Turbine conditioning system conditions and changes

The main function of the regulating system is to control the flow of steam through the opening of the regulating valve so as to adapt to the changes of the pump load, speed or steam condition. Pumps are usually available for backup with relatively low power. According to the APl610 standard, the steam turbine implements the APl611 "General Purpose Steam Turbine for the Petroleum, Chemical and Gas Industries" standard. The governor is normally equipped with the lowest A-class oil speed governor in the standard NEMA-SM23 "Steam Turbine for Machinery Drive" and the B-speed governor (oil or electric) for high-power magnetic pumps. Governor technical characteristics shown in the table. Turbine governor technical characteristics NEMA standard grade Characteristic Index A grade B grade C grade D grade Maximum speed inequality /% Insensitivity /% 10 ± 0.75 b ± 0.50 ± 0.25 0.5 ± 0.25 Maximum dynamic speed up /% trip Speed ​​/% 13 115 7 110 7 110 7 110 Note: 1. Trip speed (%) is based on the highest continuous speed. 2. The maximum speed is not equal = (no-load speed - full load speed) / rated speed X100% 3. Insensitivity is the maximum speed change rate Maximum speed change rate = (higher than the speed of the set speed change - lower than the set speed Of rated speed X100% 4. Maximum dynamic speed = (output power at zero speed - rated speed) / rated speed X100% 5. General Purpose Steam turbine often configuration NEMA standard A, B, special purpose Turbine often equipped with D-class. You may also be interested in Magnetic Pump, High Temperature Magnetic Pump, Stainless Steel Magnetic Pump, Pipeline Pump, Vertical Pipeline Pump, Horizontal Pipeline Pump, Pneumatic Diaphragm Pump, Electric Diaphragm Pump, etc. Welcome!

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