CN201556921U - Cable insulating connector structure - Google Patents
Cable insulating connector structure Download PDFInfo
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- CN201556921U CN201556921U CN2009201395474U CN200920139547U CN201556921U CN 201556921 U CN201556921 U CN 201556921U CN 2009201395474 U CN2009201395474 U CN 2009201395474U CN 200920139547 U CN200920139547 U CN 200920139547U CN 201556921 U CN201556921 U CN 201556921U
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Abstract
The utility model relates to a cable insulating connector structure, which comprises a conductor connecting pipe, an internal shielding layer, an insulating layer, an external shielding layer, a waterproof layer and a sheath. The internal shielding layer is coated outside the connecting pipe, the insulating layer is coated outside the internal shielding layer, two ends of the insulating layer are respectively provided with a stress controller inside, the external shielding layer is covered on the insulating layer, the waterproof layer is arranged outside the external shielding layer, the sheath is arranged outside the waterproof layer, two ends of the external shielding layer are respectively provided with an opening, and the opening at one end is connected with a ground lead inside while the opening at the other end is connected with a ground lead or overvoltage protecting device inside. By aid of the technical scheme, single-core cable metal protective covering induced overvoltage can be limited, ground protection of the cable metal protective covering connected with the cable insulating connector can be realized conveniently, space occupation is reduced and installation operation procedures are simplified, thereby being favorable for increasing working efficiency, reducing labor intensity and saving equipment cost.
Description
Technical field the utility model relates to cable insulated joint, and relate in particular to a kind ofly to be used for connecting two cross-linked power cables, and keep two cables insulation screen separately, on electric, be the structure of the cable insulated joint of insulation.
The metal sheath of the present single-core power cables of technical background all can produce induced voltage in actual motion, the load current size of carrying in the size of this induced voltage and construction of cable parameter, threephase cable arrangement mode, cable length and the cable conductor is relevant.Increase along with the single-core power cables lay length; particularly electric railway system lays very long single-core power cables along the line; for the safe operation of bonding core power cable, need to adopt cable insulated joint and overvoltage protection that the overvoltage of cable metal sheath is protected.
When the single-core cable circuit is not long, general connection and the extension of adopting straight-through joint to realize cable; When circuit is longer, need take measures to limit the metal sheath induction overvoltage, generally adopt the cable insulated joint of traditional bulky to connect ground guard box or cross interconnected case, realize the ground connection and the protection of cable metal sheath by high-pressure coaxial cable.In the ground protection case of sealing or cross interconnected case, split type sheath protector is installed generally, and general the use at 66kV and more than the 66kV in single core electric power system.In 10～35kV, press in the single-core power cables system; in the particularly electric railway distribution system; if adopt traditional straight coupling; will cause the metal sheath of cable to produce dangerous induced voltage; cause the cable metal heating to damage cable; if adopt the cable insulated joint of traditional above electric pressure of similar 66kV to connect ground guard box or cross interconnected case; its volume is big; the workload of installing is big; the moistureproof difficult treatment of water-tight for outdoor equipment; and the scene may not have suitable installing space, therefore installation inconvenience, and equipment cost height.
The summary of the invention technical problem to be solved in the utility model is to provide a kind of structure of cable insulated joint simple in structure; it realizes the multiple mode of ground protection flexibly by ground lead and combination type cable protective layer protector; fitting operation is simple, economical and practical, especially is fit to press among 10～35kV the single-core power cables system.
The utility model is to be achieved through the following technical solutions: the structure of cable insulated joint comprises conductor connecting tube, internal shield, insulating barrier, outer shielding layer, watertight composition and oversheath, wrapping up in internal shield outside its tube connector, wrapping up in insulating barrier outside the internal shield, each built-in Stress Control body of the two ends of insulating barrier, wrapping up in outer shielding layer outside the insulating barrier, be provided with watertight composition outside the outer shielding layer, also be provided with oversheath outside the watertight composition, wherein the outer shielding layer two ends respectively are provided with one section opening, respectively are connected with ground lead in the opening.
Cable insulated joint comprises conductor connecting tube, internal shield, insulating barrier, outer shielding layer, watertight composition and oversheath; wrapping up in internal shield outside its tube connector; wrapping up in insulating barrier outside the internal shield; each built-in Stress Control body of the two ends of insulating barrier; wrapping up in outer shielding layer outside the insulating barrier; be provided with watertight composition outside the outer shielding layer; also be provided with oversheath outside the watertight composition; wherein the outer shielding layer two ends respectively are provided with one section opening; be connected with ground lead in the one end opening, be connected with overvoltage protection in the other end opening.
When above-mentioned cable insulated joint was three connection three-phases, six roots of sensation cable, the ground lead interconnection was on the leading-in conductor of overvoltage protection.
The utility model adopts above technical scheme, utilizes internal shield, insulating barrier, the protection of outer shielding layer multilayer, keeps two cables insulation screen separately to insulate on electric.Employing is connected with ground lead in the outer shielding layer both ends open or overvoltage protection connects, can be according to system's needs, if circuit is shorter, the metal sheath of two cables that connected directly during ground connection, only needs with ground lead the direct ground connection of the metal sheath of two cables is got final product; When circuit is longer, in the time of need taking measures to limit the induction overvoltage on the metal sheath of cable, can use the wherein direct ground connection of metal sheath of a cable of ground lead and composite type sheath protector, the metal sheath of another root cable is connected on the overvoltage protection of composite type sheath protector; When circuit was very long, the ground lead interconnection of three cable insulated joints that needs A, B, C threephase cable can reduce induction overvoltage like this on the leading-in conductor of overvoltage protection.Thereby reach restriction single-core cable metal sheath induction overvoltage; the cable metal sheath ground protection that makes things convenient for cable insulated joint to connect, and it is little to take up room, and the fitting operation program is simple; help increasing work efficiency, reducing labour intensity, saved equipment cost simultaneously.
Description of drawings now is further described the utility model in conjunction with the accompanying drawings:
Fig. 1 is the schematic diagram of one of structure embodiment of the utility model cable insulated joint;
Fig. 2 is two the schematic diagram of the structure embodiment of the utility model cable insulated joint;
Fig. 3 is three cross-coupled structural representations of cable insulated joint of the utility model;
Embodiment sees also shown in Figure 1, a kind of embodiment of the utility model comprises conductor connecting tube 1, internal shield 2, insulating barrier 3, outer shielding layer 4, watertight composition 5 and oversheath 6, wrapping up in internal shield 2 outside its tube connector 1, wrapping up in insulating barrier 3 outside the internal shield 2, each built-in Stress Control body 31 of the two ends of insulating barrier 3,32, wrapping up in outer shielding layer 4 outside the insulating barrier 3, be provided with watertight composition 5 outside the outer shielding layer 4, also be provided with oversheath 6 outside the watertight composition 5, cable conductor 91,92 are plugged in the tube connector 1, wherein outer shielding layer 4 two ends respectively are provided with one section opening 41,42, outer shielding layer 4 both ends opens 41,41 length is 30～50mm, its both ends open 41, respectively be connected with ground lead 7 in 41, ground lead 7 comprises cable conductor 71, cable conductor oversheath 72, the fixture 73 of cable conductor, earth terminal 74, the fixture 73 of cable conductor is connected and fixed cable conductor 71 and outer shielding layer 4.This insulated cable joint is applicable to that cable line is shorter, and the metal sheath of two cables that connected is directly during ground connection.Above-mentioned ground lead 7 length are 600～1000mm, and the cable conductor 71 of ground lead 7 is a flexible conductor, and its sectional area is equal to or greater than 16mm2, and cable conductor oversheath 72 thickness are equal to or greater than 1.5mm.
See also shown in Figure 2 again; be connected with ground lead 7 in the end opening 41 in outer shielding layer 4 two ends among the another kind of embodiment of the utility model; be connected with overvoltage protection 8 in the other end opening; overvoltage protection 8 comprises leading-in conductor 81, lead-in wire oversheath 82, wire fixture 83, overvoltage protection device 84, earth stud 85, and wire fixture 83 is connected and fixed lead-in wire outer conductor 81 and outer shielding layer 4.This insulated cable joint is applicable to that cable line is long, in the time of need taking measures to limit the induction overvoltage on the metal sheath of cable.Above-mentioned ground lead 7, leading-in conductor 81 length are 600～1000mm.
Please adopt shown in Figure 3 again; in the utility model; when cable line is very long; when cable insulated joint is three connections A, B, C three-phase, six roots of sensation cable; the ground lead interconnection is on the leading-in conductor of overvoltage protection; the ground lead 7 that is the cable insulated joint of A phase is connected on the leading-in conductor 81 of B phase overvoltage protection 8; the ground lead 7 of the cable insulated joint of B phase is connected on the leading-in conductor 81 of C phase overvoltage protection 8, and the ground lead 7 of the cable insulated joint of C phase is connected on the leading-in conductor 81 of A phase overvoltage protection 8.Above-mentioned ground lead 7 length are 1000～1500mm.
Above-mentioned lead-in wire oversheath 82 optimum thicknesses are 2.0mm.
Claims (8)
1. the structure of a cable insulated joint, comprise conductor connecting tube, internal shield, insulating barrier, outer shielding layer, watertight composition and oversheath, wrapping up in internal shield outside its tube connector, wrapping up in insulating barrier outside the internal shield, each built-in Stress Control body of the two ends of insulating barrier is being wrapped up in outer shielding layer outside the insulating barrier, be provided with watertight composition outside the outer shielding layer, also be provided with oversheath outside the watertight composition, it is characterized in that: the outer shielding layer two ends respectively are provided with one section opening, respectively are connected with ground lead in the opening.
