Storage tank for a cryogenic liquid and method of re-filling same

一种低温液体、重新填充的技术，应用在容器填充方法、容器排放的方法、气体处理/储存目的等方向，能够解决不是同样有效等问题，达到小泄漏可能、降低制造成本、降低热泄漏的效果

Active Publication Date: 2008-05-28
WESTPORT POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of filling through such a tube is that when filling the storage tank, the incoming cryogenic liquid is not as effective at condensing vapors that may be in the cryogen space

Method used

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  • Storage tank for a cryogenic liquid and method of re-filling same
  • Storage tank for a cryogenic liquid and method of re-filling same
  • Storage tank for a cryogenic liquid and method of re-filling same

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] Referring to the schematic illustration of FIG. 1, a storage tank 100 includes an inner vessel 102 defining a cryogen space 104, an outer shell 106 surrounding the inner vessel 102, and a support structure 108 for keeping the inner vessel 102 separate from the outer shell 106, whereby the inner vessel 102 An insulating space 109 is defined between 102 and housing 106 .

[0033] The combined charge and exhaust assembly 110 includes a conduit 112 having a first end 112a having at least one opening disposed in an upper portion of the cryogen space and a second end 112b at the outer shell 106 and connect to jack 114. When filling a storage tank for cooling liquid, usually a portion of the cryogen space is left for vapor. Completely filling the cryogen space 104 with liquid will result in a very short hold time before the vapor is vented from the cryogen space 104 to reduce the vapor pressure. This is because even a small amount of heat leakage into the cryogen space 104 w...

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PUM

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Abstract

A storage tank defines a cryogen space for storing a cryogenic liquid. The storage tank comprises a combined fill and vent assembly, which comprises a conduit having a first end with an opening disposed within an upper part of the cryogen space, and a second end outside of the cryogen space that is connected to a receptacle, to which a re-filling nozzle can be attached. A check valve disposed in the conduit allows flow only in the direction of filling the cryogen space with cryogenic liquid from the receptacle. A by-pass line is provided around the check valve with a valve disposed in the by-pass line that is operable to open or close to control flow through the by-pass line. The method comprises attaching a re-filling nozzle to the receptacle and opening the by-pass valve to vent vapor from the cryogen space to reduce vapor pressure therein and to cool the conduit, receptacle, re-filling nozzle, and fill line. After venting the storage tank, the by-pass valve is closed, and the storage tank can be re-filled through the receptacle and conduit.

Description

technical field [0001] The present invention relates to a cryogenic liquid storage tank and a method of refilling the same. More specifically, the storage tank includes integral means for refilling and venting the cryogen space. Background technique [0002] Cryogenic liquids are liquefied gases that generally have a boiling point below -100°C (about -150°F) at atmospheric pressure. Examples of cryogenic liquids include liquid natural gas (LNG), nitrogen, oxygen, carbon dioxide, methane, and hydrogen. [0003] Cryogenic liquids are typically stored in insulated storage tanks comprising an inner storage vessel mounted within an outer shell, the insulation being provided by insulating material and a vacuum disposed in the space between the inner vessel and the outer shell. The inner vessel defines a cryogen space in which cryogenic liquid can be stored. Such an arrangement reduces heat transfer from the surrounding environment to the cryogenic liquid stored in the cryogen s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/12F16K24/04F17C13/04F17C5/02
CPCF17C2205/0332Y02E60/321F17C2203/0619F17C13/04F17C2221/013F17C2201/056F17C2205/0335F17C2221/011F17C2203/03F17C2225/044F17C2250/0626F17C2201/035F17C2227/0107F17C2270/0168F17C2223/0161F17C2250/0636F17C2201/0109F17C2205/0329F17C2260/021F17C2223/033F17C2250/043F17C2260/036F17C2223/046F17C1/12F17C2221/033F17C2221/012F17C2221/014F17C2205/0385Y02E60/32
Inventor G·C·哈珀R·马克
Owner WESTPORT POWER
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