CN208834769U - A kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment - Google Patents
A kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment Download PDFInfo
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- CN208834769U CN208834769U CN201821326335.2U CN201821326335U CN208834769U CN 208834769 U CN208834769 U CN 208834769U CN 201821326335 U CN201821326335 U CN 201821326335U CN 208834769 U CN208834769 U CN 208834769U
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Abstract
A kind of 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, oil resistant add flexi-ring protect outer jacket.The utility model really realizes that the service life of frequency-changing cable increases；Oil resistant；Prevent inside and outside boundary's electromagnetic interference；Fire-retardant 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 can be greatly increased using super flexible conductor structure, greatly increase frequency-changing cable service life；Cable core band flame-retardant layer 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 frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, is mainly used for becoming
Between frequency power and variable-frequency motor in the cable of connection and voltage rating 1kV and electric line below, make conveying electricity
It can use.It is particularly suitable for the industries such as papermaking, metallurgy, intermetallic composite coating, mine, railway and food processing.The cable has super soft
Property, prevent high frequency shaft current generate, reduce to outside electromagnetic interference and monitoring oil resistant flame-retardant and many other feature, compared to tradition become
Frequency device cable is capable of the injury of Eliminate highter harmonic docking zero curve core, the work of safety and stability in the environment of lubricant grease leakage
Make, while the super soft feature of the cable can greatly improve the number of bends increase cable service life of cable, the cable loop
The design of environment friendly flame-retardant structure can further improve the safety guarantee using system.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, issuable fire etc. in transmission process,
Just to common frequency-changing cable, more stringent requirements are proposed for this.For example whether oil resistivity, anti-flammability are intact etc..
So resolving the ultra-flexible energy of frequency-changing cable, oil resistivity, fire-retardant work are particularly important.
Summary of the invention
The utility model patent is mainly to provide a kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, is used for
Common frequency-changing cable is substituted, especially used 3+3 cable core structure may be implemented to eliminate the high order generated in frequency conversion device system
Influence of the harmonic wave to cable neutrality core.The super flexible conductor of cable is using the 6th class conductor in GB/T 3956-2008, phase
Common frequency-changing cable is compared to more soft characteristic, number of bends, the service life of cable can be greatly improved；And
In view of frequency converter specially designs oil resistant outer jacket structure using the leakage of lubricant grease that may be present during drive system,
The structure makes cable that can considerably increase the reliability and safety using system under grease environment with long-term stable operation；
Situations such as the fire that may occur, cable has high fire-retardance belting layer structure, which can be there is a situation where fire
Under make cable continue stable operation certain time, thus give people escape chance.Oil resistant structure and flame retarding construction all use environmental protection
Material will not generate a large amount of pollutants in the case of being abnormal, and really realize safe and environment-friendly feature.
The purpose of the utility model patent is achieved in that a kind of frequency conversion fire-retardant for the super soft environment-protective of resistance to oil environment
Cable, it is fire-retardant that cable successively respectively includes the super flexible conductor of cable, insulating layer, 3+3 cable core structure, cable core from internal layer to outer layer
Belting layer, anti-electromagnetic interference shielding layer, 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 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 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 frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment that the utility model patent provides, especially institute
Using 3+3 cable core structure, may be implemented to eliminate influence of the higher hamonic wave generated in frequency conversion device system to cable neutrality core.
Using the 6th class conductor in GB/T 3956-2008, be compared to common frequency-changing cable has the super flexible conductor that cable uses
More soft characteristic can greatly improve number of bends, the service life of cable；And in view of frequency converter is passed using system
The leakage of lubricant grease that may be present specially designs oil resistant outer jacket structure during dynamic, which makes cable in grease environment
Under can considerably increase the reliability and safety using system with long-term stable operation；For feelings such as the fire that may occur
Condition, cable have high fire-retardance belting layer structure, which can make cable continue stable operation one in the event of a fire
It fixes time, to give people's escape chance.Oil resistant structure and flame retarding construction all use environment-friendly materials, in the case of being abnormal,
A large amount of pollutants will not be generated, really realize safe and environment-friendly feature.Its application can greatly improve the use of frequency-changing cable
Longevity, while the risk that frequency-changing cable breaks down and destroys in the environment of lubricant grease leaks is eliminated and reducing, have obvious
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 that oil resistant adds flexi-ring to protect outer jacket.
Specific embodiment
As shown in Figure 1, a kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, super flexible conductor (1) is used
6th class conductor structure in GB/T 3956-2008 generally uses small bore bundle strand to form, general for big section
Using first progress 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) and cable
Rounding, closely knit should be filled between the fire-retardant belting layer of core (4), generally use gasket for packing or yarn is constituted；According to cable using characteristic and
Condition difference can be filled out using common gasket for packing or yarn, flame resistant filler rope or yarn and block water gasket for packing or yarn when using blocking water
It can go to play the role of longitudinal waterproof gear tide in the use process of cable when filling rope or yarn.Once frequency-changing cable sheath is unexpected damaged
Water inlet, waterproofing rope filled layer water-swellable play a role, and delay and prevent the further immersion of moisture, reduce moisture damage frequency conversion
The length of cable, repairing work and reduction loss after facilitating frequency-changing cable accident.And 3+3 cable core structure is moved by 3 phase cross-sections
Line of force 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.Cable core
Double-layer overlapping is wrapped forms for high fire-retardance band of the fire-retardant belting layer (4) using oxygen index (OI) greater than 50, and overlap rate is not less than 30%.
Anti-electromagnetic interference shielding layer (5), which is formed using electrician with circular copper wire braiding, or metal tape is wrapped forms and is partly led using extruding
Electrical shielding material forms, wherein count is not less than 85% when using weaving manner；It, should be twisted if metal tape is aluminium foil
Outer layer of cable core places one and is not less than 0.5mm2Beam close conductor, the purpose is to prevent the mutual of the inside and outside boundary's electromagnetic signal of cable
Interference, influences the reliability of whole system.Oil resistant add flexi-ring protect outer jacket (6) using extrude environmental protection plus soft oil resistant plastics or
Rubber material forms, and the fuel tolerance capability of cable can be improved, and greatly improves 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) and oil resistant add flexi-ring to protect outer jacket (6)
Design and the utility model that bases on practicality it is a kind of for the super soft environment-protective of resistance to oil environment it is fire-retardant monitoring frequency-changing cable key, surpass
The application of flexible conductor (1) can greatly improve number of bends, the service life of cable；3+3 cable core structure (3) may be implemented to disappear
Influence except the higher hamonic wave generated in frequency conversion device system to cable neutrality core；The fire-retardant belting layer of cable core (4) structure can
To make cable continue stable operation certain time in the event of a fire, to give people's escape chance；Oil resistant adds flexi-ring
Outer jacket (6) are protected in view of the leakage of lubricant grease that may be present in frequency conversion system transmission process specially designs oil resistant outer jacket
Structure, the structure make cable that can considerably increase the reliability and peace using system under grease environment with long-term stable operation
Quan Xing.So a kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment of the utility model compares and common variable-frequency electric
Cable has the characteristics that long service life, oil resistant environmental protection flame retardant.
Claims (5)
1. a kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment, it is characterised in that: cable from internal layer to outer layer according to
It is secondary respectively include: the super flexible conductor (1) of cable, 3+3 cable core structure (3), the fire-retardant belting layer of cable core (4), resists insulating layer (2)
Electromagnetic interference shield layer (5) and oil resistant add flexi-ring to protect outer jacket (6)；
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. the frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, it is characterised in that: cable
Super flexible conductor (1) using the 6th class conductor in GB/T 3956-2008.
3. the frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, it is characterised in that: cable core
Fire-retardant belting layer (4) is formed by high fire-retardance band is wrapped.
4. the frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, it is characterised in that: anti-electricity
Magnetic disturbance shielded layer (5) is using shielding material braiding, wrapped or extrude mode and form.
5. the frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment according to claim 1, it is characterised in that: oil resistant
Add flexi-ring to protect outer jacket (6) to extrude using oil resistant environmentally-friendly plastic or rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821326335.2U CN208834769U (en) | 2018-08-09 | 2018-08-09 | A kind of 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 |
|---|---|---|---|
| CN201821326335.2U CN208834769U (en) | 2018-08-09 | 2018-08-09 | A kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208834769U true CN208834769U (en) | 2019-05-07 |
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ID=66309451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821326335.2U Active CN208834769U (en) | 2018-08-09 | 2018-08-09 | A kind of frequency-changing cable fire-retardant for the super soft environment-protective of resistance to oil environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208834769U (en) |
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2018
- 2018-08-09 CN CN201821326335.2U patent/CN208834769U/en active Active
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