CN215577807U - Butyronitrile insulation and sheath power cable - Google Patents
Butyronitrile insulation and sheath power cable Download PDFInfo
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- CN215577807U CN215577807U CN202121865554.XU CN202121865554U CN215577807U CN 215577807 U CN215577807 U CN 215577807U CN 202121865554 U CN202121865554 U CN 202121865554U CN 215577807 U CN215577807 U CN 215577807U
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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
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Abstract
The utility model discloses a butyronitrile insulated and sheathed power cable which comprises a cable core, and a belting layer, a buffering outer layer, a water-blocking layer, a flame-retardant layer, a tensile layer and a sheath layer which are sequentially coated outside the cable core; the cable core comprises a compression-resistant core, four wire cores and a pressure-bearing assembly, wherein the four wire cores are distributed in a rectangular shape and are respectively arranged on the periphery of the outer side of the compression-resistant core, an interval is arranged between every two adjacent wire cores, the pressure-bearing assembly comprises a pressure-bearing transverse plate arranged on the outer side of every two adjacent wire cores and a supporting longitudinal edge arranged in the interval between every two adjacent wire cores along the radial direction of the cable core, a first compression-resistant arc plate is arranged on the outer side of the pressure-bearing transverse plate, a second compression-resistant arc plate is arranged on the outer side between every two adjacent first compression-resistant arc plates, and a buffering inner layer is arranged on the outermost layer of each wire core; the section of the circumference of the buffer outer layer is in a wave shape, and first tensile cores are arranged between the buffer outer layer and the wrapping belt layer and between the buffer outer layer and the water-blocking layer. The utility model aims to solve the problem that the compression resistance and the tensile resistance of the existing power cable are insufficient.
Description
Technical Field
The utility model relates to the technical field of power cables, in particular to a butyronitrile insulated and sheathed power cable.
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 power transmission lines under river-crossing seawater, and has a gradually increasing proportion in the power line. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.
Among the prior art, power cable's compressive property is relatively weak, power cable often can receive external pressure at the in-process of laying and work, at this moment, power cable appears flattening easily, the damage, cracked phenomenon, current power cable's tensile strength also exists not enoughly, the inside sheath structure of power cable often does not all possess the pull resistance, when power cable received the power of dragging, damage, cracked phenomenon also appear easily in inside sinle silk and the outer sheath structure of sinle silk, thereby power cable's life is short.
Aiming at the technical problems, the utility model discloses a butyronitrile insulated and sheathed power cable which has the advantages of improving the compression resistance and the tensile property of the power cable, prolonging the service life of the power cable and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a butyronitrile insulated and sheathed power cable to solve the technical problems that the compression resistance and the tensile resistance of the power cable are insufficient, the service life of the power cable is short and the like in the prior art.
The utility model is realized by the following technical scheme: the utility model discloses a butyronitrile insulated and sheathed power cable which comprises a cable core, and a belting layer, a buffering outer layer, a water-blocking layer, a flame-retardant layer, a tensile layer and a sheath layer which are sequentially coated outside the cable core; the cable core comprises a pressure-resistant core, four wire cores and a pressure-bearing assembly, wherein the four wire cores are distributed in a rectangular shape and are respectively arranged on the periphery of the outer side of the pressure-resistant core, a space is also arranged between every two adjacent wire cores, limiting grooves are respectively arranged on the peripheral outer walls of the pressure-resistant core, the cross sections of the wire cores are rectangular, round corners are respectively arranged at four edges of the periphery of each wire core, edges at the inner ends of the wire cores are respectively clamped with the limiting grooves, the pressure-bearing assembly comprises a pressure-bearing transverse plate and supporting longitudinal edges, the pressure-bearing transverse plate is respectively arranged on the outer sides of the two adjacent wire cores, the supporting longitudinal edges are arranged in the space between the two adjacent wire cores along the radial direction of the cable core, the inner ends of the supporting longitudinal edges are fixedly connected with the pressure-resistant core in an inserting manner, the outer ends of the supporting longitudinal edges are fixedly connected with the inner wall of the pressure-bearing transverse plate, a first pressure-resistant arc plate with an inward arc opening is arranged on the outer side of the pressure-bearing transverse plate, two ends of the first pressure-resistant arc plate are respectively and fixedly connected with the two ends of the outer wall of the pressure-bearing transverse plate, a first buffer core is arranged between the first pressure-resistant arc plates and the pressure-bearing transverse plate, a second pressure-resistant arc plate with an inward arc opening is arranged on the outer side between two adjacent first pressure-resistant arc plates, the two ends of the opening of the second pressure-resistant arc plate are respectively fixedly connected with the outer walls of the two adjacent first pressure-resistant arc plates, the pressure-bearing assembly, the first pressure-resistant arc plates and the second pressure-resistant arc plates are made of nylon materials, the top of the outer wall of the second pressure-resistant arc plate is closely attached to the inner wall of the belting layer, a second buffer core is arranged between the second pressure-resistant arc plates and the cable core, a filling layer is arranged between the first pressure-resistant arc plates and the belting layer, the cable core comprises a copper conductor, an insulating layer and a buffer inner layer which are sequentially coated outside the copper conductor, the insulating layer and the sheath layer are both made of butyronitrile polyvinyl chloride materials, and the buffer inner layer, the first buffer core, the second buffer core and the buffer outer layer are all made of TPU elastomer materials; the cross section of the circumference of the buffering outer layer is in a wave shape, containing grooves distributed at intervals are formed between the buffering outer layer and the wrapping layer and between the buffering outer layer and the water-resistant layer, and first tensile cores are arranged in the containing grooves.
Preferably, in order to improve the connection strength between the supporting longitudinal edges and the pressure-bearing transverse plate, the outer end parts of the supporting longitudinal edges are in a trapezoidal shape.
Preferably, in order to improve the buffering effect on the external pressure, the inside of the first buffer core and the inside of the second buffer core are both provided with buffer holes.
Preferably, in order to improve the buffering effect on the external pressure, second tensile cores are arranged inside the buffering inner layer at intervals, and the first tensile cores and the second tensile cores are aramid fiber ropes.
Preferably, in order to improve the compactness of the internal structure of the power cable and further improve the structural strength of the power cable, the filling layer is filled by polypropylene reticular tearing fiber ropes.
Preferably, in order to improve the waterproof performance of the power cable, the waterproof layer is formed by wrapping a waterproof tape.
Preferably, in order to improve the flame retardant performance of the power cable, the flame retardant layer is woven from quartz fibers. The quartz fiber is made of high-purity silicon dioxide and natural quartz crystal, has excellent mechanical property and high tensile strength, and can resist high temperature of more than 1000 ℃ for a long time.
Preferably, in order to improve the tensile property of the power cable, the tensile layer is formed by weaving aramid fibers.
The utility model has the following advantages:
(1) according to the utility model, the wire core is positioned between two adjacent pressure-bearing assemblies at the periphery of the pressure-resistant core, when the power cable is subjected to external pressure, the pressure-bearing assemblies and the pressure-resistant core can bear pressure well, the arrangement of the first pressure-resistant arc plate and the second pressure-resistant arc plate further improves the pressure-bearing strength, reduces the external force acting on the wire core, and in addition, the inner layer and the first buffer core are buffered. The arrangement of the second buffer core and the buffer outer layer can buffer the external pressure, further reduce the external force and improve the protection effect on the wire core;
(2) according to the utility model, the section of the circumference of the buffer outer layer is in a wave shape, the accommodating grooves distributed at intervals are formed between the buffer outer layer and the wrapping belt layer and between the buffer outer layer and the water-blocking layer, the first tensile cores are arranged in the accommodating grooves, the second tensile cores are arranged at intervals inside the buffer inner layer, and the tensile layer is arranged between the flame-retardant layer and the sheath layer, so that the tensile property of the power cable is improved, and the service life of the power cable is prolonged.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a sectional view of the connection structure of the pressure resisting core and the pressure bearing assembly.
In the figure: 1. a cable core; 11. a compression resistant core; 111. a limiting groove; 12. a wire core; 121. a copper conductor; 122. an insulating layer; 123. a buffer inner layer; 13. a pressure-bearing assembly; 131. a pressure-bearing transverse plate; 132. supporting longitudinal edges; 2. a belting layer; 3. a buffer outer layer; 4. a water resistant layer; 5. a flame retardant layer; 6. a tensile layer; 7. a sheath layer; 8. a first compression-resistant arc plate; 9. a first buffer core; 10. a second anti-pressure arc plate; 100. a second buffer core; 110. a buffer hole; 120. a filling layer; 130. a containing groove; 140. a first tensile core; 150. a second tensile core.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
Embodiment 1 discloses a butyronitrile insulated and sheathed power cable, which comprises a cable core 1, and a belting layer 2, a buffer outer layer 3, a water-blocking layer 4, a flame-retardant layer 5, a tensile layer 6 and a sheath layer 7 which are sequentially coated outside the cable core 1, wherein the water-blocking layer 4 is formed by wrapping a water-blocking tape, the flame-retardant layer 5 is formed by weaving quartz fibers, and the tensile layer 6 is formed by weaving aramid fibers;
as shown in fig. 1 and 2, the cable core 1 includes a pressure-resistant core 11, four cable cores 12 and a pressure-bearing assembly 13, the four cable cores 12 are distributed in a rectangular shape and are respectively disposed around the outer side of the pressure-resistant core 11, a space is further disposed between two adjacent cable cores 12, a limiting groove 111 is respectively disposed on the outer wall of the periphery of the pressure-resistant core 11, the cross sections of the cable cores 12 are "rectangular", round corners are disposed on four edges of the periphery of the cable cores 12, edges of the inner ends of the cable cores 12 are respectively engaged with the limiting groove 111, the pressure-bearing assembly 13 includes a pressure-bearing transverse plate 131 and a support longitudinal rib 132, the pressure-bearing transverse plate 131 is respectively disposed outside the two adjacent cable cores 12, the support longitudinal rib 132 is disposed in the space between the two adjacent cable cores 12 along the radial direction of the cable core 1, the inner ends of the support longitudinal rib 132 are fixedly inserted into the pressure-resistant core 11, the outer ends of the support longitudinal rib 132 are fixedly connected with the inner wall of the pressure-bearing transverse plate 131, specifically, the outer end of the supporting longitudinal rib 132 is "trapezoidal", the outer side of the pressure-bearing transverse plate 131 is provided with a first pressure-resisting arc plate 8 with an inward arc opening, two ends of the opening of the first pressure-resisting arc plate 8 are respectively fixedly connected with two ends of the outer wall of the pressure-bearing transverse plate 131, a first buffer core 9 is arranged between the first pressure-resisting arc plate 8 and the pressure-bearing transverse plate 131, the outer side between two adjacent first pressure-resisting arc plates 8 is provided with a second pressure-resisting arc plate 10 with an inward arc opening, two ends of the opening of the second pressure-resisting arc plate 10 are respectively fixedly connected with the outer walls of two adjacent first pressure-resisting arc plates 8, the pressure-bearing assembly 13, the first pressure-resisting arc plates 8 and the second pressure-resisting arc plates 10 are all made of nylon material, the top of the outer wall of the second pressure-resisting arc plate 10 is closely attached to the inner wall of the belting layer 2, a second buffer core 100 is arranged between the second pressure-resisting arc plate 10 and the wire core 12, buffer holes 110 are arranged inside of the first buffer core 9 and inside of the second buffer core 100, a filling layer 120 is arranged between the first pressure-resistant arc plate 8 and the belting layer 2, the filling layer 120 is formed by filling polypropylene reticular tearing fiber ropes, the wire core 12 comprises a copper conductor 121, an insulating layer 122 and a buffer inner layer 123 which are sequentially coated outside the copper conductor 121, the insulating layer 122 and the sheath layer 7 are both made of butyronitrile polyvinyl chloride materials, and the buffer inner layer 123, the first buffer core 9, the second buffer core 100 and the buffer outer layer 3 are all made of TPU elastomer materials;
as shown in fig. 1, the cross section of the circumference of the outer buffer layer 3 is "wavy", the accommodating grooves 130 are formed at intervals between the outer buffer layer 3 and the belting layer 2 and between the outer buffer layer 3 and the water-blocking layer 4, the first tensile cores 140 are arranged in the accommodating grooves 130, the second tensile cores 150 are arranged in the inner buffer layer 123 at intervals, and the first tensile cores 140 and the second tensile cores 150 are aramid fiber ropes.
The principle of the utility model is as follows: in the utility model, a compression-resistant core 11 is arranged inside a cable core 1, four wire cores 12 are distributed in a rectangular shape and are respectively arranged on the periphery of the outer side of the compression-resistant core 11, a space is also arranged between every two adjacent wire cores 12, specifically, limiting grooves 111 are respectively arranged on the peripheral outer walls of the compression-resistant core 11, the cross sections of the wire cores 12 are rectangular, round corners are respectively arranged on the four edges of the periphery of each wire core 12, the edges of the inner ends of the wire cores 12 are respectively clamped with the limiting grooves 111, a pressure-bearing assembly 13 comprises a pressure-bearing transverse plate 131 and supporting longitudinal ribs 132, the pressure-bearing transverse plate 131 is respectively arranged on the outer sides of the two adjacent wire cores 12, the supporting longitudinal ribs 132 are arranged in the space between the two adjacent wire cores 12 along the radial direction of the cable core 1, the inner ends of the supporting longitudinal ribs 132 are fixedly connected with the compression-resistant core 11, the outer ends of the supporting longitudinal ribs 132 are fixedly connected with the inner wall of the pressure-bearing transverse plate 131, the compression-resistant core 11 and the pressure-bearing assembly 13 are high in mechanical strength, the nylon material with better toughness is made, thereby when the power cable is subjected to external force, the pressure bearing assembly 13 and the pressure-resistant core 11 can be well matched for bearing pressure, the force acting on the wire core 12 is reduced, the outermost layer of the wire core 12 is provided with the TPU elastomer material to be made into the buffer inner layer 123, the buffer effect is good, the external force acting on the wire core 12 can be buffered, the wire core can be better protected, the first tensile arc plate 8 arranged on the outer side of the pressure-bearing transverse plate 131 and the second tensile arc plate 10 arranged on the outer side between two adjacent first pressure-resistant arc plates 8 can further improve the pressure-bearing strength, the first buffer core 9 arranged on the inner side of the first pressure-resistant arc plate 8 and the second buffer core 100 arranged on the inner side of the second pressure-resistant arc plate 10 can also well buffer the external force, wherein, the buffer holes 110 arranged inside the first buffer core 9 and inside the second buffer core 100 can further improve the buffer effect, finally, the buffer outer layer 3 is arranged outside the cable core 1, the section of the circumference of the buffer outer layer 3 is in a wave shape, when the power cable bears external force, the buffer outer layer 3 is firstly pressed, so that the buffer outer layer 3 is deformed to buffer the external force, and the external force acting on the cable core 1 is reduced, therefore, the internal structure of the power cable is improved, the compression resistance of the power cable is obviously improved, the power cable can bear larger external force without the phenomena of flattening, breakage and fracture, and the service life of the power cable is prolonged; because the cross section of the circumference of the buffer outer layer 3 is in a wave shape, the accommodating grooves 130 which are distributed at intervals are formed between the buffer outer layer 3 and the belting layer 2 and between the buffer outer layer 3 and the water-blocking layer 4, the first tensile cores 140 are arranged in the accommodating grooves 130, the arrangement of the first tensile cores 140 can make up the defects of the buffer outer layer 3 in the tensile property, the second tensile cores 150 are embedded in the buffer inner layer 123 at intervals, the defects of the buffer inner layer 123 in the tensile property are made up, and the tensile layer 6 is also arranged between the flame-retardant layer 5 and the sheath layer 7, so that the tensile property of the power cable is obviously improved.
Claims (8)
1. A butyronitrile insulated and sheathed power cable is characterized by comprising a cable core, and a belting layer, a buffering outer layer, a water-blocking layer, a flame-retardant layer, a tensile layer and a sheath layer which are sequentially coated outside the cable core;
the cable core comprises a pressure-resistant core, four wire cores and a pressure-bearing assembly, wherein the four wire cores are distributed in a rectangular shape and are respectively arranged on the periphery of the outer side of the pressure-resistant core, intervals are arranged between every two adjacent wire cores, limiting grooves are respectively arranged on the peripheral outer walls of the pressure-resistant core, the cross sections of the wire cores are rectangular, round corners are respectively arranged at the four edges of the periphery of each wire core, the edges at the inner ends of the wire cores are respectively clamped with the limiting grooves, the pressure-bearing assembly comprises a pressure-bearing transverse plate and supporting longitudinal edges, the pressure-bearing transverse plates are respectively arranged on the outer sides of the two adjacent wire cores, the supporting longitudinal edges are arranged in the intervals between the two adjacent wire cores along the radial direction of the cable core, the inner ends of the supporting longitudinal edges are fixedly connected with the pressure-resistant core in an inserting manner, and the outer ends of the supporting longitudinal edges are fixedly connected with the inner wall of the pressure-bearing transverse plate, the outer side of the pressure-bearing transverse plate is provided with a first pressure-resisting arc plate with an inward arc opening, two ends of the opening of the first pressure-resisting arc plate are respectively and fixedly connected with two ends of the outer wall of the pressure-bearing transverse plate, a first buffer core is arranged between the first pressure-resisting arc plate and the pressure-bearing transverse plate, a second pressure-resisting arc plate with an inward arc opening is arranged on the outer side between two adjacent first pressure-resisting arc plates, two ends of the opening of the second pressure-resisting arc plate are respectively and fixedly connected with the outer walls of two adjacent first pressure-resisting arc plates, the pressure-bearing assembly, the first pressure-resisting arc plates and the second pressure-resisting arc plates are all made of nylon materials, the top of the outer wall of the second pressure-resisting arc plate is closely attached to the inner wall of the belting layer, a second buffer core is arranged between the second pressure-resisting arc plate and the wire core, and a filling layer is arranged between the first pressure-resisting arc plates and the belting layer, the cable core comprises a copper conductor, and an insulating layer and a buffer inner layer which are sequentially coated outside the copper conductor, wherein the insulating layer and the sheath layer are made of butyronitrile polyvinyl chloride materials, and the buffer inner layer, the first buffer core, the second buffer core and the buffer outer layer are made of TPU elastomer materials;
the cross section of the circumference of the buffer outer layer is in a wave shape, containing grooves distributed at intervals are formed between the buffer outer layer and the belting layer and between the buffer outer layer and the water-resistant layer, and first tensile cores are arranged in the containing grooves.
2. A nitrile insulated and sheathed power cable according to claim 1, characterized in that the outer ends of the longitudinal edges of the support are "trapezoidal".
3. A nitrile insulated and jacketed power cable as described in claim 1, wherein both the interior of said first buffer core and the interior of said second buffer core are provided with buffer holes.
4. The butyronitrile insulated and sheathed power cable of claim 1, wherein second tensile cores are arranged at intervals inside the buffer inner layer, and the first tensile core and the second tensile core are aramid fiber ropes.
5. A nitrile insulated and sheathed power cable according to claim 1 wherein the filler layer is filled with polypropylene mesh ripcord.
6. A butyronitrile insulated and sheathed power cable as claimed in claim 1, wherein the water-blocking layer is wrapped with a water-blocking tape.
7. A nitrile insulated and sheathed power cable according to claim 1 wherein the flame retardant layer is woven from quartz fibres.
8. A butyronitrile insulated and sheathed power cable as claimed in claim 1, wherein the tensile layer is woven from aramid fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865554.XU CN215577807U (en) | 2021-08-11 | 2021-08-11 | Butyronitrile insulation and sheath power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865554.XU CN215577807U (en) | 2021-08-11 | 2021-08-11 | Butyronitrile insulation and sheath power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215577807U true CN215577807U (en) | 2022-01-18 |
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ID=79834384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121865554.XU Active CN215577807U (en) | 2021-08-11 | 2021-08-11 | Butyronitrile insulation and sheath power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215577807U (en) |
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2021
- 2021-08-11 CN CN202121865554.XU patent/CN215577807U/en active Active
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