A prefabricated power cable intermediate joint installation device and method
A technology for intermediate joints and power cables, which is applied in the direction of cable joints, equipment for connecting/terminating cables, etc. It can solve problems such as impact on the life of accessories, strains and scratches on the inner holes of rubber parts, and achieve simple and portable equipment and labor-saving installation. Time-saving and convenient installation
Active Publication Date: 2017-09-01
江苏安靠智能输电工程科技股份有限公司
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Problems solved by technology
[0006] 1. The pre-expansion method, due to poor lubrication, will strain the inner hole of the rubber parts and form scratches, seriously affecting product quality and long-term operation
[0007] 2. On-site expansion is difficult, and the equipment is complex and heavy
[0008] 3. During pre-expansion, the interface cleanliness cannot meet the requirements due to poor site environment
[0009] 4. Use a puller to forcibly pull in, the installation is time-consuming and labor-intensive, and has a serious impact on the life of the accessories
Method used
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[0028] In order to make the technical problems, technical solutions and advantages solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings.
[0029] Such as figure 1 As shown, a prefabricated power cable intermediate joint installation device includes: an inflatable expansion tube 3, an inflatable device 5, and six pull-out belts 6 arranged inside the inflatable expansion tube 3; one end of the inflatable expansion tube 3 is provided with an inflation interface 4. The tube wall of the inflatable expansion tube 3 is a hollow structure, and the inner and outer surfaces are coated with a double-layer fiber fabric. Inflatable expansion tube 3 other ends are connected with an end of pull-out band 6, and pull-out band 6 is six, is evenly distributed in described inflation tube 3 inner side, draws from expansion tube inboard. The inflation device 5 is connected with the inflation expansion tube 3 through the infl...
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The invention discloses a prefabricated power cable intermediate joint installation device, comprising: an inflatable expansion tube, a quick air source and a pull-out belt, the upper end of the expansion tube is provided with an inflatable interface connected with the quick air source, and the inner side is provided with a pull-out belt . Also disclosed is a prefabricated power cable intermediate joint installation method: apply lubricant to the surface of the inflatable expansion tube, apply lubricant to the inner hole of the intermediate joint, install the expansion tube into the inner hole of the intermediate joint; inflate the intermediate joint with the inflatable expansion tube Pre-expand, and then put it on a cable; connect the inflatable expansion tube and the quick air source, and inflate the inflatable expansion tube; adjust the inflation pressure, and the expansion tube will be inflated, so that the middle joint will be deformed and the inner hole will be fully inserted into the cable Connect the two cables, move and position the expansion tube and the intermediate joint; pull out the expansion tube from the pull-out belt on the inside to complete the set. The invention solves the problem that the installation quality of the joint is affected by the large frictional force, and the equipment is simple and light, and the installation is convenient.
Description
technical field [0001] The invention relates to a cable connection device in the electric power industry, in particular to a prefabricated power cable intermediate joint installation device and method. Background technique [0002] In power lines, the proportion of cables is gradually increasing. It is widely used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater power transmission across rivers and seas. As the bottleneck part of power cable line technology, cable accessories are affected by the manufacturing and installation process, and the failure rate accounts for more than 90% of the cable line. [0003] Prefabricated cable accessories are injected into different components with silicone rubber or EPDM rubber, vulcanized at one time, only the contact interface is reserved, and the accessories are made by inserting cables during on-site construction. This construction technolo...
Claims
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IPC IPC(8): H02G1/14H02G15/08
Inventor 陈晓鸣
Owner 江苏安靠智能输电工程科技股份有限公司