nouvelles de l'entreprise What are the different types of dish heads?

Common types of dish heads include hemispherical heads, elliptical heads, torispherical heads, conical heads, and flat heads. The following is a detailed introduction:

1、Hemispherical head: Shaped like a half - sphere, with the radius of the hemisphere equal to the radius of the shell it is attached to. The stress on the hemispherical head is evenly distributed, and it is suitable for applications requiring high - pressure storage or large - diameter vessels.

2、Elliptical head: Also known as an ellipsoidal head, it is the most common type of head, usually with a ratio of major axis to minor axis of 2:1. The height of the head is about a quarter of the diameter, which is more economical, and it is suitable for high - pressure occasions.

3、Torispherical head: Also called flanged and dished heads. Its geometry is composed of a crown radius and a knuckle radius. The crown radius is a fixed radius, and the knuckle radius is the radius to the outer edge. This type of head has good drainage when used vertically.

4、Conical head: It has greater inherent strength than flat heads. According to the angle of the cone, conical bottoms can provide excellent bottom drainage, which is convenient for the discharge of solids and precipitates. The ASME code limits the maximum included half - angle of conical heads without a knuckle radius to 30 degrees.

5、Flat head: Consisting of a toroidal knuckle connecting to a flat plate, it is inherently very weak and is generally not used on pressure vessels, but is sometimes used in the form of a welded cap - to - cap configuration to make external thick - wall expansion joints.