The invention discloses a power
plant ultrafiltration membrane integrity online diagnosis device and a control method thereof. The device comprises an
ultrafiltration membrane device unit, an integrity detection unit and a
control unit, wherein the
ultrafiltration membrane device unit comprises an ultrafiltration membrane
assembly, an ultrafiltration
system water
inlet valve is connected with an ultrafiltration membrane
assembly inlet and an ultrafiltration
system lower
discharge valve, an ultrafiltration membrane
assembly outlet is divided into two paths, one path is connected with an ultrafiltration
system water production manual valve, and the other path is connected with an ultrafiltration system upper
discharge valve; the integrity detection unit comprises an ultrafiltration air inletvalve manual
isolation valve, an outlet of the ultrafiltration air
inlet valve manual
isolation valve is divided into two paths, one path is connected with an ultrafiltration membrane assembly air
inlet valve set through an ultrafiltration air inlet valve, and the other path is connected with an ultrafiltration membrane assembly inlet. According to the invention, the stability of
water quality can be powerfully guaranteed, the operation economy and safety of a unit are improved, the influence caused by the use of ultrafiltration membrane equipment, especially the aging of the equipment or thedamage of the equipment after the continuous water
backwashing gas washing process, is reduced, the discovery and diagnosis of fault problems are improved, and the
hysteresis quality and randomness are reduced.