CN208834768U - A kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment - Google Patents
A kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment Download PDFInfo
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- CN208834768U CN208834768U CN201821326334.8U CN201821326334U CN208834768U CN 208834768 U CN208834768 U CN 208834768U CN 201821326334 U CN201821326334 U CN 201821326334U CN 208834768 U CN208834768 U CN 208834768U
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Abstract
A kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, cable from internal layer to outer layer successively respectively include: the super flexible conductor of cable, insulating layer, 3+3 cable core structure, the fire-retardant belting layer of cable core, anti-electromagnetic interference shielding layer, separation layer, cable run monitoring structure, oil resistant add flexi-ring to protect outer jacket.The utility model realizes that the service life of frequency-changing cable increases；Oil resistant；Prevent inside and outside boundary's electromagnetic interference；Fire-retardant and monitoring function, it may be implemented to eliminate influence of the higher hamonic wave generated in frequency conversion device system to cable neutrality core by using 3+3 cable core structure, cable bend number is greatly increased using super flexible conductor structure, greatly increases frequency-changing cable service life；Cable core band flame-retardant layer, cable run monitoring structure and oil resistant add flexi-ring to protect the design of outer jacket and increasing also to substantially increase that frequency-changing cable fortuitous events such as lubricant grease leakage in fire and frequency conversion system transmission process are safe and reliable, ability of stable operation simultaneously.
Description
Technical field
The utility model patent is related to a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, main to use
Between variable-frequency power sources and variable-frequency motor in the cable and voltage rating 1kV and electric line below of connection, make defeated
Power transmission can be used.It is particularly suitable for the industries such as papermaking, metallurgy, intermetallic composite coating, mine, railway and food processing.The cable has super
Flexibility prevents high frequency shaft current from generating, reduces to outside electromagnetic interference and monitoring oil resistant flame-retardant and many other feature, compared to biography
Cable for frequency changer of uniting is capable of the injury of Eliminate highter harmonic docking zero curve core, safety and stability in the environment of lubricant grease leakage
Work, while the super soft feature of the cable can greatly improve cable number of bends increase cable service life, the electricity
Function for monitoring specific to cable can monitor the defect occurred in the operational process of cable, the design of the cable environmental protection flame retardant structure
The safety guarantee using system can further be improved.Belong to field of cable technology.
Background technique
The energy-saving effect of converter plant is fairly obvious in modern industry, and frequency control motor is used in heavy-duty motor,
Entire generating set can economize on electricity 30%.And using after frequency control, the soft start of motor is realized, motor stable working is made,
Motor bearings abrasion reduces, and extends motor service life and maintenance period.Therefore, variable-frequency control technique is in petroleum, metallurgy, hair
The industrial aspects such as electricity, railway, mine are widely used in a variety of applications.
As the cable of connection between variable-frequency power sources and variable-frequency motor, also with converter plant extensive use and answer
With, since the frequency range born in real work is 30~300HZ, frequency-changing cable need to have offset higher hamonic wave,
Reduce the features such as interfering with each other with external environment.Common 3+1 type frequency-changing cable works as three-phase in complete three-phase power supply system
When current balance type, the electric current of neutral core is zero；When higher hamonic wave generates, by the multiple reflections of cable, will occur
To this wave crest and wave crest or trough and the superimposed chance of trough, the longer stacking machine of cable more can show also brighter by multilist
It is aobvious.In addition this big capacitor of cable itself just plays the role of amplification to higher hamonic wave, for 3+1 type cable, higher hamonic wave
The current component of generation is in neutral conductor in-core without phase difference, and so electric current will be superimposed as the several times of former component, the neutral conductor
Core will soon be breakdown under high-frequency impulse.So this cable uses 3+3 structure (3+3 equal sections of phase cross-section power wire cores
Face neutrality core) it can effectively balance out influence of the higher hamonic wave to neutral core.
