WO2016114460A1 - Manchon de jonction et structure de connexion intermédiaire - Google Patents

Manchon de jonction et structure de connexion intermédiaire Download PDF

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Publication number
WO2016114460A1
WO2016114460A1 PCT/KR2015/006387 KR2015006387W WO2016114460A1 WO 2016114460 A1 WO2016114460 A1 WO 2016114460A1 KR 2015006387 W KR2015006387 W KR 2015006387W WO 2016114460 A1 WO2016114460 A1 WO 2016114460A1
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WIPO (PCT)
Prior art keywords
electrode
distance
pair
power cable
insulating layer
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Application number
PCT/KR2015/006387
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English (en)
Korean (ko)
Inventor
김광훈
오동윤
이욱진
이정진
Original Assignee
엘에스전선 주식회사
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.)
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Application filed by 엘에스전선 주식회사 filed Critical 엘에스전선 주식회사
Priority claimed from KR1020150088806A external-priority patent/KR102457873B1/ko
Publication of WO2016114460A1 publication Critical patent/WO2016114460A1/fr

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    • 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
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • 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
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable

Definitions

  • the present invention relates to a joint sleeve and an intermediate connection structure.
  • a power cable can be classified into a device that transmits power by using an internal conductor.
  • the capacity of the power cable that is, an increase in power that can be supplied through the power cable is required.
  • the capacity of the power cable that is, the power is proportional to (voltage * current)
  • the capacity of the power cable is proportional to (voltage * current)
  • the ends of the sleeves prepared in advance are expanded to match the diameters of the pair of cables, and then at room temperature. Shrink to connect.
  • the conventional PMJ type has a difference in diameter between conductors of the pair of cables more than two times, or when the sleeve is expanded, the difference in the expansion ratio of both sides is 15 to 25% or more. This entails a problem that the electric field distribution becomes very unstable at the conductor connection.
  • Korean Patent Publication No. 2011-0123906 (hereinafter referred to as “priority document”) has a constant thickness so that an insulation unit connects heterogeneous power cables of both sides.
  • a configuration inclined in the form Disclosed is a configuration inclined in the form.
  • the insulation unit is provided inclined toward the power cable having a small diameter from the power cable having a large diameter according to the diameters of the heterogeneous power cables of both sides, and the outer surface thereof is also provided as inclined. Therefore, the problem that the electric field distribution becomes unstable when the difference of more than 15 to 25% in the expansion ratio of both sides is not solved.
  • the PJ method has a problem that the cost is remarkably high, and furthermore, the construction requires a high level of skill at the time of construction, and thus the quality depends on the skill of the operator.
  • an object of the present invention is to provide an intermediate connection structure which can be connected to each other by an easier and simpler method when connecting a pair of power cables having different diameters to each other.
  • an object of the present invention is to provide an intermediate connection structure that provides a quality connection state regardless of the operator's skill in connecting a pair of power cables having different diameters to each other.
  • An object of the present invention as described above has a conductor, an inner semiconducting layer, an insulating layer, and an outer semiconducting layer, and in an intermediate connection structure for connecting a pair of power cables having different diameters to each other, the conductor of the pair of power cables
  • It is provided with a joint sleeve of elastic material connected to the entire layer, the joint sleeve is provided on the outside of the connection sleeve and electrically connected to the conductor of the pair of cables, the end of the relatively small first power cable is inserted
  • the distance L 1 from the center of the first end to the inner surface is at a distance L 2 from the center of the second end to the inner surface.
  • the distance P 1 from the surface of the insulating layer of the first power cable to the outer surface of the first electrode at the first end is the surface of the insulating layer of the second power cable at the second end. It is achieved by the intermediate connection structure, characterized in that relatively large relative to the distance (P 2 ) to the outer surface of the first electrode.
  • the distance D 1 from the center of the first end to the outer surface of the first electrode and the distance D 2 from the center of the second end to the outer surface of the first electrode may be the same.
  • the distance L 1 from the center of the first end to the inner surface corresponds to the radius of the end of the first power cable
  • the distance L 2 from the center of the second end to the inner surface is It may be determined to correspond to the radius of the end of the second power cable.
  • the inner diameter of the first electrode may vary continuously between the first end and the second end.
