CN201910285U - Branch cable used in high-security place - Google Patents
Branch cable used in high-security place Download PDFInfo
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- CN201910285U CN201910285U CN 201020590525 CN201020590525U CN201910285U CN 201910285 U CN201910285 U CN 201910285U CN 201020590525 CN201020590525 CN 201020590525 CN 201020590525 U CN201020590525 U CN 201020590525U CN 201910285 U CN201910285 U CN 201910285U
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Abstract
The utility model discloses a branch cable used in a high-security place, belonging to the cable technical field. The branch cable used in the high-security place comprises a main cable, a branch cable, a branch binding body and a binding body sheath, wherein the branch cable is connected with the main cable through the branch binding body; the cores of the main cable and the branch cable are respectively wound and wrapped by nonwoven belts; high anti-flaming oxygen insulation layers are extruded on the nonwoven belts; sheathes made of anti-flaming polrvinyl chloride or low-smoke zero-halogen anti-flaming polyolefin are extruded on the high anti-flaming oxygen insulation layers; cable cores are formed by twisting insulation wire cores; the spaces among the insulation wire cores are filled with alkali-free glass silk filling ropes; the insulation wire cores are formed by extruding an insulation layer on a conductor; the conductor is formed by twisting TR type single copper wire; and the material of the insulation layer is cross linked polyethylene. The branch cable has reasonable and simple structure and is easy to manufacture, has stable transmission property and good anti-flaming property, is scientific and environmentally-friendly, has good thermal stability, connector sealing property and bending property, is convenient to install in complex environment, and has good shock resistance; as the branch cable is pre-made in a factory, the engineering period can be shortened.
Description
Technical field
The utility model relates to a kind of cable, and especially high harbor branch cable belongs to the cable technology field.
Background technology
According to incompletely statistics, China is in the fire that takes place in recent years, and the reason of electric wire causes accounting for more than 35% of fire, has 60%～70% in the fire casualties, suffocates because sucked the halogen gas that produces when electric wire burns.The insulation of electric wire and sheath material generally all are to adopt plastics or rubber, this class material can burn in fire, cause the intensity of a fire to expand, so, all can adopt the flame retardant type cable and wire in important place, and traditional flame retardant cable electric wire adopts the fire retardant that contains halogen, though the fire retardant of halogen has the good flame effect, but it has very big critical defect, be mainly reflected in this several respects: can produce a large amount of poisonous and mordant halogen gass during (1) burning, also a large amount of smog be can produce, evacuating personnel and escape are unfavorable for.(2) halogen gas is dispersed in the air, can form acid rain, corrodes various objects, and the environment and the mankind are caused serious secondary harm.(3) contain a large amount of heavy metals in the common PVC plastics, these heavy metals also can cause huge harm to environment.
Countries in the world are all at research environmental-friendly halogen-free low-smoke electric wire and cable material at present.The low smoke and zero halogen material is difficult for prolonging combustion when breaking out of fire, and smog seldom, helps personnel's escape, also can not produce environment and destroy.Simultaneously, personnel's escape probability when increasing breaking out of fire increases time of escape, and now a lot of high safe occasion cables all require to reach corresponding fire resistance rating.Branch cable is as a kind of novel building distribution product of promoting the use of at home, also to develop toward this direction, what branch cable application at present was maximum is at building field, because the superiority of branch cable, also using branch cable in important places such as tunnel, subway, light rails, these places are high to the performance requirement of branch cable, require to have the high fire resistance energy.How branch cable a kind of environment-friendly type, high flame retardant, Halogen is provided is the difficult problem of pendulum in face of those skilled in the art.
The utility model content
The purpose of this utility model is exactly for satisfying the needs in market, high harbor branch cable a kind of environment-friendly type, high flame retardant, Halogen being provided.
