CN210640044U - Control nuclear cable for offshore nuclear power platform - Google Patents
Control nuclear cable for offshore nuclear power platform Download PDFInfo
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- CN210640044U CN210640044U CN201922117804.0U CN201922117804U CN210640044U CN 210640044 U CN210640044 U CN 210640044U CN 201922117804 U CN201922117804 U CN 201922117804U CN 210640044 U CN210640044 U CN 210640044U
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Abstract
The utility model discloses a marine nuclear power control cable for platform, its main points are: including the thread core, separate the oxygen layer, around covering and oversheath. The thread core has 3, and 3 thread cores's structure is the same, all includes sinle silk conductor, sinle silk insulating layer, sinle silk around covering and sinle silk shielding layer. The conductor of the wire core is regularly twisted by tinned copper wires. The core insulating layer is wrapped outside the core conductor by ethylene propylene rubber extrusion or cross-linked polyolefin. The sinle silk sets up outside the sinle silk insulating layer around the package. The wire core shielding layer is woven by adopting tinned copper wires outside the wire core wrapping layer. 3 main wire cores are stranded to form the cable. The oxygen isolation layer is made of low-smoke halogen-free high-flame-retardant material and is extruded outside the main wire cores of the 3 stranded cables. The wrapping layer comprises a first wrapping layer and a second wrapping layer, the first wrapping layer is wrapped outside the oxygen separation layer by adopting a halogen-free tape, and the second wrapping layer is wrapped outside the first wrapping layer by adopting a halogen-free tape. The outer sheath is extruded outside the wrapping layer by adopting a cross-linked polyolefin material.
Description
Technical Field
The utility model relates to a power cable technical field specifically is a marine nuclear power control cable for platform.
Background
The offshore nuclear power platform is an offshore movable small-sized nuclear power station, is an organic combination of a small-sized nuclear reactor and ship engineering, can provide safe and effective energy supply for offshore oil exploitation and remote islands, and can also be used in the fields of high-power ships and seawater desalination. The offshore nuclear power platform is the Chinese initiative technology. The technology fills the technical blank of China in the field of civil nuclear powered ships, forms a core technology with independent intellectual property rights, and has great significance and profound influence on development of new energy and global energy for China. The small nuclear power plant is arranged in a dock or anchored near the coast so as to be convenient for connecting a cable to transmit power. In the civil field, the power supply, heat supply and seawater desalination in the fields of offshore oil and gas field exploitation, island development and the like can be reliably and stably supplied with electric power, the propulsion power can also be supplied to the icebreaker, the power supply has many applications in the military field, the nuclear power military and civil fusion development of ships can be promoted, and meanwhile, the offshore nuclear power platform is also a powerful support for offshore strong countries.
At present, the oil exploitation platform in China mainly adopts a gas turbine to supply power, the average electricity cost per degree is about 5 pieces of money, if the offshore nuclear power platform is adopted to supply power, the average electricity cost per degree is lower than 2 pieces of money, the cost can be greatly reduced, and meanwhile, the noise and the emission of waste gas are avoided, and the pollution to the environment can be greatly reduced.
Nuclear cables are important electrical components of nuclear power plants, which are mainly used inside and outside nuclear reactor cabins for power, control and communication systems. Because the operating environment of nuclear cables is very harsh and the standard requirements for nuclear cables are very high, the nuclear cables must withstand the combined effects of electric field, temperature, oxygen, nuclear radiation, steam, moisture, ozone, various chemical substances, mechanical stress, thermal deformation, vibration, wear, fatigue, creep and other physical causes under the nuclear environment conditions during the whole life. Therefore, for ships and offshore nuclear power platforms, the research and development of corresponding nuclear cables are urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, the security is better, uses reliable marine nuclear power control nuclear cable for platform.
Realize the utility model discloses the basic technical scheme of purpose is: a control nuclear cable for an offshore nuclear power platform is structurally characterized in that: including the thread core, separate the oxygen layer, around covering and oversheath.
