CN109346223B - Shapable fire-resistant cable - Google Patents
Shapable fire-resistant cable Download PDFInfo
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- CN109346223B CN109346223B CN201811291153.0A CN201811291153A CN109346223B CN 109346223 B CN109346223 B CN 109346223B CN 201811291153 A CN201811291153 A CN 201811291153A CN 109346223 B CN109346223 B CN 109346223B
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- refractory material
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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
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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
- H01B7/02—Disposition of insulation
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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
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
- H01B7/207—Metal tubes, e.g. lead sheaths composed of iron or steel
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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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
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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
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
Landscapes
- Insulated Conductors (AREA)
- Electric Cable Installation (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a shapable fire-resistant cable, which adopts a special process of a composite tube, wherein the material of the tube is divided into two layers, the outer layer is a material specially prepared for resisting seawater corrosion, the inner layer is a material specially prepared for resisting oil gas corrosion substances such as hydrogen sulfide, hydrogen and the like, and the two layers are extruded into a whole through processing and heat treatment. The toughness of the inner duplex stainless steel layer is stronger than that of the outer duplex stainless steel layer, the rigidity of the outer duplex stainless steel layer is stronger than that of the inner duplex stainless steel layer, the inner duplex stainless steel layer is more resistant to hydrogen sulfide corrosion and more resistant to hydrogen embrittlement by controlling the alloy ratio of the inner duplex stainless steel layer and the outer duplex stainless steel layer, and the outer duplex stainless steel layer is more resistant to seawater corrosion and better in impact resistance.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a shapeable fire-resistant cable.
Background
With the rapid development of economic construction and the improvement of living standard of people, the traditional cable can not meet the demand. In particular, the requirements for cables are becoming higher and higher in terms of safety and environmental protection. Under a specific environment, the cable is required to have a strong fire-resistant requirement, at present, the traditional cable is poor in fire resistance, most of the traditional cable is made of flammable materials, solid particles are generated after combustion to form smoke, the light transmittance is reduced, people are influenced to escape when a fire disaster happens, and the cable is not resistant to high temperature; some materials also contain halogen, and harmful gases generated after the halogen is combusted have strong toxicity and harm the respiratory system of people. In addition, the halogen gases released by the combustion of halogen-containing polymers, when combined with water vapor, can generate corrosive harmful gases (hydrogen halides) that can corrode some equipment and buildings. Smoke and toxic gas in the fire are important factors which hinder rescue and escape and cause casualties. The common problem of the common fire-resistant cable in the market is that the cable is too hard, and the bending has certain degree of difficulty, because the cable reaches fire-resistant degree, has added a lot of fire-resistant high temperature resistant materials, causes the destruction of the inside functional layer of cable at crooked in-process, and easily causes the cavity at crooked position after the bending, greatly increased cable internal stress, influenced the life of cable.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a settable fire-resistant cable, which is formed by adding a material that is easily decomposed by heat to a cable, decomposing the cable to obtain a high-temperature resistant and fire-resistant material, and allowing the decomposed water to bind to a quick-setting cement tape, thereby setting the quick-setting cement tape. Before the cable is unshaped, the added fireproof materials of the cable are mainly powdery or strip-shaped bendable materials, so that the problems can be well solved, and no organic materials are used, so that other secondary toxic substances cannot be generated even if the cable is burnt in the using process, and the method is specifically as follows:
a shapeable fire-resistant cable comprises a conductor body, a filler body and a sheath body which are arranged from inside to outside in sequence;
the conductor body comprises a conductor, a mica tape and an insulating layer which are arranged from inside to outside in sequence; the filling body comprises a refractory material filling material, a quick-setting cement belt layer and a ceramic fiber paper belt layer which are arranged from inside to outside in sequence; the sheath body is including inner sheath, copper foil area and the oversheath that sets up from inside to outside in proper order. The conductor wraps the mica tape, the mica tape can reach general bending degree and can not cause the damage to insulating layer and conductor, the insulating layer wraps up conductor and mica tape, forms independent conductor body, reduces other materials in the cable and causes the influence to the conductor to influence the result of use.
As a further improvement of the above technical solution:
and the outer surface of the insulating layer is coated with aluminum foil. As the refractory material for releasing water by heating is alkali or hydrated salt of thermally decomposed water and metal oxide, the refractory material has strong alkalinity, aluminum has good shielding effect on alkali, and compared with other metals, aluminum forms a compact film in an alkaline environment to prevent the corrosion of alkali on aluminum foil. Other metals are easy to form primary batteries on microstructures in an alkaline environment, and corrosion of the metals is accelerated.
The refractory filler includes a refractory material that releases water upon heating and an auxiliary material.
The refractory material for releasing water by heating is alkali or hydrated salt of water and metal oxide decomposed by heating, and the auxiliary material is bicarbonate which is easily decomposed by heating. The alkali of the hydroxide is decomposed under the condition of heating to generate water and metal oxide, the water is absorbed by the quick-setting cement belt, and the quick-setting cement belt is solidified to play a supporting role on the cable. The auxiliary material is bicarbonate, water and carbon dioxide are generated after the auxiliary material is heated, and alkali or carbonate is generated, the water and the carbon dioxide are absorbed and solidified by the quick-setting cement belt, the formed alkali or carbonate is a high-temperature resistant material and can be further decomposed to form water, carbon dioxide and metal oxide, and the metal oxide has the function of high melting point heat resistance.
The rapid hardening cement belt layer wraps the refractory material filler in a wrapping mode, and the refractory material filler is longitudinally provided with short glass fibers. The refractory material is internally provided with longitudinal short glass fibers which play a supporting role on the refractory material, so that the structure is more stable, and the fiber is not long, so that the cable is well applicable to bending of cables.
The quick-setting cement belt is internally provided with an aluminum strip. The aluminium strip sets up in the rapid hardening cement area, and the aluminium strip plays supporting role to the rapid hardening cement area, promotes the rapid hardening cement area can closely live refractory material parcel, and the aluminium strip plays the connection effect to the solidification cement area after the solidification, has improved the structural strength on solidification cement band layer greatly, and the cable internal cure cement band layer has improved impact resistance and toughness. The aluminum strip is arranged because aluminum has strong corrosion resistance to alkali.
And the ceramic fiber paper tape layer is wrapped outside the quick setting cement tape layer in the positive and negative directions. The ceramic fiber paper tape layer well isolates the refractory material and the quick-setting cement layer from the sheath body, has strong high-temperature resistance and can relieve part of impact force.
The inner sheath is a high-temperature-resistant wire mesh. The high-temperature-resistant metal mesh tightly wraps the conductor body and the filling body, and the damage to the internal structure of the cable caused by the mutual movement among the layers is prevented.
The high-temperature resistant metal wire mesh is longitudinally wrapped outside the ceramic fiber paper tape layer.
The copper foil tape wraps the inner sheath tightly, and the outer sheath is a stainless steel rolled sheath. Copper foil belt adopts to wrap up the inner sheath parcel tightly around the package mode, prevents that the inside material of obturator from corroding the oversheath, because the reducibility of copper does not have indisputable height, and copper has the corrosion resistance higher than indisputable. The outer sheath is made of stainless steel rolled material, and has good protective performance and corrosion resistance in the process of contacting with the external environment. The thickness of the stainless steel embossing sheath is not more than 0.2 mm.
Has the advantages that:
1. the added fire-resistant material of the cable is mainly powder or strip-shaped bendable material, and no organic material is used, so that other secondary toxic substances can not be generated even if the cable is burnt in a fire manner in the using process.
2. The cable is formed by adding a material which is easy to decompose water under heating, decomposing to obtain a high-temperature-resistant refractory substance, combining the decomposed water with a quick-setting cement belt, curing the quick-setting cement belt and shaping the cable.
3. The rapid hardening cement belt layer wraps the refractory material filler in a wrapping mode, and the refractory material filler is longitudinally provided with short glass fibers. The refractory material is internally provided with longitudinal short glass fibers which play a supporting role on the refractory material, so that the structure is more stable, and the fiber is not long, so that the cable is well applicable to bending of cables.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1, the shapable fire-resistant cable of the embodiment includes a conductor, a filler and a sheath sequentially arranged from inside to outside;
the conductor body comprises a conductor, a mica tape and an insulating layer which are arranged from inside to outside in sequence; the filling body comprises a refractory material filling material, a quick-setting cement belt layer and a ceramic fiber paper belt layer which are arranged from inside to outside in sequence; the sheath body comprises an inner sheath, a copper foil belt and an outer sheath which are arranged from inside to outside in sequence. The conductor wraps the mica tape, the mica tape can reach general bending degree and can not cause the damage to insulating layer and conductor, the insulating layer wraps up conductor and mica tape, forms independent conductor body, reduces other materials in the cable and causes the influence to the conductor to influence the result of use.
