CN112688269A - Multifunctional plugging connector special for oil-filled submarine cable - Google Patents
Multifunctional plugging connector special for oil-filled submarine cable Download PDFInfo
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- CN112688269A CN112688269A CN202011323241.1A CN202011323241A CN112688269A CN 112688269 A CN112688269 A CN 112688269A CN 202011323241 A CN202011323241 A CN 202011323241A CN 112688269 A CN112688269 A CN 112688269A
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- oil
- sleeve
- chassis
- submarine cable
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Abstract
The invention discloses a multifunctional plugging joint special for an oil-filled submarine cable, which comprises an inner plug and an outer plug; the inner plug comprises a chassis and a positioning shaft arranged in the center of the chassis, a first through hole is formed in the centers of the chassis and the positioning shaft, and an internal thread is formed in one end, located on the chassis, of the first through hole; the outer plug comprises a sleeve and a self-sealing joint, one end of the sleeve is open, the other end of the sleeve is closed, a second through hole is formed in the center of the closed end of the sleeve, the self-sealing joint is fixed in the center of the closed end of the sleeve, and the inner flow passage is connected with the second through hole. The multifunctional plugging joint integrates plugging, connection and oil supply functions, is suitable for related work such as laying, installation, maintenance and connection of oil-filled submarine cables, electrical tests and the like, has strong universality, usability and practicability, not only reduces the difficulty of the installation operation of the plugging joint, but also greatly saves spare part resources, and has important significance for improving the quality and efficiency of manufacturing the underwater cable connection joint.
Description
Technical Field
The invention relates to a multifunctional plugging joint special for an oil-filled submarine cable.
Background
The oil-filled submarine cable is core equipment for long-distance cross-sea power transmission, generally comprises a copper conductor, an insulating layer, a shielding layer, a lead alloy sheath, an inner sheath, armor, an outer sheath and the like, wherein an oil pipe of the copper conductor in the center of the cable is filled with insulating oil to realize insulation and heat dissipation inside the cable, two ends of the submarine cable are respectively provided with one set of oil pump station in a matched mode, power for flowing of the insulating oil is provided for the submarine cable, oil pressure inside the submarine cable is constantly kept, and the phenomenon that the damage range of the cable is expanded due to the fact that seawater flows back into the submarine cable when.
Because the related work of laying, installing, maintaining and continuing, electrical test and the like of the oil-filled submarine cable relates to temporary plugging of the submarine cable, plugging in different modes can be carried out according to different requirements in the past, the plugging modes are not uniform, the comprehensive requirement on the skill level of operators is higher, the spare parts, materials and tool preparations of various plugging modes are different, the great resource redundancy waste can be caused, the operation cost is high, the efficiency is low, and the development of various related work of the oil-filled submarine cable is not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the multifunctional plugging connector which integrates the functions of plugging, continuing and oil supplying, is convenient to use in the work of laying, installation, maintenance, continuing, electrical tests and the like of the oil-filled submarine cable, and ensures the universality, the usability and the practicability of the plugging connector on the basis of realizing the relevant functions.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a multifunctional plugging joint special for an oil-filled submarine cable comprises an inner plug and an outer plug;
the inner plug comprises a chassis and a positioning shaft arranged in the center of the chassis, a first through hole is formed in the centers of the chassis and the positioning shaft, and an internal thread is formed in one end, located on the chassis, of the first through hole;
the outer plug comprises a sleeve and a self-sealing joint, one end of the sleeve is open, the other end of the sleeve is closed, a second through hole is formed in the center of the closed end of the sleeve, the self-sealing joint is fixed in the center of the closed end of the sleeve, and the inner flow passage is connected with the second through hole.
When the cable oil supply device is used, the positioning shaft of the inner plug is inserted into the copper conductor oil pipe at the center of the cable, the chassis of the inner plug is attached to the end face of the cable, the whole chassis and the cable end are sleeved by the sleeve of the outer plug, the oil supply pipe is inserted from the self-sealing joint of the outer plug when oil is required to be supplied to the cable, and the screwed pipe penetrates through the self-sealing joint of the outer plug and is in screwed connection with the chassis of the inner plug when the plugs of two cables are required to be connected.
As an improvement of the invention, as a reserved passage, a plurality of radial holes communicated with the first through hole are circumferentially arranged at intervals at one end of the positioning shaft, which is far away from the chassis.
As an improvement of the invention, in order to facilitate the insertion of a copper conductor oil pipe in the center of the cable, the end part of the positioning shaft far away from the chassis is provided with a chamfer I.
As an improvement of the invention, a circle of conical bosses facing the positioning shaft are arranged on the edge of the chassis. When the chassis of the inner plug is attached to the end face of the cable, the conical boss can be inserted into the inner sheath of the cable, and the insulating oil is prevented from flowing out of a gap between the inner plug and the cable.
As an improvement of the invention, the open end of the sleeve is provided with a second chamfer, and when the outer plug and the cable need external stacking sealing, the smooth transition of the sealing material can be realized by the arrangement of the chamfers.
As an improvement of the invention, the outer wall of the sleeve is provided with an external thread at a position adjacent to the second chamfer. The recessed threaded passage facilitates the adhesion of sealing material, resulting in a better seal between the cable and the outer plug.
As an improvement of the invention, the outer wall surface of the sleeve is provided with a plurality of arc-shaped bosses at intervals along the circumferential direction. The sleeve is in interference fit with the cable, and the arc-shaped boss can provide a knocking stress point, so that the outer plug can be conveniently driven into the sleeve.
As an improvement of the invention, the self-sealing joint at the closed end of the sleeve can realize quick connection between two plugs or between the plugs and an oil supply system, can also ensure the sealing property when the plugs are not externally connected, and improves the expansibility and the universality of the plugs.
Compared with the prior art, the invention has the beneficial effects that:
the utility model provides a multi-functional shutoff of oil-filled submarine cable connects collects the shutoff, continues, fuel feeding function in an organic whole, applicable in relevant work such as oil-filled submarine cable laying installation, maintenance are continued, electrical test, have very strong commonality, ease for use, practicality, not only reduced the degree of difficulty of shutoff joint installation operation, also very big saving spare parts resource, it is significant to the quality and the efficiency improvement of cable connection head preparation under water.
Drawings
FIG. 1 is an axial view of an inner plug of the present invention;
FIG. 2 is a front cross-sectional view of the inner plug of the present invention;
FIG. 3 is an axial view of the outer plug of the present invention;
FIG. 4 is a front view of the outer plug of the present invention;
FIG. 5 is a schematic view of the installation of the multifunctional block joint of the present invention with an oil filled submarine cable;
description of reference numerals: 1-inner plug; 11-a chassis; 12-positioning the shaft; 13-a first through hole; 14-internal screw thread; 15-radial holes; 16-chamfering one; 17-a conical boss; 2-outer plug; 21-a sleeve; 22-self sealing joint; 23-a second through hole; 24-chamfering II; 25-external threads; 26-arc boss; 3-oil filled submarine cable.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4, a multifunctional plugging joint special for oil-filled submarine cables comprises an inner plug 1 and an outer plug 2. The inner plug 1 is used for reducing the diameter of a copper conductor oil pipe in the center of the oil-filled submarine cable 3, reducing the flow of insulating oil, and creating environmental and time conditions for sealing the outer plug 2 as primary sealing.
The inner plug 1 mainly comprises a chassis 11 and a positioning shaft 12 arranged in the center of the chassis 11, the positioning shaft 12 is used for being inserted into a copper conductor oil pipe in the center of the oil-filled submarine cable 3, and the chassis 11 is used for being attached to the end face of the oil-filled submarine cable 3. The centers of the chassis 11 and the positioning shaft 12 are provided with a through hole I13 which is used for insulating an oil circulation channel and is communicated with the center of the positioning shaft 12, and meanwhile, one end of the through hole I13, which is positioned on the chassis 11, is provided with an internal thread 14 which can be connected with a thread of a connecting pipe. Preferably, the outer diameter of the positioning shaft 12 is slightly smaller than the inner diameter of the copper conductor oil pipe of the oil-filled submarine cable 3, and the diameter of the chassis 11 is smaller than that of the oil-filled submarine cable 3.
The outer plug 2 mainly comprises a sleeve 21 and a self-sealing joint 22, the sleeve 21 is used for sheathing the end of the oil-filled submarine cable 3, and preferably, the inner diameter of the sleeve 21 is slightly smaller than the diameter of the oil-filled submarine cable 3 so as to enable the sleeve and the oil-filled submarine cable to be in interference fit. One end of the sleeve 21 is open, the other end of the sleeve is closed, a second through hole 23 is formed in the center of the closed end, the self-sealing joint 22 is fixed in the center of the closed end of the sleeve 21, and the internal flow channel is connected with the second through hole 23. Self sealss joint 22 is commercially available, when not inserting fuel feed pipe or connecting pipe, is in the closure state, so, can realize between two end caps or the quick connection between end cap and the oil feeding system, also can guarantee the leakproofness of end cap when not externally connecting, has improved the expansibility and the commonality of end cap.
As shown in fig. 5, when in use, the positioning shaft 12 of the inner plug 1 is inserted into the copper conductor oil pipe in the center of the oil-filled submarine cable 3, the chassis 11 of the inner plug 1 is attached to the end face of the cable, and the chassis 11 and the end of the oil-filled submarine cable 3 are entirely sleeved by the sleeve 21 of the outer plug 2. When oil needs to be supplied to the oil-filled submarine cable 3, the oil supply pipe is inserted from the self-sealing joint 22 of the outer plug 2 to be communicated with the first through hole 13 of the inner plug 1. When the plugs of two cables need to be connected, a threaded pipe penetrates through the self-sealing joint of the outer plug 2 and is in threaded connection with the internal thread 14 on the chassis 11 of the inner plug 1.
As a reserved passage, a plurality of radial holes 15 communicated with the first through holes 13 are formed in the end, far away from the base plate 11, of the positioning shaft 12 at intervals along the circumferential direction. In this embodiment, the number of the radial holes 15 is 4, and the radial holes are distributed in the same plane in a cross shape, but may be designed in a staggered manner as required.
In order to facilitate the insertion of the positioning shaft 13 into the copper conductor oil pipe in the center of the oil-filled submarine cable 3, the end of the positioning shaft 12 remote from the chassis 11 is provided with a chamfer 16.
In order to improve the sealing effect when the inner plug 1 is attached to the end face of the cable, a circle of conical bosses 17 facing the positioning shaft 12 are arranged on the edge of the chassis 11. When the chassis 11 of the inner plug 1 is jointed with the cable end face, the conical boss 17 can be inserted into the inner sheath of the oil-filled submarine cable 3, and the insulating oil is prevented from flowing out of the gap between the jointing faces of the two.
In order to further improve the sealing effect of the outer plug 2, the joint surface of the sleeve 21 and the oil-filled submarine cable 3 can be subjected to packing sealing, and in order to enable the sealing material to be in smooth transition at the joint surface so as to improve the sealing performance, a second chamfer 24 is arranged at the open end of the sleeve 21, so that when the outer plug 2 and the oil-filled submarine cable 3 are subjected to external stacking sealing, the second chamfer 24 can realize smooth transition of the sealing material.
Further, in order to facilitate the adhesion of the sealing material, an external thread 25 is provided on the outer wall of the sleeve 21 adjacent to the second chamfer 24. The recessed threaded passage can be used as an attachment groove for a sealing material, which can enable better sealing between the oil-filled submarine cable 3 and the outer plug 2.
Because the outer plug 2 and the oil-filled submarine cable 3 preferably adopt interference fit, in order to facilitate the outer plug 2 to be sleeved at the end of the oil-filled submarine cable 3, a plurality of arc-shaped bosses 26 are arranged on the outer wall surface of the sleeve 21 at intervals along the circumferential direction. The arc-shaped boss 26 is enclosed into a retainer ring structure, so that a knocking stress point can be provided, and the outer plug 2 can be conveniently driven into the retainer ring structure.
In conclusion, the multifunctional plugging connector can realize plugging, connection and oil supply functions through the mutual matching of the inner plug 1 and the outer plug 2, is suitable for relevant work such as laying, installation, maintenance and connection, electrical tests and the like of the oil-filled submarine cable 3, has strong universality, usability and practicability, not only reduces the difficulty of the installation operation of the plugging connector, but also greatly saves spare part resources, and has important significance for improving the quality and efficiency of the manufacture of the underwater cable connection head.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (7)
1. The utility model provides a multi-functional shutoff of oil charge submarine cable connects which characterized in that: comprises an inner plug (1) and an outer plug (2);
the inner plug (1) comprises a chassis (11) and a positioning shaft (12) arranged in the center of the chassis (11), a first through hole (13) is formed in the centers of the chassis (11) and the positioning shaft (12), and an internal thread (14) is formed in one end, located on the chassis (11), of the first through hole (13);
the outer plug (2) comprises a sleeve (21) and a self-sealing joint (22), one end of the sleeve (21) is open, the other end of the sleeve is closed, a second through hole (23) is formed in the center of the closed end, the self-sealing joint (22) is fixed in the center of the closed end of the sleeve (21), and the inner flow channel is connected with the second through hole (23).
2. The multifunctional plugging joint special for the oil-filled submarine cable according to claim 1, wherein: one end of the positioning shaft (12) far away from the chassis (11) is provided with a plurality of radial holes (15) communicated with the first through holes (13) at intervals along the circumferential direction.
3. The multifunctional plugging joint special for the oil-filled submarine cable according to claim 1, wherein: the end part of the positioning shaft (12) far away from the chassis (11) is provided with a chamfer I (16).
4. The multifunctional plugging joint special for the oil-filled submarine cable according to claim 1, wherein: the edge of the chassis (11) is provided with a circle of conical bosses (17) facing the positioning shaft (12).
5. The multifunctional plugging joint special for the oil-filled submarine cable according to claim 1, wherein: the open end of the sleeve (21) is provided with a second chamfer (24).
