the step with the smallest outer diameter. The invention improves the overall heat transfer efficiency in the process of welding the superconducting cable, reduces the risk in the process of welding the end of the superconducting cable, improves the reliability and the welding speed of welding and improves the use safety of the superconducting cable.
Description
Technical Field
The invention relates to the technical field of superconducting cable welding, in particular to a welding structure applied to a single-core superconducting cable end.
Background
The high-temperature superconducting cable is one of the most competitive modes of the future power transmission technology, and can realize power transmission of large capacity or large current in a short distance with low loss; the traditional power transmission mode can be changed, and electric energy is transmitted in a low-voltage and high-current mode; the occupied area and space can be obviously saved, and precious land resources and urban space are saved; can gradually replace the existing urban underground cable.
The structure of the single-core superconducting cable from inside to outside is a conventional copper wire core, a protective layer, a superconducting conductive layer, a main insulating layer, a shielding layer and an outer protective layer which are used as cable winding frameworks in sequence. The cable end welding structure is a key structure for connecting a superconducting cable and an external conventional power system, and the welding resistance of a superconducting layer must be small, and a superconducting strip material is required to be ensured not to be damaged in the welding process. The existing welding modes are mainly divided into a mode of melting tin or welding a single strip. However, for the superconducting cable with a plurality of strips, the welding time of a single strip welding mode is long, and the damage to the superconducting strips is difficult to avoid. In contrast, the molten tin welding mode is more reasonable.
However, the molten tin welding method also has problems. The external heating device is connected to the welding copper head, and the thermal resistance between the copper head and the copper sleeve is large, so that the temperature difference between the copper head and the copper sleeve is large in the heating process. And the space enclosed between the welding copper head and the welding copper sleeve is extremely small, the superconducting tapes are in a dispersed state in the space, and if the soldering tin is directly inserted into the soldering tin space from the upper part in the heating process, the superconducting tapes are difficult to directly contact the copper head with higher temperature but contact the copper sleeve due to the blocking of the superconducting tapes. This has the consequence that the temperature of the copper head has already risen to a high level, and even the temperature has already begun to damage the superconductive tape and the main insulating material, but the solder has not yet reached its melting point due to the temperature difference.
Disclosure of Invention
The invention aims to provide a welding structure applied to the end of a single-core superconducting cable, which improves the heat transfer efficiency in the welding process of the single-core superconducting cable, so as to solve at least one technical problem in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a welding structure applied to a single-core superconducting cable end, which comprises a welding head and a welding sleeve connected to the outer wall of the welding head, wherein a plurality of axial welding grooves are uniformly formed in the inner wall of the welding sleeve, and a welding space is formed between the inner wall of the welding sleeve and the outer wall of the welding head;
one end of the welding head is provided with a binding post, and the other end of the welding head is provided with a blind hole for inserting the superconducting cable;
the outer wall of the welding head is of a step structure with the outer diameter sequentially changing; the inner wall of one end of the welding sleeve and the step with the smallest outer diameter in the step structure form the welding space, and the inner wall of the other end of the welding sleeve is connected with the adjacent step of the step with the smallest outer diameter.
Preferably, the step structure comprises a first step and a second step, and the outer diameter of the second step is larger than that of the first step.
Preferably, the step structure further comprises a third step, and the outer diameter of the third step is larger than that of the second step.
Preferably, the second step is provided with an external thread, and the inner wall of one end of the welding sleeve is provided with an internal thread corresponding to the external thread; one end of the welding sleeve is in threaded connection with the second step through the matching of the external thread and the internal thread.
Preferably, a circumferential slot for inserting the welding sleeve is formed in the axial end face of the third step.
Preferably, an opening at one end of the blind hole is a horn-shaped opening.
Preferably, the bottom of the blind hole is provided with a conical depression.
Preferably, the number of the welding grooves is 6.
Preferably, the welding head and the welding sleeve are made of a metal material.
Preferably, the weld head is made of copper and the weld nest is made of copper.
The invention has the beneficial effects that: the overall heat transfer efficiency in the process of welding the superconducting cable is improved, the risk in the process of welding the end of the superconducting cable is reduced, the reliability and the welding speed of welding are improved, and the use safety of the superconducting cable is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a cross-sectional structural view of a welding structure applied to a terminal of a single core superconducting cable according to an embodiment of the present invention.
Fig. 2 is a sectional view showing a welding head of the welding structure applied to the end of the single core superconducting cable according to the embodiment of the present invention.
Fig. 3 is a cross-sectional structural view of a welding sheath of a welding structure applied to a terminal of a single core superconducting cable according to an embodiment of the present invention.
Fig. 4 is a front view of a welding sheath of a welding structure applied to a terminal of a single core superconducting cable according to an embodiment of the present invention.
Wherein: 1-welding a head; 2-welding a sleeve; 3-axially welding a groove; 4-a welding space; 5-a binding post; 6-blind holes; 7-a first step; 8-a second step; 9-a third step; 10-a circumferential slot; 11-horn mouth; 12-conical depressions.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by way of the drawings are illustrative only and are not to be construed as limiting the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of this patent, it is noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "disposed" are intended to be inclusive and mean, for example, that they may be fixedly coupled or disposed, or that they may be removably coupled or disposed, or that they may be integrally coupled or disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
For the purpose of facilitating an understanding of the present invention, the present invention will be further explained by way of specific embodiments with reference to the accompanying drawings, which are not intended to limit the present invention.
It should be understood by those skilled in the art that the drawings are merely schematic representations of embodiments and that the elements shown in the drawings are not necessarily required to practice the invention.
Examples
As shown in fig. 1 to 4, an embodiment of the present invention provides a welding structure applied to a single-core superconducting cable end, including a welding head 1 and a welding sleeve 2 connected to an outer wall of the welding head 1, wherein a plurality of axial welding grooves 3 are uniformly formed on an inner wall of the welding sleeve 2, and a welding space 4 is formed between the inner wall of the welding sleeve 2 and the outer wall of the welding head 1;
one end of the welding head 1 is provided with a binding post 5, and the other end of the welding head 1 is provided with a blind hole 6 for inserting a superconducting cable;
the outer wall of the welding head 1 is of a step structure with sequentially changed outer diameters; the inner wall of one end of the welding sleeve 2 and the step with the smallest outer diameter in the step structure form the welding space 4, and the inner wall of the other end of the welding sleeve 2 is connected with the adjacent step of the step with the smallest outer diameter.
The step structure comprises a first step 7 and a second step 8, and the outer diameter of the second step 8 is larger than that of the first step 7.
The step structure further comprises a third step 9, and the outer diameter of the third step 9 is larger than that of the second step 8.
An external thread is arranged on the second step 8, and an internal thread corresponding to the external thread is arranged on the inner wall of one end of the welding sleeve 2; one end of the welding sleeve 2 is in threaded connection with the second step 8 through the matching of the external thread and the internal thread.
And a circumferential slot 10 for inserting the welding sleeve 2 is formed in the axial end face of the third step 9.
An opening at one end of the blind hole 6 is a horn-shaped opening 11.
The bottom of the blind hole 6 is provided with a conical concave part 12.
The number of the axial weld grooves 3 is 6. In practical use, the number of the axial weld grooves 3 is not limited to the above number, and those skilled in the art can specifically set the appropriate number of the axial weld grooves 3 according to practical situations. Any number of axial weld grooves is within the scope of the present invention.
The welding head 1 and the welding sleeve 2 are made of metal materials. For example, the weld head may be made of copper and the weld nest may be made of copper.
As shown in figure 1, one end of the cylindrical welding head is provided with a hollow blind hole, and the edge of the hollow blind hole is provided with a smooth transition chamfer to form a horn-shaped opening. The other end of the cylinder is provided with a flat wiring terminal which is used for connecting with an external current lead. The welding copper sleeve is a thin-wall copper cylinder, and one end of the inner side cylinder wall is provided with a section of internal thread which is used for being connected with the welding copper head. Six soldering tin grooves distributed along the axial direction are arranged on the inner side cylinder wall of the welding copper sleeve. The welding copper head and the welding copper sleeve form a closed space, a soldering tin wire is filled into the space during the welding of the superconducting cable, and then the welding structure is integrally heated to the melting point of the soldering tin through external heating equipment, so that the welding work of the end of the superconducting cable can be realized.
As shown in fig. 2, a hollow blind hole of the copper head is welded, a cable center skeleton is inserted into the hollow blind hole and is subjected to compression joint during the welding of the superconducting cable, and after the compression joint is completed, the outer surface of the first step needs to be polished again to be smooth. One side edge of the cylinder (the first step) with the smaller outer diameter is provided with a smooth transition chamfer so as to prevent the superconducting strip from being damaged due to local stress concentration, and the superconducting strip is guided to the outer surface through the transition chamfer to be laid when the superconducting cable is welded. The connecting position (second step) of the two sections of cylinders with different outer diameters is a section of external thread structure, and a welding copper sleeve and a welding copper head are required to be connected together through the section of external thread when the superconducting cable is welded. The outer surface of the cylinder (the third step) with larger outer diameter is connected with an external heating device to heat the welding structure, and the binding post at the other side is used for being connected with an external current lead.
As shown in fig. 3 and 4, the welded copper sleeve is a thin-walled copper cylinder, and one end of the inner cylinder wall of the welded copper sleeve is provided with a section of internal thread structure. The welding copper bush and the welding copper head are connected into a whole through the matching of the internal thread, the external thread and the external thread. The inner side cylinder wall of the welding copper sleeve is provided with six soldering tin grooves (axial soldering grooves) distributed along the axial direction. When the solder structure begins to heat, solder wires can be added to the enclosed space through the six solder grooves. The solder wire can directly contact the soldering copper head through the solder groove.
In summary, the welding structure applied to the end of the single-core superconducting cable according to the embodiment of the invention improves the overall heat transfer efficiency in the process of welding the superconducting cable, reduces the risk in the process of welding the end of the superconducting cable, improves the reliability and the welding speed of welding, and improves the safety of the superconducting cable.
Those of ordinary skill in the art will understand that: the components in the device in the embodiment of the present invention may be distributed in the device in the embodiment according to the description of the embodiment, or may be correspondingly changed in one or more devices different from the embodiment. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A welding structure applied to a single-core superconducting cable end is characterized in that:
the welding device comprises a welding head (1) and a welding sleeve (2) connected to the outer wall of the welding head (1), wherein a plurality of axial welding grooves (3) are uniformly formed in the inner wall of the welding sleeve (2), and a welding space (4) is formed between the inner wall of the welding sleeve (2) and the outer wall of the welding head (1);
one end of the welding head (1) is provided with a binding post (5), and the other end of the welding head (1) is provided with a blind hole (6) for inserting a superconducting cable;
the outer wall of the welding head (1) is of a step structure with the outer diameter sequentially changing; the inner wall of one end of the welding sleeve (2) and the step with the smallest outer diameter in the step structure form the welding space (4), and the inner wall of the other end of the welding sleeve (2) is connected with the adjacent step of the step with the smallest outer diameter;
the step structure comprises a first step (7) and a second step (8), and the outer diameter of the second step (8) is larger than that of the first step (7);
the step structure further comprises a third step (9), and the outer diameter of the third step (9) is larger than that of the second step (8);
an external thread is arranged on the second step (8), and an internal thread corresponding to the external thread is arranged on the inner wall of one end of the welding sleeve (2); one end of the welding sleeve (2) is in threaded connection with the second step (8) through the matching of the external thread and the internal thread.
2. The welding structure applied to a single-core superconducting cable termination according to claim 1, wherein: and a circumferential slot (10) for inserting the welding sleeve (2) is formed in the axial end face of the third step (9).
3. The welding structure applied to a single-core superconducting cable termination according to claim 2, wherein: an opening at one end of the blind hole (6) is a horn-shaped opening (11).
4. The welding structure applied to a single-core superconducting cable termination according to claim 3, wherein: the bottom of the blind hole (6) is provided with a conical depressed part (12).
5. A welded structure applied to a terminal of a single core superconducting cable according to any one of claims 1 to 4, wherein: the number of the axial welding grooves (3) is 6.
6. The welding structure applied to a single-core superconducting cable termination according to claim 5, wherein: the welding head (1) and the welding sleeve (2) are made of metal materials.
7. The welding structure applied to a single-core superconducting cable termination according to claim 6, wherein: the welding head (1) is made of copper, and the welding sleeve (2) is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364081.2A CN110994205B (en) | 2019-12-26 | 2019-12-26 | Welding structure applied to end of single-core superconducting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364081.2A CN110994205B (en) | 2019-12-26 | 2019-12-26 | Welding structure applied to end of single-core superconducting cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110994205A CN110994205A (en) | 2020-04-10 |
| CN110994205B true CN110994205B (en) | 2021-04-09 |
Family
ID=70077209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911364081.2A Expired - Fee Related CN110994205B (en) | 2019-12-26 | 2019-12-26 | Welding structure applied to end of single-core superconducting cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110994205B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713418B (en) * | 2020-12-16 | 2022-07-12 | 广东电网有限责任公司电力科学研究院 | Superconducting cable joint |
| CN112993609A (en) * | 2021-03-31 | 2021-06-18 | 北京交通大学 | Welding structure of single-core superconducting cable end and using method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204289739U (en) * | 2014-12-01 | 2015-04-22 | 张家港金海港电线电缆有限公司 | A kind of hyperconductive cable piecing devices |
| CN106711653A (en) * | 2017-03-08 | 2017-05-24 | 国网河南省电力公司漯河供电公司 | Laser-welded 2M connector and manufacture method thereof |
| CN108321556A (en) * | 2017-12-11 | 2018-07-24 | 北京交通大学 | The welder of hyperconductive cable connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6658263B2 (en) * | 2016-04-25 | 2020-03-04 | 富士通株式会社 | Board and cable connection board |
-
2019
- 2019-12-26 CN CN201911364081.2A patent/CN110994205B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204289739U (en) * | 2014-12-01 | 2015-04-22 | 张家港金海港电线电缆有限公司 | A kind of hyperconductive cable piecing devices |
| CN106711653A (en) * | 2017-03-08 | 2017-05-24 | 国网河南省电力公司漯河供电公司 | Laser-welded 2M connector and manufacture method thereof |
| CN108321556A (en) * | 2017-12-11 | 2018-07-24 | 北京交通大学 | The welder of hyperconductive cable connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110994205A (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110994205B (en) | Welding structure applied to end of single-core superconducting cable | |
| EP1560293B1 (en) | Superconducting cable joint structure | |
| CN111030032B (en) | Superconducting cable end welding structure | |
| KR101303733B1 (en) | A connection sleeve for a superconductive cable and a connection termination by means of the sleeve | |
| CN100456586C (en) | Joint structure of superconducting cable and insulating spacer for connecting superconducting cable | |
| CN206639641U (en) | A kind of cooling cable system for the high-power charging of electric automobile | |
| CN109741900A (en) | The sub- cable docking superconducting joint of Bi-2212 armored cable and manufacturing method | |
| KR20070053341A (en) | Superconducting cable connection structure | |
| CN208767589U (en) | A kind of device of cable intermediate melt connector | |
| KR101823814B1 (en) | Joint part for superconducting cable and joint structure for superconducting cable | |
| CN112713418B (en) | Superconducting cable joint | |
| US20230386704A1 (en) | Variable-structure stacked cable topology and packaging method therefor | |
| CN113571253B (en) | Multi-slot superconducting cable with improved CORC round core conductor | |
| CN102354766A (en) | Lithium ion battery pack | |
| US11682941B2 (en) | Wiring apparatus for motor and corresponding motor | |
| JP5067725B2 (en) | Superconducting cable terminal connection structure | |
| CN112993609A (en) | Welding structure of single-core superconducting cable end and using method thereof | |
| CN202454441U (en) | Press-fit connecting device for porcelain sleeve wiring terminal and copper stranded wire on capacitor | |
| CN105976920A (en) | Multi-core self-cooling high-strength optical fiber composite cable | |
| CN206962043U (en) | A kind of Experiment of Electronics junction block | |
| CN206194406U (en) | Multicore is from cooling down high strength optical fiber composite cable | |
| CN218997102U (en) | Binding post of copper aluminium composite power cable | |
| CN212114023U (en) | Cable connection structure | |
| CN219780427U (en) | Single-end electrothermal tube | |
| CN113744993B (en) | Winding forming device and method for kA-level large-current-carrying high-temperature superconducting double-pancake coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 Termination date: 20211226 |