CN105719747A - Flexible fireproof pre-casting branch cable with aluminum metal sleeves - Google Patents
Flexible fireproof pre-casting branch cable with aluminum metal sleeves Download PDFInfo
- Publication number
- CN105719747A CN105719747A CN201610221279.5A CN201610221279A CN105719747A CN 105719747 A CN105719747 A CN 105719747A CN 201610221279 A CN201610221279 A CN 201610221279A CN 105719747 A CN105719747 A CN 105719747A
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- China
- Prior art keywords
- branch
- main line
- aluminum metal
- cable
- metal set
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/009—Cables with built-in connecting points or with predetermined areas for making deviations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Cable Accessories (AREA)
Abstract
The invention discloses a flexible fireproof pre-casting branch cable with aluminum metal sleeves. The flexible fireproof pre-casting branch cable comprises a pre-casting branch cable main line, a pre-casting branch cable branch line and an aluminum pipe connecting piece. The flexible fireproof pre-casting branch cable is characterized in that a main line conductor cable core and a branch line conductor cable core are pressed and connected in parallel through a C-shaped clamp at the branch manufacturing position, and a mineral compound insulating tape is wrapped at a parallel pressing and connecting position; the aluminum pipe connecting piece is used for connecting a main line aluminum metal sleeve at a peeled position, so that the main line aluminum metal sleeve is smooth in circuit and plays a grounding protection role; and finally a halogen-free injection molding layer is wrapped at a cable branch position through a branch mold. The pre-casting branch cable main line comprises the main line conductor cable core, a main line mineral compound insulating layer, the main line aluminum metal sleeve and a main line halogen-free jacket layer; and the pre-casting branch cable branch line comprises a branch line conductor cable core, a branch line mineral compound insulating layer and a branch line halogen-free jacket layer. The flexible fireproof pre-casting branch cable has excellent flame retardant and fireproof performances, the waterproof capacity at a pre-casting branch position is improved, the aluminum pipe connecting piece protects ground resistance to be stable and smooth, the branch manufacturing is simple, convenient and safe, and the manufacturing cost of the pre-casting branch cable is reduced.
Description
Technical field
The present invention relates to the pre-branch technique field of cable, particularly relate to a kind of aluminum metal set fire resistant flexible pre-branched cable.
Background technology
Along with taking place frequently of fire incident, electric wire fire risk understanding is constantly deepened by people, and relevant department is also more and more higher to the requirement of the performances such as electric wire fire protection flame retarding.Spread fast, difficulty of putting out a fire to save life and property owing to cable fire has, produce secondary harm, recovery time the feature such as length can bring huge loss to the lives and properties of national economy and the people.Therefore the fire performance of electric wire, security reliability are proposed harsher service condition by people.As strong in fire prevention, explosion-proof, overload capacity, long service life, the particular/special requirements such as under Fire Conditions, it is properly functioning that Fire lift, fire pump need to keep in certain time, and cable is low-smoke low-halogen low toxicity after combustion, and even smokeless halogen-free is nontoxic.Cable fire-proof measure is to reduce ignition of cable to prolong the important means of combustion, and key is being relied mainly on prevention, and all kinds of fire-resisting cables, fireproof cable are used widely.
In prior art, high request fireproof cable, the requirement of domestic mineral insulated cable Yao You branch, it is generally adopted feeder pillar mode.Backbone enters feeder pillar, and branch's core is drawn by feeder pillar, and this kind of mode needs to operate at building-site, installs loaded down with trivial details and unreliable.Feeder pillar itself do not prevent fires, non-watertight, fire cannot ensure when occurring that mineral insulated cable continues to the requirement of energising.Plastic insulation fire-resistant branch cable protects mica insulation due to its cable body and branch's body without metal tube or can, and fire resistance can only achieve 750 degree 90 minutes, and fire stability is poor；And this kind of cable and branch's body cannot meet spray and waterproof requirement.
Summary of the invention
Technical problem solved by the invention can realize by the following technical solutions:
A kind of aluminum metal set fire resistant flexible pre-branched cable, including a branch cable main body, it is characterised in that described branch cable main body includes a backbone cable, being connected to a branch cable on described backbone cable, described backbone cable is provided with the connecting portion of a raising and described branch cable connective stability；
It is provided with main conductor in described backbone cable, in described branch cable, is provided with tap conductor；
It is provided with the jointing described main conductor and described tap conductor linked together in described connecting portion, is positioned on the described main conductor of described connecting portion and the outer wall of described tap conductor and is surrounded with mineral composite insulation layer；
Described connecting portion includes the injection molded layers that a low-smoke halide-free fireproof composite polyolefine material is made, and described injection molded layers is positioned at the periphery of described mineral composite insulation layer.
By the combination of injection molded layers Yu mineral composite insulation layer, improve the water resistance of entirety, there is superior fire-retardant and fire protecting performance.
Described mineral composite insulation layer is a mineral compound inslation band being made up of high fire-retardance insulating tape, and the outer wall of described mineral composite insulation layer is also surrounded with the Muscovitum belt that mica tape is constituted, and described Muscovitum belt outer wall is also surrounded with the silica gel belt being made up of silicone band.
The present invention by being surrounded with silica gel belt and mica layer in the junction of main conductor Yu described tap conductor, thus realizing superior fire-retardant and fire protecting performance.
Described jointing is a C-type clamp.Described C-type clamp is copper metal material, adopts crimping mode main conductor and tap conductor parallel connection to be crimped by C-type clamp.
Described backbone cable also includes main line mineral composite insulation layer, and described main line mineral composite insulation layer is positioned at outside described main conductor,
Described backbone cable is provided with main line aluminum metal set, and described main line aluminum metal set is positioned at outside described main line mineral composite insulation layer,
Described main line aluminum metal set is stripped the first aluminum metal set, the second aluminum metal set that are split to form；
The lower end of described first aluminum metal set extends in described connecting portion；
The upper end of described second aluminum metal set extends in described connecting portion；
Being additionally provided with an aluminum pipe connector being made up of aluminium alloy in described connecting portion, described first aluminum metal set is connected by described aluminum pipe connector with described second aluminum metal set.
In backbone cable with branch cable connection procedure, the main line aluminum metal set in backbone cable is stripped and is divided into the first aluminum metal set, the second aluminum metal set.By the present invention in that and connect the first metallic sheath and the second metallic sheath with aluminum pipe connector, the main line aluminum metal set circuit making backbone cable is smooth, plays ground protection effect.
Described first aluminum metal set is consistent with the external diameter of described second aluminum metal set.
Described aluminum pipe connector includes the first metalwork, the second metalwork, and described first metalwork and the second metalwork removably connect.
As a kind of preferred version, described first metalwork is equipped with at least four through hole with on described second metalwork；
Described first metalwork and described second metalwork are bolted to connection, and described through-hole wall is provided with the female thread matched with described bolt external screw thread.
Facilitate implementation removably connecting of the first metalwork and the second metalwork.
As another kind of preferred version, described first metalwork is provided with at least four projection, and described second metalwork is provided with and the groove of described protrusions.
Facilitate implementation removably connecting of the first metalwork and the second metalwork.
The length direction of described first metalwork is sequentially provided with the first cell body, the first middle connecting plate, the second cell body, the length direction of described second metalwork is sequentially provided with the 3rd cell body, the second middle connecting plate the 4th cell body；
The distance of described first cell body and described second cell body is equal to the distance of described 3rd cell body with described 4th cell body, and the distance of described first cell body and described second cell body is not less than the lower end distance to described second metallic sheath upper end of described first metallic sheath；
When described first metalwork is connected with described second metalwork, described first cell body is connected with described 3rd cell body and surrounds the first column type through hole, and the internal diameter of described first column type through hole is consistent with the external diameter of described first aluminum metal set；Described second cell body is connected with described 4th cell body and surrounds the second column type through hole, and the internal diameter of described second column type through hole is consistent with the external diameter of described first aluminum metal set.
It is easy to the first metalwork and the first aluminum metal is overlapped and the electric connection of the second aluminum metal set when connecting by the second metalwork.
The preparation method of a kind of mineral insulation metallic sheath fire prevention branch cable, it is characterised in that comprise the steps,
Step one, needing to make bifurcation at backbone cable, peeling off described backbone cable from outside to inside successively, until exposing main conductor；
Described branch cable is peeled off from outside to inside successively, until exposing tap conductor in the end of branch cable；
Step 2, adopts hydraulic means with C-type clamp, main conductor to be crimped with tap conductor parallel connection；
The exposed section of step 3, described main conductor and described tap conductor is surrounded with mineral composite insulation layer；
Step 4, extrudes one layer of injection molded layers by mould in mineral composite insulation layer periphery.
Between described step 3 and described step 4, aluminum pipe connector is used to connect the first aluminum metal set, the second aluminum metal set being stripped；
Having main line aluminum metal set in described backbone cable, being positioned at described backbone cable needs the described main line aluminum metal set making bifurcation to be stripped the first aluminum metal set, the second aluminum metal set that are split to form；
Described first aluminum metal set is connected by described aluminum pipe connector with described second aluminum metal set.
Described use aluminum pipe connector extrudes one layer of injection molded layers in the periphery of described mineral composite insulation layer after connecting the first aluminum metal set, the second aluminum metal set.
In step one, the strip length of described backbone cable opposed outer layer is more than the strip length of relative internal layer.
As a kind of preferred version, described backbone cable is followed successively by main line sheath, main line fireprotection layer, main line aluminum metal set, main line mineral insulation composite bed, main conductor from outside to inside；
The strip length of described main line sheath is not less than the strip length of described main line fireprotection layer, the strip length of described main line fireprotection layer is not less than the strip length of described main line aluminum metal set, and the strip length of described main line aluminum metal set is not less than the strip length of described main line mineral insulation composite bed.
In step one, the strip length of described branch cable opposed outer layer is more than the strip length of relative internal layer.
As a kind of preferred version, described branch cable is followed successively by branch line sheath, branch line mineral insulation composite bed, tap conductor from outside to inside；
The strip length of described branch line sheath is not less than the strip length of described branch line mineral insulation composite bed.
Described mineral insulation composite bed and described injection molded layers constitute the connecting portion of a raising backbone cable and branch cable junction stability.
The thickness of described mineral insulation composite bed less than described injection molded layers thickness 1/2.
The present invention is by controlling the thickness of mineral insulation composite bed, thus saving manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the branch cable body cross-section schematic diagram of the aluminum metal set fire resistant flexible pre-branched cable of the present invention.
Fig. 2 is the first metal component structure schematic diagram of the present invention.
Fig. 3 is the second metal component structure schematic diagram of the present invention.
Fig. 4 is the overall schematic after first metalwork of the present invention, the second metalwork combination.
Fig. 5 is the branch cable body interior structural representation of the aluminum metal set fire resistant flexible pre-branched cable of the present invention.
Detailed description of the invention
Fig. 1 is the branch cable body cross-section schematic diagram of existing aluminum metal set fire resistant flexible pre-branched cable, including backbone cable 6 and branch cable 7；Described backbone cable 6 includes main conductor 601, main line mineral composite insulation layer 602, main line aluminum metal layer 603, main line mineral fireprotection layer 604, main line sheath 605；Described branch cable 7 includes tap conductor 701, branch line mineral composite insulation layer 702, branch line sheath 703.
First metalwork of Fig. 2 and Fig. 3 respectively present invention and the structural representation of the second metalwork.Described first metalwork 10 includes one first cell body 101, and described second metalwork 20 includes one the 3rd cell body 201；Described first metalwork 10 includes one first middle connecting plate 102, and described second metalwork 20 includes one second middle connecting plate 202；In the present embodiment, described first metalwork 10 includes 4 separable bolts 103, and described second metalwork 20 includes 4 female threads 203；Described first metalwork 10 is turned with described second metalwork 20 be connected by bolt 103 and female thread 203.
Fig. 4 is the overall schematic after first metalwork of the present invention, the second metalwork combination.Main line aluminum metal layer 6 is effectively connected by fastening nut by described first metalwork 10 with described second metalwork 20, thus meeting main line aluminum metal layer as protective grounding resistance requirement.
The aluminum metal set fire resistant flexible pre-branched cable installation process of the present invention is as follows:
Fig. 5 is the branch cable body interior structural representation of aluminum metal set fire resistant flexible pre-branched cable.During use, in the required making bifurcation of backbone cable 6, peel off main line sheath 605, main line fireprotection layer 604, main line aluminum metal set 603, main line mineral compound inslation 602 successively, expose main conductor 601, peel off branch line sheath 703, branch line mineral compound inslation 702 at branch cable 7 head end, expose tap conductor 701；Use C-type clamp 1 by crimping mode by crimping in parallel to main conductor 601 and tap conductor 701；The described wrapped mineral compound inslation band 2 of crimping place in parallel；Use aluminum pipe connector 3 to connect and be stripped place's main line aluminum metal set 4, make the main line aluminum metal of backbone cable 6 overlap 4 circuit smooth, play ground protection effect；Finally, one layer of injection molded layers 5 is extruded at cable branch place by branch's mould.
