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Y21 Steam Turbine Generator Set

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Product Description

　　The Y21 steam turbine is a multi-stage condensing steam turbine. Its flow path features either a double-row velocity-compounding stage (or a single-row velocity-compounding stage) along with seven to nine pressure stages. As a modular turbine, the actual number of stages used depends on the turbine’s output power, rated speed, inlet steam pressure, and temperature, and is optimally designed to ensure high-efficiency operation at the rated power output.

　　The steam turbine operates at a speed of 3,000 r/min, with an output power range of 3,000 to 6,000 kW. The governing system employs either a fully hydraulic governor or an electro-hydraulic regulation method (using either the WOODWARD 505 controller plus CPCⅱ electro-hydraulic transducer or a domestically produced DEH electro-hydraulic control system). The turbine features multi-valve nozzle regulation arranged in a double-layer configuration. The Y21 steam turbine is a multi-stage condensing turbine that can be used both as a condensing turbine driven by large rotating equipment such as fans and compressors—operating at variable speeds—and as a condensing turbine driven by generators—operating at constant speeds. It has a very broad range of applications and is suitable for a wide variety of operating conditions.

Model	Y21	Model	Y21
Rotational speed range (r/min)	3000	Series	A single (or double)-stage velocity-compounding stage + 7–9-stage pressure stage
Power range (kW)	3000-6000	Steam inlet diameter (mm)	150-250
Steam inlet pressure range (MPa)	0.5–3.43	Exhaust port diameter (mm)	1100
Steam inlet temperature range (℃)	160-450	Regulation system type	All-hydraulic control system or electro-hydraulic control system
Steam flow rate (t/h)		Turntable type	Manual turning or electric turning

Y21 Product Technical Specifications

Product Model Product Model	Factory code Factory code	Rated power (kw) Rated power	Rotational speed revolutions per minute speed	Steam inlet pressure MPa Pressure into the steam	Steam inlet temperature (℃) Incoming temperature	Exhaust steam pressure ( MPa ) Exhaust pressure	Steam consumption rate kg/kWh Vapor rate
N6-3.43	Y21	6000	3000	3.43	435	0.008	4.76
N3-1.08	Y21	3000	3000	1.08	185	0.008	7.88
N4-1.27	Y21	4000	3000	1.27	280	0.008	6.46
N4.5-1.25	Y21	4500	3000	1.25	250	0.008	6.8
N5.5-2.35	Y21	5500	3000	2.35	390	0.008	5.4