CN111785428A - Power cable and pipeline for same - Google Patents

Power cable and pipeline for same Download PDF

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Publication number
CN111785428A
CN111785428A CN202010787413.4A CN202010787413A CN111785428A CN 111785428 A CN111785428 A CN 111785428A CN 202010787413 A CN202010787413 A CN 202010787413A CN 111785428 A CN111785428 A CN 111785428A
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CN
China
Prior art keywords
wall body
cavity
spliced
power transmission
face
Prior art date
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Withdrawn
Application number
CN202010787413.4A
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Chinese (zh)
Inventor
金迁
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Changshu Liangfang Intelligent Technology Co ltd
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Changshu Liangfang Intelligent Technology Co ltd
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Application filed by Changshu Liangfang Intelligent Technology Co ltd filed Critical Changshu Liangfang Intelligent Technology Co ltd
Priority to CN202010787413.4A priority Critical patent/CN111785428A/en
Publication of CN111785428A publication Critical patent/CN111785428A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The application belongs to the technical field of cables and pipelines, and particularly relates to a power cable which is provided with a pipeline body and first to fifth power transmission bodies; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the upper wall body is spliced on the outer surface of the lower wall body in a clockwise or anticlockwise direction, the other end of the upper wall body is spliced on the inner surface of the lower wall body, and a cavity is arranged between the inner surface of the upper wall body and the outer surface of the lower wall body; the power transmission body is positioned in the cavity. The application also discloses a pipeline for the power cable. The invention has the following main beneficial effects: the structure is simpler, the cost is lower, the assembly and the disassembly are convenient, the shielding performance is better, the heat dissipation effect is better, and the placement is more stable and reliable.

Description

Power cable and pipeline for same
Technical Field
The invention belongs to the technical field of electric power, cables and pipelines, and particularly relates to a power cable and a pipeline for the power cable.
Background
In the prior art, the multi-core cable consists of a plurality of single-core insulated wires and at least one protective layer positioned outside all the insulated wires, when the plurality of single-core insulated wires are twisted, the product is more stable, the diameter is smaller, the cost is lower, but the performance of the conductor is reduced due to twisting; the diameter of the product is large when the product is placed in parallel; in addition, the protective layer is inconvenient to construct, large in outer diameter, heavy in weight and high in cost.
CN210925546U discloses a medical instrument private cable, including compound shell, set up in signal transmission line and forceful electric power transmission line in the compound shell, signal transmission line holds in anti-interference sheath, the cross-section of anti-interference sheath is crescent, and weaves by the wire that the electricity performance is good and form. Set anti-interference sheath to the shape that the cross-section is the crescent, the indent is located forceful electric power transmission line contact, can laminate rather than taking place violent friction when the cable is buckled, has prevented that the inside wearing and tearing from influencing anti-interference effect after long-term the use.
CN108242285A discloses an anti-freezing cable, including the petal shape insulation reinforcing pipe that forms by four arc skeletons concatenation, be equipped with the circular duct at insulation reinforcing pipe inside center department, evenly be connected with four insulation boards between circular duct outer wall and insulation reinforcing pipe inner wall, scribble inorganic heat absorbing material spraying layer on the insulation board surface, four insulation boards divide into four little cavitys with insulation reinforcing pipe inner chamber, be equipped with oval rubber skeleton in four little cavitys respectively, scribble the pitch coating in the outside of half hard fire-retardant polyvinyl chloride oversheath, be equipped with the nylon heat preservation at half hard fire-retardant polyvinyl chloride oversheath inner wall. According to the invention, the crescent semiconductor expansion buffer layer is arranged between each wire core and the insulation reinforcing pipe in the four small cavities, so that the internal structure of the cable is more compact, more stable and reliable, the buffer layer structure is firm, the circular plate is added with the insulation plate, the nylon insulation layer is used for insulating under the condition that the flexibility of the cable is not influenced, and the cold-proof effect is good.
The techniques disclosed in the above documents do not solve all the technical problems of the prior art.
Disclosure of Invention
In order to solve the above problems, the present invention provides a power cable and a duct for the cable, which are achieved by the following technical solutions.
A power cable has a pipe body, a first power transmission body, a second power transmission body, a third power transmission body, a fourth power transmission body, and a fifth power transmission body; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of the second wall body and the outer surface of the third wall body, a third cavity is arranged, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first power transmission body is located in the first cavity, the second power transmission body is located in the second cavity, the third power transmission body is located in the third cavity, the fourth power transmission body is located in the fourth cavity, and the fifth power transmission body is located in the fifth cavity.
The power cable is characterized in that the pipeline body is of an integrated structure.
The power cable is characterized in that the pipe body is formed by extrusion molding or blow molding.
The power cable is characterized in that the first cavity, the second cavity, the third cavity and the fourth cavity are crescent-shaped.
The power cable is characterized in that the material of the pipeline body is polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The power cable is characterized in that the first power transmission body, the second power transmission body, the third power transmission body and the fourth power transmission body are crescent-shaped.
The power cable is characterized in that the first power transmission body, the second power transmission body, the third power transmission body and the fifth power transmission body are bare conductors, and the bare conductors are conductor materials without insulating layers.
