CN207637519U - A kind of prefabricated branch type mineral insulated cable - Google Patents
A kind of prefabricated branch type mineral insulated cable Download PDFInfo
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- CN207637519U CN207637519U CN201721831251.XU CN201721831251U CN207637519U CN 207637519 U CN207637519 U CN 207637519U CN 201721831251 U CN201721831251 U CN 201721831251U CN 207637519 U CN207637519 U CN 207637519U
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- cable
- mineral insulated
- branch type
- insulated cable
- flame retardant
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Abstract
The utility model discloses a kind of prefabricated branch type mineral insulated cable, and main cable is connected with the copper conductor in branch cable by metal fixture；The outside of copper conductor connection in main cable and branch cable is fixed with fireproof metal cover by fastening bolt, and the outside of fireproof metal cover is provided with low smoke and zero halogen injection molded layers；It is coated with mineral insulation flame retardant coating, aluminum metal pipe, PE separation sleeves, the oxygen barrier fireprotection layer of minerals and oversheath successively outside main cable；The outside of metal fixture junction is coated with mineral insulation flame retardant coating；It is wound with water blocking tape outside mineral insulation flame retardant coating；The outer surface of metal fixture connection place mineral insulation flame retardant coating and water blocking tape is wound with aluminium strip；Aluminium strip is welded and connected with aluminum metal pipe both ends, and cable integrally has the more excellent fire prevention of performance, low smoke and zero halogen, fire-retardant, anticorrosion, water resistance.
Description
Technical field
The utility model is related to field of cable technology, and in particular to a kind of prefabricated branch type mineral insulated cable.
Background technology
In recent years, with the continuous improvement that building field requires electric fire-control, skyscraper prefabricated branch type cable,
Gradually develop to the higher technical performance direction of fire-retardant, fire resisting fire-fighting grade.Prefabricated branch type mineral insulated cable has
Fire-retardant, fire resisting, high temperature resistant, corrosion-resistant, safety and a variety of advantages such as long lifespan, comprehensive performance is better than traditional common pre- branch's electricity
Cable, therefore be widely applied in modernizing skyscraper.
The prefabricated branch type mineral insulated cable of existing type, branch's connected body of critical component, generally use
Low smoke and zero halogen plastic branch connected body, aluminum metal cover branch two kinds of structure types of connected body.
Using pre- branch's fireproof cable of low smoke and zero halogen plastic branch connected body, when fire burns, branch's connected body
Plastics can gradually burn totally, do not have effective flameproof protection effect, the insulated wire cores inside branch's connected body is caused to burn, is short
Road causes great electrical safety accident.
And pre- branch's fireproof cable of aluminum metal cover branch connected body is used, couple relative to low smoke and zero halogen plastic branch
Body, fire protecting performance have certain improvement, but because aluminum metal cover material fusing point is at 660 DEG C or so, when fire ignition temperature is higher than 660 DEG C
When, exposed aerial aluminum metal cover connects connected body and even melts temperature distortion, influences the normal of built-in electrical insulation core
Be powered operation, and fire protecting performance is nor best, and comprehensive fire protecting performance needs to be further improved, in addition without plastics outside aluminum metal cover
Equal protective layers, oxidizable, corrosion.
Utility model content
The purpose of this utility model is to provide a kind of prefabricated branch type mineral insulated cables, to solve existing skill
The technical problem that branch's connected body in the presence of art is prevented fires and Corrosion Protection is not high, security reliability is poor.
To achieve the above object, the utility model provides a kind of prefabricated branch type mineral insulated cable, including trunk
Copper conductor in cable, main cable and branch cable is connected by metal fixture；Copper in main cable and branch cable
The outside of conductor connection is fixed with fireproof metal cover by fastening bolt, and the outside of fireproof metal cover is provided with low smoke and zero halogen
Injection molded layers；It is coated with mineral insulation flame retardant coating, aluminum metal pipe, PE separation sleeves, the oxygen barrier fireprotection layer of minerals successively outside main cable
And oversheath；The outside of metal fixture junction is coated with mineral insulation flame retardant coating；It is wound with waterproof outside mineral insulation flame retardant coating
Band；The mineral insulation flame retardant coating of metal fixture connection place and the outer surface of water blocking tape are wound with aluminium strip；Aluminium strip and aluminum metal pipe phase
It is welded to connect.
Optionally, main cable be connected with the copper conductor in branch cable section length be 2~5mm.
Optionally, metal fixture is c-type metal fixture.
Optionally, water blocking tape is high pressure water-proof self-adhesion band.
Optionally, the thickness of aluminium strip is 0.8~1.0mm.
Optionally, the longitudinal cross-section of fireproof metal cover is horizontal "convex" shaped.
Optionally, the longitudinal cross-section of low smoke and zero halogen injection molded layers is horizontal "convex" shaped.
