WO2024100724A1 - 端部配管の遮断方法、外気流入判定方法、及び配管設備 - Google Patents
端部配管の遮断方法、外気流入判定方法、及び配管設備 Download PDFInfo
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- WO2024100724A1 WO2024100724A1 PCT/JP2022/041415 JP2022041415W WO2024100724A1 WO 2024100724 A1 WO2024100724 A1 WO 2024100724A1 JP 2022041415 W JP2022041415 W JP 2022041415W WO 2024100724 A1 WO2024100724 A1 WO 2024100724A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
Definitions
- This disclosure relates to a method for shutting off an end pipe located at the end of a piping system, a method for determining outside air inflow, and the piping system.
- Patent Document 1 discloses piping equipment for a gas turbine power generation facility that uses natural gas as fuel.
- the present disclosure aims to provide a method for shutting off end pipes that can suppress contamination of the internal gas.
- a method for shutting off an end pipe involves dividing the inside of the end pipe, into which outside air can flow from the downstream end, with a downstream gate valve and an upstream gate valve, to form a downstream compartment located downstream of the downstream gate valve, an intermediate compartment located between the downstream gate valve and the upstream gate valve, and an upstream compartment located upstream of the upstream gate valve, and an intermediate gas, which is the same gas as the internal gas of the upstream compartment, is held in the intermediate compartment at a pressure higher than that of the outside air.
- This method can prevent internal gas contamination.
- FIG. 1 is a schematic diagram of the vicinity of an end portion of a piping installation according to a first embodiment.
- FIG. 2 is a flow diagram of the end pipe blocking method according to the first embodiment.
- FIG. 3 is a schematic diagram of the vicinity of an end portion of a piping installation according to the second embodiment.
- FIG. 1 is a schematic diagram of the vicinity of an end of the piping equipment 100 according to the first embodiment.
- the right side of the paper in FIG. 1 is the upstream side, and the left side of the paper is the downstream side. This is also the same as FIG. 3 described later.
- the inside of the piping equipment 100 is filled with an internal gas.
- the internal gas is a high-purity gas, such as hydrogen gas, natural gas, petroleum gas, ammonia gas, etc.
- the internal gas in this embodiment is hydrogen gas generated by vaporization of liquefied hydrogen, and the temperature of the internal gas is much lower than the outside air temperature. However, the internal gas may be at room temperature.
- the piping equipment 100 includes an end pipe 10, a downstream gate valve 20, an upstream gate valve 30, a downstream section pressure gauge 40, and an intermediate section pressure gauge 50. Below, these components will be described in order.
- the end pipe 10 is a pipe located at the downstream end of the pipe equipment 100.
- the end pipe 10 has a downstream end 11.
- the downstream end 11 is connected to other equipment depending on the situation, and internal gas is supplied to the other equipment via the downstream end 11.
- FIG. 1 shows a state in which the downstream end 11 is not connected to other equipment (disconnected state).
- a plug 12 is attached to the downstream end 11 of the end pipe 10.
- the plug 12 may not be attached to the downstream end 11, and the downstream end 11 may be open to the outside of the pipe equipment 100.
- the purity (concentration) of the internal gas will decrease, and the quality of the internal gas will deteriorate.
- the internal gas if the internal gas is flammable, the internal gas and the outside air will mix together to form an explosive atmosphere, which may ignite the internal gas and cause an explosion.
- the temperature of the internal gas is very low, the outside air will cool and solidify, which may have an adverse effect on the piping equipment 100 and other equipment connected to the piping equipment 100. For this reason, it is desirable to suppress contamination of the internal gas as much as possible.
- the downstream gate valve 20 is a valve provided in the end pipe 10.
- the downstream gate valve 20 may be configured to open and close automatically, or manually, or both.
- the downstream gate valve 20 is located near the downstream end 11 of the end pipe 10.
- the section located downstream of the downstream gate valve 20, i.e., the section located between the downstream end 11 and the downstream gate valve 20 is referred to as the "downstream section 91.”
- typical valves have a forward direction and a reverse direction due to their structure.
- fluid flowing in the forward direction is less likely to leak than fluid flowing in the reverse direction (i.e., fluid flowing in the forward direction is less likely to pass through the valve).
- the downstream gate valve 20 is provided in the end pipe 10 so that the direction toward the downstream is the forward direction. Therefore, when the downstream gate valve 20 is fully closed, gas located upstream of the downstream gate valve 20 is less likely to leak downstream of the downstream gate valve 20.
- the upstream gate valve 30 is a valve provided upstream of the downstream gate valve 20 of the end pipe 10.
- the upstream gate valve 30 may be configured to open and close automatically, or manually, or both.
- the section located between the downstream gate valve 20 and the upstream gate valve 30 is referred to as the "middle section 92.”
- the section located upstream of the upstream gate valve 30 is referred to as the "upstream section 93.”
- the upstream gate valve 30 is provided in the end pipe 10 so that the direction toward the upstream is the forward direction. Therefore, when the upstream gate valve 30 is in a fully closed state, gas located downstream of the upstream gate valve 30 is unlikely to leak upstream of the upstream gate valve 30.
- the downstream section pressure gauge 40 is a measuring device that measures the internal pressure of the downstream section 91.
- the downstream section pressure gauge 40 is provided between the downstream end 11 of the end pipe 10 and the downstream gate valve 20.
- the intermediate section pressure gauge 50 is a measuring device that measures the internal pressure of the intermediate section 92.
- the intermediate section pressure gauge 50 is provided between the downstream gate valve 20 and the upstream gate valve 30 of the end piping 10. This concludes the description of the configuration of the piping equipment 100 according to the first embodiment.
- Fig. 2 is a flow chart of the method for shutting off the end pipe 10 according to this embodiment.
- a low-temperature intermediate gas is first supplied to the area corresponding to the intermediate section 92 (step S1).
- the above-mentioned "intermediate gas” is the same gas as the internal gas.
- the intermediate gas is also hydrogen gas.
- "low temperature” is a temperature lower than the temperature outside the end pipe 10 (outside air temperature).
- the hydrogen gas, which is the internal gas is much lower than the outside air temperature. Therefore, by opening the upstream gate valve 30, a low-temperature intermediate gas can be supplied to the area corresponding to the intermediate section 92.
- a downstream section 91, an intermediate section 92, and an upstream section 93 are formed inside the end piping 10 (step S2).
- the sections 91, 92, and 93 can be formed by closing the downstream gate valve 20 and the upstream gate valve 30.
- the low-temperature intermediate gas is sealed in the intermediate section 92.
- steps S1 and S2 may be reversed. In other words, after forming the sections 91, 92, and 93, the low-temperature intermediate gas may be supplied to the area corresponding to the intermediate section 92.
- step S3 the pressure of the intermediate gas sealed in the intermediate section 92 is increased (step S3). Specifically, the temperature of the intermediate gas is increased by heat input from outside the end piping 10, and the intermediate gas is placed in a state of higher pressure than the outside air. In step S2, since the temperature of the intermediate gas sealed in the intermediate section 92 is lower than the temperature outside the end piping 10 (outside air temperature), the temperature of the intermediate gas is increased by natural heat input from outside the end piping 10.
- the portion of the end pipe 10 corresponding to the intermediate section 92 may be configured to transmit heat more easily than other portions.
- the portion corresponding to the intermediate section 92 may be made into a single-walled pipe.
- a heating device may be provided outside the end pipe 10, and heat may be input to the intermediate gas using the heating device.
- the intermediate gas which is the same gas as the internal gas in the upstream section 93, can be held in the intermediate section 92 at a pressure higher than the outside air.
- the intermediate gas is the same gas as the internal gas, contamination of the internal gas will not occur even if the intermediate gas in the intermediate section 92 mixes with the internal gas.
- the temperature of the intermediate gas which was at the same temperature as the internal gas, is raised by heat input from outside the end piping 10, thereby increasing the pressure of the intermediate gas. Therefore, the pressure of the intermediate gas in the intermediate section 92 is higher than the pressure of the internal gas in the upstream section 93. Therefore, in this embodiment, the internal gas in the upstream section 93 does not leak into the intermediate section 92, and it is possible to prevent the internal gas from leaking outside the end piping 10.
- the downstream gate valve 20 is provided in the end pipe 10 so that the direction toward the downstream is the forward direction. Therefore, the intermediate gas in the intermediate section 92 is unlikely to leak into the downstream section 91.
- the upstream gate valve 30 is provided in the end pipe 10 so that the direction toward the upstream is the forward direction. Therefore, the intermediate gas in the intermediate section 92 is unlikely to leak into the upstream section 93. Therefore, according to this embodiment, it is possible to suppress a decrease in the pressure of the intermediate gas in the intermediate section 92.
- step S3 the flow of outside air into the intermediate section 92 is monitored (step S4). Specifically, the internal pressures of the downstream section 91 and the intermediate section 92 are obtained from the downstream section pressure gauge 40 and the intermediate section pressure gauge 50, respectively. Then, the internal pressures of the downstream section 91 and the intermediate section 92 are compared, and if the internal pressure of the intermediate section 92 is higher than the internal pressure of the downstream section 91, it is determined that there is no possibility that outside air has flowed into the intermediate section 92.
