What should be considered in the design and manufacturing of high-pressure vessels?
Thread Content
As the title suggests, for high-pressure vessels at 20 MPa, what should be taken into account during design and manufacturing? What type of processing should be used for the shell, what type and processing method should be employed for the head, and what about other heat treatment procedures? Please give me some advice! Thank you!
It’s difficult to detail the key manufacturing points without mentioning diameter, material, thickness, and temperature
It’s difficult to detail the key manufacturing points without mentioning diameter, material, thickness, and temperature
The head shall be of spherical type, and the nozzles shall be either embedded or flanged types. If there is no safety valve, it must be indicated that a safety valve is installed in the pipeline, along with the diameter of that safety valve
The temperature does not exceed 100 degrees Celsius, with a minimum of -29 degrees Celsius; the diameter is 1500, and the thickness is unknown. What design standards should be applied, and how should it be manufactured? Is the casing of multi-layer type or forged?
Comprehensive Book on Chemical Equipment Design: High-Pressure Vessels, 2003. I hope this book will be helpful to the original poster
This is complicated. Is the casing intended to be made from thick plate coil? Or fully forged? The head size is related to whether you intend to install inspection holes. Small-diameter ones can have a flat cover. For large diameters, it’s a spherical head. If it is a thick plate coil, the housing should be hot-formed. The method of forming spherical heads needs to be asked from the manufacturer, as different manufacturers use different processes. If it is low-alloy steel, post-weld heat treatment is basically necessary. Reinforcement: Choose between embedded docking, insertion, or flush fitting depending on your pipe diameter. The type of welding joint can be selected according to the standard structures, or it can be designed by the manufacturer themselves. Non-destructive testing: It depends on your material; select according to GB150. By looking at the drawings from several design institutes, for high-voltage equipment, 100% RT+20 or 100% UT+100% MT is used. For high-strength steel and chromium-molybdenum steel, attention must be paid to the timing of inspections; UT or MT should be added after heat treatment and hydrostatic testing.