Overview[ edit ] Steam Turbine Governing is the procedure of monitoring and controlling the flow rate of steam into the turbine with the objective of maintaining its speed of rotation as constant. The flow rate of steam is monitored and controlled by interposing valves between the boiler and the turbine. The principal methods used for governing are described below. Throttle governing[ edit ] In throttle governing the pressure of steam is reduced at the turbine entry thereby decreasing the availability of energy.
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Beside Beside Bearing Bearing No. The electrical measuring and processing of signal offer the advantage such as flexibility, dynamic stability and simple relationship of complicated functional relationship. Presentation Description No description available. To control the initial run up and synchronization of the machine To assist in matching the power generated to that demanded by responding to the network frequency changes.
Electro-hydraulic controller block diagram Slide 8: Both the governors are connected in parallel. Hunting the Control Valve 4. Log In Sign Up. Maximum no Load Speed rpm 6. Maximum no Turbien Speed rpm Trip Test 6. Drain Fly bolt Location: Range of speed control is rpm. To open Stop and Control Valve 3. Converts Electrical Govedning to Hydraulic Signal 2.
Only one governor can be selected at a time through the process of hydraulic minimum selection. Speed up the Turbine by Rpm 2. Structure of electro-hydraulic controller: Functions of governing system: Practical Marine Electrical Knowledge. The presentation is successfully added In Your Favorites. If you wish to download it, please recommend it to your friends in any social system.
Governing begins after rpm Turbine Speed 5. Upload from Desktop Single File Upload. Changes Valve characteristics at low Load 2. Structure of electro-hydraulic control system: Two governors, electro-hydraulic and hydraulic are incorporated. Registration Forgot your password? Auth with social network: Between 40 to mw the turbine load is varied by changing the HP control valve throttling alone.
The valve characteristic changing mechanism is provide in IP follow-up pistons 2. Machine kw is measured and indicated as primary oil pressure. You do not have the permission to view this presentation. My presentations Profile Feedback Log out. We think you have liked this presentation. Go to Application Have a question? To reset all Mech. Control the Turbine speed to set-point42 56 3. Valve Characteristic changing Device giverning. Actual speed of the turbine is measured by using hall probes Range of speed control is wider rpm.
Operates Aux Follow up Piston. Related Posts
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Steam turbine governing