CN106655019A - Improved process for cold-shrink installation of 10-35KV cable intermediate joint - Google Patents
Improved process for cold-shrink installation of 10-35KV cable intermediate joint Download PDFInfo
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- CN106655019A CN106655019A CN201611044151.2A CN201611044151A CN106655019A CN 106655019 A CN106655019 A CN 106655019A CN 201611044151 A CN201611044151 A CN 201611044151A CN 106655019 A CN106655019 A CN 106655019A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000009434 installation Methods 0.000 title claims description 10
- 239000002390 adhesive tape Substances 0.000 claims abstract description 36
- 230000007704 transition Effects 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 42
- 229910052802 copper Inorganic materials 0.000 claims description 42
- 239000010949 copper Substances 0.000 claims description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 9
- 238000006748 scratching Methods 0.000 claims description 9
- 230000002393 scratching effect Effects 0.000 claims description 9
- 238000002788 crimping Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- -1 cold-shrinkable tube Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 9
- 238000004804 winding Methods 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
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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
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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
- H02G1/16—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for repairing insulation or armouring of cables
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Abstract
Description
技术领域technical field
本发明涉及电力技术领域，尤其是一种10-35KV电缆中间接头冷缩安装改进工艺。The invention relates to the technical field of electric power, in particular to an improved process for cold shrinking installation of intermediate joints of 10-35KV cables.
背景技术Background technique
众所周知，水分和湿气是对电缆附件绝缘危害最大的因素之一，一旦进入其内部必将导致绝缘水平下降甚至击穿，而电缆中间接头是整条电缆的薄弱点，所以电缆中间接头对防水的要求更高；目前中间接头安装工艺主要由热缩工艺和冷缩工艺，热缩工艺因需要采用火焰对热缩管进行烘烤，在烘烤过程中不能保证热缩管任何位置都进行同样的均匀受热收缩，这样中间接头会因为热缩管收缩不均匀，管内留有气泡或缝隙，造成防水性能差、绝缘性能差的缺陷；传统冷缩工艺采用冷缩管对电缆接头两端进行密封，利用冷缩管的弹性压紧力从而与电缆接头处的外半导电屏蔽层外表面紧贴密封，但是仅仅依靠弹性压紧力难以确保不存在缝隙，即使在冷缩管外还缠绕了防水胶带，但只要水分和湿气能够进入冷缩管外，即可能通过冷缩管与外半导电屏蔽层间的缝隙进入中间接头内部，而造成中间接头的绝缘水平下降甚至击穿。而且，由于10-35KV电缆的绝缘层厚度比较大，中间连接管与绝缘层之间会形成阶梯结构，该阶级结构会导致电场高度集中问题，给电缆的运行带来安全隐患。As we all know, moisture and humidity are one of the most harmful factors to the insulation of cable accessories. Once they enter the interior, the insulation level will drop or even break down. The cable intermediate joint is the weak point of the entire cable, so the cable intermediate joint is very important for waterproofing. The requirements are higher; the current intermediate joint installation process mainly consists of heat shrinking process and cold shrinking process. The heat shrinking process requires the use of flames to bake the heat shrinkable tube, and it cannot be guaranteed that any position of the heat shrinkable tube is the same during the baking process. The heat shrinks evenly, so that the intermediate joint will shrink unevenly due to the heat shrinkable tube, leaving air bubbles or gaps in the tube, resulting in poor waterproof performance and poor insulation performance; the traditional cold shrinkable process uses cold shrinkable tubes to seal both ends of the cable joint , using the elastic compression force of the cold shrink tube to tightly seal with the outer surface of the outer semi-conductive shielding layer at the cable joint, but it is difficult to ensure that there are no gaps only by relying on the elastic compression force, even if the cold shrink tube is wrapped with a waterproof Tape, but as long as moisture and moisture can enter the cold shrink tube, it may enter the intermediate joint through the gap between the cold shrink tube and the outer semi-conductive shielding layer, causing the insulation level of the intermediate joint to drop or even breakdown. Moreover, since the insulating layer of the 10-35KV cable is relatively thick, a stepped structure will be formed between the intermediate connecting pipe and the insulating layer. This hierarchical structure will lead to the problem of high concentration of the electric field and bring safety hazards to the operation of the cable.
