CN202339750U - Novel variable frequency cable - Google Patents
Novel variable frequency cable Download PDFInfo
- Publication number
- CN202339750U CN202339750U CN2011205148331U CN201120514833U CN202339750U CN 202339750 U CN202339750 U CN 202339750U CN 2011205148331 U CN2011205148331 U CN 2011205148331U CN 201120514833 U CN201120514833 U CN 201120514833U CN 202339750 U CN202339750 U CN 202339750U
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Abstract
The utility model discloses a novel variable frequency cable comprising a cable core, a shielding layer and a jacket layer, wherein the cable core comprises a wire core, a filling layer and a wrapping layer, the wire core comprises three main wire cores and three neutral wire cores, a first semi-conductive shielding layer, an insulating layer and a second semi-conductive shielding layer are wrapped at the outside of the main wire cores, the insulating layer is arranged between the first semi-conductive shielding layer and the second semi-conductive shielding layer, and the second semi-conductive shielding layer is arranged on the outermost layer; and a third semi-conductive shielding layer is wrapped at the outside of the neutral wire cores, the neutral wire cores and the main wire cores are arranged at intervals, and the shielding layer and the jacket layer are sequentially wrapped at the outside of the cable core. The utility model overcomes the technical defects of weak impact voltage resistance and bad shielding property of the novel variable frequency cable in the prior art and provides a novel variable frequency cable with strong impact voltage resistance and good shielding property.
Description
Technical field
The utility model belongs to field of cables, is specifically related to a kind of novel frequency-changing cable.
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 rated voltage 3.6/6KV and the above electric line, make 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, but variable-frequency motor and control system use this through the frequent frequency conversion of regular meeting's high speed; Pulse current increases; Easily frequency converter, cable are 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 shock-resistant voltage property and shield effectiveness.The master core and the neutral core of the existing novel frequency-changing cable of 3+3 coat a layer insulating; Then; Cable core is followed successively by lapping layer, screen, restrictive coating outward, and the anti-surge property of the novel frequency-changing cable of this kind and shield effectiveness all do not reach in the practice process these two kinds of performance demands.
The utility model content
The technical problem that the utility model will solve is that the shock-resistant voltage performance power of above-mentioned novel frequency-changing cable is more weak relatively poor with shielding properties, and the novel frequency-changing cable of the strong and advantages of good shielding performance of a kind of shock-resistant voltage capability is provided.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of novel frequency-changing cable; Comprise cable core, screen and restrictive coating; Wherein cable core comprises core, packed layer and lapping layer, and said core comprises three master cores, three neutral cores, and master core is coated with first semiconductive shielding layer, insulating barrier and second semiconductive shielding layer; Insulating barrier is located between first semiconductive shielding layer and second semiconductive shielding layer, and second semiconductive shielding layer is located at outermost layer; The 3rd semiconductive shielding layer is covered in neutral core outsourcing, and neutral core and master core are spaced, 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 novel frequency-changing cable of implementing 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 neutral core; Has stronger antijamming capability, shock-resistant voltage capability, advantages such as low radiation.
Description of drawings
Fig. 1 is the cross section structure sketch map of the novel frequency-changing cable of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further specified:
Novel frequency-changing cable as shown in Figure 1; Comprise cable core, screen 9 and restrictive coating 10; Wherein cable core comprises core, packed layer 7 and lapping layer 8, and said core comprises three master cores 1, three neutral cores 5, and master core is coated with first semiconductive shielding layer 2, insulating barrier 3 and second semiconductive shielding layer 4; Insulating barrier 3 is located between first semiconductive shielding layer 2 and second semiconductive shielding layer 4, and second semiconductive shielding layer 4 is located at outermost layer; Neutral core 5 outer the 3rd semiconductive shielding layers 6 that coat; Neutral core 5 is spaced with master core 1; Cable core is followed successively by screen 9, restrictive coating 10 outward; Screen 9 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, and the selection of screen 9 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. novel frequency-changing cable; Comprise cable core, screen and restrictive coating; Wherein cable core comprises core, packed layer and lapping layer, it is characterized in that: said core comprises three master cores, three neutral cores, and master core is coated with first semiconductive shielding layer, insulating barrier and second semiconductive shielding layer; Insulating barrier is located between first semiconductive shielding layer and second semiconductive shielding layer, and second semiconductive shielding layer is located at outermost layer; The 3rd semiconductive shielding layer is covered in neutral core outsourcing, and neutral core and master core are spaced, and cable core is followed successively by screen, restrictive coating outward.
2. according to the said novel frequency-changing cable of claim 1, it 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 |
|---|---|---|---|
| CN2011205148331U CN202339750U (en) | 2011-12-12 | 2011-12-12 | Novel variable frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205148331U CN202339750U (en) | 2011-12-12 | 2011-12-12 | Novel variable frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202339750U true CN202339750U (en) | 2012-07-18 |
Family
ID=46488440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205148331U Expired - Fee Related CN202339750U (en) | 2011-12-12 | 2011-12-12 | Novel variable frequency cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202339750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156008A (en) * | 2021-12-06 | 2022-03-08 | 无锡市明珠电缆有限公司 | Medium-voltage variable-frequency power cable matched with high-performance high-capacity frequency converter and preparation method thereof |
-
2011
- 2011-12-12 CN CN2011205148331U patent/CN202339750U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156008A (en) * | 2021-12-06 | 2022-03-08 | 无锡市明珠电缆有限公司 | Medium-voltage variable-frequency power cable matched with high-performance high-capacity frequency converter and preparation method thereof |
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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: 20120718 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |