WO2022001270A1 - 一种电缆中间接头安装方法及扩张装置 - Google Patents

一种电缆中间接头安装方法及扩张装置 Download PDF

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Publication number
WO2022001270A1
WO2022001270A1 PCT/CN2021/085526 CN2021085526W WO2022001270A1 WO 2022001270 A1 WO2022001270 A1 WO 2022001270A1 CN 2021085526 W CN2021085526 W CN 2021085526W WO 2022001270 A1 WO2022001270 A1 WO 2022001270A1
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WIPO (PCT)
Prior art keywords
cable
intermediate joint
support part
expansion
support
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PCT/CN2021/085526
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English (en)
French (fr)
Inventor
李绍斌
彭勇
唐文博
周海
刘春春
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长缆电工科技股份有限公司
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Publication of WO2022001270A1 publication Critical patent/WO2022001270A1/zh

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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
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
    • 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
    • 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 invention belongs to the field of high-voltage power cables, and in particular relates to a method for installing an intermediate joint of a cable and an expansion device.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a method for installing an intermediate joint of a cable, which solves the problem that the intermediate joint is easily adhered to decarbonized particles during the installation process.
  • the invention also provides a cable intermediate joint expansion device.
  • the method for installing a cable intermediate joint includes the following steps: spreading one end of the intermediate joint and keeping it in a supported state; attaching the isolation layer to the insulating shielding layer of the first cable and covering the Break the insulation shielding layer; align the open end of the intermediate joint with the end to be connected of the first cable, and cover the intermediate joint on the first cable until the insulation layer of the first cable is reached Expose the other end of the intermediate joint; connect the first cable with another second cable that needs to be butted; pull the intermediate joint along the first cable toward the second cable until all the The insulating layer of the second cable enters the interior of the intermediate joint; the insulating layer is removed from the first cable.
  • the method for installing a cable intermediate joint has at least the following technical effects: during the installation of the intermediate joint, by expanding one end of the intermediate joint, it is convenient for the first cable to pass through the intermediate joint from the expanded position, reducing the need for The difficulty of the first cable penetration.
  • the decarburized particles on the insulating shielding layer can be effectively prevented from falling into the intermediate joint.
  • the insulating layer adopts a heat shrinkable tube or a cold shrinkable tube.
  • the lengths of the first cable and the second cable in the intermediate joint are the same.
  • the above-mentioned method for installing an intermediate joint of a cable further comprises the following steps: applying lubricating oil on the outer surface of the isolation layer.
  • the above-mentioned method for installing a cable intermediate joint further includes the following step: connecting the first cable and the second cable with a connecting tube.
  • An expansion device for an intermediate cable joint includes: a guide portion for spreading one end of the intermediate joint; an expansion portion disposed on the outer surface of the guide portion for supporting the intermediate joint to be The stretched end; the first support part, connected with the expansion part; the second support part, fastened on the other end of the intermediate joint; the tightening part, one end of which is connected with the first support part, and the other end It is connected with the second support part to tighten the first support part and the second support part; the tightening part, the first support part and the second support part are jointly used to assist the expansion part to support the The stretched end of the intermediate joint.
  • the cable intermediate joint expansion device has at least the following technical effects: one end of the intermediate joint can be stretched through the guide portion, so that the expansion portion has a certain support foundation. Through the expansion part, the tightening part, the first support part and the second support part, the open end of the guide part can be continuously supported to ensure that the end of the intermediate joint can still be supported after the guide part is removed, and then It can make the movement of the cable in the intermediate joint more smooth. Compared with the installation process of the traditional intermediate joint, the use of the cable intermediate joint expansion device of the embodiment of the present invention can reduce the difficulty of installation work and improve the installation efficiency.
  • the guide portion adopts a guide cone.
  • the expansion part adopts expansion tiles.
  • the first support portion and the second support portion are both connected with a plurality of eye screws, and the plurality of eye screws are used for connecting the tightening portion.
  • the tightening portion adopts an elastic connecting belt.
  • Fig. 1-1 is a working condition diagram of a cable intermediate joint expansion device according to an embodiment of the present invention (the intermediate joint has not yet been opened);
  • 1-2 is a working condition diagram of the cable intermediate joint expansion device according to the embodiment of the present invention (one end of the intermediate joint is stretched);
  • FIG. 2 is a schematic structural diagram of a first cable and an isolation layer according to an embodiment of the present invention
  • Figure 3-1 is a wiring diagram of an embodiment of the present invention (the first cable and the isolation layer have penetrated into the intermediate joint);
  • Fig. 3-2 is a wiring diagram of an embodiment of the present invention (the first cable and the second cable have been wired up);
  • Fig. 3-3 is a wiring diagram of an embodiment of the present invention (the isolation layer has been removed);
  • 3-4 are wiring diagrams of the embodiment of the present invention (the cable intermediate joint expansion device of the embodiment of the present invention has been removed).
  • the isolation layer 810, the first cable 820, the second cable 830, the connecting pipe 840, and the pressure equalizing sleeve 850 is provided.
  • the isolation layer 810 is attached to the insulating shielding layer of the first cable 820 and covers the insulating shielding layer fracture;
  • the isolation layer 810 is removed from the first cable 820 .
  • one end of the intermediate joint 600 needs to be stretched, so as to ensure that the first cable 820 can enter the intermediate joint more smoothly 600.
  • one end of the intermediate joint 600 is stretched by the cable intermediate joint expansion device of the embodiment of the present invention.
  • the insulation shielding layer and the insulation shielding layer fracture of the first cable 820 will be wrapped by the isolation layer 810 to ensure that the insulation shielding layer and the insulation shielding layer fracture will not be connected with the intermediate joint 600 . get in touch with.
  • the intermediate joint 600 will align the stretched end with the to-be-connected end of the first cable 820, and cover the first cable 820 until the end of the first cable 820 is closed.
  • the insulating layer is exposed from the other end of the intermediate joint 600 .
  • the first cable 820 and the second cable 830 can be docked.
  • the intermediate joint 600 is pulled along the first cable 820 toward the second cable 830 until the insulation layer of the first cable 820 and the second cable 830 are pulled together.
  • the insulation of the two cables 830 is placed in the protection of the intermediate joint 600 .
  • the insulating layers of the first cable 820 and the second cable 830 for wiring are completely placed in the protection of the intermediate joint 600 .
  • the installation of the intermediate joint 600 is basically completed at this time, and the isolation layer 810 only needs to be removed from the first cable 820.
  • the isolation layer 810 can be cut with a special tool, and then pulled out from the intermediate joint 600 .
  • the first cable 820 to pass through the intermediate joint 600 from the expanded position, reducing the number of first cables 820. Difficulty of cable 820 threading.
  • the insulating layer of the first cable 820 and the insulating layer of the second cable 830 are pulled into the intermediate joint 600, so that the protection function of the intermediate joint 600 can be fully exerted.
  • the isolation layer 810 is a heat-shrinkable tube or a cold-shrinkable tube.
  • the heat-shrinkable tube has the characteristics of heat shrinkage.
  • the heat-shrinkable tube is sleeved on the first cable 820, and then the heat-shrinkable tube is in close contact with the first cable 820 through a heat gun, so as to ensure the isolation layer 810. Isolation effect on the first cable 820.
  • the cold-shrinkable tube is sleeved on the first cable 820, and then the skeleton strip in the cold-shrinkable tube is removed, so as to ensure the isolation effect of the isolation layer 810 on the first cable 820.
  • the lengths of the first cable 820 and the second cable 830 in the intermediate joint 600 are the same.
  • the insulating layer of the first cable 820 and the insulating layer of the second cable 830 can be pulled into the intermediate joint 600 to achieve a certain protection effect, if the connection point of the first cable 820 and the second cable 830 If it is too close to one side of the intermediate joint 600, the insulation shielding break of the cable on this side will be easily exposed from the intermediate joint 600, which will cause a great hidden danger to the safety of electricity use.
  • the lengths of the first cable 820 and the second cable 830 in the intermediate joint 600 are the same, the safety of the first cable 820 and the second cable 830 can be protected to the greatest extent.
  • the above-mentioned method for installing a cable intermediate joint further includes the following steps: applying lubricating oil on the outer surface of the isolation layer 810 .
  • Applying lubricating oil on the surface of the isolation layer 810 can effectively reduce the friction between the isolation layer 810 and the intermediate joint 600 and the first cable 820, so that the isolation layer 810 can enter the intermediate joint 600 and finally be pulled directly from the intermediate joint 600 and the first cable 820. out.
  • the friction between the isolation layer 810 and the expansion part 200 can also be reduced.
  • the above-mentioned method for installing a cable intermediate joint further includes the following steps: applying lubricating oil on the outer surface of the first cable 820 . Applying lubricating oil on the outer surface of the first cable 820 can reduce the friction between the first cable 820 and the intermediate joint 600 . Usually, lubricating oil is applied to the outer surface of the isolation layer 810 at the same time, so that the friction with the intermediate joint 600 can be reduced to the greatest extent, and the whole installation process can be smoother.
  • the above-mentioned method for installing a cable intermediate joint further includes the following steps: applying lubricating oil on the outer surface of the second cable 830 .
  • applying lubricating oil on the outer surface of the second cable 830 the resistance when the second cable 830 is pulled into the intermediate joint 600 can be reduced, and it can also protect the cable and effectively prevent the cable from being pulled. damage occurred in the process.
  • lubricating oil is also applied to the surfaces of the guide portion 100 and the expansion portion 200, which can effectively reduce the resistance of the guide portion 100 and the expansion portion 200 in opening one end of the intermediate joint 600, Secondly, the friction between the subsequent first cable 820 and the expansion part 200 can be reduced.
  • the above-mentioned method for installing an intermediate joint of a cable further includes the following steps: installing a guide head on the conductor of the first cable 820.
  • installing the guide head on the conductor of the first cable 820 By installing the guide head on the conductor of the first cable 820, the penetration of the first cable 820 into the intermediate joint 600 is facilitated, the resistance when the first cable 820 penetrates into the intermediate joint 600 is reduced, and the entire installation can be effectively improved s efficiency.
  • the guide head is specifically mounted on the insulating layer of the first cable 820 .
  • the shape of the guide head can generally be conical, hemispherical, or the like.
  • the above-mentioned method for installing an intermediate joint of a cable further includes the following steps: connecting the first cable 820 and the second cable 830 with a connecting tube 840 .
  • the first cable 820 and the second cable 830 are connected by the connecting tube 840, on the one hand, the strength after the connection can be ensured, which can facilitate the pulling of the first cable 820 and the second cable 830, and on the other hand, the first cable can be ensured at the same time.
  • the 820 and the second cable 830 are butted, the electrical conductivity will not be weakened.
  • the pressure equalizing sleeve 850 is used to assist the connection, which can make the connection more reliable.
  • the isolation layer 810 is a polytetrafluoroethylene tape or a nylon tape.
  • Nylon and PTFE are the more common materials, and they are relatively inexpensive and easy to mass-produce.
  • the isolation layer 810 needs to rub against the intermediate joint 600 and the cable for a long time, it is prone to loss, and the use of inexpensive nylon or PTFE can effectively reduce the cost.
  • the surface of the polytetrafluoroethylene tape or the nylon tape is also relatively smooth, which can effectively reduce the frictional force between the isolation layer 810 and the intermediate joint 600 and the first cable 820 .
  • the cable intermediate joint expansion device includes: a guide part 100 , an expansion part 200 , a first support part 300 , a second support part 400 , and a tightening part 500 .
  • the guide part 100 is used to stretch one end of the intermediate joint 600 ;
  • the expansion part 200 is arranged on the outer surface of the guide part 100 and used to support the opened end of the intermediate joint 600 ;
  • the first support part 300 is connected to the expansion part 200 ;
  • the second support part 400 is fastened to the other end of the intermediate joint 600;
  • the tightening part 500 is connected with the first support part 300 at one end and the second support part 400 at the other end for tightening the first support part 300 and the second support part 400;
  • the tightening part 500, the first support part 300 and the second support part 400 are jointly used to assist the expansion part 200 to support the stretched end of the intermediate joint 600.
  • the inner surface of the intermediate joint 600 is a cylindrical structure.
  • the expansion part 200 is an annular structure and can closely fit with the rear end of the guide part 100 .
  • the expansion part 200 is fixed to the rear end of the guide part 100 so that the guide part 100 and the expansion part 200 are integrated.
  • the guide part 100 and the expansion part 200 are formed as a whole for spreading one end of the intermediate joint 600 , and the second support part 400 is fixed on the other end of the intermediate joint 600 .
  • the first support part 300 is connected with the expansion part 200, and after the first support part 300 and the second support part 400 are connected by the tightening part 500, a stable tension can be formed between the first support part 300 and the second support part 400 With this pulling force, it can be ensured that after the guide part 100 is removed, one end of the intermediate joint 600 can still be supported by the expansion part 200 , the first support part 300 , the second support part 400 and the tightening part 500 . After the guide portion 100 is removed, the stretched end of the middle connector 600 can allow the first cable 820 to easily pass through the middle.
  • one end of the intermediate joint 600 can be stretched through the guide portion 100 , so that the expansion portion 200 has a certain support foundation.
  • the tightening part 500 , the first support part 300 and the second support part 400 the open end of the guide part 100 can be continuously supported to ensure that the intermediate joint can still be removed after the guide part 100 is removed.
  • One end of the 600 is supported, so that the cable can move more smoothly in the intermediate joint 600 .
  • the use of the cable intermediate joint expansion device according to the embodiment of the present invention can reduce the difficulty of installation work and improve the installation efficiency.
  • the guide portion 100 adopts a guide cone.
  • the guide portion 100 adopts the guide cone not to guide the first cable 820, but to better spread the intermediate joint 600, so the volume of the guide portion 100 will be larger.
  • the tapered shape By adopting the tapered shape, one end of the intermediate joint 600 can be better stretched.
  • both the first support portion 300 and the second support portion 400 adopt a Hough structure.
  • the Hough structure refers to a structure in which the original one-piece structure is divided into two combinations. If the first support part 300 and the second support part 400 adopt this structure, the first support part 300 and the second support part 400 can be quickly disassembled without reducing their structural stability.
  • the first support portion 300 and the second support portion 400 are directly fastened with bolts, and the use of the bolts can facilitate the disassembly of the first support portion 300 and the second support portion 400 after the installation of the intermediate joint 600 is completed.

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Abstract

一种电缆中间接头（600）安装方法及扩张装置，电缆中间接头（600）安装方法包括以下步骤：将中间接头（600）的一端撑开并保持支撑状态；将隔离层（810）贴合在第一电缆（820）的绝缘屏蔽层断口上；使所述中间接头（600）套在所述第一电缆（820）上，直至所述第一电缆（820）的绝缘层在所述中间接头（600）的另一端露出；将第一电缆（820）与另一需要对接的第二电缆（830）连接；将中间接头（600）沿第一电缆（820）往第二电缆（830）的方向拉动，直至第一电缆（820）和第二电缆（830）的绝缘层进入中间接头（600）的内部；将隔离层（810）从第一电缆（820）上去除。该方法通过将中间接头（600）的一端进行扩张，减少了第一电缆（820）穿入的难度。通过在第一电缆（820）的绝缘屏蔽层的端口上布置隔离层（810），可以有效的避免绝缘屏蔽层上的脱炭颗粒落入中间接头（600）中。

Description

一种电缆中间接头安装方法及扩张装置 技术领域
本发明属于高压电力电缆领域，具体涉及一种电缆中间接头安装方法及扩张装置。
背景技术
随着城市化的建设以及电量需求的剧增，远距离的高压输电建设也越来越多，电缆附件的需求量也越来越大。在电缆附件中，用于电缆对接的中间接头更是难以避免的需要大量使用。
对于高压电力电缆中间接头来说，一般有两种安装方式，一种是预扩张，一种是滑装式安装。当使用滑装式安装时，在安装过程中，中间接头主体会与电缆的绝缘屏蔽层直接接触，而电缆绝缘屏蔽层上的脱炭颗粒很容易粘附到中间接头内部，影响中间接头与电缆接触面的性能，进而引发电缆线路故障。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种电缆中间接头安装方法，解决了中间接头在安装过程中容易粘附脱炭颗粒的问题。本发明还提出了一种电缆中间接头扩张装置。
根据本发明第一方面实施例的电缆中间接头安装方法，包括以下步骤：将中间接头的一端撑开并保持支撑状态；将隔离层贴合在第一电缆的绝缘屏蔽层上并盖过所述绝缘屏蔽层断口；使所述中间接头撑开的一端对准所述第一电缆的待连接端，并将所述中间接头 套在所述第一电缆上，直至所述第一电缆的绝缘层在所述中间接头的另一端露出；将所述第一电缆与另一需要对接的第二电缆连接；将所述中间接头沿所述第一电缆往所述第二电缆的方向拉动，直至所述第二电缆的绝缘层进入所述中间接头的内部；将隔离层从所述第一电缆上去除。
