CN110634612A - Non-magnetic material armored cross-linked polyethylene insulated power cable - Google Patents

Non-magnetic material armored cross-linked polyethylene insulated power cable Download PDF

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Publication number
CN110634612A
CN110634612A CN201911010972.8A CN201911010972A CN110634612A CN 110634612 A CN110634612 A CN 110634612A CN 201911010972 A CN201911010972 A CN 201911010972A CN 110634612 A CN110634612 A CN 110634612A
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CN
China
Prior art keywords
layer
magnetic material
power cable
insulated power
polyethylene insulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911010972.8A
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Chinese (zh)
Inventor
尚永久
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Hubei Lisheng Cable Co Ltd
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Hubei Lisheng Cable Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hubei Lisheng Cable Co Ltd filed Critical Hubei Lisheng Cable Co Ltd
Priority to CN201911010972.8A priority Critical patent/CN110634612A/en
Publication of CN110634612A publication Critical patent/CN110634612A/en
Pending 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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • 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
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • 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
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/228—Metal braid
    • 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
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions

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  • Insulated Conductors (AREA)

Abstract

The invention discloses a non-magnetic material armored cross-linked polyethylene insulated power cable which comprises a clamp, a cable body, an ear plate, a mounting hole, a fixing bolt, a first connecting plate, a second connecting plate, a fixing nut, a connecting ring, a clamping groove, a first connecting hole, a second connecting hole, a through hole, a sealing washer, an outer sheath, a non-magnetic belt, a flame-retardant layer, a tensile layer, an inner cushion layer, an insulating layer and a circular conductor. The round conductor adopts a round non-pressing structure and is used for increasing the outer diameter of the cable and improving the bending performance and the outer diameter of the cable, so that the cable can achieve a better heat dissipation effect in the use process; the non-magnetic material can adopt stainless steel bands, aluminum alloy bands, aluminum bands or pure copper bands and the like, the non-magnetic bands are of a double-layer gap wrapping structure, and eddy current can be reduced when alternating current repeatedly passes through the non-magnetic bands, so that heat is reduced; the clamp is fixed at the wiring position through the lug plate, and the sealing performance of the wiring position is improved by matching with the sealing washer, so that the service life is prolonged.

