CN202976895U - Fire-proof single-core branch cable - Google Patents
Fire-proof single-core branch cable Download PDFInfo
- Publication number
- CN202976895U CN202976895U CN 201220672753 CN201220672753U CN202976895U CN 202976895 U CN202976895 U CN 202976895U CN 201220672753 CN201220672753 CN 201220672753 CN 201220672753 U CN201220672753 U CN 201220672753U CN 202976895 U CN202976895 U CN 202976895U
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- cable
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Abstract
The utility model discloses a fire-proof single-core branch cable, which consists of a single-core primary cable, a single-core secondary cable and a branch connecting body by which the single-core primary cable is connected with the single-core secondary cable, wherein the structure of each of the single-core primary cable and the single-core secondary cable comprises a conductor in the middle of the structure, and an insulation layer and a sheath layer which are sequentially coated on the conductor. The inside of the branch connecting body is provided with a connecting joint which connects the primary cable conductor with the secondary cable conductor. The connecting joint is crimped, and an insulating sleeve is wrapped on the joint. The outside of the insulating sleeve is welded with a metal shell which is bucked on the insulating sleeve and seals the insulating sleeve. The metal shell is connected with the sheath layer of the primary cable and the sheath layer of the secondary cable, and is buckled on the sheath layers and seals the sheath layers. The fire-proof single-core branch cable is excellent in safety performance, insulating property and fire-proof property and simple in processing technology.
Description
Technical field
The utility model relates to the electric wire field, specifically refers to a kind of fire-type list core branch cable.
Background technology
Along with taking place frequently of fire incident, people constantly deepen electric wire fire risk understanding, and relevant department is also more and more higher to the requirement of the performances such as electric wire fire protection flame retarding.Characteristics such as spreading fast, the difficulty of putting out a fire to save life and property because cable fire has, produce secondary harm, recovery time is long can be brought huge loss to national economy and the people's lives and properties.Therefore people have proposed harsher service conditions to fire performance, the security reliability of electric wire.As fire prevention, explosion-proof, overload capacity is strong, long service life, under Fire Conditions, Fire lift, fire pump need keep the normal operation in certain hour, cable is the low-smoke low-halogen low toxicity after burning, even smokeless halogen-free is nontoxic waits specific (special) requirements.The cable fire-proof measure is to reduce the important means that ignition of cable prolongs combustion, crucial relying mainly on prevention, and all kinds of fire-resisting cables, fireproof cable are used widely.
Branch cable has obtained propagation and employment widely because have the advantages such as power supply safety is reliable, use cost is low, installation is simple, environmental requirement is low, non-maintaining.Be widely used in the distribution systems such as dwelling house, office tower, tunnel, hotel, hospital, market due to branch cable, with backbone, illuminator such as street lamp power supply, road lamp power supply, highway, bridge, tunnel and the airfield runway etc. of branch line requirement are arranged, so branch cable often also there is fire-resistant even fireproof demand.
Chinese patent CN200720201786 discloses " a kind of inorganic mineral insulation fire preventing prefabricated branch cable ", comprise: " backbone and branch line form by conductor, insulating barrier and metallic sheath; its insulating barrier is that the mineral insulation band is entwined; backbone is connected the y-shaped connection of wire with branch line; node is wound around the mineral insulation band outward; and be crimped on together by connector, outermost layer fastens sealing by metal case and cover of meter hood." this processing technology is complicated, cable is rigidity, and flexibility is poor, is difficult to bending, processes, lays difficulty larger.Form because oversheath adopts drawing copper tubes, limited by plant area, drum length of cable is limited, need increase transition joint during use, contact resistance increases, and has reduced the efficient of transmission of electricity, increase power transmission failure hidden danger point, be difficult to meet related specifications requirements such as " Code for design of cables of electric works ".The magnesium oxide mineral insulated cable is processed external diameter and is limited, and is difficult to adopt multicore cable.On branch's connector branch joint, wrapped band is all that employing is artificial manual wrapped, wrapped not tight, easily produce the bottom pour ladle phenomenon, particularly in injection moulding mold pressing materials process, and the flame retardant coating between main cable, branch cable also easily produces and disconnects, thereby does not have insulating effect when the cable breaking out of fire.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of raising security performance, insulation property, fire resistance excellence, the simple fire-type list of processing technology core branch cable.
a kind of fire-type list core branch cable described in the utility model, it is by single core leader cable, single core branch cable forms with the branch's connector that is connected aforementioned two cables, the structure of single core leader cable and single core branch cable comprises middle conductor and is coated on successively conductor outer insulating barrier and restrictive coating, be provided with the jointing that leader cable conductor and branch cable conductor are linked together in branch's connector, after described jointing crimping at joint lapped insulation cover, be connected to the metal case that fastens sealing in the insulating case outside weld, the metal case is connected restrictive coating and is connected and fastens sealing with branch cable with leader cable.
Described conductor adopts that strand copper wire is stranded to be formed.
Described restrictive coating adopts copper strips vertical bag argon arc welding and embossing.
Described metal case adopts the wrapped argon arc welding of copper strips.
The beneficial effects of the utility model are:
Compared with prior art, main improvement of the present utility model is to substitute with the ceramic silicon rubber insulating sleeve that extrudes the mineral insulation band that is wound around, and the problems such as the easy disconnection of mineral insulation band out-of-flatness can not occur being wound around.Its Stability Analysis of Structures, insulation property are reliable, and fire resistance is excellent, and is safe and reliable good.Conductor adopts strand copper wire stranded, and the real core copper of the surface area ratio of conductor bar is much bigger, and cable is relatively soft.Insulating barrier adopts ceramic silicon rubber to extrude structure, compares with the rigid inorganic thing magnesium oxide of compacting to have stronger flexibility.Sheath material has been selected copper pipe or copper strips, and carries out continuous embossing, has further improved the pliability of cable.Conductor is stranded, insulation extrudes, the sheath argon arc welding is vertical wraps and embossing, all belongs to mechanization and produces continuously, can make length according to customer requirements, is fit to the processing characteristic of branch cable.The flexibility of cable is good, and the finished product main cable can become dish to pack, transport more convenient with branch cable.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment:
As shown in Figure 1, a kind of fire-type list core branch cable described in the utility model mainly comprises single core leader cable 1, single core branch cable 2, branch joint 3, and wherein branch joint 3 is used for connecting aforementioned two cables.The structure of single core leader cable 1 and single core branch cable 2 comprises middle conductor 4 and is extruded in successively conductor 4 outer ceramic silicone rubber insulation layer 5 and restrictive coating 6, be provided with the jointing 7 that single core leader cable conductor and single core branch cable conductor are linked together in branch joint 3, be injected with ceramic silicon rubber insulating sleeve 8 after jointing 7 crimping, be connected to the metal case 9 that fastens sealing in insulating case 8 outside welds, restrictive coating 6 is connected with the metal case and is connected and fasten sealing.
The utility model provides a kind of fire-type list core branch cable structure form and implementation method; the above is only preferred implementation method of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (4)
1. fire-type list core branch cable, it is by single core leader cable (1), single core branch cable (2) forms with the branch's connector (3) that is connected aforementioned two cables, the structure of single core leader cable (1) and single core branch cable (2) comprises middle conductor (4) and is coated on successively conductor outer insulating barrier (5) and restrictive coating (6), be provided with the jointing (7) that leader cable conductor and branch cable conductor are linked together in branch's connector (3), it is characterized in that: after described jointing (7) crimping at joint lapped insulation cover (8), be connected to the metal case (9) that fastens sealing in insulating case (8) outside weld, metal case (9) is connected restrictive coating (6) and is connected and fastens sealing with branch cable with leader cable.
2. fire-type list core branch cable according to claim 1 is characterized in that: described conductor (4) adopts that strand copper wire is stranded to be formed.
3. fire-type list core branch cable according to claim 1, is characterized in that: described restrictive coating (6) employing copper strips vertical bag argon arc welding and embossing.
4. fire-type list core branch cable according to claim 1, is characterized in that: the wrapped argon arc welding of described metal case (9) employing copper strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672753 CN202976895U (en) | 2012-12-10 | 2012-12-10 | Fire-proof single-core branch cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672753 CN202976895U (en) | 2012-12-10 | 2012-12-10 | Fire-proof single-core branch cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202976895U true CN202976895U (en) | 2013-06-05 |
Family
ID=48517939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220672753 Expired - Lifetime CN202976895U (en) | 2012-12-10 | 2012-12-10 | Fire-proof single-core branch cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202976895U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325450A (en) * | 2013-06-28 | 2013-09-25 | 无锡市新阳光电缆有限公司 | Pre-branched cable |
| CN106067620A (en) * | 2016-08-13 | 2016-11-02 | 宝胜科技创新股份有限公司 | Protective metal shell branch cable joint metal shell |
| CN108022673A (en) * | 2017-11-16 | 2018-05-11 | 东莞市朗晟硅材料有限公司 | A kind of fire resistant flexible branch cable of the anti-spray of antidetonation |
| CN109873269A (en) * | 2017-12-01 | 2019-06-11 | 上海胜华特种电缆有限公司 | A kind of fire prevention, waterproof, metal sheathed cable branch head |
-
2012
- 2012-12-10 CN CN 201220672753 patent/CN202976895U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325450A (en) * | 2013-06-28 | 2013-09-25 | 无锡市新阳光电缆有限公司 | Pre-branched cable |
| CN106067620A (en) * | 2016-08-13 | 2016-11-02 | 宝胜科技创新股份有限公司 | Protective metal shell branch cable joint metal shell |
| CN108022673A (en) * | 2017-11-16 | 2018-05-11 | 东莞市朗晟硅材料有限公司 | A kind of fire resistant flexible branch cable of the anti-spray of antidetonation |
| CN109873269A (en) * | 2017-12-01 | 2019-06-11 | 上海胜华特种电缆有限公司 | A kind of fire prevention, waterproof, metal sheathed cable branch head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |