Installation method of power cable splice box

Abstract

The invention provides an installation method of a splice box of a power cable, which is characterized by comprising the following steps of: knotting a first knot on the water entry end of the power cable, connecting the first knot with one end of a cable operation rope through a balanced steel wire, and connecting the power cable with a spare cable through a connector box; tightly binding the connector box and a hanger rod; knotting second knots on the front and the back of the connector box, and connecting the second knots through the steel wire; moving a ship, and synchronously releasing the cable operation rope; binding the spare cable and the cable operation rope together by a small rope every 1 meter after the connector box passes a stern; knotting a third knot on the position of the spare cable, which is 42 meters away from the first knot, and connecting the third knot with the cable operation rope; moving the cable operation rope out of a linear stepping cable machine, and placing the spare cable into the linear stepping cable machine; moving the ship, and synchronously releasing the cable till the connector box is released to a seabed. The invention can be suitable for any water depth and meet the requirement that a connector box installation process does not have additional requirements on an operation weather window, thereby being safe and effective.

Description

technical field [0001] The invention relates to a method for installing a power cable splice box, and belongs to the technical field of submarine power cable construction methods. Background technique [0002] After more than 100 years of development of the traditional communication cable junction box, the technological level has allowed the current junction box to be integrated with the cable, except that the size is slightly larger than the cable (dimensions, weight: length 230 cm, diameter 13.5 cm, air weight 35 kg, underwater weight 20 kg), other aspects such as strength, etc. have basically the same parameter characteristics as the cable. This greatly reduces the construction process requirements and is simple and easy to operate. The power hybrid cable has its special internal properties and characteristics, unique splicing process, and the prefabricated splicing box is huge in size (size, weight: 210 cm in length, 62 cm in diameter, 1,500 kg in air, and 1,100 kg in w...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the power composite cable repairs on the market adopt large-scale offshore operation platforms (such as large 3-purpose tugboats, large saturated diving support vessels DSV, large barges, etc.) that have been modified and installed with cable laying construction equipment. Requirements for the installation of the splice box in shallow water (within 100 meters of water depth), but for those in deep water (greater than 100 meters), it is quite difficult to operate and the reliability is not high

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