Equipment hydraulic test
Thread Content
Currently, a 2-chamber mixing device is being designed: the design pressure for the inner cylinder is -0.1/0.4 MPa, with a design temperature of -105/155°C; the design pressure for the jacket is 0.6 MPa, with a design temperature of -35/164°C. Should the test pressure used for the hydrostatic testing of the inner cylinder be determined based on the maximum pressure difference, or should it be 0.4 MPa? Seeking help from experts
Check the stability of the common sections separately; do the checks for each section individually, and overpressure is not allowed!
The inner cylinder generates hydraulic pressure, with P_test = 1.25 * 0.4 * temperature correction； The jacket water pressure is adjusted according to the formula P_test = 1.25 * 0.6 * temperature; however, it is necessary to consider whether the inner cylinder might become unstable. If instability is a risk, measures must be taken to maintain pressure within the inner cylinder to ensure that it does not become unstable under the designed pressure difference.
Why not use a pressure difference of -0.7*1.25?
This post was last edited by zhangjuhua on 2016-2-21 at 15:47. When calculating the pressure, the pressure difference must be taken into account; however, the pressure used for stress testing is based on the design pressure. It seems to be the case that this is how it works