WO2017024931A1 - 快速插拔电缆分支箱 - Google Patents

快速插拔电缆分支箱 Download PDF

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Publication number
WO2017024931A1
WO2017024931A1 PCT/CN2016/090844 CN2016090844W WO2017024931A1 WO 2017024931 A1 WO2017024931 A1 WO 2017024931A1 CN 2016090844 W CN2016090844 W CN 2016090844W WO 2017024931 A1 WO2017024931 A1 WO 2017024931A1
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WO
WIPO (PCT)
Prior art keywords
cable
quick
box body
linear
terminal
Prior art date
Application number
PCT/CN2016/090844
Other languages
English (en)
French (fr)
Inventor
龚冰
秦勇明
何建军
许箴
Original Assignee
国网江苏省电力公司常州供电公司
国网江苏省电力公司
国家电网公司
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
Priority claimed from CN201520607761.3U external-priority patent/CN204835464U/zh
Priority claimed from CN201510495701.1A external-priority patent/CN105071335B/zh
Application filed by 国网江苏省电力公司常州供电公司, 国网江苏省电力公司, 国家电网公司 filed Critical 国网江苏省电力公司常州供电公司
Priority to US15/524,928 priority Critical patent/US9997897B2/en
Publication of WO2017024931A1 publication Critical patent/WO2017024931A1/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
    • H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/622—Screw-ring or screw-casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
    • 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
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/52—Mobile units, e.g. for work sites
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B7/00—Enclosed substations, e.g. compact substations
    • H02B7/06—Distribution substations, e.g. for urban network

Definitions

  • the invention relates to the field of power supply line bypass operation equipment, and particularly relates to a quick insertion and extraction cable branch box for a bypass operation maintenance ring network cabinet.
  • bypass cable and related equipment are generally used to quickly connect a bypass power supply line on the site, overhaul or repair the cable line segment or equipment, and replace the original line by bypassing the bypass line.
  • the power is supplied to the user.
  • the construction personnel maintains, repairs and replaces the original cable line to be repaired or replaced in the power outage state.
  • bypass cable system there are two main difficulties in the construction of the bypass cable system: First, there must be a power point: generally, it is connected to the nearby ring network cabinet; second, the bypass cable laying environment is better, not Frequent crossing of the road.
  • an adapter device By connecting the original ring network cabinet incoming cable with the bypass cable, the original laid power cable can be used instead of the bypass cable to solve the problem. Power point and long distance laying problems.
  • Most of the domestic distribution network medium voltage 10kV lines use XLPE insulated power cables.
  • the exposed cable indoor terminal or the T-shaped cable terminal with the terminal block is generally installed.
  • the connection between the indoor cable terminal and the ring network cabinet is Bolted.
  • the bypass cable operating equipment uses a flexible power cable with a quick-swap bypass cable termination at the end.
  • the cable branch box is a commonly used device for tapping and transferring cables in the power supply line.
  • the conventional cable branch box cannot be directly connected to the bypass cable due to structural limitations.
  • the purpose of the invention is to provide a quick-swapping cable branch box for quickly connecting the incoming cable and the bypass cable of the ring network cabinet, in order to realize the complicated environment in the field, in order to solve the practical problems in the maintenance work of the ring network cabinet.
  • the incoming cable of the ring network cabinet is directly and electrically connected with the bypass cable device to form a temporary bypass cable power supply line, so that the ring network cabinet can be repaired or repaired in the case of power failure, and the power supply to the user is not affected.
  • the quick-swapping cable branch box of the present invention which has the following structural features, including a box body, an insulator, a copper row, a connecting wire, a T-shaped cable terminal, a straight wire joint and an insulating partition;
  • the above-mentioned insulator, copper row, connecting wire and T-shaped cable terminal are arranged in the box body; the insulator, the copper row, the T-shaped cable terminal and the linear adapter are respectively provided with three identical structures; the connecting wires are provided with three;
  • the copper row has an integrated front terminal and a rear terminal; three copper rows are fixedly arranged on each of the three insulators;
  • the above linear adapter includes a conductive rod, an insulating layer, a quick card joint and an outer casing;
  • the conductive rod comprises an integrally connected front cylinder and a rear cylinder; and the diameter of the front cylinder of the conductive rod is larger than the diameter of the rear cylinder; the front cylinder of the conductive rod is provided with a screw hole recessed from the front to the back along the axis. a screw thread is fixed in the screw hole of the conductive rod; the rear cylinder body of the conductive rod is provided with a stepped bypass cable insertion hole recessed from the rear to the front along the axis, and the front end of the bypass cable insertion hole Elastic fastening ring;
  • the insulating layer is coated on the outer end surface of the conductive rod; the insulating layer is integrally connected from the front to the rear, a hollow first truncated cone portion, a second truncated cone portion, a first cylindrical portion, a second cylindrical portion and a third cylinder a portion; the outer diameter of the first truncated portion is smaller than the outer diameter of the second truncated portion; the outer diameters of the first cylindrical portion, the second cylindrical portion, and the third cylindrical portion are sequentially decreased;
  • a quick card connector is sleeved at a rear end of the second truncated portion of the insulating layer and a rear portion of the third cylindrical portion of the insulating layer protrudes rearward through the quick card joint;
  • the outer casing is fixedly mounted on the second truncated portion of the insulating layer a peripheral surface and a fixed connection with the front end of the quick card connector;
  • the above-mentioned linear adapter is fixedly disposed on the lower rear end panel of the box through the outer casing; the quick card joint of the linear adapter is located outside the lower rear end panel of the box; the three linear adapters respectively pass through the respective conductive rods
  • the screw teeth are fixedly connected with the corresponding one T-shaped cable terminal bolts; the upper ends of the three T-shaped cable terminals are respectively electrically connected to the rear terminals of the three copper bars through one connecting wire;
  • the insulating spacer is fixedly disposed in the box body and located in front of the T-shaped cable terminal and the connecting wire;
  • the front terminal blocks of the three copper bars are connected to the A, B and C three-phase wires of the incoming cable of the ring network cabinet; the three linear adapters are fast through the quick card connector and the three bypass cable connectors. The connector is snapped.
  • the whole box body has a rectangular parallelepiped shape, and the inside of the box body is hollow; the upper part of the box body is provided with an openable box door, and the box door is provided with a box cover lock; There is a heat dissipation window; the lower front end surface of the box body is provided with a cable opening and closing door; and four rollers with foot brakes are fixedly mounted at the four corners of the bottom of the box body.
  • T-shaped cable terminal is a standard type bolt-on T-shaped cable terminal.
  • the quick card connector of the above-mentioned linear adapter is a standard type quick card connector, and the front end of the quick card connector has a mounting fixing ring;
  • the outer casing is composed of two parts which are symmetrical vertically; the outer shape after the outer casing is mounted Square shape; the inner shape of the outer casing cooperates with the outer shape of the second truncated portion of the insulating layer; the inner rear end of the outer casing is provided with a fixing ring sleeve groove; the quick card joint is fixed through the mounting ring of the fixing ring and the outer casing The mating is fixedly connected to the outer casing.
  • the insulating layer of the linear adapter described above is made of an EPDM rubber material having a compressive stress of 8-12 kg/cm 2 .
  • Figure 1 is a schematic view showing the external structure of the present invention
  • Figure 2 is a rear elevational view of Figure 1;
  • Figure 3 is a right side view of Figure 1;
  • FIG. 4 is a schematic view of the internal structure of the present invention, which also schematically shows the connection relationship between the incoming cable and the bypass cable of the ring network cabinet in use;
  • Figure 5 is a schematic structural view of the linear adapter of Figure 4.
  • Figure 6 is an axial cross-sectional view of Figure 5;
  • Fig. 7 is a schematic view showing the structure of a main member in a split state of the linear adapter shown in Fig. 5.
  • the cabinet 1 the box door 11, the lid lock 12, the heat dissipation window 13, the cable passing through the door 14, the roller 15,
  • Linear adapter 6 conductive rod 61, screw 61-1, bypass cable insertion hole 61-2, elastic fastening ring 61-3; insulating layer 62, first circular table portion 62-1, second circular table portion 62 -2, first cylindrical portion 62-3, second cylindrical portion 62-4, third cylindrical portion 62-5, quick card joint 63, mounting retaining ring 63-1, outer casing 64, retaining ring sleeve groove 64-1;
  • the quick-swapping cable branch box of the present embodiment mainly comprises a box body 1, an insulator 2, a copper row 3, a connecting wire 4, a T-shaped cable terminal 5, a linear adapter 6 and an insulating spacer. 7 composition.
  • the box body 1 has a rectangular parallelepiped shape as a whole, and the inside of the box body 1 is hollow.
  • the outer dimension of the box body 1 is preferably 680 mm ⁇ 535 mm ⁇ 1150 mm (length ⁇ width ⁇ height) according to the practical experience of the working body, so as to adapt to the ring network cabinet maintenance. When the working site is small and irregular, the original length of the ring network cabinet is not enough for the actual working environment.
  • the upper front surface of the casing 1 is provided with an openable door 11 which can be locked by the cover lock 12; the lower side of the casing 1 is provided with a heat dissipation window 13; the lower front surface of the casing 1
  • the purpose of the roller 15 is to facilitate the movement of the box 1 during operation, which is convenient for maintenance work.
  • Three insulators 2 are provided, and the three insulators 2 are fixedly disposed on the upper rear side in the casing 1.
  • the copper bars 3 are provided with three identical structures, and the three copper bars 3 are fixedly disposed on each of the three insulators 2; the copper bars 3 have integrally connected front terminal blocks 31 and rear terminal blocks 32.
  • the T-shaped cable terminal 5 is fixedly disposed in the lower portion of the casing 1; the T-shaped cable terminal 5 is a standard bolt-on T-shaped cable terminal; the T-shaped cable terminal 5 is provided with three identical structures; the three T The upper ends of the cable terminals 5 are electrically connected in one-to-one correspondence with the rear terminals 32 of the three copper bars 3 by one connecting wire 4, respectively.
  • the linear adapter 6 is provided with three identical structures, and the three linear adapters 6 are fixedly disposed on the lower rear end panel of the casing 1.
  • the linear adapter 6 is mainly composed of a conductive rod 61, an insulating layer 62, a quick card joint 63, and a casing 64.
  • the conductive rod 61 is integrally formed by the front cylinder and the rear cylinder, and the diameter of the front cylinder of the conductive rod 61 is larger than the diameter of the rear cylinder; the front cylinder of the conductive rod 61 is provided with a thread recessed from the front to the rear along the axis.
  • the threaded hole of the conductive rod 61 is fixedly provided with a screw 61-1 for fixed connection with the T-shaped cable terminal 5; the rear cylinder of the conductive rod 61 is provided with a stepped shape recessed from the rear to the front along the axis.
  • the bypass cable insertion hole 61-2 and the bypass cable insertion hole 61-2 are provided with two elastic fastening rings 61-3 disposed in front and rear.
  • an ethylene propylene diene rubber material having a compressive stress of 8 to 12 kg/cm 2 is preferably used.
  • the insulating layer 62 is coated on the outer end surface of the conductive rod 61.
  • the insulating layer 62 is an integral member, and the insulating layer 62 is a hollow first circular land portion 62-1, a second circular table portion 62-2, a first cylindrical portion 62-3, and a second cylindrical portion which are integrally connected in order from the front to the rear.
  • the outer diameter of the first circular table portion 62-1 is smaller than the outer diameter of the second circular table portion 62-2; the first cylindrical portion 62-3, the second cylindrical portion The outer diameters of 62-4 and the third cylindrical portion 62-5 are sequentially decreased.
  • the quick card connector 63 employs a standard quick card connector in this embodiment, and the front end of the quick card connector 63 has a mounting fixing ring 63-1.
  • the outer casing 64 is a steel member, and the outer casing 64 is composed of two upper and lower symmetrical portions.
  • the outer shape of the outer casing 64 after installation is square; the inner shape of the outer casing 64 matches the outer shape of the second circular land portion 62-2 of the insulating layer 62;
  • the inner rear end of the outer casing 64 is provided with a fixing ring sleeve groove 64-1; when installed, the quick card joint 63 is sleeved at the rear end of the second circular table portion 62-2 of the insulating layer 62 and the third cylinder of the insulating layer 62
  • the rear portion of the portion 62-5 protrudes rearward through the quick card joint 63; the mounting fixing ring 63-1 of the quick card joint 63 is placed in the fixing ring sleeve groove 64-1 of the outer casing 64;
  • the two parts are fixedly connected to fix the quick card joint 63.
  • the foregoing linear adapter 6 is fixedly disposed on the lower rear end panel of the casing 1 in such a manner that the outer casing 64 of the linear adapter 6 is fixedly connected with the lower rear end panel of the casing 1; the quick card joint 63 is located in the casing 1 The outside of the lower rear panel.
  • the three linear adapters 6 are bolted and fixed to the respective one of the T-shaped cable terminals 5 through the respective teeth 61-1 in the respective conductive rods 61, and the nuts are fastened.
  • three linear adapters 6, three T-shaped cable terminals 5, three connecting wires 4 and three copper bars 3 constitute a three-phase electrical path.
  • the insulating spacer 7 is fixedly disposed in the casing 1 and located in front of the T-shaped cable terminal 5 and the connecting wire 4.
  • the ring network cabinet incoming cable 8 is taken from the box 1
  • the cable is introduced into the box 1 through the door 14, and the A, B, and C three-phase lines of the ring network cabinet incoming cable 8 are respectively connected with the front terminals 31 of the three copper bars 3; three bypass cables are connected
  • the joints 9 are respectively fastened to the quick-connecting joints 63 of the straight-line adapters 6 through their quick joints 91, so that the three bypass cable joints 9 are electrically connected to the conductive rods 61 of the three linear adapters 6, respectively, thereby forming a joint.
  • A, B, C three-phase line from the ring network cabinet incoming cable 8, 3 copper bars 3, 3 connecting wires 4, 3 T-shaped cable terminals 5, 3 straight connectors 6 and 3 bypass cables
  • the power supply path formed by the connector 9 continues to supply power to the original power supply user of the ring network cabinet to be repaired, and the ring network cabinet can be repaired or repaired in case of power failure.