The power cable is characterized in that the first power transmission body, the second power transmission body, the third power transmission body and the fifth power transmission body are insulated wires, and each insulated wire is composed of a conductor and an insulating layer coated outside the conductor.
The above-described electric power cable, characterized in that one of the first power transmission element, the second power transmission element, the third power transmission element, and the fifth power transmission element is the above-described bare conductor, and the other is the above-described insulated conductor.
The power cable is characterized in that the outer sheath is coated outside the pipeline body.
The power cable is characterized in that the outer sheath is made of polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
A pipeline for a power cable is provided with a pipeline body, and is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of, a third cavity is arranged between the inner surface of the third wall body and the outer surface of the fourth wall body, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body.
The pipeline for the power cable is characterized in that the pipeline body is of an integrated structure.
A duct for a power cable as described above, characterised in that the duct body is formed by extrusion or blow moulding.
The pipeline for the power cable is characterized in that the first cavity, the second cavity, the third cavity and the fourth cavity are crescent-shaped.
The pipeline for the power cable is characterized in that the pipeline body is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The outermost edge of the pipeline body is arranged on the surface of the same cylinder.
A pipeline for a power cable is provided with a pipeline body, and is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of, a third cavity is arranged between the inner surface of the third wall body and the outer surface of the fourth wall body, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body;
the first wall body is a part of a circular cylinder, the first end face of the first wall body is a part of a cylindrical surface and is recessed towards the direction of the first wall body, the intersection line of the first end face and the outer surface of the first wall body is a first straight line, the intersection line of the first end face and the inner surface of the first wall body is a second straight line, the first straight line and the second straight line are in a first plane, the first plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the first end face is located is not smaller than that of a cylinder where the outer surface of the first wall body is located; the second end face of the first wall body is a part of a cylindrical surface and protrudes towards the first wall body, the intersection line of the second end face and the outer surface of the first wall body is a third straight line, the intersection line of the second end face and the inner surface of the first wall body is a fourth straight line, the third straight line and the fourth straight line are in a second plane, the second plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the second end face is located is not larger than that of a cylinder where the inner surface of the first wall body is located; the central axis and the first straight line of the first wall body are in a third plane, the central axis and the third straight line of the first wall body are in a fourth plane, the included angle between the third plane and the fourth plane is theta, the central axis and the second straight line of the first wall body are in a fifth plane, the central axis and the fourth straight line of the first wall body are in a sixth plane, the included angle between the fifth plane and the sixth plane is beta, and theta is not smaller than beta; the outer surface of the first wall body is provided with a first joint part, and the inner surface of the first wall body close to the second end surface is provided with a second joint part; the shape and size of the first wall body, the second wall body, the third wall body and the fourth wall body are the same, the pipeline body is formed in a split mode, the first end face of the first wall body is attached to the first joint portion of the second wall body, the first end face of the second wall body is attached to the first joint portion of the third wall body, the first end face of the third wall body is attached to the first joint portion of the fourth wall body, the first end face of the fourth wall body is attached to the first joint portion of the first wall body, the second end face of the first wall body is attached to the second joint portion of the fourth wall body, the second end face of the second wall body is attached to the second joint portion of the first wall body, the second end face of the third wall body is attached to the second joint portion of the second wall body, and the second end face of the fourth wall body is attached to the second joint portion of the first wall body.
A duct for a power cable as described above, characterised in that the first wall, the second wall, the third wall and the fourth wall are all formed by extrusion or blow moulding.
The pipeline for the power cable is characterized in that the first cavity, the second cavity, the third cavity and the fourth cavity are crescent-shaped.
A conduit for a power cable as described above, characterized in that the value of β is 150 and 330 degrees.
The above pipe for power cables is characterized in that the materials of the first wall body, the second wall body and the third wall body can be polypropylene, polybutylene terephthalate, low density polyethylene, medium density polyethylene, high density polyethylene, low smoke halogen-free polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU; may be the same or different.
The pipeline for the power cable is characterized in that the outermost edges of the pipeline body are arranged on the surface of the same cylinder.
An electric power cable using a conduit for an electric power cable as described above, wherein the first power conductor is provided in the first cavity, the second power conductor is provided in the second cavity, the third power conductor is provided in the third cavity, the fourth power conductor is provided in the fourth cavity, and the fifth power conductor is provided in the fifth cavity.
Further, an electric power cable as described above, wherein the power transmitting body is not all provided in the first to fifth cavities.
Still further, an electric power cable according to the above, wherein the first power transmission element, the second power transmission element, the third power transmission element, and the fifth power transmission element are all bare conductors, and the bare conductors are conductors without an insulating layer outside a conductor material.
Furthermore, the power cable is characterized in that the first power transmission unit, the second power transmission unit, the third power transmission unit and the fifth power transmission unit are insulated wires, and each insulated wire is composed of a conductor and an insulating layer coated outside the conductor.
Alternatively, an electric power cable as described above, characterized in that among the first power transmission conductor, the second power transmission conductor, the third power transmission conductor, and the fifth power transmission conductor, one part is said bare conductor, and the other part is said insulated conductor.
In the application, the fifth power transmission body can also be a stranded body of a steel wire, an iron wire, an aluminum wire, a glass fiber reinforced plastic rod, a steel stranded wire, an aluminum stranded wire or a plurality of glass fiber reinforced plastics; this integrally strengthens the tensile strength of the duct or the tensile strength of the cable.
The invention has the following main beneficial effects: the structure is simpler, the cost is lower, the assembly and the disassembly are convenient, the shielding performance is better, the heat dissipation effect is better, and the placement is more stable and reliable.
Drawings
Fig. 1 is a schematic perspective view of a dissected segment of the example 1.
Fig. 2 is an enlarged cross-sectional structure diagram of fig. 1.
Fig. 3 is a schematic perspective view of a section of the tube body used in example 1 after dissection.
Fig. 4 is an enlarged cross-sectional view of fig. 3.
Fig. 5 is a schematic perspective view of a dissected segment of the example 2.
Fig. 6 is a schematic cross-sectional structure of a pipe body used in embodiment example 3.
Fig. 7 is a cross-sectional structural view of the first wall body used in fig. 6.
Fig. 8 is a schematic structural diagram of fig. 7 with an auxiliary line added.
In order that those skilled in the art will more accurately and clearly understand and practice the present application, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: 1-pipeline body, 11-first wall body, 12-second wall body, 13-third wall body, 14-fourth wall body, 21-first power transmission body, 22-second power transmission body, 23-third power transmission body, 24-fourth power transmission body, 3-fifth power transmission body, 110-first cavity, 120-second cavity, 130-third cavity, 140-fourth cavity, 150-fifth cavity, 4-outer sheath, 111-first end face, 112-second end face, 113-first joint part, 114-second joint part.
Detailed Description
Examples 1
Referring to fig. 1 to 4, an electric power cable has a pipe body 1, a first power transmission body 21, a second power transmission body 22, a third power transmission body 23, a fourth power transmission body 24, and a fifth power transmission body 3; the pipeline body is formed by splicing a first wall body 11, a second wall body 12, a third wall body 13 and a fourth wall body 14, one end of the first wall body 11 is spliced on the outer surface of the second wall body 12, one end of the second wall body 12 is spliced on the outer surface of the third wall body 13, one end of the third wall body 13 is spliced on the outer surface of the fourth wall body 14, one end of the fourth wall body 14 is spliced on the outer surface of the first wall body 11, the other end of the first wall body 11 is spliced on the inner surface of the fourth wall body 14, the other end of the second wall body 12 is spliced on the inner surface of the first wall body 11, the other end of the third wall body 13 is spliced on the inner surface of the second wall body 12, the other end of the fourth wall body 14 is spliced on the inner surface of the third wall body 13, a first cavity 110 is arranged between the inner surface of the first wall body 11 and the outer surface of the second wall body 12, and a second cavity 120 is arranged between the inner surface of the second wall body 12 and the, a third cavity 130 is arranged between the inner surface of the third wall body 13 and the outer surface of the fourth wall body 14, a fourth cavity 140 is arranged between the inner surface of the fourth wall body 14 and the outer surface of the first wall body 11, and a fifth cavity 150 is arranged between the inner surface of the first wall body 11, the inner surface of the second wall body 12, the inner surface of the third wall body 13 and the inner surface of the fourth wall body 14; the first power transmission 21 is located in the first cavity 110, the second power transmission 22 is located in the second cavity 120, the third power transmission 23 is located in the third cavity 130, the fourth power transmission 24 is located in the fourth cavity 140, and the fifth power transmission 3 is located in the fifth cavity 150.
The power cable is characterized in that the pipeline body is of an integrated structure.
The power cable is characterized in that the pipe body is formed by extrusion molding or blow molding.
The power cable is characterized in that the first cavity, the second cavity, the third cavity and the fourth cavity are crescent-shaped.
The crescent shape mentioned above means: two non-concentric circles form a part with the same bending direction, and the enclosed area is not more than half of the area of the circle.
The power cable is characterized in that the material of the pipeline body is polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The power cable is characterized in that the first power transmission body, the second power transmission body, the third power transmission body and the fourth power transmission body are crescent-shaped.
The power cable is characterized in that the first power transmission body, the second power transmission body, the third power transmission body and the fifth power transmission body are bare conductors, and the bare conductors are conductor materials without insulating layers.
The power cable is characterized in that the first power transmission body, the second power transmission body, the third power transmission body and the fifth power transmission body are insulated wires, and each insulated wire is composed of a conductor and an insulating layer coated outside the conductor.
The above-described electric power cable, characterized in that one of the first power transmission element, the second power transmission element, the third power transmission element, and the fifth power transmission element is the above-described bare conductor, and the other is the above-described insulated conductor.
Referring to fig. 3 and 4, a duct for a power cable has a duct body 1, wherein the duct body is formed by splicing a first wall body 11, a second wall body 12, a third wall body 13, and a fourth wall body 14, one end of the first wall body 11 is spliced to an outer surface of the second wall body 12, one end of the second wall body 12 is spliced to an outer surface of the third wall body 13, one end of the third wall body 13 is spliced to an outer surface of the fourth wall body 14, one end of the fourth wall body 14 is spliced to an outer surface of the first wall body 11, the other end of the first wall body 11 is spliced to an inner surface of the fourth wall body 14, the other end of the second wall body 12 is spliced to an inner surface of the first wall body 11, the other end of the third wall body 13 is spliced to an inner surface of the second wall body 12, the other end of the fourth wall body 14 is spliced to an inner surface of the third wall body 13, and a first cavity 110 is provided between the inner surface of the first wall body 11 and the outer surface of the, a second cavity 120 is formed between the inner surface of the second wall 12 and the outer surface of the third wall 13, a third cavity 130 is formed between the inner surface of the third wall 13 and the outer surface of the fourth wall 14, a fourth cavity 140 is formed between the inner surface of the fourth wall 14 and the outer surface of the first wall 11, and a fifth cavity 150 is formed between the inner surface of the first wall 11, the inner surface of the second wall 12, the inner surface of the third wall 13 and the inner surface of the fourth wall 14.
The pipeline for the power cable is characterized in that the pipeline body is of an integrated structure.
A duct for a power cable as described above, characterised in that the duct body is formed by extrusion or blow moulding.
The pipeline for the power cable is characterized in that the first cavity, the second cavity, the third cavity and the fourth cavity are crescent-shaped.
The pipeline for the power cable is characterized in that the pipeline body is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The outermost edge of the pipeline body is arranged on the surface of the same cylinder.
EXAMPLES example 2
Referring to fig. 5 and fig. 1 to 4, a power cable is substantially the same as embodiment 1, except that: the outer sheath 4 is coated outside the pipeline body.
The power cable is characterized in that the outer sheath is made of polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
In the power cable, at least one protective layer can be arranged between the pipeline body and the outer sheath, and the protective layer is used for fire prevention, moisture prevention, pressure prevention, tensile resistance, water prevention and the like.
In the embodiment examples 1 and 2, the first cavity 110, the second cavity 120, the third cavity 130 and the fourth cavity 140 are preferably identical or similar.
EXAMPLE 3
Referring to fig. 6 to 8 and fig. 1 to 3, a duct for a power cable has a duct body 1, wherein the duct body is formed by splicing a first wall 11, a second wall 12, a third wall 13 and a fourth wall 14, one end of the first wall 11 is spliced to an outer surface of the second wall 12, one end of the second wall 12 is spliced to an outer surface of the third wall 13, one end of the third wall 13 is spliced to an outer surface of the fourth wall 14, one end of the fourth wall 14 is spliced to an outer surface of the first wall 11, the other end of the first wall 11 is spliced to an inner surface of the fourth wall 14, the other end of the second wall 12 is spliced to an inner surface of the first wall 11, the other end of the third wall 13 is spliced to an inner surface of the second wall 12, the other end of the fourth wall 14 is spliced to an inner surface of the third wall 13, a first cavity 110 is formed between the inner surface of the first wall 11 and the outer surface of the second wall 12, a second cavity 120 is arranged between the inner surface of the second wall body 12 and the outer surface of the third wall body 13, a third cavity 130 is arranged between the inner surface of the third wall body 13 and the outer surface of the fourth wall body 14, a fourth cavity 140 is arranged between the inner surface of the fourth wall body 14 and the outer surface of the first wall body 11, and a fifth cavity 150 is arranged between the inner surface of the first wall body 11, the inner surface of the second wall body 12, the inner surface of the third wall body 13 and the inner surface of the fourth wall body 14;
the first wall body 11 is a part of a circular cylinder, the first end surface 111 of the first wall body 11 is a part of a cylindrical surface and is recessed towards the direction of the first wall body, the intersection line of the first end surface 111 and the outer surface of the first wall body 11 is a first straight line, the intersection line of the first end surface 111 and the inner surface of the first wall body 11 is a second straight line, the first straight line and the second straight line are in a first plane, the first plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the first end surface 111 is located is not smaller than that of a cylinder where the outer surface of the first wall body 11 is located; the second end face 112 of the first wall body 11 is a part of a cylindrical surface and protrudes towards the first wall body, the intersection line of the second end face 112 and the outer surface of the first wall body 11 is a third straight line, the intersection line of the second end face 112 and the inner surface of the first wall body 11 is a fourth straight line, the third straight line and the fourth straight line are in a second plane, the second plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the second end face 112 is located is not larger than that of a cylinder where the inner surface of the first wall body 11 is located; the central axis and the first straight line of the first wall body are in a third plane, the central axis and the third straight line of the first wall body are in a fourth plane, the included angle between the third plane and the fourth plane is theta, the central axis and the second straight line of the first wall body are in a fifth plane, the central axis and the fourth straight line of the first wall body are in a sixth plane, the included angle between the fifth plane and the sixth plane is beta, and theta is not smaller than beta; the outer surface of the first wall body is provided with a first joint part 113, and the inner surface of the first wall body is provided with a second joint part 114 near the second end surface 112; the shape and size of the first wall body 11, the second wall body 12, the third wall body 13 and the fourth wall body 14 are the same, the pipeline body is formed by splicing, the first end face of the first wall body is attached to the first joint part of the second wall body, the first end face of the second wall body is attached to the first joint part of the third wall body, the first end face of the third wall body is attached to the first joint part of the fourth wall body, the first end face of the fourth wall body is attached to the first joint part of the first wall body, the second end face of the first wall body is attached to the second joint part of the fourth wall body, the second end face of the second wall body is attached to the second joint part of the first wall body, the second end face of the third wall body is attached to the second joint part of the second wall body, and the second end face of the fourth wall body is attached to the second joint part of the first wall body.
A duct for a power cable as described above, characterised in that the first wall, the second wall, the third wall and the fourth wall are all formed by extrusion or blow moulding.
The pipeline for the power cable is characterized in that the first cavity, the second cavity, the third cavity and the fourth cavity are crescent-shaped.
The pipeline for the power cable is characterized in that the value of beta is 150-330 degrees, the angles of beta and theta, the deviation of the first plane from the central axis of the first wall body, the deviation of the second plane from the central axis of the first wall body and the like ensure the feasibility and the stability of the split shape; and convenience and rapidity of operation.
The above pipe for power cables is characterized in that the materials of the first wall body, the second wall body and the third wall body can be polypropylene, polybutylene terephthalate, low density polyethylene, medium density polyethylene, high density polyethylene, low smoke halogen-free polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU; may be the same or different.
The above-mentioned pipeline for power cable is characterized in that the first end face and the first joint part can be bonded by glue, or magnetically attracted, or jointed by a mechanical structure; in the same way, the second end face and the second joint part can be bonded by glue, or magnetically attracted, or jointed by a mechanical structure; thus, the assembly, the disassembly and the molding are easy, and the efficiency is higher.
The pipeline for the power cable is characterized in that the outermost edges of the pipeline body are arranged on the surface of the same cylinder.
An electric power cable using a conduit for an electric power cable as described above, wherein the first power conductor is provided in the first cavity, the second power conductor is provided in the second cavity, the third power conductor is provided in the third cavity, the fourth power conductor is provided in the fourth cavity, and the fifth power conductor is provided in the fifth cavity.
Further, an electric power cable as described above, wherein the power transmitting body is not all provided in the first to fifth cavities.
Still further, an electric power cable according to the above, wherein the first power transmission element, the second power transmission element, the third power transmission element, and the fifth power transmission element are all bare conductors, and the bare conductors are conductors without an insulating layer outside a conductor material.
Furthermore, the power cable is characterized in that the first power transmission unit, the second power transmission unit, the third power transmission unit and the fifth power transmission unit are insulated wires, and each insulated wire is composed of a conductor and an insulating layer coated outside the conductor.
Alternatively, an electric power cable as described above, characterized in that among the first power transmission conductor, the second power transmission conductor, the third power transmission conductor, and the fifth power transmission conductor, one part is said bare conductor, and the other part is said insulated conductor.
In the application, the fifth power transmission body can also be a stranded body of a steel wire, an iron wire, an aluminum wire, a glass fiber reinforced plastic rod, a steel stranded wire, an aluminum stranded wire or a plurality of glass fiber reinforced plastics; this integrally strengthens the tensile strength of the duct or the tensile strength of the cable.
The cable and the pipeline can be used indoors or outdoors.
In this application, can put into extrusion molding mould with the electric unit together when extruding the pipeline, one shot forming, also can only extrude the pipeline, penetrate the electric unit when the construction, or after the construction is accomplished, penetrate again or blow in the electric unit.
In this application, if adopt the structure of separation, the electric unit can easily imbed and take out, and it is all very convenient during inspection, construction, and can conveniently change when the part damages, need not make whole cable scrap, this application simple structure, and the electric part is close with outside distance, so the radiating effect is more excellent.
In this application, can adopt sign or printing to distinguish first to fourth wall body, also can adopt different colours to distinguish, have just also reached the purpose of distinguishing inside transmission body. When the split structure is adopted for combination, different colors are particularly suitable for use.
In this application, not limited to first to fourth wall body, in fact can have a plurality of at least two, also can reach corresponding design requirement, can place other many transmission of electricity units, reach the purpose of multichannel transmission of electricity.
The cavity is not limited to be used for placing components for transmitting power, and other components can be actually placed, for example, components with light transmission performance, such as loose tubes, can be placed inside to form an optical cable; a signal wire for transmitting weak current can be arranged, and the signal wire consists of a conductor and an insulating sleeve layer coated outside the conductor, so that transmission of multiple paths of electric signals can be realized, and a signal cable is formed; and the optical-electrical composite cable can be combined to form an optical-electrical composite cable, and can simultaneously transmit electrical signals and optical signals, so that the optical-electrical composite cable has multiple purposes.
In the present application, another preferable mode of the cable is: a coaxial cable is placed in the fifth cavity, the coaxial cable is composed of a central conductor, a first insulating sleeve layer wrapping the central conductor, a shielding layer wrapping the first insulating sleeve layer in a winding manner, and a second insulating sleeve layer wrapping the shielding layer in an extrusion molding manner, a first power transmission monomer and a first power transmission monomer are attached to the inner wall of the first cavity in the first cavity, a second power transmission monomer and a second power transmission monomer are attached to the inner wall of the second cavity in the second cavity, a third power transmission monomer and a third power transmission monomer are attached to the inner wall of the third cavity in the third cavity, and a fourth power transmission monomer are attached to the inner wall of the fourth cavity in the fourth cavity. In the mode, the first to fourth power transmission units further shield and isolate external and internal signals, so that the electric signal transmission in the coaxial cable is more stable and reliable, and the interference performance is stronger.
