CN212084729U - Low-voltage power cable - Google Patents
Low-voltage power cable Download PDFInfo
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- CN212084729U CN212084729U CN202021230431.4U CN202021230431U CN212084729U CN 212084729 U CN212084729 U CN 212084729U CN 202021230431 U CN202021230431 U CN 202021230431U CN 212084729 U CN212084729 U CN 212084729U
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Abstract
The application relates to a low-voltage power cable, including cable core and the tegument of cladding outside the cable core, the tegument is provided with protective structure outward, and protective structure includes interior inoxidizing coating, outer inoxidizing coating, tensile fixed network, and interior inoxidizing coating cladding sets up on the tegument lateral wall outward, and the outer inoxidizing coating cladding sets up on the inoxidizing coating lateral wall including, and the tensile fixed network sets up on the inoxidizing coating and outer protective layer is connected. This application has and bears external pulling force through tensile fixed network, has improved the tensile ability of cable, has reduced the probability of cable damage, has improved the life-span of cable.
Description
Technical Field
The application relates to the technical field of cables, in particular to a low-voltage power cable.
Background
The cable is indispensable in the power transmission and distribution process or the wired communication process, the power cable is mainly used for power supply or electrical connection in a low-voltage line, and the product is suitable for industries such as petroleum, chemical industry, power plants, metallurgy, papermaking, mines, railways and the like, has wide application market development prospect, and has good economic benefit and social benefit.
Among the prior art, can refer to the chinese utility model patent that the grant bulletin number is CN209487213U, it discloses a fire-retardant fire prevention low voltage power cable of high performance mineral insulation, the cable includes the cable core, the peripheral cladding of cable core has from inside to outside in proper order and has the fire-retardant insulating layer of package, the insulating buffer layer that blocks water, ripple copper sheathing layer and tegument, the cable core includes three main fire-retardant insulation core and three ground fire-retardant insulation core, three main fire-retardant insulation core contact each other, three ground fire-retardant insulation core are in the marginal space between three main fire-retardant insulation core, main fire-retardant insulation core and ground fire-retardant insulation core all include the conductor, peripheral cladding auxiliary insulation layer and the phase separation fire-retardant insulating layer of conductor.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the cable is often pulled in the installation and use process, so that the outer layer of the cable is subjected to the largest pulling force, and the common outer layer is made of rubber, so that the tensile capability of the outer layer is poor, the outer layer is easily damaged, and the service life of the cable is shortened.
SUMMERY OF THE UTILITY MODEL
In order to improve the life of the cable, the application provides a low-voltage power cable.
The application provides a low voltage power cable adopts following technical scheme:
the utility model provides a low pressure power cable, includes cable core and the outer tegillum of cladding outside the cable core, be provided with protective structure outside the outer tegillum, protective structure includes interior inoxidizing coating, outer inoxidizing coating, tensile fixed network, interior inoxidizing coating cladding sets up on outer tegillum lateral wall, on the inoxidizing coating lateral wall including outer inoxidizing coating cladding sets up, tensile fixed network sets up including on the inoxidizing coating and outer protective layer is connected.
Through adopting above-mentioned technical scheme, the staff grasps outer inoxidizing coating and stimulates when the pulling cable, and outer inoxidizing coating removes and drives tensile fixed network and interior inoxidizing coating removal, therefore tensile fixed network bears external pulling force, has improved the tensile ability of cable, has reduced the probability of cable damage, has improved the life-span of cable.
Preferably, the tensile fixing net is formed by weaving steel wires and is in a grid shape.
Through adopting above-mentioned technical scheme, latticed steel wire has improved the tensile ability of steel wire, has improved the tensile ability of cable, has improved the life-span of cable.
Preferably, the inner protective layer and the outer protective layer are provided with caulking grooves for embedding steel wires, and a glue layer for connecting the outer protective layer, the outer protective layer and the steel wires together is arranged between the outer protective layer and the inner protective layer.
By adopting the technical scheme, the steel wire is embedded into the caulking groove, so that the contact area between the steel wire and the inner protective layer and between the steel wire and the outer protective layer is increased, the probability of relative slippage between the steel wire and the inner protective layer and between the steel wire and the outer protective layer is reduced, and the stability of the steel wire is improved; and meanwhile, the glue layer further improves the stability of the steel wire.
Preferably, the outer tegument axis is provided with a tensile steel wire, and the inner side wall of the outer tegument is provided with a filling layer which is abutted against the three main fireproof insulation wire cores and the tensile steel wire.
By adopting the technical scheme, the steel wire can play a role in axial strength support, and the axial tensile strength of the cable is improved; the filling layer supports three main fire-proof insulation wire cores and the steel wires, stability of the main fire-proof insulation wire cores and the steel wires is improved, the filling layer can buffer external pressure, and service life of the cable is prolonged.
Preferably, the outer protective layer outer side wall is coated with a fire-proof flame-retardant layer, and the outer side wall of the fire-proof flame-retardant layer is coated with a wear-resistant layer.
By adopting the technical scheme, the wear-resistant layer improves the wear resistance of the cable and prolongs the service life of the cable; the fire-isolating flame-retardant layer reduces the probability that an external fire source ignites the outer protective layer, and prolongs the service life of the cable.
Preferably, the cable core comprises three main fireproof insulation wire cores and three ground fireproof insulation wire cores, and the main fireproof insulation wire cores and the three ground fireproof insulation wire cores are distributed in a staggered mode around the same axis.
By adopting the technical scheme, the space occupied by the main fireproof insulation wire core and the three ground fireproof insulation wire cores is saved, the space occupied by the cable in transportation is reduced, and the convenience in cable transportation is improved.
Preferably, the main fireproof insulation wire core comprises an insulation layer and a main wire core, the insulation layer is arranged on the inner side wall of the outer layer, and the main wire core is arranged on the inner side wall of the insulation layer and formed by mutually winding a plurality of single wire cores.
By adopting the technical scheme, the insulating layer coats the main wire cores, so that the contact probability of the three main wire cores is reduced; a plurality of single-wire cores are mutually wound together, so that the probability that the single-wire cores are mutually dislocated due to movement is reduced, and the stability of the main wire core is improved.
Preferably, be provided with the fire prevention fire-retardant layer on the insulating layer inside wall, be provided with on the fire prevention fire-retardant layer with main line core joint complex joint groove.
By adopting the technical scheme, the protective flame-retardant layer reduces the probability that the main wire core is overheated to ignite the insulating layer, and prolongs the service life of the cable; and meanwhile, the main wire core is clamped and installed on the clamping groove, so that the probability of relative displacement between the main wire core and the fireproof flame-retardant layer is reduced, and the stability of the main wire core after installation is improved.
Preferably, the fireproof flame-retardant layer is a tinned copper wire woven layer, and the inner side and the outer side of the tinned copper wire woven layer are respectively provided with polypropylene and chlorinated polyethylene.
Through adopting above-mentioned technical scheme, chlorinated polyethylene and polypropylene have fine flame retardant efficiency to improve the fire behavior of cable, the tinned copper wire weaving layer also has anti-jamming ability simultaneously.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the tensile fixing net is used for bearing external tensile force, so that the tensile capacity of the cable is improved, the probability of damage of the cable is reduced, and the service life of the cable is prolonged;
2. the steel wire is embedded into the caulking groove, so that the contact area between the steel wire and the inner protective layer and between the steel wire and the outer protective layer is increased, the probability of relative slippage between the steel wire and the inner protective layer and between the steel wire and the outer protective layer is reduced, and the stability of the steel wire is improved;
3. the main wire cores are coated by the insulating layer, so that the contact probability of the three main wire cores is reduced; a plurality of single-wire cores are mutually wound together, so that the probability that the single-wire cores are mutually dislocated due to movement is reduced, and the stability of the main wire core is improved.
Drawings
Fig. 1 is a schematic perspective view of the present application, omitting a connecting mechanism;
FIG. 2 is a schematic structural view of a cable core according to the present application, wherein the inner protective layer, the filler layer, the insulating layer and the side wall of the flame retardant layer are partially cut away;
FIG. 3 is a schematic structural view of the cushioning and protective structures of the present application, with the outer protective layer, fire barrier and wear layer side walls partially in section;
FIG. 4 is a schematic structural view of the connection mechanism of the present application;
fig. 5 is an exploded view of the connection mechanism of the present application.
Reference numerals: 1. a tegument layer; 11. a tensile steel wire; 12. a filling layer; 2. a cable core; 21. a primary fire-resistant insulated wire core; 22. a ground fireproof insulated wire core; 23. an insulating layer; 24. a main wire core; 25. a fire resistant and flame retardant layer; 26. a clamping groove; 3. a buffer structure; 31. an inner protective layer; 32. an outer protective layer; 33. a compression-resistant buffer layer; 4. a protective structure; 41. an inner protective layer; 42. an outer protective layer; 43. a tensile fixing net; 44. caulking grooves; 45. a glue layer; 46. a fire barrier flame retardant layer; 47. a wear layer; 5. a connecting mechanism; 51. a first connecting ring; 511. a seal ring; 512. a sealing strip; 52. a second connection ring; 521. mounting blocks; 53. a locking member; 54. a locking block; 55. locking the screw rod; 56. a first conductive ring; 57. a second conductive ring.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a low-voltage power cable.
Referring to fig. 1 and 2, the cable core 2 comprises a cable core 2 and a jacket layer 1 coated on the outer side wall of the cable core 2, the cable core 2 comprises three main fireproof insulation wire cores 21 and three ground fireproof insulation wire cores 22, and the three main fireproof insulation wire cores 21 and the three ground fireproof insulation wire cores 22 are distributed around the axis of the jacket layer 1 in a staggered manner.
Three main fire prevention insulation core 21 and three ground fire prevention insulation core 22 structures are the same, below explain with main fire prevention insulation core 21 structure as an example, main fire prevention insulation core 21 includes insulating layer 23, main core 24, insulating layer 23 fixed mounting is on outer 1 inside wall of tegillum, main core 24 is installed on insulating layer 23 inside wall, and main core 24 is formed by many single core intertwines, fixed mounting has fire prevention fire-retardant layer 25 on the insulating layer 23 inside wall, seted up on fire prevention fire-retardant layer 25 inside wall a plurality ofly with single core joint complex joint groove 26.
Install a tensile steel wire 11 on the axis of tegument 1, install filling layer 12 between three main fire prevention insulated wire cores 21 and three ground fire prevention insulated wire cores 22 and be located tegument 1, and filling layer 12 is the mixture of talcum powder and magnesium carbonate, and the talcum powder is widely used as the cable isolating agent to reduce the probability of mutual contact friction between insulating layer 23, reduced the wearing and tearing between insulating layer 23.
Referring to fig. 1 and fig. 3, the cladding has buffer structure 3 on the outer lateral wall of tegument 1, buffer structure 3 includes interior protective layer 31, outer protective layer 32, resistance to compression buffer layer 33, interior protective layer 31 cladding is on outer lateral wall of tegument 1, on inner protective layer 31 lateral wall is wrapped to outer protective layer 32, resistance to compression buffer layer 33 sets up between inner protective layer 31 and outer protective layer 32, and resistance to compression buffer layer 33 and inner protective layer 31 and outer protective layer 32 fixed connection, resistance to compression buffer layer 33 is the buffer tube, and the buffer tube is wavy along the projection of inner protective layer 31 axis, the buffer tube is radially provided with a plurality ofly along inner protective layer 31 simultaneously, and the buffer tube figure can be two, two buffer tubes superpose each other together, the crest position of two wavy structures simultaneously is.
Outer protective layer 32 lateral wall is provided with protective structure 4, protective structure 4 includes interior inoxidizing coating 41, outer inoxidizing coating 42, tensile fixed network 43, the cladding of interior inoxidizing coating 41 is installed on outer inoxidizing coating 42 lateral wall, inoxidizing coating 41 lateral wall including the cladding of outer inoxidizing coating 42 is installed, tensile fixed network 43 sets up between inoxidizing coating 41 and outer inoxidizing coating 42 including, and tensile fixed network 43 and interior inoxidizing coating 41 and the equal fixed connection of outer inoxidizing coating 42, tensile fixed network 43 is woven by the steel wire and is formed, and tensile fixed network 43 is latticed.
An embedded groove 44 for embedding the steel wire is formed in the inner protective layer 41 and the outer protective layer 42, a glue layer 45 is arranged between the outer protective layer 42 and the inner protective layer 41, and the outer protective layer 42, the outer protective layer 42 and the steel wire are fixedly connected together through the glue layer 45; the fire-proof flame-retardant layer 46 is installed on the outer side wall of the outer protective layer 42 in a wrapping mode, the fire-proof flame-retardant layer 25 and the fire-proof flame-retardant layer 46 are identical in structure, the fire-proof flame-retardant layer 25 is explained as an example below, the fire-proof flame-retardant layer 25 is a tinned copper wire woven layer, and polypropylene and chlorinated polyethylene are installed on the inner side and the outer side of the tinned copper wire woven layer respectively. The outer side wall of the fire-proof and flame-retardant layer 46 is coated with a wear-resistant layer 47.
Referring to fig. 1 and 4, the main fire-resistant insulated wire core 21 and the ground fire-resistant insulated wire core 22 of two adjacent cables are connected together by the connection mechanism 5, and the connection mechanism 5 for connecting the two main fire-resistant insulated wire cores 21 is explained as an example.
Referring to fig. 4 and 5, the connection mechanism 5 includes a first connection ring 51, a second connection ring 52, a conductive tube, and a locking member 53, wherein the side walls of the side where the first connection ring 51 and the second connection ring 52 are close to each other are rotatably connected together, and the first connection ring 51 and the second connection ring 52 are both semi-circular, and the first connection ring 51 and the second connection ring 52 are matched to be circular to clamp the insulation layer 23.
The conductive tube is installed on the first connecting ring 51, and the conductive tube includes a first conductive ring 56 and a second conductive ring 57, and the first conductive ring 56 and the second conductive ring 57 are respectively and fixedly installed on the inner side wall of the opposite side of the first connecting ring 51 and the second connecting ring 52, and the first conductive ring 56 and the second conductive ring 57 are both semicircular, the first conductive ring 56 and the second conductive ring 57 are matched to be circular, when the first connecting ring 51 and the second connecting ring 52 are matched to clamp the insulating layer 23, and the first conductive ring 56 and the second conductive ring 57 are matched to clamp the main wire core 24.
The locking member 53 is disposed on the first connection ring 51 and connected to the second connection ring 52, the locking member 53 includes a locking block 54 and a locking screw 55, the locking block 54 is fixedly mounted on the outer side wall of the second connection ring 52, a mounting block 521 is fixedly mounted on the outer side wall of the first connection ring 51, and the locking screw 55 passes through the mounting block 521 and is in threaded connection with the locking block 54.
The locking screw 55 is screwed to increase the distance between the first connecting ring 51 and the second connecting ring 52, a part of the insulating layer 23 on two adjacent main cores 24 is peeled off to expose the main cores 24, one end of the insulating layer 23 is placed on the first connecting ring 51, so that the main cores 24 are placed in the first conductive ring 56, the insulating layer 23 abuts against the first conductive ring 56 to be positioned, then the locking screw 55 is screwed to drive the second connecting ring 52 to be matched with the first connecting ring 51 to clamp the insulating layer 23, and the second conductive ring 57 is matched with the first conductive ring 56 to clamp the main cores 24, so that the two main fireproof insulating cores 21 are fixedly connected together.
Both ends of the second connection ring 52 of the first connection ring 51 are fixedly provided with a sealing ring 511 abutting against the outer side wall of the insulating layer 23, and a sealing strip 512 abutting against the second connection ring 52 is fixedly arranged on the side wall of the first connection ring 51 close to the second connection ring 52.
