Head cap

Head and pipe cap are components used to seal the ends of containers or pipelines. The following is an introduction to them:

Definition and Function

Head: usually refers to the component used to seal the end of a container to isolate its internal and external media, also known as an end cap. It is a major pressure bearing component of a pressure vessel, mainly used for pressure vessels such as storage tanks, heat exchangers, synthesis towers, reactors, and boilers.

Pipe cap: also known as plug, cover, pipe cap, or blind head, used to seal pipelines, mainly used in pipeline systems. Its pressure bearing capacity is relatively low, mainly meeting the needs of general pipeline systems.

type

Head: According to surface shape, it can be divided into convex, conical, flat, and composite shapes. Among them, convex head is widely used, including hemispherical, elliptical, disc-shaped, and spherical head.

Pipe cap: Common types include circular pipe caps, square pipe caps, etc. Circular pipe caps are more commonly used, and their shape is similar to the convex head in the head, but their size is relatively small.

difference

Connection method: The head is generally fixed at the port of the pressure vessel by welding and cannot be disassembled; The pipe cap can be fixed at the end of the pipeline by threaded connection or other means, and has a certain degree of disassembly.

Inner diameter size: The inner diameter size of the head has a large span and can adapt to pressure vessels of different sizes; The inner diameter of the pipe cap is relatively small, and the commonly used pipe cap diameter generally does not exceed 300mm. When the pipe diameter exceeds this range, a head is usually used to replace the pipe cap.