Description

Non-magnetic material armored cross-linked polyethylene insulated power cable
Technical Field
The invention relates to a power cable, in particular to a non-magnetic material armored cross-linked polyethylene insulated power cable, and belongs to the technical field of power cable application.
Background
Since the first cable invented by edison of the inventor of the united states in 1879, the history of hundreds of years has been developed, and with the more and more extensive application of electric energy, the industry has also developed at a high speed; along with the high-speed development of industry, high-power single-machine equipment is more and more, in China, single-machine equipment with rated voltage of 0.38KV and power of 500KW or even higher is more and more common, the specification of cables is more and more large, most of cables are directly buried and laid in consideration of construction difficulty and construction environment, and sometimes, no cable bridge or cable trench special for cable laying exists, so that a certain amount of requirements are met for single-core steel-tape armored cables.
In the prior art, the galvanized steel strip is adopted in the common steel strip armored cable, the material is a magnetic material, induced current can be generated when alternating current passes repeatedly by the cable, the steel strip can be caused to generate heat to cause the temperature of a conductor to rise, the current-carrying capacity and the service life of the cable can be reduced, the cable is subjected to breakdown due to heating in serious conditions, the sealing performance and the stability of the joint of the current cable are general when the current cable is installed, and the service life of the current cable can be influenced. Therefore, a non-magnetic material armored cross-linked polyethylene insulated power cable is proposed to solve the above problems.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a crosslinked polyethylene insulated power cable sheathed with a nonmagnetic material.
The invention achieves the aim through the following technical scheme that the non-magnetic material armored cross-linked polyethylene insulated power cable comprises a hoop, a first connecting plate, a second connecting plate, a fixing bolt and a cable body which are sequentially arranged from left to right;
the hoop is sleeved on one end surface of the cable body, the first connecting plate and the second connecting plate are fixedly connected to the two end surfaces of the hoop, and a first connecting hole and a second connecting hole are formed in the surfaces of the first connecting plate and the second connecting plate respectively; the tail end of the fixing bolt penetrates through the first connecting hole and the second connecting hole respectively, and a fixing nut is screwed at the tail end of the fixing bolt;
the cable body comprises an outer sheath, a non-magnetic tape, a flame-retardant layer, a tensile layer, an inner cushion layer, an insulating layer and a round conductor, wherein the insulating layer is sleeved on the outer surface of the round conductor, the inner cushion layer is sleeved on the outer surface of the insulating layer, the tensile layer is sleeved on the outer surface of the inner cushion layer, the flame-retardant layer is sleeved on the outer surface of the tensile layer, the non-magnetic tape is sleeved on the outer surface of the flame-retardant layer, and the outer sheath is sleeved on the outer surface of the non-magnetic tape.
Preferably, the surface rigid coupling of clamp has the otic placode, just the side of otic placode is opened there is the mounting hole.
Preferably, the outer end face of the hoop is fixedly connected with a connecting ring, a clamping groove is formed in the surface of the connecting ring, and a sealing washer is clamped inside the clamping groove.
Preferably, the two ends of the cable body are respectively sleeved with one hoop, and the hoops are of annular structures.
Preferably, a through hole is formed in the connecting ring, and the through hole is formed in the outer end face of the clamp.
Preferably, the round conductor is composed of a plurality of annealed round copper wires, and the plurality of annealed soft round copper wires are twisted and molded in a regular twisting manner.
Preferably, the insulating layer is in a circular ring shape and evenly and tightly covers the surface of the round conductor, and the inner cushion layer is installed in a squeezing or wrapping mode.
Preferably, the non-magnetic belt adopts an aluminum alloy belt, and the non-magnetic belt is of a double-layer gap wrapping structure.
Preferably, the flame-retardant layer is made of rock wool, and the tensile layer is of a net structure woven by copper wires.
Preferably, the outer sheath is made of polyethylene material and is formed in an extrusion coating mode.
The invention has the beneficial effects that:
1. the round conductor adopts a round non-pressing structure and is used for increasing the outer diameter of the cable and improving the bending performance and the outer diameter of the cable, so that the cable can achieve a better heat dissipation effect in the use process, the flame retardant capability can be enhanced by the arrangement of the flame retardant layer, and meanwhile, the air permeability of the rock wool material is better, and the heat dissipation effect is not influenced;
2. the non-magnetic material can adopt stainless steel bands, aluminum alloy bands, aluminum bands or pure copper bands and the like, the non-magnetic bands are of double-layer gap wrapping structures, and eddy current can be reduced when alternating current repeatedly passes through the non-magnetic bands, so that the generation of internal heat is reduced, and a certain protection effect is achieved;
3. the clamp can be fixed on two end faces of the cable body through the matching of the fixing bolt and the fixing nut, the circular conductor can penetrate through the through hole on the end face of the clamp to be connected, the clamp is fixed at the connection position through the lug plate, the sealing performance of the connection position is improved through the matching of the sealing washer, and the service life is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an end view of the overall structure of the present invention;
FIG. 3 is a side view of the clip of the present invention;
FIG. 4 is a schematic structural view of a cable body according to the present invention;
fig. 5 is a schematic view of the structure of the tensile layer of the present invention.
In the figure: 1. the clamp, 2, the cable body, 3, the otic placode, 4, the mounting hole, 5, fixing bolt, 6, first connecting plate, 7, second connecting plate, 8, fixation nut, 9, the go-between, 10, the draw-in groove, 11, first connecting hole, 12, second connecting hole, 13, the through-hole, 14, seal ring, 15, oversheath, 16, non-magnetic tape, 17, fire-retardant layer, 18, tensile layer, 19, the inner cushion layer, 20, the insulating layer, 21, circular conductor.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1-5, a non-magnetic material armored cross-linked polyethylene insulated power cable includes a hoop 1, a first connecting plate 6, a second connecting plate 7, a fixing bolt 5, and a cable body 2, which are sequentially installed from left to right;
the hoop 1 is sleeved on one end surface of the cable body 2, the first connecting plate 6 and the second connecting plate 7 are fixedly connected to the two end surfaces of the hoop 1, and a first connecting hole 11 and a second connecting hole 12 are respectively formed in the surfaces of the first connecting plate 6 and the second connecting plate 7; the tail end of the fixing bolt 5 penetrates through the first connecting hole 11 and the second connecting hole 12 respectively, and a fixing nut 8 is screwed at the tail end of the fixing bolt 5;
the cable body 2 is composed of an outer sheath 15, a non-magnetic tape 16, a flame-retardant layer 17, a tensile layer 18, an inner cushion layer 19, an insulating layer 20 and a round conductor 21, the insulating layer 20 is sleeved on the outer surface of the round conductor 21, the inner cushion layer 19 is sleeved on the outer surface of the insulating layer 20, the tensile layer 18 is sleeved on the outer surface of the inner cushion layer 19, the flame-retardant layer 17 is sleeved on the outer surface of the tensile layer 18, the non-magnetic tape 16 is sleeved on the outer surface of the flame-retardant layer 17, and the outer sheath 15 is sleeved on the outer surface of the non-magnetic tape 16.
An ear plate 3 is fixedly connected to the surface of the hoop 1, and a mounting hole 4 is formed in the side surface of the ear plate 3; a connecting ring 9 is fixedly connected to the end face of the outer end of the hoop 1, a clamping groove 10 is formed in the surface of the connecting ring 9, and a sealing washer 14 is clamped inside the clamping groove 10; the two ends of the cable body 2 are respectively sleeved with the hoop 1, and the hoop 1 is of a circular structure; a through hole 13 is formed in the connecting ring 9, and the through hole 13 is formed in the outer end face of the hoop 1; the round conductor 21 consists of a plurality of annealed round copper wires, and a plurality of annealed soft round copper wires are twisted and molded in a regular twisting manner; the insulating layer 20 is uniformly and tightly covered on the surface of the circular conductor 21 in a circular ring shape, and the inner cushion layer 19 is installed in an extruding or wrapping mode; the non-magnetic belt 16 is made of aluminum alloy belt and has a double-layer gap wrapping structure; the flame-retardant layer 17 is made of rock wool, and the tensile layer 18 is of a net structure formed by weaving copper wires; the outer sheath 15 is made of polyethylene material and is formed by extrusion.
When the cable is used, the circular conductor 21 is arranged in the cable body 2, the circular conductor 21 adopts a circular non-pressing structure and is used for increasing the outer diameter of the cable and improving the bending performance and the outer diameter of the cable, so that the cable can achieve a better heat dissipation effect in the using process, the flame retardant layer 17 is arranged to enhance the flame retardant capability, and meanwhile, the rock wool material has good air permeability and does not influence the heat dissipation effect; the non-magnetic belt 16 can be a stainless steel belt, an aluminum alloy belt, an aluminum belt or a pure copper belt, and the like, the non-magnetic belt 16 is of a double-layer gap wrapping structure, and can reduce the generation of eddy current when alternating current repeatedly passes through, so that the generation of internal heat is reduced, and a certain protection effect is achieved;
then when the wiring, can fix clamp 1 on two terminal surfaces of cable body 2 through the cooperation of fixing bolt 5 and fixation nut 8, pass circular conductor 21 through the through-hole 13 of clamp 1 terminal surface to this carries out the wiring, fixes its clamp 1 in the wiring department through otic placode 3, and cooperation sealing washer 14 improves the leakproofness of wiring department, has prolonged life.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a non-magnetic material armor crosslinked polyethylene insulated power cable which characterized in that: the cable clamp comprises a clamp hoop (1), a first connecting plate (6), a second connecting plate (7), a fixing bolt (5) and a cable body (2) which are sequentially arranged from left to right;
the hoop (1) is sleeved on one end surface of the cable body (2), the first connecting plate (6) and the second connecting plate (7) are fixedly connected to the two end surfaces of the hoop (1), and a first connecting hole (11) and a second connecting hole (12) are formed in the surfaces of the first connecting plate (6) and the second connecting plate (7) respectively; the tail end of the fixing bolt (5) penetrates through the first connecting hole (11) and the second connecting hole (12) respectively, and a fixing nut (8) is screwed at the tail end of the fixing bolt (5);
the cable body (2) is composed of an outer sheath (15), a non-magnetic tape (16), a flame-retardant layer (17), a tensile layer (18), an inner cushion layer (19), an insulating layer (20) and a circular conductor (21), wherein the insulating layer (20) is sleeved on the outer surface of the circular conductor (21), the inner cushion layer (19) is sleeved on the outer surface of the insulating layer (20), the tensile layer (18) is sleeved on the outer surface of the inner cushion layer (19), the flame-retardant layer (17) is sleeved on the outer surface of the tensile layer (18), the non-magnetic tape (16) is sleeved on the outer surface of the flame-retardant layer (17), and the outer sheath (15) is sleeved on the outer surface of the non-magnetic tape (16).
2. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the surface rigid coupling of clamp (1) has otic placode (3), just mounting hole (4) have been opened to the side of otic placode (3).
3. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the outer end face of clamp (1) is fixedly connected with a connecting ring (9), a clamping groove (10) is formed in the surface of the connecting ring (9), and a sealing washer (14) is clamped inside the clamping groove (10).
4. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the two ends of the cable body (2) are respectively sleeved with the hoop (1), and the hoop (1) is of a circular ring structure.
5. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 3, wherein: the inside of go-between (9) is equipped with through-hole (13), just through-hole (13) are seted up clamp (1) outer terminal surface.
6. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the round conductor (21) is composed of a plurality of annealed round copper wires, and the annealed soft round copper wires are twisted and molded in a regular twisting mode.
7. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the insulating layer (20) is in a circular ring shape and evenly and tightly covers the surface of the round conductor (21), and the inner cushion layer (19) is installed in an extruding or wrapping mode.
8. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the non-magnetic belt (16) is an aluminum alloy belt and is of a double-layer gap wrapping structure.
9. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the flame-retardant layer (17) is made of rock wool materials, and the tensile layer (18) is of a net structure woven by copper wires.
10. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, wherein: the outer sheath (15) is made of polyethylene materials and is formed in an extrusion wrapping mode.
CN201911010972.8A 2019-10-22 2019-10-22 Non-magnetic material armored cross-linked polyethylene insulated power cable Pending CN110634612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911010972.8A CN110634612A (en) 2019-10-22 2019-10-22 Non-magnetic material armored cross-linked polyethylene insulated power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911010972.8A CN110634612A (en) 2019-10-22 2019-10-22 Non-magnetic material armored cross-linked polyethylene insulated power cable

Publications (1)

Publication Number Publication Date
CN110634612A true CN110634612A (en) 2019-12-31

Family

ID=68977268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911010972.8A Pending CN110634612A (en) 2019-10-22 2019-10-22 Non-magnetic material armored cross-linked polyethylene insulated power cable

Country Status (1)

Country Link
CN (1) CN110634612A (en)

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