Pressure Vessels
Pressure vessels are closed tanks whose pressure inside is higher than the ambient pressure. Here, computational proof is often provided following the AD datasheets. Often, simple analytical methods or simplified FEM calculations are suffcient for such analyses.
An enclosed component designed and constructed to contain fluids under pressure, including directly attached parts up to the device for connection to other equipment. A tank may have several pressure chambers.
Line components intended for the passage of fluids, which are connected together for installation in a pressure system. Pipelines include in particular pipes or pipe systems, pipe fittings, equipment, expansion pieces, hoses or other pressure-retaining parts, if any. Heat exchangers made of tubes for cooling or heating air are treated in the same way as piping.
Devices intended to protect the pressure equipment when the permissible limits are exceeded. These devices include:
- Equipment for direct pressure limitation such as safety valves, bursting disc safety devices, buckling rods, controlled safety devices (CSPRS)
- Limiting devices that either trigger corrective devices or cause shutdown or shutdown and lockout, such as pressure, temperature or fluid level switches and measurement and control protection devices (SRMCR)
Devices with an operating function which have a pressurised housing.
Several pieces of pressure equipment which are connected by a manufacturer to form a coherent functional unit.
By Topic
Pressure Vessel Calculation at Merkle & Partner
Merkle & Partner focuses on the calculation of more complex tanks that can no longer be calculated with the simplified approaches. The analysis is based on finite element models of any geometry. Proof can also be provided with non-linear behavior, plasticity of the material, in-homogeneous temperature, etc.
An evaluation of the resulting deformations and stresses can be performed according to all common norms and standards (AD2000, ASME, KTA, EuroCode etc.).
- Thermal shock due to extremely cold or hot mediums (liquid gas, coolant etc.)
- Earthquake or explosion pressure wave
- Dynamic flange load from pressure surges
- time-varying (transient) pressure/temperature load which influences the operational strength of the component
An evaluation of the resulting deformations and stresses can be performed according to all common norms and standards (AD2000, ASME Sec. III + VIII, KTA, DIN EN 13445 etc.).
Calculation using the finite element method (FEM) helps our customers to save time and costs and can already provide indications of possible weak points and optimisation potential during development.
Topics of the Pressure Vessel Calculation
Flow Simulation of Pressure Vessels
- steady / unsteady flows
- laminar / turbulent flows
- in-compressible / compressible flows
- Flows with (coupled) heat transfer
- Flows with chemical reactions (including combustion)
- Multi-phase flows
Structural Analysis and Optimization of Pressure Vessels
- Reduce weight
- Minimize material costs
- Reduce assembly effort
- Suitability of alternative materials
- Topology optimization
- Design of Experiments (DoE)
- Behavioural Modeling Extension (BMX)
- AD-2000
- ASME Sec. 8 Div. 1+2
- ASME Sec. 3
- EN 13445
- EN 1591
- PD 5500
- TEMA
- KTA
- RCC-M
Proof and Operational Stability
Time-dependent pressure and temperature differences result in changing loads on the structure and thus the need for fatigue strength analysis.
For existing components, we support you in damage analysis with crack propagation calculation, among other things.
Detailed Structure Proofs:
- Load Capacity Check (LCC)
- Creep Strength Verification (CSV)
- Creep Strain Check (CSC)
- Proof of Receipt (PR)
- Stability Proof (SP)
- Verification of Stability (VS)
- Creep Fatigue and Cyclic Fatigue (CFCF)
Application Areas of Pressure Vessels
- Storage Tanks for the Oil and Gas Industry
- Creep Resistance of Compressed Air Tank Verification
- Tank Trailers and Containers
- Accumulator Tank
- Heat Exchanger
- Process Engineering Vessels and Apparatus (e.g. columns)
- heated / cooled containers as part of a plant
- Separator / Collector / Filter
- Pumps
Video
Contact our engineering office:
- +49 (0) 7321 9343-0
- kontakt@merkle-partner.de
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