| Customization: | Available |
|---|---|
| Certification: | CE, ISO |
| Color: | Customized |
|
Still deciding? Get samples of US$ 30/Piece
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
A pressure vessel head is a critical component that seals off the ends of the cylindrical section or shell of a pressure vessel. Known by various names such as Dish Ends, Formed Heads, End Closure, End Caps, Vessel Ends, and Vessel Caps, the most popular term remains Dish ends.
There are four fundamental types of pressure vessel heads, commonly referred to as Dish ends, extensively utilized in the fabrication of Pressure Vessels.
Flat heads represent the simplest form of pressure vessel heads, though they are not widely favored. With a lower capacity to withstand pressure due to a restricted radial section, they are not as economical, as maximum stress is applied to the flat section.
In the context of Flat Heads, terms such as Flat Head Inside Diameter (ID), Knuckle Radius (R), Dish End Total Height (H), and Straight Face (SF) are commonly used. A general drawing representation of Flat Heads is shown above.
Ellipsoidal heads are the most commonly utilized pressure vessel heads, owing to their superior radial section for pressure distribution. They outperform other head types in pressure endurance and are economically advantageous as their dish end thickness typically matches the shell thickness under equivalent design conditions. The prevalent configuration follows the 2:1 Ellipsoidal Section.
Key terms for 2:1 Ellipsoidal Heads include Inside Diameter (ID), Crown Radius (C.R), Knuckle Radius (K.R), Dish End Total Height (H), and Straight Face (SF). A typical drawing is presented above. Despite requiring more forming time than Flat and Torispherical Heads, these are the most cost-effective pressure vessel heads.
Widely used, Torispherical Heads offer ample radial sections for pressure distribution, though they sustain slightly less pressure compared to Ellipsoidal Heads. Despite being less economical than Ellipsoidal Heads, they are favored for their reduced forming time.
For identical design conditions, the thickness of Torispherical Heads is approximately 1.77 times that of the shell for equivalent design pressure and temperature.
For Torispherical Heads, terms such as Inside Diameter (ID), Crown Radius (C.R), Knuckle Radius (K.R), Dish End Total Height (H), and Straight Face (SF) are used. A general drawing is provided above.
Their simpler construction compared to Ellipsoidal Heads results in less forming time, making them a preferred choice. These heads are also known as Flange and Dished Heads.
Hemispherical heads, a staple in pressure vessel fabrication, offer the largest radial section, maximizing pressure distribution. For equivalent design conditions, the thickness of Hemi Heads is about half that of the shell for the same pressure and temperature.
These heads are more economical than other types but require the most forming time.
In the realm of Hemi Heads, several key terms are essential: Inside Diameter (ID), Crown Radius (R), Total Height of the Dish End (H), and Straight Face (SF). The selection of Dish Ends is heavily influenced by design conditions and the specific requirements for pressure vessel heads.
There are four fundamental types of dish ends commonly utilized in the fabrication of pressure vessels. The terminology associated with these dish ends is primarily determined through standard calculations based on their inside diameter. From a fabrication standpoint, it is crucial to compute various elements. These essential calculations encompass Dish End Terms, Blank Diameter, Weight, Surface Area, and Volume, all integral to the precise manufacturing of Dish Ends.
){kind=link}