Why does the safety valve activate when the pressure in the lockhopper during the quenching process increases faster?
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This post was last edited by lflsedin on 2016-12-8 at 22:11. Why does the safety valve activate when the pressurization of the quenching process tank happens faster, even though the set pressure has not been reached?
The quenching process should involve pressurization with high-pressure water; since water is incompressible, the pressurization speed increases as the pressure rises, which makes overpressure a likely outcome. Therefore, it is necessary to adjust the pressure control valve to an appropriate opening degree. As for the safety valve activating as you mentioned, we have encountered that issue as well – the valve activates before the pressure reaches the required level, and it needs to be recalibrated
Our lockout safety valve doesn’t activate even when the pressure reaches the set level!
As mentioned on the second floor, liquids can be considered incompressible, and pressure can be built up quickly. There are probably two reasons why the pressure safety valve did not activate, according to the poster: first, there may be an issue with the set pressure of the safety valve; second, although the pressure increased, the monitoring system failed to detect it due to certain settings, while the safety valve activated once the pressure exceeded its limit.