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Large-section, high drop high-voltage cable line high point jointless continuous laying method

A high-voltage cable and high-drop technology, which is applied in the direction of cable laying equipment, cable installation, and cable installation devices, can solve problems such as high construction costs, hidden dangers in operation, and difficult operation and maintenance, and achieve the elimination of hidden safety hazards, shortening the construction period, and Effect of improving power supply reliability

Active Publication Date: 2019-01-15
JIANGSU ELECTRIC POWER CO
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the technical problems of high construction cost, long construction period, difficult operation and maintenance, and easy operation hidden dangers existing in the laying method of large-section, high-drop high-voltage cable lines in the prior art

Method used

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  • Large-section, high drop high-voltage cable line high point jointless continuous laying method
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  • Large-section, high drop high-voltage cable line high point jointless continuous laying method

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Embodiment Construction

[0045] The following is a further description of the high-voltage, large-section, and high-drop cable line high-point non-joint laying method of the present invention in conjunction with the accompanying drawings.

[0046] See attached figure 2 , the non-joint continuous laying method includes the following steps:

[0047] Step (1), determine the direction of continuous laying of large-section, high-drop high-voltage cable lines, because figure 2 The cable laying channel shown in is a complicated and high-drop cable channel including culverts, non-excavation pipe sections, narrow working wells, cable bridges, and cable caissons. The overall height of the side channel is higher than that on the right side, that is, the drop on the left side is small, and the drop on the right side is large. According to this construction method, the direction of continuous laying of high-voltage cable lines is determined to be from left to right, that is, along the "ji"-shaped drop The smal...

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Abstract

A Large-section, high drop high-voltage cable line high point jointless continuous laying method is provided. A cable tray is arranged on the side with small drop difference of ji shape, a multi-functional guide sliding frame and a first conveyor are arranged on the pay-off side of the cable tray, a tractor is arranged on the side with large drop difference of ji shape, and low-friction pulleys and a plurality of conveyors are arranged on the cable culvert trench, the digging-free tubing, the narrow well, the cable bridge, the caisson with high drop difference, and the tunnel; The laying direction of the cable is from culvert - tubing - working well - slope culvert - bridge - slope culvert - caisson - tunnel. As that cable culvert, The safe and economical laying of high-voltage cable lines without joints at high drop points is realized through the development and application of non-excavated tubes, narrow shafts, cable bridges, high drop caisson, ji shaped high drop model composed oftunnels, non-excavated tubes, high drop caisson traction engineering model calculation and low friction pulley to reduce traction force.

Description

technical field [0001] The invention belongs to the field of cable laying, and in particular relates to a laying method of high-point high-point jointless high-voltage cable lines with large cross-section and high drop. Background technique [0002] In recent years, the cable application of urban power transmission and distribution lines in my country has become a significant development trend. Jiangsu Province has put into operation a total length of more than 100,000 kilometers, ranking first in the country. Among them, the length of 110 and 220kV cable lines has reached 3,809 kilometers. It has become one of the main transmission forms of urban power supply. On the other hand, the scale of three-dimensional traffic construction such as high-speed inner ring elevated highways, intercity high-speed rail, and urban light rail in cities across the country, including Wuxi, is showing a rapid growth trend. Drop high-voltage cable line projects began to emerge continuously. This...

Claims

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Application Information

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IPC IPC(8): H02G1/08
CPCH02G1/088
Inventor 何光华郑云浦仕亮张志坚吴寅雄徐凯庄裕孙柯
Owner JIANGSU ELECTRIC POWER CO
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