发明内容Contents of the invention
针对上述现有技术中存在的问题，本发明提供一种10-35KV电缆中间接头冷缩安装改进工艺，目的是为了提高电缆中间接头的密封性能和绝缘性能，有效解决中间连接管与绝缘层之间的电场集中问题，而且可以承受较高的机械强度。Aiming at the problems existing in the above-mentioned prior art, the present invention provides a 10-35KV cable intermediate joint cold-shrink installation improvement process, the purpose is to improve the sealing performance and insulation performance of the cable intermediate joint, and effectively solve the gap between the intermediate connecting pipe and the insulating layer. The problem of electric field concentration between them, and can withstand high mechanical strength.
本发明通过下述技术方案来实现：The present invention is achieved through the following technical solutions:
一种10-35KV电缆中间接头冷缩安装改进工艺，所用材料包括：防水自粘胶带，冷缩管，中间接管，恒力弹簧，接地线，铠装带，防水胶带，PVC胶带，绝缘胶带，硅脂膏；具体工艺步骤如下：A 10-35KV cable intermediate joint cold shrink installation improvement process, the materials used include: waterproof self-adhesive tape, cold shrink tube, intermediate pipe, constant force spring, ground wire, armored tape, waterproof tape, PVC tape, insulating tape , silicone grease; the specific process steps are as follows:
步骤1：剥离外护套：长电缆端剥去700mm-800mm，短电缆端剥去500-600mm；Step 1: Strip the outer sheath: strip 700mm-800mm at the end of the long cable, and 500-600mm at the end of the short cable;
步骤2：剥离钢铠：距外护套断口20-30mm处，用恒力弹簧将钢铠扎住，然后顺钢铠包紧方向锯一环，撬起钢铠的断边，拉下并转松钢铠，脱出钢铠，并处理好锯断处的毛刺；Step 2: Peel off the steel armor: 20-30mm away from the fracture of the outer sheath, tie the steel armor with a constant force spring, then saw a ring along the tight direction of the steel armor, pry up the broken edge of the steel armor, pull it down and turn it Loosen the steel armor, take off the steel armor, and deal with the burrs at the saw-off place;
步骤3：剥离内护套：距钢铠断口90-100mm处，剥内护套，操作时防止划伤铜屏蔽层；Step 3: Peel off the inner sheath: 90-100mm away from the steel armor fracture, peel off the inner sheath to prevent scratching the copper shielding layer during operation;
步骤4：剥开包带子及填充物，将各相电缆分岔进行操作；Step 4: Peel off the tape and filler, and branch the cables of each phase for operation;
步骤5：剥离铜带屏蔽层：距电缆断口200mm±5mm处，用绝缘胶带扎紧并标记位置，剥离铜带屏蔽层，操作时防止划伤外半导电层；Step 5: Peel off the copper tape shielding layer: 200mm±5mm from the cable fracture, tie it tightly with insulating tape and mark the position, peel off the copper tape shielding layer, and prevent scratching the outer semi-conductive layer during operation;
步骤6：剥离外半导电屏蔽层:距铜带屏蔽层断口40-50mm处，剥离外半导电屏蔽层，操作时防止划伤绝缘层；Step 6: Peel off the outer semiconductive shielding layer: 40-50 mm away from the fracture of the copper tape shielding layer, peel off the outer semiconductive shielding layer to prevent scratching the insulating layer during operation;
步骤7：剥离绝缘层及内半导电屏蔽层：剥离长度略大于中间接管全长的一半，以使连接管压接后与绝缘层有一定的过渡空隙，操作时防止划伤铜导体；Step 7: Peel off the insulating layer and the inner semi-conductive shielding layer: the peeling length is slightly greater than half of the total length of the intermediate connecting pipe, so that there is a certain transition gap between the connecting pipe and the insulating layer after crimping, and the copper conductor is prevented from being scratched during operation;
步骤8：打磨清洁：在绝缘层切口上切削45°乘以2mm的倒角，打磨绝缘层的切口，打磨后，坡面应平整光洁，清洁干净铜导体、绝缘层及外半导电屏蔽层，去除嵌入在绝缘层表面的半导电颗粒，外半导电层断口应平齐，以改善中间接头中的电场分布，解决外半导电层断口处电场高度集中的问题；Step 8: Grinding and cleaning: Cut a chamfer of 45° times 2mm on the incision of the insulation layer, and polish the incision of the insulation layer. After grinding, the slope surface should be smooth and clean, and the copper conductor, insulation layer and outer semi-conductive shielding layer should be cleaned. Remove the semiconducting particles embedded on the surface of the insulating layer, and the fracture of the outer semiconducting layer should be even, so as to improve the electric field distribution in the intermediate joint and solve the problem of high concentration of the electric field at the fracture of the outer semiconducting layer;
步骤9：绕包第一层防水自粘胶带：在外半导电屏蔽层外绕包第一层防水自黏胶带；Step 9: Wrap the first layer of waterproof self-adhesive tape: Wrap the first layer of waterproof self-adhesive tape outside the outer semi-conductive shielding layer;
步骤10：套装冷缩管和铜屏蔽网套：将冷缩管套装在长电缆端，将铜屏蔽网套装在短电缆端。Step 10: Put the cold shrink tube and the copper shielding net sleeve: put the cold shrink tube on the long cable end, and put the copper shield net on the short cable end.
步骤11：压接中间接管：将中间接管套在电缆铜导体的外面并压接以将两个电缆连接起来，压接后将中间接管表面的毛刺处理干净；Step 11: Crimp the intermediate connecting tube: Put the intermediate connecting tube on the outside of the copper conductor of the cable and crimp it to connect the two cables. After crimping, clean the burrs on the surface of the intermediate connecting tube;
步骤12：在中间接管与绝缘层之间的过渡空隙上缠绕半导电胶带，并在连接管的表面缠上合适厚度的半导电带，使中间接管与绝缘层圆滑过渡；Step 12: Wrap semi-conductive tape on the transition gap between the intermediate connecting pipe and the insulating layer, and wrap a semi-conductive tape of appropriate thickness on the surface of the connecting pipe to make the transition between the intermediate connecting pipe and the insulating layer smooth;
步骤13：擦干净铜导体及绝缘层，均匀涂抹硅脂膏；Step 13: Wipe off the copper conductor and insulating layer, and apply silicone grease evenly;
步骤14：定位安装冷缩管：将冷缩管端头搭接在电缆外半导电屏蔽层外表面的第一层防水自粘胶带上，抽拉冷缩管内的塑料支撑条，使冷缩管包覆住电缆接口，且冷缩管的两端口分别粘合在长电缆端、短电缆端的第一层防水自粘胶带上；Step 14: Position and install the cold shrink tube: Lap the end of the cold shrink tube on the first layer of waterproof self-adhesive tape on the outer surface of the semi-conductive shielding layer of the cable, and pull the plastic support strip inside the cold shrink tube to make the cold shrink tube The tube covers the cable interface, and the two ports of the cold shrink tube are glued to the first layer of waterproof self-adhesive tape on the long cable end and the short cable end respectively;
步骤15：绕包第二层防水自粘胶带：在冷缩管的两端口分别半搭盖绕包第二层防水自黏胶带，第二层防水自黏胶带的一半与冷缩管搭接，另一半与第一层防水自黏胶带搭接；Step 15: Wrap the second layer of waterproof self-adhesive tape: Wrap the second layer of waterproof self-adhesive tape on the two ends of the cold shrink tube, and half of the second layer of waterproof self-adhesive tape overlaps with the cold shrink tube , the other half is lapped with the first layer of waterproof self-adhesive tape;
步骤16：安装铜屏蔽网套及内接地线：拉出之前装在短电缆端的铜屏蔽网套覆盖电缆接头，用恒力弹簧将铜屏蔽网套和接地线的两端固定在铜带屏蔽层上，用绝缘胶带包紧恒力弹簧；Step 16: Install the copper shielding net sleeve and the inner grounding wire: pull out the copper shielding net sleeve installed at the short cable end to cover the cable joint, and fix the copper shielding net sleeve and the two ends of the grounding wire to the copper tape shielding layer with a constant force spring On, wrap the constant force spring tightly with insulating tape;
步骤17：回填填充物：将剥开的包带子及填充物回填，用PVC胶带包紧，并用防水胶带搭盖缠绕整个电缆接头；Step 17: Backfill the filler: backfill the stripped tape and filler, wrap it tightly with PVC tape, and wrap the entire cable joint with waterproof tape;
步骤18：安装外接地线：用恒力弹簧将外接地线的一端固定在一端电缆的钢带铠装上，然后用外接地线缠绕电缆并使用恒力弹簧将其固定在另一端电缆的钢带铠装上，用PVC胶带包紧，并用防水胶带搭盖缠绕整个电缆接头；Step 18: Install the outer ground wire: Fix one end of the outer ground wire to the steel tape armor of the cable at one end with a constant force spring, then wrap the outer ground wire around the cable and fix it to the steel tape armor of the other end cable with a constant force spring Armored, wrapped tightly with PVC tape, and covered with waterproof tape to wrap the entire cable joint;
步骤19：安装铠装带：打开铠装带包装后，迅速将其半重叠搭接缠绕整个电缆接头；Step 19: Install the armored tape: After unpacking the armored tape, quickly wrap it half-overlapped and lapped around the entire cable joint;
步骤20：安装完成，静置30分钟以上方可移动电缆。Step 20: After the installation is complete, let the cable stand for more than 30 minutes before moving the cable.
