High Current Slip Rings in Shipbuilding Industry

As an important component of modern manufacturing, the demand for high-current slip rings in the shipbuilding industry is steadily increasing. Almost all modern ships are equipped with navigation radars, making high-current slip rings an indispensable component of marine navigation radars. Moreover, some specialized ships are equipped with mechanical inertial navigation systems, which also include high-current slip rings. Typical application stations for high-current slip rings are in cranes and lifting equipment of large engineering ships, as well as in special-purpose ships using full-rotation electric propulsion systems. 

As a leading player in the international slip ring industry, JINPAT has developed hundreds of products for these two types of equipment, with most of them being high-voltage and high-current models. Some propulsion systems even use high-current slip rings with power ratings of up to several tens of megawatts. Taking the example of cranes and lifting equipment on engineering ships, whether it is specialized floating crane ships for offshore operations, surface crane ships, wind turbine installation ships, or lifting equipment on offshore oil drilling platforms, JINPAT high voltage and high current slip rings have wide applications.

Small cranes on board ships with lifting weight usually adopt single-function high current slip rings that do not integrate weak signal units or pneumatic and hydraulic units. Among the slip rings produced by JINPAT for offshore crane applications, this type is the most common, featuring a box-type structure where the stator and rotor are placed independently in one container. On the other hand, ordinary slip rings on board ships usually use ordinary steel materials for the casing with relatively lower protection rates.

However, for some special equipment such as crane slip rings used in oil drilling platforms, 304 stainless steel or high-quality steel materials are used, and the plate thickness is several times that of the shell used in ordinary crane slip rings, which enables the product to meet specific explosion-proof ratings. Therefore, slip rings with explosion-proof capabilities have higher protection ratings. A few high-current slip rings on ships for offshore crane applications may adopt an integral cylindrical structure, which facilitates achieving higher protection rates.

As for propulsion system applications, JINPAT offers a variety of products, including ordinary high-power single units and multi-unit slip rings that integrate high-current units, pneumatic and hydraulic slip rings, and electrical signal slip rings. In specialized slip rings for propulsion systems, there is a class of products with very high operating voltages, typically exceeding 3300 VAC, with enormous power transmission capabilities, often exceeding 1 MW. JINPAT has successfully delivered multiple specialized slip rings with power transmission capacities up to 7.5MW and has the capability to R&D and mass produce specialized slip rings with a maximum capacity of 15MW.