- the piping equipment 100 may also be equipped with an alarm device that outputs an alarm signal when the internal pressure of the intermediate section 92 drops and the difference between the internal pressure of the intermediate section 92 and the internal pressure of the downstream section 91 falls below a specified value.
- a low-temperature intermediate gas is supplied to the area corresponding to the intermediate section 92, and the pressure of the intermediate gas is increased by heat input from outside the end pipe 10.
- a high-pressure intermediate gas may be supplied to the area corresponding to the intermediate section 92 from the beginning.
- high-pressure intermediate gas may be supplied from the downstream end 11 of the end pipe 10 to the area corresponding to the intermediate section 92, and then the downstream gate valve 20 may be closed.
- the intermediate gas is the same gas as the internal gas, and the pressure of the supplied intermediate gas is higher than the pressure of the outside air.
- the intermediate gas which is the same gas as the internal gas of the upstream section 93, can be held in the intermediate section 92 at a pressure higher than the outside air.
- Fig. 3 is a schematic diagram of the vicinity of an end portion of a piping equipment 200 according to the second embodiment.
- the piping equipment 200 according to the second embodiment is different in configuration from the piping equipment 100 according to the first embodiment in that it includes an auxiliary pipe 60 and a check valve 70. In other respects, it has basically the same configuration as the piping equipment 100 according to the first embodiment.
- the auxiliary pipe 60 in this embodiment is a pipe that connects the intermediate section 92 and the upstream section 93 of the end pipe 10.
- the check valve 70 is a valve provided in the auxiliary pipe 60.
- the check valve 70 is configured to allow the flow of fluid from the upstream section 93 to the intermediate section 92, while prohibiting the flow of fluid from the intermediate section 92 to the upstream section 93.
- the piping equipment 200 since the piping equipment 200 according to this embodiment is configured as described above, when the internal pressure of the intermediate section 92 becomes lower than the internal pressure of the upstream section 93, the internal gas flows into the intermediate section 92 from the upstream section 93. In other words, the intermediate section 92 is automatically replenished with intermediate gas. Therefore, when the pressure of the internal gas is higher than the pressure of the outside air, the intermediate gas can be maintained at a higher pressure than the outside air. As a result, outside air does not flow into the intermediate section 92, and contamination of the internal gas can be suppressed.
- the first item disclosed in this specification is a method for shutting off an end pipe in a piping facility including an end pipe having a downstream end through which outside air can flow, a downstream gate valve provided on the end pipe, and an upstream gate valve provided upstream of the downstream gate valve of the end pipe, wherein the inside of the end pipe is partitioned with the downstream gate valve and the upstream gate valve to form a downstream compartment located downstream of the downstream gate valve, an intermediate compartment located between the downstream gate valve and the upstream gate valve, and an upstream compartment located upstream of the upstream gate valve, and an intermediate gas, which is the same gas as the internal gas of the upstream compartment, is held in the intermediate compartment at a pressure higher than the outside air.
- the second item disclosed in this specification is a method for shutting off an end pipe described in the first item, in which the intermediate gas is held in the intermediate section at a pressure higher than that of the internal gas.
- This method can prevent the internal gas from leaking into the intermediate section, and therefore the internal gas from leaking outside the end piping.
- the third item disclosed in this specification is a method for shutting off an end pipe described in the first or second item, in which the intermediate gas is supplied to an area corresponding to the intermediate section at a temperature lower than that outside the end pipe, the temperature of the intermediate gas is increased by heat input from outside the end pipe, and the intermediate gas is held in the intermediate section at a pressure higher than that of the outside air.
- This method allows the intermediate gas in the intermediate section to be at a higher pressure than the outside air.
- the fourth item disclosed in this specification is a method for shutting off an end pipe described in the first or second item, in which the intermediate gas is supplied to an area corresponding to the intermediate section at a pressure higher than the outside air, and the intermediate gas is held in the intermediate section at a pressure higher than the outside air.
- This method also allows the intermediate gas in the intermediate section to be at a higher pressure than the outside air.
- the fifth item disclosed in this specification is an outside air inflow determination method in the end pipe shutoff method described in any one of items 1 to 4, which determines that there is a possibility that the outside air has flowed into the middle section when the internal pressure of the middle section decreases and the internal pressure of the middle section becomes the same as the internal pressure of the outer section.
- This method makes it easy to determine whether or not outside air may have flowed into the intermediate compartment.
- the sixth item disclosed in this specification is a piping system comprising an end pipe having a downstream end through which outside air can flow, a downstream gate valve provided in the end pipe, an upstream gate valve provided upstream of the downstream gate valve of the end pipe, a downstream compartment pressure gauge that measures the internal pressure of a downstream compartment located downstream of the downstream gate valve of the end pipe, and an intermediate compartment pressure gauge that measures the internal pressure of an intermediate compartment located between the downstream gate valve and the upstream gate valve of the end pipe.
- This configuration makes it possible to carry out the end pipe blocking method described in the first item, and also makes it easy to carry out the determination described in the fifth item.
- the seventh item disclosed in this specification is the piping equipment described in the sixth item, in which the downstream gate valve is provided on the end pipe so that the forward direction is toward the downstream, and the upstream gate valve is provided on the end pipe so that the forward direction is toward the upstream.
- This configuration makes it possible to prevent the pressure of the intermediate gas in the intermediate section from decreasing.
- the eighth item disclosed in this specification is a piping system comprising an end pipe having a downstream end into which outside air can flow, a downstream gate valve provided in the end pipe, an upstream gate valve provided in the end pipe upstream of the downstream gate valve, an auxiliary pipe connecting an intermediate compartment located between the downstream gate valve and the upstream gate valve in the end pipe and an upstream compartment located upstream of the upstream gate valve, and a check valve provided in the auxiliary pipe to allow flow from the upstream compartment to the intermediate compartment while prohibiting flow from the intermediate compartment to the upstream compartment.
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Abstract
Description
以下、本開示の第1実施形態を説明する。
はじめに、第1実施形態に係る配管設備100の構成について説明する。図1は、第1実施形態に係る配管設備100における端部付近の概略図である。なお、図1の紙面右側が上流側であり、紙面左側が下流側である。この点は、後述する図3も同じである。配管設備100の内部は内部気体で満たされている。内部気体は、高純度のガスであって、例えば、水素ガス、天然ガス、石油ガス、アンモニアガス等である。本実施形態の内部気体は、液化水素が気化して発生した水素ガスであって、内部気体の温度は外気温度よりもはるかに低い。ただし、内部気体は常温であってもよい。
次に、端部配管10の遮断方法について説明する。図2は、本実施形態に係る端部配管10の遮断方法のフロー図である。
上述した端部配管10の遮断方法では、中間区画92に相当するエリアに低温の中間気体を供給し、端部配管10の外部からの入熱によって中間気体の圧力を上昇させている。ただし、上述した端部配管10の遮断方法とは異なり、はじめから中間区画92に相当するエリアに高圧の中間気体を供給してもよい。
次に、本開示の第2実施形態を説明する。図3は、第2実施形態に係る配管設備200における端部付近の概略図である。図3に示すように、第2実施形態に係る配管設備200は、補助配管60と、逆止弁70とを備えている点で、第1実施形態に係る配管設備100と構成が異なる。それ以外の点は、第1実施形態に係る配管設備100と基本的に同じ構成を備えている。