  • the quick-swap cable branch box of the present invention is designed with a common cable branch box as a blueprint, and the bypass cable linear adapter is fixed on the branch box, and the outer end and the bypass cable terminal head can be quickly plugged and connected.
  • the inner end is connected with the copper row in the branch box by the T-shaped cable terminal, the structure is simple, the cost is not high, the realization is convenient, and the use safety is high.
  • the quick-swapping cable branch box of the present invention in use, replaces the bypass cable by using the laid-in ring network cabinet incoming power cable, thereby greatly reducing the laying distance of the flexible bypass cable, and effectively solving the power supply.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Cable Accessories (AREA)
  • Patch Boards (AREA)

Abstract

一种快速插拔电缆分支箱，包括箱体（1）、绝缘子（2）、铜排（3）、连接导线（4）、T形电缆终端（5）、直线转接头（6）和绝缘隔板（7）；绝缘子、铜排、连接导线和T形电缆终端设置在箱体内；直线转接头包括导电杆（61）、绝缘层（62）、快速卡接头（63）和外壳（64）；3个直线转接头的一端在箱体内与T形电缆终端电连接；3个直线转接头、3个T形电缆终端、3根连接导线和3个铜排构成三相电通路；使用时，3个铜排与环网柜进线电缆的三相线对应相连接；3个直线转接头通过其快速卡接头与3根旁路电缆接头的快速接头卡接。快速插拔电缆分支箱结构简单，成本不高，实现方便；使用时可大幅减少柔性旁路电缆的敷设距离，有效解决了电源点和柔性旁路电缆远距离敷设的难题，提升抢修作业效率。

Description

快速插拔电缆分支箱 技术领域
本发明涉及供电线路旁路作业设备领域，具体涉及一种用于旁路作业检修环网柜的快速插拔电缆分支箱。
背景技术
在电缆线路旁路作业过程中，一般是利用旁路电缆及相关设备在现场快速搭接一条旁路供电线路，跨接待检修或抢修电缆线路段或设备，通过倒闸使旁路线路代替原线路向用户供电，同时，施工人员对处于停电状态下的原电缆线路待检修段或设备进行维护、检修和更换。在旁路作业检修环网柜时，旁路电缆系统搭建主要存在两个难点：一是要有电源点：一般是接到附近的环网柜备用间隔；二是旁路电缆敷设环境要好，不能频繁的跨越道路。这两个难点与城市中心区负荷密集的特点产生了矛盾，因为中心区环网柜少有备用间隔，在寻找电源点时需要另外在远处寻找有备用间隔的环网柜，延长旁路电缆线路敷设距离，加大施工工程量，延长作业时间，增加旁路作业设备数量，无形中增加了安全隐患点。
基于实际现场作业的需要，如果能够研制一种转接设备，通过将原有的环网柜进线电缆与旁路电缆连接，则可以使用原已铺好的电力电缆部分代替旁路电缆，解决电源点和远距离敷设的难题。国内配网中压10kV线路大多采用XLPE绝缘电力电缆，根据环网柜结构一般安装接线端子裸露的电缆户内终端或者接线端子封闭的T形电缆终端，户内电缆终端与环网柜连接方式为螺栓紧固式。旁路电缆作业设备采用的是柔性电力电缆，末端安装快速插拔式旁路电缆终端头。电缆分支箱是供电线路中常用的将电缆进行分接和转接的设备，但常规的电缆分支箱由于结构的限制，不能直接与旁路电缆连接。
发明内容
本发明的目的是：针对环网柜检修作业中的实际难题，提供一种用于快速连接环网柜进线电缆与旁路电缆的快速插拔电缆分支箱，以实现在现场各种复杂环境下，将环网柜进线电缆直接快速与旁路电缆设备电气连接，共同组成临时旁路电缆供电线路，从而在断电情况下对环网柜进行抢修或检修，同时不影响对用户供电。
本发明的技术方案是：本发明的快速插拔电缆分支箱，其结构特点是：包括箱体、绝缘子、铜排、连接导线、T形电缆终端、直线转接头和绝缘隔板；