The working principle of the embodiment of the application is as follows:
the locking screw 55 is screwed to increase the distance between the first connecting ring 51 and the second connecting ring 52, one end of the insulating layer 23 is placed on the first connecting ring 51, so that the main wire core 24 is placed in the first conducting ring 56, then the locking screw 55 is screwed to enable the second connecting ring 52 and the first connecting ring 51 to be matched to clamp the insulating layer 23, and the second conducting ring 57 and the first conducting ring 56 are matched to clamp the main wire core 24, so that the main fireproof insulating wire core 21 is fixedly connected together, and meanwhile, the ground fireproof insulating wire core 22 is fixedly connected together in the same method, so that two cables can be fixedly connected together, meanwhile, the main fireproof insulating wire core 21 or the ground fireproof insulating wire core 22 can be connected according to the damage condition of the cables, and the efficiency of cable connection is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a low pressure power cable, includes cable core (2) and cladding tegument (1) outside cable core (2), its characterized in that: outer tegument (1) is provided with protective structure (4) outward, protective structure (4) are including interior inoxidizing coating (41), outer inoxidizing coating (42), tensile fixed net (43), interior inoxidizing coating (41) cladding sets up on tegument (1) lateral wall outward, inoxidizing coating (41) lateral wall including outer inoxidizing coating (42) cladding sets up, tensile fixed net (43) set up including on inoxidizing coating (41) and outer inoxidizing coating (42) are connected.
2. A low voltage power cable according to claim 1, characterized in that: the tensile fixing net (43) is formed by weaving steel wires and is in a grid shape.
3. A low voltage power cable according to claim 2, characterized in that: the inner protective layer (41) and the outer protective layer (42) are provided with caulking grooves (44) for embedding steel wires, and a glue layer (45) for connecting the outer protective layer (42), the outer protective layer (42) and the steel wires together is arranged between the outer protective layer (42) and the inner protective layer (41).
4. A low voltage power cable according to claim 1, characterized in that: be provided with tensile steel wire (11) on tegument (1) axis, be provided with filling layer (12) of contradicting on three main fire prevention insulation sinle silks (21) and tensile steel wire (11) on tegument (1) inside wall.
5. A low voltage power cable according to claim 1, characterized in that: the outer protection layer (42) outer side wall is coated with a fire-proof flame-retardant layer (46), and the outer side wall of the fire-proof flame-retardant layer (46) is coated with a wear-resistant layer (47).
6. A low voltage power cable according to claim 1, characterized in that: the cable core (2) comprises three main fireproof insulation wire cores (21) and three ground fireproof insulation wire cores (22), and the main fireproof insulation wire cores (21) and the three ground fireproof insulation wire cores (22) are distributed in a staggered mode around the same axis.
7. A low voltage power cable according to claim 6, characterized in that: main fire prevention insulation core (21) include insulating layer (23), main line core (24), insulating layer (23) set up on outer tegument (1) inside wall, main line core (24) set up on insulating layer (23) inside wall and by many single-wire core intertwine form.
8. A low voltage power cable according to claim 7, characterized in that: be provided with fire prevention fire-retardant layer (25) on insulating layer (23) inside wall, be provided with on fire prevention fire-retardant layer (25) with main line core (24) joint complex joint groove (26).
9. A low voltage power cable according to claim 8, wherein: the fireproof flame-retardant layer (25) is a tinned copper wire woven layer, and the inner side and the outer side of the tinned copper wire woven layer are respectively provided with polypropylene and chlorinated polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021230431.4U CN212084729U (en) | 2020-06-29 | 2020-06-29 | Low-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021230431.4U CN212084729U (en) | 2020-06-29 | 2020-06-29 | Low-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212084729U true CN212084729U (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021230431.4U Active CN212084729U (en) | 2020-06-29 | 2020-06-29 | Low-voltage power cable |
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| Country | Link |
|---|---|
| CN (1) | CN212084729U (en) |
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2020
- 2020-06-29 CN CN202021230431.4U patent/CN212084729U/en active Active
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