What are the disadvantages if the pressure difference for sealing the compressor decreases? Get bigger?
Thread Content
To give a brief explanation: this is a compressor that uses sealed steam and nitrogen for sealing. What are the disadvantages if the pressure difference of model 3807 decreases? ? I don’t quite understand. I hope a senior can explain it. Thank you
It’s not good if it’s too large or too small – isn’t there interlocking? If it’s too small, won’t the medium leak out? It depends on your process
This depends on your actual needs; too high pressure can cause the substance to enter the equipment and mix with the production medium, resulting in waste or affecting the quality of the production medium. If it is too small, it cannot achieve a sealing effect, resulting in leaks. It seems that high pressure won’t affect the quality of the medium used in equipment production; high pressure is simply a form of waste. If it does not affect its quality, a mixture exhaust pipe should also be installed.
There is a pressure interlock; I just want to know the purpose of this interlock – why was it designed in this way
This pressure difference refers to the difference in pressure between the nitrogen inlet and outlet; if this value decreases, it indicates that the labyrinth seal may be damaged. The cascade steam control valve is used to regulate the pressure and maintain it at an appropriate level, thereby preventing the medium from escaping.
Interlocking is of course for safety – the safety of personnel and the safety of equipment.
If the pressure of the sealing gas is too high, it should disrupt the balance in the pressures involved in the sealing process. A small pressure difference, with the pressure on the medium side being equal to that in the sealing gas chamber, indicates that the labyrinth seal is damaged. Under normal conditions, the throttling effect of the labyrinth seal reduces the pressure of the medium passing through it; the pressure of the sealing gas is then slightly higher than this reduced pressure, which enables sealing of the medium