6. The multifunctional plugging joint special for the oil-filled submarine cable according to claim 5, wherein: and an external thread (25) is arranged at the position of the outer wall of the sleeve (21) adjacent to the second chamfer (24).
7. The multifunctional plugging joint special for the oil-filled submarine cable according to claim 1, wherein: the outer wall surface of the sleeve (21) is provided with a plurality of arc-shaped bosses (26) at intervals along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011323241.1A CN112688269B (en) | 2020-11-23 | 2020-11-23 | Multifunctional plugging connector special for oil-filled submarine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011323241.1A CN112688269B (en) | 2020-11-23 | 2020-11-23 | Multifunctional plugging connector special for oil-filled submarine cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112688269A true CN112688269A (en) | 2021-04-20 |
| CN112688269B CN112688269B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011323241.1A Active CN112688269B (en) | 2020-11-23 | 2020-11-23 | Multifunctional plugging connector special for oil-filled submarine cable |
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| CN109842085A (en) * | 2019-03-22 | 2019-06-04 | 中国科学院声学研究所 | A kind of pressure balance type seabed master base station photoelectric separating apparatus |
| CN111188962A (en) * | 2019-12-25 | 2020-05-22 | 浙江大学 | Assembling method of deep sea equipment and quick joint of oil-filled hose with internal lead |
| JP2020167932A (en) * | 2019-03-29 | 2020-10-08 | 古河電気工業株式会社 | Of cable oil sealing member, of cable with oil sealing member, and end processing method of cable |
| CN211693868U (en) * | 2019-12-26 | 2020-10-16 | 泰州长力树脂管有限公司 | Quick-insertion type oil pipe for hydraulic system of commercial vehicle |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB372169A (en) * | 1930-10-30 | 1932-05-05 | Pirelli | Improvements in or relating to joints for high tension electric cables |
| CA2241655A1 (en) * | 1996-01-22 | 1997-07-31 | The Minnesota Mining & Manufacturing Company | Cable end seal for oil-filled cables |
| CN201462256U (en) * | 2009-05-31 | 2010-05-12 | 段晋蓉 | Pipeline sealing device |
| CN202195216U (en) * | 2011-08-30 | 2012-04-18 | 孙靖茗 | Oil pipe connector |
| CN203215091U (en) * | 2013-03-16 | 2013-09-25 | 重庆东港船舶产业有限公司 | Sealing device of tail shaft temperature sensor |
| CN103672268A (en) * | 2013-11-26 | 2014-03-26 | 武汉船用机械有限责任公司 | Shaft seal pipeline connecting subassembly |
| CN203702131U (en) * | 2014-01-07 | 2014-07-09 | 中国石油集团测井有限公司生产测井中心 | Self-sealing type petroleum well mouth cable protection device |
| CN105673964A (en) * | 2016-04-20 | 2016-06-15 | 扬州良诚汽车部件有限公司 | Oil path sealing device and processing method thereof |
| CN106369238A (en) * | 2016-10-08 | 2017-02-01 | 威海纳川管材有限公司 | Non-metal pipeline joint |
| CN206555596U (en) * | 2017-03-16 | 2017-10-13 | 利奇机械工业股份有限公司 | Oil tube connection structure |
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| CN107332196A (en) * | 2017-08-11 | 2017-11-07 | 中国海洋石油总公司 | FPSO single-point submarine cable head waterproof sealing methods |
| CN207896638U (en) * | 2018-02-08 | 2018-09-21 | 福建中达管业有限公司 | A kind of cable protection pipe block head |
| CN109842085A (en) * | 2019-03-22 | 2019-06-04 | 中国科学院声学研究所 | A kind of pressure balance type seabed master base station photoelectric separating apparatus |
| JP2020167932A (en) * | 2019-03-29 | 2020-10-08 | 古河電気工業株式会社 | Of cable oil sealing member, of cable with oil sealing member, and end processing method of cable |
| CN111188962A (en) * | 2019-12-25 | 2020-05-22 | 浙江大学 | Assembling method of deep sea equipment and quick joint of oil-filled hose with internal lead |
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| Publication number | Publication date |
|---|---|
| CN112688269B (en) | 2021-11-09 |
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Effective date of registration: 20230717 Address after: 570000 Unit B, 14 #, Fortune Plaza, 103 Binhai Avenue, Haikou City, Hainan Province Patentee after: Haikou Branch of Guangzhou Bureau of China Southern Power Grid Co.,Ltd. Address before: 510663 Building 2, 223 science Avenue, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU BUREAU OF EXTRA HIGH VOLTAGE TRANSMISSION COMPANY OF CHINA SOUTHERN POWER GRID Co.,Ltd. |