CN212782825U - Low temperature resistant control cable for nuclear power station - Google Patents
Low temperature resistant control cable for nuclear power station Download PDFInfo
- Publication number
- CN212782825U CN212782825U CN202021531746.2U CN202021531746U CN212782825U CN 212782825 U CN212782825 U CN 212782825U CN 202021531746 U CN202021531746 U CN 202021531746U CN 212782825 U CN212782825 U CN 212782825U
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- layer
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- retardant
- free flame
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- 239000003063 flame retardant Substances 0.000 claims abstract description 37
- 239000010949 copper Substances 0.000 claims abstract description 33
- 239000000779 smoke Substances 0.000 claims abstract description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052802 copper Inorganic materials 0.000 claims abstract description 32
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004020 conductor Substances 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 18
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 229920000728 polyester Polymers 0.000 claims abstract description 13
- 229920000098 polyolefin Polymers 0.000 claims abstract description 7
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 238000009941 weaving Methods 0.000 claims abstract description 4
- 239000003365 glass fiber Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 239000011490 mineral wool Substances 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
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 provides a low temperature resistant control cable for nuclear power station, the structure of cable is: the conductor is sequentially provided with a gluing type low-smoke halogen-free flame-retardant tape winding cladding and an insulating layer from inside to outside to form a wire core; the plurality of wire cores and the filling layer are stranded to form a cable core; the cable core is sequentially provided with a polyester tape winding layer, a low-smoke halogen-free flame-retardant tape winding layer, a shielding layer, an inner sheath and an outer sheath from inside to outside; the number of the wire cores is 2-37; the conductor is formed by stranding tin-plated copper monofilaments in multiple layers from inside to outside; the stranding direction of the tinned copper monofilaments on the outermost layer is the left direction, and the stranding direction of the tinned copper monofilaments on the adjacent layer is opposite; the gluing type low-smoke halogen-free flame-retardant belt is wrapped in a right direction; the insulating layer is made of polyolefin cold-resistant insulating material; the shielding layer is formed by weaving tinned copper wires; the inner sheath is made of low-smoke halogen-free flame-retardant material; the outer sheath is made of cold-resistant sheath materials. The control cable is simple in design, reasonable in structure, capable of being used in severe environment for a long time and applicable to mobile laying.
Description
Technical Field
The utility model relates to a low temperature resistant control cable, especially a control cable suitable for under rated voltage 0.6/1 kV's nuclear environment belongs to cable technical field.
Background
In some special environments, it is limited to use special materials for the control cable to cope with the severe environment, for example, the nuclear power plant needs to use low temperature resistant cable in cold regions with low temperature. If the conventional cable is not resistant to low temperature, the service life of the cable is greatly reduced when the cable is operated in a long-term severe environment.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model discloses control cable forces on in cable structure's improvement, increases the life of cable to can be suitable for the alternative use under low temperature environment.
Aiming at the laying problem in the low-temperature environment, the low-temperature-resistant cable is low-temperature-resistant, the bending radius is more 6 times of the radius of the cable, and the moving laying capacity is enhanced.
The technical scheme adopted for solving the technical problems is as follows:
a control cable for a low-temperature-resistant nuclear power station is characterized in that the applicable outer diameter range of the cable is 9.0-30.0 mm; the structure of the cable is as follows:
the conductor is sequentially provided with a gluing type low-smoke halogen-free flame-retardant tape winding cladding and an insulating layer from inside to outside to form a wire core;
the plurality of wire cores and the filling layer are stranded to form a cable core; the cable core is sequentially provided with a polyester tape winding layer, a low-smoke halogen-free flame-retardant tape winding layer, a shielding layer, an inner sheath and an outer sheath from inside to outside;
the number of the wire cores is 2-37, and the cabling pitch-diameter ratio of the cable core is not more than 20;
the cross-sectional area of the conductor is 1.5mm2～6mm2(ii) a The conductor is formed by stranding tin-plated copper monofilaments in multiple layers from inside to outside; the diameter range of the tin-plated copper monofilament is 0.32 mm-1.04 mm; the stranding pitch diameter ratio of the tinned copper monofilaments on the innermost layer of the conductor ranges from 16 to 25, and the stranding pitch diameter ratio of the tinned copper monofilaments on the outermost layer of the conductor ranges from 10 to 14; the stranding direction of the tinned copper monofilaments on the outermost layer is the left direction, and the stranding direction of the tinned copper monofilaments on the adjacent layer is opposite;
the gluing type low-smoke halogen-free flame-retardant belt is wound in the right direction, the width of the gluing type low-smoke halogen-free flame-retardant belt is 8-10 mm, and the covering rate of the wound covering is not less than 15%;
the insulating layer is made of polyolefin cold-resistant insulating material;
the width of the polyester tape wrapping layer is 15-40 mm, the wrapping and covering rate is not less than 25%, and the thickness of the polyester tape is 0.03-0.06 mm (specifically 0.04 mm);
the width of the low-smoke halogen-free flame-retardant tape (glass fiber cloth tape can be selected) of the wrapping layer is 15-40 mm, and the wrapping overlapping rate is not less than 25%;
the shielding layer is formed by weaving tinned copper wires, and the diameter range of single wires of the tinned copper wires is 0.12-0.30 mm;
the inner sheath is made of low-smoke halogen-free flame retardant material, such as a sheath material with the trademark of 495-2, and the thickness range of the inner sheath is 1.0 mm-1.2 mm.
The outer sheath is made of a cold-resistant sheath material (low-temperature-resistant polyolefin sheath material), for example, a sheath material with the brand number of HW469, and the thickness of the outer sheath ranges from 1.8 mm to 2.2 mm.
Preferably:
the nominal thickness of the gluing type low-smoke halogen-free flame-retardant belt is 0.1 mm. The gluing type high-flame-retardant low-smoke halogen-free flame-retardant belt can be selected from a gluing type high-flame-retardant glass fiber cloth belt, and is prepared by dip-coating a mixed solution which does not contain any halogen, is matched with a high-efficiency inorganic flame retardant, is added with a metal hydrate and the like on glass fibers, and performing the processes of gumming and thermosetting and the like.
The nominal thickness of the insulating layer is 0.7mm, and the thickness of the thinnest point is not less than 90-0.1 mm of the nominal value.
The filling layer is composed of a plurality of dust-free rock wool ropes, and the diameter of a single dust-free rock wool rope is 1.8-2.5 mm.
The nominal thickness of the glass fiber cloth tape is 0.2 mm.
The insulating material is used for improving the low temperature resistance of the cable.
The polyester tape effectively improves the insulation resistance between the wire core and the shielding, effectively prevents the breakdown problem between the wire core and the shielding, and the shielding is woven by tinned copper wires, so that the anti-interference performance is good, and the shielding inhibition coefficient is not more than 0.05. The sheath adopts the dual protection of the inner sheath and the outer sheath, and is a cold-resistant polyolefin sheath material, so that the low-temperature resistance of the cable is greatly improved.
The structure control cable adopts the tin-plated copper conductor to increase the oxidation resistance of the conductor on the premise of meeting the basic requirements of the electrical performance of the cable and the like. Wrap the low temperature resistance that the fire-retardant area of one deck rubberizing type low smoke and zero halogen increased the cable outside the conductor, and the sheath adopts double-deck sheath, not only increases cold resistance, also can increase the wearability, promotes cable life by a wide margin.
Advantageous effects
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
(1) the cable has reasonable structure.
(2) The stranded tin-plated copper conductor improves the conductivity of the conductor, makes the conductor more corrosion-resistant, and can reduce the generation of CuO and Cu by copper oxidation2O。
(3) The coating type low-smoke halogen-free flame-retardant belt can protect the conductor, further isolate the contact with oxygen and enhance the cold resistance.
(4) The low-smoke halogen-free flame-retardant insulating layer and the low-smoke halogen-free flame-retardant thermoplastic sheath enable the cable structure to be softer, the minimum bending radius can reach 6 times of the outer diameter of the cable, the cable is easier to bend, the cable is more convenient to bend and suitable for a bending laying environment, the cable has excellent wear-resisting performance, and the cable is suitable for moving laying of various occasions.
(5) The shielding and inhibiting method has good anti-interference performance, and the shielding and inhibiting coefficient is not more than 0.05.
Drawings
Fig. 1 is a schematic view of a radial cross-sectional structure of the cable of this example.
