CN213545946U - Cable for voltage-resistant frequency conversion system with function of reducing working capacitance - Google Patents
Cable for voltage-resistant frequency conversion system with function of reducing working capacitance Download PDFInfo
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- CN213545946U CN213545946U CN202023066148.5U CN202023066148U CN213545946U CN 213545946 U CN213545946 U CN 213545946U CN 202023066148 U CN202023066148 U CN 202023066148U CN 213545946 U CN213545946 U CN 213545946U
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Abstract
The utility model relates to the technical field of cables, in particular to a pressure-resistant frequency conversion system cable with a function of reducing working capacitance, which comprises a plurality of conductors, wherein the conductors are composed of an insulating layer and a plurality of strands of fine-twisted bending-resistant anaerobic copper wires wrapped inside the insulating layer, the insulating layer is crosslinked polyethylene, a filling layer is arranged between the conductors, the pressure-resistant frequency conversion system cable with the function of reducing the working capacitance is insulated by the crosslinked polyethylene arranged, which is helpful for reducing the working capacitance, not only improves the insulation resistance, but also greatly improves the voltage-resistant characteristic, when the cable is pressed and extruded outside, the pressure-resistant layer can provide enough elasticity so as to protect the inner conductor, the middle part of the trapezoidal structure of the pressure-resistant layer is provided with pressure-resistant deformation holes, the pressure-resistant deformation holes can further improve the deformability of the pressure-resistant layer, thereby greatly protecting the inner conductor, the service life of the cable is prolonged.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a withstand voltage formula cable for frequency conversion system with reduce work electric capacity function.
Background
The wire and cable industry is the second industry second to the automobile industry in China, the product variety satisfaction rate and the domestic market share both exceed 90%, the total value of the wires and cables in China exceeds the United states in the world, the wire and cable industry becomes the first wire and cable producing country in the world, the number of newly added enterprises is continuously increased along with the high-speed development of the wire and cable industry in China, the overall technical level of the industry is greatly improved, and the variable frequency cable is mainly used for cables for connecting a variable frequency power supply and a variable frequency motor and transmission and distribution lines with rated voltage of 1KV and below and used for transmitting electric energy, and is particularly suitable for industries such as papermaking, metallurgy, metal processing, mines, railways, food processing and the like.
The voltage resistance of most of frequency conversion cables is not enough when the existing frequency conversion cables are used, so that the cable is externally pressed when the frequency conversion cables are used, the inner conductor is damaged, and the service life of the cable is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming such as exist that resistance to pressure is not enough among the prior art, and the withstand voltage formula cable for frequency conversion system that has reduction work electric capacity function that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a design a withstand voltage formula cable for frequency conversion system with reduce working capacitance function, includes several conductors, the conductor comprises insulating layer and the resistant anaerobic copper wire of bending of the fine hank of stranded of parcel in the insulating layer inside, the insulating layer is crosslinked polyethylene, be provided with the filling layer between the conductor, several the outside of conductor parcel has band layer, shielding layer, waterproof layer, resistance to pressure layer, armor and oversheath layer in proper order, the rubber of resistance to pressure layer for being the trapezium structure extension, resistance to pressure deformation hole has all been seted up at the middle part of resistance to pressure layer trapezium structure, the resistance to pressure layer bonds in the outside of waterproof layer.
Preferably, the filling layer is a steel wire-wrapped fiber rope.
Preferably, the shielding layer is formed by weaving tinned copper wires, and the coverage rate of the shielding layer is not less than 90%.
Preferably, the outer sheath layer is a transparent special PVC sheath.
The utility model provides a pair of withstand voltage formula cable for frequency conversion system with reduce work electric capacity function, beneficial effect lies in: the utility model discloses a crosslinked polyethylene who sets up is insulating, help reducing working capacitance, insulation resistance has not only been improved, and the withstand voltage characteristic has been improved greatly, and have the characteristics of good flame retardant property, the resistance to pressure layer of setting is for being the rubber that the trapezium structure extends, when the outside pressurized extrusion of cable, thereby the resistance to pressure layer can provide sufficient elasticity to the protection of internal conductor, and resistance to pressure deformation hole has all been seted up at the middle part of resistance to pressure layer trapezium structure, resistance to pressure deformation hole can further promote resistance to pressure layer deformability, thereby very big protects internal conductor, the life of cable has been prolonged, this cable reasonable in design, and the practicality is stronger.
Drawings
Fig. 1 is the utility model provides a structure schematic diagram of withstand voltage formula cable for frequency conversion system with reduce work electric capacity function.
In the figure: 1. a conductor; 2. an insulating layer; 3. a filling layer; 4. a belting layer; 5. a shielding layer; 6. a waterproof layer; 7. a pressure-resistant layer; 8. an armor layer; 9. an outer jacket layer; 10. a deformation hole is formed.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, a withstand voltage formula cable for frequency conversion system with reduce working capacitance function, including several conductors 1, conductor 1 comprises insulating layer 2 and the resistant anaerobic copper wire that bends of the fine hank of stranded of parcel in insulating layer 2 inside, insulating layer 2 is crosslinked polyethylene, be provided with filling layer 3 between the conductor 1, several conductors 1's the outside parcel has band layer 4 in proper order, shielding layer 5, waterproof layer 6, withstand voltage layer 7, armor 8 and oversheath layer 9, withstand voltage layer 7 is the rubber that is the trapezium structure and extends, withstand voltage deformation hole 10 has all been seted up at withstand voltage layer 7 trapezium structure's middle part, withstand voltage layer 7 bonds in waterproof layer 6's the outside.
The filling layer 3 is the fiber rope of steel wire parcel, and the filling layer 3 that the fiber rope of steel wire parcel is constituteed has stretch-proofing performance height and elasticity to can be further protect internal conductor 1, shielding layer 5 is woven for the tinned copper wire and forms, and shielding layer 5's coverage is not less than 90%, and oversheath layer 9 is transparent special PVC sheath.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a withstand voltage formula cable for frequency conversion system with reduce working capacitance function, includes several conductors (1), its characterized in that: conductor (1) is by insulating layer (2) and wrap up at the inside fine hank of stranded resistant anaerobic copper wire of bending of insulating layer (2) and constitutes, insulating layer (2) are crosslinked polyethylene, be provided with filling layer (3) between conductor (1), several the outside of conductor (1) wraps up band layer (4), shielding layer (5), waterproof layer (6), resistance to pressure layer (7), armor (8) and oversheath layer (9) in proper order, rubber that resistance to pressure layer (7) extend for being the trapezium structure, resistance to pressure deformation hole (10) have all been seted up at the middle part of resistance to pressure layer (7) trapezium structure, resistance to pressure layer (7) bond in the outside of waterproof layer (6).
2. The cable for voltage-withstanding frequency conversion system with the function of reducing the working capacitance as claimed in claim 1, wherein: the filling layer (3) is a fiber rope wrapped by steel wires.
3. The cable for voltage-withstanding frequency conversion system with the function of reducing the working capacitance as claimed in claim 1, wherein: the shielding layer (5) is formed by weaving tinned copper wires, and the coverage rate of the shielding layer (5) is not less than 90%.
4. The cable for voltage-withstanding frequency conversion system with the function of reducing the working capacitance as claimed in claim 1, wherein: the outer sheath layer (9) is a transparent special PVC sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023066148.5U CN213545946U (en) | 2020-12-18 | 2020-12-18 | Cable for voltage-resistant frequency conversion system with function of reducing working capacitance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023066148.5U CN213545946U (en) | 2020-12-18 | 2020-12-18 | Cable for voltage-resistant frequency conversion system with function of reducing working capacitance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213545946U true CN213545946U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202023066148.5U Active CN213545946U (en) | 2020-12-18 | 2020-12-18 | Cable for voltage-resistant frequency conversion system with function of reducing working capacitance |
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| CN (1) | CN213545946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115631887A (en) * | 2022-10-25 | 2023-01-20 | 深圳中缆电缆集团有限公司 | Frequency conversion carbon core cable |
-
2020
- 2020-12-18 CN CN202023066148.5U patent/CN213545946U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115631887A (en) * | 2022-10-25 | 2023-01-20 | 深圳中缆电缆集团有限公司 | Frequency conversion carbon core cable |
| CN115631887B (en) * | 2022-10-25 | 2023-05-30 | 深圳中缆电缆集团有限公司 | Variable-frequency carbon core cable |
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