CN113140366A - Flame-retardant and corrosion-resistant insulated cable - Google Patents
Flame-retardant and corrosion-resistant insulated cable Download PDFInfo
- Publication number
- CN113140366A CN113140366A CN202110476779.4A CN202110476779A CN113140366A CN 113140366 A CN113140366 A CN 113140366A CN 202110476779 A CN202110476779 A CN 202110476779A CN 113140366 A CN113140366 A CN 113140366A
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- Prior art keywords
- sleeve
- resistant
- flame
- retardant
- 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
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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Abstract
The invention provides a flame-retardant and anti-corrosion insulated cable, which comprises a cable, and further comprises an insulating sleeve, a wrapping sleeve, a corrosion-resistant sleeve and a wear-resistant sleeve, wherein the insulating sleeve, the wrapping sleeve, the corrosion-resistant sleeve and the wear-resistant sleeve are sequentially arranged from inside to outside, the insulating sleeve is provided with a plurality of flame-retardant grooves, the flame-retardant grooves are sunken towards the axis of the insulating sleeve, the flame-retardant grooves are arranged along the circumference of the axis of the insulating sleeve in an array manner, flame-retardant powder is filled in the flame-retardant grooves, the inner ring of the wrapping sleeve is in mutual contact with the outer ring of the insulating sleeve, the inner ring of the wrapping sleeve is adhered to the outer ring of the insulating sleeve through hot melting adhesion, in the parcel cover, along the axis direction interlude of parcel cover has a plurality of wire, the inner circle of corrosion-resistant cover and the outer lane of parcel cover mutual contact, and the cable is provided with two bundles at least along the axis of stand wear and tear cover, and the inside of stand wear and tear cover is equipped with two at least support fossil fragments, support fossil fragments and corrosion-resistant cover outer lane and stand wear and tear the inner circle contact of cover. The cable has good flame-retardant and anti-corrosion effects.
Description
Technical Field
The invention relates to the field of cables, in particular to a flame-retardant and corrosion-resistant insulated cable.
Background
The cable is a medium for realizing the electrification of electrical equipment, and particularly in a power grid, the cable is the root of stable and durable power transmission.
With the development of science and technology, special cables suitable for various environments are born, the cables have the characteristics of high strength, abrasion resistance, corrosion resistance, high insulating property, flame retardance and the like, and the cables applied to the special environments often have one or more characteristics.
Under the condition that corrosive factors exist in the environment of a chemical engineering place, the cable has a great challenge on the corrosion resistance, and chemical products are more dangerous than general fire in case of fire, so the cable in the chemical engineering place also has high requirements on the flame retardant capability of the cable, and under the condition that the cable generates heat abnormally, open fire needs to be prevented for a long time. However, the application range of chemical places is narrow, and the existing special cables are not strong in corrosion prevention and flame retardance and are not used in the chemical field.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a flame-retardant and corrosion-resistant insulated cable which has good flame-retardant and corrosion-resistant effects.
In order to achieve the purpose, the flame-retardant and corrosion-resistant insulated cable comprises a cable, an insulating sleeve, a wrapping sleeve, a corrosion-resistant sleeve and a wear-resistant sleeve, wherein the insulating sleeve, the wrapping sleeve, the corrosion-resistant sleeve and the wear-resistant sleeve are sequentially arranged from inside to outside, a plurality of flame-retardant grooves are arranged on the insulating sleeve and sunken towards the axis of the insulating sleeve, the flame-retardant grooves are arranged along the axis circumference of the insulating sleeve in an array manner, flame-retardant powder is filled in the flame-retardant grooves,
the inner ring of the wrapping sleeve is contacted with the outer ring of the insulating sleeve, the inner ring of the wrapping sleeve is adhered with the outer ring of the insulating sleeve through hot melt adhesive, a plurality of metal wires are inserted in the wrapping sleeve along the axial direction of the wrapping sleeve,
the inner ring of the corrosion-resistant sleeve is in contact with the outer ring of the wrapping sleeve, at least two bundles of cables are arranged along the axis of the wear-resistant sleeve, at least two supporting keels are arranged inside the wear-resistant sleeve, and the supporting keels are in contact with the outer ring of the corrosion-resistant sleeve and the inner ring of the wear-resistant sleeve.
Furthermore, the flame retardant powder is aluminum hydroxide powder, and the difference between the depth of the flame retardant groove and the thickness of the insulating sleeve is 1-3 mm.
Furthermore, the insulating sleeve is made of PE plastic, and the thickness of the insulating sleeve is 5-7 mm.
Furthermore, the corrosion-resistant sleeve is fluorinated ethylene propylene copolymer, and the thickness of the corrosion-resistant sleeve is 2-4 mm.
Furthermore, the wear-resistant sleeve is polyester PET, and the thickness of the wear-resistant sleeve is 4-7 mm.
Furthermore, the metal wire is an iron wire, and the diameter of the metal wire is 0.3-0.6 mm.
Further, the support keel is Thermoplastic Polyurethane (TPU).
Has the advantages that: the flame-retardant groove is filled with flame-retardant powder, when the temperature of the cable is abnormal, the flame-retardant groove of the insulating sleeve is thinnest, so that the flame-retardant groove is firstly damaged due to high temperature, the flame-retardant powder in the flame-retardant groove can be decomposed under the condition of high temperature, a large amount of heat can be absorbed in the decomposition process, the ignition time of the cable is prolonged, and when the flame-retardant powder is aluminum hydroxide, water is generated in the decomposition product, so that the heat can be further absorbed, and the ignition time of the cable is prolonged;
the fluorinated ethylene propylene copolymer is used as the corrosion-resistant sleeve, and has strong resistance to various acidic chemical substances.
Drawings
The present invention will be further described and illustrated with reference to the following drawings.
Fig. 1 is a cross-sectional view of a preferred embodiment of the present invention.
Reference numerals: 1. a cable; 2. an insulating sleeve; 3. wrapping the sleeve; 4. a corrosion-resistant sleeve; 5. a wear-resistant sleeve; 6. a metal wire; 7. a flame retardant tank; 8. and supporting the keel.
Detailed Description
The technical solution of the present invention will be more clearly and completely explained by the description of the preferred embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the flame-retardant and corrosion-resistant insulated cable according to the preferred embodiment of the present invention includes a cable 1, and the cable further includes an insulating sleeve 2, a wrapping sleeve 3, a corrosion-resistant sleeve 4, and a wear-resistant sleeve 5, wherein the insulating sleeve 2, the wrapping sleeve 3, the corrosion-resistant sleeve 4, and the wear-resistant sleeve 5 are sequentially disposed from inside to outside, and the insulating sleeve 2, the wrapping sleeve 3, and the corrosion-resistant sleeve 4 are wrapped outside the cable 1.
The insulating sleeve 2 is provided with a plurality of flame-retardant grooves 7, each flame-retardant groove 7 is sunken towards the axis direction of the insulating sleeve 2, and the flame-retardant grooves 7 are arranged along the axis circumference array of the insulating sleeve 2. The difference between the depth of the flame-retardant groove 7 and the thickness of the insulating sleeve 2 is 1-3 mm, preferably 2 mm, that is, the thinnest position of the insulating sleeve 2 is at the position of the flame-retardant groove 7, and the thickness is only 2 mm. The flame-retardant groove 7 is filled with flame-retardant powder, and the flame-retardant powder is aluminum hydroxide powder.
When the cable is abnormal, the weakest position of the insulating sleeve 2, namely the position of the flame-retardant groove 7, can be burnt out firstly by high temperature. The aluminum hydroxide powder in the flame-retardant tank 7 is leaked in a high-temperature environment, and can be quickly decomposed into water, aluminum oxide and water, a large amount of people is absorbed in the decomposition process, the time of the cable generating open fire is delayed, meanwhile, water is generated in the decomposition process, the water also can absorb a large amount of heat, and the time of the cable generating open fire is further delayed.
The inner circle of parcel cover 3 and the outer lane of insulating cover 2 contact each other, and the inner circle of parcel cover 3 and the outer lane of insulating cover 2 are glued through the hot melt adhesive, in parcel cover 3, along the axis direction interlude of parcel cover 3 there is a plurality of wire 6.
Wire 6 adopts the iron wire, and wrapping 3 can have two apparent benefits like this:
1. the wrapping sheath 3 can be bent by the ductility of the iron wire. Through the rigidity of iron wire, the degree of buckling that makes parcel cover 3 can not be too big, can not produce and make difficult because the degree of buckling too big and produce the condition of coming unstuck between parcel cover 3 and the insulating cover 2, just also avoided the condition that the fire-retardant powder was leaked to the outer wall of parcel cover 3 inner wall and insulating cover 2.
2. A circle of iron wires arranged around the cable has the electromagnetic shielding effect, and the current flowing in the cable can reduce the magnetic interference on external electrical appliances.
The inner ring of the corrosion-resistant sleeve 4 is in contact with the outer ring of the wrapping sleeve 3, the cable 1 is at least provided with two bundles along the axis of the wear-resistant sleeve 5, at least two supporting keels 8 are arranged inside the wear-resistant sleeve 5, and the supporting keels 8 are in contact with the outer ring of the corrosion-resistant sleeve 4 and the inner ring of the wear-resistant sleeve 5. The two cables 1 are restrained by the support keel 8, and the support keel 8 can also be slightly bent.
The thickness of the insulating sleeve 2 is 5-7 mm, preferably 6 mm, and PE plastic is adopted. Polyethylene (PE) plastic, one of the common plastics, has been reported to have excellent electrical insulation properties.
The thickness of wrapping 3 is 3 ~ 7 millimeters, preferably 4 millimeters, adopts rubber to make, and the diameter of iron wire is 0.3 ~ 0.6 millimeters, preferably 0.5 millimeters.
The corrosion-resistant sleeve 4 is fluorinated ethylene propylene copolymer, and the thickness of the corrosion-resistant sleeve 4 is 2-4 mm, preferably 3 mm. According to encyclopedia, the trade name of fluorinated ethylene propylene copolymer (perfluoroethylene propylene copolymer) is as follows: teflon FEP (fluorinated ethylene propylene) FEP is a copolymer of tetrafluoroethylene and hexafluoropropylene. As an existing product, the fluorinated ethylene propylene copolymer has excellent corrosion resistance in various acid, alkali and oxide categories, and is more suitable for the chemical field when used as a corrosion-resistant sleeve for protecting cables.
The support keel 8 is thermoplastic polyurethane TPU. According to encyclopedic records, the thermoplastic polyurethane TPU has high strength and good elasticity.
The wear-resistant sleeve 5 is polyester PET, and the thickness of the wear-resistant sleeve 5 is 4-7 mm, preferably 5 mm. Polyester Polyethylene terephthalate (PET) is described as a polymer compound in encyclopedia. Polyethylene terephthalate (PET) is produced by Polycondensation of Terephthalic Acid (PTA) and Ethylene Glycol (EG), wherein a part of PET is finally produced by underwater granulation. Has good fiber forming property, mechanical property, wear resistance, creep resistance, low water absorption and electrical insulation property.
The above detailed description merely describes preferred embodiments of the present invention and does not limit the scope of the invention. Without departing from the spirit and scope of the present invention, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. The scope of the invention is defined by the claims.
Claims (7)
1. The flame-retardant and anti-corrosion insulated cable comprises a cable wire and is characterized by further comprising an insulating sleeve, a wrapping sleeve, a corrosion-resistant sleeve and a wear-resistant sleeve, wherein the insulating sleeve, the wrapping sleeve, the corrosion-resistant sleeve and the wear-resistant sleeve are sequentially arranged from inside to outside, a plurality of flame-retardant grooves are formed in the insulating sleeve and are sunken towards the axis of the insulating sleeve, the flame-retardant grooves are arranged along the axis circumference array of the insulating sleeve and are filled with flame-retardant powder,
the inner ring of the wrapping sleeve is contacted with the outer ring of the insulating sleeve, the inner ring of the wrapping sleeve is adhered with the outer ring of the insulating sleeve through hot melt adhesive, a plurality of metal wires are inserted into the wrapping sleeve along the axial direction of the wrapping sleeve,
the inner ring of the corrosion-resistant sleeve is in contact with the outer ring of the wrapping sleeve, the cable is at least provided with two bundles along the axis of the wear-resistant sleeve, at least two supporting keels are arranged inside the wear-resistant sleeve, and the supporting keels are in contact with the outer ring of the corrosion-resistant sleeve and the inner ring of the wear-resistant sleeve.
2. The flame-retardant and corrosion-resistant insulated cable according to claim 1, wherein the flame-retardant powder is aluminum hydroxide powder, and the difference between the depth of the flame-retardant groove and the thickness of the insulating sheath is 1 to 3 mm.
3. The flame retardant, corrosion resistant and insulated electrical cable according to claim 2, comprising a cable, wherein the insulation sheath is a PE plastic, and the thickness of the insulation sheath is 5 to 7 mm.
4. The flame retardant, corrosion resistant and insulated cable according to claim 1, wherein the corrosion resistant sheath is a fluorinated ethylene propylene copolymer and has a thickness of 2 to 4 mm.
5. The flame-retardant and corrosion-resistant insulated cable according to claim 1, wherein the abrasion-resistant sheath is polyester PET, and the thickness of the abrasion-resistant sheath is 4 to 7 mm.
6. The flame retardant, corrosion resistant and insulated cable according to claim 1, wherein the metal wires are iron wires, and the diameter of the metal wires is 0.3 to 0.6 mm.
7. The flame retardant, corrosion resistant, insulated cable of claim 1 wherein the support grid is a Thermoplastic Polyurethane (TPU).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476779.4A CN113140366A (en) | 2021-04-29 | 2021-04-29 | Flame-retardant and corrosion-resistant insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476779.4A CN113140366A (en) | 2021-04-29 | 2021-04-29 | Flame-retardant and corrosion-resistant insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113140366A true CN113140366A (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110476779.4A Pending CN113140366A (en) | 2021-04-29 | 2021-04-29 | Flame-retardant and corrosion-resistant insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113140366A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090092899A1 (en) * | 2007-09-10 | 2009-04-09 | Tiax Llc | Nan0-sized silicon |
| CN208655288U (en) * | 2018-08-30 | 2019-03-26 | 广东欧普泰光缆有限公司 | A kind of flame resistant cable |
| CN209433925U (en) * | 2019-04-11 | 2019-09-24 | 东能(福建)工程有限公司 | A kind of power cable of fire protection flame retarding |
-
2021
- 2021-04-29 CN CN202110476779.4A patent/CN113140366A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090092899A1 (en) * | 2007-09-10 | 2009-04-09 | Tiax Llc | Nan0-sized silicon |
| CN208655288U (en) * | 2018-08-30 | 2019-03-26 | 广东欧普泰光缆有限公司 | A kind of flame resistant cable |
| CN209433925U (en) * | 2019-04-11 | 2019-09-24 | 东能(福建)工程有限公司 | A kind of power cable of fire protection flame retarding |
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Application publication date: 20210720 |