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Summary of Contents for Flowserve GTS Series
- Page 1 Installation Instructions GTS Series Internally Mounted Steam Seal Experience In Motion...
- Page 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.
- Page 3 Check the turbine alignment. The shaft runout and the perpendicularity should meet normal pump standards. The concentricity may be much larger than that typically seen in a pump. The flange for internally mounted seals pilots on the turbine and requires a TIR < .020” for proper seal function. Talk to the operations and maintenance personnel regarding the above concerns.
- Page 4 Insulation of sufficient thickness should be installed on the piping to prevent excess radiation losses that result in condensate formation. Insulation should be dry, weatherproofed, and undamaged. If your steam piping system lacks one or more of these features you may experience more problems with water slugs entering the turbine and with condensate collecting in the turbine.
- Page 5 steam gets trapped in the line and prevents new condensate from actuating the trap. The condensate will back up into the turbine until the steam in the line condenses. If it is impossible to locate the steam trap near the turbine, use a trap that has a steam lock release valve.
- Page 6 Seal Chamber Requirements Figure 1 Turbine Bore F2 Groove Location F7 Groove Width Shaft Step to Box Face F3 Groove Location F8 Groove Depth Diameter Shaft Diameter F4 Groove Location First Obstruction Turbine Depth F5 Groove Location Groove Location F6 Groove Location Installation of Seal (Method 1) Remove the seal assemblies from the box.
- Page 7 Remove the spanner nuts 9 , retaining rings 54 , and drive collars 58 from the assemblies. Be careful not to dislodge the split rings 94 . Orient the seal so the drive collar end is facing away from the rotor. Carefully slide the seals onto the appropriate shaft diameter without the sleeve gaskets 19 and drive collars 58 .
- Page 8 screws evenly to insure uniform compression of the sleeve gasket. Rotate the rotor assembly to access screws below the split line. The #10-32 HHCS should be tightened to about 5.65 N-m (50 in-lbf). As a practical matter, this torque is frequently difficult to measure. Use the following guideline as an alternative.
- Page 9 Lower the rotor into the bottom half of the turbine case and onto the journal bearings. Make sure the seals are located in the correct groove in the turbine case. The thrust bearing should axially locate the rotor correctly in the case. Verify that the nozzle clearance meets the manufacturers specification.
- Page 10 This product is a precision sealing device. The design and dimension tolerances are critical to seal performance. Only parts supplied by Flowserve should be used to repair a seal. To order replacement parts, refer to the part code and B/M number.
- Page 11 Seal Nomenclature Figure 2 40-1 40-2 Description Description Drive Pin Gland Gasket Seat Gasket Sleeve Gasket Stationary Face Hex Head Cap Screw Rotating Face 40-1 Socket Head Cap Screw Rot Face Gasket 40-2 Socket Head Cap Screw Bellows Assy Retaining Ring Bellows Adapter Gasket Cup Point Set Screw Shaft Sleeve...
- Page 12 Flowserve Corporation has established industry leadership in the design and manufacture of its products. Telephone: 31 765 028 200 When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products Telefax: 31 765 028 487 might be used in numerous applications under a wide variety of industrial service conditions.