The Key Technical Of Withdrawing And Releasing Winch Design For Deep-Sea Fiber Thin Cable

Currently all countries have problems because of reduced resources, caused explore new resources boom. Especially in the field of deep-sea resources, underwater equipment used to explore different depths(such as HOV, ROV submersible), it is currently being used in the most intuitive underwater cutting-edge technology and equipment. The ROV, deep sea towed body deep-water operation equipment such as cloth work mode generally divided into two stages: one is through the bearing winch equipment from the mother ship to a certain depth of underwater; the second through the umbilical cord rope or micro optical cable with large depth of underwater equipment operation, at the same time to the deep sea power equipment, to deck units transmit real-time information.Nowadays, people have set our sights on the deep ocean, especially in the world’s deepest trench-Mariana Trench. The development of deep-sea areas, to promote the development of underwater equipment operating depth increasing functional requirements of the equipment continues to improve, with a length of cable with the use of winches and their own underwater weight is increased, the cable winch drum wrapped with layers continue increase with the size of the cable under tension is increasing. Winch during laying deep-sea recovery device, prone to subsea equipment to withstand the mother ship heave movement and traction with cable tension is too large, chaotic cable appears on reel(empty slots, bite cables, cable back), cable clip, cable with its breaking even, losing underwater equipment and other undesirable phenomena. In short, as the bearer of underwater winch device core equipment, it can adapt to the complex sea conditions, to meet the requirements of equipment, providing a stable and secure operational capacity, protect the system from undesirable phenomenon, directly related to the deck and underwater systems equipment safe and normal operation and staff. Winches for deep sea use, does not have a complete and effective domestic and international deep-sea winch system.For the use of depth of equipment in the deep sea, the traditional winch has been unable to meet the requirements of the use of deep-sea winch operations. In the case of deep-sea equipment for complex conditions fixed-point operations, this paper carried out research on deep dipping winch system, the design of a complete set of ten thousand meters deep sea winch system level, and its key core system: laying recovery system, automatic discharge cable systems, heave compensation system and reduce tension system of a clear division of work and technical studies. Ten thousand meters by grade fiber thin cable enables fast communication, although light weight, small diameter, but with some features tension bearer; by laying recovery system to achieve the functionality and features of the belts passive cable release cable used; through automatic row cable system implements a ribbon cable neat, orderly arrangement, and reduce manual labor and improve work effectiveness; heave compensation system to make up for by the mother ship heave uncontrollable movement to prevent uncontrolled movement of the mother ship with rope tension impact; by reducing the tension of the mooring system implementation in the form of low tension into the roll, effectively ensuring the uniform with cable, neatly arranged, preventing cable chaos, loose cables and other undesirable phenomena.This paper around the fiber level meters thin cable to carry out the development of complete sets of deep-sea winch system, a detailed study of the cable tension control, mainly reflected in the active force and passive compensation tension control, prevent cable tension transient increase, to ensure the cable tension in the normal form of work. Taking into account the weight of the cable, the traditional cable with a large proportion of the general will directly lead to a significant change in the tension of the cable. One of the innovations of this paper is the proportion of small, small diameter of million meters of optical fiber thin cable, by cable fast to the surface emits the communication and provide equipment for deep-sea power and had a tension bearing capacity. Consider the mother ship by sea wind, wave and current effect, will produce different degrees of vertical roll, roll, heave phenomenon. In this paper, the design of the mechanical drive type heave compensation system, effectively prevent the ribbon cable breakage and loss of equipment condition caused due to the movement of mother ship is not controllable. Hoisting with cable tension caused by a large block cable, cable and disorderly cable clamp problems is proposed for the first time, a driven pulley reduction tension device, the device through the release of tension, low tension in cable winding.This paper describes the overall structure design of deep sea winch, describes the deep sea winch works, development characteristics and performance requirements, eventually forming a complete set of deep-sea winch overall structure design; The basic parameters of the complex sea conditions, with the use of deep-sea operating equipment and fine with basic cable parameters and the entire deck of mother ship dipping basic parameters of the system. Less tension means acts set forth in principle based on the combination pulley structurally different forms put cloth, established a relationship between characteristics of reducing tension between the drive wheels and the ribbon cable, and focuses on the tension between the pulleys Friction Angle, parameters such as the number of pulleys impact relationships. A detailed comparison of the data results in two models, analysis, and make the appropriate conclusions, to verify the effectiveness of the device reduced tension, deep-sea winch provided key technical support.In summary, this paper focuses on a complete set of deep-sea winch system, with ten thousand meters on the level of deep-sea winch thin cable used to carry out in-depth research of key technologies, and the development of a new type of heave compensation system and reduce tension and related systems technology analysis and experimental verification, to achieve a multi-functional integrated deep sea winch used for the development and use of deep-sea equipment provides the critical core technical support.