  • the inner wall of the first electrode may be formed by inclining at a predetermined angle toward the second end from the first end.
  • the angle ⁇ of the inner wall of the first electrode may have a range of 0.1 ° to 7.5 °.
  • the distance between the surface of the first electrode and the surface of the joint sleeve insulating layer may be kept constant.
  • both ends of the first electrode may be formed in a round shape.
  • the radius of the round shape of both ends of the first electrode may be different from each other.
  • the object of the present invention as described above in the intermediate connection structure for connecting a pair of power cables of different diameters to each other, a conductor connecting portion for connecting the conductors of the pair of power cables and the conductor connecting portion and the pair It includes a joint sleeve made of an elastic material that is wrapped around the outside of the power cable at room temperature, the joint sleeve is made of a semi-conductive material, electrically connected to the conductor connecting portion, the diameter of the pair of power cables A pair of electric power and a first electrode having a first end into which the end of the small first power cable is inserted and a second end into which the end of the second power cable having a relatively large diameter is inserted; It consists of a semi-conductive material and a joint sleeve insulating layer covering the insulating layer of the cable and separated by a determined distance And a second electrode provided to face each other and electrically connected to an outer semiconducting layer of the pair of power cables, wherein the distance L 1 from the center
  • the intermediate connection structure is characterized in that it is relatively large compared to the distance P 2 from the surface of the insulating layer of the second power cable to the outer surface of the first electrode.
  • the distance D 1 from the center of the first end to the outer surface of the first electrode and the distance D 2 from the center of the second end to the outer surface of the first electrode may be kept the same. have.
  • the inner diameter of the first electrode may be continuously changed between the first end and the second end.
  • the angle ⁇ of the inner wall of the first electrode may have a range of 0.1 ° to 7.5 °.
  • the distance between the surface of the first electrode and the surface of the joint sleeve insulating layer may be kept constant.
  • the radius of the round shape at both ends of the first electrode may be different from each other.
  • the difference in conductor diameter between the first power cable conductor and the second power cable is two times or more, or the difference in the expansion ratio of the joint sleeve to the first power cable and the second power cable is 15 to 25%. Can be.
  • an object of the present invention as described above in the hollow room temperature shrinkable joint sleeve that can be wrapped around a pair of power cable conductor connection is made of a semi-conductive material, the pair of power cable
  • a first electrode having a first end into which an end of a relatively small first power cable is inserted and a second end into which an end of a relatively large second power cable is inserted and electrically connected to the conductor connection part
  • a distance (L 1) from the center of the first end to the inner surface of the second end Is relatively small relative to the distance (L 2) of the inside surface on the core is small, the distance from the first end to the outer surface of the first electrode on the surface of the first insulating layer of the first power cable (P 1) is the second It is achieved by a joint sleeve, characterized in that relatively large relative to the distance (P 2 ) from the surface of the insulating layer of the second power cable to the outer surface of the first electrode at the end.
  • the distance D 1 from the center of the first end to the outer surface of the first electrode and the distance D 2 from the center of the second end to the outer surface of the first electrode may be kept the same. have.
  • the inner diameter of the first electrode may vary continuously between the first and second ends.
  • the angle ⁇ of the inner wall of the first electrode may have a range of 0.1 ° to 7.5 °.
  • the distance between the surface of the first electrode and the surface of the joint sleeve insulating layer may be kept constant.
  • the radius of the round shape at both ends of the first electrode may be different from each other.
  • the intermediate connection structure of the present invention when connecting a pair of power cables having different diameters to each other, it is possible to provide a high quality intermediate connection structure regardless of the skill of the operator.
  • FIG. 1 is a perspective view showing the internal configuration of a power cable having an insulation layer composed of XLPE,
  • FIG. 2 is a cross-sectional view showing an intermediate connection structure of the intermediate junction box according to an embodiment of the present invention
  • FIG. 3 is a cross-sectional view showing a state in which the compression sleeve is mounted in the intermediate junction box
  • FIG. 4 is a cross-sectional view showing a state in which a connection sleeve is mounted in FIG. 3;
  • FIG. 5 is a perspective view of a first electrode
  • FIG. 6 is a cross-sectional view taken along the line 'VI-VI' of FIG. 5,
  • FIG. 7 is a schematic diagram for calculating the inclination angle of the inner wall of the first electrode.