Some in converter plant use process need to move back and forth, common frequency-changing cable since conductor softness is limited,
Its number of bends is also limited, so service life is relatively undesirable, while under some particular surroundings, frequency converter is past using system
The past presence along with some column unstable factors, such as the leakage of lubricant grease, cable cover(ing) breakage etc. in transmission process, this
Just to common frequency-changing cable, more stringent requirements are proposed.For example whether oil resistivity, monitoring cable are intact etc..
So resolving the work of the ultra-flexible energy of frequency-changing cable, oil resistivity, monitoring property is particularly important.
Summary of the invention
The utility model patent is mainly to provide a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment,
For substituting common frequency-changing cable, especially used 3+3 cable core structure may be implemented to eliminate and generate in frequency conversion device system
Influence of the higher hamonic wave to cable neutrality core.The super flexible conductor of cable is led using the 6th class in GB/T 3956-2008
Body is compared to common frequency-changing cable with more soft characteristic, can greatly improve the number of bends of cable, using the longevity
Life；And it is protected outside oil resistant in view of frequency converter is specially designed using the leakage of lubricant grease that may be present during drive system
Layer structure, the structure make cable under grease environment can with long-term stable operation, considerably increase using system reliability and
Safety；Situations such as the fire that may occur, cable have high fire-retardance belting layer structure, which can occur fire
In the case where make cable continue stable operation certain time, thus give people escape chance.Oil resistant structure and flame retarding construction are all adopted
A large amount of pollutants will not be generated in the case of being abnormal with environment-friendly materials, really realize safe and environment-friendly feature.It is same with this
When specific cable run monitoring structure oversheath that cable can be monitored in real time whether have damaged and defect.
The purpose of the utility model patent is achieved in that a kind of monitoring fire-retardant for the super soft environment-protective of resistance to oil environment
Frequency-changing cable, cable successively respectively include the super flexible conductor of cable, insulating layer, 3+3 cable core structure, cable core from internal layer to outer layer
Fire-retardant belting layer, anti-electromagnetic interference shielding layer, separation layer, cable run monitoring structure, oil resistant add flexi-ring to protect outer jacket.
The super flexible conductor of cable uses the structure of the 6th class conductor in GB/T 3956-2008.
The insulating layer of cable uses extruded insulation material structure.
The 3+3 cable core structure of cable is formed using stranded mode, as not rounded in stranding process, using filling material, is filled out
Fill rounding.
The fire-retardant belting layer of the cable core of cable is formed using high fire-retardance band is wrapped.
The anti-electromagnetic interference shielding layer of cable is using shielding material braiding, wrapped or extrude mode and form.
The separation layer of cable is extruded using flame retardant plastics or rubber.
The cable run monitoring structure of cable is formed by braiding soft copper flat wire spiral winding.
The oil resistant of cable adds flexi-ring guarantor's outer jacket to extrude using oil resistant environmentally-friendly plastic or rubber.
The super flexible conductor monofilament should use electrician's circular copper wire when insulating materials is polyvinyl chloride；Work as insulation material
Material should be using wrapped one layer of polyester belt outside tin-plating round copper wire or the stranded conductor of electrician's circular copper wire when being rubber.
The insulating layer is divided into plastic insulation and rubber insulation according to the difference of insulating materials.
The 3+3 cable core structure it is twisted by 3 phase cross-section power wire cores and 3 phase cross-section neutral conductor core arranged adjacents and
At, and twisting pitch is not more than 20 times of laying up diameter.
Double-layer overlapping is wrapped forms for high fire-retardance band of the fire-retardant belting layer of the cable core using oxygen index (OI) greater than 50, and puts up
Rate is not less than 30%.
The anti-electromagnetic interference shielding layer can be used electrician with circular copper wire weave form or metal tape it is wrapped form and
It is formed using semi-conductive shielding material is extruded, wherein count is not less than 85% when using weaving manner；If metal tape is aluminium
When foil, one should be placed in twisted cable core outer layer and be not less than 0.5mm2Beam close conductor.
The cable run monitoring structure is used by two braiding sections as 1.5mm2Braiding soft copper flat wire spiral twine
It is wound on insulation surface, can monitor whether cable jacket has damaged or defect in real time.
The oil resistant adds flexi-ring guarantor's outer jacket to add soft oil resistant plastics or rubber material to form using environmental protection is extruded, Ke Yiti
The fuel tolerance capability of high cable greatly improves the reliability and safety of cable.
A kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment that the utility model patent provides, especially
It is used 3+3 cable core structure, may be implemented to eliminate the higher hamonic wave generated in frequency conversion device system to cable neutrality core
It influences.The super flexible conductor that cable uses is compared to common variable-frequency electric using the 6th class conductor in GB/T 3956-2008
Cable has more soft characteristic, can greatly improve number of bends, the service life of cable；And in view of frequency converter uses
The leakage of lubricant grease that may be present specially designs oil resistant outer jacket structure during drive system, which makes cable in oil
Under alicyclic ring border the reliability and safety using system can be considerably increased with long-term stable operation；For the fire that may occur
Situations such as calamity, cable have high fire-retardance belting layer structure, which can make in the event of a fire cable continue to stablize
Certain time is run, to give people's escape chance.Oil resistant structure and flame retarding construction all use environment-friendly materials, when being abnormal feelings
Under condition, a large amount of pollutants will not be generated, really realize safe and environment-friendly feature.Specific cable run monitoring at the same time
Whether the oversheath that cable can be monitored in real time in structure has damaged and defect.Its application can greatly improve making for frequency-changing cable
With the longevity, while the risk that frequency-changing cable breaks down and destroys in the environment of lubricant grease leaks is eliminated and reducing, with bright
Aobvious effect.
Detailed description of the invention
The utility model patent is described further with embodiment with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model.
Wherein: 1 is super flexible conductor；2 be insulating layer；3 be 3+3 cable core structure；4 be fire-retardant belting layer；5 be that anti-electromagnetism is dry
Disturb shielded layer；6 be separation layer；7 be monitoring core；8 be that oil resistant adds flexi-ring to protect outer jacket.
Specific embodiment
As shown in Figure 1, a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, super flexible conductor (1)
Using the 6th class conductor structure in GB/T 3956-2008, a bundle strand is generally used to form for small bore, for big section
General use first carries out strand bundle strand, then carries out the production technology that strand twists again and produce.Insulating layer (2) is according to use environment
Temperature difference is extruded and layer using corresponding plastics or rubber.Insulated wire cores stranding constitutes 3+3 cable core structure (3), insulating layer (2)
Rounding, closely knit should be filled between the fire-retardant belting layer of cable core (4), generally use gasket for packing or yarn is constituted；It is used according to cable special
Property and condition difference can be using common gasket for packing or yarn, flame resistant filler rope or yarn and block water gasket for packing or yarn, when using hindering
It can go to play the role of longitudinal waterproof gear tide in the use process of cable when water gasket for packing or yarn.Once frequency-changing cable sheath is unexpected
Damage and water inflow, waterproofing rope filled layer water-swellable play a role, and delay and prevent the further immersion of moisture, reduce moisture damage
The length of frequency-changing cable, repairing work and reduction loss after facilitating frequency-changing cable accident.And 3+3 cable core structure is by 3 equal sections
Face power wire core and 3 phase cross-section neutral conductor core arranged adjacents are twisted, and twisting pitch is not more than 20 times of laying up diameter.
Double-layer overlapping is wrapped forms for high fire-retardance band of the fire-retardant belting layer of cable core (4) using oxygen index (OI) greater than 50, and overlap rate is not less than
30%.Anti-electromagnetic interference shielding layer (5), which is woven using electrician with circular copper wire, to be formed or metal tape is wrapped forms and using extruding
Semi-conductive shielding material forms, wherein count is not less than 85% when using weaving manner；If metal tape is aluminium foil, Ying
Twisted cable core outer layer places one and is not less than 0.5mm2Beam close conductor, the purpose is to prevent the inside and outside boundary's electromagnetic signal of cable
It interferes with each other, influences the reliability of whole system.Separation layer (6) is extruded using flame retardant plastics or rubber.Cable
Road monitoring structure (7) is used by two braiding sections as 1.5mm2Braiding soft copper flat wire be spirally wound on separation layer (6) table
Face, can monitor whether cable jacket has damaged or defect in real time.Oil resistant adds flexi-ring to protect outer jacket (8) and is added using environmental protection is extruded
Soft oil resistant plastics or rubber material form, and the fuel tolerance capability of cable can be improved, and greatly improve the reliability and safety of cable.
Super flexible conductor (1), 3+3 cable core structure (3), the fire-retardant belting layer of cable core (4), cable run monitoring structure (7) and
Oil resistant adds the design of flexi-ring guarantor outer jacket (8) and the utility model that bases on practicality a kind of fire-retardant for the super soft environment-protective of resistance to oil environment
Monitor the key of frequency-changing cable, the application of super flexible conductor (1) can greatly improve number of bends, the service life of cable；3+3
Cable core structure (3) may be implemented to eliminate influence of the higher hamonic wave generated in frequency conversion device system to cable neutrality core；Cable core
Fire-retardant belting layer (4) structure can make cable continue stable operation certain time in the event of a fire, to give people
Chance of escaping；Cable run monitoring structure (7) can monitor whether cable jacket has damaged or defect in real time；Oil resistant adds soft
Environmentally friendly outer jacket (8) is protected outside oil resistant in view of the leakage of lubricant grease that may be present in frequency conversion system transmission process specially designs
Layer structure, the structure make cable under grease environment can with long-term stable operation, considerably increase using system reliability and
Safety.So a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment of the utility model compare with commonly
Frequency-changing cable has the characteristics that long service life, the monitoring of oil resistant environmental protection flame retardant.
Claims (6)
1. a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, it is characterised in that: cable is from internal layer to outer
Layer is successively respectively include: the super flexible conductor (1) of cable, insulating layer (2), 3+3 cable core structure (3), the fire-retardant belting layer of cable core
(4), anti-electromagnetic interference shielding layer (5), separation layer (6), cable run monitoring structure (7) and oil resistant add flexi-ring to protect outer jacket (8):
The 3+3 cable core structure (3) is twisted by 3 phase cross-section power wire cores and 3 phase cross-section neutral conductor core arranged adjacents,
And twisting pitch is not more than 20 times of laying up diameter.
2. a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, feature
Be: the super flexible conductor (1) of cable is using the 6th class conductor in GB/T 3956-2008.
3. a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, feature
Be: the fire-retardant belting layer of cable core (4) is formed by high fire-retardance band is wrapped.
4. a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, feature
Be: anti-electromagnetic interference shielding layer (5) is using shielding material braiding, wrapped or extrude mode and form.
5. a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, feature
Be: cable run monitoring structure (7) is 1.5mm by two braiding sections2Braiding soft copper flat wire be spirally wound on separation layer
(6) surface.
6. a kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, feature
Be: oil resistant adds flexi-ring guarantor outer jacket (8) to extrude using oil resistant environmentally-friendly plastic or rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821326334.8U CN208834768U (en) | 2018-08-09 | 2018-08-09 | A kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821326334.8U CN208834768U (en) | 2018-08-09 | 2018-08-09 | A kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208834768U true CN208834768U (en) | 2019-05-07 |
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ID=66309435
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821326334.8U Active CN208834768U (en) | 2018-08-09 | 2018-08-09 | A kind of monitoring frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment |
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| Country | Link |
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| CN (1) | CN208834768U (en) |
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- 2018-08-09 CN CN201821326334.8U patent/CN208834768U/en active Active
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