What is gland steam blower?
Our gland steam condenser packages pull a slight vacuum on the turbine shaft seals by means of vacuum pumps, centrifugal blowers. 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.
What does a gland steam condenser do?
The gland steam condenser receives steam and noncondensable gases from the TGSS and condenses the steam. Air and non-condensable gases are evacuated from the gland steam condenser and discharged into the air vent system by exhaust fans.
What is gland steam system?
gland steam providing a seal between turbine shaft and turbine casing . so gland steam protect the leakage of steam outside of the turbine and also and suck the ambient air inside . In a turbine, rotor rotates inside the casing.
What is gland vent condenser?
Gland vent condensers are used for the condensation of gland vent steam and main steam after expansion in turbines. The gland vent condenser is provided with centrifugal blowers to force the air out after steam is condensed. These condensers are designed as per HEI standards and recommended good practices.
Why do you need a gland steam extractor?
The gland steam exhausters produce a slight vacuum in the gland steam condenser to remove air and noncondensable gases that carry over into the gland steam condenser with the leak-off steam from the shaft glands.
What is gland packing used for?
Gland packing is used extensively for the sealing and restriction of leakage of the working fluid along the stem in valves and along the shaft in the case of pumps and also for stationary duties like manhole cover sealing.
What is usual pressure of gland sealing steam?
With load building inside the turbine, HPT and IPT leakage will go to the gland steam supply header to increase the pressure, which will compel the supply valve to close. Normally the auxiliary steam header is maintained at a fixed pressure and temperature (at 10 or 16 kg/cm2 and ∼ 210°C).
What is gland in mechanical?
A gland is a general type of stuffing box, used to seal a rotating or reciprocating shaft against a fluid. The gland nut allows the packing material to be compressed to form a watertight seal and prevent water leaking up the shaft when the tap is turned on.
What is gland seal?
How does steam get out of the gland condenser?
The condenser is vented to the atmosphere via a blower. The small vacuum created by the blower is sufficient to draw air into the glands where it mixes with steam leaking from the cylinder; the air is separated in the gland condenser and passed back to the atmosphere via the vent fans.
How does the gland exhaust system work in a steam plant?
The gland exhaust system consists of low pressure piping connected to the gland area between the last two outer sets of labyrinths which receives and prevents steam from escaping to the atmosphere. This system collects the steam and directs it to a condenser for further use in the steam plant.
What is the function of a 7.3 gland steam condenser?
7.3 Gland steam condenser. The function of the gland steam condenser is to maintain a sub-atmospheric pressure at the outermost leak-off belt of the glands and thereby prevent the leakage of steam from the glands into the turbine hall, where it would condense on the walls and plant.
How does the gland sealing system work in a steam turbine?
The gland sealing system provides low pressure steam to the turbine gland in the final sets of labyrinth packing. This assists the labyrinth packing in sealing the turbine to prevent the entrance of air into the turbine, which would reduce or destroy the vacuum in the associated condenser.