2. the structure of a cable insulated joint; comprise conductor connecting tube, internal shield, insulating barrier, outer shielding layer, watertight composition and oversheath; wrapping up in internal shield outside its tube connector; wrapping up in insulating barrier outside the internal shield; each built-in Stress Control body of the two ends of insulating barrier; wrapping up in outer shielding layer outside the insulating barrier; be provided with watertight composition outside the outer shielding layer; also be provided with oversheath outside the watertight composition; it is characterized in that: the outer shielding layer two ends respectively are provided with one section opening; be connected with ground lead in the one end opening, be connected with overvoltage protection in the other end opening.
3. the structure of a kind of cable insulated joint according to claim 2 is characterised in that: its cable insulated joint is three when connecting three-phases, six roots of sensation cable, and the ground lead interconnection is on the leading-in conductor of overvoltage protection.
4. according to the structure of claim 1,2 or 3 described a kind of cable insulated joints, be characterised in that: the length of its outer shielding layer both ends open is 30～50mm.
5. according to the structure of claim 1,2 or 3 described a kind of cable insulated joints, be characterised in that: its ground lead comprises cable conductor, cable conductor oversheath, the fixture of cable conductor, earth terminal, and the fixture of cable conductor is connected and fixed cable conductor and outer shielding layer.
6. the structure of a kind of cable insulated joint according to claim 5, be characterised in that: the cable conductor of its ground lead is a flexible conductor, and its sectional area is equal to or greater than 16mm
2, cable conductor oversheath thickness is equal to or greater than 1.5mm.
7. according to the structure of claim 2 or 3 described a kind of cable insulated joints; be characterised in that: its overvoltage protection comprises leading-in conductor, lead-in wire oversheath, wire fixture, overvoltage protection device, earth stud, and wire fixture is connected and fixed leading-in conductor and outer shielding layer.
8. the structure of a kind of cable insulated joint according to claim 7 is characterised in that: its lead-in wire oversheath thickness is 2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201395474U CN201556921U (en) | 2009-07-23 | 2009-07-23 | Cable insulating connector structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201395474U CN201556921U (en) | 2009-07-23 | 2009-07-23 | Cable insulating connector structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201556921U true CN201556921U (en) | 2010-08-18 |
Family
ID=42616611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201395474U Expired - Lifetime CN201556921U (en) | 2009-07-23 | 2009-07-23 | Cable insulating connector structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201556921U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640403A (en) * | 2009-07-23 | 2010-02-03 | 福建中能电气股份有限公司 | Cable insulated joint |
| CN103166011A (en) * | 2011-12-14 | 2013-06-19 | 北京普源精电科技有限公司 | Inserted connecting cable, novel probe and manufacture method thereof |
| FR2994017A1 (en) * | 2012-07-27 | 2014-01-31 | Peugeot Citroen Automobiles Sa | Interface device for shielding between two electric cables of car, has sleeve whose ends are formed between inner insulator and shielding unit, and another inner insulator placed between sleeve and projecting portions of conductive cores |
| CN103985986A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Connector |
| FR3016468A1 (en) * | 2014-01-15 | 2015-07-17 | Nexans | HIGH VOLTAGE ELECTRIC LINE ENTERREE |
| CN105098396A (en) * | 2015-08-25 | 2015-11-25 | 浙江舟山海洋输电研究院有限公司 | Transition joint for connecting non-draining submarine cable and soft straight submarine cable and connecting method thereof |
-
2009
- 2009-07-23 CN CN2009201395474U patent/CN201556921U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640403A (en) * | 2009-07-23 | 2010-02-03 | 福建中能电气股份有限公司 | Cable insulated joint |
| CN103166011A (en) * | 2011-12-14 | 2013-06-19 | 北京普源精电科技有限公司 | Inserted connecting cable, novel probe and manufacture method thereof |
| FR2994017A1 (en) * | 2012-07-27 | 2014-01-31 | Peugeot Citroen Automobiles Sa | Interface device for shielding between two electric cables of car, has sleeve whose ends are formed between inner insulator and shielding unit, and another inner insulator placed between sleeve and projecting portions of conductive cores |
| FR3016468A1 (en) * | 2014-01-15 | 2015-07-17 | Nexans | HIGH VOLTAGE ELECTRIC LINE ENTERREE |
| EP2897241A1 (en) * | 2014-01-15 | 2015-07-22 | Nexans | Buried high-voltage power line |
| CN103985986A (en) * | 2014-05-22 | 2014-08-13 | 国家电网公司 | Connector |
| CN105098396A (en) * | 2015-08-25 | 2015-11-25 | 浙江舟山海洋输电研究院有限公司 | Transition joint for connecting non-draining submarine cable and soft straight submarine cable and connecting method thereof |
| CN105098396B (en) * | 2015-08-25 | 2018-04-10 | 浙江舟山海洋输电研究院有限公司 | Transit joint being connected for not drip extra large cable with soft straight extra large cable and attaching method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 350002 Fuzhou, Cangshan Jinshan Industrial Zone, Jinzhou Road North Patentee after: CEEPOWER Co.,Ltd. Address before: 350002 Fuzhou, Cangshan Jinshan Industrial Zone, Jinzhou Road North Patentee before: Fujian CEE Installation Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |