CN221304307U - Fireproof cable for nuclear power station - Google Patents
Fireproof cable for nuclear power station Download PDFInfo
- Publication number
- CN221304307U CN221304307U CN202322963550.0U CN202322963550U CN221304307U CN 221304307 U CN221304307 U CN 221304307U CN 202322963550 U CN202322963550 U CN 202322963550U CN 221304307 U CN221304307 U CN 221304307U
- Authority
- CN
- China
- Prior art keywords
- cable
- fire
- layer
- wrapped
- insulating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 7
- 238000009954 braiding Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000010440 gypsum Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 33
- 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 description 7
- 239000003063 flame retardant Substances 0.000 description 7
- 239000010445 mica Substances 0.000 description 7
- 229910052618 mica group Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000011241 protective layer Substances 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model relates to a fire-resistant cable for a nuclear power station, which belongs to the field of wires and cables and comprises a cable core and an outer protection structure wrapped on the outer surface of the cable core, wherein fire-resistant filler is filled between the outer protection structure and the cable core, the cable core comprises a conductor, a fire-resistant layer, an insulating layer and a first insulating layer, the fire-resistant layer is wrapped on the outer surface of the conductor, the insulating layer is wrapped on the fire-resistant layer, and the first insulating layer is wrapped on the insulating layer; the utility model effectively solves the problem of stability of the cable of the existing nuclear power station at high temperature, so that the cable has radiation resistance and can normally operate for a long time at high temperature and high radiation; the cable structure design has better fire resistance, and can keep the integrity of a cable line under the conditions of flame combustion, continuous vibration and water spraying.
Description
Technical field:
The utility model relates to the field of wires and cables, in particular to a fire-resistant cable for a nuclear power station.
The background technology is as follows:
Cables have been used as power carriers in various fields of human life and production. The cable for the nuclear power station has the characteristics of low smoke, no halogen, flame retardance, fire resistance, high temperature resistance, radiation resistance and the like, and not only has the power transmission characteristic of the common cable due to the special application environment. The international nuclear safety standard is further improved, prevention and alleviation of serious accidents must be considered in design, fireproof requirements are further improved, the fireproof and heat-insulating performance of cables used in the existing nuclear power station is poor, the cable skin can be melted at high temperature, and the problems that short circuits are easy to occur when internal circuits are exposed outside and the like are solved. Therefore, the utility model provides a fire-resistant cable for a nuclear power station, which aims to solve the defects and the shortcomings in the prior art.
The utility model comprises the following steps:
The utility model aims to overcome the defects of the prior art and provide a fire-resistant cable for a nuclear power station.
The utility model adopts the technical scheme that:
The utility model provides a fire-resistant cable for nuclear power station, includes cable core and parcel at the outer protective structure of cable core, outer protective structure with the packing is equipped with fire-resistant filler between the cable core, the cable core includes conductor, flame retardant coating, insulating layer and insulating layer one, conductor surface parcel is equipped with the flame retardant coating, the flame retardant coating parcel is equipped with the insulating layer outward, the insulating layer parcel is equipped with outward the insulating layer one.
Preferably, the outer protection structure comprises a protection layer, a metal braiding structure, a heat insulation layer II and an outer protection layer, wherein the protection layer is wrapped outside the refractory filler, the metal braiding structure is wrapped outside the protection layer, the heat insulation layer II is wrapped outside the metal braiding structure, and the outer protection layer is wrapped outside the heat insulation layer II.
Preferably, an anti-pulling rope is further arranged between the cable cores.
Preferably, the metal braiding structure comprises metal braiding nets and heat insulation gypsum powder filled between the metal braiding nets.
The beneficial effects of the utility model are as follows: the utility model effectively solves the problem of stability of the cable of the existing nuclear power station at high temperature, and the cable has radiation resistance through the arrangement of the outer protective structure, so that the cable can normally run for a long time at high temperature and high radiation; the cable structure design has better fire resistance, and can keep the integrity of a cable line under the conditions of flame combustion, continuous vibration and water spraying.
Description of the drawings:
fig. 1: the three-dimensional structure of the utility model is schematically shown.
Fig. 2: the cable core is structurally schematic.
Fig. 3: the metal braiding structure of the present utility model is shown in schematic structure.
The specific embodiment is as follows:
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
As shown in fig. 1-3, a fire-resistant cable for a nuclear power station comprises a cable core 001 and an outer protective structure 002 wrapped on the outer surface of the cable core 001, wherein a fire-resistant filler 003 is filled between the outer protective structure 002 and the cable core 001, the cable core 001 comprises a conductor 110, a fire-resistant layer 120, an insulating layer 130 and a first heat-insulating layer 140, the fire-resistant layer 120 is wrapped on the outer surface of the conductor 110, the insulating layer 130 is wrapped on the outer surface of the fire-resistant layer 120, and the first heat-insulating layer 140 is wrapped on the outer surface of the insulating layer 130.
The conductor 110 is made of annealed copper material, and adopts a first solid conductor or a second stranded conductor;
The fire-resistant layer 120 is a 3-layer laminated mica tape, the laminated mica tape is wrapped by adopting a continuous lapping cover, the lapping cover width is 0.2-0.4 mm, and the thickness of the laminated mica tape is 0.14mm, and the laminated mica has excellent high-temperature electric insulation performance, so that the mica can release crystal water at high temperature to reduce the ambient temperature, and the cable is ensured to be still good in electric insulation when being burnt;
The insulating layer 130 is ceramic silicon rubber, is extruded outside the refractory layer 120, has the thickness of 0.7-2.0 mm, has radiation resistance and high temperature resistance, and can adapt to the environment with high radiation; meanwhile, the cable has excellent fire resistance, a hard ceramic shell can be formed when the cable burns, the shell cannot be broken or broken when being subjected to mechanical impact and vibration, the shell can effectively isolate air from entering the cable, the inside of the cable is prevented from burning due to high temperature, meanwhile, the sealing performance of the shell can also prevent spray water from entering the inside of the cable, the integrity of a circuit of the cable is ensured when fire disaster is avoided, and the guarantee is provided for fire fighting and disaster relief; meanwhile, when external impact or vibration is applied, the internal mica tape can be effectively protected, the phenomenon that the mica tape is embrittled or crushed is avoided, and the electrical insulation between wire cores is ensured;
The fire-resistant filler 003 is an alkali-free glass fiber filling rope or a flame-retardant inorganic paper filling rope, is filled between each wire core, and does not cause the phenomenon of 'burning out' when the cable burns, so that the integrity of the cable in a fire disaster is ensured, and the phenomenon of collapsing is avoided;
The setting of this scheme further optimization: as shown in fig. 1-3, the outer protection structure 002 includes a protection layer 210, a metal braiding structure 220, a second heat insulation layer 230 and an outer protection layer 240, wherein the protection layer 210 is wrapped with a refractory filler 003, the protection layer 210 is wrapped with the metal braiding structure 220, the metal braiding structure 220 is wrapped with the second heat insulation layer 230, and the second heat insulation layer 230 is wrapped with the outer protection layer 240.
The protective layer 210 is a glass fiber belt, and is continuously covered and wrapped, the covering rate is 10% -15%, and the glass fiber belt is an excellent refractory material and can further prevent flame from spreading into the cable;
The outer protective layer 240 is a radiation-resistant low-smoke halogen-free flame-retardant polyolefin sheath material, the sheath material is extruded outside the protective layer 210 in an extrusion production mode, the extrusion thickness is 1.8 mm-2.5 mm, the oxygen index of the sheath material is not lower than 43%, the radiation-resistant low-smoke halogen-free flame-retardant polyolefin sheath material has the characteristics of higher flame retardant property, strong crusting capability at high temperature, low smoke yield and the like, a complete shell can be formed to be attached to a cable in case of fire, the spread of fire can be prevented, the impact of flame received inside the cable can be effectively reduced, meanwhile, the smoke yield is low in case of combustion, the nontoxic gas release has good environmental protection performance, and the personnel escape is convenient; the combination of the outer sheath 240 and the protective layer 210 can be further improved by adopting extrusion production, so that the outer sheath 240 and the protective layer 210 are as compact as possible, and when the sheath is burnt and carbonized, the carbonized shell is supported by virtue of the fire-resistant property of the glass fiber belt, so that the shell is prevented from being broken or dripping.
The setting of this scheme further optimization: as shown in fig. 1-3, an anti-pulling rope 004 is further arranged between each two cable cores 001, so that the overall tensile property of the cable is further enhanced.
The setting of this scheme further optimization: as shown in fig. 1-3, the metal braiding structure 220 includes metal braiding nets 221 and heat insulation gypsum powder 222 filled between the metal braiding nets 221, the metal braiding nets 221 ensure the integrity of the whole structure of the cable, deformation is avoided from affecting the inside, and the heat insulation gypsum powder 222 can effectively obtain heat insulation to transfer to the inside of the cable.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (4)
1. The utility model provides a fire-resistant cable for nuclear power station, includes cable core (001) and parcel at outer protective structure (002) of cable core (001) outward appearance, its characterized in that: the cable core (001) comprises a conductor (110), a fire-resistant layer (120), an insulating layer (130) and a first heat-insulating layer (140), wherein the fire-resistant layer (120) is wrapped on the outer surface of the conductor (110), the insulating layer (130) is wrapped on the outer surface of the fire-resistant layer (120), and the first heat-insulating layer (140) is wrapped on the outer surface of the insulating layer (130).
2. The fire resistant cable for nuclear power plant according to claim 1, wherein: the outer protection structure (002) comprises a protection layer (210), a metal braiding structure (220), a heat insulation layer II (230) and an outer protection layer (240), wherein the protection layer (210) is wrapped with refractory filler (003), the metal braiding structure (220) is wrapped with the protection layer (210), the heat insulation layer II (230) is wrapped with the metal braiding structure (220), and the outer protection layer (240) is wrapped with the heat insulation layer II (230).
3. The fire resistant cable for nuclear power plant according to claim 1, wherein: an anti-pulling rope (004) is further arranged between the cable cores (001).
4. The fire resistant cable for nuclear power plant according to claim 1, wherein: the metal braiding structure (220) comprises metal braiding nets (221) and heat insulation gypsum powder (222) filled between the metal braiding nets (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322963550.0U CN221304307U (en) | 2023-11-02 | 2023-11-02 | Fireproof cable for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322963550.0U CN221304307U (en) | 2023-11-02 | 2023-11-02 | Fireproof cable for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221304307U true CN221304307U (en) | 2024-07-09 |
Family
ID=91735244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322963550.0U Active CN221304307U (en) | 2023-11-02 | 2023-11-02 | Fireproof cable for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221304307U (en) |
-
2023
- 2023-11-02 CN CN202322963550.0U patent/CN221304307U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |