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Liquid nitrogen based firefighting and thermal insulation integrated vehicle-mounted liquid hydrogen storage tank integrated device

A liquid nitrogen storage tank and integrated device technology, applied in the direction of gas/liquid distribution and storage, fixed-capacity gas storage tanks, container structure geometry/arrangement/size, etc.

Active Publication Date: 2020-04-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with atmospheric liquid hydrogen storage tanks, this high-pressure liquid hydrogen storage tank has a higher hydrogen storage density, but the safety and cost issues are also more prominent

Method used

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  • Liquid nitrogen based firefighting and thermal insulation integrated vehicle-mounted liquid hydrogen storage tank integrated device
  • Liquid nitrogen based firefighting and thermal insulation integrated vehicle-mounted liquid hydrogen storage tank integrated device
  • Liquid nitrogen based firefighting and thermal insulation integrated vehicle-mounted liquid hydrogen storage tank integrated device

Examples

Experimental program
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Effect test

Embodiment 1

[0032] see figure 1 , the vehicle-mounted liquid hydrogen storage tank integration device based on liquid nitrogen in this embodiment, which integrates fire extinguishing and heat preservation, adopts an integrated series integration structure, including liquid hydrogen storage tank 01, liquid hydrogen storage tank valve cold screen box 02, liquid nitrogen storage tank 03 and anti-fire extinguishing device 04.

[0033] Among them, the liquid hydrogen storage tank 01 is provided with an inner tank body 11 , an outer tank body 12 and an adiabatic cold shield 13 sequentially from the inside to the outside. The inner tank body 11 includes a gas phase zone 14 and a liquid phase zone 15, the gas phase zone 14 contains gas phase hydrogen, and the liquid phase zone 15 contains liquid phase hydrogen. It is a vacuum multi-layer thermal insulation material 16, and a rib support frame 17 is used. A liquid hydrogen level gauge 18 and a pressure gauge 20 are installed in the inner tank bo...

Embodiment 2

[0043] see figure 2 The vehicle-mounted liquid hydrogen storage tank integration device based on liquid nitrogen in this embodiment, which integrates fire extinguishing and heat preservation, adopts a detachable series integration structure, adopts an independent and detachable liquid nitrogen storage tank 03, and the adiabatic cold storage tank 01 of the liquid hydrogen storage tank There is no communion between the screen 13 and the outer tank body 30 of the liquid nitrogen storage tank 03, but a vacuum valve is used between the outer tank body 12 of the liquid hydrogen storage tank 01 and the inner tank body 31 of the liquid nitrogen storage tank 03. The cold bridge 05 of the joint 50 is closely connected, and the configuration of other components is consistent with the above-mentioned embodiment 1, and will not be repeated here.

[0044] In this embodiment, the schematic diagram of the cross-sectional structure of the cold bridge 05 with the vacuum joint 50 is as follows ...

Embodiment 3

[0046] see Figure 5 , the vehicle-mounted liquid hydrogen storage tank integration device based on liquid nitrogen, which integrates fire extinguishing and heat preservation in this embodiment, adopts a concentric layered integrated structure, including four layers of tanks from the inside to the outside, and the inner tank 11 contains a gas phase zone 14 With the liquid phase area 15, between the inner tank body 11 and the outer tank body 12, vacuum multi-layer insulation 16 and ring-shaped rib support 17 are used, and the outer tank body 12 and the inner layer tank body 31 store liquid nitrogen, and set Point support 173, vacuum multi-layer insulation 16 and ring rib support 17 are also used between the inner tank body 31 and the outermost outer tank body 30; repeat.

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PUM

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Abstract

The invention discloses a liquid nitrogen based firefighting and thermal insulation integrated vehicle-mounted liquid hydrogen storage tank integrated device and belongs to the technical field of vehicle-mounted liquid hydrogen storage tanks. The device comprises a liquid hydrogen storage tank, a liquid nitrogen storage tank and a fire preventing and fighting device, wherein an outer layer tank body of the liquid nitrogen storage tank is connected with an inner layer tank body of the liquid nitrogen storage tank through a cold bridge, so that the outer layer tank body of the liquid hydrogen storage tank is at the temperature close to the temperature of liquid nitrogen, and radiation heat transfer between the inner tank body and the outer tank body of the liquid hydrogen storage tank is reduced to the maximum; in addition, the liquid nitrogen storage tank is connected with a fire preventing and fighting module; when a hydrogen leaking instrument monitors that the hydrogen concentrationof a vehicle-mounted airtight space exceeds the safety allowable value, the fire preventing and fighting module is provided with a self-pressurization bypass branch, rapidly atomizes liquid nitrogen in the liquid nitrogen storage tank and sprays the atomized liquid nitrogen to the airtight space through a pressurization vaporizer and atomizing spray gun, utilizes large expanding volume and high heat absorption of liquid nitrogen gasification to rapidly squeeze out hydrogen in the airtight space and cool hydrogen, so that the purposes of fire prevention and fighting of the vehicle-mounted liquid hydrogen storage tank are realized.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted liquid hydrogen storage tanks, in particular to an integrated device for vehicle-mounted liquid hydrogen storage tanks that integrates fire extinguishing and heat preservation based on liquid nitrogen. Background technique [0002] The transportation industry has always been the main growth pole of global energy consumption, so all major car companies are accelerating the development of new energy vehicles, such as pure electric vehicles, hybrid vehicles and fuel cell vehicles. Among them, hydrogen fuel cell vehicles have CO 2 The advantages of zero emission, high efficiency, long cruising range, short energy replenishment time, and wide source of fuel are gradually regarded as the general direction for the development of new energy vehicles in the future. [0003] It is conservatively estimated that by 2030, the number of hydrogen fuel cell vehicles in the market will reach one million, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/02F17C1/12F17C13/12F17C13/00F17C13/02
CPCF17C1/02F17C1/12F17C13/00F17C13/026F17C13/123F17C2201/0104F17C2201/054F17C2201/056F17C2203/0383F17C2250/032F17C2250/0631F17C2250/072Y02E60/32
Inventor 邱利民方松王凯植晓琴
Owner ZHEJIANG UNIV
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