The anti-surge valve of a heavy-duty gas turbine was activated and deactivated using compressed air and lacks the capability to maintain its position in the absence of air.In the event of a compressed air pressure loss,the compressor faces a significant risk of surging.In contrast to the early design of pneumatic actuators for similar units anti-surge valves,which opened by spring force and closed with compressed air,featuring a loss-of-air open-position retention function,the earlier design eliminated the risk of compressor surging during compressed air pressure loss.We intend to revert the pneumatic actuator of the anti-surge valve to the earlier design to address its lack of loss-of-air open-position retention capability.
关键词
燃气轮机/防喘放气阀/喘振/气动执行机构/失气开/三断保护
Key words
gas turbine/anti-surge valve/surge/pneumatic actuator/loss-of-air open-position/triple-break protection
维普
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