Compressor secondary balance pipe
Thread Content
http://bbs.hcbbs.com/images/smilies/lol.gif The 3bcl459 compressors in our factory use dry gas seals, and the pressure of the primary buffer gas is adjusted based on the pressure in the secondary balance tube. May I ask what is the relationship between secondary balance pipes and balance pipes?
The secondary balance tube is a passage that leads the pressure from the primary dry gas seal gas source to the dry gas seal; it ensures the pressure difference within the primary dry gas seal device. The secondary balance tube is primarily used to counteract the remaining axial thrust
Thank you for the answer above; could you explain it in more detail?
Generally, compressors are designed with two types of balance tubes. One is the primary balance tube, which connects behind the balance disk to the inlet of the unit or to a certain stage; its main purpose is to balance axial forces. The secondary balance tube is located at the toothed part at the end of the unit’s shaft, and there is usually an air hole in the middle of those teeth to connect the two ends; its main purpose is to balance the pressure in the sealing chamber. If you still don’t understand, you can call 18980767809
The balance tube is actually built into the compressor itself; it is used to balance axial forces and reduce the pressure difference in the shaft end chambers, thereby minimizing leakage. The secondary balance tube mentioned by the original poster is used in the dry gas seal, and it is called secondary balance to distinguish it from the former. It is used in dry gas seals, and it serves to measure the pressure within the sealing chamber (which is different from the shaft-end sealing chamber mentioned earlier), so as to determine the pressure and flow rate of the sealing gas. For specific details, please consult the dry gas seal manufacturers. Personal opinion.
Thank you for the answer above; could you explain it in more detail?
4th floor is correct! Balancing the axial force with a balance tube once ； The secondary balance tube balances the pressure in the sealing chamber, ensuring that similar sealing chamber pressures are maintained at both ends
Well said, I’ve learned it too, but I still haven’t figured it out
The answer on the 4th floor is correct: pressure balance in the sealed chamber ensures that the inlet pressure for the primary seal is equal
I’m still confused. I’ve only just started working with compressors – could any experienced colleague please send me a rough sketch to illustrate it?
Is there a sketch with a similar structure? I’m not very clear about the internal structure of the shaft seal of the compressor.