CN105702350A - Waterproof variable frequency cable with low electromagnetism and resistant to interference - Google Patents

Waterproof variable frequency cable with low electromagnetism and resistant to interference Download PDF

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Publication number
CN105702350A
CN105702350A CN201610267609.4A CN201610267609A CN105702350A CN 105702350 A CN105702350 A CN 105702350A CN 201610267609 A CN201610267609 A CN 201610267609A CN 105702350 A CN105702350 A CN 105702350A
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CN
China
Prior art keywords
layer
cable
composite
conductor
interference
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610267609.4A
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Chinese (zh)
Inventor
曹庆和
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Danyang Zhenglian Intellectual Property Operations Management Co Ltd
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Danyang Zhenglian Intellectual Property Operations Management Co Ltd
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Application filed by Danyang Zhenglian Intellectual Property Operations Management Co Ltd filed Critical Danyang Zhenglian Intellectual Property Operations Management Co Ltd
Priority to CN201610267609.4A priority Critical patent/CN105702350A/en
Publication of CN105702350A publication Critical patent/CN105702350A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/295Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/028Power cables with screens or conductive layers, e.g. for avoiding large potential gradients with screen grounding means, e.g. drain wires

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  • Insulated Conductors (AREA)

Abstract

The invention relates to a waterproof variable frequency cable with low electromagnetism and resistant to interference, belonging to the technical field of a cable. The waterproof variable frequency cable comprises a cable core and a sheath on the cable core and is characterized in that the cable core is formed by twisting a plurality of insulation wire cores, grounding lines and a water blocking filling material, each insulation wire core comprises a conductor and a composite insulation layer arranged outside the conductor, a flame-retardant gluing glass cloth belt layer is arranged outside the insulation wire core, a phase split shielding layer made of a steel-plastic composite strip is arranged outside the glass cloth belt layer, a composite wrapping layer is arranged outside the cable core, a composite total shielding layer is arranged outside the composite wrapping layer, a sheath layer is arranged outside the composite total shielding layer and comprises an inner sheath and an outer sheath, an armor layer is arranged between the inner sheath and the outer sheath, and the composite insulation layer is formed by jointly extruding a conductor shielding layer, an insulation layer and an insulation shielding layer. The waterproof variable frequency cable has the advantages of environmental protection, flame retardance, high electromagnetic interference resistant capability, excellent electrical performance and long service performance, the environmental protection of the cable is ensured as well as flame is prevented, and the service lifetime of the cable is prolonged.