根据本发明实施例的电缆中间接头安装方法，至少具有如下技术效果：在中间接头的安装过程中，通过将中间接头的一端进行扩张，可以便于第一电缆从扩张位置穿过中间接头，减少了第一电缆穿入的难度。通过在第一电缆的绝缘屏蔽层上布置一定长度的隔离层，可以有效的避免绝缘屏蔽层上的脱炭颗粒落入中间接头中。第一电缆和所述第二电缆对接结束之后，将第一电缆的绝缘层和所述第二电缆的绝缘层拉入中间接头中，可以充分的发挥中间接头的保护作用。
根据本发明的一些实施例，所述隔离层采用热缩管或冷缩管。
根据本发明的一些实施例，所述中间接头安装完成后，所述第一电缆和所述第二电缆在所述中间接头中的长度一致。
根据本发明的一些实施例，上述电缆中间接头安装方法还包括以下步骤：在所述隔离层的外表面涂抹润滑油。
根据本发明的一些实施例，上述电缆中间接头安装方法还包括以下步骤：使用连接管连接所述第一电缆和所述第二电缆。
根据本发明第二方面实施例的电缆中间接头扩张装置，包括：导向部，用于撑开中间接头的一端；扩张部，设置于所述导向部的外表面，用于支撑所述中间接头被撑开的一端；第一支撑部，与所 述扩张部连接；第二支撑部，紧固在所述中间接头的另一端；收紧部，其一端与所述第一支撑部连接，另一端与所述第二支撑部连接，用于拉紧所述第一支撑部和第二支撑部；所述收紧部、第一支撑部和第二支撑部共同用于辅助所述扩张部支撑所述中间接头被撑开的一端。
根据本发明实施例的电缆中间接头扩张装置，至少具有如下技术效果：通过导向部可以实现将中间接头的一端撑开，进而使得扩张部具备一定的支撑基础。通过扩张部、收紧部、第一支撑部和第二支撑部可以实现将导向部被撑开的一端进行持续性支撑，以保证在导向部拆除之后仍然能够将中间接头的一端支撑住，进而可以使得电缆在中间接头中移动能够更为的顺畅。相较于传统中间接头的安装过程而言，采用本发明实施例的电缆中间接头扩张装置可以降低安装工作难度，提高安装效率。
根据本发明的一些实施例，所述导向部采用导向锥。
根据本发明的一些实施例，所述扩张部采用扩张瓦。
根据本发明的一些实施例，所述第一支撑部和第二支撑部上皆连接有多个吊环螺钉，多个所述吊环螺钉用于连接所述收紧部。
根据本发明的一些实施例，所述收紧部采用弹性连接带。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1-1是本发明实施例的电缆中间接头扩张装置的工况图(中间接头还未撑开)；
图1-2是本发明实施例的电缆中间接头扩张装置的工况图(中间接头一端被撑开)；
图1-3是本发明实施例的电缆中间接头扩张装置的工况图(导向部已拆除)；
图2是本发明实施例的第一电缆与隔离层的结构示意图；
图3-1是本发明实施例的接线工况图(第一电缆与隔离层已穿入中间接头)；
图3-2是本发明实施例的接线工况图(第一电缆与第二电缆已接线完成)；
图3-3是本发明实施例的接线工况图(隔离层已去除)；
图3-4是本发明实施例的接线工况图(本发明实施例的电缆中间接头扩张装置已去除)。
附图标记：
导向部100、
扩张部200、
第一支撑部300、
第二支撑部400、
收紧部500、
开中间接头600、
吊环螺钉700、
隔离层810、第一电缆820、第二电缆830、连接管840、均压 套850。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，如果有描述到第一、第二、第三、第四等等只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
下面参考图1-1至图3-4描述根据本发明第一方面实施例的电缆中间接头安装方法。
根据本发明实施例的电缆中间接头安装方法，包括以下步骤：
将中间接头600的一端撑开并保持支撑状态；
将隔离层810贴合在第一电缆820的绝缘屏蔽层上并盖过所述绝缘屏蔽层断口；
使中间接头600撑开的一端对准第一电缆820的待连接端，并将中间接头600套在第一电缆820上，直至第一电缆820的绝缘层在中间接头600的另一端露出；
将第一电缆820与另一需要对接的第二电缆830连接；
将中间接头600沿第一电缆820往第二电缆830的方向拉动，直至第二电缆830的绝缘层进入中间接头600的内部；
将隔离层810从第一电缆820上去除。
参考图1-1至图3-4，在将第一电缆820穿入中间接头600之前，需要先将中间接头600的一端撑开，这样可以保证第一电缆820能够更为顺畅的进入中间接头600。在本发明一些实施例中，是通过本发明实施例的电缆中间接头扩张装置将中间接头600的一端撑开。
为了保证第一电缆820在穿入中间接头600和接线的过程中不会有绝缘屏蔽层上的脱碳颗粒粘附到中间接头600内部，特别是绝缘屏蔽层断口打磨处理后的脱碳颗粒，会在第一电缆820穿入中间接头600之前，使用隔离层810将第一电缆820的绝缘屏蔽层及绝缘屏蔽层断口进行包裹，以保证绝缘屏蔽层及绝缘屏蔽层断口不会与中间接头600接触。
隔离层810包裹第一电缆820的绝缘屏蔽层断口之后，中间接头600会将撑开的一端对准第一电缆820的待连接端，并套在第一电缆820上，直到第一电缆820的绝缘层从中间接头600的另一端露出。此时可以开始对第一电缆820和第二电缆830进行对接，对接完成之后，将中间接头600沿第一电缆820往第二电缆830的方向拉动，直到将第一电缆820的绝缘层和第二电缆830的绝缘层置于中间接头600的保护中。在实际操作时，是将第一电缆820和第二电缆830用于接线的绝缘层部分都完全置入中间接头600的保护中。
完成上述步骤之后，此时中间接头600的安装基本结束，只需 要将隔离层810从第一电缆820上去除即可。在实际操作时，隔离层810可以用专用刀具划开，再从中间接头600中拽出。
根据本发明实施例的电缆中间接头安装方法，在中间接头600的安装过程中，通过将中间接头600的一端进行扩张，可以便于第一电缆820从扩张位置穿过中间接头600，减少了第一电缆820穿入的难度。通过在第一电缆820的绝缘屏蔽层上布置一定长度的隔离层810，可以有效的避免绝缘屏蔽层上的脱炭颗粒落入中间接头600中。第一电缆820和第二电缆830对接结束之后，将第一电缆820的绝缘层和第二电缆830的绝缘层拉入中间接头600中，可以充分的发挥中间接头600的保护作用。
在本发明的一些实施例中，隔离层810采用热缩管或冷缩管。热缩管具备热收缩的特性，在实际操作时，将热缩管套在第一电缆820上，然后通过热风枪使热缩管与第一电缆820紧密接触即可，这样可以保证隔离层810对第一电缆820的隔离效果。同理，在实际操作时，将冷缩管套在第一电缆820上，再抽掉冷缩管内的骨架条，就可以保证隔离层810对第一电缆820的隔离效果。
在本发明的一些实施例中，中间接头600安装完成后，第一电缆820和第二电缆830在中间接头600中的长度一致。在实际操作时，虽然将第一电缆820的绝缘层和第二电缆830的绝缘层拉入中间接头600中即可达到一定的保护效果，但是如果第一电缆820和第二电缆830的连接点过于靠近中间接头600的一侧，则会造成这一侧电缆的绝缘屏蔽断口容易从中间接头600中露出，这样则会对用电安全造成很大的隐患。而使第一电缆820和第二电缆830在中 间接头600中的长度一致，则可以最大程度保护第一电缆820和第二电缆830的安全。
在本发明的一些实施例中，上述电缆中间接头安装方法还包括以下步骤：在隔离层810的外表面涂抹润滑油。在隔离层810表面涂抹润滑油，可以有效的减小隔离层810与中间接头600和第一电缆820的摩擦，便于隔离层810进入中间接头600和最后从中间接头600与第一电缆820直接拉出。此外，也可以减小隔离层810与扩张部200的摩擦。
在本发明的一些实施例中，上述电缆中间接头安装方法还包括以下步骤：在第一电缆820的外表面涂抹润滑油。在第一电缆820的外表面涂抹润滑油可以减小第一电缆820与中间接头600之间的摩擦。通常会同时在隔离层810的外表面涂抹润滑油，这样更可以最大程度的减小与中间接头600的摩擦，使整个安装过程更为顺畅。
在本发明的一些实施例中，上述电缆中间接头安装方法还包括以下步骤：在第二电缆830的外表面涂抹润滑油。通过在第二电缆830的外表面涂抹润滑油，可以减小在将第二电缆830拉入中间接头600中时的阻力，同样也可以起到保护电缆的作用，有效的防止电缆在拉拽的过程中发生损坏。
在本发明的一些实施例中，在导向部100和扩张部200的表面也会涂抹润滑油，这样首先可以有效的减小导向部100和扩张部200在将中间接头600一端撑开的阻力，其次可以减小后续第一电缆820与扩张部200之间的摩擦。
在本发明的一些实施例中，上述电缆中间接头安装方法还包括 以下步骤：在第一电缆820的导体上安装导向头。通过在第一电缆820的导体上安装导向头可以便于第一电缆820在中间接头600中穿入，减小了第一电缆820在中间接头600中穿入时的阻力，可以有效的提高整个安装的效率。导向头具体安装在第一电缆820的绝缘层上。导向头的形状通常可以采用锥形、半球形等等。
在本发明的一些实施例中，上述电缆中间接头安装方法还包括以下步骤：使用连接管840连接第一电缆820和第二电缆830。通过连接管840连接第一电缆820和第二电缆830，一方面可以保证连接之后的强度，可以便于对第一电缆820和第二电缆830进行拉拽，另一方面，可以同时保证第一电缆820和第二电缆830对接之后的导电能力不会减弱。通常在使用连接管840连接之后，再使用均压套850辅助连接，可以使连接更为牢靠。
在本发明的一些实施例中，隔离层810采用聚四氟乙烯带或尼龙带。尼龙和聚四氟乙烯是较为常见的材料，且价格较为低廉，便于进行批量生产。同时，因为隔离层810本身需要长时间与中间接头600和电缆进行摩擦，因此容易发生损耗，而使用价格低廉的尼龙或聚四氟乙烯则可以有效的降低成本。此外，聚四氟乙烯带或尼龙带的表面也比较光滑，可以有效的减小隔离层810与中间接头600和第一电缆820的之间的摩擦力。
根据本发明第二方面实施例的电缆中间接头扩张装置，包括：导向部100、扩张部200、第一支撑部300、第二支撑部400、收紧部500。导向部100，用于撑开中间接头600的一端；扩张部200，设置于导向部100的外表面，用于支撑中间接头600被撑开的一端； 第一支撑部300，与扩张部200连接；第二支撑部400，紧固在中间接头600的另一端；收紧部500，其一端与第一支撑部300连接，另一端与第二支撑部400连接，用于拉紧第一支撑部300和第二支撑部400；收紧部500、第一支撑部300和第二支撑部400共同用于辅助扩张部200支撑中间接头600被撑开的一端。
参考图1-1至图3-4，中间接头600的内表面为一个圆柱形结构。扩张部200是一个环形结构能够与导向部100的尾端紧密贴合。将扩张部200固定在导向部100的尾端，使导向部100、扩张部200成为一个整体。导向部100和扩张部200形成的整体用于撑开中间接头600的一端，第二支撑部400固定在中间接头600的另一端。第一支撑部300与扩张部200连接，第一支撑部300和第二支撑部400通过收紧部500连接后，可以在第一支撑部300和第二支撑部400之间形成一个稳定的拉力，通过这个拉力可以保证在导向部100拆除之后，仍然可以通过扩张部200、第一支撑部300、第二支撑部400和收紧部500将中间接头600的一端继续支撑开。而导向部100拆除之后，中间接头600被撑开的一端就可以让第一电缆820从中间轻易的穿过。
下面简述一下本发明实施例的电缆中间接头扩张装置的使用过程。
在需要进行电缆连接时，先将导向部100、扩张部200、第一支撑部300进行组装并选择好需要置入导向部100的一端，然后将第二支撑部400固定在中间接头600的另一端。然后使用手板葫芦将导向部100和扩张部200形成的整体慢慢的带入中间接头600的一 端，在进入过程中，整个中间接头600的内表面会被慢慢的撑开，直至扩张部200的主体部分进行中间接头600。然后采用收缩部将第一支撑部300和第二支撑部400进行临时连接。之后将导向部100拆除，此时，可以将已经套上隔离层810的第一电缆820从中间接头600撑开的一端穿入，直到在另一端露出连接头。最后，完成第一电缆820和第二电缆830的连接，再将第一电缆820的绝缘层和第二电缆830的绝缘层拉入中间接头600中。安装结束后，拆除隔离层810、导向部100、扩张部200、第一支撑部300、第二支撑部400、收紧部500即可。
根据本发明实施例的电缆中间接头扩张装置，通过导向部100可以实现将中间接头600的一端撑开，进而使得扩张部200具备一定的支撑基础。通过扩张部200、收紧部500、第一支撑部300和第二支撑部400可以实现将导向部100被撑开的一端进行持续性支撑，以保证在导向部100拆除之后仍然能够将中间接头600的一端支撑住，进而可以使得电缆在中间接头600中移动能够更为的顺畅。相较于传统中间接头600的安装过程而言，采用本发明实施例的电缆中间接头扩张装置可以降低安装工作难度，提高安装效率。
在本发明的一些实施例中，导向部100采用导向锥。导向部100的形式有很多，可以采用锥形、半球等等。在本发明的实施例中，导向部100采用导向锥并不是为了对第一电缆820进行导向，而是为了更好的撑开中间接头600，因此导向部100的体积会较大。而采用锥形，则可以更好的将中间接头600的一端撑开。
在本发明的一些实施例中，扩张部200采用扩张瓦。扩张部200 采用扩张瓦一方面可以更好的贴近导向部100，另一方面也便于在导向部100拆除之后能够更好的支撑中间接头600的一端。
在本发明的一些实施例中，第一支撑部300和第二支撑部400上皆连接有多个吊环螺钉700，多个吊环螺钉700用于连接收紧部500。参考图1-1至图1-3，第一支撑部300和第二支撑部400上皆设置多个螺孔，多个螺孔可以用来安装多个吊环螺钉700，吊环螺钉700在第一支撑部300和第二支撑部400的上安装需要对称设置，这样可以保障后续收紧部500连接第一支撑部300和第二支撑部400的稳定性。
在本发明的一些实施例中，收紧部500采用弹性连接带。采用弹性的相对于采用刚性的连接材料而言，可以更为便捷的连接，且弹性连接会是连接更为的牢固。
在本发明的一些实施例中，第一支撑部300和第二支撑部400皆采用哈夫式结构。哈夫式结构是指原本一体的结构剖成两个组合的结构。第一支撑部300和第二支撑部400如果采用这种结构，则可以在不减小本身结构稳定性的同时，能够便于对第一支撑部300和第二支撑部400进行快速的拆卸。第一支撑部300和第二支撑部400直接使用螺栓进行紧固，使用螺栓可以更加便于在中间接头600安装完成后将第一支撑部300和第二支撑部400进行拆卸。
在本发明的一些实施例中，扩张部200采用哈夫式结构。哈夫式结构是指原本一体的结构剖成两个组合的结构。扩张部200采用这种结构，则可以在不减小本身结构稳定性的同时对中间接头600进行支撑。此外，采用哈夫式结构便于对扩张部200进行拆卸。
在本发明的一些实施例中，第一支撑部300和第二支撑部400采用金属材料。金属材质具有较好的硬度，这样可以保证在收紧部500通过吊环螺钉700对第一支撑部300和第二支撑部400进行牵引时，能够不发生形变。在本发明的一些实施例中，第一支撑部300和第二支撑部400具体采用不锈钢、铝合金或黄铜等材质。
在本发明的一些实施例中，第一支撑部300和第二支撑部400采用硬质非金属材料。考虑到需要通过第一支撑部300和第二支撑部400对隔离层810进行牵引，因此，即使在第一支撑部300和第二支撑部400采用非金属材料时，也需要选择硬度较高的材质。
在本发明的一些实施例中，硬质非金属材料材采用塑料、陶瓷、尼龙或赛钢等。尼龙或赛钢的价格较为便宜且硬度较高，适合规模化生产。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上述结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (10)

  1. 一种电缆中间接头安装方法，其特征在于，包括以下步骤：
    将中间接头的一端撑开并保持支撑状态；
    将隔离层贴合在第一电缆的绝缘屏蔽层上并盖过所述绝缘屏蔽层断口；
    使所述中间接头撑开的一端对准所述第一电缆的待连接端，并将所述中间接头套在所述第一电缆上，直至所述第一电缆的绝缘层在所述中间接头的另一端露出；
    将所述第一电缆与另一需要对接的第二电缆连接；
    将所述中间接头沿所述第一电缆往所述第二电缆的方向拉动，直至所述第二电缆的绝缘层进入所述中间接头的内部；
    将隔离层从所述第一电缆上去除。
  2. 根据权利要求1所述的电缆中间接头安装方法，其特征在于，所述隔离层采用热缩管或冷缩管。
  3. 根据权利要求1所述的电缆中间接头安装方法，其特征在于，所述中间接头安装完成后，所述第一电缆和所述第二电缆在所述中间接头中的长度一致。
  4. 根据权利要求1所述的电缆中间接头安装方法，其特征在于，还包括以下步骤：在所述隔离层的外表面涂抹润滑油。
  5. 根据权利要求1所述的电缆中间接头安装方法，其特征在于，还包括以下步骤：使用连接管连接所述第一电缆和所述第二电缆。
  6. 一种电缆中间接头扩张装置，其特征在于，包括：
    导向部，用于撑开中间接头的一端；
    扩张部，设置于所述导向部的外表面，用于支撑所述中间接头被撑开的一端；
    第一支撑部，与所述扩张部连接；
    第二支撑部，紧固在所述中间接头的另一端；
    收紧部，其一端与所述第一支撑部连接，另一端与所述第二支撑部连接，用于拉紧所述第一支撑部和第二支撑部；所述收紧部、第一支撑部和第二支撑部共同用于辅助所述扩张部支撑所述中间接头被撑开的一端。
  7. 根据权利要求6所述的电缆中间接头扩张装置，其特征在于，所述导向部采用导向锥。
  8. 根据权利要求6所述的电缆中间接头扩张装置，其特征在于，所述扩张部采用扩张瓦。
  9. 根据权利要求6所述的电缆中间接头扩张装置，其特征在于，所述第一支撑部和第二支撑部上皆连接有多个吊环螺钉，多个所述吊环螺钉用于连接所述收紧部。
  10. 根据权利要求6或9所述的电缆中间接头扩张装置，其特征在于，所述收紧部采用弹性连接带。
PCT/CN2021/085526 2020-07-03 2021-04-06 一种电缆中间接头安装方法及扩张装置 WO2022001270A1 (zh)

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CN112117714A (zh) * 2020-07-03 2020-12-22 长缆电工科技股份有限公司 一种电缆中间接头安装方法及扩张装置
CN114188897A (zh) * 2021-11-25 2022-03-15 长缆电工科技股份有限公司 一种电缆附件与电缆金属护套的处理方法

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