Prefabricated power cable intermediate joint mounting device and method
A technology for intermediate joints and power cables, applied in cable joints, equipment for connecting/terminating cables, etc., can solve problems such as poor site environment, influence of accessory life, time-consuming and laborious installation, etc., to achieve convenient installation, simple and lightweight equipment, and installation. Effort and time saving effect
Active Publication Date: 2014-12-10
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
[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 mounting device. The prefabricated power cable intermediate joint mounting device comprises an air-inflation expansion tube, a quick air source and pull-out bands, the tail end of the upper portion of the expansion tube is provided with an air-inflation port connected with the quick air source, and the pull-out bands are arranged on the inner side of the expansion tube. The invention further discloses a prefabricated power cable intermediate joint mounting method. The prefabricated power cable intermediate joint mounting method includes steps of applying lubricant on the surface of the air-inflation expansion tube and an inner hole of an intermediate joint, and mounting the expansion tube into the inner hole of the intermediate joint; inflating the intermediate joint to pre-expand by the air-inflation expansion tube, and sleeving the intermediate joint on cables; connecting the air-inflation expansion tube with the quick air source, and inflating the air-inflation expansion tube; adjusting inflation pressure and inflating and expanding the expansion tube, so that the intermediate joint deforms to expand the inner hole and is completely sleeved with the cables; connecting the cables and moving and positioning the expansion tube and the intermediate joint; pulling out the expansion tube from the inner side by the pull-out bands and completing sleeving. The prefabricated power cable intermediate joint mounting device and method solves the problem of influences on joint mounting quality due to high friction force, and the mounting device is simple and portable and convenient to mount.
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