Description

The anti-interference water proof type frequency-changing cable of low electromagnetism
Technical field
The present invention relates to the structure of a kind of cable, the anti-interference water proof type frequency-changing cable of especially a kind of low electromagnetism, belong to field of cable technology。
Background technology
The each side equipment that variable-frequency control technique comprises, such as frequency conversion motor, converter etc., has reached at a relatively high level both at home and abroad。But as the connection cable between frequency conversion motor and converter, namely converter service cable, but not high in the level of development of China。Current converter connects the widely used crosslinked polyetylene insulated metal shielding type cable of cable, this cable still may be used in common applications, but some special occasions in industrial and mining establishment, when occasion as high in high temperature, greasy dirt, long length connection use and EMC Requirements uses, arise that following problem:
1, insulation pulse surge punctures。The frequency-tuning range of variable-frequency power sources is wider, no matter frequency height, there is the waveform profiles of a basic frequency, it contains many higher hamonic waves, and as a kind of traveling wave through multiple reflections, amplitude superposition can reach running voltage several times, cable is more long, amplitude is more high, and cable bears this pulse surge for a long time, it is easy to cause cable insulation aging, puncture。Common frequency-changing cable does not make special insulating Design for this situation, so cable is easy to occur that insulating thermal aging accelerates after application a period of time, the problem such as even punctures。When using length longer particularly in cable, in cable, overvoltage, overcurrent are more serious, generate heat also more serious, it is possible to make cable quickly breakdown。
2, corrosion-and high-temp-resistant is poor。Some special occasions in the industrial and mining establishment such as steel mill, chemical plant, have that ambient temperature is high and greasy dirt, chemicals attack are strong, if using general frequency-changing cable in these occasions, cable is in high temperature, high pressure, oil-containing and the condition containing chemical corrosivity material and works, after being subject to the erosion of the multiple adverse circumstances factors such as electricity, heat, corrosion, quickly can cause cable serious aging, even burn。
3, sophisticated electronics around and electrical metering are detected the interference of protection equipment by frequency electromagnetic waves。The frequency conversion motor power used in the industrial and mining establishment such as steel mill, chemical plant is all relatively big, connects the cable length between frequency conversion motor and variable-frequency power sources longer, and cable is exactly operationally the frequency electromagnetic waves effective carrier to emission。Its screen layer of common frequency-changing cable is not past special setting; can not effectively shield electromagnetic wave, sophisticated electronics around and electrical metering can be detected protection equipment and produce interference, reduce its precision; make regulable control cannot be carried out time serious, even can cause damage。
Summary of the invention
It is an object of the invention to for case above, by rigorous structural design and strict technology controlling and process, it is provided that the anti-interference water proof type frequency-changing cable of a kind of low electromagnetism。
It is an object of the invention to be achieved through the following technical solutions: the anti-interference water proof type frequency-changing cable of low electromagnetism, including the sheath arranged on cable core, cable core, it is characterized in that, described cable core by many insulated wire cores, earth lead, the inserts that blocks water is stranded forms, described insulated wire cores is made up of conductor, the composite insulation layer being placed in outside conductor;Described insulated wire cores is externally provided with fire-retardant painting glue-type glass cloth tape layer, and glass cloth belt is externally provided with point phase screen layer that composite steel-plastic belt is made;
Described cable core is externally provided with composite wrapping tape layer, and composite wrapping tape layer is externally provided with the total screen layer of compound;Described restrictive coating is placed in outside the total screen layer of compound, is made up of inner sheath, oversheath, is provided with armor between inner sheath, oversheath;Described composite insulation layer by conductor shield, insulating barrier, insulation screen is three-layer co-extruded constitutes。
The drainage thread being made up of a tinned copper wire it is provided with in described cable core。
Described composite wrapping tape layer is expanded belting layer by being placed in blocking water outside cable core, constitutes around wrapping in the flame retardant polyester belt expanded outside band that blocks water。
The total screen layer of described compound is made up of the tincopper fuse wire braided armor being placed in outside composite wrapping tape layer, copper strips lapping layer。
Described inner sheath is extruded on the total screen layer of compound by fire-retardant cross-linking radiation polyolefin and constitutes。
Described oversheath is that low-smoke halogen-free polyethylene material is made。
Described armor is made up of outside inner sheath around wrapping in slim Stainless Steel band。
Described conductor is tinned copper conductor。
The described inserts that blocks water is inorganic high fire-retardance glass fiber rope。
The present invention is when meeting the regulations such as product electric property, mechanical performance, compared with traditional frequency conversion device cable, more reasonable structure, performance are more stable, improve cable shield performance and used life, and other electric equipments will not be interfered while having stronger capacity of resisting disturbance by cable。
Owing to this type of cable uses condition very more special, the design feature of this cable is to comprise a point phase screen layer, the total screen layer of compound, the ability that the capacity of resisting disturbance making cable is strong, disturb other cables is weak, it is ensured that cable self also ensure that when other cables laid around this cable use while using safety safe and reliable。
Conductor shield, insulating barrier, insulation screen adopt three-layer co-extruded technology, it is achieved on-line measurement, and speed of production is fast, constant product quality, it is ensured that insulation obtains full cross-linked, it is ensured that the electric property of cable insulation and mechanical performance。
Conductor adopts that tinned wird is stranded forms, and plates one layer of tin layers in copper line surface, it is possible to be effectively protected conductor when cable works in hot environment and oxidation occur, conductor can also be protected to avoid the erosion by greasy dirt and chemical substance simultaneously。Tape for cables is fire-retardant painting glue-type glass cloth tape, makes fire resistance relatively reliable。The effect of drainage thread makes cable metallic screens layer continuous, it is prevented that phenomenon separated in screen layer occurs, and can conduct leakage current, short circuit current, it is simple to ground connection。Compound copper-plastics band, makes shield effectiveness relatively reliable。Namely the wrapped shielding of compound copper-plastics band has the shielding properties of copper strips, again containing moulding band mechanical stress, makes screen layer more firm, reliable。
Environmental protection of the present invention, fire-retardant, anti-electromagnetic interference capability is strong, superior electrical property, long service life, ensure that the feature of environmental protection of cable while fire-retardant, improves cable service life。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
In figure: 1 earth lead, 2 block water inserts, 3 conductors, 4 fire-retardant painting glue-type glass cloth tape layers, 5 points of phase screen layers, 6 inner sheaths, 7 oversheaths, 8 armors, 9 conductor shields, 10 insulating barriers, 11 insulation screens, 12 drainage threads, 13 block water expansion belting layer, 14 flame retardant polyester belts, 15 tincopper fuse wire braided armors, 16 copper strips lapping layers。
Detailed description of the invention
The anti-interference water proof type frequency-changing cable of low electromagnetism, including the sheath arranged on cable core, cable core, cable core by many insulated wire cores, earth lead 1, block water that inserts 2 is stranded to be formed。
Insulated wire cores is made up of conductor 3, the composite insulation layer being placed in outside conductor;Insulated wire cores is externally provided with fire-retardant painting glue-type glass cloth tape layer 4, and glass cloth belt is externally provided with point phase screen layer 5 that composite steel-plastic belt is made。
Cable core is externally provided with composite wrapping tape layer, and composite wrapping tape layer is externally provided with the total screen layer of compound, and restrictive coating is placed in outside the total screen layer of compound, is made up of inner sheath 6, oversheath 7, is provided with armor 8 between inner sheath, oversheath。Composite insulation layer by conductor shield 9, insulating barrier 10, insulation screen 11 is three-layer co-extruded constitutes。
Being provided with the drainage thread 12 being made up of a tinned copper wire in cable core, composite wrapping tape layer is expanded belting layer 13 by being placed in blocking water outside cable core, constitutes around wrapping in the flame retardant polyester belt 14 expanded outside band that blocks water。The total screen layer of compound is made up of the tincopper fuse wire braided armor 15 being placed in outside composite wrapping tape layer, copper strips lapping layer 16。
Inner sheath is extruded on the total screen layer of compound by fire-retardant cross-linking radiation polyolefin and constitutes, and oversheath is that low-smoke halogen-free polyethylene material is made, and armor is made up of outside inner sheath around wrapping in slim Stainless Steel band。
Conductor is tinned copper conductor, and the inserts that blocks water is inorganic high fire-retardance glass fiber rope。

Claims (9)

1. the anti-interference water proof type frequency-changing cable of low electromagnetism, including the sheath arranged on cable core, cable core, it is characterized in that, described cable core by many insulated wire cores, earth lead (1), the inserts that blocks water (2) is stranded forms, described insulated wire cores is made up of conductor (3), the composite insulation layer being placed in outside conductor;Described insulated wire cores is externally provided with fire-retardant painting glue-type glass cloth tape layer (4), and glass cloth belt is externally provided with point phase screen layer (5) that composite steel-plastic belt is made;
Described cable core is externally provided with composite wrapping tape layer, and composite wrapping tape layer is externally provided with the total screen layer of compound;Described restrictive coating is placed in outside the total screen layer of compound, is made up of inner sheath (6), oversheath (7), is provided with armor (8) between inner sheath, oversheath;Described composite insulation layer by conductor shield (9), insulating barrier (10), insulation screen (11) is three-layer co-extruded constitutes。
2. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, is provided with the drainage thread (12) being made up of a tinned copper wire in described cable core。
3. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, described composite wrapping tape layer is expanded belting layer (13) by being placed in blocking water outside cable core, constitutes around wrapping in the flame retardant polyester belt (14) expanded outside band that blocks water。
4. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, the total screen layer of described compound is made up of the tincopper fuse wire braided armor (15) being placed in outside composite wrapping tape layer, copper strips lapping layer (16)。
5. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, described inner sheath is extruded on the total screen layer of compound by fire-retardant cross-linking radiation polyolefin and constitutes。
6. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, described oversheath is that low-smoke halogen-free polyethylene material is made。
7. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, described armor is made up of outside inner sheath around wrapping in slim Stainless Steel band。
8. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, described conductor is tinned copper conductor。
9. the anti-interference water proof type frequency-changing cable of low electromagnetism according to claim 1, is characterized in that, described in the inserts that blocks water be inorganic high fire-retardance glass fiber rope。
CN201610267609.4A 2016-04-27 2016-04-27 Waterproof variable frequency cable with low electromagnetism and resistant to interference Pending CN105702350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610267609.4A CN105702350A (en) 2016-04-27 2016-04-27 Waterproof variable frequency cable with low electromagnetism and resistant to interference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610267609.4A CN105702350A (en) 2016-04-27 2016-04-27 Waterproof variable frequency cable with low electromagnetism and resistant to interference

Publications (1)

Publication Number Publication Date
CN105702350A true CN105702350A (en) 2016-06-22

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Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105957630A (en) * 2016-06-27 2016-09-21 乔俊擎 High-voltage power transmission power cable
CN106205841A (en) * 2016-06-29 2016-12-07 戴亮祥 A kind of high voltage power cable
CN113552680A (en) * 2021-07-19 2021-10-26 江苏万华通信科技有限公司 Anti-compression armor layer stranded optical cable with anti-electromagnetic interference performance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102751033A (en) * 2012-07-27 2012-10-24 山东华凌电缆有限公司 Variable frequency cable for transformer station
CN203026251U (en) * 2012-12-10 2013-06-26 南洋电缆集团有限公司 Water-proof and oil contamination-resistant 10kV medium-pressure frequency converter cable
CN203415302U (en) * 2013-08-19 2014-01-29 宝胜科技创新股份有限公司 Slurry-resistant cable for frequency converter
CN203966657U (en) * 2014-07-01 2014-11-26 安徽太平洋电缆股份有限公司 Aluminium alloy core medium voltage frequency converter private cable
CN204215792U (en) * 2014-11-26 2015-03-18 安徽新华电缆(集团)有限公司 A kind of cold-resistant flexible frequency-changing cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102751033A (en) * 2012-07-27 2012-10-24 山东华凌电缆有限公司 Variable frequency cable for transformer station
CN203026251U (en) * 2012-12-10 2013-06-26 南洋电缆集团有限公司 Water-proof and oil contamination-resistant 10kV medium-pressure frequency converter cable
CN203415302U (en) * 2013-08-19 2014-01-29 宝胜科技创新股份有限公司 Slurry-resistant cable for frequency converter
CN203966657U (en) * 2014-07-01 2014-11-26 安徽太平洋电缆股份有限公司 Aluminium alloy core medium voltage frequency converter private cable
CN204215792U (en) * 2014-11-26 2015-03-18 安徽新华电缆(集团)有限公司 A kind of cold-resistant flexible frequency-changing cable

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105957630A (en) * 2016-06-27 2016-09-21 乔俊擎 High-voltage power transmission power cable
CN105957630B (en) * 2016-06-27 2017-09-26 江西太平洋电缆集团有限公司 A kind of high voltage power transmission power cable
CN106205841A (en) * 2016-06-29 2016-12-07 戴亮祥 A kind of high voltage power cable
CN113552680A (en) * 2021-07-19 2021-10-26 江苏万华通信科技有限公司 Anti-compression armor layer stranded optical cable with anti-electromagnetic interference performance

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Application publication date: 20160622