Key points for installation and operation of blind flange
2021-11-22 16:49:59 COMMENT：0 HITS：
There are holes on the blind flange, which can be threaded with bolts to connect the two flanges tightly, and the flanges are sealed with gaskets. According to the connected parts, it can be divided into container flange and pipe flange. According to the structural type, there are integral flange, looper flange and threaded flange. Common integral flanges include flat welding flanges and elbows.
In pipeline engineering, flange blind plate is mainly used for pipeline connection. A flange plate shall be installed for various pipelines to be connected. Threaded flanges can be used for low-pressure pipelines, and welded flange blind plates can be used for pressure above 4kg.
The flange blind plate is temporary to seal the pipeline, which is different from the general welding. The flange blind plate can be disassembled to facilitate the reuse of the blind pipeline in the future. Flange blind plate is a flange without hole in the middle, which is used to seal the pipe plug. There are many types of sealing surfaces, including plane, convex, concave convex, tenon and groove surface and ring connecting surface.
Flange blind plate belongs to flange pipe fitting, which refers to pipe fitting with flange (flange or adapter). It can be cast, threaded or welded. Flange connection refers to a pair of flanges, a gasket and several bolts and nuts.
The gasket is placed between the two flange sealing surfaces. After tightening the nut, the deformation occurs when the specific pressure on the gasket surface reaches a certain value, and the uneven part on the sealing surface is filled to make the connection tight. Flange connection is a detachable connection.
A sealing point shall be added between the two flange blind plates, and then fastened with bolts. Flange blind plates with different pressures have different thicknesses and use different bolts. When pumps and valves are connected with pipes, parts of these equipment are also made into corresponding flange shapes, also known as flange connection.
All connecting parts closed at the same time with bolt connection at the periphery of two planes. Flange blind plate can show a good role and value in a certain field and industry, give full play to a certain role, need to constantly produce a certain function and value, have certain performance and advantages in pipeline connection, and play an important value and trend.
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