本发明一种10-35KV电缆中间接头冷缩安装改进工艺的有益效果是：通过采用两层防水自粘胶带分别绕包在外半导电屏蔽层外表面和冷缩管断口外表面，且两层防水自粘胶带粘合在一起，从而既利用了冷缩管良好的自然收缩特性，又能通过防水自粘胶带之间的粘合而彻底封闭冷缩管与电缆之间可能存在的缝隙，大大提高了该工艺制作的电缆中间接头的防水性能；同时通过预留连接管与绝缘层之间的过渡空隙，并在该过渡空隙及中间接管上缠绕半导电胶带，能够解决绝缘层与中间接管连接处电场高度集中的问题。The beneficial effect of the improvement process of the cold-shrink installation of the middle joint of a 10-35KV cable in the present invention is that two layers of waterproof self-adhesive tape are respectively wrapped on the outer surface of the outer semi-conductive shielding layer and the outer surface of the fracture of the cold-shrink tube, and the two layers The waterproof self-adhesive tapes are bonded together, so that the good natural shrinkage characteristics of the cold shrink tube can be used, and the gap that may exist between the cold shrink tube and the cable can be completely closed by the bonding between the waterproof self-adhesive tapes , which greatly improves the waterproof performance of the cable intermediate joint made by this process; at the same time, by reserving a transition gap between the connecting pipe and the insulating layer, and wrapping a semi-conductive tape on the transition gap and the intermediate connecting tube, the insulation layer and the intermediate connector can be solved. Take over the problem of high concentration of electric field at the junction.
具体实施方式detailed description
本发明是一种25-40mm直径电缆中间接头冷缩安装的改进工艺，所用材料包括：防水自粘胶带，冷缩管，中间接管，恒力弹簧，接地线，铠装带，防水胶带，PVC胶带，绝缘胶带，硅脂膏，以增加中间接头的防水密闭性能、绝缘性能、机械性能，提高电缆的安全性和稳定性。The present invention is an improved process for cold-shrinking installation of the middle joint of a 25-40mm diameter cable. The materials used include: waterproof self-adhesive tape, cold-shrinkable tube, intermediate connecting pipe, constant force spring, grounding wire, armored tape, waterproof tape, PVC tape, insulating tape, and silicone grease to increase the waterproof and airtight performance, insulation performance, and mechanical performance of the intermediate joint, and improve the safety and stability of the cable.
具体工艺步骤如下：The specific process steps are as follows:
步骤1：剥离外护套：长电缆端剥去800mm，短电缆端剥去600mm；Step 1: Strip the outer sheath: strip 800mm from the long cable end and 600mm from the short cable end;
步骤2：剥离钢铠：距外护套断口30mm处，用恒力弹簧将钢铠扎住，然后顺钢铠包紧方向锯一环，撬起钢铠的断边，撬开后用钳子拉下并转松钢铠，脱出钢铠，并处理好锯断处的毛刺；Step 2: Peel off the steel armor: 30mm away from the fracture of the outer sheath, tie the steel armor with a constant force spring, then saw a ring along the tight direction of the steel armor, pry up the broken edge of the steel armor, and pull it with pliers Lower and loosen the steel armor, take off the steel armor, and deal with the burr at the sawed part;
步骤3：剥离内护套：距钢铠断口100mm处，切除内护套，内护套的切痕应小于内护套的厚度，以防止划伤铜屏蔽层；Step 3: Peel off the inner sheath: cut off the inner sheath at a distance of 100mm from the fracture of the steel armor. The cut marks on the inner sheath should be smaller than the thickness of the inner sheath to prevent scratching the copper shielding layer;
步骤4：剥开包带子及填充物，将各相电缆分岔进行操作；Step 4: Peel off the tape and filler, and branch the cables of each phase for operation;
步骤5：剥离铜带屏蔽层：距电缆断口205mm处，用绝缘胶带扎紧并标记位置，剥离铜带屏蔽层，切割时，先环切一刀痕，不能切透，防止划伤外半导电层，剥除时，应以刀痕处撕剥，断开口向线芯端部剥除；Step 5: Peel off the shielding layer of the copper tape: 205mm away from the cable fracture, tie it tightly with insulating tape and mark the position, peel off the shielding layer of the copper tape, and cut a knife mark around it when cutting, so as not to cut through it, so as to prevent scratching the outer semi-conductive layer , when stripping, it should be stripped at the knife mark, and the opening should be stripped towards the end of the core;
步骤6：剥离外半导电屏蔽层:距铜带屏蔽层断口50mm处，剥离外半导电屏蔽层，操作时防止划伤绝缘层；Step 6: Peel off the outer semiconductive shielding layer: 50mm away from the fracture of the copper tape shielding layer, peel off the outer semiconductive shielding layer to prevent scratching the insulating layer during operation;
步骤7：剥离绝缘层及内半导电屏蔽层：剥离长度略大于中间接管全长的一半，以使连接管压接后与绝缘层有一定的过渡空隙，操作时防止划伤铜导体；Step 7: Peel off the insulating layer and the inner semi-conductive shielding layer: the peeling length is slightly greater than half of the total length of the intermediate connecting pipe, so that there is a certain transition gap between the connecting pipe and the insulating layer after crimping, and the copper conductor is prevented from being scratched during operation;
步骤8：打磨清洁：在绝缘层切口上切削45°乘以2mm的倒角，打磨绝缘层的切口，打磨后，坡面应平整光洁，清洁干净铜导体、绝缘层及外半导电屏蔽层，去除嵌入在绝缘层表面的半导电颗粒，外半导电层断口应平齐，以改善中间接头中的电场分布，解决外半导电层断口处电场高度集中的问题；Step 8: Grinding and cleaning: Cut a chamfer of 45° times 2mm on the incision of the insulation layer, and polish the incision of the insulation layer. After grinding, the slope surface should be smooth and clean, and the copper conductor, insulation layer and outer semi-conductive shielding layer should be cleaned. Remove the semiconducting particles embedded on the surface of the insulating layer, and the fracture of the outer semiconducting layer should be even, so as to improve the electric field distribution in the intermediate joint and solve the problem of high concentration of the electric field at the fracture of the outer semiconducting layer;
步骤9：绕包第一层防水自粘胶带：在外半导电屏蔽层外绕包第一层防水自黏胶带；Step 9: Wrap the first layer of waterproof self-adhesive tape: Wrap the first layer of waterproof self-adhesive tape outside the outer semi-conductive shielding layer;
步骤10：套装冷缩管和铜屏蔽网套：将冷缩管套装在长电缆端，将铜屏蔽网套装在短电缆端。Step 10: Put the cold shrink tube and the copper shielding net sleeve: put the cold shrink tube on the long cable end, and put the copper shield net on the short cable end.
步骤11：压接中间接管：将中间接管套在电缆铜导体的外面并压接以将两个电缆连接起来，压接后将中间接管表面的毛刺处理干净；Step 11: Crimp the intermediate connecting tube: Put the intermediate connecting tube on the outside of the copper conductor of the cable and crimp it to connect the two cables. After crimping, clean the burrs on the surface of the intermediate connecting tube;
步骤12：在中间接管与绝缘层之间的过渡空隙上缠绕半导电胶带，并在连接管的表面缠上合适厚度的半导电带，使中间接管与绝缘层圆滑过渡，由于电缆的绝缘层厚度比较大，通过预留连接管与绝缘层之间的过渡空隙，并在该过渡空隙及中间接管上缠绕半导电胶带，能够解决绝缘层与中间接管连接处电场高度集中的问题；Step 12: Wrap semi-conductive tape on the transition gap between the intermediate connecting pipe and the insulating layer, and wrap a semi-conductive tape of appropriate thickness on the surface of the connecting pipe to make the transition between the intermediate connecting pipe and the insulating layer smooth. Due to the thickness of the insulating layer of the cable Relatively large, by reserving a transition gap between the connecting pipe and the insulating layer, and winding a semi-conductive tape on the transition gap and the intermediate connecting pipe, the problem of high concentration of the electric field at the connection between the insulating layer and the intermediate connecting pipe can be solved;
步骤13：擦干净铜导体及绝缘层，均匀涂抹硅脂膏；Step 13: Wipe off the copper conductor and insulating layer, and apply silicone grease evenly;
步骤14：定位安装冷缩管：将冷缩管端头搭接在电缆外半导电屏蔽层外表面的第一层防水自粘胶带上，搭接的距离优选20mm，抽拉冷缩管内的塑料支撑条，使冷缩管包覆住电缆接口，且冷缩管的两端口分别粘合在长电缆端、短电缆端的第一层防水自粘胶带上；Step 14: Position and install the cold shrink tube: lap the end of the cold shrink tube on the first layer of waterproof self-adhesive tape on the outer surface of the semi-conductive shielding layer of the cable. Plastic support strips, so that the cold-shrinkable tube covers the cable interface, and the two ports of the cold-shrinkable tube are respectively glued to the first layer of waterproof self-adhesive tape at the long cable end and the short cable end;
步骤15：绕包第二层防水自粘胶带：在冷缩管的两端口分别半搭盖绕包第二层防水自黏胶带，第二层防水自黏胶带的一半与冷缩管搭接，另一半与第一层防水自黏胶带搭接；通过采用两层防水自粘胶带分别绕包在外半导电屏蔽层外表面和冷缩管断口外表面，且两层防水自粘胶带粘合在一起，从而既利用了冷缩管良好的自然收缩特性，又能通过防水自粘胶带之间的粘合而彻底封闭冷缩管与电缆之间可能存在的缝隙，大大提高了该工艺制作的电缆中间接头的防水性能；Step 15: Wrap the second layer of waterproof self-adhesive tape: Wrap the second layer of waterproof self-adhesive tape on the two ends of the cold shrink tube, and half of the second layer of waterproof self-adhesive tape overlaps with the cold shrink tube , the other half is lapped with the first layer of waterproof self-adhesive tape; two layers of waterproof self-adhesive tape are used to wrap the outer surface of the outer semi-conductive shielding layer and the outer surface of the cold shrink tube fracture respectively, and the two layers of waterproof self-adhesive tape are glued Together, it not only takes advantage of the good natural shrinkage characteristics of the cold shrinkable tube, but also completely closes the gap that may exist between the cold shrinkable tube and the cable through the bonding between the waterproof self-adhesive tapes, which greatly improves the process. The waterproof performance of the made cable intermediate joint;
步骤16：安装铜屏蔽网套及内接地线：拉出之前装在短电缆端的铜屏蔽网套覆盖电缆接头，用恒力弹簧将铜屏蔽网套和接地线的两端固定在铜带屏蔽层上，用绝缘胶带包紧恒力弹簧；Step 16: Install the copper shielding net sleeve and the inner grounding wire: pull out the copper shielding net sleeve installed at the short cable end to cover the cable joint, and fix the copper shielding net sleeve and the two ends of the grounding wire to the copper tape shielding layer with a constant force spring On, wrap the constant force spring tightly with insulating tape;
步骤17：回填填充物：将剥开的包带子及填充物回填，用PVC胶带包紧，并用防水胶带搭盖缠绕整个电缆接头，以提高中间接头的绝缘性能和防水性能；Step 17: Backfill the filler: backfill the stripped tape and filler, wrap it tightly with PVC tape, and wrap the entire cable joint with waterproof tape to improve the insulation and waterproof performance of the intermediate joint;
步骤18：安装外接地线：用恒力弹簧将外接地线的一端固定在一端电缆的钢带铠装上，然后用外接地线缠绕电缆并使用恒力弹簧将其固定在另一端电缆的钢带铠装上，用PVC胶带包紧，并用防水胶带搭盖缠绕整个电缆接头；Step 18: Install the outer ground wire: Fix one end of the outer ground wire to the steel tape armor of the cable at one end with a constant force spring, then wrap the outer ground wire around the cable and fix it to the steel tape armor of the other end cable with a constant force spring Armored, wrapped tightly with PVC tape, and covered with waterproof tape to wrap the entire cable joint;
步骤19：安装铠装带：打开铠装带包装后，迅速将其半重叠搭接缠绕整个电缆接头，以提高中间接头的机械性能；Step 19: Install the armored tape: After unpacking the armored tape, quickly wrap it half-overlapping and overlapping the entire cable joint to improve the mechanical properties of the intermediate joint;
步骤20：安装完成，静置30分钟以上方可移动电缆。Step 20: After the installation is complete, let the cable stand for more than 30 minutes before moving the cable.
综上所述，本发明的内容并不局限在上述实施例中，本领域的技术人员可以在本发明的技术指导思想之内提出其他的实施例，但这些实施例都包括在本发明的范围之内。In summary, the content of the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can propose other embodiments within the technical guidance of the present invention, but these embodiments are all included in the scope of the present invention within.
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