Marine Flanges Category and Features

The category of marine flanges: There are whole flange, lap joint flange and threaded flange. Rare overall flange with flat welding flange and butt flange. Flat welded flange less rigid, a detachable connection. According to the connected components can be divided into container flange and pipe flange. According to the structure type points. Suitable for pressure p≤4MPa places; butt welder flange, also known as high-neck flange, more rigid, suitable for places with high pressure and temperature. The connecting flange for marine flanges is a part that connects the pipe to the pipe. Connect to tube end. Flange has holes, marine flange is used for the flange on the ship. Can wear bolts, the two flanges closely linked. Flange sealed with gasket. First fixed on a flange, flange connection is the two pipes, fittings or equipment. Between the two flanges, plus flange pads, bolted together to complete the connection. Some fittings and equipment have their own flange, also belong to the flange connection.
Insulating Marine Flanges is a general term for pipe flange joints that have both the required sealing performance for buried steel pipelines and the electrical insulation required by electrical corrosion protection programs. It consists of a pair of steel flanges, insulating seals between the two flanges, flange fasteners and fastener insulation parts, and a pair of steel spools welded to the two flanges respectively.
Flange stiffness: Insufficient stiffness, resulting in excessive warping deformation, is often the cause of seal failure. Large rigidity, flange deformation is small, and can distribute the distribution of the bolt force evenly to the gasket, it can improve the sealing performance
Flange stiffness measures to increase: increase the thickness of the flange; reduce the force of the bolt force arm (ie, reduce the diameter of the center circle); increase the flange diameter.
Operating conditions: Operating conditions refer to pressure, temperature, medium. Simple pressure or medium factors on the leakage is not the main impact, but when the pressure, medium and temperature combined effect, the problem will be serious.
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