Compressor anti-surge valve
Thread Content
I would like to ask everyone: are many anti-surge valves for compressors in China required to be imported? What are the bottlenecks restricting the technology of anti-surge valves for compressors in our country? Is it the design and selection of the valves, or is the monitoring and control system not up to standard?
I don’t know what basis you have for saying that; here, most of the anti-surge valves are domestically produced, and their performance and actual operation results are sufficient to meet the production requirements.
Domestic ones are fine; as long as there’s no shaking, I think they work just okay. It doesn’t matter if the sealing grade is low, that’s just my personal opinion!
To be honest, the surge valves available in China don’t really offer any guarantee in terms of quality... Those from abroad are better
I have been using domestic pneumatic valves, and there have been no issues with leakage or poor sensitivity. They are all available within a certain range. But I have also seen a certain domestic electric valve that has very high sensitivity. Domestic electric valves have also been used, and they tend to have more issues related to the valve body. I don’t know which one you mean. Which part, the specific specifications that apply.
Perhaps the sensitivity and precision of operation of the domestic actuators are not that good, but there are no other issues
The surge control of a compressor is similar to using a mobile phone: if your requirements are not high and you don’t care much about energy waste, any valve will suffice. The surge control capability of a unit is related to both the quality of the surge valve and the surge control algorithm; if either of these elements is inadequate, the surge control function will not work properly.
What was said upstairs is correct – the effectiveness of anti-surge functionality depends on the algorithm used. Control valves are relatively inferior in this regard; many companies choose imported valves for use as anti-surge valves, mainly because they consider such valves to be important for ensuring stability and minimizing failure rates. It’s not that domestic valves cannot be used.
Anti-surge valves are used in power units, which are generally the core equipment in factories. The flexibility, speed, and energy efficiency of process system control rely to a certain extent on anti-surge valves. Moreover, these valves are also crucial for protecting the power units; users of expensive or imported power units usually do not opt for domestic alternatives out of fear of taking risks. With the current industrial capabilities, it is possible to produce such products domestically; however, the cost of doing so is higher than that of importing them from abroad. Domestic manufacturers will not meet the required standards and will cut corners, aiming only to produce products that are functional enough.
Stall prevention valves used in power units are generally required to open quickly and close slowly, in order to prevent stall in the unit.
Is it needed everywhere? Both relief valves and anti-surge valves are widely used in domestic applications as well