51 / 2021-10-13 20:09:40

Study on the influence of different section design of marine cable conductor on bending performance

cable conductor,section form,bending performance,theoretical formula

Marine umbilical cable or submarine cable is the main equipment for transmitting electric energy between offshore equipment, which plays a very important role in deep-sea oil and gas development. With the exploitation of offshore oil and gas gradually moving towards deep water, the power demand of equipment used in offshore oil and gas exploitation is increasing year by year, so the transmission capacity of cable conductors that transmit electric energy in marine umbilical cables or submarine cables is gradually increased. In order to improve the transmission capacity without increasing the diameter of cable winding, different types of cable conductor section forms began to appear. Most manufacturers began to use compact cables or profiled cables. However, there is few studies on the influence of the change of cable conductor cross section on its bending performance, so it is necessary to study the bending performance of marine cable conductors with different cross sections. In this paper, the theoretical research of circular copper wire cable, compact cable and profiled cable is carried out, and the bending test of cable conductors with different cross sections is carried out. The results show that the theoretical results can not accurately calculate the bending mechanical properties of marine cable conductors; When the conductor section of marine cable is special, the error between theoretical calculation results and experimental test results is large, which often cannot meet the needs of engineering calculation. Therefore, it is necessary to adopt different modified theoretical formulas for different types of cable conductors to ensure the accuracy of theoretical formula calculation. The research results have important reference value for the theoretical calculation formula of multi-layer spiral winding structure in the engineering application of marine umbilical cable or submarine cable.