پشتیبانی و انجام سایر خدمات در زمینه کامپوزیت، اپوکسی و …
- Perform hydraulic calculations of composite pipelines
- Aries impact calculations in composite pipelines
- Stiffness calculations for pipes and composites
- Buckling and Buckling Calculations
- Stress analysis and validation using reputable software such as abaqus
- Design and perform calculations related to determining the thickness of composite pipes and tanks and other complex parts
- Design of short-term and long-term tests to determine the properties of parts made according to valid standards
- Perform the necessary calculations and tests to determine the pipe design diagram of pipe envelop
- Calculations and designs for abutments used in composite pipelines
- Calculation and design of anchor blocks used in composite pipe lines
- Determining the production method of parts according to the expected mechanical properties of the product
Stress analysis of composite pipelines using Caesar II software
- Keep the amount of stress in the pipes and fittings in the system lower than the allowable values provided in the standard codes.
- Keep the load on the equipment nozzle, which is connected to the piping system, lower than the allowable values provided by the manufacturers and standard codes.
- Keeping the tension created in the tank nozzle at the connection to the piping system based on the allowable values provided by the manufacturers and standard codes.
- Calculate and design the load on the support in order to select the type and size of the supports.
- Determining piping system displacements to check these values at equipment connection points and other points.
- Investigation of dynamic problems in the piping system.
- Help improve system design.
Figure (5): Idealized Envelope diagram
Assigning a confidence interval (usually) to compressive stresses is an implicit change given in this range. This coefficient is not assigned to other times. The said change establishes the following conditions:
|P des =||Permitted design pressure|
|F 1 =||Reliability is usually 0.85|
|F 2 =||Reliability is usually 0.67|
|F 3 =||Permissible residual stress ratio, after applying equal mechanical loads|
|σ b a =||Axial flexural stress due to mechanical loads|
|r =||σ_aa (0: 1) / σ_a (2: 1)|
|σ_a ^ b (0: 1) =||Long-term axial tensile strength without compressive load|
|σ_a ^ b (0: 1) =||Axial tensile strength in the long run only in the presence of compressive load|
|LTHS =||Long-term hydrostatic resistance (allowable environmental stress)|
|LTHP =||Long-term permissible hydrostatic pressure|
support weightSupport engineers should first determine the location of the weight supports and, as a first point, consider that the location of some of the supports should be as close as possible to the concentrated loads. The maximum distance between two weight supports on horizontal pipes depends on the maximum deflection of the pipe. The allowable distance between the weight support for GRP pipes is based on the pipe size according to the table below
Permissible distance between weight supports for GRP pipes (UKOOA)
B) Execution of weight support under the vertical valve
A) Different applications of weight support on vertical pipes
- Earthquake control.
- Expansion guidance.
Run the guide guide under the valve flange
Execution of Stopper support
Execution of anchor support under the valve flange
The support that does not allow the pipe to move in the opposite direction of the weight or in other words prevents the pipe from lifting is called Hold Down.
Hold Down Support