Stall is a fan axial fan or centrifugal compressor basic attributes, each impeller stall will occur unstable conditions, it is invisible, the only instrument with high sensitivity, high-frequency tester can detect. Erchuan profiling of vibration is. When a surge occurs, flow, pressure and power ripple and noise accompanying the desulfurization fan, in general it is clear that even very intense. But there should be certain conditions surge occurs, the same fan installed in different systems, some surge occurs, and some do not occur. When the stall occurred, although conditions near the impeller has fluctuated, but the entire wind turbine flow, pressure and power is stable and can run continuously. Erchuan vibration occurs when, due to a substantial pulsating flow, pressure and power can not be maintained during normal operation of the stall, the fan characteristic curve can be measured. But the surge, because conditions pulsation induced draft fan Y9-35 desulfurization price, can not be properly measured surge occurs only in the fan characteristic curve slope from the peak to the left section, the pressure drop is caused stall. The stall phenomenon exists in the entire zone to the left of the summit. The two are closely related, you can say that there is a stall asthma causes vibration. FBCD series of mine explosion out of rotating axial local fan Y9-38 composed by two hosts work with desulfurization tower fan, two-stage impeller rotates in the opposite direction. That is one of the impeller rotates clockwise, counterclockwise rotation of the impeller desulfurization two draft fan Y6-51, leaf number two mutually prime. Air is obtained from the energy level after the second impeller wheel booster sent. In addition to increasing the secondary impeller flow energy, but also ordinary axial fan in both static vanes function at the same time to get oriented straightening velocity component in the circumferential direction, straighten the air impact, increasing the flow of energy, reducing the wake vortex and reduces the noise. Desulfurization induced draft fan Y4-73-24D | Zibo Blower | Fan Co. desulfurization cited by Zibo Blower. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is an industry leader in Shandong Zibo, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Zibo Blower leadership with the staff warmly welcome all inquiries negotiations to create a better future Zibo Blower.