DE1904319U - SECURITY AND OVERFLOW VALVE. - Google Patents

Description

633 883-9.9.ß

BROWN BOVERI / KRUPP

Safety or overflow valve

Reaktorbau GmbH ί

Mannheim, September 7, 1964 ' PD - Shm./Ro., Int. No. R 70 'ι

The innovation relates to a safety or overflow valve, \

which is to be used especially for nuclear reactors and therefore \

- in order to meet the very high requirements for tightness - '<

is completely welded. The systems that use such valves \

locked or secured, not only have to be in all of their \

Components are extremely tight, but it must also be guaranteed?

that in the event of danger, that which is in the system, under high pressure \

standing medium, which can be liquid, vaporous or gaseous in nature \

can be blown out of the system in a very short time. In addition I

it is necessary that the safety \

or overflow valves in the event of an impermissible pressure increase in the system \

address immediately, so that the medium enters the designated path |

tion can escape. \

The present innovation is based on the task of creating a safety f,

or overflow valve, in which a fast and |

safe opening of the valve is guaranteed. This task is f

according to the innovation 'solved in that the valve has an own |'

Has power-operated additional control. Advantageously, the I

Additional control consisting of a piston and a movable one with the piston |

connected flat seat, the space behind the piston with the ab- |

locking system via an opening with a narrow cross-section in opposite direction |

commitment. Due to this special training, the KoI [

In addition to the additional control, there are no high demands on tightness in the |

usual sense to be posed. · |

To ensure that the valve cone and the flat seat of the. |

Additional control under normal operating conditions with certainty \

are tightly closed, two are springs according to the innovation. \

provided, which have different spring forces and the valve I

Firmly press the cone or the flat seat on. A particular advantage of the \

present innovation is that for the security or \

Overflow valve only uses simple and conventional components I.

need to be so that the valve extremely operational \

for sure is. · \

The drawing shows an embodiment of the safety or \

The novelty represented overflow valve according schematic, and show \ Although \

Fig. 1 a safety valve with additional control in a closed!

Condition, %

FIG. 2 shows a detail of FIG. 1 on an enlarged scale. ?

In a line 1 (Fig. 1), which leads to a closed system | heard, there is a gaseous medium, for example. Line 1 \

\ is diverted by a safety valve 2 to another line 3 · .;

blocked, through which the gaseous medium is blown off in the event of danger \;

will. The medium then flows in the direction indicated by the arrows ί

Direction. The safety valve 2 has a valve cone 4 which |

an opening 5 between the two lines 1 and 3 completely |

tightly closed. Y / furthermore there is an I in the safety valve 2

Additional control is provided, which consists of a piston 6 and a flat |

seat 7 consists. Both are movable, connected to one another, namely f

carries a spindle 8 (FIG. 2) extending from the flat seat 7 |

its end a spherical training 9, which in a fork-like |

Extension 10 of a spindle 11 leading to the piston 6 is at rest. The }:

The spindle 11 simultaneously connects the piston 6 with the valve cone 4 · f The space 12 located behind the piston 6 stands through an opening 13s

of narrow cross-section with the line 3 and i ^m t so Abblasefall

5-1
k

also in connection with the closed system, special |

Leakproof requirements "therefore do not need to be applied to the piston 6

poses to be. To one above the flat seat 7 of the additional control |

lying space 14 leads from the line 1 a pipe 15 with I relatively narrow cross-section. The valve cone 4 is secured by a spring 16
pressed against its seat, and for pressing the flat seat 7 is
a spring 17 is provided. The two springs 16 and 17 have different spring forces, so that it is ensured that the valve cone 4

and the flat seat 7 close tightly. If the pressure t increases in line 1

of the gaseous medium reaches an impermissible value, the | opens

Safety valve and gives the medium through the opening 5 the way in? · ^;

line 3 free, via line 15 the flat seat 7 with the f

applies the same pressure and pushes, yielding to this pressure, |

the piston 6 downwards, the piston 6 on the valve cone 4 on |

acts and ensures a quick and safe opening of the cone. |

Protection claims: '|

Claims (3)

Protection claims: 1) Safety or overflow valve, preferably for core reactors, characterized in that the valve has an additional control operated by its own force shows. '' I. 2) safety or overflow valve according to claim 1, characterized in that the Additional control · of a piston as well as a movable one with The flat seat connected to the piston is formed, the space behind the piston with the system to be shut off via a Opening with a narrow cross-section is in communication. 3) safety or overflow valve according to claim 2, characterized in that der'Ventilkegel and the flat seat of the additional control each with a spring are pressed and that the springs have different spring forces.