上述的绝缘子、铜排、连接导线和T形电缆终端设置在箱体内；绝缘子、铜排、T形电缆终端和直线转接头分别各设有结构相同的3个；连接导线设有3根；
铜排具有一体连接的前接线端子和后接线端子；3个铜排在3个绝缘子上分别各固定设置1个；
上述的直线转接头包括导电杆、绝缘层、快速卡接头和外壳；
导电杆包括一体连接的前圆柱体和后圆柱体；且导电杆的前圆柱体的直径大于后圆柱体的直径；导电杆的前圆柱体内沿轴线设有从前向后凹入的螺牙孔，导电杆的螺牙孔内固定设有螺牙；导电杆的后圆柱体内沿轴线设有从后向前凹入的阶梯状的旁路电缆插接孔，旁路电缆插接孔内配套前置有弹性紧固圈；
绝缘层包覆在导电杆的外端面上；绝缘层由从前至后依次一体连接的中空的第一圆台部、第二圆台部、第一圆柱体部、第二圆柱体部和第三圆柱体部组成；第一圆台部的外径小于第二圆台部的外径；第一圆柱体部、第二圆柱体部和第三圆柱体部的外径依次减小；
快速卡接头套接在绝缘层的第二圆台部的后端且绝缘层的第三圆柱体部的后部穿过快速卡接头向后伸出；外壳固定安装在绝缘层的第二圆台部的外周面上且与快速卡接头的前端固定连接；
上述的直线转接头通过其外壳固定设置在箱体的下部后端面板上；直线转接头的快速卡接头位于箱体的下部后端面板的外部；3个直线转接头分别通过各自的导电杆内的螺牙与相应1个T形电缆终端螺栓固定连接；3个T形电缆终端的上端分别各通过1根连接导线与3个铜排的后接线端子对应电连接；
绝缘隔板固定设置在箱体内且位于T形电缆终端和连接导线的前方；
使用时，3个铜排的前接线端子与环网柜进线电缆的A、B、C三相线对应相连接；3个直线转接头通过其快速卡接头与3根旁路电缆接头的快速接头卡接。
进一步的方案是：上述的箱体整体呈长方体形，箱体内部中空；箱体的上部前面设有可开合的箱门，箱门配设有箱盖锁；箱体的下部两侧面上设有散热窗；箱体的下部前端面上设有可开合的电缆通过门；箱体的底部四角固定安装有4个带脚刹的滚轮。
进一步的方案是：上述的箱体的外部尺寸为680mm长×535mm宽×1150mm高。
进一步的方案是：上述的T形电缆终端为标配型螺栓紧固式T形电缆终端。
进一步的方案是：上述的直线转接头的快速卡接头为标配型快速卡接头，快速卡接头的前端具有安装固定环；外壳由上下对称的2部分组成；外壳安装后的外部形状 为方形；外壳的内部形状与绝缘层的第二圆台部的外部形状相配合；外壳的内部后端设有固定环套接槽；快速卡接头通过其安装固定环与外壳的固定环套接槽相配合与外壳固定连接。
进一步的方案还有：上述的直线转接头的绝缘层的材质为压缩应力为8-12kg/cm2的三元乙丙橡胶材料。
附图说明
图1为本发明的外部结构示意图；
图2为图1的后视图；
图3为图1的右视图；
图4为本发明的内部结构示意图，图中还示意性地显示了本发明在使用时与环网柜进线电缆以及旁路电缆的连接关系；
图5为图4中直线转接头的结构示意图；
图6为图5的轴向剖视图；
图7为图5所示的直线转接头的主要构件分体式状态结构示意图。
上述附图中的附图标记如下：
箱体1，箱门11，箱盖锁12，散热窗13，电缆通过门14，滚轮15，
绝缘子2，
铜排3，前接线端子31，后接线端子32，
连接导线4，
T形电缆终端5，
直线转接头6，导电杆61，螺牙61-1，旁路电缆插接孔61-2，弹性紧固圈61-3；绝缘层62，第一圆台部62-1，第二圆台部62-2，第一圆柱体部62-3，第二圆柱体部62-4，第三圆柱体部62-5，快速卡接头63，安装固定环63-1，外壳64，固定环套接槽64-1；
绝缘隔板7，
环网柜进线电缆8，
旁路电缆9，快速接头91。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
(实施例1)
见图1至图4，本实施例的快速插拔电缆分支箱，其主要由箱体1、绝缘子2、铜排3、连接导线4、T形电缆终端5、直线转接头6和绝缘隔板7组成。
箱体1整体呈长方体形，箱体1内部中空，本实施例中，箱体1的外部尺寸根据作业实践经验优选为680mm×535mm×1150mm(长×宽×高)，以适应环网柜检修时作业场地狭小、不规范，环网柜原线路电缆预留长度不够等作业实际环境。箱体1的上部前面设有可开合的箱门11，箱门11可利用箱盖锁12锁紧；箱体1的下部两侧面上设有散热窗13；箱体1的下部前端面上设有可开合的电缆通过门14；箱体1的底部四角固定安装有4个带脚刹的滚轮15，设置滚轮15的目的在于使得箱体1在作业时方便移动，便于检修作业。
绝缘子2设有3个，该3个绝缘子2固定设置在箱体1内的上部后侧。
铜排3设有结构相同的3个，该3个铜排3在3个绝缘子2上分别各固定设置1个；铜排3具有一体连接的前接线端子31和后接线端子32。
连接导线4设有3根。
T形电缆终端5固定设置在箱体1内的下部；T形电缆终端5为标配型螺栓紧固式T形电缆终端；T型电缆终端5设有结构相同的3个；该3个T形电缆终端5的上端分别各通过1根连接导线4与3个铜排3的后接线端子32一一对应电连接。
直线转接头6设有结构相同的3个，该3个直线转接头6固定设置在箱体1的下部后端面板上。
参见图5至图7，直线转接头6主要由导电杆61、绝缘层62、快速卡接头63和外壳64组成。
导电杆61由前圆柱体和后圆柱体一体组成，且导电杆61的前圆柱体的直径大于后圆柱体的直径；导电杆61的前圆柱体内沿轴线设有从前向后凹入的螺牙孔，导电杆61的螺牙孔内固定设有用于和T形电缆终端5固定连接的螺牙61-1；导电杆61的后圆柱体内沿轴线设有从后向前凹入的阶梯状的旁路电缆插接孔61-2，旁路电缆插接孔61-2内配套前置有2个分前后设置的弹性紧固圈61-3。
绝缘层62的材质本实施例中优选采用压缩应力为8-12kg/cm2的三元乙丙橡胶材料。绝缘层62包覆在导电杆61的外端面上。绝缘层62为一体件，绝缘层62由从前至后依次一体连接的中空的第一圆台部62-1、第二圆台部62-2、第一圆柱体部62-3、第二圆柱体部62-4和第三圆柱体部62-5组成；第一圆台部62-1的外径小于第二圆台部62-2的外径；第一圆柱体部62-3、第二圆柱体部62-4和第三圆柱体部62-5的外径依次减小。
快速卡接头63本实施例中采用标配的快速卡接头，快速卡接头63的前端具有安装固定环63-1。
外壳64为钢制件，外壳64由上下对称的2部分组成，外壳64安装后的外部形状为方形；外壳64的内部形状与绝缘层62的第二圆台部62-2的外部形状相配合；外壳64的内部后端设有固定环套接槽64-1；安装时，快速卡接头63套接在绝缘层62的第二圆台部62-2的后端且绝缘层62的第三圆柱体部62-5的后部穿过快速卡接头63向后伸出；快速卡接头63的安装固定环63-1置于外壳64的固定环套接槽64-1内；然后将外壳64的上下2部分固定连接，从而将快速卡接头63固定。
前述的直线转接头6固定设置在箱体1的下部后端面板上的方式为由直线转接头6的外壳64与箱体1的下部后端面板固定连接；快速卡接头63位于箱体1的下部后端面板的外部。
参见图2和图4，3个直线转接头6分别通过各自的导电杆61内的螺牙61-1与相应1个T形电缆终端5螺栓固定连接，螺母紧固。从而使得3个直线转接头6、3个T形电缆终端5、3根连接导线4和3个铜排3构成3相电通路。
绝缘隔板7固定设置在箱体1内且位于T形电缆终端5和连接导线4的前方。
本实施例的快速插拔电缆分支箱，其在使用时，通过滚轮15将箱体1方便地移动至待检修的环网柜旁合适位置后，将环网柜进线电缆8由箱体1的电缆通过门14引入箱体1内，将环网柜进线电缆8的A、B、C三相线分别与3个铜排3的前接线端子31对应相连接；将3根旁路电缆接头9通过其快速接头91分别各与1个直线转接头6的快速卡接头63卡接，使得3根旁路电缆接头9与3个直线转接头6的导电杆61分别电连接，从而构成一个由环网柜进线电缆8的A、B、C三相线、3个铜排3、3根连接导线4、3个T形电缆终端5、3个直线转接头6和3根旁路电缆接头9组成的供电通路继续为待检修的环网柜原供电用户供电，该环网柜即可在断电的情况下进行检修或抢修。
以上实施例是对本发明的具体实施方式的说明，而非对本发明的限制，有关技术领域的技术人员在不脱离本发明的精神和范围的情况下，还可以做出各种变换和变化而得到相对应的等同的技术方案，因此所有等同的技术方案均应该归入本发明的专利保护范围。
工业应用性
本发明具有积极的效果：
(1)本发明的快速插拔电缆分支箱，以普通电缆分支箱作为蓝本进行设计，将旁路电缆直线转接头固定在分支箱上，其外端与旁路电缆终端头可快速插接连接，内端用T形电缆终端与分支箱内的铜排连接，结构简单，成本不高，实现方便，使用安全性高。
(2)本发明的快速插拔电缆分支箱，其使用时，利用已铺设好的环网柜进线电力电缆代替旁路电缆，从而可大幅减少柔性旁路电缆的敷设距离，有效解决了电源点和柔性旁路电缆远距离敷设的难题。
(3)通过使用本发明的快速插拔电缆分支箱，可使得环网柜检修或抢修的施工工程量和作业时间大为缩短，施工安全隐患点大为减少。

Claims (6)

  1. 一种快速插拔电缆分支箱，其特征在于：包括箱体(1)、绝缘子(2)、铜排(3)、连接导线(4)、T形电缆终端(5)、直线转接头(6)和绝缘隔板(7)；
    所述的绝缘子(2)、铜排(3)、连接导线(4)和T形电缆终端(5)设置在箱体(1)内；绝缘子(2)、铜排(3)、T形电缆终端(5)和直线转接头(6)分别各设有结构相同的3个；连接导线(4)设有3根；
    铜排(3)具有一体连接的前接线端子(31)和后接线端子(32)；3个铜排(3)在3个绝缘子(2)上分别各固定设置1个；
    所述的直线转接头(6)包括导电杆(61)、绝缘层(62)、快速卡接头(63)和外壳(64)；
    导电杆(61)包括一体连接的前圆柱体和后圆柱体；且导电杆(61)的前圆柱体的直径大于后圆柱体的直径；导电杆(61)的前圆柱体内沿轴线设有从前向后凹入的螺牙孔，导电杆(61)的螺牙孔内固定设有螺牙(61-1)；导电杆(61)的后圆柱体内沿轴线设有从后向前凹入的阶梯状的旁路电缆插接孔(61-2)，旁路电缆插接孔(61-2)内配套前置有弹性紧固圈(61-3)；
    绝缘层(62)包覆在导电杆(61)的外端面上；绝缘层(62)由从前至后依次一体连接的中空的第一圆台部(62-1)、第二圆台部(62-2)、第一圆柱体部(62-3)、第二圆柱体部(62-4)和第三圆柱体部(62-5)组成；第一圆台部(62-1)的外径小于第二圆台部(62-2)的外径；第一圆柱体部(62-3)、第二圆柱体部(62-4)和第三圆柱体部(62-5)的外径依次减小；
    快速卡接头(63)套接在绝缘层(62)的第二圆台部(62-2)的后端且绝缘层(62)的第三圆柱体部(62-5)的后部穿过快速卡接头(63)向后伸出；外壳(64)固定安装在绝缘层(62)的第二圆台部(62-2)的外周面上且与快速卡接头(63)的前端固定连接；
    所述的直线转接头(6)通过其外壳(64)固定设置在箱体(1)的下部后端面板上；直线转接头(6)的快速卡接头(63)位于箱体(1)的下部后端面板的外部；3个直线转接头(6)分别通过各自的导电杆(61)内的螺牙(61-1)与相应1个T形电缆终端(5)螺栓固定连接；3个T形电缆终端(5)的上端分别各通过1根连接导线(4)与3个铜排(3)的后接线端子(32)对应电连接；
    绝缘隔板(7)固定设置在箱体(1)内且位于T形电缆终端(5)和连接导线(4)的前方；
    使用时，3个铜排(3)的前接线端子(31)与环网柜进线电缆(8)的A、B、C三相线对应相连接；3个直线转接头(6)通过其快速卡接头(63)与3根旁路电缆接头(9)的快速接头(91)卡接。
  2. 根据权利要求1所述的快速插拔电缆分支箱，其特征在于：所述的箱体(1)整体呈长方体形，箱体(1)内部中空；箱体(1)的上部前面设有可开合的箱门(11)，箱门(11)配设有箱盖锁(12)；箱体(1)的下部两侧面上设有散热窗(13)；箱体(1)的下部前端面上设有可开合的电缆通过门(14)；箱体(1)的底部四角固定安装有4个带脚刹的滚轮(15)。
  3. 根据权利要求2所述的快速插拔电缆分支箱，其特征在于：所述的箱体(1)的外部尺寸为680mm长×535mm宽×1150mm高。
  4. 根据权利要求1所述的快速插拔电缆分支箱，其特征在于：所述的T形电缆终端(5)为标配型螺栓紧固式T形电缆终端。
  5. 根据权利要求1所述的快速插拔电缆分支箱，其特征在于：所述的直线转接头(6)的快速卡接头(63)为标配型快速卡接头，快速卡接头(63)的前端具有安装固定环(63-1)；外壳(64)由上下对称的2部分组成；外壳(64)安装后的外部形状为方形；外壳(64)的内部形状与绝缘层(62)的第二圆台部(62-2)的外部形状相配合；外壳(64)的内部后端设有固定环套接槽(64-1)；快速卡接头(63)通过其安装固定环(63-1)与外壳(64)的固定环套接槽(64-1)相配合与外壳(64)固定连接。
  6. 根据权利要求1所述的快速插拔电缆分支箱，其特征在于：所述的直线转接头(6)的绝缘层(62)的材质为压缩应力为8-12kg/cm2的三元乙丙橡胶材料。
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CN203205820U (zh) * 2013-03-20 2013-09-18 深圳供电局有限公司 一种电缆转接箱
CN204349380U (zh) * 2014-03-18 2015-05-20 武汉里得科技有限公司 电缆分接箱
CN105071335A (zh) * 2015-08-13 2015-11-18 江苏省电力公司常州供电公司 快速插拔电缆分支箱
CN204835464U (zh) * 2015-08-13 2015-12-02 江苏省电力公司常州供电公司 一种快速插拔电缆分支箱

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