  • FIG. 1 is a perspective view showing an internal configuration of a power cable 100 having an insulation layer composed of XLPE.
  • the power cable 100 includes a conductor 10 along a central portion thereof.
  • the conductor 10 serves as a passage through which a current flows, and may be made of, for example, copper or aluminum.
  • the conductor 10 is configured by twisting a plurality of element wires 11.
  • the surface of the conductor 10 may be non-uniform and the electric field may be uneven, and corona discharge is likely to occur in part.
  • the insulating performance may be reduced.
  • the outside of the conductor 10 is wrapped with a semiconductive material such as semiconductive carbon paper, and the layer formed by the semiconductive material is defined as the internal semiconducting layer 12.
  • the inner semiconducting layer 12 improves the dielectric strength of the insulating layer 14, which will be described later, by uniformizing the electric charge distribution on the conductor surface and making the electric field uniform. Furthermore, the formation of the gap between the conductor 10 and the insulating layer 14 is prevented to prevent corona discharge and ionization. In addition, the inner semiconducting layer 12 also serves to prevent the insulator 10 from penetrating the insulating layer 14 when the power cable 100 is manufactured.
  • An insulating layer 14 is provided outside the inner semiconducting layer 12.
  • the insulating layer 14 electrically insulates the conductor 10 from the outside.
  • the insulating layer 14 has a high breakdown voltage and should be able to be stably maintained for a long time. Furthermore, the dielectric loss is low and must have heat resistance such as heat resistance. Therefore, polyolefin resin, such as polyethylene and a polypropylene, is used for the insulating layer 14, A polyethylene resin is preferable.
  • the polyethylene resin may be a crosslinking resin and may be prepared by a silane or an organic peroxide such as dicumyl peroxide (DCP) as a crosslinking agent.
  • DCP dicumyl peroxide
  • a semiconducting layer is provided on the outside of the insulating layer 14 again, and is defined as the outer semiconducting layer 16 to distinguish it from the above-described internal semiconducting layer 12.
  • the outer semiconducting layer 16 is grounded to serve to improve the dielectric strength of the insulating layer 14 by making the distribution of electric force lines equal to the potential between the inner semiconducting layer 12 and the aforementioned.
  • the external semiconducting layer 16 can smooth the surface of the insulating layer 14 in the cable to alleviate electric field concentration, thereby preventing corona discharge.
  • the outer side of the outer semiconducting layer 16 is provided with a shielding layer 18 made of a metal sheath or a neutral wire, depending on the type of cable. Shielding layer 18 is provided for electrical shielding and return of short circuit current.
  • the outer shell 20 is provided on the outer side of the power cable 100.
  • the outer shell 20 is provided on the outer side of the cable 100 to serve to protect the internal configuration of the cable 100. Accordingly, the outer shell 20 has excellent properties of chemical resistance and mechanical strength to withstand chemicals such as weather resistance, chemicals and the like that can withstand various climates such as light, weather, moisture, and gas in the air.
  • PVC Polyvinyl chloride
  • PE Polyethylene: polyethylene
  • FIG. 2 is a cross-sectional view showing an intermediate connection structure of the intermediate junction box 300 according to an embodiment of the present invention.
  • the intermediate connection structure of the intermediate junction box 300 to be described below has a difference in diameter between the conductors 10A and 10B of the pair of power cables by more than two times, or by expanding both ends of the joint sleeve 360 to be described later.
  • When fitted to both ends of the pair of power cables (100A, 100B) can be applied when the difference of more than 15 to 25% in the expansion rate of both sides. This is because the electric field distribution becomes very unstable with the existing PMJ type under the above conditions.
  • look at in detail look at in detail.
  • the intermediate connection structure of the intermediate junction box 300 includes a conductor connection part 312 connecting the conductors 10A and 10B of the pair of power cables 100A and 100B, and the conductor connection part ( 312) and a joint sleeve 360 made of an elastic material which is wrapped around the outside of the pair of power cables 100A and 100B and is contractible at room temperature.
  • the conductor connecting portion 312 is connected to the crimping sleeve 310 for crimping and connecting the conductors 10A and 10B and the insulating layers 14A and 14B of the pair of power cables 100A and 100B. At least one of the connection sleeve 320 is configured to surround the (310).
  • the joint sleeve 360 is provided outside the connection sleeve 320 to be electrically connected to the conductors 10A and 10B of the pair of cables 100A and 100B and has a relatively small diameter.
  • a first electrode 330 having a first end 330A into which an end of the power cable 100A is inserted and a second end 330B into which an end of a second power cable 100B having a relatively large diameter is inserted;
  • the pair of second electrodes 340 and the insulating layers 14A and 14B of the pair of power cables 100A and 100B provided to be spaced apart by a predetermined distance from the inside of the intermediate junction box 300 to face each other.
  • a joint sleeve insulating layer 350 surrounding the first electrode 330, the second electrode 340, and the insulating layers 14A and 14B of the pair of power cables 100A and 100B.
  • the intermediate junction box 300 includes a housing 200 formed of a so-called 'coffin box' or 'metal casing' surrounding the joint sleeve 360.
  • a waterproof material (not shown) may be filled in the space between the housing 200 and the joint sleeve 360.
  • the first electrode 330 is a distance (D 2) at the center of said first end away from the center of the (330A) to the outer surface (D 1) and the second end (330B) to the outer surface Are equal to each other, each distance L 1 , L 2 from each center to the inner surface at the first end 330A and the second end 330B and the insulating layer 14A of each of the power cables 100A, 100B.
  • the distances P 1 , P 2 from the surface of, 14B to the outer surface can be determined differently from each other.
  • the joint sleeve 360 and the first electrode 330 will be described in detail later.
  • FIG 3 is a cross-sectional view illustrating a state in which the compression sleeve 310 is mounted in the intermediate junction box 300.
  • the crimping sleeve 310 is inserted into the end of the conductor (10A, 10B) of a pair of power cables (100A, 100B) to be connected to each other through both ends. End portions of the pair of opposing conductors 10A and 10B are electrically connected to each other by welding or the like in the compression sleeve 310.
  • Coupling holes 314A and 314B at both ends of the crimping sleeve 310 have end portions of conductors 10A and 10B on both sides having different diameters from each other, so that the diameters of the coupling holes 314A and 314B are different from each other. Can be.
  • the ends of the conductors 10A and 10B of the pair of power cables 100A and 100B are respectively inserted into the coupling holes 314A and 314B on both sides of the crimp sleeve 310, and the crimp sleeve 310 is crimped. It is crimped
  • the surfaces of the connection portions of the conductors 10A and 10B are very large. It is formed irregularly.
  • the pressing sleeve 310 is pressed by a pressing machine, the surface thereof may be irregularly formed. In this case, an electric field abnormality may occur due to an irregular surface of the crimping sleeve 310, which may act as an electric field vulnerability in the intermediate junction box 300.
  • connection sleeve 320 is provided on the outer side of the compression sleeve 310 as shown in FIG.
  • connection sleeve 320 is mounted in FIG. 3.
  • connection sleeve 320 is configured to surround the compression sleeve 310 and is connected to the insulating layers 14A and 14B of the pair of power cables 100A and 100B facing each other. .
  • connection sleeve 320 extends from the insulating layer 14A of the first power cable 100A toward the insulating layer 14B of the second power cable 100B.
  • the surface of the connection sleeve 320 is provided to form a flat surface.
  • the connection sleeve 320 is configured to surround the compression sleeve 310, and forms a continuous surface with a surface of the pair of insulating layers 14A and 14B facing each other and is flat. The surface is formed to prevent an electric field abnormality.
  • the connecting sleeve 320 since a pair of cables 100A and 100B having different diameters are connected to each other, the connecting sleeve 320 also has a structure having different diameters on both sides thereof, and the outside of the second power cable 100B having a relatively large diameter. Has a structure inclined toward the first power cable 100A having a relatively small diameter.
  • connection sleeve 320 is configured to be electrically connected to the conductor (10A, 10B) through the braided wire 312 and the like therein.
  • connection sleeve 320 includes an insulating layer 14A and 14B of the pair of power cables and an elastic joint sleeve 360 connected to an external semiconducting layer.
