CN116013597A - Dampproofing fire-retardant insulating power cable - Google Patents
Dampproofing fire-retardant insulating power cable Download PDFInfo
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- CN116013597A CN116013597A CN202310035411.3A CN202310035411A CN116013597A CN 116013597 A CN116013597 A CN 116013597A CN 202310035411 A CN202310035411 A CN 202310035411A CN 116013597 A CN116013597 A CN 116013597A
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 42
- 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 24
- 239000004020 conductor Substances 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004698 Polyethylene Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- -1 polyethylene Polymers 0.000 claims abstract description 4
- 229920000573 polyethylene Polymers 0.000 claims abstract description 4
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 114
- 238000001514 detection method Methods 0.000 claims description 35
- 239000002274 desiccant Substances 0.000 claims description 29
- 238000005253 cladding Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 23
- 238000005192 partition Methods 0.000 claims description 20
- 238000003780 insertion Methods 0.000 claims description 18
- 230000037431 insertion Effects 0.000 claims description 18
- 239000003292 glue Substances 0.000 claims description 16
- 241001631457 Cannula Species 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
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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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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The application discloses dampproofing fire-retardant insulating power cable includes outer sheath, outer water-blocking around band layer, outer passageway layer, interior water-blocking around band layer, interior passageway layer, armor, outer fire-retardant layer, shielding layer and outer insulating layer in proper order from outside to inside, have a plurality of power cable cores in the outer insulating layer, power cable core includes interior fire-retardant layer, interior insulating layer and conductor in proper order from outside to inside. The power cable core has 3 or 6; the inner insulating layer is a polyethylene layer, the outer insulating layer is a silicon rubber insulating layer, and the inner flame-retardant layer and the outer flame-retardant layer are low-smoke halogen-free flame-retardant layers; the shielding layer is a copper wire braided shielding layer, the armor layer is a steel wire armor layer, and the conductor is a copper conductor. The cable has good insulation and moisture resistance.
Description
Technical Field
The application relates to the cable field, in particular to a moistureproof flame-retardant insulated power cable.
Background
The cable mainly comprises a cladding layer formed by covering conductors with conductor machines, and the main types of the cable are power cables, control cables, signal cables and the like, and the cladding structure of the cable is more and more complicated along with the complexity of the service scene of the cable and the higher and higher requirements on the performance of the service life, the service stability and the like of the cable. For example, power cables used in some equipment or on ships are often used in situations where moisture is heavy or in the field, in some cases, moisture is attached to the surface of the cable, and some moisture is corrosive, or a layer of frost is attached when the cable is cold, which easily causes aging, corrosion, even cracking, etc. of the outer protective layer for a long time, and the cable is easily damaged. In order to realize moisture resistance, a water-blocking adhesive layer or a water-blocking wrapping layer is generally added to a common cable, so that after the surface of the cable is kept broken, water vapor cannot erode an inner cable core as much as possible, and thus moisture resistance is improved. On the other hand, when the power cable is used, particularly when high-power transmission is carried out, the internal heat is serious, and the conventional cable can only naturally dissipate heat, so that the heat dissipation effect is poor. However, if the heat generated during the power transmission inside the cable is utilized and the moisture on the surface of the cable is dried, so that the surface of the cable remains dry most of the time, the durability of the cable is greatly increased.
Disclosure of Invention
The invention aims to: in order to overcome the problems mentioned in the prior art, the present application provides a moisture-proof flame-retardant insulated power cable.
The technical scheme is as follows: the utility model provides a dampproofing fire-retardant insulating power cable, includes outer sheath, outer water-blocking around band layer, outer passageway layer, interior water-blocking around band layer, interior passageway layer, armor, outer fire-retardant layer, shielding layer and outer insulating layer in proper order from outside to interior, have a plurality of power cable cores in the outer insulating layer, power cable core includes interior fire-retardant layer, interior insulating layer and conductor in proper order from outside to interior.
Further, the power cable core has 3 or 6.
The number of cable cores may be increased or decreased as desired.
Further, the inner insulating layer is a polyethylene layer, the outer insulating layer is a silicon rubber insulating layer, and the inner flame-retardant layer and the outer flame-retardant layer are both low-smoke halogen-free flame-retardant layers.
Further, the shielding layer is a copper wire braided shielding layer, the armor layer is a steel wire armor layer, and the conductor is a copper conductor.
Further, the outer channel layer comprises an outer channel cladding and a plurality of outer channel bulges which are connected with the outer channel cladding and distributed in an annular equidistant manner, the inner channel layer comprises an inner channel cladding and a plurality of inner channel bulges which are connected with the inner channel cladding and distributed in an annular equidistant manner, and each inner channel bulge is internally provided with a heating cable core.
The number of the inner channel bulges and the outer channel bulges can be selected as required, and the inner channel layer and the outer channel layer are formed in an extrusion molding mode.
Further, the outer channel projection, the inner channel projection and the heating cable core all extend along the length direction of the cable.
Further, an outer channel is formed between two adjacent outer channel protrusions, and an inner channel is formed between two adjacent inner channel protrusions.
In some embodiments, all inner channels and all outer channels are filled with water-blocking glue.
In other embodiments, there is no water blocking glue in all inner channels and all outer channels, such that the absence of inner channels and outer channels facilitates circulation of the circulating air stream.
Further, the heating cable core sequentially comprises a heating cable core cladding and a heating cable core conductor from outside to inside.
Thereby protecting the heating cable core.
Further, the cable is provided with a plurality of circulating installation positions, and each circulating installation position is provided with a circulating device and a protective tube device for wrapping the circulating device; the outer protective layer, the outer water-blocking wrapping tape layer, the outer channel layer and the inner water-blocking wrapping tape layer at the installation position are removed, and at least one part of the inner channel cladding of the inner channel layer at the installation position is removed; the circulating device comprises two circulating units which are spliced together, wherein each circulating unit comprises two air flow generating units and a detecting unit positioned between the two air flow generating units, each air flow generating unit comprises a first end plate, an inner arc panel connected with the first end plate, an outer arc panel connected with the first end plate, a partition plate connected with the first end plate and positioned between the inner arc panel and the outer arc panel, a plurality of inner insertion pipes connected with the first end plate and a plurality of outer insertion pipes connected with the first end plate, a mounting block is fixed at the partition plate, a fan unit is mounted at the mounting block, the inner insertion pipes are positioned between the inner arc panel and the partition plate, each inner insertion pipe is inserted into one inner channel, each outer insertion pipe is positioned between the outer arc panel and the partition plate, and each outer insertion pipe is inserted into one outer channel; the detection unit comprises an inner enclosing plate, an outer enclosing plate and two second end plates connected between the inner enclosing plate and the outer enclosing plate, wherein each second end plate faces one first end plate of the airflow generation unit, the detection unit is provided with a mounting groove, the mounting groove is provided with a socket and two communication ports, the socket is positioned at the outer enclosing plate, the two communication ports are respectively positioned at the two second end plates, a drying agent box is arranged in the mounting groove, the drying agent box is divided into two accommodating cavities by a drying partition plate, the accommodating cavities are filled with drying agents, each accommodating cavity is provided with one end baffle and one material taking hole, and the end baffle faces the communication port and is provided with air holes; the protective tube device comprises two tube units which are spliced and fixed together.
Further, the plurality of cyclic mounting sites are equally spaced.
Further, each of the sockets is a communication port that communicates with a space between the outer arc panel and the partition plate of the corresponding air flow generating unit.
Further, the first end plate has a first gasket thereon and the second end plate has a second gasket thereon; the corresponding first end plate and the second end plate are fixed through bolts; and a counter bore is formed in the outer surrounding plate of the detection unit.
Thereby facilitating the fixation of the air flow generating unit and the detecting unit. And facilitates sealing of the circulation device at the installation site.
Further, the two detection units of each circulation device are fixed through bolts and nuts.
Further, the drying agent box comprises an inner side plate with an arc surface shape, an outer side plate with an arc surface shape and two plane side plates which are parallel to each other, a drying partition plate and two end baffle plates of the drying agent box are parallel, a counter bore is formed in the drying agent box, a fixing bolt is arranged in the counter bore, and a threaded pipe which is matched with the fixing bolt and is locked and fixed is arranged in an inner surrounding plate of the detection unit; each mounting groove has 4 slots therein for insertion by the edges of the planar side plates.
Thereby making the insertion and installation of the drying agent box more convenient and easier to position.
Further, there are 2 fan units, 4 inner cannulas and 4 outer cannulas at each airflow generating unit; each detection unit has one of the mounting grooves and one of the desiccant cartridges.
Further, the inner enclosing plate, the outer enclosing plate, the inner arc panel and the outer arc panel are semi-cylindrical plates.
Further, the inner diameter of the inner arc panel is equal to the inner diameter of the inner surrounding plate; the outer diameter of the outer arc panel, the outer diameter of the outer surrounding plate and the outer diameter of the outer side plate are equal.
Further, the installation position is also provided with a heat shrinkage pipe surrounding the circulating device.
Thereby the pyrocondensation pipe parcel circulating device provides better fixed and sealed effect.
Further, the pipe unit comprises a semicircular cylindrical middle pipe, two end pipes connected with the middle pipe and two side flanges, wherein the side flanges are connected with the middle pipe and the two end pipes, the side flanges are provided with bolt mounting holes, and sealing gaskets are arranged on the inner sides of the end pipes.
Further, the middle pipe is also provided with a detection port and a glue injection hole, and the detection port is provided with a detection port cover fixedly connected with the middle pipe through a bolt.
The detection flap may be opened for sampling the desiccant. The glue injection holes can be filled with water-blocking glue or sealant, and the glue injection holes can also lead out wires of the fan unit.
The beneficial effects are that: the cable of this application is through setting up the mode that double-deck water-blocking is around the covering inside the cable and is formed inside, outer passageway to the convenience carries out the circulation heat dissipation to the inside heat that produces of cable, thereby obtains better radiating effect.
On the other hand, the cable of this application utilizes the heat of the inside heat dissipation of cable to heat the cable surface from the inboard to make steam, the frosting on surface can be got rid of rapidly, thereby keep the dryness on cable surface, thereby make the cable have better dampproofing effect.
Drawings
FIG. 1 is a schematic diagram of a cable of example 1;
FIG. 2 is an exploded view of the cable assembly of example 2;
FIG. 3 is an enlarged view of area A of example 2;
FIG. 4 is an enlarged view of the A1 region of example 2;
FIG. 5 is an enlarged view of the A2 region of example 2;
FIG. 6 is a schematic illustration of the exposed part of the cyclic installation site of embodiment 2;
FIG. 7 is a schematic view showing the installation of two air flow generating units at the circulation installation site of embodiment 2;
FIG. 8 is a schematic view of a circulation device installed at the circulation installation site of embodiment 2;
FIG. 9 is a schematic view of the circulation mount location of example 2 with a desiccant cartridge installed;
FIG. 10 is a schematic view of a heat shrink tubing installed at the circulation installation site of example 2;
FIG. 11 is a schematic view of a device with a protective tube installed at the circulation installation site of embodiment 2;
FIG. 12 is an exploded first perspective view of the detection unit, the airflow generation unit, and the kit of example 2;
fig. 13 is an exploded second perspective view schematically showing the detection unit, the airflow generation unit, and the kit of example 2.
Detailed Description
Reference numerals: 1.1 conductors; 1.2 an inner insulating layer; 1.3 an inner flame retardant layer; 1.4 an outer insulating layer; 1.5 shielding layer; 1.6 an outer flame retardant layer; 1.7 armor layers; 1.8 inner channel layers; 1.8.1 inner channel cladding; 1.8.2 inner channel projections; 1.8.3 heating cable core; water-blocking glue at the channel in 1.8.4; 1.9, water-blocking wrapping tape layers; 1.10 outer channel layers; 1.10.1 outer channel cladding; 1.10.2 outer channel projections; 1.10.3 water-blocking glue at the outer channel; 1.11 an external water-blocking wrapping tape layer; 1.12; an outer protective layer;
2 a detection unit; 2.1, enclosing the board in the interior; 2.1.1 threaded pipe; 2.2, surrounding the coaming; 2.2.1 mounting grooves; 2.2.2 slots; 2.3 second end plate; 2.3.1 communication ports; 2.4 a second gasket; 2.5 a counter bore is formed in the outer surrounding plate;
3 an air flow generating unit; 3.1 inner arc panels; 3.2 dividing plates; 3.2.1 mounting blocks; 3.2.2 fan units; 3.3 outer arc panels; 3.4 first end plate; 3.5 a first gasket; 3.6 inner cannula; 3.7 outer cannula;
4 a desiccant cartridge; 4.1 outer side plates; 4.2 plane side plates; 4.3 fixing bolts; 4.4 end baffles; 4.5 material taking holes; 4.6 countersinks at the desiccant cartridges; 4.7 inner side plates;
5, heat shrinking pipe;
6 pipe units; 6.1 intermediate tube; 6.2 end pipes; 6.3 side flanges; 6.4 sealing gaskets at the end pipes; 6.5 detecting port; 6.6, detecting a flap; and 6.7, injecting glue holes.
Example 1
As shown in fig. 1: the utility model provides a dampproofing fire-retardant insulating power cable, includes outer sheath 1.12, outer water-blocking around band layer 1.11, outer passageway layer 1.10, interior water-blocking around band layer 1.9, interior passageway layer 1.8, armor 1.7, outer fire-retardant layer 1.6, shielding layer 1.5 and outer insulating layer 1.4 in proper order from outside to inside, have a plurality of power cable cores in the outer insulating layer 1.4, power cable core includes interior fire-retardant layer 1.3, interior insulating layer 1.2 and conductor 1.1 in proper order from outside to inside. The number of the power cable cores is 6; the inner insulating layer 1.2 is a polyethylene layer, the outer insulating layer 1.4 is a silicon rubber insulating layer, and the inner insulating layer 1.3 and the outer flame retardant layer 1.6 are low-smoke halogen-free flame retardant layers; the shielding layer 1.5 is a copper wire braided shielding layer, the armor layer 1.7 is a steel wire armor layer, and the conductor 1.1 is a copper conductor; the outer channel layer 1.10 comprises an outer channel cladding 1.10.1 and a plurality of outer channel protrusions 1.10.2 connected with the outer channel cladding 1.10.1 and distributed in an annular equidistant manner, the inner channel layer 1.8 comprises an inner channel cladding 1.8.1 and a plurality of inner channel protrusions 1.8.2 connected with the inner channel cladding 1.8.1 and distributed in an annular equidistant manner, and each inner channel protrusion 1.8.2 is provided with a heating cable core 1.8.3; the outer channel projection 1.10.2, the inner channel projection 1.8.2 and the heating cable core 1.8.3 all extend along the length direction of the cable; an outer channel is formed between two adjacent outer channel projections 1.10.2, and an inner channel is formed between two adjacent inner channel projections 1.8.2. The heating cable core 1.8.3 comprises a heating cable core cladding and a heating cable core conductor from outside to inside in sequence; all inner channels and all outer channels are filled with water-blocking glue.
As shown in the figure, the cable of the application wraps a plurality of power cable cores therein, and the number of the power cable cores can be selected according to the requirement, so that the cable has stronger power transmission capability. The cable cores are provided with the flame-retardant layers and the insulating layers, the plurality of power cable cores are wrapped with the whole flame-retardant layers and the insulating layers, so that the cable cores have a good flame-retardant and insulating effect, the cable cores are wrapped with two layers of water-blocking wrapping layers, and the inner channels and the outer channels are filled with water-blocking glue. Thereby having good water blocking effect. The heating cable core can be heated to remove water and defrost as required.