Claims (10)
1. an aluminum metal set fire resistant flexible pre-branched cable, including pre-branched cable main line, pre-branched cable branch line, aluminum pipe connector.It is characterized in that: in branch's making place, main conductor core and tap conductor core are crimped by C-type clamp parallel connection, the described wrapped mineral compound inslation band of crimping place in parallel；Use aluminum pipe connector to connect and be stripped place's main line aluminum metal set, make main line aluminum metal set circuit smooth, play ground protection effect；Finally, one layer of Halogen injection molded layers is extruded at cable branch place by branch's mould.Described pre-branched cable main line includes main conductor core, main line mineral composite insulation layer, main line aluminum metal set, main line mineral fireprotection layer and main line Halogen restrictive coating；Described pre-branched cable branch line includes tap conductor core, branch line mineral composite insulation layer and branch line Halogen restrictive coating.
2. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: described C-type clamp is copper metal material.
3. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: described main conductor core, tap conductor core are that many naked copper monofilament strand systems form.
4. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: described mineral compound inslation band is that silicone band, synthetic mica tape and insulating tape combine.
5. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: described main line mineral compound inslation band is that silicone band, synthetic mica tape combine.
6. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: described branch line mineral compound inslation band is synthetic mica tape and crosslinked polyethylene combines.
7. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: described main line aluminum metal set passes through to be continuously extruded into tubulose for aluminum bar.
8. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterized in that: described aluminum pipe connector is aluminum alloy material, being combined by aluminum pipe connector upper and lower cover, the aluminum metal layer of main line is effectively connected by fastening nut by aluminum pipe connector upper cover with described aluminum pipe connector lower cover.
9. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: the fireprotection layer that described mineral fireprotection layer is described adopts the metal hydrate of aluminium hydroxide, magnesium hydroxide and binding agent composition.
10. a kind of aluminum metal set fire resistant flexible pre-branched cable according to claim 1, it is characterised in that: described Halogen injection molded layers, main line Halogen restrictive coating and branch line Halogen restrictive coating are low-smoke halide-free fireproof composite polyolefine material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221279.5A CN105719747A (en) | 2016-04-11 | 2016-04-11 | Flexible fireproof pre-casting branch cable with aluminum metal sleeves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221279.5A CN105719747A (en) | 2016-04-11 | 2016-04-11 | Flexible fireproof pre-casting branch cable with aluminum metal sleeves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105719747A true CN105719747A (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610221279.5A Pending CN105719747A (en) | 2016-04-11 | 2016-04-11 | Flexible fireproof pre-casting branch cable with aluminum metal sleeves |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732860A (en) * | 2017-10-16 | 2018-02-23 | 贵州南度度城市供用电运营有限责任公司 | A kind of high pressure copper core cable waterproof intermediate joint |
| CN108735351A (en) * | 2018-05-22 | 2018-11-02 | 安徽国电电缆股份有限公司 | A kind of high fire insulation does not disconnect mineral insulation pre-branched cable |
| CN109003709A (en) * | 2018-08-02 | 2018-12-14 | 四川韦克电缆有限公司 | A kind of flexible prefabricated branch's head of rigidity mineral insulated cable |
-
2016
- 2016-04-11 CN CN201610221279.5A patent/CN105719747A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732860A (en) * | 2017-10-16 | 2018-02-23 | 贵州南度度城市供用电运营有限责任公司 | A kind of high pressure copper core cable waterproof intermediate joint |
| CN107732860B (en) * | 2017-10-16 | 2024-05-10 | 贵州南度度城市供用电运营有限责任公司 | Waterproof intermediate head of high-voltage copper core cable |
| CN108735351A (en) * | 2018-05-22 | 2018-11-02 | 安徽国电电缆股份有限公司 | A kind of high fire insulation does not disconnect mineral insulation pre-branched cable |
| CN109003709A (en) * | 2018-08-02 | 2018-12-14 | 四川韦克电缆有限公司 | A kind of flexible prefabricated branch's head of rigidity mineral insulated cable |
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Application publication date: 20160629 |