The purpose of this utility model is to realize like this, high harbor branch cable, comprise main cable, branch cable, branch's union body, union body sheath, branch cable connects main cable by branch's connected body, it is characterized in that wrapped respectively nonwoven fabrics band on the cable core of described main cable and branch cable, on the nonwoven fabrics band, extrude the high flame retardant oxygen barrier layer, on the high flame retardant oxygen barrier layer, extrude flame-proof polyvinyl chloride or low-smoke and halogen-free flame retardant polyolefin jacket; Described cable core is made by insulated wire cores is stranded, fills the alkali-free glass wool gasket for packing in the insulated wire cores slit; Described insulated wire cores is made of extruded insulation layer on the conductor, and conductor is by stranded the forming of TR type copper single line, and insulating layer material is a crosslinked polyethylene.
Described branch union body is copper C clamp tool, wrapped mica tape on the C clamp tool, dielectric isolation layer is set on mica tape, at the wrapped high flame retardant band of dielectric isolation layer, injection mo(u)lding low-smoke non-halogen flame-retardant clean type injection molding material union body sheath on the high flame retardant band; The copper material of described copper C clamp tool is equal to or higher than No. two copper of GB/T5231 (T2).
The material of described high flame retardant oxygen barrier layer is a high flame retardant polyolefin quality cables material.
The thick middle both sides of described C clamp tool are thin.
The utility model is rational in infrastructure, manufactures easily, and serviceability is good.Main cable and branch cable key property meet the regulation of rated voltage 0.6/1kV power cable, and conductor adopts stranded the forming of TR type copper single line, and conductor wire core meets related request.Use crosslinked polyethylene as cable insulation material, the temperature resistant grade of crosslinked polyethylene can improve the conductor ampacity than the height of PVC.Filler is an alkali-free glass wool, plays the fire resistance that improves cable when cable is filled.Oxygen barrier layer utilizes combustible to break away from oxygen with regard to aphlogistic principle, can encase cable core closely by the mode that extrudes, and cable core is played sealing function, and surfacing is smooth, improves the cable surface presentation quality.Oxygen barrier layer adopts environmental protection clean type high flame retardant material to extrude and forms, in the oxygen barrier layer material, increase metal hyrate composition, improve oxygen index, oxygen barrier layer reacts after meeting fire, resolve into the metal oxide and the crystallization water, metal oxide forms network structure and is wrapped in outside the cable core, and the network structure oxide that oxygen barrier layer is met the formation of fire back has certain absorption and suction-operated to smoke and gas, the crystallization water that decomposites not only can the deposit seed object, and can also play the absorbing and cooling temperature effect.Fine and close and the stable carbide of flame-retardant layer very fast formation one deck in the process of burning, this layer carbide can be isolated the supply of oxygen and flowing of stable fuel gas, realize the requirement that it is highly fire-retardant, fire resistance reaches the fire-retardant requirement of IA level of the GA of the Ministry of Public Security 306.1.Sheath material is a low-smoke halogen-free polyolefin protective cover material extrusion molding, the fire resistance height, and the amount of being fuming is little during the low smoke and zero halogen material combustion, and halogen-containing gas not in the smog does not damage the person and article, reaches the environment protection requirement of user's needs.Branch's union body is special-purpose connection C clamp tool, helps solving cable conductor and expands with heat and contract with cold and change cause loosening, the purpose that reaching improves the quality of products increases the service life.Branch's union body sheath material adopts low-smoke non-halogen flame-retardant clean type injection molding material, this material flowability is good, the connected body smooth surface of injection moulding, and material is not halogen-containing, do not produce harmful gas and material during burning, printing opacity power height helps withdrawing of personnel and object, and environment does not cause secondary harm yet.Adopt mica tape wrapped in the outside of branch's connector, fill dielectric isolation layer then, more wrapped high flame retardant band in the outside of dielectric isolation layer, adopt the injection moulding of high flame retardant level injection molding material afterwards, the fluency of injection moulding can be guaranteed,, the fire-retardant requirement of I category-A can be reached again to guarantee product face table quality.The employing mica tape is wrapped, and improves the rate of putting up, and mica tape can anti-1000 ℃ high temperature, guarantee that product has fire resistance, guarantee the normal power supply of emergency lighting under fire condition, electric power safeguard is provided for withdrawing of personnel, reach the fire-resistant requirement of I category-A with fire control and disaster rescue.Can guarantee the fluency of injection moulding, to guarantee product face table quality, the fire-retardant and fire-resistant requirement of I category-A of I category-A so again.
