Flowserve GTS Series - Manual (Page 2)

2
Introduction
The GTS steam turbine seal is especially designed for operation in steam turbine
applications. Successful operation relies on proper installation of the seal. These
installation guidelines will cover the basic steps required to install the seal as well
as additional factors to consider that will affect the installation. These steps are
based on a cross section of turbines seen in actual installations and will cover all
of the basics. There may be differences in your specific application.
A typical seal assembly is attached for reference purposes only. Refer to the
job drawing for details on the actual seal assembly dimensions, correct part
numbers, and the turbine configuration. The item numbers in the procedure refer
to the item numbers on this typical drawing. Item numbers may differ slightly on
the job assembly.
1 Tools
The GTS seal is designed around standard hardware with a minimum of tools
required for installation. These include:
Needle nose pliers
5/16 Open end wrench
7/64 and 5/32 “Allen” wrenches
Set of adjustable OD spanner wrenches
2 Inspection of Steam Turbine in Operation
If possible, observe the turbine operating with the carbon rings installed prior
to taking it out of service to install the GTS seals. Excessive steam leakage for
carbon rings could indicate a problem with the turbine that should be addressed
prior to seal installation
Investigate the following areas for excessive steam leakage:
2.1 Bad carbon rings or failed seal.
2.2 Cracked turbine case. Inspect the areas where steam leakage was present
for signs of erosion, corrosion, etc.
2.3 Split line of turbine case or cover. Check for warpage that prevents effective
sealing. Examine split line to see if steam leakage across the joint has
eroded the case and cover.
2.4 Shaft damage, especially in the area of the carbon rings. Check the
integrity of the overlay. It is possible for steam to leak beneath the overlay if
improperly applied.
The images of parts shown in these instructions may differ visually from the actual
parts due to manufacturing processes that do not affect the part function or quality.