In the figure: the cable comprises a conductor 1, a gluing type low-smoke halogen-free flame-retardant tape winding layer 2, an insulating layer 3, a polyester tape winding layer 4, a glass fiber cloth tape winding layer 5, a shielding layer 6, an inner sheath 7, an outer sheath 8 and a filling layer 9.
Detailed Description
As shown in fig. 1, the control cable for a low temperature resistant nuclear power station of the present embodiment has a structure of:
the conductor is sequentially provided with a gluing type low-smoke halogen-free flame-retardant tape winding cladding and an insulating layer from inside to outside to form a wire core;
the plurality of wire cores and the filling layer are stranded to form a cable core; the cable core is sequentially provided with a polyester tape winding layer, a low-smoke halogen-free flame-retardant tape winding layer, a shielding layer, an inner sheath and an outer sheath from inside to outside;
the number of the wire cores is 3, and the cabling pitch-diameter ratio of the cable core is not more than 20;
the cross-sectional area of the conductor is 1.5mm2～6mm2(ii) a The conductor is formed by stranding tin-plated copper monofilaments in multiple layers from inside to outside; the diameter range of the tin-plated copper monofilament is 0.32 mm-1.04 mm; the stranding pitch diameter ratio of the tinned copper monofilaments on the innermost layer of the conductor ranges from 16 to 25, and the stranding pitch diameter ratio of the tinned copper monofilaments on the outermost layer of the conductor ranges from 10 to 14; the stranding direction of the tinned copper monofilaments on the outermost layer is the left direction, and the stranding direction of the tinned copper monofilaments on the adjacent layer is opposite;
the gluing type low-smoke halogen-free flame-retardant belt is wound in the right direction, the width of the gluing type low-smoke halogen-free flame-retardant belt is 8-10 mm, and the covering rate of the wound covering is not less than 15%;
the insulating layer is made of polyolefin cold-resistant insulating material;
the width of the polyester tape wrapping layer is 15-40 mm, the wrapping and covering rate is not less than 25%, and the thickness of the polyester tape is 0.04 mm;
the width of the glass fiber cloth belt lapping layer is 15-40 mm, and the lapping and covering rate is not less than 25%;
the shielding layer is formed by weaving tinned copper wires, and the diameter range of single wires of the tinned copper wires is 0.12-0.30 mm;
the inner sheath is made of low-smoke halogen-free flame retardant material, the trademark is 495-2, and the thickness range of the inner sheath is 1.0 mm-1.2 mm.
The outer sheath is made of a cold-resistant sheath material (low-temperature-resistant polyolefin sheath material), the mark is HW469, and the thickness range of the outer sheath is 1.8-2.2 mm.
In the example, the nominal thickness of the gluing type low-smoke halogen-free flame-retardant belt is 0.1mm, the nominal thickness of the insulating layer is 0.7mm, the filling layer is composed of a plurality of dust-free rock wool ropes, the diameter of each dust-free rock wool rope is 1.8-2.5 mm, and the nominal thickness of the glass fiber cloth belt is 0.2 mm.
After the scheme is adopted, the cold resistance of the control cable is greatly improved, the service life of the cable reaches more than 60 years, the bending performance is good, the irradiation resistance is good, the processing performance is good, and the production efficiency can be effectively improved. And simultaneously meets the basic requirements of electrical and mechanical properties.
The control cable of this example has been subjected to the following tests, the test result being a pass.
The cable has excellent softness, the bending radius is not less than 6D (D is the diameter of the cable), and the mechanical properties of the insulation and the sheath meet the relevant requirements of tables 15 and 18 in GB/T12706.
The anti-interference performance is good, and the shielding inhibition coefficient is not more than 0.05.
The cable has excellent electrical performance, 3.5kV alternating current voltage is applied between the core and the shielding, 2.5kV alternating current voltage is applied between the core and the shielding, the test lasts for 5min, and the cable is not broken down.
The cable has good flame retardant property, and the carbonization height of the cable is not more than 1.5m according to GB/T18380 flame retardant B type bundled combustion test.
The cable has excellent acid resistance, alkali resistance and corrosion resistance, and the finished cable passes anaerobic bacterial corrosion tests specified in GB/T2951.25.
Claims (5)
1. A control cable for a low-temperature-resistant nuclear power station is characterized in that the outer diameter range of the cable is 9.0-30.0 mm; the structure of the cable is as follows:
the conductor is sequentially provided with a gluing type low-smoke halogen-free flame-retardant tape winding cladding and an insulating layer from inside to outside to form a wire core;
the plurality of wire cores and the filling layer are stranded to form a cable core; the cable core is sequentially provided with a polyester tape winding layer, a low-smoke halogen-free flame-retardant tape winding layer, a shielding layer, an inner sheath and an outer sheath from inside to outside;
the number of the wire cores is 2-37, and the cabling pitch-diameter ratio of the cable core is not more than 20;
the cross-sectional area of the conductor is 1.5mm2～6mm2(ii) a The conductor is formed by stranding tin-plated copper monofilaments in multiple layers from inside to outside; the diameter range of the tin-plated copper monofilament is 0.32 mm-1.04 mm; the stranding pitch diameter ratio of the tinned copper monofilaments on the innermost layer of the conductor ranges from 16 to 25, and the stranding pitch diameter ratio of the tinned copper monofilaments on the outermost layer of the conductor ranges from 10 to 14; the stranding direction of the tinned copper monofilaments on the outermost layer is the left direction, and the stranding direction of the tinned copper monofilaments on the adjacent layer is opposite;
the gluing type low-smoke halogen-free flame-retardant belt is wound in the right direction, the width of the gluing type low-smoke halogen-free flame-retardant belt is 8-10 mm, and the covering rate of the wound covering is not less than 15%;
the insulating layer is made of polyolefin cold-resistant insulating material;
the width of the polyester tape wrapping layer is 15-40 mm, the wrapping and covering rate is not less than 25%, and the thickness of the polyester tape is 0.03-0.06 mm;
the width of the low-smoke halogen-free flame-retardant winding belt of the low-smoke halogen-free flame-retardant belt winding layer is 15-40 mm, and the winding covering rate is not less than 25%;
the shielding layer is formed by weaving tinned copper wires, and the diameter range of single wires of the tinned copper wires is 0.12-0.30 mm;
the inner sheath is made of low-smoke halogen-free flame retardant material, and the thickness range of the inner sheath is 1.0 mm-1.2 mm;
the outer sheath is made of cold-resistant sheath materials, and the thickness range of the outer sheath is 1.8-2.2 mm.
2. The control cable for a low temperature resistant nuclear power station as claimed in claim 1, wherein the nominal thickness of the rubberized low smoke zero halogen flame retardant tape is 0.1 mm.
3. The control cable for a low temperature resistant nuclear power plant as claimed in claim 1, wherein the insulating layer has a nominal thickness of 0.7mm and a thinnest point thickness of not less than 90-0.1 mm of the nominal value.
4. The control cable for the low temperature resistant nuclear power station as claimed in claim 1, wherein the filling layer is composed of a plurality of dust-free rock wool ropes, and the diameter of each dust-free rock wool rope is 1.8-2.5 mm.
5. The control cable for a low temperature resistant nuclear power plant as claimed in claim 1, wherein the polyester tape has a thickness of 0.04 mm; the low-smoke halogen-free flame-retardant belt is a glass fiber cloth belt, and the nominal thickness of the low-smoke halogen-free flame-retardant belt is 0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021531746.2U CN212782825U (en) | 2020-07-29 | 2020-07-29 | Low temperature resistant control cable for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021531746.2U CN212782825U (en) | 2020-07-29 | 2020-07-29 | Low temperature resistant control cable for nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN212782825U true CN212782825U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021531746.2U Active CN212782825U (en) | 2020-07-29 | 2020-07-29 | Low temperature resistant control cable for nuclear power station |
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| CN (1) | CN212782825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612780A (en) * | 2023-11-10 | 2024-02-27 | 广东腾跃通电缆有限公司 | Rare earth zinc alloy cold-resistant cable and preparation method thereof |
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2020
- 2020-07-29 CN CN202021531746.2U patent/CN212782825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612780A (en) * | 2023-11-10 | 2024-02-27 | 广东腾跃通电缆有限公司 | Rare earth zinc alloy cold-resistant cable and preparation method thereof |
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