CN220526641U - Agricultural buried cable - Google Patents
Agricultural buried cable Download PDFInfo
- Publication number
- CN220526641U CN220526641U CN202322004780.4U CN202322004780U CN220526641U CN 220526641 U CN220526641 U CN 220526641U CN 202322004780 U CN202322004780 U CN 202322004780U CN 220526641 U CN220526641 U CN 220526641U
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- Prior art keywords
- layer
- conductor
- water
- buried cable
- blocking
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- 239000004020 conductor Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000000903 blocking effect Effects 0.000 claims abstract description 22
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 241000256602 Isoptera Species 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000011049 filling Methods 0.000 claims description 8
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 claims description 5
- 229920000299 Nylon 12 Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 230000017105 transposition Effects 0.000 claims description 2
- 241000283984 Rodentia Species 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 241000700159 Rattus Species 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model discloses an agricultural buried cable, which comprises at least one conductor, wherein the conductor is formed by tightly pressing and twisting aluminum alloy molded lines, an insulating layer is wrapped outside the conductor, the outer surface of the insulating layer is connected with an inner water-blocking isolation sleeve, an armor layer is arranged on the outer surface of the inner water-blocking isolation sleeve, an inner water-blocking tape layer is arranged on the outer surface of the armor layer, an outer water-blocking isolation sleeve is connected with the outer surface of the inner water-blocking tape layer, a metal sheath layer is arranged on the outer surface of the metal sheath layer, an outer water-blocking tape layer is arranged on the outer surface of the outer water-blocking tape layer, and the outer surface of the outer water-blocking tape layer is connected with a rat-proof and termite-proof outer sheath. The scheme has the advantages of light dead weight, good water blocking performance, strong tensile and compressive properties, excellent rat and termite resistance, wide application places, simple and convenient laying mode and the like, and can be widely applied to villages and towns, wild fields, farmlands, road periphery and other areas.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to an agricultural buried cable.
Background
At present, china is comprehensively advancing village to be in vibration, and some old overhead insulated lines need to be modified and are recommended to be replaced by buried cables. Compared with an overhead insulated cable, the buried cable has no buried electric pole, does not need to be overhead, does not occupy cultivated land, is not influenced by tree vegetation, and is not influenced by natural disasters such as storm, rain, snow, freezing and the like. The device is little affected by dead weight, few in middle joints, long in laying distance and high in reliability. Compared with an overhead insulated cable, the direct-buried cable can better ensure the safety of electricity used by residents and the reliable and stable electricity used by grains and cash crops.
The existing agricultural buried cable has the defects of single type and function, water resistance, corrosion resistance, rat and termite resistance, internal and external acting force resistance and the like, and is frequently broken down in actual use, more maintenance times, short in service life and difficult in economic loss and user electricity utilization due to complex laying and using environment places such as high drop height, gravel land, acid-base soil, wetland and the like.
Disclosure of Invention
Aiming at the technical problems existing at present, the utility model provides an agricultural buried cable, which aims to solve the problems in the prior art.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model provides an agricultural buried cable, includes at least one conductor, and this conductor adopts aluminum alloy molded lines monofilament to sticis the transposition to form, the conductor outsourcing has the insulating layer, the surface on insulating layer is connected with interior water blocking isolation sleeve, the armor is established to the surface of interior water blocking isolation sleeve, the surface on armor is established interior water blocking tape layer, interior water blocking isolation sleeve is connected to interior water blocking tape layer surface, water blocking isolation sleeve surface is established the metal sheath layer, the outer water blocking tape layer is established to the metal sheath layer surface, the outer rat and termite protection oversheath is connected to the surface on outer water blocking tape layer.
Preferably, the agricultural buried cable comprises one conductor.
Preferably, the agricultural buried cable comprises a plurality of conductors, and each conductor is wrapped with one insulating layer.
Preferably, a water-blocking filling rope is arranged in an area surrounded by the conductors.
Preferably, the aluminum alloy profile monofilaments are of a T-shaped structure.
Preferably, the material of the armor layer is aluminum alloy wire.
Preferably, the metal sheath layer adopts a smooth aluminum sheath of a welding process.
Preferably, the rat and termite preventing outer sheath is made of nylon 12.
Compared with the prior art, the utility model has the beneficial effects that: the scheme has the advantages of light dead weight, good water blocking performance, strong tensile and compressive properties, excellent rat and termite resistance, wide application places, simple and convenient laying mode and the like, and can be widely applied to villages and towns, wild fields, farmlands, road periphery and other areas.
Description of the drawings:
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present utility model is limited to the following embodiments, and all techniques realized based on the present utility model are within the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Example 1
An agricultural buried cable shown in fig. 1, the embodiment is a single-core cable, and comprises a conductor 1, wherein the conductor 1 is formed by tightly pressing and twisting aluminum alloy molded line monofilaments, the aluminum alloy molded line monofilaments are of a T-shaped structure, the parallel line angle and the tension of the molded line monofilaments need to be paid attention to in the twisting process, the molded line monofilaments can be turned over due to the discomfort of the parallel line angle and the tension, the molded line monofilaments are blocked at the entrance of a stranded wire die, the shape of the stranded conductor is irregular, and the like, the aluminum alloy molded line monofilaments are compact in structure and have a filling coefficient of up to 98%, and compared with a round monofilament pressed conductor with the same specification (the filling coefficient is not more than 92%), the outer diameter of the conductor is smaller, and materials coated outside the conductor are less; in addition, the molded line compressed stranded conductor has smaller resistivity than a round monofilament compressed conductor, and the section is more optimized compared with the specification, so that the material and the cost are saved.
The conductor 1 is externally wrapped with an insulating layer 2, the outer surface of the insulating layer 2 is wrapped with an inner water-blocking isolation sleeve 3 in an extrusion type, the outer surface of the inner water-blocking isolation sleeve 3 is provided with an armor layer 4, and the armor layer 4 is made of aluminum alloy wires. The armoring equipment needs to adopt back-twisting equipment, otherwise, the metal wire has larger internal stress, so that wire jump, back-scattering, twisting and the like are caused. The number of the aluminum alloy wires before armor is calculated well, too few wires can cause large gaps among the wires, and the wires are stressed unevenly when being subjected to external tension; excessive numbers can lead to wire rows that do not fall and internal stresses between wires that are large. In addition, the pitch of the metal wire also affects the quality of the product, and too small pitch can lead to large internal stress of the metal wire, so that the metal wire or the wire core is twisted; too large a pitch can result in loosening of the wire and insufficient tension bearing capacity of the wire core.
The outer surface of the armor layer 4 is wrapped with an inner water-blocking tape layer 5, and the overlapping rate of the water-blocking tape is 15-25%. An outer water-blocking isolation sleeve 6 is extruded on the outer surface of the inner water-blocking tape layer 5, a metal sheath layer 7 is coated on the outer surface of the water-blocking isolation sleeve 6 by using a welding process, and the metal sheath layer 7 is a smooth aluminum sheath. The outer surface of the metal sheath layer 7 is wrapped with an outer water-blocking tape layer 8, and the overlapping rate of the water-blocking tape is 15-25%; the outer surface of the outer water-blocking tape layer 8 is extruded with a rat and termite preventing outer sheath 9, and the rat and termite preventing outer sheath 9 is made of nylon 12. The moisture is easy to absorb, and the drying is needed before the use; the processing temperature range is narrow, the requirements on the extrusion temperature and the screw are high, and the low-speed extrusion by using a mutant screw or a separation screw is recommended. The low extrusion temperature can lead to plastics condensation, jam mould, damage screw rod, and the high extrusion temperature can lead to plastics scorch, screw rod skidding, and the too fast volume of probably leading to out gluey unstable, bamboo joint, degumping etc..
Example two
Unlike the previous embodiment, the present embodiment is a multi-core cable, which includes a plurality of conductors 1, each of the conductors 1 is covered with an insulating layer 2, the insulating cores are stranded into a cable, and the center of the cable core is filled with a water-blocking filling rope 10, and the other structures are the same as those of the previous embodiment, and will not be repeated.
The advantages of the utility model are as follows:
1. the conductor adopts molded lines to compress and twist the conductor: the structure is compact, the filling coefficient is up to 98%, and compared with a round monofilament compressed conductor with the same specification (the filling coefficient is not more than 92%), the outer diameter of the conductor is smaller, and the material used for coating the conductor is less; in addition, the molded line compressed stranded conductor has smaller resistivity than a round monofilament compressed conductor, and the section is more optimized compared with the specification, so that the material and the cost are saved.
2. The conductor material is aluminum alloy: the conductivity of the alloy is 61.5% of copper IACS, the current-carrying capacity is 79% of copper, and the alloy is superior to the pure aluminum standard. Comparative pure aluminum conductor: its creep resistance is improved by 300%, and relaxation due to cold flow or creep is preventedThe following problems: the aluminum alloy also has a greater tensile strength with a density of 2.71g/cm 3 Copper density of 8.89g/cm 3 It can support a dead weight of 4000 meters in length, whereas copper conductor cables can only support 2750 meters. Aluminum alloy conductors also have good corrosion resistance properties, forming a thin and strong oxide layer when the surface is in contact with air, which oxide layer is resistant to various forms of corrosion.
3. The scheme has excellent water blocking performance: firstly, the conductor is tightly pressed by a molded line to form a stranded conductor, the filling coefficient is up to 98%, gaps among monofilaments are small, and water diffusion can be effectively prevented. In addition, the utility model is provided with a plurality of alternate water-blocking layers, an inner water-blocking isolation sleeve, an inner double-sided water-blocking isolation layer, a smooth aluminum sheath and an outer double-sided water-blocking tape; the double-sided water blocking tape and the water blocking rope have the characteristics of strong water absorption and high expansion rate, can strongly absorb water and rapidly expand, and form gel substances to block a water seepage channel. LLDPE cable materials are adopted for the inner water-blocking isolation sleeve and the outer water-blocking isolation sleeve, so that the density is low, and the weight is light. Besides the characteristics of good water and humidity resistance, the composite material has the advantages of excellent tensile strength, tearing strength, environmental stress cracking resistance, low temperature resistance, heat resistance, puncture resistance and the like. The smooth aluminum sheath layer has good sealing performance and tight fit, and can effectively prevent water and other corrosive liquids from penetrating. The utility model can achieve excellent radial and longitudinal water blocking effects through the plurality of alternate water blocking layers.
4. The outer layer adopts smooth aluminum sheath welding cladding, the inner layer adopts aluminum alloy wire armor to have good mechanical property and electrical property:
(1) the cable has good tensile property, can bear larger pulling force, is not easy to damage when being laid and pulled, and can bear larger dead weight when being laid in places with large drop.
(2) The cable has good compression resistance, can be used for underground laying without using steel belts, and can protect the inner cable core from being damaged when being laid in sand and gravel fields.
(3) The metal layer has good creep resistance, and is not easy to deform between metal lattices to damage the shape under the influence of dead weight, temperature and internal force.
(4) The anti-vibration performance is good, and no additional vibration-proof device is needed in the common vibration place. Such as: bridge, railway, highway perimeter.
(5) The aluminum sheath and the aluminum alloy wire have good shielding performance, can shield surrounding electromagnetic interference, and ensure stable current and signal transmission. The conductivity of the steel strips is better than that of the steel strips and the steel wires, so that the steel strips and the steel wires can bear larger fault current and ensure the safety of the circuit.
5. The scheme has excellent rat and termite resistance, and firstly, the two layers of metal, namely the aluminum sheath and the aluminum alloy wire armor, are adopted inside the scheme to effectively resist biting of rats and termites; the outer sheath is made of nylon 12 material, has the characteristics of excellent wear resistance, cutting resistance, oil resistance, corrosion resistance, heat resistance, high hardness, high lubrication and the like, and can resist biting of mice and termites; in addition, the nylon 12 material is halogen-free, nontoxic and harmless to soil and surrounding environment when being directly buried.
The foregoing describes preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. An agricultural buried cable, which is characterized in that: including at least one conductor (1), this conductor (1) adopts aluminum alloy molded lines monofilament to sticis the transposition to form, the outer parcel of conductor (1) has insulating layer (2), the surface of insulating layer (2) is connected with interior water blocking isolation cover (3), armor (4) are established to the surface of interior water blocking isolation cover (3), interior water blocking tape layer (5) are established to the surface of armor (4), the outer isolation cover (6) that blocks water of water blocking tape layer (5) external surface connection, metal sheath layer (7) are established to water blocking isolation cover (6) external surface, outer water blocking tape layer (8) are established to metal sheath layer (7) external surface, the outer surface connection protection against rodents ant oversheath (9) of outer water blocking tape layer (8).
2. An agricultural buried cable according to claim 1, characterized in that: the agricultural buried cable comprises a conductor (1).
3. An agricultural buried cable according to claim 1, characterized in that: the agricultural buried cable comprises a plurality of conductors (1), and each conductor (1) is wrapped by one insulating layer (2).
4. An agricultural buried cable according to claim 3, wherein: a water-blocking filling rope (10) is arranged in an area surrounded by the conductors (1).
5. An agricultural buried cable according to claim 1, characterized in that: the aluminum alloy molded line monofilament is of a T-shaped structure.
6. An agricultural buried cable according to claim 1, characterized in that: the armor layer (4) is made of aluminum alloy wires.
7. An agricultural buried cable according to claim 1, characterized in that: the metal sheath layer (7) adopts a smooth aluminum sheath of a welding process.
8. An agricultural buried cable according to claim 1, characterized in that: the rat and termite preventing outer sheath (9) is made of nylon 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322004780.4U CN220526641U (en) | 2023-07-27 | 2023-07-27 | Agricultural buried cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322004780.4U CN220526641U (en) | 2023-07-27 | 2023-07-27 | Agricultural buried cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220526641U true CN220526641U (en) | 2024-02-23 |
Family
ID=89926821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322004780.4U Active CN220526641U (en) | 2023-07-27 | 2023-07-27 | Agricultural buried cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220526641U (en) |
-
2023
- 2023-07-27 CN CN202322004780.4U patent/CN220526641U/en active Active
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