Cryogenic tank for storing liquefied gas.
The use of an optical source and guidance system to regulate pressure in cryogenic tanks addresses the complexity and cost issues of existing systems, offering efficient pressure management for hydrogen storage.
Patent Information
- Application Number
- FR2024000137
- Authority / Receiving Office
- FR · FR
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2025-07-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing pressure control systems in cryogenic tanks are complex, expensive, and poorly adapted for hydrogen storage, particularly in regulating pressure through heating.
A pressure regulating apparatus using an optical source, such as an infrared ray, controlled by a pressure sensor, which transfers optical radiation through a guidance system and diffuser to heat the tank contents, with an external source and a window for passage, or optionally using optical fibers, to manage pressure.
Provides a cost-effective and efficient method to regulate pressure in cryogenic tanks, particularly suitable for hydrogen storage, by optically heating the contents.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Title of the invention: Cryogenic tank for storing liquefied gas.
[0001] The present invention relates to a cryogenic tank for storing liquefied gas, for example with a double jacket, provided with an apparatus for regulating the pressure within the tank configured to allow the contents of the tank to be heated in order to increase the pressure therein.
[0002] It is known to control the pressure in a cryogenic tank by heating its contents in a controlled manner (pressure increase unit, "PBU").
[0003] The known solutions are complex, expensive or poorly adapted, for example, to hydrogen storage.
[0004] The present invention aims to effectively remedy these drawbacks by proposing a device in which the pressure regulating apparatus comprises an optical source, a guidance and / or collimation system configured to transfer optical radiation into the reservoir.
[0005] That is to say that the heating is carried out optically using, for example, infrared rays.
[0006] According to possible embodiments:
[0007] - the optical source is of the Infra-Red type,
[0008] - optical source is controlled by the pressure value measured by a sensor pressure in the tank,
[0009] - the regulating apparatus comprises an optical diffuser between the optical source and inside the tank,
[0010] - the source is located outside the tank, the regulating apparatus comprising a window configured to pass through the tank walls and a shutter.
[0011] The invention will be better understood upon reading the following description and examining the accompanying figures. These figures are given only for illustrative purposes but in no way limit the invention.
[0012] [Fig. 1] is a schematic and partial representation of an exemplary embodiment of a device according to the invention.
[0013] With reference to [Fig.l], the cryogenic tank 1 for storing liquefied gas is of the double-jacket type and is provided with a pressure regulating device within the tank. This device is configured to allow the contents of the tank 1 to be heated in order to increase the pressure therein.
[0014] The pressure regulating apparatus comprises an optical source 2, preferably infrared, and a guidance and / or collimation system 3 configured to transfer optical radiation in tank 1.
[0015] As shown schematically, the optical source 2 can be controlled (its power for example) by the pressure value measured by a pressure sensor 4 in the tank 1. That is to say that the quantity of heat introduced is a function of the desired pressure.
[0016] The regulating apparatus comprises an optical diffuser 7 between the optical source 2 and the interior of the tank 1.
[0017] As illustrated, the source 2 can be located outside the tank 1, the regulating apparatus then comprising a window 5 configured to allow passage through the walls of the tank and a shutter 6 (preferably mechanical and switchable to allow or not the passage of the optical flow).
[0018] Alternatively, the optical guidance may comprise or consist of optical fibers.
[0019] Similarly, the optical source 2 could be arranged in the tank 1.
Claims
Claims
1. Cryogenic tank (1) for storing liquefied gas, for example with a double jacket for storing liquefied hydrogen, provided with a pressure regulating device within the tank configured to allow the contents of the tank to be heated in order to increase the pressure therein, characterized in that the pressure regulating device comprises an optical source (2).
2. Tank (1) according to claim 1 comprising a guidance and / or collimation system (3) configured to transfer optical radiation from the source (2) into the tank (1).
3. Tank according to claim 1 or 2, characterized in that the optical source (2) is of the infrared type.
4. Tank according to any one of claims 1 to 3, characterized in that the optical source (2) is controlled by the pressure value measured by a pressure sensor (4) in the tank (1).
5. Tank according to any one of claims 1 to 4, characterized in that the regulating apparatus comprises an optical diffuser between the optical source (2) and the interior of the tank (1).
6. Tank according to any one of claims 1 to 5, characterized in that the source is located outside the tank (1), the regulating apparatus comprising a window (5) configured to pass through the walls of the tank and a shutter (6).