What happens if there is sudden air leakage in the valve of the liquid phase? Can the valve still function properly under the same temperature and pressure conditions?
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What happens if there is sudden air leakage in the valve of the liquid phase? Can the valve still function properly under the same temperature and pressure conditions?
What do you mean by \"normal\"? If the set value is 50%, then a value of 50% at the actual site counts as normal – is that accurate? Or do you need a stable mass flow rate? How can stability be achieved when there is such a large difference between the gas density and the liquid density?
10MPa-1.0MPa
High pressure directly leaks into low pressure; process interlocks are usually in place in such situations
But how can I determine if there is air leakage? Should I set a high pressure interlock to shut off the valve?
First, it is necessary to determine whose parameters are to be linked; for example, if it is flow rate, then the value measured by the flow meter is compared with the set value and adjustments are made. In this case, gas-liquid entrainment can cause fluctuations (as pressure signals change due to variations in the medium conditions). In the case of a comparison between the set liquid level value and the measured value, if gas-liquid entrainment occurs, the amount of liquid flowing in/out changes, as the gas circulating through the valve occupies the space that should be occupied by the liquid, thereby creating obstruction. . . . . .
Then how about determining it by measuring density? Can it be more stable?
For setting up intuitive detection, not all processes can be configured simply by making settings; it is recommended to use the process display based on other control conditions as a means of early prediction, which can help prevent gas-liquid entrainment. For example, the analysis of medium components remains unchanged, as do flow rate, temperature, pressure, etc. In particular, changes in the components are quite noticeable and can be predicted in advance.
An emergency shut-off valve that activates when system pressure rises can be installed on the pipeline.
I’d like to know the exact location of the valve, and whether the back route is at low pressure