Nuclear reactor steam depressurization valve
This patent describes improvement in a nuclear reactor plant, an improved steam depressurization valve positioned intermediate along a steam discharge pipe for controlling the venting of steam pressure from the reactor through the pipe. The improvement comprises: a housing including a domed cover forming a chamber and having a partition plate dividing the chamber into a fluid pressure activation compartment and a steam flow control compartment, the valve housing being provided with an inlet connection and an outlet connection in the steam flow control compartment, and a fluid duct in communication with a source of fluid pressure for operating the valve; a valve set mounted within the fluid flow control compartment comprising a cylindrical section surrounding the inlet connection with one end adjoining the connection and having a radially projecting flange at the other end with a contoured extended valve sealing flange provided with an annular valve sealing member, and a valve cylinder traversing the partition plate and reciprocally movable within an opening in the partition plate with one terminal and extending into the fluid pressure activation compartment and the other terminal end extending into the steam flow control compartment coaxially aligned with the valve seat surrounding the inlet connection, the valve cylinder being surrounded by two bellow fluid seals and provided with guides to inhibit lateral movement, an end of the valve cylinder extending into the fluid flow control compartment having a radially projecting flange substantially conterminous with the valve seat flange and having a contoured surface facing and complimentary to the contoured valve seating surface whereby the two contoured valve surfaces can meet in matching relationship, thus providing a pressure actuated reciprocatable valve member for making closing contact with the valve seat and withdrawing therefrom for opening fluid flow through the valve.
- Assignee:
- General Electric Co., San Jose, CA (United States)
- Patent Number(s):
- US 5028383; A
- Application Number:
- PPN: US 7-509456
- OSTI ID:
- 5855684
- Resource Relation:
- Patent File Date: 16 Apr 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
NUCLEAR POWER PLANTS
STEAM LINES
REACTOR CONTROL SYSTEMS
DESIGN
DEPRESSURIZATION SYSTEMS
FLOW REGULATORS
FLUID FLOW
PRESSURE CONTROL
REACTOR COMPONENTS
SAFETY ENGINEERING
VALVES
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINEERING
EQUIPMENT
NUCLEAR FACILITIES
POWER PLANTS
THERMAL POWER PLANTS
220200* - Nuclear Reactor Technology- Components & Accessories
220400 - Nuclear Reactor Technology- Control Systems
420400 - Engineering- Heat Transfer & Fluid Flow