Pressure Vessels

Each pressure vessel that we manufacture is per the American Society of Mechanical Engineers (ASME) code. As a leading ASME pressure vessels manufacturer, our specialty lies in working with a variety of alloys, pressures, & designs to meet your custom requirements. More »

Weld Overlay and Clad Vessels

Our weld overlay and clad vessels are fully code-compliant. We use our advanced welding techniques to their full capabilities to offer you the finest overlay/clad components and pressure vessels. More »

High Pressure Vessels

We hold the American Society of Mechanical Engineers (ASME) U, U2, and U3 stamps, and have the capabilities and resources to manufacture ASME high pressure vessel to your exacting specifications. More »

Autoclaves

We hold the American Society of Mechanical Engineers (ASME) U, U2, U3, PP, & S stamps, and have the capabilities and resources to manufacture autoclaves to your exacting specifications. More »

Heat Exchangers

We specialize in the design, engineering, and fabrication of Shell and Tube Heat Exchangers, including thermal calculations. All of our units are built in strict accordance with the latest edition and addenda of the A.S.M.E. Code, Section VIII Division 1, 2, or 3 and T.E.M.A.” More »

 

Challenges in High Pressure Vessels Design

The pressure vessel industry is one that doesn’t leave any loose ends when it comes to safety. There are a number of strict rules and guidelines that have to be followed. This is because the design and manufacture of high pressure vessels has to be precise; otherwise it can result in fatal accidents.
High Pressure vessels
The ASME has provided a number of standards, which high pressure vessel manufacturers have to adhere to. But like any other industry, despite all precautions being taken, there will always be engineering challenges to face.

1.Shell Design: Whether spherical or cylindrical, shells have to be constructed with the right type of material and thickness. If a vessel shell is made of too thin of material for the pressure contained, the shell may fail leading to possible fatalities. In addition, if the wrong material is selected for the process, failures may result from this too. Also, the demands for vessels that can take pressures higher than 10,000 psi are increasing, which is a challenge for high pressure vessel manufacturers.

Solution: Once the requirements of the client are understood, a variety of solutions can be used:
• Spherical shaped cylinders have almost twice the strength of cylindrical pressure vessels.
• Custom pressure chambers can be built for extremely high pressures.
• Vessel materials can be selected that have increased tensile strengths resulting from specialized heat- treating processes.
• Specialized autofrettaging can be implemented

2. Size:Expenses of high pressure vessels increase with the size, pressure, and configuration. Many clients have custom demands, and many a time, the size and shape may be difficult to produce.

Solution: Many high pressure vessel manufacturers have created in-house facilities for design, fabrication, manufacture, and testing of components. This is often a better option than third party outsourcing. It gives manufacturers the ability and option to come up with solutions that will help create the final product in a timely fasion.

3. Nozzle Cracks: During operation it is possible that the nozzle of the pressure vessel can crack. There are many reasons for this:
• The increase in temperature during normal operation
• A poor functioning support system
• Lack of adequate weld filler when welding the nozzle to the vessel

Solution:
• Create support systems that will allow the vessel to expand and contract.
• Use the correct weld filler when adding the nozzle
• Put the vessel through rigorous quality testing

There will always be challenges when it comes to designing high pressure vessels. With the advancement of technology and stricter guidelines, perhaps such problems will become easier to manage. If you would like to know more about high pressure vessels, you can visit www.didionsmech.com.

Show Buttons
Share On Facebook
Share On Twitter
Share On Google Plus
Share On Linkdin
Share On Pinterest
Contact us
Hide Buttons