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Cryogenic liquid storage tank with porous medium

A porous medium, low temperature liquid technology, used in gas/liquid distribution and storage, fixed-capacity gas storage tanks, outer walls of container structures, etc. problem, to achieve the effect of large contact thermal resistance, simple implementation method and slowing down the formation rate

Active Publication Date: 2017-07-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, the fins will increase the extra mass of the storage tank and reduce the capacity of the storage tank; on the other hand, it will also increase the heat leakage between the storage tank and the environment, which has obvious disadvantages

Method used

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  • Cryogenic liquid storage tank with porous medium
  • Cryogenic liquid storage tank with porous medium
  • Cryogenic liquid storage tank with porous medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1~3 As shown, the prior art cryogenic liquid storage tank has a ribbed structure and a structure with a built-in rotating stirrer to reduce the cryogenic liquid storage tank and eliminate the thermal stratification of the cryogenic liquid.

[0031] figure 1 The cryogenic liquid storage tank includes a cryogenic storage tank body 1 and a filled cryogenic liquid 3. figure 2 In the low-temperature storage tank body 1 is provided with fins 4. image 3 In the low-temperature storage tank body 1 is provided with a rotary agitator 5.

[0032] Such as Figure 4 As shown, the cryogenic liquid storage tank of this embodiment includes: a cryogenic storage tank body 1, a filled cryogenic liquid 3, and a porous medium filler 2.

[0033] In this embodiment, the low-temperature storage tank body 1 is composed of upper and lower elliptical heads and cylindrical cylinders, and the porous medium filler 2 is only arranged in the cryogenic liquid 3, regardless of the head part and...

Embodiment 2

[0037] This embodiment is the same as Embodiment 1 except for the structure of the porous medium filler 2.

[0038] Such as Figure 5 with 6 As shown, the porous medium filler 2 of this embodiment adopts a metal copper wire mesh with a diameter of 0.1 mm, a 20 mesh, and a porosity of 0.94, which is arranged on the inner wall of the low-temperature storage tank 1 in a ring shape.

[0039] The number of porous media filler 2 attached to the wall of the annular structure is 100 pieces, and the ratio of the total thickness of the wire mesh to the diameter of the low temperature storage tank is 1:25.

Embodiment 3

[0041] This embodiment is the same as Embodiment 1 except for the structure of the porous medium filler 2.

[0042] Such as Figure 7 As shown, the porous medium filler 2 of this embodiment uses a common commercially available copper wire mesh with a diameter of 0.1 mm, 20 mesh, and a porosity of 0.94. Metal copper wire mesh is evenly filled with cryogenic liquid 3.

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Abstract

The invention discloses a cryogenic liquid storage tank with a porous medium. The cryogenic liquid storage tank comprises a cryogenic liquid storage tank body used for storing cryogenic liquid, and porous medium filler covering the cryogenic liquid is arranged inside the cryogenic liquid storage tank body. According to the cryogenic liquid storage tank with the porous medium, the thermal contact resistance between the porous medium and the wall surface is large, and the influence of environment heat leakage is reduced; the heat transfer of the liquid in the tank is accelerated, and the formation speed of the thermal stratification is slowed down; and the overall weight is small, and the influence on the capacity is small.

Description

Technical field [0001] The invention relates to the technical field of cryogenic liquid storage, in particular to a cryogenic liquid storage tank with a porous medium. Background technique [0002] During the tank storage and transportation of cryogenic liquids and cryogenic fuels, due to the inevitable environmental heat leakage, cryogenic liquids (liquid helium, liquid hydrogen, liquid neon, liquid nitrogen, liquid oxygen, liquefied Natural gas, etc.) is first heated and the temperature rises. The hot fluid flows upward under the action of buoyancy, causing uneven temperature distribution of the fluid in the tank, and thermal stratification. In the thermal fluid position close to the gas-liquid interface, the liquid vaporization at the interface intensifies, and the pressure in the tank rises, causing major safety hazards to the tank. Especially for ground storage and transportation of low-temperature fuel, and fuel storage during satellite launch and orbiting operations, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C3/06
CPCF17C3/06F17C2203/0304F17C2203/0345
Inventor 植晓琴周霞邱利民
Owner ZHEJIANG UNIV
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