CN101702343B - Method for producing fire-resistant cable - Google Patents
Method for producing fire-resistant cable Download PDFInfo
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- CN101702343B CN101702343B CN200910185535XA CN200910185535A CN101702343B CN 101702343 B CN101702343 B CN 101702343B CN 200910185535X A CN200910185535X A CN 200910185535XA CN 200910185535 A CN200910185535 A CN 200910185535A CN 101702343 B CN101702343 B CN 101702343B
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- fire
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- cable
- mica
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Abstract
The invention relates to a method for producing a fire-resistant cable, comprising the following steps: (1) stranding conductors; (2) winding mica layers around the outer layers of the conductors; (3) extruding silicon rubber insulating layers outside the mica layers; (4) longitudinally winding internal metal protecting layers outside the silicon rubber insulating layers and longitudinally welding seams; (5) juxtaposing a plurality of cable cores formed in the step (4), filling mica ropes in gaps, longitudinally winding external meal protecting layers on the cable cores and longitudinally welding seams; and (6) detecting. Adopting the internal copper protecting layers and the external copper protecting layers, the fire-resistant cable produced with the method has improved fire-resistance and mechanical protection performance. To meet the temperature resistance requirement, the fire resistance requirement and the voltage resistance requirement on the insulating design of the fire-resistant cable, two layers of mica layers are wound, and the silicon rubber insulating layers are extruded. The fire-resistant cable has good electrical performance, heat resistance and fire resistance.
Description
Technical field
The present invention relates to a kind of manufacture method of cable, refer in particular to a kind of manufacture method of fire-resisting cable.
Background technology
According to the data introduction, in the fire that China takes place, because of the electric fire that causes about half.Because cable is aging and overload uses the fire that causes to account for larger proportion, the toxic gas that the cable that ignites during simultaneously because of fire gives out can cause the mass casualties in electrical fire, and hinders fire fighter's fire extinguishing.Therefore it is very important selecting the correct design cable for use.In civil buildings, important main line and fire-fighting circuit cable generally commonly used there is common fire-resisting cable (NH-VV, NH-YJV), low smoke and zero halogen fire-resisting cable (NH-DW-YJV) and mineral insulated cable (BTTZ).The circuit of other general loads then adopts flame retardant type cable (ZR-VV, ZR-YJV).Mineral insulated cable be the cable formed of full-inorganic thing, can not spontaneous combustion, bear the impact that shower water and weight fall and also can keep the complete of circuit for a long time; The plain edition fire-resisting cable can only pass through China standard GB/T19216, and 750 ℃ of burning 90min can't bear the impact that shower water and weight fall.To bear the impact that shower water and weight fall in order satisfying, need to wear metal tube or the sealing crane span structure is protected, to have increased installation auxiliary expenses and requirements of installation space.
Estimate cable according to China and distribute smog and halogen poison gas performance requirement as can be known: 1, mineral insulated cable is made up of inorganic matter, without any smog and poison gas.Mineral insulated cable is different with plastic insulated cable, and it connects and terminal must be according to the method construction of 99D163 standard collective drawings defined, and construction is complicated.2, plastic cable (comprising cross-linking radiation cable and low-smoke halogen-free cable) always can discharge smog and poison gas in fire.The content of halogen of crosslinked cable is lower, and the cable of amount of smoke and polyvinyl chloride insulation is close; The cable amount of smoke of low smoke and zero halogen is lower, and content of halogen is few, but other poison gas content does not reduce.For personnel's places with dense, in case the nontoxic characteristic of mineral insulated cable can be required assistance for personnel escape and fire-fighting and create conditions the complexity but it is constructed when breaking out of fire.Therefore, be necessary to design a kind of manufacture method of fire-resisting cable to produce satisfactory fire-resisting cable.
Summary of the invention
The objective of the invention is deficiency, a kind of manufacture method of fire-resisting cable is provided, smog and problems such as poison gas and work progress complexity are arranged when solving the cable high-temperature of making at present at above-mentioned existence.
The technical solution adopted for the present invention to solve the technical problems is: a kind of manufacture method of fire-resisting cable comprises the steps:
Step 1, stranded conductor;
Step 2, at the outer wrapped mica layer of conductor;
Step 3, outside mica layer, extrude silicone rubber insulation layer again;
Step 4, outside silicone rubber insulation layer vertical covered with gold leaf sheath and the weld seam longitudinally of belonging to;
Step 5, dispose a plurality of cable cores that form by step 4 side by side, fill the mica rope at gap location then, and vertical outer jacket and the weld seam longitudinally of belonging to covered with gold leaf of the cable core that forms in step 4;
Step 6, check.
In the present invention, described silicone rubber insulation layer is to adopt that two-layer two-sided reinforcement synthetic mica tape is overlapping to extrude silastic-layer again after wrapped and be composited.
In the present invention, described conductor is a copper conductor.
In the present invention, described metal sheath is a copper strips.
In the present invention, described metal outer jacket is a copper strips.
Compared to prior art, the fire-resisting cable of making according to the present invention adopts inside and outside metallic copper sheath, has strengthened fire-resistant and the mechanical protection performance.Consider on insulating Design that heatproof requires, fire-resistant requirement and proof voltage requirement, adopt two-layer mica overlapping wrapped, extrude silicone rubber insulation layer then, have preferably electrical property, heat resistance, and fire resistance.
Description of drawings
The cross-sectional view of the electric fire-resisting cable that Fig. 1 produces for a kind of manufacture method of fire-resisting cable according to the present invention.
Embodiment
The present invention is further elaborated with embodiment with reference to the accompanying drawings below.
As shown in Figure 1, the manufacture method of a kind of fire-resisting cable of the present invention comprise the steps: one, twisted copper conductors 1; Two, at the outer wrapped mica layer 2 of copper conductor 1; Three, outside mica layer 2, extrude silicone rubber insulation layer 3 again; Four, vertical covered with gold leaf sheath 4 and the weld seam longitudinally of belonging to outside silicone rubber insulation layer 3; Five, dispose four cable cores that form by step 4 side by side, fill mica rope 5 at gap location then, and vertical outer jacket 6 and the weld seam longitudinally of belonging to covered with gold leaf of the cable core that forms in step 4; Six, check.
This silicone rubber insulation layer 3 is to adopt that two-layer two-sided reinforcement synthetic mica tape is overlapping to extrude silastic-layer again after wrapped and be composited, the metal sheath 4 of every cable core adopts the vertical bag of copper strips and longitudinally stitches weldering, adopt mica rope 5 to fill between cable core and make the construction of cable stable, metal outer jacket 6 adopts the vertical bag of copper strips and longitudinally stitches weldering.
On the basis of having studied cable material, the construction of cable and the fire-resistant requirement of cable, the fire-resisting cable that the method according to this invention is made has all been made improvement on banded structure and technology, and this fire-resisting cable adopts inside and outside metallic copper sheath, has strengthened fire-resistant and the mechanical protection performance.Consider on insulating Design that heatproof requires, fire-resistant requirement and proof voltage requirement, adopt two-layer mica overlapping wrapped, extrude silicone rubber insulation layer then, have preferably electrical property, heat resistance, and fire resistance.
The fire resistance of the fire-resisting cable that the method according to this invention is made, smog and poison gas performance, and mineral insulated cable (BTTZ) and plain edition fire-resisting cable compare, the result is as follows:
| Project | Mineral insulated cable | The fire-resisting cable that the method according to this invention is made | The plain edition fire-resisting cable |
| Fire resistance (pressing GB/T19216,750 ℃ of burning 90min 2A fuse operate as normal) | By test | By test | By test |
| The Halogen performance requirement | Halogen | Halogen | Halogen is arranged |
| Low smoke performance requirement | Smokelessly | Smokelessly | Toxic smoke is arranged |
The fire-resisting cable that the method according to this invention is made is owing to be the design of the flat shape construction of cable, thereby reduced conductor resistance, can be attached in the cable testing bridge compact conformation; Compare with mineral insulated cable, do not need special cable installation accessory, work progress is simple, has saved the annex expense; Compare with common fire-resisting cable, do not need the poling design, meet when fire takes place and can not produce poisonous smog.