Optionally, the side wall of fireproof metal cover is parallel with the side wall of low smoke and zero halogen injection molded layers.
Optionally, the quantity of fastening bolt is at least two.
Optionally, fastening bolt is uniformly distributed.
The utility model has the following advantages that：
The prefabricated branch type mineral insulated cable of the utility model, can solve the branch in the presence of the prior art
Connected body is prevented fires and Corrosion Protection is not high, security reliability is poor technical problem, with the more excellent fire prevention of performance,
Low smoke and zero halogen, fire-retardant, anticorrosion, water resistance, security reliability and service life are greatly improved, and are completely suitable for high level
The higher circuit place of building fire protection class requirement.The prefabricated branch type mineral insulated cable that the patent is related to, before market
Scape is wide, will obtain wide popularization and application.
Description of the drawings
Fig. 1 is the structural schematic diagram of the prefabricated branch type mineral insulated cable of the utility model.
In figure, 1 is main cable, and 2 be branch cable, and 3 be copper conductor, and 4 be mineral insulation flame retardant coating, and 5 be aluminum metal pipe,
6 be PE separation sleeves, and 7 be the oxygen barrier fireprotection layer of minerals, and 8 be oversheath, and 9 be metal fixture, and 10 be fireproof metal cover, and 11 be fastening
Bolt, 12 be low smoke and zero halogen injection molded layers.
Specific implementation mode
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment
A kind of prefabricated branch type mineral insulated cable, referring to Fig. 1, including main cable 1, main cable 1 and branch line
Copper conductor 3 in cable 2 is connected by metal fixture 9；3 connection of copper conductor in main cable 1 and branch cable 2
Outside is fixed with fireproof metal cover 10 by fastening bolt 11, and the outside of fireproof metal cover 10 is provided with low smoke and zero halogen injection molded layers
12；Be coated with successively outside main cable 1 mineral insulation flame retardant coating 4, aluminum metal pipe 5, PE (polyethylene) separation sleeve 6, minerals every
Oxygen fireprotection layer 7 and oversheath 8；The outside of 9 junction of metal fixture is coated with mineral insulation flame retardant coating 4；Mineral insulation flame retardant coating 4
It is wound with water blocking tape outside；The mineral insulation flame retardant coating 4 of 9 connection place of metal fixture and the outer surface of water blocking tape are wound with aluminium strip；Aluminium
Band is welded and connected with aluminum metal pipe 5.
As it can be seen that the prefabricated branch type mineral insulated cable of the present embodiment, branch's connected body, using fireproof metal cover
The 10 branch's connected body structures being combined with low smoke and zero halogen injection molded layers 12；Fireproof metal cover 10 is by metal case, fastening bolt 11
Deng composition.It is required according to fire preventing prefabricated branch cable use environment, the different of material cost, branch's connected body is divided into aluminum metal cover
Three kinds of shell, copper metal case, stainless steel metal case metal casting press forgings.The metal case outer surface of branch's connected body, then
Using injection molding machine single injection-molded low smoke and zero halogen plastic fireproof layer 12, injected plastics material is that oxygen index (OI) is more than 38%, flame retardant property
Excellent low smoke halogen-free flame-retardant polyolefin injection molding material.
The prefabricated branch type mineral insulated cable of the utility model, can further include such as lower structure, trunk
Cable 1 be connected with the copper conductor 3 in branch cable 2 section length be 2~5mm.Metal fixture 9 is c-type metal fixture.Waterproof
Band is high pressure water-proof self-adhesion band.The thickness of aluminium strip is 0.8~1.0mm.The longitudinal cross-section of fireproof metal cover 10 is horizontal " convex "
Font.The longitudinal cross-section of low smoke and zero halogen injection molded layers 12 is horizontal "convex" shaped.The side wall and low smoke and zero halogen of fireproof metal cover 10
The side wall of injection molded layers 12 is parallel.The quantity of fastening bolt 11 is at least two.Fastening bolt 11 is uniformly distributed.Low smoke and zero halogen is noted
Modeling layer 12 is low-smoke halogen-free polyolefin injection molded layers.
The prefabricated branch type mineral insulated cable of the utility model, branch's connected body be aluminum metal cover and low cigarette without
When halogen injection molded layers, method for production is as follows,
The first step, in the junction of main cable 1 and branch cable 2, successively peelled off with guarded blade utility knife cable oversheath 8,
The oxygen barrier fireprotection layer 7 of minerals, PE separation sleeves 6, aluminum metal pipe 5, mineral insulation flame retardant coating 4 make main cable 1, branch cable 2
Each exposed 2~5mm of copper conductor.