本明細書で開示する第1の項目は、外気が流入しうる下流端を有する端部配管と、前記端部配管に設けられた下流仕切弁と、前記端部配管の前記下流仕切弁よりも上流に設けられた上流仕切弁と、を備えた配管設備における、端部配管の遮断方法であって、前記端部配管の内部を前記下流仕切弁及び前記上流仕切弁で仕切ることで、前記下流仕切弁よりも下流に位置する下流区画、前記下流仕切弁と前記上流仕切弁の間に位置する中間区画、及び、前記上流仕切弁よりも上流に位置する上流区画を形成し、前記上流区画の内部気体と同じ気体である中間気体を、前記外気よりも圧力が高い状態で、前記中間区画において保持する、端部配管の遮断方法である。
11 下流端
12 プラグ
20 下流仕切弁
30 上流仕切弁
40 下流区画圧力計
50 中間区画圧力計
60 補助配管
70 逆止弁
91 下流区画
92 中間区画
93 上流区画
100 配管設備
200 配管設備
Claims (8)
- 外気が流入しうる下流端を有する端部配管と、
前記端部配管に設けられた下流仕切弁と、
前記端部配管の前記下流仕切弁よりも上流に設けられた上流仕切弁と、を備えた配管設備における、端部配管の遮断方法であって、
前記端部配管の内部を前記下流仕切弁及び前記上流仕切弁で仕切ることで、前記下流仕切弁よりも下流に位置する下流区画、前記下流仕切弁と前記上流仕切弁の間に位置する中間区画、及び、前記上流仕切弁よりも上流に位置する上流区画を形成し、
前記上流区画の内部気体と同じ気体である中間気体を、前記外気よりも圧力が高い状態で、前記中間区画において保持する、端部配管の遮断方法。 - 前記中間気体を前記内部気体よりも圧力が高い状態で前記中間区画において保持する、請求項1に記載の端部配管の遮断方法。
- 前記中間気体を前記端部配管の外部よりも温度の低い状態で前記中間区画に相当するエリアに供給し、前記端部配管の外部からの入熱によって前記中間気体の温度を上昇させ、前記中間気体を前記外気よりも圧力が高い状態で前記中間区画において保持する、請求項1に記載の端部配管の遮断方法。
- 前記中間気体を前記外気よりも圧力が高い状態で前記中間区画に相当するエリアに供給し、前記中間気体を前記外気よりも圧力が高い状態で前記中間区画において保持する、請求項1に記載の端部配管の遮断方法。
- 請求項1に記載の端部配管の遮断方法において、前記中間区画の内部圧力が低下し、前記中間区画の内部圧力と前記外部区画の内部圧力とが同じになったとき、前記外気が前記中間区画に流入した可能性があると判定する、外気流入判定方法。
- 外気が流入しうる下流端を有する端部配管と、
前記端部配管に設けられた下流仕切弁と、
前記端部配管の前記下流仕切弁よりも上流に設けられた上流仕切弁と、
前記端部配管の前記下流仕切弁よりも下流に位置する下流区画の内部圧力を測定する下流区画圧力計と、
前記端部配管の前記下流仕切弁と前記上流仕切弁の間に位置する中間区画の内部圧力を測定する中間区画圧力計と、を備えている配管設備。 - 前記下流仕切弁は下流に向かう方向が順方向となるように前記端部配管に設けられており、前記上流仕切弁は上流に向かう方向が順方向となるように前記端部配管に設けられている、請求項6に記載の配管設備。
- 外気が流入しうる下流端を有する端部配管と、
前記端部配管に設けられた下流仕切弁と、
前記端部配管の前記下流仕切弁よりも上流に設けられた上流仕切弁と、
前記端部配管の前記下流仕切弁と前記上流仕切弁の間に位置する中間区画と前記上流仕切弁よりも上流に位置する上流区画とをつなぐ補助配管と、
前記補助配管に設けられ、前記上流区画から前記中間区画への流れを許容する一方、前記中間区画から前記上流区画への流れを禁止する逆止弁と、を備えている、配管設備。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/041415 WO2024100724A1 (ja) | 2022-11-07 | 2022-11-07 | 端部配管の遮断方法、外気流入判定方法、及び配管設備 |
| KR1020257014841A KR20250084176A (ko) | 2022-11-07 | 2022-11-07 | 단부 배관의 차단 방법, 외기 유입 판정 방법 및 배관 설비 |
| JP2024556852A JP7858068B2 (ja) | 2022-11-07 | 2022-11-07 | 端部配管の遮断方法、及び、外気流入判定方法 |
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| JP2016006336A (ja) * | 2014-06-20 | 2016-01-14 | 株式会社Ihi | 仕切弁用漏れ検知装置 |
| WO2016181650A1 (ja) * | 2015-05-11 | 2016-11-17 | 川崎重工業株式会社 | 液体水素を投棄する配管を備えた船舶 |
| WO2017010095A1 (ja) * | 2015-07-15 | 2017-01-19 | 川崎重工業株式会社 | 液化水素用ローディングアーム及び液化水素移送方法 |
| WO2022080376A1 (ja) * | 2020-10-14 | 2022-04-21 | 川崎重工業株式会社 | ガス検査方法及びガス検査設備 |
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| JP2013241054A (ja) * | 2012-05-18 | 2013-12-05 | Mitsubishi Heavy Ind Ltd | 船舶、ガス燃料供給設備、ガス燃料供給設備の運転方法 |
| JP2016006336A (ja) * | 2014-06-20 | 2016-01-14 | 株式会社Ihi | 仕切弁用漏れ検知装置 |
| WO2016181650A1 (ja) * | 2015-05-11 | 2016-11-17 | 川崎重工業株式会社 | 液体水素を投棄する配管を備えた船舶 |
| WO2017010095A1 (ja) * | 2015-07-15 | 2017-01-19 | 川崎重工業株式会社 | 液化水素用ローディングアーム及び液化水素移送方法 |
| WO2022080376A1 (ja) * | 2020-10-14 | 2022-04-21 | 川崎重工業株式会社 | ガス検査方法及びガス検査設備 |
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| JP7858068B2 (ja) | 2026-05-13 |
| KR20250084176A (ko) | 2025-06-10 |
| JPWO2024100724A1 (ja) | 2024-05-16 |
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