The fire-resisting cable that the method according to this invention is made does not have smog and poison gas when having high temperature, not only have higher fire resistance, and has installation conveniently, and the manufacturing process uniqueness makes fire-resistant wire and cable that new selection kind arranged.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (4)
1. the manufacture method of a fire-resisting cable, it is characterized in that: described method comprises the steps:
Step 1, stranded conductor;
Step 2, at the outer wrapped mica layer of conductor;
Step 3, outside mica layer, extrude silicone rubber insulation layer again; Described silicone rubber insulation layer is to adopt that two-layer two-sided reinforcement synthetic mica tape is overlapping to extrude silastic-layer again after wrapped and be composited;
Step 4, outside silicone rubber insulation layer vertical covered with gold leaf sheath and the weld seam longitudinally of belonging to;
Step 5, dispose a plurality of cable cores that form by step 4 side by side, fill the mica rope at gap location then, and vertical outer jacket and the weld seam longitudinally of belonging to covered with gold leaf of the cable core that forms in step 4;
Step 6, check.
2. the manufacture method of a kind of fire-resisting cable according to claim 1, it is characterized in that: described conductor is a copper conductor.
3. the manufacture method of a kind of fire-resisting cable according to claim 1, it is characterized in that: described metal sheath is a copper strips.
4. the manufacture method of a kind of fire-resisting cable according to claim 1, it is characterized in that: described metal outer jacket is a copper strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910185535XA CN101702343B (en) | 2009-11-17 | 2009-11-17 | Method for producing fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910185535XA CN101702343B (en) | 2009-11-17 | 2009-11-17 | Method for producing fire-resistant cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101702343A CN101702343A (en) | 2010-05-05 |
| CN101702343B true CN101702343B (en) | 2011-12-14 |
Family
ID=42157245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910185535XA Expired - Fee Related CN101702343B (en) | 2009-11-17 | 2009-11-17 | Method for producing fire-resistant cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN101702343B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152784A (en) * | 1995-08-28 | 1997-06-25 | 南新英格兰电话公司 | Hybrid communications and power cable and distribution method and network using the same |
| CN1588563A (en) * | 2004-10-15 | 2005-03-02 | 上海胜武电缆有限公司 | Flexible fire-proof cable and its producing process and producing device |
| CN1246861C (en) * | 2001-12-26 | 2006-03-22 | 特变电工山东鲁能泰山电缆有限公司 | 500kV ultra-high voltage cross-linking cable and its production process |
| CN1880822A (en) * | 2005-06-16 | 2006-12-20 | 江苏通光信息有限公司 | Integrated sea cable |
| CN101430947A (en) * | 2008-12-05 | 2009-05-13 | 张荣生 | Corrugated metal sheath inorganic mineral insulation cable and method for producing the same |
-
2009
- 2009-11-17 CN CN200910185535XA patent/CN101702343B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152784A (en) * | 1995-08-28 | 1997-06-25 | 南新英格兰电话公司 | Hybrid communications and power cable and distribution method and network using the same |
| CN1246861C (en) * | 2001-12-26 | 2006-03-22 | 特变电工山东鲁能泰山电缆有限公司 | 500kV ultra-high voltage cross-linking cable and its production process |
| CN1588563A (en) * | 2004-10-15 | 2005-03-02 | 上海胜武电缆有限公司 | Flexible fire-proof cable and its producing process and producing device |
| CN1880822A (en) * | 2005-06-16 | 2006-12-20 | 江苏通光信息有限公司 | Integrated sea cable |
| CN101430947A (en) * | 2008-12-05 | 2009-05-13 | 张荣生 | Corrugated metal sheath inorganic mineral insulation cable and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101702343A (en) | 2010-05-05 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20121117 |