CN210403321U - Low-voltage power cable for third-generation nuclear power station - Google Patents
Low-voltage power cable for third-generation nuclear power station Download PDFInfo
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- CN210403321U CN210403321U CN201921541076.XU CN201921541076U CN210403321U CN 210403321 U CN210403321 U CN 210403321U CN 201921541076 U CN201921541076 U CN 201921541076U CN 210403321 U CN210403321 U CN 210403321U
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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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Abstract
The utility model relates to a power cable technical field just discloses a third generation is low pressure power cable for nuclear power station, including first cable and the second cable that the structure is the same first cable includes many insulation core, insulation core's outside cladding has insulating protective layer of methyl ethylene silicon rubber and silane crosslinked polyethylene insulating protective layer, insulating protective layer of methyl ethylene silicon rubber and silane crosslinked polyethylene insulating protective layer set up outside insulation core from inside to outside in proper order, many insulation core has anti ultraviolet protective layer, waterproof layer, protection stratum reticulare and outer protective layer outward in proper order the cladding. The utility model discloses make cable bulk strength performance high for the cable is more durable.
Description
Technical Field
The utility model relates to a power cable technical field especially relates to a low pressure power cable for third generation nuclear power station.
Background
Aiming at the AP1000 technology, a power cable matched with a third-generation nuclear power station is required to have the service life of more than 60 years, and has the performances of cracking resistance, low smoke, zero halogen, flame retardance, nuclear radiation resistance, long-term thermal aging resistance, DBA (design benchmark accident) resistance, long-term DBA immersion resistance and high insulation.
The third generation nuclear power station low voltage power cable on the market at present mainly applies to outside the containment, and there is the cable in the shell to research and develop, but present low voltage power cable's intensity is lower, receives the bending and draws the damage easily, and does not possess anti ultraviolet function, and the cable that uses in the open air receives strong ultraviolet destruction easily and influences the life of cable, and two cable junction do not have better mechanical protection mechanism, and the junction is comparatively fragile receives destruction easily and influences cable life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the low voltage power cable among the prior art intensity lower, receive the bending easily and break, and do not possess the ultraviolet protection function, the cable that uses in the open air receives strong ultraviolet destruction easily and influences the life of cable, and two cable junction do not have better mechanical protection mechanism, and the junction comparatively fragile receives the problem that destroys influence cable life easily, and the low voltage power cable for the third generation nuclear power station that provides.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a low-voltage power cable for a third-generation nuclear power station comprises a first cable and a second cable which are identical in structure, wherein the first cable comprises a plurality of insulating wire cores, a methyl ethylene silicon rubber insulating protective layer and a silane crosslinked polyethylene insulating protective layer are coated on the outer sides of the insulating wire cores, the methyl ethylene silicon rubber insulating protective layer and the silane crosslinked polyethylene insulating protective layer are sequentially arranged outside the insulating wire cores from inside to outside, and an ultraviolet-proof protective layer, a waterproof layer, a protective net layer and an outer protective layer are sequentially coated outside the insulating wire cores;
two cardboards of the even symmetrical fixedly connected with of outer wall of first cable, two rotate through the pivot between the cardboard and be connected with same connecting plate, the one end that the cardboard was kept away from to the connecting plate is seted up the same extension board of groove and recess tank bottom through a plurality of pullback spring fixedly connected with, the one end fixedly connected with fixed plate of connecting plate is kept away from to the extension board, two limiting plates of a side symmetry fixedly connected with that the fixed plate is close to the connecting plate, the outer wall fixedly connected with of second cable corresponds the spacing ring of pegging graft with the limiting plate.
Preferably, the ultraviolet-proof protective layer is formed by extruding polyethylene raw materials with ultraviolet-proof additives.
Preferably, the waterproof layer is a polyethylene waterproof layer.
Preferably, the surface of the protective net layer is coated with a layer of anticorrosive and antirust paint.
Preferably, the outer protective layer is a lead sheath protective layer.
Compared with the prior art, the utility model provides a low pressure power cable for third generation nuclear power station possesses following beneficial effect:
1. this low pressure power cable for third generation nuclear power station, methyl ethylene silicon rubber insulating protective layer and silane crosslinked polyethylene insulating protective layer through being equipped with have effectual insulation protection function to the core, methyl ethylene silicon rubber operating temperature scope is wide, better bending property and low temperature performance have, tear resistance, tensile strength is poor, the ultraviolet protection layer that the rethread was equipped with makes the cable have outstanding ultraviolet protection function, can avoid outdoor cable to receive the problem that ultraviolet irradiation influences its life easily, the waterproof layer makes the cable have outstanding waterproof performance, the life of cable has been guaranteed, the protection stratum reticulare makes the cable have outstanding bending resistance and draws the performance, outer protective layer has better protection to the cable is whole, make cable bulk strength performance high, make the cable more durable.
2. This low pressure power cable for third generation nuclear power station, through the connecting plate that is equipped with, after two cables of initial connection, upset connecting plate and pulling fixed plate make the outer pulling of extension board case recess for the limiting plate aims at the spacing ring, loosen the fixed plate, utilize pull-back spring's pull-back power to make the limiting plate card go into in the spacing ring and can realize the spacing locking to the connecting plate, make the intensity structure that has mechanical connection between two cables, make the connection between two cables more firm.
And the part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses make cable bulk strength performance high for the cable is more durable.
Drawings
Fig. 1 is a schematic structural diagram of a low-voltage power cable for a third-generation nuclear power station according to the present invention;
fig. 2 is the utility model provides a third generation is first cable and second cable junction's for nuclear power station low pressure power cable's for station structural schematic.
In the figure: the cable comprises a first cable 1, a second cable 2, an insulating wire core 3, a methyl vinyl silicone rubber insulating protective layer 4, a silane crosslinked polyethylene insulating protective layer 5, an ultraviolet-proof protective layer 6, a waterproof layer 7, a protective net layer 8, an outer protective layer 9, a clamping plate 10, a connecting plate 11, a groove 12, a pullback spring 13, an extension plate 14, a fixing plate 15, a limiting plate 16 and a limiting ring 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-2, a low-voltage power cable for a third-generation nuclear power station comprises a first cable 1 and a second cable 2 which are identical in structure, wherein the first cable 1 comprises a plurality of insulated wire cores 3, the outer sides of the insulated wire cores 3 are wrapped with a methyl ethylene silicone rubber insulating protective layer 4 and a silane crosslinked polyethylene insulating protective layer 5, the methyl ethylene silicone rubber insulating protective layer 4 and the silane crosslinked polyethylene insulating protective layer 5 are sequentially arranged outside the insulated wire cores 3 from inside to outside, and the plurality of insulated wire cores 3 are sequentially wrapped with an ultraviolet-proof protective layer 6, a waterproof layer 7, a protective net layer 8 and an outer protective layer 9;
two cardboard 10 of the even symmetry fixedly connected with of outer wall of first cable 1, be connected with same connecting plate 11 through the pivot rotation between two cardboard 10, connecting plate 11 keeps away from the one end of cardboard 10 and sets up the same extension board 14 of the tank bottom of recess 12 through a plurality of pullback springs 13 fixedly connected with, the one end fixedly connected with fixed plate 15 of connecting plate 11 is kept away from to extension board 14, two limiting plates 16 of one side symmetry fixedly connected with that fixed plate 15 is close to connecting plate 11, the outer wall fixedly connected with of second cable 2 corresponds the spacing ring 17 of pegging graft with limiting plate 16.
The ultraviolet-proof protective layer 6 is formed by extruding polyethylene raw materials with ultraviolet-proof additives.
The waterproof layer 7 is specifically a polyethylene waterproof layer.
The surface of the protective net layer 8 is coated with a layer of anticorrosive and antirust paint.
The outer protective layer 9 is specifically a lead sheath protective layer.
In the utility model, when in use, the insulating protective layer 4 of the methyl vinyl silicone rubber and the insulating protective layer 5 of the silane cross-linked polyethylene have effective insulating protective function to the wire core, the working temperature range of the methyl vinyl silicone rubber is wide, the insulating protective layer has better bending property and low-temperature property, tear resistance and poor tensile strength, then the ultraviolet-proof protective layer 6 is arranged to ensure that the cable has excellent ultraviolet-proof function, the problem that the service life of the outdoor cable is easily influenced by ultraviolet irradiation can be avoided, the waterproof layer 7 ensures that the cable has excellent waterproof property, the service life of the cable is ensured, the protective net layer 8 ensures that the cable has excellent bending and pulling resistance, the outer protective layer 9 has better protection to the whole cable, the overall strength property of the cable is high, the cable is more durable, after the two cables are preliminarily connected through the connecting plate 11, upset connecting plate 11 and pulling fixed plate 15 make 14 case recesses 12 of extension board stimulate outward for limiting plate 16 aims at spacing ring 17, loosens fixed plate 15, utilizes the pull-back power of pullback spring 13 to make limiting plate 16 block in can realizing the spacing locking to connecting plate 11 in the spacing ring 17, makes to have mechanical connection's intensity structure between two cables, makes the connection between two cables more firm.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A low-voltage power cable for a third-generation nuclear power station comprises a first cable (1) and a second cable (2) which are identical in structure, and is characterized in that the first cable (1) comprises a plurality of insulating wire cores (3), a methyl ethylene silicon rubber insulating protective layer (4) and a silane crosslinked polyethylene insulating protective layer (5) are coated on the outer sides of the insulating wire cores (3), the methyl ethylene silicon rubber insulating protective layer (4) and the silane crosslinked polyethylene insulating protective layer (5) are sequentially arranged outside the insulating wire cores (3) from inside to outside, and an ultraviolet-proof protective layer (6), a waterproof layer (7), a protective net layer (8) and an outer protective layer (9) are sequentially coated outside the insulating wire cores (3);
two cardboard (10) of the even symmetry fixedly connected with of outer wall of first cable (1), two rotate through the pivot between cardboard (10) and be connected with same connecting plate (11), the tank bottom of keeping away from cardboard (10) in connecting plate (11) is seted up fluted (12) and recess (12) is through the same extension board (14) of a plurality of pullback spring (13) fixedly connected with, the one end fixedly connected with fixed plate (15) of connecting plate (11) are kept away from in extension board (14), two limiting plates (16) of one side symmetry fixedly connected with that fixed plate (15) are close to connecting plate (11), the outer wall fixedly connected with of second cable (2) corresponds spacing ring (17) of pegging graft with limiting plate (16).
2. The low-voltage power cable for the third-generation nuclear power station as claimed in claim 1, wherein the ultraviolet-proof protective layer (6) is formed by extruding polyethylene raw materials with ultraviolet-proof additives.
3. The low-voltage power cable for the third-generation nuclear power station according to claim 1, wherein the waterproof layer (7) is a polyethylene waterproof layer.
4. The low-voltage power cable for the third-generation nuclear power station as claimed in claim 1, wherein the surface of the protective mesh layer (8) is coated with a layer of anticorrosive and antirust paint.
5. A low voltage power cable for third generation nuclear power plants according to claim 1, characterized in that said outer protective layer (9) is in particular a lead sheath protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541076.XU CN210403321U (en) | 2019-09-17 | 2019-09-17 | Low-voltage power cable for third-generation nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541076.XU CN210403321U (en) | 2019-09-17 | 2019-09-17 | Low-voltage power cable for third-generation nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210403321U true CN210403321U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921541076.XU Active CN210403321U (en) | 2019-09-17 | 2019-09-17 | Low-voltage power cable for third-generation nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210403321U (en) |
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2019
- 2019-09-17 CN CN201921541076.XU patent/CN210403321U/en active Active
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