Hemispherical Head

The hemispherical head is a head consisting of half a spherical shell and a straight edge (short section of a cylinder). Hemispherical heads has the best mechanical properties and most economical materials used.

A hemispherical head ("hemi-head") gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves. ... The intake and exhaust valves lie on opposite sides of the chamber and necessitate a "cross-flow" head design.

Hemispherical heads are a popular choice for pressure vessels due to their ideal shape, which divides the pressure in the vessel equally across the head's surface. Also known as hemispherical tank heads or hemispherical dished ends, they're commonly used on liquid and gas storage tanks.

Hemispherical Head Description:

Hemispherical Head Photos:

Material:

Carbon steel tank ends/caps, Flat Dished Head: SA516 GR60N,GR70N

Stainless steel ELLIPSOIDAL DISHED END, elliptical tank head: SA240 304, 316

Titanium alloy Pressure Vessel Ends: SB256 GR1, GR2, GR5

Application:

Petroleum, chemical industry, water conservancy, electric power,boiler, machinery, metallurgy, sanitary construction etc.

PRESSURE VESSEL ASME HEADS, pressure vessel Large hemisphere ends, Small stainless hemisphere heads for tube end, Carbon steel hemisphere heads for boiler top, Recipientes a presion, etc

Hemispherical Head Package & Delivery:

What should be considered in the selection of the Vessel heads?

1. Customer requirements

2. Requirements of Chemical Process

Conical heads are used for vertical vessels of solid masses to facilitate the flow and discharge of masses. Elliptical head or spherical head for liquid masses.

Stirred pressure vessels should determine the shape of the head according to the shape of the slurry leaf and the flow form of the working mass.

3. According to the pressure. For medium and low pressure pressure vessels, ellipsoidal heads are mostly used. For high pressure and ultra-high pressure pressure vessels, spherical heads are mostly used.

4. Determine from the analysis of considering the stress situation. If the stress transition zone of ellipsoidal head is opened with larger openings and the local stress is too large, spherical head can also be considered.