Deepwater submarine pipeline connection method is mostly mechanical connection method, can be divided into 3 types: the claw type connecting, clamp connection and flange connection. Flange type connection is commonly used mechanical connection mode, is the current marine exploration pipe back one way. The deep-sea flange connection technology, emphatically introduced the dielectric operation equipment development status, and its working principle were summarized, in order for the flange connection tool developed to provide research train of thought. Pipeline connector is divided into toothed ring pipe connector, a single card ordinary type pipeline connector and lengthened single card connector. Tooth ring pipe connector can be connected with different pipe diameters of different material pipeline, welding free without flange connection, increase the bearing force. Tooth ring pipe connector inside the gear ring stainless steel ring is placed, so that products in the pipeline connecting the gripping force played a significant role. Single card type connector is a replace flange, pipe hoop and welding methods and new products. Non welding joint without flange connection, permitting axial angle deviation. Single card ordinary type pipeline connector with a built-in rubber ring grooves of the special design, the greater the pressure sealed more tightly. Steel shell using 304, 316 stainless steel, the surface made special treatment, the corrosion degree of itself 3-4 times stronger than stainless steel plate. Lengthening type single card connector can be connected with different pipe diameters of different material pipeline, welding free without flanges on ground, permitting axial angle deviation. Greatly increased the connection length. Single card extended type pipeline connecting device increases the length of the product, so that some of the need of pipeline bearing design solved very well.

Connector structure and function

Subsea tieback is a deep-sea pipeline laying important part. Subsea tieback technology refers to the new development of health production pipeline with the existing network, make full use of existing facilities, the marginal oilfield development becomes economy of small, the main contents include: pipeline and platform, pipeline and pipe network connection connection, pipe and vertical pipe connection and pipe connection between etc.. Deep-sea flange connection technology of subsea tieback technology, is the submarine pipeline through the flange bolt.

Joint connections, realization of pipe laying technology. Deep-sea flange connection tool is applied to submarine pipeline under water operation technology and a kind of special equipment. Equipment can be completed submarine pipeline flange connection, is the last step to take. It also can be used in the underwater repair, suitable for all types of sea area and different depth requirements for industry. Because divers in the deep seabed cannot directly construction, only in the underwater robot ROV ( Remotely OperatedVehicle ) auxiliary operation, at the same time deep and has high static pressure, corrosion resistance and other characteristics, leading to deep-sea flange connection design is very difficult. Design of remote control law LAN connection tools will greatly enhance our country in subsea tieback technology.