Extraction Condensing Steam Turbine

Product details

Products Brief Introduction:

1. Extraction Condensing, one of the most versatile setups in terms of operation and intricate in terms of design. It provides a constant pressure steam through a controlled extraction at various loading conditions of the turbine-based on seasonal variations.

2. A control valve integrated with the steam path is provided at a predetermined stage. A partial steam flow is drawn out of the turbine at a constant pressure as per the process requirement. There are basically two types control valves a) Diaphragm, b) Passing/Throttle Valve that controls the flow of steam at a preset pressure accommodating the seasonal variation of turbine load.

3. The control system works on a closed loop feedback mechanism. The pressure at the user end is measured and a feedback is provided to the control system. Based on this error signal the feedback control system actuates a control valve designed to vary the area of the valve aperture and thereby regulate the pressure. This setup is applied for processes where the steam pressure is a critical parameter.

4. In some cases a nozzle/port is provided at a predetermined stage and an un-controlled high-pressure steam flow/bleed is drawn out of the turbine. This tap is provided before the controlled extraction in the steam path of turbine. Its utility is found mainly in LP heating requirements like de-aerator and processes.

5. Controlled/ Un-controlled condensing type turbines are used in Co-generation application and offer maximum cycle efficiency to the user.

Main Specifications

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