Dry gas seals are used in syngas (hydrogen and nitrogen) compressors
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Our company’s syngas compressors originally used floating ring seals, which have been in use for many years; occasional suspected leaks have occurred during operation. We now intend to switch to dry gas seals. I was wondering if any of you out there have successful cases of carrying out similar modifications that you could share?
Dry gas seals are too expensive~~
Do you have any insights? Are it transformation costs or operation and maintenance costs?
It’s the cost of renovation, I guess – a set of dry gas seals costs as much as an Audi. Generally, dry gas seals remain quite stable after operation and do not require maintenance.
Since I’ve decided to make changes, I need to be mentally prepared for the amount of money it will cost. What I really want to know now is whether this investment is worth it
Value… Nowadays, almost all compressors use dry gas seals, which are safe and reliable. Consider the advantages and disadvantages: In dry gas seals, the sealing surfaces do not come into contact during normal operation, which results in slow wear; therefore, their service life is longer compared to ordinary mechanical seals, and the maintenance interval is also longer. The disadvantage is that this type of seal requires the presence of sealing gas, and this gas enters the sealing chamber and mixes with the medium; hence, it is not suitable for use with certain special media ； A relatively expensive sealing assistance system (sealing gas balance system) is required, resulting in high overall manufacturing costs. Standard mechanical seals: Advantages: low manufacturing cost, relatively easy maintenance, a wide range of options available for seals suitable for various industries, mature technology, and easily available replacement parts ； Disadvantages: Since the sealing surfaces need to be in contact while driving, its service life is relatively shorter compared to that of dry gas seals, requiring frequent maintenance
I just want to know how my peers are using it. If possible, we’ll also go and take a look in person; at that time, we might have to bother the fellow sailors as well;P
For safety reasons, dry gas sealing must be used. It is safer; however, the floating ring approach is less secure than dry gas sealing. But the investment required for dry gas sealing is higher, so it’s advisable to consult several manufacturers to compare prices and solutions
Most domestically produced dry gas seals do not meet quality standards; I am familiar with imported ones. . A compressor that costs over 1 million yuan – if a dry gas seal is installed, the price doubles~~~ The maintenance costs are basically negligible~~~
How about changing it to a labyrinth seal? The centrifugal and turbine compressors used in the past used this type of seal; feel free to contact us if there are any issues
Who says domestic products are not up to standard? There are many examples of imported seals being adapted for domestic use.