CN202352411U - Higher harmonic resistant variable frequency cable - Google Patents
Higher harmonic resistant variable frequency cable Download PDFInfo
- Publication number
- CN202352411U CN202352411U CN2011205148280U CN201120514828U CN202352411U CN 202352411 U CN202352411 U CN 202352411U CN 2011205148280 U CN2011205148280 U CN 2011205148280U CN 201120514828 U CN201120514828 U CN 201120514828U CN 202352411 U CN202352411 U CN 202352411U
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- shielding layer
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- screen
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Abstract
The utility model discloses a higher harmonic resistant variable frequency cable which comprises a cable core, a shielding layer and a sheath layer, wherein the cable core comprises a wire core and an inner wrapping layer; the wire core consists of three main wire cores, as well as a first semi-conductive shielding layer, an insulating layer, a second semi-conductive shielding layer and a copper strip wrapping shielding layer which are coated with the main wire cores; the first semi-conductive shielding layer is arranged between the main wire cores and the insulating layer; the second semi-conductive shielding layer is arranged between the insulating layer and the copper strip wrapping shielding layer; the copper strip wrapping shielding layer is arranged on the outermost layer of the wire core; every two wire cores are tangent to each other; and the shielding layer and the sheath layer are arranged outside the wire core in turn. The technical defects of low electric shock resistance, low voltage resistance and bad shielding effect of the higher harmonic resistant variable frequency cable in the prior art are overcome, and a higher harmonic resistant variable frequency cable with high electric shock resistance, high voltage resistance and high interference resistance is provided.
Description
Technical field
The utility model belongs to field of cables, is specifically related to a kind of frequency-changing cable of resisting high order harmonic component.
Background technology
Frequency-changing cable is mainly used in the cable that connects usefulness between variable frequency power supply and the variable-frequency motor, and in the electric line more than the rated voltage 3.6/6kV, makes transmission of electric energy and use.Be particularly useful for industries such as papermaking, metallurgy, metal processing, mine, railway and food processing.The electric equipment products of modern industry, great majority all design and adopt the variable-frequency motor control system, realize the purpose of energy-conservation economize on electricity; Use the frequency-changing cable of general opposing high order harmonic component; Variable-frequency motor and control system be the often frequent frequency conversion of high speed in use, and pulse current increases, and easily converter cable is caused damage; The life-span of motor and control system also can be affected, the system around also can badly influencing simultaneously.So this electricity frequency cable that just requires to connect electricity frequency electric machine control system has good anti-surge property and shield effectiveness.The core structure of the frequency-changing cable of existing opposing high order harmonic component is made up of master core and insulating barrier, and meeting punctures the center core because of the stack of the current component of high order harmonic component generation in the practice process, and antijamming capability is also undesirable.
The utility model content
The technical problem that the utility model will solve is the more weak and relatively poor technological deficiency of shield effectiveness to the anti-surge voltage capability of frequency-changing cable of above-mentioned opposing high order harmonic component, and the frequency-changing cable of all stronger opposing high order harmonic component of a kind of shock-resistant voltage capability and antijamming capability is provided.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of frequency-changing cable of resisting high order harmonic component; Comprise cable core, screen and restrictive coating; Wherein cable core comprises core and interior lapping layer, and said core is made up of first semiconductive shielding layer, insulating barrier, second semiconductive shielding layer, the copper strips lapped shielding layer of three master cores and parcel master core, and first semiconductive shielding layer is arranged between master core and the insulating barrier; Second semiconductive shielding layer is located between insulating barrier and the copper strips lapped shielding layer; The copper strips lapped shielding layer is at the outermost layer of core, the tangent in twos setting of core, and cable core is followed successively by screen, restrictive coating outward.
Further, said screen is the combination in any that copper wire woven shield, copper wire twine screen, copper strips lapped shielding layer, aluminium-plastic tape lapped shielding layer.
The frequency-changing cable of implementing the opposing high order harmonic component of the utility model has following beneficial effect: can stand the high order harmonic component that frequency conversion system produces; The stack of the current component that can not produce because of high order harmonic component punctures the center core; Has stronger antijamming capability; Shock-resistant voltage capability, advantages such as low radiation.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further specified:
The frequency-changing cable of opposing high order harmonic component as shown in Figure 1; Comprise cable core, screen 8 and restrictive coating 9; Wherein cable core comprises core and interior lapping layer 7; Interior lapping layer 7 is coated on outside the core, is provided with packed layer 6 between core and the interior lapping layer 5, and core is made up of first semiconductive shielding layer 2 of three master cores 1 and parcel master core 1, insulating barrier 3, second semiconductive shielding layer 4, copper strips lapped shielding layer 5; First semiconductive shielding layer 2 is arranged between master core 1 and the insulating barrier 3; Second semiconductive shielding layer 4 is located between insulating barrier 3 and the copper strips lapped shielding layer 5, and copper strips lapped shielding layer 5 is at the outermost layer of core, the tangent in twos setting of core; Cable core is followed successively by screen 8, restrictive coating 9 outward, and screen 8 is the combination in any that copper wire woven shield, copper wire twine screen, copper strips lapped shielding layer, aluminium-plastic tape lapped shielding layer.The selection of screen 8 has: the copper wire woven shield; Copper wire twines screen; The copper strips lapped shielding layer; The aluminium-plastic tape lapped shielding layer; The combination of copper wire woven shield and copper strips lapped shielding layer; Copper wire twines the combination of screen and copper strips lapped shielding layer; The combination of copper strips lapped shielding layer and aluminium-plastic tape lapped shielding layer; Copper wire twines the combination of screen and aluminium-plastic tape lapped shielding layer; The combination of copper wire woven shield and aluminium-plastic tape lapped shielding layer; The combination that copper wire woven shield, copper wire twine screen, copper strips lapped shielding layer, four kinds of screens of aluminium-plastic tape lapped shielding layer.
Above-described only is the preferred implementation of the utility model; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from the utility model structure, can also make some distortion and improvement; These also should be regarded as the protection range of the utility model, and these can not influence effect and practical applicability that the utility model is implemented.
Claims (2)
1. frequency-changing cable of resisting high order harmonic component; Comprise cable core, screen and restrictive coating; Wherein cable core comprises core and interior lapping layer, it is characterized in that: said core is made up of first semiconductive shielding layer, insulating barrier, second semiconductive shielding layer, the copper strips lapped shielding layer of three master cores and parcel master core, and first semiconductive shielding layer is arranged between master core and the insulating barrier; Second semiconductive shielding layer is located between insulating barrier and the copper strips lapped shielding layer; The copper strips lapped shielding layer is at the outermost layer of core, the tangent in twos setting of core, and cable core is followed successively by screen, restrictive coating outward.
2. the frequency-changing cable of opposing high order harmonic component according to claim 1 is characterized in that: said screen is the combination in any that copper wire woven shield, copper wire twine screen, copper strips lapped shielding layer, aluminium-plastic tape lapped shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205148280U CN202352411U (en) | 2011-12-12 | 2011-12-12 | Higher harmonic resistant variable frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205148280U CN202352411U (en) | 2011-12-12 | 2011-12-12 | Higher harmonic resistant variable frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202352411U true CN202352411U (en) | 2012-07-25 |
Family
ID=46541396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205148280U Expired - Fee Related CN202352411U (en) | 2011-12-12 | 2011-12-12 | Higher harmonic resistant variable frequency cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202352411U (en) |
-
2011
- 2011-12-12 CN CN2011205148280U patent/CN202352411U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |