Submarine cable center positioning and protection device

Abstract

The invention discloses a submarine cable center positioning and protection device, and the device comprises a guide cone, a conical ring, a positioning shaft, and a connecting shaft. The guide cone consists of two symmetric parts, and the head part of the guide cone is in a conical structure. The conical ring consists of two symmetric parts, wherein an outer side surface of the conical ring is in a conical structure, and an end face of the conical ring is provided with an annular through hole. The positioning shaft consists of two parts, wherein an external surface is provided with a reinforcing rib, and two side edges are provided with side plates. The side plates are provided with bolts holes, and the symmetric parts of the positioning shaft are connected through the bolt holes and bolts. Moreover, the guide cone, the conical ring and the positioning ring are connected through bolts. The connecting shaft consists of two symmetric parts, wherein the head part of the connecting shaft is provided with a connecting flange, and two side edges of the connecting shaft are connected with the side plates. According to the invention, the device can enable a cable at a lower port of a protection tube to be limited at the center of the protection tube, can effectively control the swinging of a submarine cable in the protection tube, prevents the submarine cable to collide with the rigid protection tube, and avoids the fatigue damage of the submarine cable under the long-term action of ocean current. Meanwhile, the device is simple in structure, is convenient to install, is high in reliability, and is long in service life.

Description

technical field [0001] The invention relates to a submarine cable center positioning protection device, which is particularly suitable for center positioning protection of oil platforms and offshore wind power submarine cables in protection pipes. Background technique [0002] With the increasing demand for energy in my country, the development of offshore oil and gas and offshore wind power is also rapidly increasing. As an important medium for power transmission, submarine cables are of utmost importance to their safety and reliability during use. The oil platform or offshore wind power submarine cable is passed from the bottom of the sea to the top of the platform through a rigid protective tube. In order to pass through the tube smoothly, the inner diameter of the submarine cable protective tube is generally about 3 times the outer diameter of the submarine cable. Therefore, the submarine cable will swing freely in the protective tube, especially at the outlet of the lo...

AI Technical Summary

Problems solved by technology

Therefore, the submarine cable will swing freely in the protective tube, especially at the outlet of the lower end of the protective tube, where the submarine cable is most severely affected by the ocean current. Fatigue and breakage of the cable causes the cable to be unable to transmit power, and eventually leads to the paralysis of the entire power system, resulting in huge economic losses

At present, the commonly used protection method is to use heavy objects to press the submarine cable out of the protective tube to prevent the movement of the submarine cable. This method can effectively control the movement of the submarine cable in a short period of time, but under the action of long-term ocean currents, the heavy objects will be washed away. The submarine cable can swing freely

Images