CN212276842U - Crosslinked polyethylene insulated power cable - Google Patents
Crosslinked polyethylene insulated power cable Download PDFInfo
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- CN212276842U CN212276842U CN202021279942.5U CN202021279942U CN212276842U CN 212276842 U CN212276842 U CN 212276842U CN 202021279942 U CN202021279942 U CN 202021279942U CN 212276842 U CN212276842 U CN 212276842U
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- polyethylene insulated
- crosslinked polyethylene
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Abstract
The utility model discloses a crosslinked polyethylene insulated power cable relates to power cable technical field, when receiving external force extrusion to current the most polyethylene insulated cable, causes the damage of cable easily, and when needing to maintain and change after the crosslinked polyethylene insulated cable breaks down, change comparatively loaded down with trivial details or the comparatively high problem of cost of changing, the following scheme is put forward now, including first cable and second cable, the first cable and the second cable outside all are equipped with wear-resisting overcoat, fixedly connected with wire armor on the inside wall of wear-resisting overcoat, and fixedly connected with flame retardant coating on the inside wall of wire armor. The utility model is simple in operation, convenient to use not only make polyethylene insulated cable receive external force when extrudeing, are difficult for causing the damage of cable, when needing the maintenance to change after the cross-linked polyethylene insulated cable breaks down moreover, change more simple and conveniently, reduce cost of maintenance.
Description
Technical Field
The utility model relates to a power cable technical field especially relates to an insulating power cable of crosslinked polyethylene.
Background
The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and river-crossing and sea-underwater power transmission lines, is a crosslinked polyethylene insulated cable suitable for the fields of power distribution networks and the like, and has the advantages that a PVC insulated cable cannot match with the cable. The cross-linked polyethylene insulated cable has the advantages of simple structure, light weight, good heat resistance, strong load capacity, no melting, chemical corrosion resistance and high mechanical strength, and the cross-linked polyethylene insulated cable utilizes a chemical method or a physical method to convert insulated polyethylene molecules of the cable from a linear molecular structure into a main body reticular molecular structure, namely thermoplastic polyethylene is converted into thermosetting cross-linked polyethylene.
In the prior art, when most crosslinked polyethylene insulated cables are subjected to external force, cable cores in the crosslinked polyethylene insulated cables are easily extruded, the cables are easily damaged, the maintenance cost is improved, and when the crosslinked polyethylene insulated cables are required to be replaced after faults occur, the general cable replacement is more complicated or the replacement cost is higher, so that the crosslinked polyethylene insulated power cable is designed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of crosslinked polyethylene insulated power cable has solved when current most polyethylene insulated cable receives external force extrusion, causes the damage of cable easily, when needing to maintain and change after the crosslinked polyethylene insulated cable breaks down, changes comparatively loaded down with trivial details or the comparatively high problem of cost of changing moreover.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an insulating power cable of crosslinked polyethylene, includes first cable and second cable, the first cable and the second cable outside all are equipped with wear-resisting overcoat, fixedly connected with wire armor on the inside wall of wear-resisting overcoat, and fixedly connected with flame retardant coating on the inside wall of wire armor, fixed bonding has the inner protective layer on the inside wall of flame retardant coating, the inside cylindric cavity of having seted up of inner protective layer, and the cavity internal fixation is equipped with the cable core, a plurality of elastic mechanism of fixedly connected with between cable core and the inner protective layer, and the one end fixedly connected with connecting block that the cable core was kept away from to elastic mechanism, the other end of connecting block is connected with the inner wall of inner protective layer, be connected with coupling mechanism between first cable and the second cable.
Preferably, the cable core comprises a cylindrical copper core, a bundling ring is sleeved on the outer side of the cylindrical copper core, a Kevlar fiber sleeve is fixedly sleeved on the outer side of the bundling ring, a fireproof cotton layer is fixedly sleeved on the outer side of the Kevlar fiber sleeve, and a cross-linked polyethylene sleeve is fixedly connected to the outer side of the fireproof cotton layer.
Preferably, the elastic mechanism comprises a first limiting rod, a second limiting rod is connected in the inner cavity of the first limiting rod in a sliding mode, a spring is arranged between the first limiting rod and the second limiting rod, one end of the spring is connected with the bottom end of the inner cavity of the first limiting rod, and the other end of the spring is connected with the bottom end of the second limiting rod.
Preferably, the connecting mechanism comprises a connecting sleeve, grooves are formed in the two ends of the connecting sleeve, a conductive block is fixedly mounted in the middle of the connecting sleeve, connecting notches are formed in the middle of the two ends of the conductive block and are communicated with the two grooves, locking mechanisms are arranged on the outer sides of the two ends of the connecting sleeve, and sealing rings are connected to the outer sides of the two ends of the connecting sleeve.
Preferably, the locking mechanism comprises a threaded rod, a threaded hole is formed in the outer side wall of the connecting sleeve, the threaded rod penetrates through the threaded hole to extend into the groove, and the threaded rod is rotatably connected with the arc-shaped block.
Preferably, the inner protective layer contains fireproof cotton, and the Kevlar fiber sleeve contains Kevlar fiber and flame-retardant nylon yarn.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in when certain section damage of cable department need be changed, open locking mechanism, extract the cable of damage, rethread locking mechanism locks cable and coupling mechanism behind the new cable replacement, changes more simple and conveniently, reduces cost of maintenance.
2. The utility model discloses a flexibility that can effectively improve crosslinked polyethylene insulated cable of Kevlar fibre cover and crosslinked polyethylene cover has solved the not good problem of most crosslinked polyethylene insulated cable pliability, and the fire prevention cotton layer, the high temperature resistance that can effectively improve crosslinked polyethylene insulated cable of Kevlar fibre cover, the pliability that can effectively improve crosslinked polyethylene insulated cable of Kevlar fibre cover and crosslinked polyethylene cover on the cable simultaneously.
3. The utility model discloses elastic mechanism on the well cable produces shock attenuation elasticity, protects the cable core, prolongs the life of cable, reduces cost of maintenance.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a first cable according to the present invention;
fig. 2 is a schematic sectional view of a cable core according to the present invention;
fig. 3 is a schematic front view of the cross-sectional structure of the present invention;
fig. 4 is a schematic sectional structure diagram of the elastic mechanism of the present invention;
fig. 5 is a schematic side view of the locking mechanism of the present invention.
Reference numbers in the figures: 1. a first cable; 2. a second cable; 3. a wear-resistant outer sleeve; 4. metal wire armoring; 5. a fire barrier layer; 6. an inner protective layer; 7. a cable core; 71. a cylindrical copper core; 72. bundling a ring; 73. a Kevlar fiber sleeve; 74. a fireproof cotton layer; 75. a crosslinked polyethylene sleeve; 8. an elastic mechanism; 81. a first limit rod; 82. a second limiting rod; 83. a spring; 9. a connecting mechanism; 91. a connecting sleeve; 92. a conductive block; 93. a locking mechanism; 931. a threaded rod; 932. an arc-shaped block; 94. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-5, a crosslinked polyethylene insulated power cable, including first cable 1 and second cable 2, first cable 1 and the 2 outside of second cable all are equipped with wear-resisting overcoat 3, fixedly connected with wire armor 4 on the inside wall of wear-resisting overcoat 3, and fixedly connected with flame retardant coating 5 on the inside wall of wire armor 4, fixedly bond on the inside wall of flame retardant coating 5 has inner protective layer 6, the cylindric cavity has been seted up to inner protective layer 6 inside, and the cavity internal fixation is equipped with cable core 7, a plurality of elastic mechanism 8 of fixedly connected with between cable core 7 and the inner protective layer 6, and elastic mechanism 8 keeps away from the one end fixedly connected with connecting block of cable core 7, the other end of connecting block is connected with the inner wall of inner protective layer 6, be connected with coupling mechanism 9 between first cable 1 and the second cable 2.
The cable core 7 comprises a cylindrical copper core 71, a bundling ring 72 is sleeved on the outer side of the cylindrical copper core 71, a Kevlar fiber sleeve 73 is fixedly sleeved on the outer side of the bundling ring 72, a fireproof cotton layer 74 is fixedly sleeved on the outer side of the Kevlar fiber sleeve 73, a crosslinked polyethylene sleeve 75 is fixedly connected to the outer side of the fireproof cotton layer 74, the flexibility of the crosslinked polyethylene insulated cable can be effectively improved through the crosslinked polyethylene sleeve 75, and the high temperature resistance of the crosslinked polyethylene insulated cable can be effectively improved through the fireproof cotton layer 74.
The elastic mechanism 8 comprises a first limiting rod 81, a second limiting rod 82 is connected to an inner cavity of the first limiting rod 81 in a sliding mode, a spring 83 is arranged between the first limiting rod 81 and the second limiting rod 82, one end of the spring 83 is connected with the bottom end of the inner cavity of the first limiting rod 81, the other end of the spring 83 is connected with the bottom end of the second limiting rod 82, and when the elastic mechanism 8 is extruded, the elastic mechanism 8 generates damping elastic force, the cable core 7 is protected, and the service life of the cable is prolonged.
The working principle is as follows: because the wear-resistant outer sleeve 3 is arranged outside the cable, the wear resistance of the crosslinked polyethylene insulated cable is improved, the service life of the cable is prolonged, the fire-proof layer 5 arranged on the insulated cable, the fireproof cotton layer 74 arranged outside the cable core 7 and the Kevlar fiber sleeve 73 can effectively improve the high temperature resistance of the crosslinked polyethylene insulated cable, meanwhile, the flexibility of the crosslinked polyethylene insulated cable can be effectively improved by the Kevlar fiber sleeve 73 and the crosslinked polyethylene sleeve 75 on the cable, the problem that most crosslinked polyethylene insulated cables are poor in flexibility is solved, the flexibility of the cable is improved by utilizing the excellent fire-proof high temperature resistance and the tensile resistance of the Kevlar fiber, the overall strength of the cable main body is improved, the metal wire armor 4 can effectively shield external electromagnetic interference and improve the strength of the cable, when the cable is extruded, the elastic mechanism 8 on the cable generates damping elasticity to protect the cable core 7 and prolong the service life of the cable, when a certain section of the cable needs to be replaced due to damage, the threaded rod 931 is rotated to separate the locking mechanism 93 from the cable core 7, the damaged cable is pulled out, the cable core 7 and the cylindrical copper core 71 of a new cable are inserted into the connecting mechanism, the cable core 7 and the copper core are respectively inserted into the groove and the connecting groove, one end of the copper core is tightly connected with the bottom end of the connecting groove, and then the cable and the connecting mechanism 9 are locked through the locking mechanism 93.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A crosslinked polyethylene insulated power cable comprises a first cable (1) and a second cable (2), and is characterized in that wear-resistant jackets (3) are arranged on the outer sides of the first cable (1) and the second cable (2), a metal wire armor (4) is fixedly connected to the inner side wall of each wear-resistant jacket (3), a fireproof layer (5) is fixedly connected to the inner side wall of each metal wire armor (4), an inner protective layer (6) is fixedly bonded to the inner side wall of each fireproof layer (5), a cylindrical cavity is formed in each inner protective layer (6), a cable core (7) is fixedly arranged in each cavity, a plurality of elastic mechanisms (8) are fixedly connected between each cable core (7) and each inner protective layer (6), a connecting block is fixedly connected to one end, far away from each cable core (7), of each elastic mechanism (8), and the other end of each connecting block is connected with the inner wall of each inner protective layer (6), and a connecting mechanism (9) is connected between the first cable (1) and the second cable (2).
2. The insulated power cable of claim 1, wherein the cable core (7) comprises a cylindrical copper core (71), a bundling ring (72) is sleeved outside the cylindrical copper core (71), a Kevlar fiber sleeve (73) is fixedly sleeved outside the bundling ring (72), a fireproof cotton layer (74) is fixedly sleeved outside the Kevlar fiber sleeve (73), and a crosslinked polyethylene sleeve (75) is fixedly connected outside the fireproof cotton layer (74).
3. The insulated power cable of claim 1, wherein the elastic mechanism (8) comprises a first limiting rod (81), a second limiting rod (82) is slidably connected in an inner cavity of the first limiting rod (81), a spring (83) is arranged between the first limiting rod (81) and the second limiting rod (82), one end of the spring (83) is connected with the bottom end of the inner cavity of the first limiting rod (81), and the other end of the spring (83) is connected with the bottom end of the second limiting rod (82).
4. The crosslinked polyethylene insulated power cable according to claim 1, wherein the connecting mechanism (9) comprises a connecting sleeve (91), both ends of the connecting sleeve (91) are provided with grooves, a conductive block (92) is fixedly mounted in the middle of the connecting sleeve (91), both ends of the conductive block (92) are provided with connecting notches, the connecting notches are communicated with the two grooves, locking mechanisms (93) are arranged on the outer sides of both ends of the connecting sleeve (91), and sealing rings (94) are connected to the outer sides of both ends of the connecting sleeve (91).
5. A cross-linked polyethylene insulated power cable according to claim 4, characterized in that the locking mechanism (93) comprises a threaded rod (931) and the outer side wall of the connection sleeve (91) is provided with a threaded hole, the threaded rod (931) extends to the inside of the groove through the threaded hole and is rotatably connected with an arc-shaped block (932).
6. A crosslinked polyethylene insulated power cable according to claim 1, characterized in that the inner protective layer (6) comprises fire proof cotton and the kevlar fiber sheath (73) comprises kevlar fiber and flame retardant nylon filaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021279942.5U CN212276842U (en) | 2020-07-04 | 2020-07-04 | Crosslinked polyethylene insulated power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021279942.5U CN212276842U (en) | 2020-07-04 | 2020-07-04 | Crosslinked polyethylene insulated power cable |
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| CN212276842U true CN212276842U (en) | 2021-01-01 |
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| CN202021279942.5U Active CN212276842U (en) | 2020-07-04 | 2020-07-04 | Crosslinked polyethylene insulated power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116705395A (en) * | 2023-08-07 | 2023-09-05 | 潮源线缆有限公司 | Fire-resistant aluminum alloy power cable |
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2020
- 2020-07-04 CN CN202021279942.5U patent/CN212276842U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116705395A (en) * | 2023-08-07 | 2023-09-05 | 潮源线缆有限公司 | Fire-resistant aluminum alloy power cable |
| CN116705395B (en) * | 2023-08-07 | 2023-10-20 | 潮源线缆有限公司 | Fire-resistant aluminum alloy power cable |
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