High-pressure steam generator feed water input arrangement

US3937184A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Gerhard Frei · Ohlsbach, DE
• Heinz Schroder · Düren, DE

Key dates

• Filing date: Dec 4, 1973
• Grant date: Feb 10, 1976
• Expiry date: Dec 4, 1993

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F22B1/025
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A high-pressure steam generator, particularly for use in a pressurized-water coolant nuclear reactor installation, has a feed water inlet connection provided with a flow choke, such as a flow restricting orifice, through which the normal flow of feed water can pass to the steam generator with little impedance. In the event the pipe line supplying the feed water to the input connection accidentally fails and opens to the atmosphere, the choke becomes effective to very substantially reduce the flow rate of the reversely flowing water through the connection, which then occurs under the high steam pressure of the steam generator. This reduces the forces on the generator's internal construction in the event of such an accident.