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AssigneeMesser Griesheim GmbH
InventorsFriedel Michel, Heinz Koser, Rainer Schmitt
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In a prior-art method to regulate the pressure inside a cryogenic tank containing cold gas when a main stream for a consumer is withdrawn, heated gas in the form of a heating gas secondary stream, which is regulated as a function of the tank pressure, is fed through the cryogenic tank via a pipe. In order to start on this basis and to provide a simple and safe operating method to regulate the main stream and the secondary stream while also providing a cost-efficient device for this purpose, it is proposed by the method according to the invention that the secondary stream and the main stream be fed to a pressure-control means equipped with a first adjustable throttle for the secondary stream and with a second adjustable throttle for the main stream, whereby the throttles are coupled to each other in such a way that they can be opened and closed in opposite directions as a function of the pressure in the tank. The device suitable for this purpose comprises a pressure-control means with which a gas stream in the form of a heating gas secondary stream, which is regulated as a function of the pressure in the tank, is conveyed through the pipe, whereby the pressure-control means is equipped with a first adjustable throttle to regulate the secondary stream and with a second adjustable throttle to regulate the main stream, and these throttles are coupled to each other in such a way that they can be opened and closed in opposite directions as a function of the pressure in the tank (FIG. 2).
In a method of regulating the pressure inside a cryogenic tank containing cold gas including withdrawing a main stream for a consumer, regulating a heated gas in the form of a heating gas secondary stream as a function of the tank pressure, and feeding the secondary stream through the cryogenic tank via a pipe, the improvement being in conveying the secondary stream and the main stream to a pressure regulator having a first adjustable throttle for the secondary stream and having a second adjustable throttle for the main stream, coupling the throttles to each other, and opening and closing the throttles in opposite directions as a function of the pressure in the tank.
In a device to regulate the pressure inside a cryogenic tank when at least one main stream for a consumer is withdrawn, said device having a thermally insulated reservoir to hold a cold gas that is connected to a withdrawal line that serves to withdraw a gas stream, said device having a device to heat up the gas stream, said device having a pipe that runs through the reservoir, and said device having a pressure regulator with which the gas stream in the form of a heating gas secondary stream is regulated as a function of the tank pressure and is fed through the cryogenic tank via said pipe, characterized in that the pressure regulator is equipped with a first adjustable throttle to regulate the secondary stream and with a second adjustable throttle to regulate the main stream, and said throttles are coupled to each other in such a way that they can be opened and closed in opposite directions as a function of the pressure in the tank.
Dependencies are inferred from the claim text.