  • the joint sleeve 360 has a hollow shape and has a room temperature shrinkage property.
  • the joint sleeve 360 is provided outside the connection sleeve 320 to be electrically connected to the conductors 10A and 10B of the pair of cables, and the first power cable 100A having a relatively small diameter.
  • a first electrode 330 having a first end 330A into which an end of the second end is inserted, and a second end 330B into which an end of the second power cable 100B having a relatively large diameter is inserted;
  • the first electrode 330 is connected to the pair of second electrodes 340 and the insulating layers 14A and 14B of the pair of power cables provided to be spaced apart by a predetermined distance from the inside of the 360.
  • a joint sleeve insulating layer 350 wrapped and in contact with the second electrode 340 and the insulating layers 14A and 14B of the pair of power cables.
  • the first electrode 330 and the second electrode 340 serve to spread the electric field evenly without being locally concentrated therebetween.
  • the first electrode 330 is made of a semiconductive material and is electrically connected to the conductors 10A and 10B of the power cable to serve as a so-called high voltage electrode.
  • the second electrode 340 is made of a semiconducting material and is connected to the external semiconducting layers 16A and 16B of the power cable to serve as a so-called shield electrode. Accordingly, the electric field distribution is distributed along the first electrode 330 and the second electrode 340 in the intermediate junction box 300.
  • the joint sleeve insulating layer 350 is made of an insulating material and is in contact with the insulating layers 14A and 14B of the pair of power cables.
  • FIG. 5 is a perspective view of the first electrode 330 in the intermediate junction box 300 according to the invention
  • Figure 6 is a cross-sectional view taken along the line 'VI-VI' of FIG.
  • the first electrode 330 is a second power cable having a relatively large diameter and a first end 330A into which an end of a relatively small first power cable 100A is inserted. It has a second end 330B into which the end of 100B is inserted.
  • the intermediate connection structure of the intermediate junction box 300 connects the first power cable 100A and the second power cable 100B having different diameters to each other.
  • the first electrode 330 is the second distance from the center of the first end (330A) at the center of the distance (D 1) and the second end (330B) to the external surface to the external surface (D 2) Are the same as each other, each distance (L 1 , L 2 ) from each of the center to the inner surface at the first end (330A) and the second end (330B) and the insulating layer of each of the power cables (100A, 100B)
  • the distances P 1 , P 2 from the surfaces of 14A and 14B to the outer surface can be determined differently from each other.
  • the thickness of the first electrode 330 may be determined so that the distance between the surface of the first electrode 330 and the joint sleeve insulating layer 350 to be described later to relax the electric field. That is, the thickness of the first electrode 330 may be appropriately determined in consideration of capacity, diameter, etc. of the power cable, and is not limited to any one numerical value in the present specification. However, if the distance A 1 , A 2 (see FIG. 2) between the surface of the first electrode 330 and the surface of the joint sleeve insulating layer 350 to be described later is not kept constant, the electric field toward the shorter distance Can be concentrated and act as an electric field vulnerability.
  • the shape of the first electrode 330 is a distance D 1 from the center of the first end 330A to the outer surface of the second end 330B as shown in FIG. 6.
  • the distance D 2 from the center to the outer surface is configured equal to each other so that the outer surface is flat without being inclined.
  • the distances A 1 and A 2 (see FIG. 2) between the surface of the first electrode 330 and the surface of the joint sleeve insulating layer 350 to be described later are kept substantially constant, whereby the first electrode ( The electric field between the 330 and the joint sleeve insulating layer 350 may be relaxed, and further, electric field distortion may be prevented.
  • an end of the first power cable 100A having a smaller diameter is inserted into the first end 330A and the second end is inserted.
  • An end portion of the second power cable 100B having a diameter relatively larger than 330B is inserted.
  • the distances L 1 and L 2 from each center to the inner surface at the first end 330A and the second end 330B are constant.
  • the distances P 1 and P 2 from the surfaces of the insulating layers 14A and 14B of the power cables 100A and 100B to the outer surfaces may be different from each other.
  • the distance L 1 from the center of the first end 330A to the inner surface is relatively smaller than the distance L 2 from the center of the second end 330B to the inner surface
  • the distance P 1 from the surface of the insulating layer 14A of the first power cable 100A to the outer surface at the first end 330A is the second power cable 100B at the second end 330B. ) it is relatively large relative to the distance (P 1) to the external surface on the surface of the insulating layer (14B) of the.
  • the distance L 1 from the center of the first end 330A to the inner surface will correspond to the radius of the end of the first power cable 100A, and inside the center of the second end 330B.
  • the distance L 2 to the surface will likewise correspond to the radius of the end of the second power cable 100B.
  • the distance L 1 from the center of the first end 330A to the inner surface is relatively small compared to the distance L 2 from the center of the second end 330B to the inner surface.
  • the distance P 1 from the surface of the insulating layer 14A of the first power cable 100A to the outer surface of the first end 330A is The second end 330B is relatively larger than the distance P 1 from the surface of the insulating layer 14B of the second power cable 100B to the outer surface.
  • the inner wall of the first electrode 330 may be formed by inclining at a predetermined angle toward the second end 330B from the first end 330A. Looking at the inner wall of the through hole 332 is formed by inclining at a predetermined angle toward the end of the second power cable 100B having a relatively large diameter at the end of the first power cable 100A having a small diameter. In this case, the inner diameter of the through hole 332 of the first electrode 330 may be provided to continuously change from one end toward the other end.
  • the angle ⁇ (see FIG. 7) of the inner wall from the first end 330A to the second end 330B at the inner wall of the first electrode 330 may be appropriately determined. That is, as shown in FIG. 7, the angle ⁇ of the inner wall is the length B of the first electrode 330 and the distance L 1 from the center of the first end 330A to the inner surface thereof. Is determined as the difference A of the distance L 2 from the center of the second end 330B to the inner surface.
  • the angle ⁇ of the inner wall varies depending on the capacity of the power cable 100 but may have a range of about 0.1 ° to 7.5 °.
  • the length B of the first electrode 330 has a range of about 200 mm to 280 mm, and the length B of the first electrode 330 and the first end (330A) the distance (L 1) and the second end (330B) the difference (a) of the distance (L 2) from the center to the inside surface is about 1.0mm to about 26.3mm in the center of the inside surface Has a range of.
  • the minimum angle ⁇ min at the angle ⁇ of the inner wall has a length B of the first electrode 330 having a maximum value of 280 mm and a difference A having a minimum value of 1.0 mm. Is determined.
  • the maximum angle ⁇ max at the angle ⁇ of the inner wall has a length B of the first electrode 330 having a minimum value of 200 mm, and the difference A has a maximum value of 26.3 mm, Is determined.
  • the angle [theta] of the inner wall calculated according to the above case is in the range of approximately 0.2 ° to 7.5 °.
  • the length (B) and the first of the first electrode 330 the difference (a) of the first end distance (L 1) from the center to the inside surface and the distance (L 2) of the first to the inner surface at the center of the second end (330B) of the (330A) is approximately 0.50mm to 23.1mm Has a range.
  • the angle ⁇ of the inner wall is in the range of approximately 0.1 ° to 5.5 °.
  • the length B of the first electrode 330 has a range of about 240 mm to 280 mm, and the length B and the first length of the first electrode 330.
  • the difference (a) of the first end distance (L 1) from the center to the inside surface and the distance (L 2) of the first to the inner surface at the center of the second end (330B) of the (330A) is approximately 1.95mm to 16.78mm Has a range.
  • the angle ⁇ of the inner wall is in the range of approximately 0.4 ° to 4.0 °.
  • the first electrode 330 and the second electrode 340 serve to spread the electric field evenly without locally concentrating therebetween.
  • end portions of the first electrode 330 and the second electrode 340 may be rounded, as shown in FIGS. 5 and 6.
  • the radius R 1 of the round of the first end 330A and the radius R 2 of the round of the second end 330B may be different from each other. It can be determined to be different from each other.
  • the joint sleeve insulating layer 350 provided on the outer side of the intermediate junction box 300 illustrated in FIG. 2 is provided on the outer side of the intermediate junction box 300 to provide insulation performance of the intermediate junction box 300. Secured.
  • the joint sleeve insulating layer 350 may be formed of ethylene propylene diene monomer (EPDM) or liquid silicon rubber (LSR).
  • a metal sheath (not shown) may be restored outside the joint sleeve insulating layer 350.

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Abstract

La présente invention concerne un manchon de jonction et une structure de connexion intermédiaire. La structure de connexion intermédiaire selon la présente invention comprend : un manchon de compression destiné à comprimer et à connecter les conducteurs d'une paire de câbles d'alimentation ; un manchon de connexion relié aux couches isolantes de la paire de câbles d'alimentation de manière à recouvrir le manchon de compression ; et un manchon de jonction, qui est composé d'un matériau élastique, présent sur le côté externe du manchon de connexion et relié aux couches isolantes et aux couches semi-conductrices externes de la paire de câbles d'alimentation. Le manchon de jonction se trouve sur l'extérieur du manchon de connexion et il est connecté électriquement aux conducteurs de la paire de câbles d'alimentation, et comprend : une première électrode ayant une première portion d'extrémité dans laquelle est insérée la portion d'extrémité du premier câble d'alimentation ayant un diamètre relativement petit, et une deuxième portion d'extrémité dans laquelle est insérée la portion d'extrémité du deuxième câble d'alimentation ayant un diamètre relativement grand ; une paire de deuxièmes électrodes espacées à une distance prédéterminée à l'intérieur du manchon de jonction de manière à se faire face l'une à l'autre ; et une couche isolante de manchon de jonction reliée aux couches isolantes de la paire de câbles d'alimentation et recouvrant la première électrode, les deuxièmes électrodes et les couches isolantes de la paire de câbles d'alimentation tout en venant en contact avec celles-ci. Une distance (L1) entre le centre de la première portion d'extrémité et la surface interne de celle-ci est relativement plus courte qu'une distance (L2) entre le centre de la deuxième portion d'extrémité et la surface interne de celle-ci, et une distance (P1) entre la surface de la couche isolante du premier câble d'alimentation et la surface extérieure de la première électrode au niveau de la première portion d'extrémité est relativement plus longue qu'une distance (P2) entre la surface de la couche isolante du deuxième câble d'alimentation et la surface extérieure de la première électrode au niveau de la deuxième portion d'extrémité.
PCT/KR2015/006387 2015-01-15 2015-06-23 Manchon de jonction et structure de connexion intermédiaire WO2016114460A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2015-0007403 2015-01-15
KR20150007403 2015-01-15
KR10-2015-0088806 2015-06-23
KR1020150088806A KR102457873B1 (ko) 2015-01-15 2015-06-23 조인트슬리브 및 중간접속구조

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WO2016114460A1 true WO2016114460A1 (fr) 2016-07-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1042446A (ja) * 1996-07-19 1998-02-13 Sumitomo Electric Ind Ltd ゴム、プラスチック電力ケーブルの異径接続部
JP2002095147A (ja) * 2000-09-12 2002-03-29 Mitsubishi Cable Ind Ltd チューブ状補強絶縁体および電力ケーブルの接続構造
KR20040090735A (ko) * 2003-04-18 2004-10-26 후루카와 덴키 고교 가부시키가이샤 상온 수축형 고무 유닛
JP2009100585A (ja) * 2007-10-18 2009-05-07 Viscas Corp ケーブル接続部の処理方法及び構造
JP4609821B2 (ja) * 2001-01-23 2011-01-12 古河電気工業株式会社 電力ケーブル接続部

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1042446A (ja) * 1996-07-19 1998-02-13 Sumitomo Electric Ind Ltd ゴム、プラスチック電力ケーブルの異径接続部
JP2002095147A (ja) * 2000-09-12 2002-03-29 Mitsubishi Cable Ind Ltd チューブ状補強絶縁体および電力ケーブルの接続構造
JP4609821B2 (ja) * 2001-01-23 2011-01-12 古河電気工業株式会社 電力ケーブル接続部
KR20040090735A (ko) * 2003-04-18 2004-10-26 후루카와 덴키 고교 가부시키가이샤 상온 수축형 고무 유닛
JP2009100585A (ja) * 2007-10-18 2009-05-07 Viscas Corp ケーブル接続部の処理方法及び構造

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