In the application, a plurality of working procedures are omitted, and the molding is carried out at one time, so that the electric power and the manpower are saved; and simple structure, less material consumption, lighter weight and lower cost.
In this application, the parts are unanimous in the mosaic structure, and the commonality is strong, easily assembles and dismantles and easily shaping, uses in a flexible way.
The invention has the following main beneficial effects: the structure is simpler, the cost is lower, the assembly and the disassembly are convenient, the shielding performance is better, the heat dissipation effect is better, and the placement is more stable and reliable.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims (10)

1. A power cable has a pipe body, a first power transmission body, a second power transmission body, a third power transmission body, a fourth power transmission body, and a fifth power transmission body; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of the second wall body and the outer surface of the third wall body, a third cavity is arranged, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first power transmission body is positioned in the first cavity, the second power transmission body is positioned in the second cavity, the third power transmission body is positioned in the third cavity, the fourth power transmission body is positioned in the fourth cavity, and the fifth power transmission body is positioned in the fifth cavity; the pipeline body is of an integrated structure; the body of the tube is extruded or blow molded.
2. A power cable comprises a pipeline body, a first power transmission body, a second power transmission body, a third power transmission body, a fourth power transmission body and a coaxial cable; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of the second wall body and the outer surface of the third wall body, a third cavity is arranged, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first power transmission body is positioned in the first cavity, the second power transmission body is positioned in the second cavity, the third power transmission body is positioned in the third cavity, the fourth power transmission body is positioned in the fourth cavity, and the coaxial cable is positioned in the fifth cavity; the coaxial cable is composed of a central conductor, a first insulating sleeve layer coated outside the central conductor, a shielding layer wound and coated outside the first insulating sleeve layer, and a second insulating sleeve layer coated outside the shielding layer in an extrusion molding manner, wherein a first power transmission monomer is arranged in a first cavity and attached to the inner wall of the first cavity, a second power transmission monomer is arranged in a second cavity and attached to the inner wall of the second cavity, a third power transmission monomer is arranged in a third cavity and attached to the inner wall of the third cavity, and a fourth power transmission monomer is arranged in a fourth cavity and attached to the inner wall of the fourth cavity; the pipeline body is of an integrated structure; the body of the tube is extruded or blow molded.
3. A power cable has a pipe body, a first power transmission body, a second power transmission body, a third power transmission body, a fourth power transmission body, and a fifth power transmission body; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of the second wall body and the outer surface of the third wall body, a third cavity is, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first wall body is a part of a circular cylinder, the first end face of the first wall body is a part of a cylindrical surface and is recessed towards the direction of the first wall body, the intersection line of the first end face and the outer surface of the first wall body is a first straight line, the intersection line of the first end face and the inner surface of the first wall body is a second straight line, the first straight line and the second straight line are in a first plane, the first plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the first end face is located is not smaller than that of a cylinder where the outer surface of the first wall body is located; the second end face of the first wall body is a part of a cylindrical surface and protrudes towards the first wall body, the intersection line of the second end face and the outer surface of the first wall body is a third straight line, the intersection line of the second end face and the inner surface of the first wall body is a fourth straight line, the third straight line and the fourth straight line are in a second plane, the second plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the second end face is located is not larger than that of a cylinder where the inner surface of the first wall body is located; the central axis and the first straight line of the first wall body are in a third plane, the central axis and the third straight line of the first wall body are in a fourth plane, the included angle between the third plane and the fourth plane is theta, the central axis and the second straight line of the first wall body are in a fifth plane, the central axis and the fourth straight line of the first wall body are in a sixth plane, the included angle between the fifth plane and the sixth plane is beta, and theta is not smaller than beta; the outer surface of the first wall body is provided with a first joint part, and the inner surface of the first wall body close to the second end surface is provided with a second joint part; the shapes and the sizes of the first wall body, the second wall body, the third wall body and the fourth wall body are the same, the pipeline body is formed by splicing, the first end face of the first wall body is attached to the first joint part of the second wall body, the first end face of the second wall body is attached to the first joint part of the third wall body, the first end face of the third wall body is attached to the first joint part of the fourth wall body, the first end face of the fourth wall body is attached to the first joint part of the first wall body, the second end face of the first wall body is attached to the second joint part of the fourth wall body, the second end face of the second wall body is attached to the second joint part of the first wall body, the second end face of the third wall body is attached to the second joint part of the second wall body, and the second end face of the fourth wall body is attached to the second joint part of the first wall body; the first power transmission body is located in the first cavity, the second power transmission body is located in the second cavity, the third power transmission body is located in the third cavity, the fourth power transmission body is located in the fourth cavity, and the fifth power transmission body is located in the fifth cavity.
4. A power cable comprises a pipeline body, a first power transmission body, a second power transmission body, a third power transmission body, a fourth power transmission body and a coaxial cable; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of the second wall body and the outer surface of the third wall body, a third cavity is, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first wall body is a part of a circular cylinder, the first end face of the first wall body is a part of a cylindrical surface and is recessed towards the direction of the first wall body, the intersection line of the first end face and the outer surface of the first wall body is a first straight line, the intersection line of the first end face and the inner surface of the first wall body is a second straight line, the first straight line and the second straight line are in a first plane, the first plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the first end face is located is not smaller than that of a cylinder where the outer surface of the first wall body is located; the second end face of the first wall body is a part of a cylindrical surface and protrudes towards the first wall body, the intersection line of the second end face and the outer surface of the first wall body is a third straight line, the intersection line of the second end face and the inner surface of the first wall body is a fourth straight line, the third straight line and the fourth straight line are in a second plane, the second plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the second end face is located is not larger than that of a cylinder where the inner surface of the first wall body is located; the central axis and the first straight line of the first wall body are in a third plane, the central axis and the third straight line of the first wall body are in a fourth plane, the included angle between the third plane and the fourth plane is theta, the central axis and the second straight line of the first wall body are in a fifth plane, the central axis and the fourth straight line of the first wall body are in a sixth plane, the included angle between the fifth plane and the sixth plane is beta, and theta is not smaller than beta; the outer surface of the first wall body is provided with a first joint part, and the inner surface of the first wall body close to the second end surface is provided with a second joint part; the shapes and the sizes of the first wall body, the second wall body, the third wall body and the fourth wall body are the same, the pipeline body is formed by splicing, the first end face of the first wall body is attached to the first joint part of the second wall body, the first end face of the second wall body is attached to the first joint part of the third wall body, the first end face of the third wall body is attached to the first joint part of the fourth wall body, the first end face of the fourth wall body is attached to the first joint part of the first wall body, the second end face of the first wall body is attached to the second joint part of the fourth wall body, the second end face of the second wall body is attached to the second joint part of the first wall body, the second end face of the third wall body is attached to the second joint part of the second wall body, and the second end face of the fourth wall body is attached to the second joint part of the first wall body; first transmission of electricity body is located the first cavity, and the second transmission of electricity body is located the second cavity, and the third transmission of electricity body is located the third cavity, and the fourth transmission of electricity body is located the fourth cavity, and coaxial cable line is located the fifth cavity, and coaxial cable line is by central conductor, the cladding first insulation jacket layer outside central conductor, the shielding layer of winding cladding outside first insulation jacket layer, the second insulation jacket layer of extrusion molding cladding outside the shielding layer constitutes.
5. A power cable has a pipe body, a first power transmission body, a second power transmission body, a third power transmission body, a fourth power transmission body, and a fifth power transmission body; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of the second wall body and the outer surface of the third wall body, a third cavity is arranged, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first power transmission body is positioned in the first cavity, the second power transmission body is positioned in the second cavity, the third power transmission body is positioned in the third cavity, the fourth power transmission body is positioned in the fourth cavity, and the fifth power transmission body is positioned in the fifth cavity; the pipeline body is of an integrated structure; the pipe body is formed by extrusion molding or blow molding; the fifth power transmission body is a stranded body of a steel wire, an iron wire, an aluminum wire, a glass fiber reinforced plastic rod, a steel stranded wire, an aluminum stranded wire or a plurality of glass fiber reinforced plastics.
6. A power cable has a pipe body, a first power transmission body, a second power transmission body, a third power transmission body, a fourth power transmission body, and a fifth power transmission body; the pipeline is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of the second wall body and the outer surface of the third wall body, a third cavity is, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first wall body is a part of a circular cylinder, the first end face of the first wall body is a part of a cylindrical surface and is recessed towards the direction of the first wall body, the intersection line of the first end face and the outer surface of the first wall body is a first straight line, the intersection line of the first end face and the inner surface of the first wall body is a second straight line, the first straight line and the second straight line are in a first plane, the first plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the first end face is located is not smaller than that of a cylinder where the outer surface of the first wall body is located; the second end face of the first wall body is a part of a cylindrical surface and protrudes towards the first wall body, the intersection line of the second end face and the outer surface of the first wall body is a third straight line, the intersection line of the second end face and the inner surface of the first wall body is a fourth straight line, the third straight line and the fourth straight line are in a second plane, the second plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the second end face is located is not larger than that of a cylinder where the inner surface of the first wall body is located; the central axis and the first straight line of the first wall body are in a third plane, the central axis and the third straight line of the first wall body are in a fourth plane, the included angle between the third plane and the fourth plane is theta, the central axis and the second straight line of the first wall body are in a fifth plane, the central axis and the fourth straight line of the first wall body are in a sixth plane, the included angle between the fifth plane and the sixth plane is beta, and theta is not smaller than beta; the outer surface of the first wall body is provided with a first joint part, and the inner surface of the first wall body close to the second end surface is provided with a second joint part; the shapes and the sizes of the first wall body, the second wall body, the third wall body and the fourth wall body are the same, the pipeline body is formed by splicing, the first end face of the first wall body is attached to the first joint part of the second wall body, the first end face of the second wall body is attached to the first joint part of the third wall body, the first end face of the third wall body is attached to the first joint part of the fourth wall body, the first end face of the fourth wall body is attached to the first joint part of the first wall body, the second end face of the first wall body is attached to the second joint part of the fourth wall body, the second end face of the second wall body is attached to the second joint part of the first wall body, the second end face of the third wall body is attached to the second joint part of the second wall body, and the second end face of the fourth wall body is attached to the second joint part of the first wall body; the first power transmission body is positioned in the first cavity, the second power transmission body is positioned in the second cavity, the third power transmission body is positioned in the third cavity, the fourth power transmission body is positioned in the fourth cavity, and the fifth power transmission body is positioned in the fifth cavity; the fifth power transmission body is a stranded body of a steel wire, an iron wire, an aluminum wire, a glass fiber reinforced plastic rod, a steel stranded wire, an aluminum stranded wire or a plurality of glass fiber reinforced plastics.
7. A power cable according to claims 1-6, characterized in that the material of said first wall is polypropylene or polybutylene terephthalate or low density polyethylene or medium density polyethylene or high density polyethylene or low smoke halogen-free polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
8. A pipeline for a power cable is provided with a pipeline body, and is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of, a third cavity is arranged between the inner surface of the third wall body and the outer surface of the fourth wall body, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the pipeline body formula structure as an organic whole, the pipeline body is extrusion molding or blow molding formation.
9. A pipeline for a power cable is provided with a pipeline body, and is characterized in that the pipeline body is formed by splicing a first wall body, a second wall body, a third wall body and a fourth wall body, one end of the first wall body is spliced on the outer surface of the second wall body, one end of the second wall body is spliced on the outer surface of the third wall body, one end of the third wall body is spliced on the outer surface of the fourth wall body, one end of the fourth wall body is spliced on the outer surface of the first wall body, the other end of the first wall body is spliced on the inner surface of the fourth wall body, the other end of the second wall body is spliced on the inner surface of the first wall body, the other end of the third wall body is spliced on the inner surface of the second wall body, the other end of the fourth wall body is spliced on the inner surface of the third wall body, a first cavity is arranged between the inner surface of the first wall body and the outer surface of the second wall body, a second cavity is arranged between the inner surface of, a third cavity is arranged between the inner surface of the third wall body and the outer surface of the fourth wall body, a fourth cavity is arranged between the inner surface of the fourth wall body and the outer surface of the first wall body, and a fifth cavity is arranged between the inner surface of the first wall body, the inner surface of the second wall body, the inner surface of the third wall body and the inner surface of the fourth wall body; the first wall body is a part of a circular cylinder, the first end face of the first wall body is a part of a cylindrical surface and is recessed towards the direction of the first wall body, the intersection line of the first end face and the outer surface of the first wall body is a first straight line, the intersection line of the first end face and the inner surface of the first wall body is a second straight line, the first straight line and the second straight line are in a first plane, the first plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the first end face is located is not smaller than that of a cylinder where the outer surface of the first wall body is located; the second end face of the first wall body is a part of a cylindrical surface and protrudes towards the first wall body, the intersection line of the second end face and the outer surface of the first wall body is a third straight line, the intersection line of the second end face and the inner surface of the first wall body is a fourth straight line, the third straight line and the fourth straight line are in a second plane, the second plane deviates from the central axis of the first wall body, and the diameter of a cylinder where the second end face is located is not larger than that of a cylinder where the inner surface of the first wall body is located; the central axis and the first straight line of the first wall body are in a third plane, the central axis and the third straight line of the first wall body are in a fourth plane, the included angle between the third plane and the fourth plane is theta, the central axis and the second straight line of the first wall body are in a fifth plane, the central axis and the fourth straight line of the first wall body are in a sixth plane, the included angle between the fifth plane and the sixth plane is beta, and theta is not smaller than beta; the outer surface of the first wall body is provided with a first joint part, and the inner surface of the first wall body close to the second end surface is provided with a second joint part; the shape and size of the first wall body, the second wall body, the third wall body and the fourth wall body are the same, the pipeline body is formed in a split mode, the first end face of the first wall body is attached to the first joint portion of the second wall body, the first end face of the second wall body is attached to the first joint portion of the third wall body, the first end face of the third wall body is attached to the first joint portion of the fourth wall body, the first end face of the fourth wall body is attached to the first joint portion of the first wall body, the second end face of the first wall body is attached to the second joint portion of the fourth wall body, the second end face of the second wall body is attached to the second joint portion of the first wall body, the second end face of the third wall body is attached to the second joint portion of the second wall body, and the second end face of the fourth wall body is attached to the second joint portion of the first wall body.
10. A conduit for a power cable as claimed in claim 9, characterized in that the value of β is 150-330 degrees.
CN202010787413.4A 2020-08-07 2020-08-07 Power cable and pipeline for same Withdrawn CN111785428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010787413.4A CN111785428A (en) 2020-08-07 2020-08-07 Power cable and pipeline for same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010787413.4A CN111785428A (en) 2020-08-07 2020-08-07 Power cable and pipeline for same

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CN111785428A true CN111785428A (en) 2020-10-16

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CN202010787413.4A Withdrawn CN111785428A (en) 2020-08-07 2020-08-07 Power cable and pipeline for same

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114898937A (en) * 2022-06-16 2022-08-12 江苏珠影特种电缆有限公司 Composite multi-core cable and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114898937A (en) * 2022-06-16 2022-08-12 江苏珠影特种电缆有限公司 Composite multi-core cable and preparation method thereof
CN114898937B (en) * 2022-06-16 2023-11-10 江苏珠影特种电缆有限公司 Composite multi-core cable and preparation method thereof

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Application publication date: 20201016