The utility model takes up room little, and is easy for installation, and Heat stability is good is non-maintaining, long service life.Joint tighness is good, moistureproof, waterproof.Good bending property is convenient to complex environment and is installed.Anti-seismic performance is good, and shake does not influence use.Prefabrication shortens construction period.
The flame retardant rating of this branch cable is higher than category-A, and that utilizes cable extrudes the oxygen barrier layer fire insulation, nonflammable, does not prolong combustion, and not combustion-supporting, the amount of being fuming is little, reduces fire incident and takes place.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a section structure schematic diagram of the present utility model;
Among the figure: 1-conductor, 2-insulating barrier, 3-gasket for packing, 4-nonwoven fabrics band, 5-oxygen barrier layer, 6-sheath, 7-branch johning knot sheath, 8-branch union body.
Embodiment
Adopt TR type copper single line up to specification to be twisted into conductor 1, on conductor 1, extrude crosslinked polyetylene insulated layer 2 and constitute insulated wire cores.Adopt 3-4 to thoroughly do away with the edge core and be twisted into cable core, the insulated wire cores that the main cable core adopts is thicker, and the insulated wire cores that the branch cable core adopts is thinner.Wrapped nonwoven fabrics band 4 on stranded cable core is provided with alkali-free glass wool gasket for packing 3 in the cable core gap in nonwoven fabrics band band 4.On the nonwoven fabrics band, extrude high flame retardant polyolefin quality cables material oxygen barrier layer 5, on high flame retardant oxygen barrier layer 5, extrude flame-proof polyvinyl chloride or low-smoke and halogen-free flame retardant polyolefin jacket 6.Employing extrudes the low smoke and zero halogen oxygen barrier layer, utilize combustible to break away from oxygen with regard to aphlogistic principle, in the oxygen barrier layer material, increase metal hyrate composition, improve oxygen index, oxygen barrier layer reacts after meeting fire, resolve into the metal oxide and the crystallization water, metal oxide forms network structure and is wrapped in outside the cable core, the network structure oxide that oxygen barrier layer is met the formation of fire back has certain absorption and suction-operated to smoke and gas, the crystallization water that decomposites not only can the deposit seed object, and can also play the absorbing and cooling temperature effect.Fine and close and the stable carbide of flame-retardant layer very fast formation one deck in the process of burning, this layer carbide can be isolated the supply of oxygen and flowing of stable fuel gas, realizes the requirement that it is highly fire-retardant.Restrictive coating adopts flame-proof polyvinyl chloride or low smoke halogen-free flame-retardant polyolefin to extrude.Such structure can realize the fire resistance of cable, and is significantly improved aspect light transmittance, has reached 80%, pH value also also reached 4.8.The branch cable core adopts branch's connected body 8 to be connected with the main cable core, and branch's connected body 8 is the C clamp tool, and this anchor clamps copper material should be not less than the regulation of No. two copper of GB/T5231 (T2), and the thick middle both sides of C clamp tool are thin.Adopt mica tape wrapped in the outside of branch's union body, fill dielectric isolation layer then, more wrapped high flame retardant band in the outside of dielectric isolation layer, adopt the injection moulding of high flame retardant level injection molding material afterwards, reach I the category-A fire-retardant and I category-A fire-resistant requirement the same with cable, the injection moulding smoothness, product surface is smooth.On the sheath 6 on branch's connected body 8 and connected body place connected body sheath 7 is set, the union body sheath material is an environmental protection low smoke and zero halogen injection molding material, and material is not halogen-containing, and the amount of being fuming is little during burning, and environment is not produced secondary pollution.
Claims (4)
1. one kind high harbor branch cable, comprise main cable, branch cable, branch's union body, union body sheath, branch cable connects main cable by branch's connected body, it is characterized in that wrapped respectively nonwoven fabrics band on the cable core of described main cable and branch cable, on the nonwoven fabrics band, extrude the high flame retardant oxygen barrier layer, on the high flame retardant oxygen barrier layer, extrude flame-proof polyvinyl chloride or low-smoke and halogen-free flame retardant polyolefin jacket; Described cable core is made by insulated wire cores is stranded, fills the alkali-free glass wool gasket for packing in the insulated wire cores slit; Described insulated wire cores is made of extruded insulation layer on the conductor, and conductor is by stranded the forming of TR type copper single line, and insulating layer material is a crosslinked polyethylene.
