What is control oil in steam turbine?

What is control oil in steam turbine?

Control oil. Control oil is usually provided to the steam turbine system from the same lube oil console. The control oil is used to actuate valves for steam turbine control during start-up and shut-down.

What is the prime purpose of providing a lubricating oil pre heater in an emergency stand by Diesel Genset?

Its main function is to enable the formation of a film of oil between the moving parts, which reduces friction and wear.

What is the pressure of jacking oil pump?

around 300 bar
The jacking oil pumps deliver oil at around 300 bar to the individual bearings.

What device is used to stop a turbine when it exceeds its maximum rpm’s?

The mechanical shutoff valve was designed to cut off the flow of steam to the turbine at the maximum rpm and thereby prevent the turbine from accelerating to a dangerous speed.

How is oil pressure controlled?

The oil pressure is controlled by bearing tolerances within the engine and the pressure regulating valve assembly in the oil pump.

What is oil injection test?

1. n. [Well Workover and Intervention] A procedure conducted to establish the rate and pressure at which fluids can be pumped into the treatment target without fracturing the formation.

What can cause low oil pressure in the lube oil header of a diesel engine?

When oil viscosity is too low or high, it may be detected as a loss of pressure in the oil supply to the engine. Low viscosity can be the result of a variety of factors, such as fuel dilution, incorrect lubricant viscosity selection, or excessive temperatures due to overloading or a cooling system failure.

What are the two types of oil pumps?

There are two primary types of oil pump used in automotive wet-sump systems: The gear pump and the gear-rotor pump.

What is purpose of jacking?

A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. Jacks are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons).

What is a turning gear?

A jacking gear (also known as a turning gear) is a device placed on the main shaft of an engine or the rotor of a turbine. The jacking gear rotates the shaft or rotor and associated machinery (such as reduction gears and main turbines), to ensure uniform cool-down. Without turning, hogging or sagging can occur.

What happens to the oil pump when the turbine speeds up?

When the turbine speeds up to rated speed (the main pump exit oil pressure is higher than electric pump exit oil pressure), this oil pump is stopped using, using main oil pump instead to provide lubrication oil to conditioning and protection system of the entire unit.

How do you seal the end of a steam turbine?

Steam turbine end sealing is done by either carbon rings or metallic Labyrinth. In a steam turbine, if the main oil pump fails, what will happen?

What causes a compressor to stop working when oil pressure falls?

Many compressors have oil pumps to provide mechanical lubrication and will fail if the oil pressure falls because of a pump fault or oil shortage. Where an oil pump is used a cut-out, which will stop the compressor in the event of inadequate oil pressure, is provided.

How to use the auxiliary oil pump in the turbine?

Start the auxiliary oil pump (if provided) and circulate oil through the system. 2. Ensure that the oil temperature is 50°F to 70°F (10°C to 20°C) before operating the turbine. 3. Place all controls, trip mechanisms and other safety devices in their operative positions.