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Systems and methods for increasing the heating efficiency of cryogenic fluid flowing through a conduit

A technology of cryogenic fluid and fluid conduit, applied in container discharge method, fluid transfer, fluid handling, etc., can solve the problem of heater increasing the cost and weight of launch vehicle

Active Publication Date: 2022-01-14
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

increasing the number of heaters increases the cost and weight of the launch vehicle

Method used

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  • Systems and methods for increasing the heating efficiency of cryogenic fluid flowing through a conduit
  • Systems and methods for increasing the heating efficiency of cryogenic fluid flowing through a conduit
  • Systems and methods for increasing the heating efficiency of cryogenic fluid flowing through a conduit

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Experimental program
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Embodiment approach

[0094] Clause 1. A system for heating a cryogenic fluid comprising:

[0095] a fluid conduit having an upstream end of the conduit and a downstream end of the conduit, the upstream end of the conduit being fluidly connected to a source of cryogenic fluid for receiving cryogenic fluid flowing through the fluid conduit in a downstream direction toward the downstream end of the conduit;

[0096] a heating mechanism located on a downstream portion of the fluid conduit and configured to heat the cryogenic fluid resulting in converting a portion of the cryogenic fluid into a buoyant flow flowing in an upstream direction;

[0097] an upstream valve mounted to the fluid conduit at a location upstream of the heating mechanism and operable to control an upstream valve mass flow rate of cryogenic fluid comprising an upstream valve mass flow rate of cryogenic fluid flowing through the upstream valve in a downstream direction. buoyancy mass flow rate minus the upstream valve buoyancy mass ...

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PUM

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Abstract

The present invention relates to systems and methods for increasing the heating efficiency of cryogenic fluid flowing through a conduit. A system for increasing heating efficiency of cryogenic fluid flowing in a downstream direction through a fluid conduit includes a heating mechanism, an upstream valve, a downstream valve, and a controller. A heating mechanism heats the cryogenic fluid, which results in converting a portion of the cryogenic fluid into a buoyant flow moving in an upstream direction. An upstream valve is located upstream of the heating mechanism and controls the upstream valve mass flow rate of the cryogenic fluid. A downstream valve is located downstream of the heating mechanism and controls the downstream valve mass flow rate of the cryogenic fluid. The controller adjusts the upstream valve to a choke position where: the upstream valve non-buoyancy mass flow rate substantially matches the downstream valve mass flow rate, and the upstream valve at least partially blocks buoyant flow through the upstream valve in an upstream direction.

Description

technical field [0001] The present disclosure relates generally to cryogenic fluids, and more particularly to systems and methods for increasing the heating efficiency of cryogenic fluids flowing through conduits. Background technique [0002] Certain applications require the fluid flowing through the conduit to be heated before the fluid flows into components at the downstream end of the conduit. For example, a space launch vehicle with a liquid propellant rocket engine requires a cryogenic oxidizer (e.g., liquid oxygen-LOX) and cryogenic fuel (e.g., liquid hydrogen-LH 2 ) is heated immediately before entering the engine section to ensure the quality of ignition and combustion during engine start. Heating the cryogenic propellant is complicated by the fact that the cryogenic propellant storage tank is located above the engine. For example, LOX may flow down a relatively large diameter conduit from a LOX storage tank located a significant distance above the engine (eg, up ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/44F02K9/58F02K9/60
CPCF02K9/44F02K9/58F02K9/60F05D2260/221F17C9/00F17C2201/0109F17C2201/054F17C2205/013F17C2205/0326F17C2221/011F17C2221/012F17C2221/08F17C2223/013F17C2223/0161F17C2223/033F17C2225/0123F17C2225/033F17C2227/0121F17C2227/0304F17C2227/039F17C2250/0443F17C2265/066F17C2270/0197Y02E60/32F17C13/001F17C13/04F17C2221/033F17C2225/013F17C2227/0311F17C2227/0334F17C2250/032F17C2250/0439F17C2260/02
Inventor K·斯温森B·维尼曼
Owner THE BOEING CO