2. high harbor branch cable according to claim 1, it is characterized in that described branch union body is copper C clamp tool, wrapped mica tape on the C clamp tool, dielectric isolation layer is set on mica tape, at the wrapped high flame retardant band of dielectric isolation layer, injection mo(u)lding low-smoke non-halogen flame-retardant clean type injection molding material union body sheath on the high flame retardant band; The copper material of described copper C clamp tool is equal to or higher than No. two copper of GB/T5231.
3. high harbor branch cable according to claim 1, the material that it is characterized in that described high flame retardant oxygen barrier layer are high flame retardant polyolefin quality cables material.
4. high harbor branch cable according to claim 2 is characterized in that the thick middle both sides of described C clamp tool are thin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020590525 CN201910285U (en) | 2010-10-25 | 2010-10-25 | Branch cable used in high-security place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020590525 CN201910285U (en) | 2010-10-25 | 2010-10-25 | Branch cable used in high-security place |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910285U true CN201910285U (en) | 2011-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020590525 Expired - Fee Related CN201910285U (en) | 2010-10-25 | 2010-10-25 | Branch cable used in high-security place |
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| Country | Link |
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| CN (1) | CN201910285U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314962A (en) * | 2011-08-24 | 2012-01-11 | 宝胜科技创新股份有限公司 | Special composite branch cable used for railway tunnels |
| CN102751693A (en) * | 2012-07-18 | 2012-10-24 | 江苏金圣电缆有限公司 | Prefabricated branch cable |
| CN103000287A (en) * | 2012-12-17 | 2013-03-27 | 无锡江南电缆有限公司 | Fire-resistant multicore branch cable |
| CN103165232A (en) * | 2011-12-16 | 2013-06-19 | 上海市高桥电缆厂有限公司 | Mineral insulating fire-resistant branch cable |
| CN103165235A (en) * | 2011-12-16 | 2013-06-19 | 上海市高桥电缆厂有限公司 | Mineral insulated soft fire-resistant branch cable |
| CN103165231A (en) * | 2011-12-09 | 2013-06-19 | 上海市高桥电缆厂有限公司 | Mineral insulating refractory branch cable |
| CN105913924A (en) * | 2016-06-03 | 2016-08-31 | 北京华远高科电缆有限公司 | Mineral insulated flexible pre-branch-division fireproof cable |
-
2010
- 2010-10-25 CN CN 201020590525 patent/CN201910285U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314962A (en) * | 2011-08-24 | 2012-01-11 | 宝胜科技创新股份有限公司 | Special composite branch cable used for railway tunnels |
| CN103165231A (en) * | 2011-12-09 | 2013-06-19 | 上海市高桥电缆厂有限公司 | Mineral insulating refractory branch cable |
| CN103165232A (en) * | 2011-12-16 | 2013-06-19 | 上海市高桥电缆厂有限公司 | Mineral insulating fire-resistant branch cable |
| CN103165235A (en) * | 2011-12-16 | 2013-06-19 | 上海市高桥电缆厂有限公司 | Mineral insulated soft fire-resistant branch cable |
| CN102751693A (en) * | 2012-07-18 | 2012-10-24 | 江苏金圣电缆有限公司 | Prefabricated branch cable |
| CN103000287A (en) * | 2012-12-17 | 2013-03-27 | 无锡江南电缆有限公司 | Fire-resistant multicore branch cable |
| CN105913924A (en) * | 2016-06-03 | 2016-08-31 | 北京华远高科电缆有限公司 | Mineral insulated flexible pre-branch-division fireproof cable |
| CN105913924B (en) * | 2016-06-03 | 2018-11-30 | 华远高科电缆有限公司 | A kind of mineral insulation flexibility pays a point fireproof cable in advance |
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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 |
Granted publication date: 20110727 Termination date: 20151025 |
|
| EXPY | Termination of patent right or utility model |