What is the purpose of gland seal?
What is the purpose of gland seal?
The turbine gland sealing system (TGSS) prevents the escape of steam from the turbine shaft and casing penetrations and the glands of main steam stop and control valves. This system also prevents air leakage into the low pressure turbine glands.
What is the function of gland steam condenser?
Gland Steam Condenser captures the leaked steam and air mixture. Once collected, the steam is separated from the air and condensed water in a shell and tube condenser. The condensate drains out of the bottom while the air is pulled out of the top.
How does a gland seal work?
The packing is inside the gland nut and creates the seal. The shaft is wrapped by the packing and put in the gland nut. Through tightening it onto the stern tube, the packing is compressed, creating a seal against the shaft. Creating a proper plunger alignment is critical for correct flow and a long wear life.
What is gland ejector?
Ejectors are the most popular choice for Gland Seal Vacuum Systems for removing air and steam from steam turbine shaft seals. For larger turbines, it is usually advantageous to use a surface-type (shell-&-tube) pre-condenser to reduce load to the ejector; and, to recover heat by using condensate in the pre-condenser.
What is a gland packing seal?
Gland packing is a conventional shaft seal which is preferred by mechanical engineers. In Gland Packing, rope-like braided material is packed around the shaft. Thus, the gap between the pump and shaft gets filled with the packing material. The packing also requires frequent adjustment and lubrication.
What is packing seal?
Packing seal refers to a dynamic sealing device that generates a pressing force between the packing and the rotating and fixed parts through pre-tensioning or self-tightening of the medium pressure.
How does a steam condenser work?
Working of Steam Condenser The steam condenser receives exhaust steam from one end and gets in contact with the cooling water flowed within it form the cooling tower. As the low-pressure steam comes in contact with the cooling water, it condenses and turns into water.
Why condenser is used in power plant?
In thermal power plants, the purpose of a surface condenser is to condense the exhaust steam from a steam turbine to obtain maximum efficiency, and also to convert the turbine exhaust steam into pure water (referred to as steam condensate) so that it may be reused in the steam generator or boiler as boiler feed water.
What is gland packing?
The gland packing is a contact-type sealing element. Compared with other types of shaft seals, they are adjustable and suitable for use with pressures and circumferential speeds higher than those radial shaft seal rings are used for (see also Shaft seal).
What is gland seal water?
This gland seal water serves three important functions: it enables the pump shaft to rotate within its sleeve with minimum friction, it prevents the slurry from back-flowing into the seals and damaging the shaft, and. it allows for a small amount of cooling of the pump shaft, which heats up as it rotates at high speeds …
What is difference between gland and seal?
Gland packing is a conventional shaft seal which is preferred by mechanical engineers. In certain applications, gland packing is preferred over mechanical seals, e.g., dealing with aggressive fluids. If there is any leakage, then it can be adjusted while the pump is in service.