Second step uses hydraulic press pressure using c-type metal fixture by the exposed copper conductor of main cable 1, branch cable 2
It is tight to be coupled, and restore mineral insulation flame retardant coating 4 in c-type metal fixture junction, use high pressure waterproof outside mineral insulation flame retardant coating 4
Water-proofing treatment is carried out in self-adhesive tape winding；Wound using the aluminium strip of 0.8~1.0mm of thickness at 5 stripping of aluminum metal pipe it is complete, and by aluminium
Band and 5 both ends firm welding of aluminum metal pipe, keep good conductive earthing.
Third walks, and using the aluminium fireproof metal cover of units specification, main cable 1,2 connected body of branch cable are covered completely
Firmly, it is used in combination fastening bolt 11 to be fastened, to constitute the connected body of complete aluminium fireproof metal cover；In the knot of aluminum metal case
At joint close gap, 8 junction of aluminum metal case and cable jacket, uniformly smear waterproof gasket cement, with play sealing waterproof work
With.
Oxygen index (OI) is more than 38% low cigarette by the 4th step using 2 special injection molding of branch cable and suitable injection mold
Halogen-free anti-flaming polyolefin injection molding material is once moulded in aluminium fireproof metal cover connection external surface and is molded, finally constitutes aluminium fire prevention
Branch's connected body that metal cap is combined with low smoke and zero halogen injection molded layers 12, branch's connected body have excellent fire prevention, anticorrosion
Characteristic.
The prefabricated branch type mineral insulated cable of the utility model, connected body are copper fireproof metal cover and low smoke and zero halogen
When injection molded layers 12, implementation steps are identical to the 4th step as the above-mentioned first step.
The prefabricated branch type mineral insulated cable of the utility model, connected body are stainless steel fireproof metal cover and low cigarette
When Halogen injection molded layers 12, implementation steps are identical to the 4th step as the above-mentioned first step.
It should be noted that the prefabricated branch type mineral insulated cable of the utility model, mainly to above structure into
Gone improvement, other unmentioned function, component and structures, when needed, may be used can realize in the prior art it is corresponding
The component and structure of function are implemented.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (10)
1. a kind of prefabricated branch type mineral insulated cable, including main cable (1), which is characterized in that main cable (1) and
Copper conductor (3) in branch cable (2) is connected by metal fixture (9)；Copper in main cable (1) and branch cable (2)
The outside of conductor (3) connection is fixed with fireproof metal cover (10) by fastening bolt (11), fireproof metal cover (10) it is outer
Portion is provided with low smoke and zero halogen injection molded layers (12)；Main cable (1) is coated with mineral insulation flame retardant coating (4), aluminum metal pipe successively outside
(5), PE separation sleeves (6), the oxygen barrier fireprotection layer of minerals (7) and oversheath (8)；The outside of metal fixture (9) junction is coated with
Mineral insulation flame retardant coating (4)；It is wound with water blocking tape outside mineral insulation flame retardant coating (4)；The mineral insulation of metal fixture (9) connection place
The outer surface of flame retardant coating (4) and water blocking tape is wound with aluminium strip；Aluminium strip is welded and connected with aluminum metal pipe (5).
2. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that main cable (1) and branch
Copper conductor (3) in line cable (2) be connected section length be 2~5mm.
3. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that metal fixture (9) is c-type
Metal fixture.
4. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that water blocking tape is high pressure waterproof
Self-adhesive tape.
5. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that the thickness of aluminium strip is 0.8
~1.0mm.
6. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that fireproof metal cover (10)
Longitudinal cross-section is horizontal "convex" shaped.
7. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that low smoke and zero halogen injection molded layers
(12) longitudinal cross-section is horizontal "convex" shaped.
8. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that fireproof metal cover (10)
Side wall is parallel with the side wall of low smoke and zero halogen injection molded layers (12).
9. prefabricated branch type mineral insulated cable as described in claim 1, which is characterized in that the number of fastening bolt (11)
Amount is at least two.
10. prefabricated branch type mineral insulated cable as claimed in claim 9, which is characterized in that fastening bolt (11) is equal
Even distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831251.XU CN207637519U (en) | 2017-12-25 | 2017-12-25 | A kind of prefabricated branch type mineral insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831251.XU CN207637519U (en) | 2017-12-25 | 2017-12-25 | A kind of prefabricated branch type mineral insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207637519U true CN207637519U (en) | 2018-07-20 |
Family
ID=62852381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721831251.XU Active CN207637519U (en) | 2017-12-25 | 2017-12-25 | A kind of prefabricated branch type mineral insulated cable |
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| CN (1) | CN207637519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707614A (en) * | 2019-09-19 | 2020-01-17 | 宁波东方电缆股份有限公司 | Method for repairing flexible mineral insulated cable with metal outer sheath |
-
2017
- 2017-12-25 CN CN201721831251.XU patent/CN207637519U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707614A (en) * | 2019-09-19 | 2020-01-17 | 宁波东方电缆股份有限公司 | Method for repairing flexible mineral insulated cable with metal outer sheath |
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