CN217880894U - Improved medium-voltage power cable for frequency converter - Google Patents
Improved medium-voltage power cable for frequency converter Download PDFInfo
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- CN217880894U CN217880894U CN202221650605.1U CN202221650605U CN217880894U CN 217880894 U CN217880894 U CN 217880894U CN 202221650605 U CN202221650605 U CN 202221650605U CN 217880894 U CN217880894 U CN 217880894U
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- voltage power
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- 239000004020 conductor Substances 0.000 claims abstract description 51
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 229920000098 polyolefin Polymers 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 230000017105 transposition Effects 0.000 claims abstract description 3
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 27
- 230000000694 effects Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The utility model relates to a modified middling pressure power cable for converter, it includes a plurality of insulation core I and insulation core II, and the cable core is constituteed in their transposition the cable core outside is equipped with ceramic polyolefin inner sheath, armor, shockproof buffering strip, oversheath in proper order, insulation core I includes conductor I the intussuseption of I clearance of conductor is filled with the heat absorption and is filled I the outside of conductor is equipped with heat insulating tape I the outside conductor shielding layer that is equipped with of heat insulating tape I the outside insulating tape I of being equipped with of conductor shielding layer the outside insulating layer I outside is equipped with the insulation shielding layer the outside copper tape layer that is equipped with of insulation shielding layer, insulation core II includes conductor II the outside heat insulating tape II that is equipped with of conductor II the outside insulating tape II of heat insulating tape is equipped with insulating layer II. The utility model discloses oil resistance is good, and impact resistance is good, and conductor operating temperature obtains improving cable life.
Description
Technical Field
The utility model relates to a cable, concretely relates to middling pressure power cable for converter.
Background
With the development of modern industry, high-performance and high-power motors are continuously appeared, the speed regulation of medium-voltage motors becomes a problem which needs to be solved, medium-voltage frequency converters are generated in response to operation, the medium-voltage frequency converters are used as power transmission cables for the bridge action between the frequency converters and the motors, and the medium-voltage frequency conversion cables are still in the research and development stage at present.
Because the frequency conversion power cable has more use environments, more influence on the cable caused by environmental factors and higher oil stain on some occasions, the frequency conversion power cable has destructive effect on a long-term running protective layer of the cable and influences the service life of the cable; some places have higher fire protection requirements, and under the condition of fire, the cable is required to be incapable of being powered off and to have fire resistance.
Disclosure of Invention
The purpose of the invention is as follows: the utility model aims at overcoming the not enough among the prior art, providing an oil resistance can be good, and impact resistance can be good, and conductor operating temperature obtains improving, improves cable life's middling pressure power cable for modified converter.
The technical scheme is as follows: in order to solve the technical problem, a modified middling pressure power cable for converter, it includes a plurality of insulation core I and insulation core II, the cable core is constituteed with II transposition of insulation core I the cable core outside is equipped with ceramic polyolefin inner sheath pottery polyolefin inner sheath outside is equipped with the armor outside is equipped with shockproof buffering strip the buffering strip outside of taking precautions against earthquakes is equipped with the oversheath, insulation core I includes conductor I pack the heat absorption in I clearance of conductor and fills I outside of conductor is equipped with heat insulating tape I the I outside of heat insulating tape is equipped with the conductor shielding layer outside is equipped with insulation layer I the I outside of insulation layer is equipped with the insulation shielding layer outside is equipped with the copper tape layer, insulation core II includes conductor II the II outside of conductor is equipped with heat insulating tape II the II outside of heat insulating tape is equipped with insulation layer II.
Further, the thickness of the ceramic polyolefin inner sheath is 4.0mm.
Furthermore, the armor layer is formed by copper strip armor.
Further, the shockproof buffer strip is a polyethylene foam filling strip.
Furthermore, the outer sheath is an oil-resistant polyvinyl chloride sheath, and the thickness of the outer sheath is not less than 4.23mm.
Furthermore, the conductor I is formed by twisting multiple strands of fine copper wire bundles in a complex mode, the heat absorption filling is filled in the complex twisting gaps of the conductor I, and the heat absorption filling is made of glass fiber.
Furthermore, the conductor shielding layer, the insulating layer I and the insulating shielding layer are formed by three layers in a co-extrusion mode.
Further, the thickness of the insulating layer II is not less than 3.95mm.
Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: the utility model discloses overall structure sets up rationally, conductor I adopts compound hank type soft structure, fill the glass silk fibre in the clearance of conductor I, the cable is at the operation in-process, I temperature of conductor risees, the glass silk fibre heat absorption, I operation highest temperature of conductor can improve 10-20 ℃, glass fibre has higher heat resistance and intensity, and certain elasticity has, wholly increase the pliability of cable, I outer adoption heat insulating tape I that adopts of conductor overlaps around the package, II outer adoption heat insulating tape II of conductor, have thermal-insulated effect, reduce I and II heats of conductor to insulating transmission, reduce insulating temperature, reduce insulating thermal ageing, improve cable life, pottery polyolefin inner sheath is under 360 ℃ high temperature or flame, can be burnt into complete hard ceramic form casing rapidly, do not melt under high temperature, do not shrink, do not drip, good fire prevention effect has, armor outside winding polyethylene filler strip, play the buffering, shockproof effect, the oversheath adopts oil-resistant type polyvinyl chloride sheath, make the cable have good resistant oily performance.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Example 1
As shown in figure 1, the improved medium voltage power cable for the frequency converter comprises three insulation wire cores I and three insulation wire cores II, wherein the three insulation wire cores I and the three insulation wire cores II are arranged in a 120-degree phase symmetry mode to form a 3+3 structure, the insulation wire cores I and the insulation wire cores II are twisted to form a cable core, a ceramic polyolefin inner sheath 1 is arranged outside the cable core, the thickness of the ceramic polyolefin inner sheath 1 is 4.0mm, an armor layer 2 is arranged outside the ceramic polyolefin inner sheath 1, the armor layer 2 is formed by copper strip armor, a shockproof buffer strip 3 is arranged outside the armor layer 2, the shockproof buffer strip 3 is a polyethylene foaming filler strip, an outer sheath 4 is arranged outside the shockproof buffer strip 3, the outer sheath 4 is an oil-resistant polyvinyl chloride sheath, and the thickness of the shockproof buffer strip is not less than 4.23mm, the insulation core I comprises a conductor I5, the conductor I5 is formed by twisting multiple strands of fine copper wire strands, a heat absorption filling 6 is filled in a twisting gap of the conductor I5, the heat absorption filling 6 is made of glass fiber, a heat insulation belt I7 is arranged outside the conductor I5, a conductor shielding layer 8 is arranged outside the heat insulation belt I7, an insulation layer I9 is arranged outside the conductor shielding layer 8, an insulation shielding layer 10 is arranged outside the insulation layer I9, the conductor shielding layer 8, the insulation layer I9 and the insulation shielding layer 10 are formed by co-extrusion, a copper belt layer 11 is arranged outside the insulation shielding layer 10, the insulation core II comprises a conductor II 12, a heat insulation belt II 13 is arranged outside the conductor II 12, an insulation layer II 14 is arranged outside the heat insulation belt II 13, and the thickness of the insulation layer II 14 is not less than 3.95mm.
The utility model discloses overall structure sets up rationally, conductor I adopts compound hank type soft structure, clearance packing glass silk fibre at conductor I, the cable is at the operation in-process, I temperature of conductor risees, glass silk fibre heat absorption, I operation highest temperature of conductor can improve 10-20 ℃, glass fibre has higher heat resistance and intensity, and certain elasticity has, wholly increase the pliability of cable, I outer adoption heat-insulating band I of conductor overlaps around the package, II outer adoption heat-insulating bands II of conductor, have the thermal-insulated effect, reduce II heat of conductor I and conductor to insulating transmission, reduce insulating temperature, reduce insulating thermal ageing, improve cable life, pottery polyolefin inner sheath is under 360 ℃ high temperature or flame, can be burnt into complete hard pottery form casing rapidly, not melting under high temperature, the shrink, do not drip, good fire prevention effect has, armor outside winding polyethylene filler strip, play the buffering, the shockproof effect, the oversheath adopts oil-resistant type polyvinyl chloride sheath, make the cable have good resistant oily performance.
The utility model provides a thinking and method, the method and the way of specifically realizing this technical scheme are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as the utility model discloses a protection range, each component that does not make clear and definite in this embodiment all can be realized with prior art.
Claims (8)
1. The utility model provides a modified is medium voltage power cable for converter which characterized in that: it includes a plurality of insulation core I and insulation core II, the cable core is constituteed with insulation core II transposition to insulation core I be equipped with ceramic polyolefin inner sheath (1) in the cable core outside pottery polyolefin inner sheath (1) outside is equipped with armor (2) outside is equipped with buffer strip (3) take precautions against earthquakes buffer strip (3) outside is equipped with oversheath (4), insulation core I includes conductor I (5) the intussuseption of conductor I (5) clearance is filled with endothermic packing (6) I (5) outside conductor I (5) is equipped with heat insulating tape I (7) the heat insulating tape I (7) outside is equipped with conductor shielding layer (8) outside is equipped with insulating layer I (9) outside is equipped with insulating shielding layer (10) the insulating shielding layer (10) outside is equipped with copper tape layer (11), insulation core II includes conductor II (12) the conductor II (12) outside is equipped with heat insulating tape II (13) insulating layer II (13).
2. The improved medium voltage power cable for frequency converters according to claim 1, characterized in that: the thickness of the ceramic polyolefin inner sheath (1) is 4.0mm.
3. The improved medium voltage power cable for frequency converters of claim 1, characterized in that: the armor layer (2) is formed by copper strip armor.
4. The improved medium voltage power cable for frequency converters according to claim 1, characterized in that: the shockproof buffer strip (3) is a polyethylene foaming filling strip.
5. The improved medium voltage power cable for frequency converters according to claim 1, characterized in that: the outer sheath (4) is an oil-resistant polyvinyl chloride sheath, and the thickness of the outer sheath is not less than 4.23mm.
6. The improved medium voltage power cable for frequency converters according to claim 1, characterized in that: the conductor I (5) is formed by twisting a plurality of strands of fine copper wire strands, the heat absorption filling (6) is filled in the twisting gaps of the conductor I (5), and the heat absorption filling (6) is made of glass fiber.
7. The improved medium voltage power cable for frequency converters according to claim 1, characterized in that: the conductor shielding layer (8), the insulating layer I (9) and the insulating shielding layer (10) are formed by co-extrusion.
8. The improved medium voltage power cable for frequency converters of claim 1, characterized in that: the thickness of the insulating layer II (14) is not less than 3.95mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221650605.1U CN217880894U (en) | 2022-06-30 | 2022-06-30 | Improved medium-voltage power cable for frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221650605.1U CN217880894U (en) | 2022-06-30 | 2022-06-30 | Improved medium-voltage power cable for frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217880894U true CN217880894U (en) | 2022-11-22 |
Family
ID=84099552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221650605.1U Active CN217880894U (en) | 2022-06-30 | 2022-06-30 | Improved medium-voltage power cable for frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217880894U (en) |
-
2022
- 2022-06-30 CN CN202221650605.1U patent/CN217880894U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 9 Yuanjiang Road, Lusigang Economic Development Zone, Qidong City, Nantong City, Jiangsu Province, 226200 Patentee after: Yusheng Electric Co.,Ltd. Country or region after: China Address before: 214205 No.101 hengtongdao, Xinjie street, Yixing City, Wuxi City, Jiangsu Province Patentee before: Yusheng Electric Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |