CN212084705U - Low temperature resistant flexible cable - Google Patents
Low temperature resistant flexible cable Download PDFInfo
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- CN212084705U CN212084705U CN202021078365.3U CN202021078365U CN212084705U CN 212084705 U CN212084705 U CN 212084705U CN 202021078365 U CN202021078365 U CN 202021078365U CN 212084705 U CN212084705 U CN 212084705U
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- low temperature
- temperature resistant
- sinle silk
- flexible cable
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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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model relates to a low temperature resistant flexible cable, it includes a plurality of sinle silks, a plurality of sinle silks periphery wall cladding has the band layer that blocks water jointly in proper order, flame retardant coating and low temperature resistant sheath, a plurality of sinle silks enclose to close drum axis department that forms and are provided with along sinle silk length direction's carrier, carrier includes the transversal flexible body of personally submitting regular polygon and sets up the wire rope in flexible body axle center department, wire rope sets up along its length direction with low temperature resistant sheath is coaxial, sinle silk cambered surface periphery wall supports tightly with flexible body plane side. This application improves the tensile of sinle silk through wire rope and pulls the performance, carries out the bearing through the bending type of flexible body to a plurality of sinle silks, has promoted low temperature resistant flexible cable and has carried out the bending type and the tensile resistance of its inside sinle silk under outdoor adverse circumstances, and is more stable during the transmission electric power, and life is longer.
Description
Technical Field
The application relates to the field of electric wires and cables, in particular to a low-temperature-resistant flexible cable.
Background
The cable made of the traditional insulating material is hard and fragile when meeting severe cold, and particularly in a severe environment of 50 ℃ below zero, the insulating layer is easy to break, so that the cable loses the normal power transmission function. Therefore, a low-temperature-resistant cable adopting a special insulating layer is provided in the market, has excellent cold resistance and can be normally installed and used under the cold condition in winter. Even if the cable is acted by external force at an ultralow temperature, the cable outer sheath still has good physical mechanical, electrical and aging resistance, and cannot crack, so that the safety of the cable is greatly improved, and the service life of the cable is greatly prolonged.
The existing Chinese patent with patent publication number CN203812617U provides a low-temperature-resistant cable, which comprises a wire core, a filling layer, a water-blocking wrapping tape, a water-blocking inner cushion layer, a fire-resistant layer and a low-temperature-resistant sheath, wherein the wire core is arranged in the water-blocking wrapping tape, the filling layer is arranged between the wire core and the water-blocking wrapping tape, the water-blocking inner cushion layer is arranged outside the water-blocking wrapping tape, the fire-resistant layer is arranged outside the water-blocking inner cushion layer, and the low-temperature-resistant sheath is arranged outside the fire-resistant; the conductor, the conductor shielding layer, the insulating shielding layer, the copper strip shielding layer and the core fire-resistant layer are sequentially arranged on the core from inside to outside; the sinle silk is equipped with three, and three sinle silks are tangent to be set up. The low-temperature-resistant special cable is low-temperature-resistant, is not easy to crack, has good water-blocking performance, and is suitable for low-temperature arid northern areas.
Aiming at the related technologies, the inventor thinks that when the low-temperature-resistant cable is erected at high altitude for use, the low-temperature-resistant cable is affected by thermal expansion and cold contraction, the whole low-temperature-resistant cable has the phenomenon of interval sag in summer and the phenomenon of tightening and contraction in winter, and the conductor in the cable core is easily stretched or bent and damaged in different degrees, so that the service life of the low-temperature-resistant cable in the outdoor environment is affected.
Disclosure of Invention
In order to solve the problem that a low-temperature-resistant cable is poor in outdoor tensile resistance and bending resistance, the application provides a low-temperature-resistant flexible cable.
The application provides a low temperature resistant flexible cable adopts following technical scheme:
the utility model provides a low temperature resistant flexible cable, includes a plurality of sinle silk, and is a plurality of the sinle silk periphery wall has the band layer that blocks water, flame retardant coating and low temperature resistant sheath jointly in proper order the cladding, and is a plurality of the sinle silk encloses and closes drum axis department that forms and is provided with the edge sinle silk length direction's carrier, carrier includes that transversal personally submitting regular polygon's flexible body and setting are in the wire rope of flexible body axle center department, wire rope with low temperature resistant sheath is coaxial and set up along its length direction, sinle silk cambered surface periphery wall with flexible body plane side supports tightly.
Through adopting above-mentioned technical scheme, low temperature resistant sheath has stronger cold resistance under outdoor low temperature environment, even also can effectively protect its inside a plurality of sinle silks under the circumstances of lower temperature, when low temperature resistant flexible cable takes place expend with heat and contract with cold when winter and summer are in turn, wire rope in the carrier can play the tensile protection effect of tearing to a plurality of sinle silks, and the flexible body then plays good bearing effect to the bending of a plurality of sinle silks, in order to avoid excessive bending of sinle silks, make whole low temperature resistant flexible cable even still have better pliability in chilly winter, the bending resistance and the tensile resistance of its inside sinle silks of low temperature resistant flexible cable under outdoor adverse circumstances have been promoted, it is more stable during the transmission of electric power, long service life.
Preferably, a plurality of buffer cavities which correspond to the wire cores one to one are formed in the flexible body, and the buffer cavities are arranged along the length direction of the wire cores.
Through adopting above-mentioned technical scheme, when the sinle silk excessively bends or suffers external force and assaults, the kink extrusion flexible body of sinle silk is equipped with one side of cushion chamber, can provide certain buffering for the sinle silk is unlikely to by excessively buckling, has further improved the pliability of low temperature resistant flexible cable.
Preferably, the cross section of the buffer cavity is crescent, and the circle center of the arc cavity wall of the buffer cavity deviates from the steel wire rope.
Through adopting above-mentioned technical scheme, crescent cushion chamber and the cross-section adaptation of sinle silk for the sinle silk can imbed in the deformation position of flexible body perfectly when excessively buckling or suffering the impact, causes the extrusion to the sinle silk that closes on in order to avoid this sinle silk emergence skew.
Preferably, a connecting piece is arranged between the wire core and the flexible body.
Through adopting above-mentioned technical scheme, the sinle silk passes through the connecting piece and is connected with the flexible body for the flexibility can provide lasting effectual bearing of buckling for the sinle silk, further ensures the good anti bending property of sinle silk.
Preferably, the connecting piece includes that the interval rigid coupling is in the inserted block on the sinle silk periphery wall, the inserted block is kept away from the one end of sinle silk extends to in the cushion chamber.
Through adopting above-mentioned technical scheme, the inserted block that the interval was laid on the sinle silk is connected sinle silk and flexible body for the sinle silk can the very first time when taking place to buckle on deformation transmission to the flexible body will buckle, makes the flexible body can provide effective bearing for a plurality of sinle silks constantly.
Preferably, a reinforcing rope is arranged between every two adjacent wire cores along the length direction of the wire cores.
Through adopting above-mentioned technical scheme, strengthen the holistic tensile of rope further improvement low temperature resistant flexible cable and tear the performance, have certain bending resistance simultaneously concurrently for erect that the low temperature resistant flexible cable mechanical properties in the high sky is stronger.
Preferably, the plurality of reinforcing ropes and the outer peripheral walls of the plurality of wire cores are jointly wrapped with a woven layer, and the woven layer is arranged on the inner side of the water blocking wrapping tape layer.
Through adopting above-mentioned technical scheme, the weaving layer carries out the cladding design to a plurality of strengthening ropes and a plurality of sinle silk on the one hand, still can tie up a plurality of strengthening ropes and a plurality of sinle silks simultaneously and tightly in order to reduce its occupation space, reduces low temperature resistant flexible cable's cross-sectional area as far as possible.
Preferably, a shielding layer is arranged between the water blocking belting layer and the fire-resistant layer and is formed by weaving galvanized copper wires.
By adopting the technical scheme, the shielding layer can effectively shield the external electromagnetic field so as to prevent the transmission signals in the low-temperature-resistant flexible cable from being interfered.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the steel wire rope in the bearing piece can play a role in pulling-resistant protection on the plurality of wire cores, and the flexible body plays a good role in bearing bending of the plurality of wire cores so as to prevent the wire cores from being excessively bent, so that the whole low-temperature-resistant flexible cable still has good flexibility even in cold winter, and the bending resistance and the tensile resistance of the wire cores in the low-temperature-resistant flexible cable in outdoor severe environment are improved;
2. the buffer cavity can provide certain buffer for the bending of the wire core, so that the wire core is not excessively bent, and the flexibility of the low-temperature-resistant flexible cable is further improved;
3. the inserted block that the interval was laid on the sinle silk is connected sinle silk and flexible body for the sinle silk can the very first time when taking place to buckle on deformation transmits to the flexible body, makes the flexible body can provide effective bearing for a plurality of sinle silks constantly.
Drawings
Fig. 1 is a schematic sectional structure diagram of the present invention.
Reference numerals: 1. a wire core; 2. a water-blocking tape layer; 3. a refractory layer; 4. a low temperature resistant jacket; 5. a flexible body; 6. a wire rope; 7. a buffer chamber; 8. inserting a block; 9. a reinforcing cord; 10. weaving layer; 11. and a shielding layer.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
The embodiment of the application discloses low temperature resistant flexible cable. Referring to fig. 1, the low temperature resistant flexible cable comprises a plurality of wire cores 1, wherein each wire core 1 comprises a conductor formed by twisting a plurality of copper wires and an insulating layer extruded outside the conductor, the outer peripheral walls of the plurality of wire cores 1 are jointly and sequentially coated with a water blocking belting layer 2, a fire-resistant layer 3 and a low temperature resistant sheath 4, the water blocking belting layer is formed by processing materials such as polyester non-woven fabrics, adhesives and high-speed expansion high polymer water-absorbent resins, the fire-resistant layer 3 is formed by extruding crosslinked polyethylene, and the low temperature resistant sheath 4 is made of polyether polyurethane; a bearing piece along the length direction of the wire cores 1 is arranged at the axis of a cylinder formed by enclosing the wire cores 1, the bearing piece comprises a flexible body 5 with a regular polygon cross section and a steel wire rope 6 arranged at the axis of the flexible body 5, the flexible body 5 is preferably silicon rubber, the steel wire rope 6 is coaxial with the low temperature resistant sheath 4 and is arranged along the length direction of the low temperature resistant sheath, and the outer peripheral wall of the cambered surface of the wire cores 1 is abutted against the side edge of the plane of the flexible body 5; a plurality of buffer chambers 7 which are in one-to-one correspondence with the plurality of wire cores 1 are formed in the flexible body 5, the buffer chambers 7 are arranged along the length direction of the wire cores 1, the cross sections of the buffer chambers 7 are crescent, and the circle center of the arc surface cavity wall of each buffer chamber 7 deviates from the steel wire rope 6.
Low temperature resistant sheath 4 has stronger cold resistance under outdoor low temperature environment, even still can effectively protect its inside a plurality of sinle silks 1 under the circumstances of lower temperature, when low temperature resistant flexible cable takes place expend with heat and contract with cold when winter and summer are alternative, wire rope 6 in the carrier can play tensile protection effect to a plurality of sinle silks 1, and flexible body 5 then plays good bearing effect to the bending of a plurality of sinle silks 1, in order to avoid sinle silks 1 excessively buckle, make whole low temperature resistant flexible cable still have better pliability even in chilly winter, the bending resistance and the tensile resistance of its inside sinle silk 1 of low temperature resistant flexible cable under outdoor adverse circumstances have been promoted, more stable during the transmission of electric power, long service life
When sinle silk 1 excessively bends or suffers external force and assaults, sinle silk 1 kink extrusion flexible body 5 is equipped with one side of cushion chamber 7, flexible body 5 takes place to deform in cushion chamber 7 department and can provide certain buffering for sinle silk 1, make sinle silk 1 be unlikely to excessively to be buckled, the flexibility of low temperature resistant flexible cable has further been improved, and the cross-section adaptation of crescent cushion chamber 7 and sinle silk 1, make sinle silk 1 can imbed in the deformation position of flexible body 5 completely when excessively buckling or suffering the impact, in order to avoid this sinle silk 1 to take place the skew to cause the extrusion to sinle silk 1 that closes on, further guard action has been played sinle silk 1.
Referring to fig. 1, be provided with the connecting piece between sinle silk 1 and the flexible body 5, the connecting piece includes the inserted block 8 of interval rigid coupling on sinle silk 1 periphery wall, and the one end that inserted block 8 kept away from sinle silk 1 extends to in the cushion chamber 7. The inserted block 8 that the interval was laid on sinle silk 1 is connected sinle silk 1 and flexible body 5 for sinle silk 1 can buckle deformation transmission to flexible body 5 the very first time when taking place to buckle on, makes flexible body 5 can provide effective bearing for a plurality of sinle silks 1 constantly, is showing the pliability that has improved low temperature resistant flexible cable.
Referring to fig. 1, be provided with between two adjacent sinle silks 1 and follow sinle silk 1 length direction's enhancement rope 9, it is preferable rope made of hemp to strengthen rope 9, and the common cladding of a plurality of enhancement rope 9 and a plurality of sinle silk 1 periphery wall has weaving layer 10, and weaving layer 10 is preferable the cotton-flax woven mesh, and weaving layer 10 sets up at the band layer 2 inboardly that blocks water, blocks water and is provided with shielding layer 11 between band layer 2 and the flame retardant coating 3, and shielding layer 11 is woven for the galvanized copper wire and is formed.
The reinforcing rope 9 further improves the overall tensile resistance of the low-temperature-resistant flexible cable, and has certain bending resistance, so that the low-temperature-resistant flexible cable erected in the air has stronger mechanical property; the weaving layer 10 carries out the cladding design to a plurality of reinforcing ropes 9 and a plurality of sinle silk 1 on the one hand, still can tie up a plurality of reinforcing ropes 9 and a plurality of sinle silk 1 simultaneously and tightly in order to reduce its occupation space, reduces low temperature resistant flexible cable's cross-sectional area as far as possible, and shielding layer 11 then effectively shields outside electromagnetic field to transmission signal receives the interference in the low temperature resistant flexible cable.
The implementation principle of the low temperature resistant flexible cable in the embodiment of the application is as follows: low temperature resistant sheath 4 has stronger cold resistance performance under outdoor low temperature environment, even also can still effectively protect its inside a plurality of sinle silks 1 under the circumstances of lower temperature, when low temperature resistant flexible cable takes place expend with heat and contract with cold when winter and summer are alternative, wire rope 6 in the carrier can play the tensile protection effect to a plurality of sinle silks 1, and flexible body 5 then plays good bearing effect to the bending of a plurality of sinle silks 1, in order to avoid sinle silks 1 excessively buckle, make whole low temperature resistant flexible cable even still have better pliability in chilly winter, the bending resistance and the tensile resistance performance of its inside sinle silk 1 of low temperature resistant flexible cable under outdoor adverse circumstances have been promoted, more stable during the transmission of electric power, long service life.
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 (8)
1. The utility model provides a low temperature resistant flexible cable, includes a plurality of sinle silk (1), and is a plurality of sinle silk (1) periphery wall has wrapping in proper order jointly and blocks water band layer (2), flame retardant coating (3) and low temperature resistant sheath (4), its characterized in that: a plurality of drum axis department that sinle silk (1) enclose to close formation is provided with the edge sinle silk (1) length direction's the carrier that holds, it includes that transversal personally submits regular polygon's flexible body (5) and sets up to hold carrier wire rope (6) of flexible body (5) axle center department, wire rope (6) with low temperature resistant sheath (4) are coaxial and set up along its length direction, sinle silk (1) cambered surface periphery wall with flexible body (5) plane side supports tightly.
2. The low temperature resistant flexible cable of claim 1, wherein: the flexible body (5) is provided with a plurality of buffer cavities (7) which are in one-to-one correspondence with the wire cores (1), and the buffer cavities (7) are arranged along the length direction of the wire cores (1).
3. The low temperature resistant flexible cable of claim 2, wherein: the cross section of the buffer cavity (7) is crescent, and the circle center of the arc cavity wall of the buffer cavity (7) deviates from the steel wire rope (6).
4. The low temperature resistant flexible cable of claim 3, wherein: a connecting piece is arranged between the wire core (1) and the flexible body (5).
5. The low temperature resistant flexible cable of claim 4, wherein: the connecting piece includes that the interval rigid coupling is in inserted block (8) on sinle silk (1) periphery wall, inserted block (8) are kept away from the one end of sinle silk (1) extends to in cushion chamber (7).
6. The low temperature resistant flexible cable of claim 5, wherein: and a reinforcing rope (9) along the length direction of the wire core (1) is arranged between every two adjacent wire cores (1).
7. The low temperature resistant flexible cable of claim 6, wherein: the outer peripheral walls of the plurality of reinforcing ropes (9) and the plurality of wire cores (1) are jointly wrapped with weaving layers (10), and the weaving layers (10) are arranged on the inner side of the water blocking wrapping tape layer (2).
8. The low temperature resistant flexible cable of claim 1, wherein: a shielding layer (11) is arranged between the water blocking belting layer (2) and the fire-resistant layer (3), and the shielding layer (11) is formed by weaving galvanized copper wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021078365.3U CN212084705U (en) | 2020-06-15 | 2020-06-15 | Low temperature resistant flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021078365.3U CN212084705U (en) | 2020-06-15 | 2020-06-15 | Low temperature resistant flexible cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212084705U true CN212084705U (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021078365.3U Active CN212084705U (en) | 2020-06-15 | 2020-06-15 | Low temperature resistant flexible cable |
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| Country | Link |
|---|---|
| CN (1) | CN212084705U (en) |
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2020
- 2020-06-15 CN CN202021078365.3U patent/CN212084705U/en active Active
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