Method for discharging waste gas from submarines without a signature
AssigneeHowaldtswerke-Deutsche Werft AG
InventorPeter Hauschildt
Life of this patent
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Abstract
The invention relates to a method and a device for discharging signature free exhaust gas from underwater vehicles, said exhaust gas being a by-product of the production of electric energy in energy converters and being directed by means of pressure into a pipe length through which outboard water is flowing. The thereby generated gas bubbles are reduced by means of static mixers arranged inside of the pipe length through which water is flowing, with the gas being dissolved by the high turbulence of the fluid. As the exhaust gas is dissolved inside of the underwater vehicle, no gas bubbles that might be located are produced outside the vehicle. Since the working pressure of the method equals the immersion pressure, but little energy is consumed.
Claims9
A method for discharging signature free exhaust gas from underwater vehicles, said exhaust gas being a by-product of the production of electric energy in energy converters, wherein said exhaust gas is directed by means of pressure into at least one pipe length (2) that is supplied, between an inlet (A) and an outlet (B), with outboard water (sea water) by way of a pump (4), the thereby generated gas bubbles being reduced by means of static mixers (3) arranged inside of the pipe length (2) through which water is flowing, with the gas being dissolved by the high turbulence of the fluid.
The method of one of the previous claims, wherein the pipe length (2) is supplied with outboard water (sea water) by the moving underwater vehicle, immersion pressure prevailing between the points A and B.
The method of one of the previous claims, wherein the flow velocity of the water inside the pipe length (2) amounts to 1-3 m/s.
The method of one of the previous claims, wherein the exhaust gas is introduced into the pipe length (2) at a pressure above the immersion pressure.
A device for discharging signature free exhaust gas from underwater vehicles, said exhaust gas being a by-product of the production of electric energy in energy converters, wherein at least one pipe length (2) is arranged in the underwater vehicle, said pipe length being provided with an inlet (A) for outboard water (sea water), an outlet (B) for the exhaust gas dissolved in the water, and an injection site (1) for the exhaust gas to be introduced into the pipe length (2), at least one static mixer (3) being provided inside of said pipe length.
The device of one of the previous claims, wherein the injection site (1) consists of a quadrant pipe with an injection lance and a porous body.
The device of one of the previous claims, wherein the length of the pipe (2) is such that it allows complete dissolution of the gas bubbles of the exhaust.
Dependencies are inferred from the claim text.