Example 2
Example 2 was further modified on the basis of example 1 to eliminate the water blocking glue in the inner and outer channels. And a circulation unit is added, specifically, the cable of the circulation unit has the structure as in the embodiment 1, after the cable of the embodiment 1 is processed, the cable is cut by a machining mode, the installation position is cut, as shown in the figure, a part of the inner channel cladding is cut off, and the exposed part is cylindrical, so that the circulation device is easy to install, specifically: the utility model provides a dampproofing fire-retardant insulating power cable, includes outer sheath 1.12, outer water-blocking around band layer 1.11, outer passageway layer 1.10, interior water-blocking around band layer 1.9, interior passageway layer 1.8, armor 1.7, outer fire-retardant layer 1.6, shielding layer 1.5 and outer insulating layer 1.4 in proper order from outside to inside, have a plurality of power cable cores in the outer insulating layer 1.4, power cable core includes interior fire-retardant layer 1.3, interior insulating layer 1.2 and conductor 1.1 in proper order from outside to inside. The outer channel layer 1.10 comprises an outer channel cladding 1.10.1 and a plurality of outer channel protrusions 1.10.2 connected with the outer channel cladding 1.10.1 and distributed in an annular equidistant manner, the inner channel layer 1.8 comprises an inner channel cladding 1.8.1 and a plurality of inner channel protrusions 1.8.2 connected with the inner channel cladding 1.8.1 and distributed in an annular equidistant manner, and each inner channel protrusion 1.8.2 is provided with a heating cable core 1.8.3; the outer channel projection 1.10.2, the inner channel projection 1.8.2 and the heating cable core 1.8.3 all extend along the length direction of the cable; an outer channel is formed between two adjacent outer channel projections 1.10.2, and an inner channel is formed between two adjacent inner channel projections 1.8.2.
The cable is provided with a plurality of circulating installation positions, and each circulating installation position is provided with a circulating device and a protective tube device for wrapping the circulating device; the outer protective layer 1.12, the outer water-blocking wrapping tape layer 1.11, the outer channel layer 1.10 and the inner water-blocking wrapping tape layer 1.9 at the installation site are removed, and at least a part of the inner channel cladding 1.8.1 of the inner channel layer 1.8 at the installation site is removed; the circulating device comprises two circulating units spliced together, the circulating units comprise two air flow generating units 3 and a detecting unit 2 positioned between the two air flow generating units 3, the air flow generating units 3 comprise a first end plate 3.4, an inner arc panel 3.1 connected with the first end plate 3.4, an outer arc panel 3.3 connected with the first end plate 3.4, a partition plate 3.2 connected with the first end plate 3.4 and positioned between the inner arc panel 3.1 and the outer arc panel 3.3, a plurality of inner cannulas 3.6 connected with the first end plate 3.4 and a plurality of outer cannulas 3.7 connected with the first end plate 3.4, a mounting block 3.2.1 is fixed at the partition plate 3.2, a fan unit 3.2.2 is mounted at the mounting block 3.2.1, the inner cannulas 3.6 are positioned between the inner arc panel 3.1 and the partition plate 3.2, and each inner cannulas 3.6 are inserted into one inner channel, and a plurality of outer cannulas 3.7 are positioned between the inner cannulas 3.3.3 and each outer arc 3.3.4; the detection unit comprises an inner enclosing plate 2.1, an outer enclosing plate 2.2 and two second end plates 2.3 connected between the inner enclosing plate 2.1 and the outer enclosing plate 2.2, wherein each second end plate 2.3 faces one first end plate 3.4 of the airflow generation unit 3, the detection unit 2 is provided with a mounting groove 2.2.1, the mounting groove 2.2.1 is provided with a socket and two communicating holes 2.3.1, the socket is positioned at the outer enclosing plate 2.2, the two communicating holes 2.3.1 are respectively positioned at the two second end plates 2.3, a drying agent box 4 is mounted in the mounting groove 2.2.1, the drying agent box 4 is divided into two accommodating cavities by a drying partition plate, the accommodating cavities are filled with drying agent, each accommodating cavity is provided with one end baffle 4.4 and one material taking hole 4.5, and the end baffle 4.4 faces the communicating holes 2.3.1 and is provided with a material taking hole; the protective tube arrangement comprises two tube units 6 which are spliced and fixed together.
A communication port in which each socket communicates with a space between the outer arc panel 3.3 and the partition plate 3.2 of the corresponding air flow generating unit; a first gasket 3.5 at the first end plate 3.4 and a second gasket 2.4 at the second end plate 2.3; the corresponding first end plate 3.4 and the second end plate 2.3 are fixed through bolts; a counter bore 2.5 is formed in the position of the outer surrounding plate 2.2 of the detection unit 2; the two detection units 2 of each circulation device are fixed through bolts and nuts; the drying agent box 4 comprises an inner side plate 4.7 with a cambered surface shape, an outer side plate 4.1 with a cambered surface shape and two plane side plates 4.2 which are parallel to each other, a drying partition plate of the drying agent box 4 and two end baffle plates 4.4 are parallel to each other, a counter bore 4.6 is arranged at the drying agent box, a fixing bolt 4.3 is arranged at the counter bore 4.6, and a threaded pipe 2.1.1 which is fixedly locked by matching with the fixing bolt 4.3 is arranged at an inner surrounding plate of the detection unit 2; there are 4 slots 2.2.2 at each mounting recess 2.2.1 for insertion by the edges of the planar side plates 4.2. Each airflow generating unit is provided with 2 fan units, 4 inner insertion pipes and 4 outer insertion pipes; each detection unit 2 has one of said mounting recesses 2.2.1 and one of said desiccant cartridges 4. The inner enclosing plate 2.1, the outer enclosing plate 2.2, the inner arc panel 3.1 and the outer arc panel 3.3 are semi-cylindrical plates; the inner diameter of the inner arc panel 3.1 is equal to the inner diameter of the inner surrounding plate 2.1; the outer diameter of the outer arc panel 3.3, the outer diameter of the outer surrounding plate 2.2 and the outer diameter of the outer side plate are equal. And a heat shrinkage tube 5 surrounding the circulating device is also arranged at the installation position. The pipe unit 6 comprises a semicircular cylindrical middle pipe 6.1, two end pipes 6.2 connected with the middle pipe 6.1 and two side flanges 6.3, wherein the side flanges 6.3 are connected with the middle pipe 6.1 and the two end pipes 6.2, the side flanges 6.3 are provided with bolt mounting holes, and the inner sides of the end pipes 6.2 are provided with sealing gaskets 6.4; the middle pipe 6.1 is also provided with a detection port 6.5 and a glue injection hole 6.7, and the detection port 6.5 is provided with a detection port cover 6.6 fixedly connected with the middle pipe 6.1 through a bolt.
After the circulation installation position is processed, the air flow generating unit is inserted into the corresponding inner channel and the corresponding outer channel respectively, then the air flow generating unit and the detecting unit are fixed by bolts after the detecting unit is inserted, the two detecting units are fixed, and the drying agent box is installed and fixed by fixing bolts. And then installing a heat shrinkage pipe, installing a protection pipe device after heat shrinkage, wiring the fan unit (the lead wire of the fan unit can extend out from the end part of the heat shrinkage pipe), and injecting water-blocking glue or sealant into the protection pipe for sealing. When the electric heating cable is used, according to the external temperature, when the external temperature is too low, the heating cable core can be started for auxiliary heating, and when the external temperature is higher, only self-heating of the electric cable core is utilized. When the electric cable is used, the air flow circulates between the inner channel and the outer channel through the fan unit, so that when heat generated by the electric cable core is transferred to the inner channel, the heat is driven into the outer channel by the heat dissipation air flow, the outer surface of the cable is rapidly heated, defrosting, deicing and drying of water vapor are easily realized, and the outer surface of the cable is ensured to be in a dry state as much as possible. The start of each fan can be set to be after rain, early, snow or sea wave weather (temperature information and weather information are acquired through an external control device, and the starting operation can be manually or automatically executed by a program). So that after frosting or wetting of the cable surface, the cable surface is quickly dried after being released from the environment causing the wetting. And the distance between two adjacent circulating installation positions can be set to be 2.5 meters, 5 meters, 10 meters or other distances according to the requirements. The cable is suitable for the fields of outdoor high-end equipment, sea boats and the like, which have limited total cable length and high requirements on heat dissipation and moisture resistance of the cable. In addition, during normal use, the detection flap is not opened. Only after the cable outer protective layer is used for a long time and cracks, the detection opening cover is opened, the heat shrinkage pipe is punctured, a plurality of drying agents are taken out through the material taking hole to detect, and whether water is contained in the space between the inner channel and the outer channel is damaged or not is judged according to the components of the drying agents, so that the state of the cable is monitored. And after the monitoring is finished, the detection port cover can be closed, and the detection port cover can be detected again after a period of time to judge whether the crack on the surface of the cable is truly broken or not and the situation that water vapor is mixed in the outer channel is judged.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the following claims.
Claims (10)
1. The utility model provides a dampproofing fire-retardant insulating power cable, its characterized in that includes outer sheath, outer water-blocking around band layer, outer passageway layer, interior water-blocking around band layer, interior passageway layer, armor, outer fire-retardant layer, shielding layer and outer insulating layer in proper order from outside to interior, have a plurality of power cable cores in the outer insulating layer, power cable core includes interior fire-retardant layer, interior insulating layer and conductor from outside to interior in proper order.
2. The moisture resistant flame retardant insulated power cable of claim 1, wherein the power cable core has 3 or 6; the inner insulating layer is a polyethylene layer, the outer insulating layer is a silicon rubber insulating layer, and the inner flame-retardant layer and the outer flame-retardant layer are low-smoke halogen-free flame-retardant layers; the shielding layer is a copper wire braided shielding layer, the armor layer is a steel wire armor layer, and the conductor is a copper conductor.
3. The moisture-proof flame-retardant insulated power cable according to claim 1, wherein the outer channel layer comprises an outer channel cladding and a plurality of outer channel protrusions connected with the outer channel cladding and distributed in an annular equidistant manner, and the inner channel layer comprises an inner channel cladding and a plurality of inner channel protrusions connected with the inner channel cladding and distributed in an annular equidistant manner, each inner channel protrusion having a heating cable core therein; the outer channel bulge, the inner channel bulge and the heating cable core extend along the length direction of the cable; an outer channel is formed between two adjacent outer channel bulges, and an inner channel is formed between two adjacent inner channel bulges; the heating cable core comprises a heating cable core cladding and a heating cable core conductor from outside to inside.
4. A moisture and flame resistant insulated power cable according to claim 3 wherein all inner channels and all outer channels are filled with water resistant glue.
5. A moisture-resistant flame-retardant insulated power cable according to claim 3, wherein said cable has a plurality of circulation mounting locations, each circulation mounting location having a circulation device and a protective tube means surrounding said circulation device; the outer protective layer, the outer water-blocking wrapping tape layer, the outer channel layer and the inner water-blocking wrapping tape layer at the installation position are removed, and at least one part of the inner channel cladding of the inner channel layer at the installation position is removed; the circulating device comprises two circulating units which are spliced together, wherein each circulating unit comprises two air flow generating units and a detecting unit positioned between the two air flow generating units, each air flow generating unit comprises a first end plate, an inner arc panel connected with the first end plate, an outer arc panel connected with the first end plate, a partition plate connected with the first end plate and positioned between the inner arc panel and the outer arc panel, a plurality of inner insertion pipes connected with the first end plate and a plurality of outer insertion pipes connected with the first end plate, a mounting block is fixed at the partition plate, a fan unit is mounted at the mounting block, the inner insertion pipes are positioned between the inner arc panel and the partition plate, each inner insertion pipe is inserted into one inner channel, each outer insertion pipe is positioned between the outer arc panel and the partition plate, and each outer insertion pipe is inserted into one outer channel; the detection unit comprises an inner enclosing plate, an outer enclosing plate and two second end plates connected between the inner enclosing plate and the outer enclosing plate, wherein each second end plate faces one first end plate of the airflow generation unit, the detection unit is provided with a mounting groove, the mounting groove is provided with a socket and two communication ports, the socket is positioned at the outer enclosing plate, the two communication ports are respectively positioned at the two second end plates, a drying agent box is arranged in the mounting groove, the drying agent box is divided into two accommodating cavities by a drying partition plate, the accommodating cavities are filled with drying agents, each accommodating cavity is provided with one end baffle and one material taking hole, and the end baffle faces the communication port and is provided with air holes; the protective tube device comprises two tube units which are spliced and fixed together.
6. The moisture-resistant flame-retardant insulated power cable according to claim 5, wherein each socket communicates with a communication port in which a space between an outer arc panel of the corresponding air flow generating unit and the partition plate communicates; a first gasket at the first end plate and a second gasket at the second end plate; the corresponding first end plate and the second end plate are fixed through bolts; a counter bore is formed in the outer surrounding plate of the detection unit; the two detection units of each circulation device are fixed through bolts and nuts; the drying agent box comprises an inner side plate with a cambered surface shape, an outer side plate with a cambered surface shape and two plane side plates which are parallel to each other, a drying partition plate and two end baffle plates of the drying agent box are parallel to each other, a counter bore is formed in the drying agent box, a fixing bolt is arranged in the counter bore, and a threaded pipe which is matched with the fixing bolt and is locked and fixed is arranged in an inner surrounding plate of the detection unit; each mounting groove has 4 slots therein for insertion by the edges of the planar side plates.
7. The moisture resistant flame retardant insulated power cable of claim 5, wherein there are 2 fan units, 4 inner cannulas and 4 outer cannulas at each airflow generating unit; each detection unit has one of the mounting grooves and one of the desiccant cartridges.
8. The moisture and flame resistant insulated power cable of claim 6, wherein the inner containment web, outer containment web, inner arc panel and outer arc panel are semi-cylindrical plates; the inner diameter of the inner arc panel is equal to the inner diameter of the inner surrounding plate; the outer diameter of the outer arc panel, the outer diameter of the outer surrounding plate and the outer diameter of the outer side plate are equal.
9. The moisture resistant flame retardant insulated power cable of claim 6, wherein said mounting location further mounts a heat shrink tube surrounding said circulation device.
10. The moisture-proof flame-retardant insulated power cable according to claim 6, wherein the pipe unit comprises a semi-circular cylindrical middle pipe, two end pipes connected with the middle pipe, and two side flanges connected with both the middle pipe and the two end pipes, the side flanges having bolt mounting holes, and the inner sides of the end pipes having gaskets; the middle pipe is also provided with a detection port and a glue injection hole, and the detection port is provided with a detection port cover fixedly connected with the middle pipe through a bolt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310035411.3A CN116013597A (en) | 2023-01-10 | 2023-01-10 | Dampproofing fire-retardant insulating power cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310035411.3A CN116013597A (en) | 2023-01-10 | 2023-01-10 | Dampproofing fire-retardant insulating power cable |
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| CN116013597A true CN116013597A (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310035411.3A Pending CN116013597A (en) | 2023-01-10 | 2023-01-10 | Dampproofing fire-retardant insulating power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117079882A (en) * | 2023-08-16 | 2023-11-17 | 扬州中大电缆有限公司 | Durable dampproofing medium voltage cable that uses |
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| CN205050589U (en) * | 2015-11-05 | 2016-02-24 | 陕西永光电力电缆制造有限公司 | Tight composite conductor overhead composite cable |
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| CN205050589U (en) * | 2015-11-05 | 2016-02-24 | 陕西永光电力电缆制造有限公司 | Tight composite conductor overhead composite cable |
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