CN111599517A - High-flame-retardant high-shielding torsion-resistant cable - Google Patents

High-flame-retardant high-shielding torsion-resistant cable Download PDF

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Publication number
CN111599517A
CN111599517A CN202010204514.4A CN202010204514A CN111599517A CN 111599517 A CN111599517 A CN 111599517A CN 202010204514 A CN202010204514 A CN 202010204514A CN 111599517 A CN111599517 A CN 111599517A
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CN
China
Prior art keywords
layer
cable
side face
tube
protective
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Granted
Application number
CN202010204514.4A
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Chinese (zh)
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CN111599517B (en
Inventor
朱永松
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SHANDONG ZHONGMAI CABLE Co.,Ltd.
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朱永松
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Priority to CN202010204514.4A priority Critical patent/CN111599517B/en
Publication of CN111599517A publication Critical patent/CN111599517A/en
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Publication of CN111599517B publication Critical patent/CN111599517B/en
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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
    • H01B7/08—Flat or ribbon cables
    • H01B7/0823—Parallel wires, incorporated in a flat insulating profile
    • 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
    • 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
    • H01B7/08—Flat or ribbon cables
    • H01B7/0861—Flat or ribbon cables comprising one or more screens
    • 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
    • H01B7/08—Flat or ribbon cables
    • H01B7/0869—Flat or ribbon cables comprising one or more armouring, tensile- or compression-resistant elements
    • 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
    • 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
    • H01B7/187—Sheaths comprising extruded non-metallic layers
    • 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
    • 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
    • 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
    • H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
    • H01B7/328—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising violation sensing means

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  • Insulated Conductors (AREA)

Abstract

The invention discloses a high-flame-retardance high-shielding torsion-resistant cable which comprises a protective sleeve, a first detection tube, a second detection tube, a cable core main body, a first protective layer and a second protective layer, wherein the first detection tube, the second detection tube, the cable core main body, the first protective layer and the second protective layer extend along the length direction of the cable and are all positioned in the protective sleeve; the first protective layer and the second protective layer respectively comprise a base layer and a plurality of spikes positioned on the base layer, and the first detection tube and the second detection tube respectively comprise a plurality of unit tubes and a plurality of connecting tubes distributed along the length direction of the cable. The cable provided by the invention has the advantages of good pressure resistance, torsion resistance, insulation and flame retardant properties, capability of avoiding being bitten and long service life.

Description

High-flame-retardant high-shielding torsion-resistant cable
Technical Field
The invention relates to the field of cables, in particular to a high-flame-retardant high-shielding torsion-resistant cable.
Background
The wire and cable is used for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion. A wire cable in a broad sense, also referred to as a cable for short, refers to an insulated cable, which can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer jackets, the cable may also have additional conductors without insulation. According to different use requirements and use occasions, the requirements on flame retardant, insulation and shielding performances of the cable are not needed, and the cable is also in danger of being bitten by rat termites in some environments, so the durability requirement of the cable is higher, and the existing cable can not meet all the use requirements sometimes.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects that the twisting and biting cause great damage to the long-term use of the cable, the following scheme is designed.
The technical scheme is as follows: a cable comprises a protective sleeve, a first detection tube, a second detection tube, a cable core main body, a first protective layer and a second protective layer, wherein the first detection tube, the second detection tube, the cable core main body, the first protective layer and the second protective layer extend along the length direction of the cable and are positioned in the protective sleeve, the cable core main body comprises an outer protective layer and a plurality of core wires which are positioned in the outer protective layer and arranged in a row, and the core wires sequentially comprise conductors, insulating layers, shielding layers, flame-retardant layers, armor layers and inner protective layers from inside to outside; the cable core main body is rectangular with arc-shaped grooves at two ends, the cable core main body comprises a first side face, a second side face, a third side face and a fourth side face, the first side face and the second side face are opposite, the third side face and the fourth side face are opposite, a first groove with an arc-shaped cross section is arranged at the first side face, a second groove with an arc-shaped cross section is arranged at the second side face, the first detection tube is abutted against the first groove, and the second detection tube is abutted against the second groove; the first protective layer and the second protective layer respectively comprise a base layer and a plurality of sharp spines positioned on the base layer, the base layer of the first protective layer is abutted against the third side face of the cable core main body, and the base layer of the second protective layer is abutted against the fourth side face of the cable core main body; first, two are detected the pipe and are all included a plurality of unit pipes that distribute along cable length direction, the both ends of unit pipe are sealed, and connect through the connecting pipe between two adjacent unit pipes, and every connecting pipe department has a check valve, and first, two are detected the installation direction of all check valves in the pipe the same, still connect through the perforating hole between the surface of every unit intraduct and protective sheath, install the air cock in the perforating hole.
Preferably, the unit tube includes an inner tube layer and an anti-bite layer surrounding the inner tube layer, the anti-bite layer having capsaicin nanocapsules therein; the outer surface of the protection tube is coated with capsaicin.
Preferably, the outer diameters of the plurality of core wires are equal, the outer diameters of the first and second detection tubes are equal, and the outer diameter of the first detection tube is larger than the outer diameters of the core wires.
Preferably, the outer profile of the cross-section of protective sheath includes first pitch arc, first straight line, second pitch arc and the second straight line that connects gradually, the second straight line is connected with first pitch arc, first, two straight lines are parallel to each other and length equals, the diameter of the circle that first pitch arc and second pitch arc correspond equals, the diameter of the circle that first pitch arc corresponds is less than the distance between first, the second straight line.
Preferably, the flame retardant layer is a low-smoke halogen-free flame retardant layer, the insulating layer is a polyethylene insulating layer, and the protective shielding layer is a tinned metal wire shielding layer.
Preferably, the protective sheath is formed by extrusion molding of polyethylene material or nylon material.
Preferably, the lengths of all the tube units in the first detection tube and the second detection tube are equal and are both larger than 1.5 meters; all the connecting pipes in the first detection pipe and the second detection pipe are equal in length and smaller than 10 cm.
