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KR-102962907-B1 - A Portable Hydrogen Quality Analysis Device Capable of Maintaining Confidentiality and a Method of Maintaining confidentiality of a Portable Hydrogen Quality Analysis Device

KR102962907B1KR 102962907 B1KR102962907 B1KR 102962907B1KR-102962907-B1

Abstract

The present disclosure relates to a portable hydrogen quality analysis device capable of maintaining airtightness and a method for maintaining airtightness of the portable hydrogen quality analysis device. Since the interior of the hydrogen quality analysis device is sealed with a carrier gas to enable high-precision analysis and stable maintenance of the device's interior is possible, hydrogen quality analysis can be performed immediately upon installation at an external site.

Inventors

  • 이정순
  • 김상우
  • 박미연
  • 김동겸

Assignees

  • 한국표준과학연구원

Dates

Publication Date
20260512
Application Date
20231020

Claims (10)

  1. A first on/off valve that controls the supply of hydrogen gas supplied from a hydrogen gas supply unit; A second on/off valve that controls the supply of carrier gas supplied from a carrier gas supply unit; A path changing unit arranged to change the path of the carrier gas flowing in, in communication with the first on/off valve and the second on/off valve; A discharge unit connected to the above-mentioned path changing unit and discharging fluid flowing in from the above-mentioned path changing unit; A third on/off valve connected to the above discharge section to control the discharge of carrier gas discharged from the above discharge section or the inflow of external fluid from the outside; A portable hydrogen quality analysis device capable of maintaining confidentiality, comprising
  2. In paragraph 1, the path changing unit is, A first on/off valve communicating with the second on/off valve above A portable hydrogen quality analysis device capable of maintaining airtightness, comprising a first flow path changing valve that communicates with the first on/off valve and controls the flow of carrier gas supplied from the carrier gas supply unit.
  3. In paragraph 2, the above-mentioned path changing unit is, A second on/off valve arranged in communication with the first on/off valve above, A portable hydrogen quality analysis device capable of maintaining airtightness, comprising a second flow path changing valve that communicates with the second on/off valve and controls the flow of carrier gas supplied from the carrier gas supply unit.
  4. In paragraph 3, the above discharge part is, A first discharge port communicating with the above-mentioned first on/off valve and first flow path changing valve to discharge carrier gas, A portable hydrogen quality analysis device capable of maintaining airtightness, comprising a second discharge port that discharges carrier gas in communication with the second on/off valve and the second flow path changing valve.
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  6. This relates to a method for maintaining airtightness of a mobile hydrogen quality analyzer using a mobile hydrogen quality analyzer capable of maintaining airtightness, A first on/off valve shut-off step of blocking the supply of hydrogen gas supplied from a hydrogen gas supply unit by a first on/off valve; A second on/off valve opening step for opening the supply of carrier gas supplied from a carrier gas supply unit by means of a second on/off valve; A carrier gas inflow step in which the carrier gas supplied by the second on/off valve is introduced in communication with the first on/off valve and the second on/off valve by a path changing part arranged to change the path of the carrier gas supplied by the second on/off valve; A carrier gas discharge step in which a carrier gas flowing in from the path changing unit is connected to the above path changing unit and discharged by the discharge unit; A third on/off valve blocking step in which the discharge of carrier gas discharged from the discharge section is blocked by a third on/off valve in communication with the above-mentioned discharge section; A method for maintaining the airtightness of a mobile hydrogen quality analysis device, comprising
  7. In paragraph 6, the carrier gas inflow step is. A method for maintaining airtightness of a mobile hydrogen quality analysis device, comprising a first path changing step in which the flow of a carrier gas is changed by a first on/off valve communicating with the second on/off valve and a first flow path changing valve communicating with the first on/off valve and controlling the flow of a carrier gas supplied from the carrier gas supply unit.
  8. In paragraph 7, the carrier gas inflow step is, A method for maintaining airtightness of a mobile hydrogen quality analysis device, comprising a second path changing step in which the flow of a carrier gas is changed by a second on/off valve arranged in communication with the first on/off valve and a second flow path changing valve that controls the flow of a carrier gas supplied from the carrier gas supply unit in communication with the second on/off valve.
  9. In paragraph 8, the carrier gas discharge step is, A method for maintaining airtightness of a mobile hydrogen quality analysis device, wherein the carrier gas is discharged through a first discharge port communicating with the first on/off valve and the first flow path changing valve and through a second discharge port communicating with the second on/off valve and the second flow path changing valve.
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Description

A Portable Hydrogen Quality Analysis Device Capable of Maintaining Confidentiality and a Method of Maintaining Confidentiality of a Portable Hydrogen Quality Analysis Device The present disclosure relates to a portable hydrogen quality analysis device capable of internal sealing to maintain airtightness of the hydrogen quality analysis device, and a method for maintaining airtightness of the portable hydrogen quality analysis device. Hydrogen, a component of water commonly found in nature, is a sustainable energy resource that does not emit greenhouse gases as there is no risk of depletion. When hydrogen is used as fuel, water vapor is emitted instead of the exhaust gases produced by using fossil fuels. Due to these advantages of being a natural energy resource, the development of hydrogen fuel cell vehicles that use hydrogen as fuel is actively underway. Since hydrogen fuel cell vehicles require the supply of high-quality hydrogen of very high purity compared to gasoline, which is used as fuel in internal combustion engines, quality control of the hydrogen fuel is essential. Prior to this, Korean Patent Publication No. 10-2023-0045203 (April 4, 2023) discloses a hydrogen quality management system for a hydrogen station and a method thereof for maintaining the quality of hydrogen supplied to a hydrogen fuel cell. A conventional hydrogen quality management system comprises a first gas analyzer that primarily detects and analyzes impurities contained in hydrogen, a second gas analyzer that secondarily inspects the hydrogen analyzed by the first analyzer to secondarily detect and analyze impurities, and a first discharge pipe and a second discharge pipe that discharge hydrogen that does not meet hydrogen standards. By configuring the gas analyzer and discharge pipe, damage such as breakdowns in hydrogen fuel cell vehicles can be minimized by performing inspections of impurity components in the hydrogen. However, the hydrogen quality management system has a problem in that external air can enter through the discharge pipe through which the hydrogen is discharged and can also enter the interior of the gas analyzer. FIG. 1 is a conventional hydrogen quality analysis device FIG. 2 is a portable hydrogen quality analysis device capable of maintaining airtightness according to an embodiment of the present disclosure. FIG. 3 is a flowchart of a method for maintaining airtightness of a mobile hydrogen quality analysis device according to an embodiment of the present disclosure. FIG. 4 is a flowchart of the carrier gas inflow step of the method for maintaining airtightness of a mobile hydrogen quality analysis device according to an embodiment of the present disclosure. FIG. 5 is a method for maintaining airtightness of a mobile hydrogen quality analysis device according to the first embodiment of the present disclosure. FIG. 6 is a method for maintaining airtightness of a mobile hydrogen quality analysis device according to a second embodiment of the present disclosure. FIG. 7 is a method for maintaining airtightness of a mobile hydrogen quality analysis device according to a third embodiment of the present disclosure. The present disclosure will be described in detail below with reference to the attached drawings. However, this is merely illustrative and the present disclosure is not limited to the specific embodiments described illustratively. Unless otherwise defined, all technical and scientific terms have the same meaning as generally understood by one of the art to which the present invention pertains. Terms used for illustrative purposes in this disclosure are merely for effectively describing specific embodiments and are not intended to limit the present invention. Furthermore, the singular form used in the specification and the appended claims may be intended to include the plural form unless specifically indicated otherwise in the context. Additionally, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. The analysis results of a gas chromatography-based hydrogen quality analyzer vary depending on the degree of contamination inside the gas chromatography. Since the contamination inside the gas chromatography is mainly caused by air entering from outside the analyzer, the contamination is reduced by flushing the inside of the analyzer using a carrier gas such as helium. The flushing process takes at least one day depending on the degree of contamination. Figure 1 illustrates a conventional portable hydrogen quality analyzer. Referring to FIG. 1, a conventional hydrogen quality analysis device (100’) comprises a hydrogen gas supply unit (1’) for supplying hydrogen, a carrier gas supply unit (2’) for supplying carrier gas, a first valve (10’) and a first flow path changing valve (32’) for controlling the path of the hydrogen gas supplied by the hydrogen gas supply unit (1’