CN214796842U - Low temperature resistant instrument cable for offshore wind turbine - Google Patents
Low temperature resistant instrument cable for offshore wind turbine Download PDFInfo
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- CN214796842U CN214796842U CN202120638112.5U CN202120638112U CN214796842U CN 214796842 U CN214796842 U CN 214796842U CN 202120638112 U CN202120638112 U CN 202120638112U CN 214796842 U CN214796842 U CN 214796842U
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Abstract
The utility model provides a low temperature resistant offshore wind turbine instrument cable which the structure is: a conductor wrapped with an insulating layer forms a wire core; the two wire cores are twisted in pairs to form a twisted wire core group; a cable core is formed by twisting a plurality of groups of twisted wire core groups and filling ropes; the cable core is sequentially coated with a polyester tape layer, a low-smoke halogen-free flame-retardant tape layer, a composite metal shielding layer and an outer sheath; the conductor is a category 2 stranded copper conductor meeting IEC60228 requirements; the insulating layer is made of cross-linked polyethylene insulating material; the polyester tape layer is formed by overlapping and lapping polyester tapes; the low-smoke halogen-free flame-retardant belt layer is formed by overlapping and wrapping halogen-free flame-retardant belts; the composite metal shielding layer consists of an inner aluminum-plastic composite belt layer and an outer tinned copper wire braid layer; the outer sheath is made of thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material. The cable has good anti-interference performance, low temperature resistance, ultraviolet resistance, ozone resistance, oil resistance and the like, so that the cable has better environmental adaptability and higher safety.
Description
Technical Field
The utility model relates to an instrument cable for marine wind turbine of low temperature resistant, in particular to instrument cable for marine wind turbine of low temperature resistant belongs to cable technical field.
Background
In the environment of ocean ultra-low temperature, the conventional low temperature resistant cable can only reach-40 ℃, the use requirement can not be met, and the cable in the extremely-low temperature environment is accompanied with a complex working environment, such as some fan equipment used outdoors, and most of the cable is in a heavy oil pollution environment when in use. The cable is extremely limited by the environment, and has the characteristics of excellent low temperature resistance (50 ℃ below zero), ultraviolet resistance, ozone resistance, oil resistance and the like. How to ensure the basic electrical performance and mechanical performance of the cable, the cable can be normally used in the extreme environment, which brings great difficulty to the overall design of the cable.
Disclosure of Invention
The utility model aims at providing a low temperature resistant offshore wind turbine instrument cable requires to have good electrical property, oil resistance, low temperature resistance. In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the instrument cable for the low-temperature-resistant offshore wind turbine has the advantages that the outer diameter range of the cable is 18.5-25.4 mm; the structure is as follows: a conductor wrapped with an insulating layer forms a wire core; the two wire cores are twisted in pairs to form a twisted wire core group; a cable core is formed by twisting a plurality of groups of twisted wire core groups and filling ropes (4); the cable core is sequentially coated with a polyester tape layer, a low-smoke halogen-free flame-retardant tape layer, a composite metal shielding layer and an outer sheath;
the conductor is a category 2 stranded copper conductor meeting IEC60228 requirements; the conductor is formed by twisting a plurality of thin copper wires, and the twisting pitch diameter ratio is 18-25 times; the diameter range of the thin copper wire is phi 0.15 mm-phi 0.30 mm; the cross-sectional area of the conductor ranges from 1.0mm 2mm to 2.5mm 2;
the insulating layer is made of a cross-linked polyethylene insulating material; the nominal thickness range of the insulating layer is 0.6-0.8 mm;
the stranding pitch diameter ratio of the stranded wire core group is 20-25 times;
the stranding pitch diameter ratio of the cable core is 10-20 times;
the polyester tape layer is formed by overlapped and lapped polyester tapes, and the lapping rate is not less than 30%;
the low-smoke halogen-free flame-retardant belt layer is formed by overlapping and wrapping halogen-free flame-retardant belts, and the covering rate is not less than 30%;
the composite metal shielding layer is composed of an inner aluminum-plastic composite belt layer and an outer tinned copper wire braid layer;
the aluminum-plastic composite belt layer is formed by wrapping an aluminum-plastic composite belt, the aluminum surface of the aluminum-plastic composite belt faces outwards, the plastic surface of the aluminum-plastic composite belt faces inwards, and the covering rate is not less than 30%;
the tinned copper wire braid is formed by braiding tinned copper wires, the braiding density is not less than 85%, and the nominal diameter is phi 0.15 mm-phi 0.30 mm;
the outer sheath is made of thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material; the nominal thickness range of the outer sheath is 1.2-2.2 mm.
Preferably, the method comprises the following steps:
the outer sheath is made of low-temperature-resistant, ultraviolet-proof, ozone-resistant, oil-resistant, thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material, and the type/brand of the sheath material can be DW 9025C. The filling rope is a flame-retardant high-temperature filling rope with the diameter of 1.5 mm. The nominal thickness of the polyester tape was 0.05 mm; the halogen-free flame retardant tape has a nominal thickness of 0.2 mm; the nominal thickness of the aluminum-plastic composite belt is 0.1 mm; the diameter of the tinned copper wire braid is 0.15 mm.
For the twisted pair wire core group of 2 groups, the sectional area of the conductor is 1.5mm2The cable of (3), the outer diameter of the cable is 19.3 mm. The twist pitch ratio of the cable core is 16 times. The diameter of the thin copper wire forming the conductor is phi 0.15mm, and the stranding pitch diameter ratio of the conductor is 20 times; the thickness of the insulating layer is 0.6 mm; the stranding pitch diameter ratio of the stranded wire core group is 20 times. The thickness of the outer sheath is 1.5 mm.
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
the twisted pair core group of the cable is designed, so that the cable has good signal characteristics; the composite shielding of the aluminum-plastic composite belt and the tinned copper wire braided shielding has the signal attenuation resistance;
the outer sheath is made of low-temperature-resistant, ultraviolet-proof, ozone-resistant, oil-resistant, thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material, and has excellent low-temperature-resistant performance, oil-resistant performance, ultraviolet-proof performance, ozone-resistant, low-smoke, halogen-free performance and the like.
The twisting design of the conductor, the twisted wire core and the cable core of the cable ensures that the cable has good and balanced tensile and bending properties.
The design of the insulating layer and the outer sheath of the cable ensures that the thickness and the bending performance of the cable are ensured on the premise of having insulating and protecting performances.
The low-temperature-resistant instrument cable for the offshore wind turbine with the structure can be used in extreme weather and environment at minus 50 ℃, and is suitable for occasions for the offshore wind turbine. The cable has good oil resistance, can be installed in heavy oil polluted environment, has excellent ozone resistance, and can resist corrosion in ozone environment.
Drawings
Fig. 1 is a schematic view of the radial cross section structure of the present invention.
In the figure: 1. conductor, 2, insulating layer, 3, twisted pair core group, 4, filling rope, 5, cable core, 6, polyester band layer, 7, low smoke and zero halogen flame retardant belt layer, 8, aluminum-plastic composite belt layer, 9, tinned copper wire weaving layer, 10, oversheath, 11, sinle silk.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The embodiment is shown in figure 1, the outer diameter of the instrument cable for the low-temperature-resistant offshore wind turbine is 18.5-25.4 mm; the structure is as follows:
a conductor 1 coated with an insulating layer 2 forms a wire core 11;
the twisted pair wire core group 3 is formed by twisting two wire cores in pairs;
a cable core 5 is formed by twisting a plurality of groups of twisted wire core groups 3 and filling ropes 4;
the cable core 5 is sequentially coated with a polyester tape layer 6, a low-smoke halogen-free flame-retardant tape layer 7, a composite metal shielding layer and an outer sheath 10;
the conductor is a category 2 stranded copper conductor meeting IEC60228 requirements; the conductor is formed by twisting a plurality of thin copper wires, and the twisting pitch diameter ratio is 18-25 times; the diameter range of the thin copper wire is phi 0.15 mm-phi 0.30 mm; the cross-sectional area of the conductor ranges from 1.0mm 2mm to 2.5mm 2;
the insulating layer is made of a cross-linked polyethylene insulating material; the nominal thickness range of the insulating layer is 0.6-0.8 mm;
the stranding pitch diameter ratio of the stranded wire core group 3 is 20-25 times;
the stranding pitch diameter ratio of the cable core 5 is 10-20 times;
the polyester tape layer 6 is formed by overlapping and wrapping polyester tapes, and the covering rate is not less than 30%;
the low-smoke halogen-free flame-retardant belt layer 7 is formed by overlapping and wrapping halogen-free flame-retardant belts, and the covering rate is not less than 30%;
the composite metal shielding layer is composed of an inner aluminum-plastic composite tape layer 8 and an outer tinned copper wire braid layer 9;
the aluminum-plastic composite belt layer is formed by wrapping an aluminum-plastic composite belt, the aluminum surface of the aluminum-plastic composite belt faces outwards, the plastic surface of the aluminum-plastic composite belt faces inwards, and the covering rate is not less than 30%;
the tinned copper wire braid is formed by braiding tinned copper wires, the braiding density is not less than 85%, and the nominal diameter is phi 0.15 mm-phi 0.30 mm;
the outer sheath is made of thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material; the nominal thickness range of the outer sheath is 1.2-2.2 mm.
In the present example:
the cable of the embodiment is 2 pairs of stranded wire core groups, and the sectional area of the conductor is 1.5mm2The outer diameter of the cable is generally 19.3mm under the conductor with the specification.
The filling rope adopted in the embodiment is a flame-retardant high-temperature filling rope with the diameter of 1.5mm, and the flame-retardant high-temperature filling rope has the characteristics of high temperature resistance, softness, flame-retardant performance, high strength and the like.
The polyester tape of the example is 0.05mm in nominal thickness, the halogen-free flame retardant tape is 0.2mm in nominal thickness, and the aluminum-plastic composite tape is 0.1mm in nominal thickness.
In the conductor of the embodiment, the diameter of the adopted thin copper wire is phi 0.15 mm; the stranding pitch diameter ratio of the conductor is 20 times;
the thickness of the insulating layer in this example was 0.6 mm;
the stranding pitch diameter ratio of the stranded wire core group is 20 times;
the stranding pitch diameter ratio of the cable core is 16 times;
the diameter of the tinned copper wire braided layer is phi 0.15 mm;
the outer sheath is made of low-temperature-resistant, ultraviolet-proof, ozone-resistant, oil-resistant, thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material, the number of the sheath material is DW 9025C, and the thickness of the outer sheath is 1.5 mm.
For the most common cable of this example, in order to optimize the effect, the above structure is adopted, and it is tested that:
the cable has excellent oil resistance, and the outer sheath of the cable is immersed in IRM902 oil at 70 ℃ for 4 hours.
The cable has excellent low temperature resistance, the outer sheath of the cable is sheathed at the low temperature of minus 50 ℃ for 12 hours, and the low-temperature stretching is more than or equal to 110 percent.
The cable has excellent ultraviolet resistance, and the color identification is not influenced after the outer sheath sample is dried and irradiated and is subjected to drying-condensation circulation for 15 times (5 multiplied by 24 h).
The cable has excellent ozone resistance, and the outer sheath sample does not crack after being exposed in dry circulating air with the temperature of (25 +/-2) DEG C and the ozone concentration of 85 percent.
The material used by the cable does not contain toxic components such as halogen and the like.
The present invention is not limited to the above embodiments, and all technical solutions formed by equivalent or equivalent replacement fall into the protection scope claimed in the present invention.
Claims (8)
1. A low-temperature-resistant instrument cable for an offshore wind turbine is characterized in that the outer diameter range of the cable is 18.5-25.4 mm; the structure of the cable is as follows:
a conductor (1) coated with an insulating layer (2) forms a wire core (11);
the twisted pair wire core group (3) is formed by twisting two wire cores in pairs;
a cable core (5) is formed by twisting a plurality of pairs of stranded wire core groups (3) and filling ropes (4);
the cable core (5) is sequentially coated with a polyester tape layer (6), a low-smoke halogen-free flame-retardant tape layer (7), a composite metal shielding layer and an outer sheath (10);
the conductor is a category 2 stranded copper conductor meeting IEC60228 requirements; the conductor is formed by twisting a plurality of thin copper wires, and the twisting pitch diameter ratio is 18-25 times; the diameter range of the thin copper wire is 0.15 mm-0.30 mm; the range of the cross-sectional area of the conductor is 1.0mm2～2.5mm2；
The insulating layer is made of a cross-linked polyethylene insulating material; the nominal thickness range of the insulating layer is 0.6-0.8 mm;
the stranding pitch diameter ratio of the stranded wire core group (3) is 20-25 times;
the stranding pitch diameter ratio of the cable core (5) is 10-20 times;
the polyester tape layer (6) is formed by overlapping and wrapping polyester tapes, and the cover overlapping rate is not less than 30%;
the low-smoke halogen-free flame-retardant belt layer (7) is formed by overlapping and wrapping halogen-free flame-retardant belts, and the covering rate is not less than 30%;
the composite metal shielding layer is composed of an inner aluminum-plastic composite tape layer (8) and an outer tinned copper wire braid layer (9);
the aluminum-plastic composite belt layer is formed by wrapping an aluminum-plastic composite belt, the aluminum surface of the aluminum-plastic composite belt faces outwards, the plastic surface of the aluminum-plastic composite belt faces inwards, and the covering rate is not less than 30%;
the tinned copper wire braid layer is formed by braiding tinned copper wires, the braiding density is not less than 85%, and the nominal diameter is 0.15-0.30 mm;
the outer sheath is made of thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath material; the nominal thickness range of the outer sheath is 1.2-2.2 mm.
2. The instrument cable for low temperature resistant offshore wind turbine according to claim 1, wherein the twisted pair core group is 2 groups, and the cross-sectional area of the conductor is 1.5mm2The outer diameter of the cable is 19.3 mm.
3. The instrument cable for the low temperature resistant offshore wind turbine according to claim 2, wherein the filler rope is a flame retardant high temperature filler rope having a diameter of 1.5 mm.
4. The instrument cable for the low temperature resistant offshore wind turbine according to claim 2, wherein the cable core has a twist pitch ratio of 16 times.
5. The instrument cable for a low temperature resistant offshore wind turbine according to claim 1, wherein the polyester tape has a nominal thickness of 0.05 mm; the halogen-free flame retardant tape is of nominal thickness 0.2 mm.
6. The instrument cable for the low temperature resistant offshore wind turbine according to claim 1, wherein the aluminum-plastic composite tape has a nominal thickness of 0.1 mm; the diameter of the tinned copper wire braid is 0.15 mm.
7. The instrument cable for the low temperature-resistant offshore wind turbine according to claim 2, wherein the diameter of the fine copper wire constituting the conductor is phi 0.15mm, and the twist pitch diameter ratio of the conductor is 20 times; the thickness of the insulating layer is 0.6 mm; the stranding pitch diameter ratio of the stranded wire core group is 20 times.
8. The instrument cable for a low temperature resistant offshore wind turbine according to claim 2, wherein the outer sheath has a thickness of 1.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120638112.5U CN214796842U (en) | 2021-03-30 | 2021-03-30 | Low temperature resistant instrument cable for offshore wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120638112.5U CN214796842U (en) | 2021-03-30 | 2021-03-30 | Low temperature resistant instrument cable for offshore wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214796842U true CN214796842U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120638112.5U Active CN214796842U (en) | 2021-03-30 | 2021-03-30 | Low temperature resistant instrument cable for offshore wind turbine |
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| Country | Link |
|---|---|
| CN (1) | CN214796842U (en) |
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2021
- 2021-03-30 CN CN202120638112.5U patent/CN214796842U/en active Active
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