CN201773952U - Intermediate connector of single core cable - Google Patents
Intermediate connector of single core cable Download PDFInfo
- Publication number
- CN201773952U CN201773952U CN2010201313621U CN201020131362U CN201773952U CN 201773952 U CN201773952 U CN 201773952U CN 2010201313621 U CN2010201313621 U CN 2010201313621U CN 201020131362 U CN201020131362 U CN 201020131362U CN 201773952 U CN201773952 U CN 201773952U
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- copper
- wire conductor
- cored wire
- sleeve
- cable
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Abstract
The utility model an intermediate connector of a single core cable, which is used for connecting two sections of mineral insulated (MI) cables (1), wherein each MI cable (1) comprises a core wire conductor (6), a copper sheath (7) and an insulation layer between the core wire conductor and the copper sheath. The connector comprises the core wire conductors which are connected together in a welded way or through a compression joint pipe (5), and further comprises a copper sleeve (3) sleeving the core wire conductors (6); the outer layers of the MI cables (1) are the copper sheaths (7); copper wrappers (2) used for positioning the copper sleeve (3) are arranged between the copper sheaths (7) and the copper sleeve (3); and the copper sleeve (3), the compression joint pipe (5) or the core wire conductors (6) form a cavity in which mineral insulated powder is filled. The connector and the MI cables can survive in the 950 DEG C flame for 3 hours.
Description
Technical field
The utility model relates to the mineral insulated cable field of connectors, relates in particular to a kind of single-core cable intermediate connector.
Background technology
Mineral insulated cable (Mineral Insulated Cable) is called for short the MI cable, and domestic custom is called copper core copper sheath magnesium oxide insulating cable or fireproof cable.Mineral insulated cable is to adopt the metallic copper of high conductivity to do conductor, and inorganic matter magnesium oxide insulate, and copper pipe is made a kind of cable of sheath.
The single-core cable intermediate connector basic structure that each MI cable manufacturer is equipped with is all according to " mineral insulated cable lays atlas " the ZJ series through type intermediate connector design in (99D163), major part all is with the moisture preventive measure and the insulating means that adopt heat-shrinkable T bush as cable at present, referring to shown in Figure 1, two sections insulated cables 1 ' an end expose separately one section cored wire conductor 6 ', the described cored wire conductor 6 ' two ends that expose separately are by crimping sleeve 5 ' link together, this crimping sleeve 5 ' be coated with heat-shrinkable T bush 4 ', described heat-shrinkable T bush 4 ' be coated on cored wire conductor, on crimping sleeve and the cable copper sheath (crust).Heat-shrinkable T bush has been sealed the space between copper sheath and the conductor, prevents moisture intrusion insulating barrier.The described heat-shrinkable T bush 4 of big envelope body 3 ' be enclosed within ' outer, big envelope body 3 ' two ends by big envelope nut 2 ' be fixed on insulated cable 1 ' on.Also there is fraction to adopt to hold in the hermetically sealed can fluid sealant and Bakelite Cover as seal means, adopts the insulation of heat-shrinkable T bush or porcelain bushing simultaneously.
But, under fire or high temperature, though cable can tolerate 1000 degrees centigrade high temperature, because heat-shrinkable T bush that intermediate connector uses or fluid sealant and Bakelite Cover carburizing temperature are about between the 300-500 degree, can cause sheath and core short circuit, cause the whole piece line powering to stop.
In sum, need a kind of new single-core cable intermediate connector of design to solve the problems of the technologies described above.
The utility model content
The technical problem that the utility model need solve provides the single-core cable intermediate connector, be used to connect two sections mineral insulated cables, described mineral insulated cable comprises the insulating barrier between cored wire conductor, copper sheath and cored wire conductor and the copper sheath, this connector comprises the aluminium hydraulic pressed connecting pipe that connects cored wire conductor, this connector further comprises the copper sleeve that is set in outside the aluminium hydraulic pressed connecting pipe, described each mineral insulated cable skin is a copper sheath, is provided with the copper big envelope of location copper sleeve between described copper sheath and the copper sleeve; Copper sleeve (3) and aluminium hydraulic pressed connecting pipe (5), cored wire conductor (6) form cavity, are equiped with mineral insulation powder (4) in the described cavity.
Preferably, described cored wire conductor cross section is circular or oval.
Preferably, described copper sleeve is coaxial with cored wire conductor, the inwall of copper sleeve to the outer wall of aluminium hydraulic pressed connecting pipe or to the distance of sealing wire outer core be mineral insulated cable thickness 2-4 doubly.
Preferably, described copper big envelope internal diameter is mineral insulated cable external diameter adds 0.5～1mm again.
Preferably, welded seal between described copper big envelope, copper sheath and the copper sleeve.
The utility model uses the method for crimping or welding, and the conductor with single core MI cable connects earlier, then big envelope and the straight-through brass sleeve pipe that connects is fixed on the cable copper sheath, pours into the mineral powder, and the mineral powder must be closely knit, moves in copper sleeve to prevent conductor thread core.The cable place's welded seal that makes moist will can be caused again between copper sheath, big envelope, the brass sleeve pipe etc.This connector can be survived 3 hours in 950 ℃ of flames together with the MI cable.
Description of drawings
Fig. 1 is existing connector construction schematic diagram;
Fig. 2 is the utility model connector construction schematic diagram.
The main element symbol description
Mineral insulated cable 1 brass big envelope 2
Red copper aluminium hydraulic pressed connecting pipe 5 cored wire conductors 6
Mineral insulated cable copper sheath 7
Embodiment
Please refer to shown in Figure 2ly, the single-core cable intermediate connector is used to connect two sections mineral insulated cables 1, and described mineral insulated cable 1 comprises the insulating barrier between cored wire conductor 6, copper sheath 7 and cored wire conductor and the copper sheath.This connector comprises the aluminium hydraulic pressed connecting pipe 5 that connects cored wire conductor 6, this connector further comprises the copper sleeve 3 that is set in outside the aluminium hydraulic pressed connecting pipe 5, described mineral insulated cable 1 skin is a copper sheath 7, is provided with copper big envelope 2 between described copper sheath 7 and the copper sleeve 3, is used for the location of copper sleeve.Copper sleeve 3 and aluminium hydraulic pressed connecting pipe 5, cored wire conductor 6 form cavity, are equiped with mineral insulation powder 4 in the described cavity, and described mineral insulation powder is preferably magnesium oxide, silica, calcium oxide, aluminium oxide etc.
Described aluminium hydraulic pressed connecting pipe 5 is preferably the red copper aluminium hydraulic pressed connecting pipe.
Described copper sleeve is preferably the brass sleeve pipe, and described brass sleeve pipe is coaxial with cored wire conductor, the brass bushing inside pipe wall to the distance of red copper aluminium hydraulic pressed connecting pipe 5 outer walls or welding cored wire conductor 6 outer walls be the mineral insulated cable insulation thickness 2-4 doubly.The brass bushing inside pipe wall is exactly the thickness that pours into the mineral insulation powder to the distance of red copper aluminium hydraulic pressed connecting pipe outer wall or cored wire conductor outer wall.
Copper big envelope 2 forms cavity with copper sleeve 3, cored wire conductor 6 (or aluminium hydraulic pressed connecting pipe 5), and this cavity will seal fully, and the slit must not be arranged, otherwise can moisture absorption short circuit.
If adopt welding manner to connect to two sections cored wire conductors 6, then need not to use red copper aluminium hydraulic pressed connecting pipe 5.
Copper big envelope 2 is preferably the brass big envelope, and the internal diameter of this brass big envelope preferably external diameter R of mineral insulated cable adds 0.5～1mm again.
This patent is carried out the connection of single-core cable in advance for the client before dispatching from the factory.Use the method for crimping or welding, conductor with single line MI cable connects earlier, then big envelope and the straight-through brass sleeve pipe that connects are fixed on the cable copper sheath, pour into the mineral powder, will can cause the cable place's welded seal that makes moist between copper sheath, big envelope, the brass sleeve pipe etc. again.This connector can be survived 3 hours in 950 ℃ of flames together with the MI cable.
Above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art should be within protection range of the present utility model for improvement and modification that the utility model is made according to announcement of the present utility model.
Claims (5)
1. the single-core cable intermediate connector is used to connect two sections cross sections and is circular mineral insulated cable (1), and described mineral insulated cable (1) comprises cored wire conductor (6), the insulating barrier between copper sheath (7) and cored wire conductor and the copper sheath; It is characterized in that: this connector comprises welding or the cored wire conductor (6) that adopts aluminium hydraulic pressed connecting pipe (5) to link together, this connector further comprises the copper sleeve (3) that is set in outside the cored wire conductor (6), described mineral insulated cable (1) skin is coated with copper sheath (7), is provided with the copper big envelope (2) of location copper sleeve (3) between described copper sheath (7) and the copper sleeve (3); Described copper sleeve (3) and aluminium hydraulic pressed connecting pipe (5), cored wire conductor (6) form cavity, are equiped with mineral insulation powder (4) in the described cavity.
2. single-core cable intermediate connector as claimed in claim 1 is characterized in that: described cored wire conductor (6) cross section is for circular or oval.
3. single-core cable intermediate connector as claimed in claim 2, it is characterized in that: described copper sleeve (3) is coaxial with cored wire conductor (6), and the inwall of copper sleeve is 2-4 times of mineral insulated cable thickness to the outer wall of aluminium hydraulic pressed connecting pipe or to the distance of welding cored wire conductor (6) outer wall.
4. as claim 2 or 3 described single-core cable intermediate connectors, it is characterized in that: the external diameter that described copper big envelope internal diameter is a mineral insulated cable (1) adds 0.5～1mm again.
5. single-core cable intermediate connector as claimed in claim 1 is characterized in that: welded seal between described copper big envelope (2), copper sheath (7) and the copper sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201313621U CN201773952U (en) | 2010-03-12 | 2010-03-12 | Intermediate connector of single core cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201313621U CN201773952U (en) | 2010-03-12 | 2010-03-12 | Intermediate connector of single core cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773952U true CN201773952U (en) | 2011-03-23 |
Family
ID=43753794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201313621U Expired - Fee Related CN201773952U (en) | 2010-03-12 | 2010-03-12 | Intermediate connector of single core cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773952U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887631A (en) * | 2014-04-04 | 2014-06-25 | 郭瑞 | Low-melting-point metal cable connection terminal |
| CN104253405A (en) * | 2014-06-13 | 2014-12-31 | 江苏卓创电气科技有限公司 | Intermediate connector of mineral cable single core |
| CN105552595A (en) * | 2016-02-22 | 2016-05-04 | 上海胜华电气股份有限公司 | Waterproof fire-resistant coupler for magnesium oxide cable |
| CN106099602A (en) * | 2016-07-08 | 2016-11-09 | 上海安捷防火智能电缆有限公司 | A kind of welding procedure of mineral insulated cable |
| CN106180959A (en) * | 2016-08-08 | 2016-12-07 | 常州常发制冷科技有限公司 | A kind of Welding method of copper pipes |
| CN108369851A (en) * | 2015-12-08 | 2018-08-03 | 西门子股份公司 | Equipment for making at least four electric conductors be electrically connected |
| CN110768077A (en) * | 2019-10-31 | 2020-02-07 | 华晨鑫源重庆汽车有限公司 | Manufacturing method for high-voltage wire harness transformation |
| CN110829107A (en) * | 2019-10-14 | 2020-02-21 | 秦燕 | High-voltage multi-core cable intermediate connector |
| CN111326865A (en) * | 2020-03-03 | 2020-06-23 | 中海石油(中国)有限公司 | Connector suitable for oil well is three-phase power round cable in pit |
| CN112490811A (en) * | 2020-11-18 | 2021-03-12 | 天水铁路电缆有限责任公司 | Method for connecting railway through ground wire |
-
2010
- 2010-03-12 CN CN2010201313621U patent/CN201773952U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887631A (en) * | 2014-04-04 | 2014-06-25 | 郭瑞 | Low-melting-point metal cable connection terminal |
| CN104253405A (en) * | 2014-06-13 | 2014-12-31 | 江苏卓创电气科技有限公司 | Intermediate connector of mineral cable single core |
| CN108369851A (en) * | 2015-12-08 | 2018-08-03 | 西门子股份公司 | Equipment for making at least four electric conductors be electrically connected |
| US10978236B2 (en) | 2015-12-08 | 2021-04-13 | Siemens Aktiengesellschaft | Apparatus for electrically connecting at least four electrical conductors |
| CN105552595A (en) * | 2016-02-22 | 2016-05-04 | 上海胜华电气股份有限公司 | Waterproof fire-resistant coupler for magnesium oxide cable |
| CN105552595B (en) * | 2016-02-22 | 2017-09-22 | 上海胜华电气股份有限公司 | Water proof type fire resisting connector for magnesia cable |
| CN106099602A (en) * | 2016-07-08 | 2016-11-09 | 上海安捷防火智能电缆有限公司 | A kind of welding procedure of mineral insulated cable |
| CN106180959A (en) * | 2016-08-08 | 2016-12-07 | 常州常发制冷科技有限公司 | A kind of Welding method of copper pipes |
| CN110829107A (en) * | 2019-10-14 | 2020-02-21 | 秦燕 | High-voltage multi-core cable intermediate connector |
| CN110829107B (en) * | 2019-10-14 | 2020-12-22 | 安徽远征电缆科技有限公司 | High-voltage multi-core cable intermediate connector |
| CN110768077A (en) * | 2019-10-31 | 2020-02-07 | 华晨鑫源重庆汽车有限公司 | Manufacturing method for high-voltage wire harness transformation |
| CN111326865A (en) * | 2020-03-03 | 2020-06-23 | 中海石油(中国)有限公司 | Connector suitable for oil well is three-phase power round cable in pit |
| CN111326865B (en) * | 2020-03-03 | 2021-08-06 | 中海石油(中国)有限公司 | Connector suitable for oil well is three-phase power round cable in pit |
| CN112490811A (en) * | 2020-11-18 | 2021-03-12 | 天水铁路电缆有限责任公司 | Method for connecting railway through ground wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20110323 Termination date: 20190312 |