What is interlock in steam turbine?

Interlocks: Are the programmed or hardwired control systems to protect systems and improve the operation reliability. This system initiates automatic corrective actions to stabilize the unit quickly.

How many turbines does steam have?

In order to match steam production to heat demand, there are three types of steam turbine in common use for CHP plants. These three are called a back pressure steam turbine, an extraction steam turbine and a condensing steam turbine. Each type will suit a different configuration of plant.

Why steam is used in turbine?

Because of the high pressure and high kinetic energy, steam turbines are mostly used. As steam contains thermal energy, high pressure is obtained for running the turbines, to generate electricity.

What is interlock and protection?

The interlock and protection system is used to ensure safety of equipment and personnel as well as stable operation of a unit. This system initiates automatic corrective actions to stabilize the unit quickly. The protection scheme is developed to trip the equipment automatically with or without time delay.

What is a boiler control interlock?

Boiler interlock isn’t a physical control device. It’s a wiring arrangement that prevents your boiler from heating your home when there’s no need for it, for example, if the temperature that you set on the thermostat has been reached.

How efficient is a steam turbine?

Multistage (moderate to high pressure ratio) steam turbines have thermodynamic efficiencies that vary from 65 percent for very small (under 1,000 kW) units to over 90 percent for large industrial and utility sized units. Small, single stage steam turbines can have efficiencies as low as 40 percent.

Why is steam used?

Steam is regularly used for propulsion (as a driving force) in applications such as steam turbines. The steam turbine is a piece of equipment that is essential for the generation of electricity in thermal electric power plants. Instead, high pressure saturated steam is typically used.

What is interlock boiler?

Boiler interlock isn’t a physical control device. Instead it describes how the system has been wired in. It’s a wiring arrangement that prevents your boiler from heating your home when there’s no need for it, for example, if the temperature that you set on the thermostat has been reached.

What is electrical interlocking?

An electrical interlock is an interlock that is used to restrict current flow between two or more devices. These types of interlocks use normally open and normally closed contacts to prevent another device from turning on.