Preferably, the number of the core wires is four or more.
Preferably, in the first and second detection tubes, the number of the unit tubes is one more than that of the connection tubes.
Preferably, the inner tube layer is made of rubber, and the anti-biting layer is made of a fluororubber material or a polyethylene material; the base layer and the spikes are made of engineering plastics.
Has the advantages that: the cable provided by the invention has the advantages of good pressure resistance, torsion resistance, insulation and flame retardant properties, capability of avoiding being bitten and long service life. And can accurate detection, remove the part that damages, continue the use with remaining cable.
Drawings
FIG. 1 is a schematic transverse cross-sectional view of a cable;
FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a schematic diagram of a cable core body;
FIG. 4 is a schematic diagram of a reverse test procedure.
Reference numerals: 1 protecting a tube; 1.1 a first arc; 1.2 second arc; 1.3 a first straight line; 1.4 a second straight line; 2, an outer protective layer; 2.1 a conductor; 2.2 an insulating layer; 2.3 a shielding layer; 2.4 flame retardant layer; 2.5 an armor layer; 2.6 inner protecting layer; 3.1 a base layer; 3.2, pricking acutely; 4.1 inner tube layer; 4.2 an anti-bite layer; 6.1 connecting pipe; 6.2 a one-way valve; 7.1 perforating the tube; 7.2 air tap.
Detailed Description
As shown in fig. 1-4, a cable includes a protective sheath, a first detecting tube, a second detecting tube, a cable core main body, a first protective layer and a second protective layer, wherein the first detecting tube, the second detecting tube, the cable core main body, the first protective layer and the second protective layer all extend along a length direction of the cable and are all located in the protective sheath, the cable core main body includes an outer sheath 2 and a plurality of core wires located in the outer sheath 2 and arranged in a row, and the core wires sequentially include a conductor 2.1, an insulating layer 2.2, a shielding layer 2.3, a flame retardant layer 2.4, an armor layer 2.5 and an inner sheath 2.6 from inside to outside; the cable core main body is rectangular with arc-shaped grooves at two ends, the cable core main body comprises a first side face, a second side face, a third side face and a fourth side face, the first side face and the second side face are opposite, the third side face and the fourth side face are opposite, a first groove with an arc-shaped cross section is arranged at the first side face, a second groove with an arc-shaped cross section is arranged at the second side face, the first detection tube is abutted against the first groove, and the second detection tube is abutted against the second groove; the first protective layer and the second protective layer respectively comprise a base layer 3 and a plurality of sharp spines 3.1 positioned on the base layer, the base layer 3 of the first protective layer is abutted against the third side face of the cable core main body, and the base layer 3 of the second protective layer is abutted against the fourth side face of the cable core main body; first, two are detected the pipe and are all included a plurality of unit pipes that distribute along cable length direction, the both ends of unit pipe are sealed, and connect through connecting pipe 6.1 between two adjacent unit pipes, and every connecting pipe department has a check valve 6.2, and first, two are detected the installation direction of all check valves in the pipe and are the same, still connect through perforating hole 7.1 between the surface of every unit intraduct and protective sheath, install air cock 7.2 in the perforating hole 7.1.
The unit tube comprises an inner tube layer 4.1 and a bite-preventing layer 4.2 surrounding the inner tube layer, wherein capsaicin nanocapsules are arranged in the bite-preventing layer 4.2; the outer surface of the protection tube is coated with capsaicin. The outer diameters of the core wires are equal, the outer diameters of the first detection pipe and the second detection pipe are equal, and the outer diameter of the first detection pipe is larger than the outer diameter of the core wires. The outer profile of the cross-section of protective sheath is including the first pitch arc 1.1, first straight line 1.3, second pitch arc 1.2 and the straight line 1.4 of second that connect gradually, second straight line 1.4 and first pitch arc 1.1 are connected, first, two straight lines are parallel to each other and length equals, the diameter of the circle that first pitch arc 1.1 and second pitch arc 1.2 correspond equals, the diameter of the circle that first pitch arc 1.1 corresponds is less than the distance between first, the two straight lines. The flame-retardant layer 2.4 is a low-smoke halogen-free flame-retardant layer, the insulating layer 2.2 is a polyethylene insulating layer, and the protective shielding layer 2.3 is a tinned metal wire shielding layer. The protective sleeve is made of polyethylene materials or nylon materials through extrusion molding. The lengths of all the pipe units in the first detection pipe and the second detection pipe are equal and are greater than 1.5 meters; all the connecting pipes in the first detection pipe and the second detection pipe are equal in length and smaller than 10 cm. The number of the core wires is more than or equal to four. The inner pipe layer is made of rubber, and the anti-biting layer is made of a fluororubber material or a polyethylene material; the base layer and the spikes are made of engineering plastics.
When the cable is manufactured, the cable core main body, the first protection layer, the second protection layer, the first detection tube and the second detection tube are manufactured, and then the cable core main body, the first protection layer, the second protection layer, the first detection tube and the second detection tube are placed in relative positions and are extruded to form the protection sleeve. Then, a through hole is processed on each unit pipe, and an air tap is installed at the through hole. When the cable core main body is processed, a plurality of core wires are processed firstly, and then the plurality of core wires are arranged in a row to form an outer protective layer through extrusion molding.
The cable is flat overall and has strong torsion resistance, and the cable core main body has shielding, insulating, flame-retardant and armor functional layers, so that the cable has strong overall insulating, flame-retardant and shielding performances and high cable strength. The upper surface and the lower surface are provided with a first protective layer and a second protective layer, the two sides are provided with a first detection tube and a second detection tube, and the sharp pricks and the capsaicin enable the cable not to be bitten easily.
The cable of the invention is characterized in that all the check valves are communicated in the A-B direction and not communicated in the B-A direction due to the design of the detection tube, such as the first detection tube. The positive detection is firstly carried out, one detection tube closest to the end A is inflated, the inflation device with the air pressure detection device is used for inflating, and if the air pressure can reach a set value, it is indicated that any unit tube in the first detection tube is not bitten. No reverse detection is required. If the set point is not reached during forward sensing, then a cell tube is broken. Then a reverse test is required at this point.
During reverse detection, firstly inflating the air tap of the unit pipe closest to the B end, if the air pressure can reach a set value, indicating that the unit pipe closest to the B end is not damaged, then inflating the unit pipe close to the B end, if the air pressure can reach the set value, indicating that the unit pipe close to the B end is not damaged, and then inflating the air tap of the unit pipe close to the B end.
And if the air tap of the unit pipe closest to the end B is inflated and does not reach the set value, the unit pipe closest to the end B is damaged, the unit pipe closest to the end B is cut off, the unit pipe closest to the end B after cutting off is sealed, the unit pipe closest to the end B after cutting off is continuously inflated, and whether the unit pipe is damaged or not is detected.
And if the unit pipe close to the second end B is inflated, and the air pressure does not reach the set value, indicating that the unit pipe close to the second end B is damaged, cutting off the unit pipe close to the second end B, closing the end part of the unit pipe close to the third end B, and inflating the unit pipe.
The specific process of reverse detection can refer to fig. 4, where the cable closest to the B-end is referred to as B1, the cable next to the B-end is referred to as B2, and so on. By such reverse detection, all the broken unit tubes can be picked out. The general principle is that if the air pressure does not reach the set value in the current inflation, the inflated unit pipe is damaged.
After reverse detection, the original cable may be cut into several sections, and at this time, the section with the damaged unit tube is removed (if the unit tubes in the first and second detection tubes of the section are not damaged, the section is not damaged), and the cable joint is used to connect the cable with the undamaged unit tube for continuous use. During manufacturing, the length of each unit tube is not suitable to be too short, and in addition, due to the anti-biting function of capsaicin, the stimulation can form a reflex mechanism in the brains of the rats and the ants to avoid further biting the cables, so that in actual use, reverse detection is less needed. Even if a certain section of cable is broken, the section can be cut off, and the rest of cables can be connected by using the cable joint for continuous use.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

