Valve arrangement
AssigneeLinde Aktiengesellschaft
InventorsAndré Biegner, Anton Wellenhofer
Life of this patent
Estimating the term…
Abstract
Valve arrangement for a system which is loaded with fluid, for connecting a first pressure region to a second pressure region by means of a first valve and a second valve connected in series. A third valve connects a region between the first valve and the second valves to a third pressure region. The first valve closes when a pressure which prevails on the side of the second pressure region is at least as high as a pressure which prevails on the side of the first pressure region. The first valve is coupled to the second valve so that the second valve closes when the first valve closes. The second valve is coupled to the third valve so that the third valve opens when the second valve closes.
Claims12
Valve arrangement for a system which is loaded with fluid, for connecting a first pressure region to a second pressure region by means of a first valve and a second valve which is connected in series thereto, a third valve connecting a region between the first valve and the second valve to a third pressure region;
- the first valve being set up such that the first valve closes when a pressure which prevails on a side of the second pressure region is at least as high as a pressure which prevails on a side of the first pressure region;
- the first valve being coupled to the second valve in such a way that the second valve closes when the first valve closes;
- the second valve being coupled to the third valve in such a way that the third valve opens when the second valve closes wherein the first valve is coupled via a switching apparatus to the second valve.
Method of preventing back-flow from a high-pressure region to a low-pressure region comprising:
- providing a valve arrangement that connects the low-pressure region to the high-pressure region by means of a first valve and a second valve connected in series, and having a third valve connecting a region between the first valve and the second valve to a third pressure region;
- closing the first valve when a pressure prevails on a side of the second pressure region that is at least as high as a pressure which prevails on a side of the first pressure region;
- coupling the first valve to the second valve so that the second valve closes when the first valve closes;
- and
- coupling the second valve to the third valve so that the third valve opens when the second valve closes
- wherein the first valve is coupled via a switching apparatus to the second valve.
Dependencies are inferred from the claim text.