The thread core has 3, and 3 thread cores's structure is the same, all includes sinle silk conductor, sinle silk insulating layer, sinle silk around covering and sinle silk shielding layer. The conductor of the wire core is regularly twisted by tinned copper wires. The core insulating layer is extruded outside the core conductor by adopting ethylene propylene rubber or cross-linked polyolefin, and is irradiated and cross-linked after being extruded. The sinle silk sets up outside the sinle silk insulating layer around the package. The wire core shielding layer is woven by adopting tinned copper wires outside the wire core lapping layer, the weaving density is not less than 88%, and the lapping and covering rate is not less than 30%. 3 main wire cores are stranded to form the cable. The oxygen isolation layer is made of low-smoke halogen-free high-flame-retardant material and is extruded outside the main wire cores of the 3 stranded cables.
The wrapping layer comprises a first wrapping layer and a second wrapping layer, the first wrapping layer is wrapped outside the oxygen separation layer by adopting a halogen-free tape, the wrapping covering rate is not less than 30%, the second wrapping layer is wrapped outside the first wrapping layer by adopting a halogen-free tape, and the wrapping covering rate is not less than 30%. The outer sheath is extruded outside the wrapping layer by adopting a cross-linked polyolefin material, and the outer sheath is irradiated after being extruded.
The technical scheme based on the basic technical scheme is as follows: an armor layer is also included. The armor layer is woven outside the oxygen-proof layer by adopting a tinned copper wire, the weaving density is not less than 88%, the first wrapping layer of the wrapping layer is wrapped outside the armor layer by adopting a halogen-free belt, and the wrapping and covering rate is not less than 30%.
The technical scheme based on the corresponding technical schemes is as follows: the core insulating layer includes a first core insulating layer and a second core insulating layer. The thickness of the core insulation layer is 1.0 mm to 2.6 mm. The section of a wire core of the wire core conductor is less than 10 square millimeters, the thickness of the first wire core insulating layer is 0.12-0.15 millimeters, and the rest thickness is the second wire core insulating layer; the section of the core conductor is 10 square millimeters or more, the thickness of the first core insulating layer is 0.4 to 0.5 millimeters, and the rest thickness is the second core insulating layer.
The first wire core insulating layer is made of ethylene propylene rubber with the insulation resistance constant larger than or equal to 5000M omega.
The second wire core insulating layer is made of ethylene propylene rubber with the oxygen index being more than or equal to 35.
The first wire core insulating layer and the second wire core insulating layer are wrapped outside the wire core conductor in a double-layer co-extrusion mode, and irradiation crosslinking is carried out after wrapping.
The technical scheme based on the corresponding technical schemes is as follows: and (3) after extrusion irradiation of the section of the wire core conductor with the thickness of 50 square millimeters or more, discharging for at least 48 hours in a drying room with the temperature of 50-60 ℃.
The technical scheme based on the corresponding technical schemes is as follows: the core insulating layer includes a first core insulating layer and a second core insulating layer. The thickness of the wire core insulating layer is 0.7 mm to 2.0 mm; the section of a wire core of the wire core conductor is less than 10 square millimeters, the thickness of the first wire core insulating layer is 0.12-0.15 millimeters, and the rest thickness is the second wire core insulating layer; the section of the core conductor is 10 square millimeters or more, the thickness of the first core insulating layer is 0.4 to 0.5 millimeters, and the rest thickness is the second core insulating layer.
The first wire core insulating layer is made of a cross-linked polyolefin material with an insulation resistance constant greater than or equal to 5000M omega.
The first core insulating layer is made of a cross-linked polyolefin material with an oxygen index greater than or equal to 35.
The first wire core insulating layer and the second wire core insulating layer are wrapped outside the wire core conductor in a double-layer co-extrusion mode. The cross-linking of the cross-linked polyolefin is by irradiation with a thermal extension after irradiation of 30 to 50%.
The technical scheme based on the corresponding technical schemes is as follows: and (3) after extrusion irradiation of the section of the wire core conductor with the thickness of 50 square millimeters or more, discharging for at least 48 hours in a drying room with the temperature of 50-60 ℃.
The technical scheme based on the corresponding technical schemes is as follows: also includes a filler core. The cabling center is filled with low-smoke halogen-free high-flame-retardant materials to form a filling core.
The technical scheme based on the corresponding technical schemes is as follows: the wire core wrapping layer is wrapped outside the wire core insulating layer by adopting a polyimide film, and the wrapping and covering rate is not less than 30%.
The technical scheme based on the corresponding technical schemes is as follows: the thermal extension of the outer sheath is less than or equal to 15% after irradiation, and the performance of the extruded and irradiated core conductor with the core section of 50 square millimeters or more is detected after discharging for at least 48 hours in a drying room at the temperature of 50-60 ℃.
The technical scheme based on the corresponding technical schemes is as follows: during cabling, the head part is bound by wrapping at least 5 meters of polyester tape, the middle part is not wrapped, and the tail part of the cabling is bound by wrapping at least 5 meters of polyester tape.
The utility model discloses following beneficial effect has: (1) because marine nuclear power platform is the china initiative technique, and the utility model discloses a marine nuclear power platform is with control nuclear cable both to satisfy boats and ships and platform requirement and can satisfy the nuclear level cable requirement again, has consequently also filled corresponding blank, belongs to the utility model of pioneering nature. The utility model discloses a marine nuclear power control cable for platform simple structure, the security is better, uses reliably. Bear 50 years life-span aging test, after the experiment, the cable structure keeps intact, unusual phenomena such as obvious deformation, fracture, insulating, sheath physical and mechanical properties: the retention rate of tensile strength and elongation at break is more than or equal to 50 percent, after 20 times of bending and looping are soaked in water for 1h, a 5min pressure test is carried out according to 3150V/mm, and the sample is not punctured. The utility model discloses a marine nuclear power is main sinle silk of control nuclear cable for platform is equipped with the shielding layer, possesses the anti-electromagnetic interference ability, and the electromagnetic signal of cable itself does not influence other precision instrument equipment, prevents simultaneously that other electrical equipment from causing the interference to cable transmission signal itself, uses the good reliability.
(2) The utility model discloses a marine nuclear power platform is with control nuclear cable can satisfy the requirement of land nuclear level cable, and the insulating layer adopts double-deck crowded technique altogether, and the material of the different performance of the same kind of material for the two-layer insulating layer can guarantee to satisfy electrical property, mechanical properties simultaneously, can improve insulating fire behavior again, satisfies the requirement of bundling burning B class.
(3) The utility model discloses an offshore nuclear power platform is with control nuclear cable uses for the first time and separates oxygen layer structure, cancels traditional cable and fills materials cabling filling forms such as inorganic fiber or PP, adopts the crowded package of extruding machine to separate the oxygen layer as filling structure, improves the whole oxygen index requirement of cable, reduces combustible material, has strengthened the holistic fire behaviour of cable greatly, and low smoke and zero halogen is nontoxic. The oxygen-isolating layer is externally provided with a wrapping layer, so that the fire resistance of the cable can be further improved.
(4) The utility model discloses an offshore nuclear power is control nuclear cable for platform receives the irradiation that conventional irradiation aged can stand gamma source (as 60Co source), and cumulative metering 1100kGY, the dose rate is not more than 10kGY/h, and cable construction keeps complete, does not have unusual phenomena such as obvious deformation, fracture. After the material is bent by 20 times and is soaked in water for 1h, the material is subjected to a 5min pressure test according to 3150V/mm, and a sample is not punctured.
(5) The utility model discloses an offshore nuclear power is control nuclear cable DBE analogue test for platform stands the irradiation of gamma source (as 60Co source), accumulative total measurement 750kGY, the dose rate is not more than 10kGY/h and subsequent chemistry sprays the experiment, cable structure remains intact, there is not obvious abnormal phenomena such as deformation, fracture, 40 times bend to circle and soak 1h after, carry out 5min withstand voltage test according to 3150V/mm, the sample does not puncture.
(6) The utility model discloses a marine nuclear power is control nuclear cable for platform stands behind the DBE analogue test, carries out the submergence experiment, satisfies cable construction after the experiment finishes and keeps intact, does not have unusual phenomena such as obvious deformation, fracture, and 40 times are crooked to be circled and are soaked 1h after, carry out 5min withstand voltage test according to 3150V/mm, and the sample does not puncture.
(7) The utility model discloses a marine nuclear power is control nuclear cable for platform carries out low temperature-20 ℃ bending experiment: in a bend test or anatomical inspection, any of the component parts do not exhibit deformation or cracking, or other damage that significantly impairs the performance of the cable.
(8) The utility model discloses an offshore nuclear power platform carries out air tank aging test (125 ℃, 400h) afterwards and withstand voltage and insulation resistance test and apparent inspection with control nuclear cable, still accords with the relevant regulation among the GJB 1916, and restrictive coating air tank tensile strength is greater than or equal to 60% after ageing, and the elongation retention is greater than or equal to 60%.
(9) The utility model discloses a marine nuclear power platform is with control nuclear cable conductor direct current resistance, insulation resistance, withstand voltage test all accord with corresponding regulation in the GJB 1916.
(10) The utility model discloses an offshore nuclear power platform is with control nuclear cable restrictive coating carries out sheath heat altered shape test (going on with reference to GJB 1916) under 121 ℃ temperature, time 1h, and heat altered shape is less than or equal to 30%.
(11) The utility model discloses a marine nuclear power is behind the armor is add to the control nuclear cable for platform, can improve the tensile strength of cable installation laying process.
Drawings
Fig. 1 is the structure schematic diagram of the control nuclear cable for the offshore nuclear power platform of the present invention.
Fig. 2 is a schematic structural diagram of a control nuclear cable for an offshore nuclear power platform with another structure according to the present invention.
The reference numbers in the drawings are:
a main wire core 1, a wire core conductor 1-1, a wire core insulating layer 1-2,
first core insulating layers 1-21, second core insulating layers 1-22,
a wire core wrapping layer 1-3, a wire core shielding layer 1-4,
the filling core (2) is filled with a filler,
the oxygen-isolating layer (3) is provided,
the outer layer (4) of the armor layer,
the wrapping layer (5) is wrapped on the surface of the steel wire,
an outer sheath 6.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings. The description of the orientation of the utility model is performed according to the orientation shown in fig. 1, that is, the up-down left-right direction shown in fig. 1 is the up-down left-right direction of the description, the side towards which fig. 1 faces is the front side, and the side departing from fig. 1 is the rear side.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
When a value or range of values, preferred range or list of lower preferable values and upper preferable values is given, it is to be understood that it specifically discloses all ranges formed from any pair of values from any lower range limit or preferred value and any higher range limit or preferred value, regardless of whether ranges are separately disclosed. Where numerical ranges are described herein, unless otherwise stated, the ranges are intended to include the endpoints of the ranges and all integers and fractions within the ranges.
When the term "about" or "approximately" is used to describe a numerical value or an end of a range, the disclosure should be understood to include the specific numerical value or end point referred to.
(example 1)
See fig. 1, the utility model discloses a marine nuclear power control cable for platform includes the sinle silk 1, fills core 2, separates oxygen layer 3, around covering 5 and oversheath 6.
The 3 main wire cores 1 are identical in structure and respectively comprise a wire core conductor 1-1, a wire core insulating layer 1-2, a wire core wrapping layer 1-3 and a wire core shielding layer 1-4.
The core conductor 1-1 is regularly stranded by tinned copper wires, the core section of the core conductor 1-1 is 1-400 square millimeters, and the structure meets the standards of Q/320402 ACH033-2019 and GJB 1916-.
The core insulation layers 1-2 include first core insulation layers 1-21 and second core insulation layers 1-22. The thickness of the core insulation layer 1-2 is 1.0 mm to 2.6 mm.
The section of the core conductor 1-1 is less than 10 square millimeters, the thickness of the first core insulating layer 1-21 is 0.12 millimeters to 0.15 millimeters, and the rest thickness is the second core insulating layer 1-22.
The section of the core conductor 1-1 is 10 square millimeters or more, the thickness of the first core insulation layer 1-21 is 0.4 millimeters to 0.5 millimeters, and the rest thickness is the second core insulation layer 1-22.
The first wire core insulation layers 1-21 are made of Ethylene Propylene Rubber (EPR) materials, and the insulation resistance constant of the ethylene propylene rubber is larger than or equal to 5000M omega. The ethylene propylene rubber of grade FEW170-1 of the special cable material factory in the east Asia of Linhai City is adopted in the embodiment.
The second wire core insulation layers 1-22 are made of Ethylene Propylene Rubber (EPR) materials, and the oxygen index of the ethylene propylene rubber is larger than or equal to 35. The ethylene propylene rubber of grade FEW170-2 of the special cable material factory in the east Asia of Linhai City is adopted in the embodiment.
The first wire core insulating layer 1-21 and the second wire core insulating layer 1-22 are wrapped outside the wire core conductor 1-1 by double-layer co-extrusion, and are irradiated and crosslinked after being wrapped. The section of the core conductor 1-1 is 50 square millimeters or more, and the extruded and irradiated core is discharged for at least 48 hours in a drying room with the temperature of 50 ℃ to 60 ℃.
The core wrapping layer 1-3 is wrapped outside the core insulating layer 1-2 by adopting a polyimide film, the wrapping is smooth and has no wrinkles, and the wrapping covering rate is not less than 30%.
The core shielding layers 1-4 are braided outside the core lapping layers 1-3 by adopting tinned copper wires, the braiding density is not less than 88%, and the lapping and covering rate is not less than 30%.
The cable is formed by stranding 3 main wire cores 1, the cable forming center is filled with a low-smoke halogen-free high-flame-retardant material to form a filling core 2, and the crosslinked polyolefin (XLPO) of the brand FEW160-5 of the special cable material factory in the Asia east of the coastal city is adopted in the embodiment, so that the roundness of the cable is favorably improved. During cabling, the head is bound by wrapping at least 5 meters of polyester tape, the middle is not wrapped, and the tail of the cabling is bound by wrapping at least 5 meters of polyester tape, so that looseness is prevented.
The oxygen isolation layer 3 is made of a low-smoke halogen-free high-flame-retardant material and is extruded outside the main wire core 1 of 3 twisted cables, and the embodiment adopts cross-linked polyolefin (XLPO) with the brand number FEW160-5 of a special cable material factory in Asia east of the Shanghai city.
The wrapping layer 5 comprises a first wrapping layer and a second wrapping layer, the first wrapping layer adopts a halogen-free tape to wrap outside the oxygen separation layer 3, the wrapping covering rate is not less than 30%, the second wrapping layer adopts a halogen-free tape to wrap outside the first wrapping layer, and the wrapping covering rate is not less than 30%.
The outer sheath 6 is extruded outside the wrapping layer 5 by adopting a nuclear-grade irradiation cross-linked polyolefin material, the color is black, the outer sheath 6 is irradiated after being extruded, the thermal extension is less than or equal to 15 percent after irradiation, and the performance detection is carried out after the extrusion irradiation of the wire core section of the wire core conductor 1-1 of 50 square millimeters and more than 50 square millimeters is carried out in a drying room at the temperature of 50-60 ℃ for discharging for at least 48 hours. This example uses a cross-linked polyolefin (XLPO) available from the Yanghai, Asian east Special Cable works under the designation FHW 160-03.
The results of the tests on the basic electrical properties of the cable of this example are shown in table 1:
table 1: the cable electrical property parameters of the core insulation layer adopting ethylene propylene rubber are as follows:
(example 2)
The rest of this example is the same as example 1, except that:
the thickness of the core insulation layer 1-2 is 0.7 mm to 2.0 mm.
The section of the core conductor 1-1 is less than 10 square millimeters, the thickness of the first core insulating layer 1-21 is 0.12 millimeters to 0.15 millimeters, and the rest thickness is the second core insulating layer 1-22.
The section of the core conductor 1-1 is 10 square millimeters or more, the thickness of the first core insulation layer 1-21 is 0.4 millimeters to 0.5 millimeters, and the rest thickness is the second core insulation layer 1-22.
The first core insulation layers 1-21 are made of cross-linked polyolefin (XLPO) material having an insulation resistance constant greater than or equal to 5000M Ω. This example uses a grade of cross-linked polyolefin (XLPO) FPW160-01 from a special cable plant of Ardonia, Linhai.
The second core insulation layer 1-22 is made of a cross-linked polyolefin (XLPO) material having an oxygen index of 35 or more. This example uses a grade of cross-linked polyolefin (XLPO) FPW160-02 from a special cable plant of Ardonia, Linhai.
The first wire core insulating layer 1-21 and the second wire core insulating layer 1-22 are wrapped outside the wire core conductor 1-1 by double-layer co-extrusion. The cross-linking of the cross-linked polyolefin (XLPO) is by irradiation with a thermal extension after irradiation of 30% to 50%. The section of the core conductor 1-1 is 50 square millimeters or more, and the extruded and irradiated core is discharged for at least 48 hours in a drying room with the temperature of 50 ℃ to 60 ℃.
The results of the tests on the basic electrical properties of the cable of this example are shown in table 2:
table 2: the cable electrical performance parameters of the core insulation layer adopting cross-linked polyolefin (XLPO) are as follows:
(example 3)
Referring to fig. 2, the rest of the present embodiment is the same as embodiment 1, except that: an armor layer 4 is also provided.
The armor layer 4 adopts the tinned copper wire to weave outside separating the oxygen layer 3, and weaving density is not less than 88%, and first adopts the halogen-free area to wrap outside the armor layer 4 around the covering, and the covering rate is not less than 30% around the covering.
(example 4)
The rest of this example is the same as example 2, except that: an armor layer 4 is also provided.
The armor layer 4 adopts the tinned copper wire to weave outside separating the oxygen layer 3, and weaving density is not less than 88%, and first adopts the halogen-free area to wrap outside the armor layer 4 around the covering, and the covering rate is not less than 30% around the covering.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A control nuclear cable for an offshore nuclear power platform is characterized in that: the cable comprises a main cable core, an oxygen isolation layer, a wrapping layer and an outer sheath; the main wire cores are provided with 3 main wire cores, the 3 main wire cores have the same structure and respectively comprise a wire core conductor, a wire core insulating layer, a wire core wrapping layer and a wire core shielding layer; the core conductors are regularly twisted by adopting tinned copper wires; the core insulating layer is extruded outside the core conductor by adopting ethylene propylene rubber or cross-linked polyolefin, and irradiation cross-linking is carried out after extrusion; the wire core wrapping layer is wrapped outside the wire core insulating layer; the wire core shielding layer is braided outside the wire core lapping layer by adopting tinned copper wires, the braiding density is not less than 88%, and the lapping and covering rate is not less than 30%; 3 main wire cores are stranded into a cable; the oxygen isolation layer is wrapped outside the main wire cores of the 3 stranded cables by adopting a low-smoke halogen-free high-flame-retardant material;
the wrapping layer comprises a first wrapping layer and a second wrapping layer, the first wrapping layer is wrapped outside the oxygen separation layer by adopting a halogen-free tape, the wrapping and covering rate is not less than 30%, the second wrapping layer is wrapped outside the first wrapping layer by adopting a halogen-free tape, and the wrapping and covering rate is not less than 30%; the outer sheath is extruded outside the wrapping layer by adopting a cross-linked polyolefin material, and the outer sheath is irradiated after being extruded.
2. The control nuclear cable for an offshore nuclear power platform according to claim 1, wherein: the armor layer is also included; the armor layer is woven outside the oxygen-proof layer by adopting a tinned copper wire, the weaving density is not less than 88%, the first wrapping layer of the wrapping layer is wrapped outside the armor layer by adopting a halogen-free belt, and the wrapping and covering rate is not less than 30%.