Claims (9)

1. A high-flame-retardance high-shielding torsion-resistant cable is characterized by comprising a protective sleeve, a first detection tube, a second detection tube, a cable core main body, a first protective layer and a second protective layer, wherein the first detection tube, the second detection tube, the cable core main body, the first protective layer and the second protective layer extend along the length direction of the cable and are all positioned in the protective sleeve; the cable core main body is rectangular with arc-shaped grooves at two ends, the cable core main body comprises a first side face, a second side face, a third side face and a fourth side face, the first side face and the second side face are opposite, the third side face and the fourth side face are opposite, a first groove with an arc-shaped cross section is arranged at the first side face, a second groove with an arc-shaped cross section is arranged at the second side face, the first detection tube is abutted against the first groove, and the second detection tube is abutted against the second groove; the first protective layer and the second protective layer respectively comprise a base layer and a plurality of sharp spines positioned on the base layer, the base layer of the first protective layer is abutted against the third side face of the cable core main body, and the base layer of the second protective layer is abutted against the fourth side face of the cable core main body; first, two are detected the pipe and are all included a plurality of unit pipes that distribute along cable length direction, the both ends of unit pipe are sealed, and connect through the connecting pipe between two adjacent unit pipes, and every connecting pipe department has a check valve, and first, two are detected the installation direction of all check valves in the pipe the same, still connect through the perforating hole between the surface of every unit intraduct and protective sheath, install the air cock in the perforating hole.
2. The high flame retardant, high shielding and torsion resistant cable of claim 1, wherein the unit tube comprises an inner tube layer and an anti-bite layer surrounding the inner tube layer, the anti-bite layer having capsaicin nanocapsules therein; the outer surface of the protection tube is coated with capsaicin.
3. The high flame retardant, high shielding and torsion resistant cable of claim 1, wherein the plurality of core wires have the same outer diameter, the first and second sensing tubes have the same outer diameter, and the first sensing tube has an outer diameter larger than the outer diameter of the core wires.
4. The high flame retardant, high shielding and torsion resistant cable according to claim 3, wherein the outer contour of the cross section of the protective sheath comprises a first arc line, a first straight line, a second arc line and a second straight line which are connected in sequence, the second straight line is connected with the first arc line, the first and second straight lines are parallel to each other and have the same length, the diameter of the circle corresponding to the first arc line and the second arc line is equal, and the diameter of the circle corresponding to the first arc line is smaller than the distance between the first and second straight lines.
5. The high flame retardant, high shielding and torsion resistant cable according to claim 1, wherein the flame retardant layer is a low smoke zero halogen flame retardant layer, the insulating layer is a polyethylene insulating layer, and the protective shielding layer is a tin-plated metal wire shielding layer.
6. The high flame retardant, high shielding and torsion resistant cable of claim 1, wherein the protective sheath is formed by extrusion molding of polyethylene material or nylon material.
7. The high flame retardant, high shielding and torsion resistant cable according to claim 1, wherein all the tube units in the first and second detection tubes are equal in length and are greater than 1.5 m; all the connecting pipes in the first detection pipe and the second detection pipe are equal in length and smaller than 10 cm.
8. The high flame retardant, high shielding and torsion resistant cable of claim 1, wherein the number of said core wires is four or more.
9. The high flame retardant, high shielding and torsion resistant cable of claim 1, wherein the inner tube layer is made of rubber, and the anti-bite layer is made of a fluororubber material or a polyethylene material; the base layer and the spikes are made of engineering plastics.
CN202010204514.4A 2020-03-21 2020-03-21 High-flame-retardant high-shielding torsion-resistant cable Active CN111599517B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040016566A1 (en) * 2002-07-25 2004-01-29 Sylvia Joseph M. Detectable cable tape
US9922756B1 (en) * 2007-11-06 2018-03-20 Encore Wire Corporation Electrical cables with non-metallic jackets and methods of fabricating the same
CN207602268U (en) * 2017-12-28 2018-07-10 深圳市赛鸿通电线科技有限公司 Rodent-resistant cable
CN209000613U (en) * 2018-09-26 2019-06-18 安徽省绿环电气股份有限公司 A kind of high fire resistance buried cable
CN110289134A (en) * 2019-05-20 2019-09-27 扬州曙光电缆股份有限公司 Strong optical fiber composite intelligent cable used for intelligent electric network

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040016566A1 (en) * 2002-07-25 2004-01-29 Sylvia Joseph M. Detectable cable tape
US9922756B1 (en) * 2007-11-06 2018-03-20 Encore Wire Corporation Electrical cables with non-metallic jackets and methods of fabricating the same
CN207602268U (en) * 2017-12-28 2018-07-10 深圳市赛鸿通电线科技有限公司 Rodent-resistant cable
CN209000613U (en) * 2018-09-26 2019-06-18 安徽省绿环电气股份有限公司 A kind of high fire resistance buried cable
CN110289134A (en) * 2019-05-20 2019-09-27 扬州曙光电缆股份有限公司 Strong optical fiber composite intelligent cable used for intelligent electric network

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Denomination of invention: A high flame retardant, high shielding, and torsion resistant cable

Granted publication date: 20210820

Pledgee: Linyi Lanshan District Branch of China Postal Savings Bank Co.,Ltd.

Pledgor: SHANDONG ZHONGMAI CABLE Co.,Ltd.

Registration number: Y2024980005060

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