Messer Griesheim Gmbh

Messer Griesheim Gmbh & Co.

Klaus Tocha

Roland Henneborn

Wolfgang Klein

The invention relates to a shut-off apparatus for the charging device of a pressure vessel, especially for the storage of cryogenic liquefied gases, having a shut-off valve with a valve housing and a valve body stressed by a closure spring which, in order to charge the pressure vessel, can be brought into the open position against the force of the closure spring, having an apparatus for locking the valve body in the open position of the valve and having a release apparatus subjected to the action of the vessel pressure, which causes the apparatus to release the lock if a predetermined threshold vessel pressure is exceeded. According to the invention, the vessel threshold pressure at which closure of the charging device takes place can be preset with considerably more accuracy in that the release apparatus possesses a cylinder ( ), a piston ( ) and a piston rod ( ), in that a medium-permeable annular gap is provided between piston ( ) and cylinder ( ), in that the piston rod ( ) acts on the apparatus to release the lock, in that the cylinder ( ) possesses an overflow valve ( ) on one side of the piston ( ) which opens when the threshold vessel pressure is reached, in that, when the overflow valve ( ) is open, the cylinder ( ) is in flow connection with the pressure vessel on one side of the piston ( ) and is in flow connection with a reference pressure volume, preferably the ambient atmosphere, on the other side of the piston.

Shut-off device for the filling device of a pressure tank

The invention relates to a coupling for connecting vacuum-insulated line ends (12, 13) via a coupling socket (11) and a coupling plug (10) which are provided for conveying a cryogenic medium and which have closing elements (28, 29) at the outer line ends that close the line ends. In order to ensure a simple replacement of the gaskets and improved safety during operation and in case of operating errors, the closing elements (28, 29) of both line ends (12, 13) are directly adjacent to the separation plane (27) of the coupling socket (11) and of the coupling plug (10).

Coupling for connecting two vacuum-insulated lines via a coupling socket

The invention relates to a coupling for connecting vacuum-insulated line ends via a coupling socket and a coupling plug which are provided for conveying a cryogenic medium and which have closing elements at the outer line ends that close the line ends. So that the valve-like means can be opened or closed by remote control in a defined manner, the coupling plug (10) has a control unit (43) that is connected to the closing element (29) and that opens at least the closing element (29) when exposed to control pressure.

Coupling for connecting vacuum-insulated line ends

A liquid counter having a rotor pivot operating in a stream of cryogenic medium includes a friction bearing for the rotor pivot loosely mounted in a housing while the liquid counter is operative but arrested in the housing both radially and axially.

Friction bearing for rotor pivot of liquid counter

An apparatus for controlling the pressure of a gas in a gas line includes a source of liquefied gas maintained at a prearranged gas pressure, an evaporation-inducing device connected to the source of liquefied gas and to the gas line, and a self-actuating valve disposed in the feed line for releasing a gas stream from the source of liquefied gas upon a predetermined pressure in the gas line falling below a prearranged pressure in the source of the liquefied gas, less a pressure loss in the feed line, so that the pressure in the gas line is substantially maintained at the predetermined pressure.

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Langenfeld, Germany

Klaus Tocha