CN220753133U - Double-shielding high-voltage direct-current flexible cable - Google Patents
Double-shielding high-voltage direct-current flexible cable Download PDFInfo
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- CN220753133U CN220753133U CN202322336149.4U CN202322336149U CN220753133U CN 220753133 U CN220753133 U CN 220753133U CN 202322336149 U CN202322336149 U CN 202322336149U CN 220753133 U CN220753133 U CN 220753133U
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- wound
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- belt
- elastomer
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- 239000004020 conductor Substances 0.000 claims abstract description 79
- 229920000728 polyester Polymers 0.000 claims abstract description 56
- 239000004677 Nylon Substances 0.000 claims abstract description 52
- 229920001778 nylon Polymers 0.000 claims abstract description 52
- 239000000806 elastomer Substances 0.000 claims abstract description 40
- 229920001971 elastomer Polymers 0.000 claims abstract description 40
- 239000004065 semiconductor Substances 0.000 claims abstract description 32
- 239000003365 glass fiber Substances 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model provides a double-shielding high-voltage direct-current flexible cable, which comprises: the inner conductor, the first semi-conductive nylon belt, the conductor shielding layer, the elastomer inner insulating layer, the second semi-conductive nylon belt, the outer conductor, the first polyester belt, the glass fiber belt, the elastomer outer insulating layer, the second polyester belt, the woven shielding layer and the outer sheath; the outer conductor is wound on the outer side of the second semiconductor nylon belt, so that the outer conductor can be used as a wire of a transmission loop, low level is transmitted, and the shielding effect is achieved, so that the usability of a product is improved. The sheath is wound on the outer side of the woven shielding layer, so that the oil-resistant and wear-resistant performance of the product is realized. The second polyester belt is overlapped and wound and coated on the outer side of the outer insulating layer of the elastomer, and the braided shielding layer is wound on the outer side of the second polyester belt, so that the product has the electromagnetic interference prevention function.
Description
Technical Field
The utility model belongs to the technical field of direct current cables, and particularly relates to a double-shielding high-voltage direct current flexible cable.
Background
The DC high-voltage cable is mainly suitable for connecting a series of high-voltage and weak-current DC high-voltage generators and terminal equipment in the industries of power plants, steel plants, aluminum plants, coal preparation plants, cement plants, mines, shipbuilding, automobiles, pharmacy and the like, electrostatic dust collection, electrostatic spray painting, electrostatic flocking and the like.
The high-voltage direct-current cable is generally formed by extruding a semiconductor layer for homogenizing an electric field from stranded multi-strand copper conductors; extruding a high-voltage polyethylene insulating layer with a certain thickness; then braiding a copper wire shield; finally, a layer of polyvinyl chloride sheath is extruded, but for some places with severe working environments and electromagnetic interference, the traditional high-voltage direct current can not meet the requirements of the environments, so that the high-voltage direct current is required to have the characteristics of strong electromagnetic interference resistance, wear resistance, oil resistance and the like.
Disclosure of Invention
The utility model provides a double-shielding high-voltage direct-current flexible cable, which is characterized in that an outer conductor is wound on the outer side of a second semiconductor nylon belt, so that the outer conductor can be used as a lead of a transmission loop to transmit low level and has a shielding effect, and the usability of a product is improved. The sheath is wound on the outer side of the woven shielding layer, so that the oil-resistant and wear-resistant performance of the product is realized. The second polyester belt is overlapped and wound and coated on the outer side of the outer insulating layer of the elastomer, and the braided shielding layer is wound on the outer side of the second polyester belt, so that the product has the electromagnetic interference prevention function. The specific technical scheme is as follows:
a double-shielded high-voltage direct-current flexible cable, the double-shielded high-voltage direct-current flexible cable comprising: the inner conductor, the first semi-conductive nylon belt, the conductor shielding layer, the elastomer inner insulating layer, the second semi-conductive nylon belt, the outer conductor, the first polyester belt, the glass fiber belt, the elastomer outer insulating layer, the second polyester belt, the woven shielding layer and the outer sheath; the first semi-conductive nylon tape is wound around the outer side of the inner conductor in an overlapping manner; the conductor shielding layer is wound on the outer side of the first semiconductive nylon belt; the elastomer inner insulating layer is wound on the outer side of the conductor shielding layer; the second semiconductor nylon belt is overlapped and wound and coated on the outer side of the insulating layer in the elastomer; the outer conductor is wound on the outer side of the second semiconductor nylon belt; the first polyester tape is overlapped and wound and coated on the outer side of the outer conductor; the glass fiber belts are wound and coated on the outer side of the first polyester belt in an overlapping manner; the outer insulating layer of the elastomer is wound on the outer side of the glass fiber band; the second polyester tape is overlapped and wound and coated on the outer side of the outer insulating layer of the elastomer; the braided shielding layer is wound on the outer side of the second polyester belt; the outer sheath is an elastomer and is wound on the outer side of the woven shielding layer.
In addition, the double-shielding high-voltage direct-current flexible cable in the technical scheme provided by the utility model can also have the following additional technical characteristics:
in the technical scheme, the inner conductor is formed by twisting 332 steel wires with the diameter of 0.3 mm.
In the technical scheme, the thickness of the first semi-conductive nylon belt is 0.12mm, and the width is 25mm; the second semiconductor nylon tape had a thickness of 0.24mm and a width of 30mm.
In the technical scheme, the thickness of the conductor shielding layer is 0.9-1.1mm.
In the technical scheme, the thickness of the first polyester belt is 0.03mm, and the width of the first polyester belt is 40mm; the second polyester tape had a thickness of 0.03mm and a width of 40mm.
In the technical scheme, the thickness of the insulating layer in the elastomer is set to be 2.4-2.8mm, and the thickness of the insulating layer outside the elastomer is set to be 1.8-2.2mm.
In the technical scheme, the thickness of the outer sheath is 1.4-1.8mm.
Compared with the prior art, the double-shielding high-voltage direct-current flexible cable has the beneficial effects that:
1. the outer conductor is wound on the outer side of the second semiconductor nylon belt, so that the outer conductor can be used as a wire of a transmission loop, low level is transmitted, and the shielding effect is achieved, so that the usability of a product is improved. The sheath is wound on the outer side of the woven shielding layer, so that the oil-resistant and wear-resistant performance of the product is realized. The second polyester belt is overlapped and wound and coated on the outer side of the outer insulating layer of the elastomer, and the braided shielding layer is wound on the outer side of the second polyester belt, so that the product has the electromagnetic interference prevention function.
2. 332 steel wires with the diameter of 0.3mm are bundled and then twisted to form an inner conductor, so that good conductivity of the product is realized, and circuit loss caused by resistance is reduced.
3. The thickness of the first semiconductor nylon belt is set to be 0.12mm, and the width of the first semiconductor nylon belt is set to be 25mm, so that the first semiconductor nylon belt tightly hoops the inner conductor and protects the inner conductor, and the conductor shielding layer is prevented from being embedded into the inner conductor. The second semiconductor nylon tape is set to be 0.24mm in thickness and 30mm in width, so that the second semiconductor nylon tape protects the outer conductor and the outer conductor is prevented from being embedded into the elastomer inner insulating layer.
4. The thickness of the conductor shielding layer is set to be 0.9-1.1mm, so that the waste of materials is avoided on the premise of eliminating the air gap on the surface of the inner conductor, and the production cost of products is reduced.
5. By setting the thickness of the first polyester tape to 0.03mm and the width of the first polyester tape to 40mm, it is achieved that the first polyester tape can tightly cover the outer conductor and tighten the outer conductor. By setting the thickness of the second polyester tape to 0.03mm and the width of the second polyester tape to 40mm, it is achieved that the second polyester tape can tightly cover and protect the outer insulating layer of the elastomer.
6. The thickness of the outer insulating layer of the elastomer is set to be 1.8-2.2mm, so that the product has insulativity, and the waste of materials is avoided on the premise of softness, so that the production cost of the product is reduced. The thickness of the insulating layer in the elastomer is set to be 2.4-2.8mm so as to realize that the product has insulativity and avoid the waste of materials on the premise of having flexibility, thereby reducing the production cost of the product.
7. The thickness of the outer sheath is set to be 1.4-1.8mm, so that the waste of materials is avoided on the premise of meeting the requirements of oil resistance and wear resistance, and the production cost of products is reduced.
Drawings
FIG. 1 is a cross-sectional view of a double-shielded high voltage DC flexible cable of the present utility model;
the correspondence between the reference numerals and the component names in fig. 1 is:
10 inner conductors, 11 first semiconductive nylon belts, 12 conductor shielding layers, 13 elastomer inner insulation layers, 14 second semiconductive nylon belts, 15 outer conductors, 16 first polyester belts, 17 glass fiber belts, 18 elastomer outer insulation layers, 19 second polyester belts, 20 woven shielding layers, and 21 outer jackets.
Detailed Description
The utility model will be further described with reference to specific embodiments and fig. 1, but the utility model is not limited to these embodiments.
As shown in fig. 1, the double-shielded high-voltage direct-current flexible cable includes: an inner conductor 10, a first semiconductive nylon tape 11, a conductor shielding layer 12, an elastomeric inner insulation layer 13, a second semiconductive nylon tape 14, an outer conductor 15, a first polyester tape 16, a glass fiber tape 17, an elastomeric outer insulation layer 18, a second polyester tape 19, a braided shielding layer 20, and an outer jacket 21; the first semiconducting nylon tape 11 is wrapped around the outside of the inner conductor 10 in an overlapping manner; the conductor shielding layer 12 is wound on the outer side of the first semiconductive nylon belt 11; an elastomer inner insulation layer 13 is wound on the outer side of the conductor shield layer 12; the second semiconductor nylon belt 14 is overlapped and wound and coated on the outer side of the insulating layer 13 in the elastomer; the outer conductor 15 is wound on the outer side of the second semiconductor nylon tape 14; the first polyester tape 16 is overlapped and wound and coated on the outer side of the outer conductor 15; the glass fiber tape 17 is overlapped and wound and coated on the outer side of the first polyester tape 16; an outer insulation layer 18 of elastomer is wound on the outer side of the glass fiber band 17; the second polyester tape 19 is wound and coated on the outer side of the outer insulating layer 18 of the elastomer in an overlapping manner; a braided shield layer 20 is wound around the outside of the second polyester tape 19; the outer sheath 21 is an elastic body, and the outer sheath 21 is wound around the outside of the braided shield layer 20.
The first semi-conductive nylon tape 11 is overlapped and wound and coated on the outer side of the inner conductor 10, so that the inner conductor 10 is tightly clamped together, the stability of the inner conductor 10 is improved, and the inner conductor 10 is protected; the conductor shielding layer 12 is wound on the outer side of the first semi-conductive nylon belt 11, so that the air gap on the surface of the inner conductor 10 is eliminated, and the partial discharge resistance and branch discharge resistance are improved. The insulating layer 13 is wound on the outer side of the conductor shielding layer 12 through the elastic body, so that the insulating effect of the product is improved, and the product has good flexibility. The second semiconductor nylon tape 14 is overlapped and wound and wrapped on the outer side of the elastomer inner insulation layer 13, the outer conductor 15 is wound and arranged on the outer side of the second semiconductor nylon tape 14, and the first polyester tape 16 is overlapped and wrapped on the outer side of the outer conductor 15, so that the first polyester tape 16 and the second semiconductor nylon tape 14 protect the outer conductor 15, and the outer conductor 15 is prevented from being embedded in the elastomer inner insulation layer 13. The glass fiber tape 17 is overlapped and wound and coated on the outer side of the first polyester tape 16, so that the double insulation effect of the glass fiber tape 17 and the first polyester tape 16 is achieved, and the insulation property of a product is improved. By winding the outer insulation layer 18 of the elastomer around the outside of the glass fiber tape 17, the insulation of the product is further improved. The second polyester belt 19 is overlapped and wound and coated on the outer side of the outer insulating layer 18 of the elastomer, and the braided shielding layer 20 is wound on the outer side of the second polyester belt 19, so that the product has the electromagnetic interference prevention function; by wrapping the outer jacket 21 around the outside of the braided shield 20, the product is oil resistant and wear resistant.
By adopting the structure, the outer conductor 15 is wound on the outer side of the second semiconductor nylon belt 14, so that the outer conductor 15 can be used as a wire of a transmission loop to transmit low level and has a shielding effect, and the usability of a product is improved. By wrapping the jacket around the outside of the braided shield 20, the product is oil resistant and wear resistant. The second polyester belt 19 is wound and coated on the outer side of the outer insulating layer 18 of the elastomer body in an overlapping mode, and the woven shielding layer 20 is wound on the outer side of the second polyester belt 19, so that the product has the electromagnetic interference preventing function.
Specifically, the outer conductor 15 is woven by adopting 32 ingot copper wires and is formed by weaving an inner layer and an outer layer, the diameter of a monofilament is 0.3mm, the weaving pitch of the inner layer is 90mm, the weaving pitch of the outer layer is 70mm, the weaving density is controlled between 75% and 80%, and the cross section area of the outer conductor 15 is the same as the cross section area of the conductor.
Specifically, the braided shielding layer 20 is braided by using 32 ingots of tinned copper wires, the diameter of a monofilament is 0.25mm, the braiding pitch is 90mm, and the braiding density is controlled to be 85-90%.
In the embodiment of the present utility model, the inner conductor 10 is twisted from 332 0.3mm steel wires.
332 steel wires with the diameter of 0.3mm are bundled and then twisted to form the inner conductor 10, so that good conductivity of the product is realized, and circuit loss caused by resistance is reduced.
In the embodiment of the utility model, the thickness of the first semi-conductive nylon tape 11 is 0.12mm and the width is 25mm; the second semiconducting nylon tape 14 has a thickness of 0.24mm and a width of 30mm.
The first semiconductor nylon strap is set to have a thickness of 0.12mm and a first semiconductor nylon strap width of 25mm, so that the first semiconductor nylon strap tightly hoops the inner conductor 10 and protects the inner conductor 10, thereby preventing the conductor shielding layer 12 from being embedded into the inner conductor 10. By setting the thickness of the second semiconductor nylon tape 14 to 0.24mm and the width of the second semiconductor nylon tape 14 to 30mm, it is achieved that the second semiconductor nylon tape 14 protects the outer conductor 15, thereby preventing the outer conductor 15 from being embedded in the elastomer inner insulation layer 13.
Specifically, the overlapping coverage rate of the first semiconductor nylon belt is more than 15%, and the winding and coating of the first semiconductor nylon belt are smooth and neat. The overlapping coverage rate of the second semiconductor nylon belt 14 is above 15%, and the second semiconductor nylon belt 14 is wound, coated flatly and neatly.
In an embodiment of the utility model, the thickness of the conductor shield layer 12 is 0.9-1.1mm.
By setting the thickness of the conductor shielding layer 12 to 0.9-1.1mm, the waste of materials is avoided on the premise of eliminating the air gap on the surface of the inner conductor 10, so that the production cost of products is reduced.
In an embodiment of the present utility model, the first polyester strap 16 has a thickness of 0.03mm and a width of 40mm; the second polyester tape 19 had a thickness of 0.03mm and a width of 40mm.
By setting the thickness of the first polyester tape 16 to 0.03mm and the width of the first polyester tape 16 to 40mm, it is achieved that the first polyester tape 16 can tightly wrap the outer conductor 15 and tighten the outer conductor 15. By setting the thickness of the second polyester tape 19 to 0.03mm and the width of the second polyester tape 19 to 40mm, it is achieved that the second polyester tape 19 can tightly cover the outer elastomeric insulating layer 18 and protect the outer elastomeric insulating layer 18.
Specifically, the overlapping percentage of the first polyester tape 16 is 15% or more, and the overlapping percentage of the second polyester tape 19 is 15% or more.
In the embodiment of the present utility model, the thickness of the intra-elastomer insulation layer 13 is set to 2.4 to 2.8mm, and the thickness of the extra-elastomer insulation layer 18 is set to 1.8 to 2.2mm.
The thickness of the outer insulating layer 18 of the elastomer is set to be 1.8-2.2mm, so that the product has insulativity, and the waste of materials is avoided on the premise of softness, so that the production cost of the product is reduced. The thickness of the insulating layer 13 in the elastomer is set to be 2.4-2.8mm so as to realize that the product has insulativity and softness, and the waste of materials is avoided so as to reduce the production cost of the product.
In the embodiment of the present utility model, the thickness of the outer sheath 21 is 1.4-1.8mm.
By setting the thickness of the outer sheath 21 to be 1.4-1.8mm, the waste of materials is avoided on the premise of meeting the requirements of oil resistance and wear resistance, and the production cost of products is reduced.
In the description of the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. A double-shielded high-voltage direct-current flexible cable, characterized in that the double-shielded high-voltage direct-current flexible cable comprises:
an inner conductor;
the first semi-conductive nylon belt is wound around the outer side of the inner conductor in an overlapping mode;
the conductor shielding layer is wound on the outer side of the first semi-conductive nylon belt;
an elastomer inner insulation layer wound on the outer side of the conductor shielding layer;
the second semiconductor nylon belt is wound around the outer side of the insulating layer in the elastomer in an overlapping manner;
the outer conductor is wound on the outer side of the second semiconductor nylon belt;
the first polyester tape is wound and coated on the outer side of the outer conductor in an overlapping manner;
the glass fiber belts are wound and coated on the outer side of the first polyester belt in an overlapping mode;
the outer elastic insulation layer is wound on the outer side of the glass fiber band;
the second polyester belt is wound and coated on the outer side of the outer insulating layer of the elastomer in an overlapping manner;
the braided shielding layer is wound on the outer side of the second polyester belt;
the outer sheath is an elastomer and is wound on the outer side of the woven shielding layer.
2. A double-shielded high-voltage direct-current flexible cable according to claim 1, wherein:
the inner conductor is formed by twisting 332 steel wires with the diameter of 0.3 mm.
3. A double-shielded high-voltage direct-current flexible cable according to claim 1, wherein:
the thickness of the first semi-conductive nylon belt is 0.12mm, and the width of the first semi-conductive nylon belt is 25mm;
the thickness of the second semiconductor nylon belt is 0.24mm, and the width of the second semiconductor nylon belt is 30mm.
4. A double-shielded high-voltage direct-current flexible cable according to claim 1, wherein:
the thickness of the conductor shielding layer is 0.9-1.1mm.
5. A double-shielded high-voltage direct-current flexible cable according to claim 1, wherein:
the thickness of the first polyester belt is 0.03mm, and the width of the first polyester belt is 40mm;
the thickness of the second polyester band is 0.03mm, and the width is 40mm.
6. A double-shielded high-voltage direct-current flexible cable according to claim 1, wherein:
the thickness of the insulating layer in the elastomer is 2.4-2.8mm;
the thickness of the outer insulating layer of the elastomer is 1.8-2.2mm.
7. A double-shielded high-voltage direct-current flexible cable according to claim 1, wherein:
the thickness of the outer sheath is 1.4-1.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322336149.4U CN220753133U (en) | 2023-08-30 | 2023-08-30 | Double-shielding high-voltage direct-current flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322336149.4U CN220753133U (en) | 2023-08-30 | 2023-08-30 | Double-shielding high-voltage direct-current flexible cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220753133U true CN220753133U (en) | 2024-04-09 |
Family
ID=90551943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322336149.4U Active CN220753133U (en) | 2023-08-30 | 2023-08-30 | Double-shielding high-voltage direct-current flexible cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753133U (en) |
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2023
- 2023-08-30 CN CN202322336149.4U patent/CN220753133U/en active Active
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