The outer surface of the insulating layer is coated with aluminum foil. As the refractory material for releasing water by heating is alkali or hydrated salt of thermally decomposed water and metal oxide, the refractory material has strong alkalinity, aluminum has good shielding effect on alkali, and compared with other metals, aluminum forms a compact film in an alkaline environment to prevent the corrosion of alkali on aluminum foil. Other metals are easy to form primary batteries on microstructures in an alkaline environment, and corrosion of the metals is accelerated.
The refractory filler includes a refractory material that releases water upon heating and an auxiliary material.
The refractory material for releasing water by heating is alkali or hydrated salt of water and metal oxide decomposed by heating, and the auxiliary material is bicarbonate which is easily decomposed by heating. For example Al (HO)3Is decomposed into H by heating2O and Al2O3Water is absorbed by the quick-setting cement belt layer, the quick-setting cement belt layer is solidified after absorbing water, and Al2O3It is a very good refractory material. Such as KAlSO4 .12H2O decomposes to K upon heating2SO4And Al2（SO4）3And H2And O. The alkali of the hydroxide is decomposed under the condition of heating to generate water and metal oxide, the water is absorbed by the quick-setting cement belt, and the quick-setting cement belt is solidified to play a supporting role on the cable. The auxiliary material is bicarbonate, water and carbon dioxide are generated after the auxiliary material is heated, and alkali or carbonate is generated, the water and the carbon dioxide are absorbed and solidified by the quick-setting cement belt, the formed alkali or carbonate is a high-temperature resistant material and can be further decomposed to form water, carbon dioxide and metal oxide, and the metal oxide has the function of high melting point heat resistance.
The rapid hardening cement belt layer wraps the refractory material filler in a wrapping mode, and the refractory material filler is longitudinally provided with short glass fibers. The refractory material is internally provided with longitudinal short glass fibers which play a supporting role on the refractory material, so that the structure is more stable, and the fiber is not long, so that the cable is well applicable to bending of cables.
The quick-setting cement belt is internally provided with an aluminum strip. The aluminium strip sets up in the rapid hardening cement area, and the aluminium strip plays supporting role to the rapid hardening cement area, promotes the rapid hardening cement area can closely live refractory material parcel, and the aluminium strip plays the connection effect to the solidification cement area after the solidification, has improved the structural strength on solidification cement band layer greatly, and the cable internal cure cement band layer has improved impact resistance and toughness. The aluminum strip is arranged because aluminum has strong corrosion resistance to alkali.
The ceramic fiber paper tape layer is wrapped outside the quick setting cement tape layer in the positive and negative directions. The ceramic fiber paper tape layer well isolates the refractory material and the quick-setting cement layer from the sheath body, has strong high-temperature resistance and can relieve part of impact force.
The inner sheath is a high temperature resistant wire mesh. The high-temperature-resistant metal mesh tightly wraps the conductor body and the filling body, and the damage to the internal structure of the cable caused by the mutual movement among the layers is prevented.
The high-temperature resistant wire mesh is longitudinally wrapped outside the ceramic fiber paper tape layer.
The copper foil tape wraps the inner sheath tightly, and the outer sheath is a stainless steel rolled sheath. Copper foil belt adopts to wrap up the inner sheath parcel tightly around the package mode, prevents that the inside material of obturator from corroding the oversheath, because the reducibility of copper does not have indisputable height, and copper has the corrosion resistance higher than indisputable. The outer sheath is made of stainless steel rolled material, and has good protective performance and corrosion resistance in the process of contacting with the external environment. The stainless steel corrugated sheath has an unlimited thickness, for example, the stainless steel corrugated sheath has a thickness of 0.2mm, under the condition that the stainless steel corrugated sheath can be bent to a certain degree.