3. The control nuclear power cable for an offshore nuclear power platform according to claim 1 or 2, characterized in that: the wire core insulating layer comprises a first wire core insulating layer and a second wire core insulating layer; the thickness of the wire core insulating layer is 1.0 mm to 2.6 mm; the section of a wire core of the wire core conductor is less than 10 square millimeters, the thickness of the first wire core insulating layer is 0.12-0.15 millimeters, and the rest thickness is the second wire core insulating layer; the section of a wire core of the wire core conductor is 10 square millimeters or more, the thickness of the first wire core insulating layer is 0.4 millimeter to 0.5 millimeter, and the rest thickness is the second wire core insulating layer;
the first wire core insulating layer is made of ethylene propylene rubber with the insulation resistance constant being greater than or equal to 5000M omega-km;
the second wire core insulating layer is made of ethylene propylene rubber with the oxygen index being more than or equal to 35;
the first wire core insulating layer and the second wire core insulating layer are wrapped outside the wire core conductor in a double-layer co-extrusion mode, and irradiation crosslinking is carried out after wrapping.
4. The control nuclear cable for an offshore nuclear power platform according to claim 3, wherein: and (3) after extrusion irradiation of the section of the wire core conductor with the thickness of 50 square millimeters or more, discharging for at least 48 hours in a drying room with the temperature of 50-60 ℃.
5. The control nuclear power cable for an offshore nuclear power platform according to claim 1 or 2, characterized in that: the wire core insulating layer comprises a first wire core insulating layer and a second wire core insulating layer; the thickness of the wire core insulating layer is 0.7 mm to 2.0 mm; the section of a wire core of the wire core conductor is less than 10 square millimeters, the thickness of the first wire core insulating layer is 0.12-0.15 millimeters, and the rest thickness is the second wire core insulating layer; the section of a wire core of the wire core conductor is 10 square millimeters or more, the thickness of the first wire core insulating layer is 0.4 millimeter to 0.5 millimeter, and the rest thickness is the second wire core insulating layer;
the first wire core insulating layer is made of a cross-linked polyolefin material with the insulation resistance constant of more than or equal to 5000M omega-km;
the first core insulating layer is made of a cross-linked polyolefin material with an oxygen index greater than or equal to 35;
the first wire core insulating layer and the second wire core insulating layer are wrapped outside the wire core conductor in a double-layer co-extrusion mode; the cross-linking of the cross-linked polyolefin is by irradiation with a thermal extension after irradiation of 30 to 50%.
6. The control nuclear cable for an offshore nuclear power platform according to claim 5, wherein: and (3) after extrusion irradiation of the section of the wire core conductor with the thickness of 50 square millimeters or more, discharging for at least 48 hours in a drying room with the temperature of 50-60 ℃.
7. The control nuclear cable for an offshore nuclear power platform according to claim 3, wherein: also includes a filling core; the cabling center is filled with low-smoke halogen-free high-flame-retardant materials to form a filling core.
8. The control nuclear cable for an offshore nuclear power platform according to claim 5, wherein: also includes a filling core; the cabling center is filled with low-smoke halogen-free high-flame-retardant materials to form a filling core.
9. The control nuclear cable for an offshore nuclear power platform according to claim 3, wherein: the wire core wrapping layer is wrapped outside the wire core insulating layer by adopting a polyimide film, and the wrapping and covering rate is not less than 30%.
10. The control nuclear cable for an offshore nuclear power platform according to claim 5, wherein: the wire core wrapping layer is wrapped outside the wire core insulating layer by adopting a polyimide film, and the wrapping and covering rate is not less than 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922117804.0U CN210640044U (en) | 2019-11-29 | 2019-11-29 | Control nuclear cable for offshore nuclear power platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922117804.0U CN210640044U (en) | 2019-11-29 | 2019-11-29 | Control nuclear cable for offshore nuclear power platform |
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| Publication Number | Publication Date |
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| CN210640044U true CN210640044U (en) | 2020-05-29 |
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| CN201922117804.0U Active CN210640044U (en) | 2019-11-29 | 2019-11-29 | Control nuclear cable for offshore nuclear power platform |
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| CN (1) | CN210640044U (en) |
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2019
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