What is steam turbine control system?
A steam turbine control system is a closed loop system. The simplest application is one in which a turbine is used to operate a rotor to constant speed (Fig. 2). The controller senses the shaft speed, compares the actual speed with the desired set point.
How does a steam header work?
Steam exits the boiler through piping referred to as the steam header. The header also serves as a reservoir that feeds steam to the individual heating circuits. The steam header must be large enough to virtually eliminate pressure drop between the boiler and the beginning of the circuit.
What is the purpose of a header on a steam boiler?
A steam header is the main steam supply pipeline, its function is to deliver steam in as high level of quality (dryness) as possible to the general areas where steam is needed. It is a distribution pipe from a steam source. From it branches laterals to individual users.
What is turbine control?
The TMS Series™ 1000 Turbine Control System (TMS-1000) is a digital control system designed to provide enhanced control and protection for the Gas Turbine train while maintaining the original system functionality.
How does governor control steam turbine?
A steam turbine governor is a component of the turbine control system that regulates rotational speed in response to changing load conditions. The governor output signal manipulates the position of a steam inlet valve or nozzles which in turn regulates the steam flow to the turbine.
How does a low loss header work?
A low loss header usually has a drain at the bottom of it. Hot water passes through the header at a lower pressure than it would pass through the rest of the system. This reduction in pressure and speed allows time for any dirt and debris in the system to sink to the bottom of the header.
How much condensate is produced from steam?
1 kg of condensate at 5 bar g and 159°C produces 0.112 kg of flash steam at atmospheric pressure. This can be illustrated schematically in the table below. The total mass of flash and condensate remains at 1 kg.
What is a header valve?
A Header Valve is a valve that allows for the removal of combustion gas in an internal combustion engine. The valve vents into the exhaust manifold, also known as a header.
What is steam chest in turbine?
steam chest – the chamber from which steam is distributed to a cylinder. chamber – a natural or artificial enclosed space. steam engine – external-combustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder.
Where is the governor on a steam turbine?
Throttle Governing Of Steam Turbine:- When steam turbine controls its output speed by varying the quantity of steam entering the turbine is called Throttle Governing. It is also known as Servomotor methods. In this system, a centrifugal governor is driven from the main shaft of turbine by belt or gear arrangement.
Is a low loss header necessary?
You would likely need a low loss header if you have a very large home or business premises and you’re using a low water content boiler. Your low loss header will need to be sized correctly depending on the flow rate of water around the building.
What is difference between steam and condensate?
Condensate is the liquid formed when steam passes from the vapor to the liquid state. In a heating process, condensate is the result of steam transferring a portion of its heat energy, known as latent heat, to the product, line, or equipment being heated.
At what temperature does steam condensate?
Significant fuel savings occur as most returned condensate is relatively hot (130°F to 225°F), reducing the amount of cold makeup water (50°F to 60°F) that must be heated. A simple calculation indicates that energy in the condensate can be more than 10% of the total steam energy content of a typical system.
What is a header system?
In a gathering system, a pipe arrangement that connects flowlines from several wellheads into a single gathering line. A header has production and testing valves to control the flow of each well, thus directing the produced fluids to production or testing vessels.