The technical solutions of the embodiments of the present invention can be combined, and the technical features of the embodiments can also be combined to form a new technical solution.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (2)
1. A shapeable fire resistant cable, comprising: comprises a conductor body, a filler and a sheath body which are arranged from inside to outside in sequence; the conductor body comprises a conductor, a mica tape and an insulating layer which are sequentially arranged from inside to outside; the filling body comprises a refractory material filling material, a quick-setting cement belt layer and a ceramic fiber paper belt layer from inside to outside in sequence; the sheath body comprises an inner sheath, a copper foil belt and an outer sheath which are sequentially arranged from inside to outside; the refractory material filling comprises a refractory material which releases water by heating and an auxiliary material; the refractory material for releasing water by heating is alkali or hydrated salt of heated decomposed water and metal oxide, and the auxiliary material is bicarbonate which is easily decomposed by heating; the rapid hardening cement belt is internally provided with an aluminum strip, the ceramic fiber paper tape layer is wrapped outside the rapid hardening cement belt layer in the positive and negative directions, the inner sheath is a high-temperature-resistant metal wire mesh, the high-temperature-resistant metal wire mesh is longitudinally wrapped outside the ceramic fiber paper tape layer, an aluminum foil is coated on the outer surface of the insulating layer, the rapid hardening cement belt layer wraps a refractory material filler in the wrapping mode, the refractory material filler is longitudinally provided with short glass fibers, the copper foil tape wraps the inner sheath tightly in the wrapping mode, the outer sheath is a stainless steel embossing sheath, and the thickness of the stainless steel embossing sheath is not more than 0.2 mm.
2. A shapeable fire resistant cable according to claim 1, wherein: the refractory material is Al (HO)3Said Al (HO)3Is decomposed into H by heating2O and Al2O3The auxiliary material is bicarbonate, water and carbon dioxide are generated after the auxiliary material is heated, and the quick-setting cement belt absorbs the water and the carbon dioxide to be solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811291153.0A CN109346223B (en) | 2018-10-31 | 2018-10-31 | Shapable fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811291153.0A CN109346223B (en) | 2018-10-31 | 2018-10-31 | Shapable fire-resistant cable |
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| Publication Number | Publication Date |
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| CN109346223A CN109346223A (en) | 2019-02-15 |
| CN109346223B true CN109346223B (en) | 2019-12-31 |
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| CN201811291153.0A Active CN109346223B (en) | 2018-10-31 | 2018-10-31 | Shapable fire-resistant cable |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113035432B (en) * | 2021-03-09 | 2022-08-12 | 福建富鑫达电子有限公司 | Communication cable with good flame retardant property and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103811118A (en) * | 2012-11-14 | 2014-05-21 | 湖北龙腾红旗电缆(集团)有限公司 | Medium voltage fire resistant cable for airport terminal |
| CN203242394U (en) * | 2013-04-26 | 2013-10-16 | 江苏亨通线缆科技有限公司 | A fire-proofing cable having multiple fire-proofing layers |
| CN203812619U (en) * | 2014-01-22 | 2014-09-03 | 深圳市沃尔核材股份有限公司 | Fireproof cable |
| FR3045201B1 (en) * | 2015-12-11 | 2018-01-19 | Nexans | FIRE RESISTANT CABLE |
| CN108346488A (en) * | 2018-04-04 | 2018-07-31 | 江苏荣宜电缆有限公司 | A kind of fire-retardant compound shell-less power cable |
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Denomination of invention: Flame resistant cable capable of being sized Effective date of registration: 20200707 Granted publication date: 20191231 Pledgee: Changsha Bank city branch of Limited by Share Ltd. Pledgor: HUNAN XIANGJIANG CABLES Co.,Ltd.|JIANGXI NANYUAN CABLE Co.,Ltd.|HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd. Registration number: Y2020980003845 |
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Date of cancellation: 20210913 Granted publication date: 20191231 Pledgee: Changsha Bank city branch of Limited by Share Ltd. Pledgor: HUNAN XIANGJIANG CABLES Co.,Ltd.|JIANGXI NANYUAN CABLE Co.,Ltd.|HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd. Registration number: Y2020980003845 |
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Denomination of invention: A finalizable fire-resistant cable Effective date of registration: 20210918 Granted publication date: 20191231 Pledgee: Changsha Bank city branch of Limited by Share Ltd. Pledgor: HUNAN XIANGJIANG CABLES Co.,Ltd.|JIANGXI NANYUAN CABLE Co.,Ltd.|HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd. Registration number: Y2021430000056 |
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