CN110212460B - Traction connection device for superconducting cable - Google Patents
Traction connection device for superconducting cable Download PDFInfo
- Publication number
- CN110212460B CN110212460B CN201910556044.5A CN201910556044A CN110212460B CN 110212460 B CN110212460 B CN 110212460B CN 201910556044 A CN201910556044 A CN 201910556044A CN 110212460 B CN110212460 B CN 110212460B
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- superconducting cable
- sleeve
- traction
- flange
- connecting plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/34—Cable fittings for cryogenic cables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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- Superconductors And Manufacturing Methods Therefor (AREA)
- Cable Accessories (AREA)
Abstract
The invention relates to a traction connecting device of a superconducting cable, when the traction connecting device of the superconducting cable is used for connecting the superconducting cable with the traction device, an inner connecting joint is connected with a lining core of the superconducting cable, an outer connecting sleeve is connected with an outer connecting sleeve of the superconducting cable, and when the traction screw is pulled by the traction device, the inner connecting joint and the outer connecting sleeve can synchronously move, so that a vacuum heat insulation protective sleeve and a lining core of the superconducting cable can synchronously move, and the slippage phenomenon between the lining core and the vacuum heat insulation protective sleeve is prevented. It can be seen that a traction connection apparatus for a superconducting cable of the present invention can conveniently pull a superconducting cable to facilitate the laying of the superconducting cable.
Description
Technical Field
The invention relates to a traction connecting device of a superconducting cable, belonging to the technical field of electricians.
Background
As a cable recent technology, a superconducting cable is gradually applied, and when the superconducting cable is laid, a connection device for connecting an external traction force and the cable is required at the end of the cable to pull the cable to advance for laying. Usually, the conventional cable is laid and pulled by using a net cover or a pulling head. The superconducting cable has a structure different from that of a conventional cable, not only is an insulating material, a conductor and the like different, but also has a vacuum heat insulation protective sleeve structure due to the low temperature (liquid nitrogen temperature) of operation, and the vacuum heat insulation protective sleeve and a lining core of the cable can slide. Therefore, the drawing head or the net cover using the conventional cable is not suitable for the superconducting cable, and a connection device suitable for drawing the superconducting cable is not available in the prior art.
Disclosure of Invention
In view of the above-described drawbacks of the prior art, an object of the present invention is to provide a traction connection device for a superconducting cable, which can conveniently pull the superconducting cable for laying.
In order to achieve the purpose, the invention provides a traction connection device of a superconducting cable, which adopts the following technical scheme: a traction connection device of a superconducting cable including a core and a vacuum heat insulation protective sheath fitted outside the core, comprising: the vacuum insulation protective sleeve comprises an outer connecting sleeve for connecting a vacuum insulation protective sleeve and an inner connecting joint for connecting a lining core, wherein the inner connecting joint is arranged in the outer connecting sleeve, a first flange connecting plate is connected to the first end of the outer connecting sleeve, a traction screw rod is connected to the inner connecting joint in a threaded mode and penetrates out of the first flange connecting plate, and a connecting ring used for being connected with a traction device is arranged on the traction screw rod.
Preferably, the second end of the outer connecting sleeve is connected with a second flange connecting plate, and the second flange connecting plate is used for connecting the vacuum heat insulation protective sleeve.
More preferably, a third flange connecting plate is arranged on the vacuum heat insulation protective sleeve and connected with the second flange connecting plate through bolts.
Preferably, the inner connector is provided with a connecting column for connecting with the lining core, and the connecting column and the lining core are connected together through a metal crimping pipe.
More preferably, the vacuum insulation protective sleeve is provided with three lining cores, the inner connector is provided with three connecting columns, and each connecting column is connected with one lining core.
More preferably, a gasket is provided between the end surface of the metal crimping pipe and the end surface of the inner connection joint.
Preferably, a through hole is formed in the first flange plate, the traction screw penetrates out of the through hole to the outer side of the outer connecting sleeve, a sealing ring and a compression nut are sleeved on the traction screw, and the compression nut compresses the sealing ring on the first flange plate to seal the through hole.
More preferably, the packing and the compression nut are located outside the first flange plate.
Preferably, the outer connecting sleeve is a metal bellows.
As described above, the present invention provides a superconducting cable traction connection apparatus, which has the following advantageous effects: when the traction connecting device of the superconducting cable is used for connecting the superconducting cable with the traction device, the inner connector is connected with the lining core of the superconducting cable, the outer connecting sleeve is connected with the outer connecting sleeve of the superconducting cable, and the inner connector and the outer connecting sleeve can synchronously move when the traction screw is pulled by the traction device, so that the vacuum heat-insulation protective sleeve and the lining core of the superconducting cable can synchronously move, and the slippage phenomenon between the lining core and the vacuum heat-insulation protective sleeve is prevented. It can be seen that a traction connection apparatus for a superconducting cable of the present invention can conveniently pull a superconducting cable to facilitate the laying of the superconducting cable.
Drawings
Fig. 1 is a view showing a construction in which a superconducting cable is connected with a traction connection apparatus of a superconducting cable of the present invention.
Fig. 2 is a schematic view of the structure of the interconnector connector viewed from the right side to the left side of fig. 1.
Description of the element reference numerals
1 superconducting cable
2 lining core
3 vacuum heat insulation protective sleeve
4 external connecting sleeve
5 inner connection joint
6 first flange connecting plate
7 traction screw
8 connecting ring
9 second flange connecting plate
10 third flange connecting plate
11 bolt
12 connecting column
13 metal crimping pipe
14 gasket
15 via hole
16 sealing ring
17 compression nut
18 connecting hole
19 screw hole
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, the present invention provides a traction connection device for a superconducting cable, the superconducting cable 1 including an insert core 2 and a vacuum heat insulation protective sheath 3 fitted over the insert core 2, the insert core 2 not being a superconducting conductor of the superconducting cable 1, the traction connection device comprising: the vacuum insulation protective sleeve comprises an outer connecting sleeve 4 and an inner connecting joint 5, wherein the outer connecting sleeve 4 is used for connecting a vacuum insulation protective sleeve 3, the inner connecting joint 5 is used for connecting a lining core 2, the inner connecting joint 5 is arranged in the outer connecting sleeve 4, the first end of the outer connecting sleeve 4 is connected with a first flange connecting plate 6, a traction screw 7 is in threaded connection with the inner connecting joint 5, the traction screw 7 penetrates out of the first flange connecting plate 6, and a connecting ring 8 used for being connected with a traction device is arranged on the traction screw 7.
When the superconducting cable 1 is connected with the traction device by using the traction connection device of the superconducting cable, please refer to fig. 1, the traction device is connected with the connecting ring 8 and draws the superconducting cable 1 to the right, the inner connection joint 5 is connected with the lining core 2 of the superconducting cable 1, the outer connection sleeve 4 is connected with the outer connection sleeve of the superconducting cable 1, and the inner connection joint 5 and the outer connection sleeve 4 can synchronously move when the traction screw 7 is drawn by the traction device, so that the vacuum heat insulation protective sleeve 3 and the lining core 2 of the superconducting cable 1 can synchronously move, and the slippage phenomenon between the lining core 2 and the vacuum heat insulation protective sleeve 3 is prevented. It can be seen that a traction connection apparatus for a superconducting cable of the present invention can conveniently pull a superconducting cable 1 to facilitate laying of the superconducting cable 1.
In the traction connection device for a superconducting cable of the present invention, a first end of the outer connection sleeve 4 is connected to the first flange connecting plate 6, and a second end of the outer connection sleeve 4 is connected to the vacuum heat insulation protection jacket 3, and as a preferred embodiment, a second flange connecting plate 9 is connected to the second end of the outer connection sleeve 4, and the second flange connecting plate 9 is used for connecting the vacuum heat insulation protection jacket 3. Generally, a third flange connection plate 10 is provided on the vacuum insulation jacket 3 of the superconducting cable 1, and the third flange connection plate 10 and the second flange connection plate 9 are connected by bolts 11.
In order to facilitate the connection of the core member 2 of the superconducting cable 1 to the inner joint 5, as a preferred embodiment, as shown in fig. 1, the inner joint 5 is provided with a connection column 12 for connection to the core member 2, and the connection column 12 and the core member 2 are connected to each other by a metal crimping pipe 13. Generally, three core members 2 are provided in a vacuum insulation protective sheath 3 of a superconducting cable 1, and as a preferred embodiment, as shown in fig. 1 and 2, the vacuum insulation protective sheath 3 is provided with three core members 2, the inner joint 5 is provided with three connection columns 12, and each connection column 12 is connected to one core member 2. When the connecting column 12 is connected with the lining core 2 in a compression joint mode, a gap may exist between the metal compression joint pipe 13 and the inner connection joint 5, in order to fill the gap between the metal compression joint pipe 13 and the inner connection joint 5, and enable each lining core 2 to be evenly stressed, as shown in fig. 1, a gasket 14 is arranged between the end face of the metal compression joint pipe 13 and the end face of the inner connection joint 5 to compensate the gap, and the lining cores 2 are guaranteed to be installed compactly and evenly stressed.
In a traction connection device for a superconducting cable according to the present invention, as shown in fig. 1, a traction screw 7 passes through a first flange connection plate 6, a through hole 15 is provided on the first flange connection plate 6, the traction screw 7 passes out of the through hole 15 to the outside of an outer connection sleeve 4, the superconducting cable 1 is often pulled by the traction device in an outdoor environment, foreign objects such as external moisture may enter the outer connection sleeve 4 through a gap between the through hole 15 and the traction screw 7 and enter a vacuum insulation protection jacket 3 of the superconducting cable 1 to affect the performance of the superconducting cable 1, and in order to prevent the external foreign objects and moisture from entering the superconducting cable 1, a sealing ring 16 and a compression nut 17 are sleeved on the traction screw 7, and the compression nut 17 compresses the sealing ring 16 against the first flange connection plate 6 to seal the through hole 15. Thus, external moisture and foreign matters are hard to enter the vacuum insulation protective jacket 3 from the through hole 15 of the first flange connection plate 6, and the performance of the superconducting cable 1 is affected. For ease of installation, the sealing ring 16 and the compression nut 17 are preferably located on the outside of the first flange plate 6. In order to better seal the through hole 15, a sealant can be used for sealing between the through hole 15 and the traction screw 7.
In a traction connection device for a superconducting cable of the present invention, an outer connection sleeve 4 is connected to a vacuum heat insulation jacket 3 of a superconducting cable 1, an inner connection joint 5 is connected to a core liner 2 of the superconducting cable 1, the distance between the end face of the vacuum insulation protective sheath and the end face of the core 2 is generally different for different superconducting cables 1, therefore, when pulling different superconducting cables 1, the distance between the end face of the second flange connecting plate 9 and the end face of the connection post 12 also needs to be adjusted, in order to facilitate the adjustment of the distance between the end surface of the second flange connecting plate 9 and the end surface of the connecting column 12, the outer connecting sleeve 4 is a metal corrugated pipe, this ensures that the outer joint sleeve 4 can withstand sufficient traction and also facilitates adjustment of the distance between the end face of the second flange connection plate 9 and the end face of the connection column 12 to accommodate different superconducting cables 1. The metal corrugated pipe and the second connecting plate are generally connected in a welding mode, metal armor can be coated outside the metal corrugated pipe, and the metal armor can be in a weaving or lapping mode.
As shown in figure 1, one end of the connecting column 12 is provided with a head part with a larger diameter, the connecting column 12 can freely pass through a connecting hole 18 on the inner connector 5, the other end of the connecting column 12 is provided with a screw thread, one end of the connecting column 12 with the screw thread is connected with the metal crimping pipe 13 in a screw thread mode, and the other end of the metal crimping pipe 13 is crimped with the lining core 2.
Referring to fig. 1, when a traction connection apparatus for a superconducting cable of the present invention is connected to a superconducting cable 1, a connection column 12 is first inserted into a connection hole 18 of an inner connector 5, then the end of the connection column 12 is connected with the metal crimping pipe 13, and the metal crimping pipe 13 is crimped with the core 2 of the superconducting cable 1, then the left end of the outer connecting sleeve 4 is sleeved on the inner connector 5 and the outer side of the lining core 2 of the superconducting cable 1 to the left, the second flange connecting plate 9 at the left end of the outer connecting sleeve 4 is connected with the third flange connecting plate 10 on the superconducting cable 1, then the left end of the traction screw 7 passes through the sealing ring 16, the compression nut 17 and the through hole 15 on the first flange connecting plate 6 and is screwed into the threaded hole 19 of the internal connection joint 5, and the compression nut 17 is screwed down and compresses the sealing ring 16, and the superconducting cable 1 is connected to the connecting ring 8 by a traction device and is pulled towards the right.
When the traction connecting device of the superconducting cable pulls the superconducting cable, the pulling force applied by the traction device acts on the three lining cores of the superconducting cable, so that the stress of a superconducting conductor layer is avoided, and the loss of the performance of a superconducting material possibly caused by the stress of the superconducting conductor is avoided. Meanwhile, partial pulling force acts on the heat insulation vacuum protective sleeve of the superconducting cable through the outer connecting sleeve, so that the cable lining core and the vacuum heat insulation protective sleeve can be pulled to move together by the traction device.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (3)
1. A pulling connection device of a superconducting cable, the superconducting cable (1) comprising a lining core (2) and a vacuum heat insulation protection jacket (3) sleeved outside the lining core (2), the pulling connection device comprising:
the vacuum insulation protective sleeve comprises an outer connecting sleeve (4) used for connecting a vacuum insulation protective sleeve (3) and an inner connecting joint (5) used for connecting a lining core (2), wherein the inner connecting joint (5) is arranged in the outer connecting sleeve (4), the first end of the outer connecting sleeve (4) is connected with a first flange connecting plate (6), a traction screw (7) is in threaded connection with the inner connecting joint (5), the traction screw (7) penetrates out of the first flange connecting plate (6), and a connecting ring (8) used for being connected with a traction device is arranged on the traction screw (7);
the second end of the outer connecting sleeve (4) is connected with a second flange connecting plate (9), and the second flange connecting plate (9) is used for connecting the vacuum heat-insulation protective sleeve (3); a third flange connecting plate (10) is arranged on the vacuum heat insulation protective sleeve (3), and the third flange connecting plate (10) is connected with the second flange connecting plate (9) through a bolt (11); the inner connector (5) is provided with a connecting column (12) for connecting with the lining core (2), and the connecting column (12) and the lining core (2) are connected together through a metal crimping pipe (13);
the outer connecting sleeve (4) is a metal corrugated pipe so as to adjust the distance between the end face of the second flange connecting plate (9) and the end face of the connecting column (12) when different superconducting cables (1) are pulled;
a through hole (15) is formed in the first flange connecting plate (6), the traction screw (7) penetrates out of the through hole (15) to the outer side of the outer connecting sleeve (4), a sealing ring (16) and a compression nut (17) are sleeved on the traction screw (7), and the compression nut (17) compresses the sealing ring (16) on the first flange connecting plate (6) to seal the through hole (15); the sealing ring (16) and the compression nut (17) are positioned on the outer side of the first flange connecting plate (6).
2. The superconducting cable pulling connection device according to claim 1, wherein: the vacuum heat insulation protective sleeve (3) is internally provided with three lining cores (2), the inner connector (5) is provided with three connecting columns (12), and each connecting column (12) is connected with one lining core (2).
3. The superconducting cable pulling connection device according to claim 1, wherein: and a gasket (14) is arranged between the end surface of the metal crimping pipe (13) and the end surface of the inner connecting joint (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910556044.5A CN110212460B (en) | 2019-06-25 | 2019-06-25 | Traction connection device for superconducting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910556044.5A CN110212460B (en) | 2019-06-25 | 2019-06-25 | Traction connection device for superconducting cable |
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| Publication Number | Publication Date |
|---|---|
| CN110212460A CN110212460A (en) | 2019-09-06 |
| CN110212460B true CN110212460B (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910556044.5A Active CN110212460B (en) | 2019-06-25 | 2019-06-25 | Traction connection device for superconducting cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113492243B (en) * | 2020-03-20 | 2024-07-16 | 上海朗仕电子设备有限公司 | External power supply device for vacuum reflow oven |
| CN113315083B (en) * | 2021-07-29 | 2021-11-26 | 华海通信技术有限公司 | Protection device and submarine cable system of submarine cable tail end |
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| JP2009124855A (en) * | 2007-11-14 | 2009-06-04 | Sumitomo Electric Ind Ltd | End structure of superconducting cable |
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| JP2011229296A (en) * | 2010-04-20 | 2011-11-10 | Sumitomo Electric Ind Ltd | End structure for superconducting cable |
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| CN110212460A (en) | 2019-09-06 |
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