Turbine generator pressure relief diaphragm
A steam turbine is described comprising: (a) a turbine housing operable to receive steam and having a relief opening therein surrounded by a turbine flange; (b) a shaft positioned within the housing; (c) a plurality of rows of blades positioned along the longitudinal length of the shaft and extending radially outwardly therefrom; (d) a steam inlet pipe connected with the housing and operable as a conduit to allow the steam entering the housing to pass between the plurality of rows of blades to rotate the shaft; and (e) a pressure relief diaphragm associated with the turbine housing and operable to relieve excess pressure within the turbine housing, including: (i) a safety housing having a mounting flange thereon arranged to mate with the turbine flange so that the safety housing is positioned over the relief opening in the turbine housing; (ii) a first solid, frangible disc covering the relief opening in the turbine housing and having a peripheral portion interposed between the mounting flange on the safety housing and the turbine flange; (iii) a second solid disc positioned in the relief opening in the turbine flange in abutting contact with the first solid disc; (iv) first bolt means for securing the mounting flange on the safety housing to the turbine flange; (v) first spring washer means associated with the first bolt means for maintaining the positional relationship between the mounting flange on the safety housing and the turbine flange; (vi) an annular ring positioned on the first solid disc and above the relief opening in the turbine housing; (vii) second bolt means for securing the second solid disc and the annular ring to the first solid disc; and (viii) second spring washer means associated with the second bolt means for maintaining the positional relationship among the first solid disc, the second solid disc and the annular ring.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- Patent Number(s):
- US 5222862; A
- Application Number:
- PPN: US 7-923285
- OSTI ID:
- 6222470
- Resource Relation:
- Patent File Date: 31 Jul 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TURBOGENERATORS
PRESSURE REGULATORS
RELIEF VALVES
MECHANICAL SHAFTS
PRESSURE CONTROL
STEAM LINES
STEAM TURBINES
TURBINE BLADES
CONTROL
CONTROL EQUIPMENT
ELECTRIC GENERATORS
EQUIPMENT
FLOW REGULATORS
MACHINE PARTS
MACHINERY
SHAFTS
TURBINES
TURBOMACHINERY
VALVES
200104* - Fossil-Fueled Power Plants- Components