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JP2008190669A - Gas detector - Google Patents

Gas detector Download PDF

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Publication number
JP2008190669A
JP2008190669A JP2007027403A JP2007027403A JP2008190669A JP 2008190669 A JP2008190669 A JP 2008190669A JP 2007027403 A JP2007027403 A JP 2007027403A JP 2007027403 A JP2007027403 A JP 2007027403A JP 2008190669 A JP2008190669 A JP 2008190669A
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JP
Japan
Prior art keywords
valve
hydrogen
shape memory
memory alloy
locking body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2007027403A
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Japanese (ja)
Inventor
Akinobu Fujiwara
昭信 藤原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toki Corp
Original Assignee
Toki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toki Corp filed Critical Toki Corp
Priority to JP2007027403A priority Critical patent/JP2008190669A/en
Publication of JP2008190669A publication Critical patent/JP2008190669A/en
Pending legal-status Critical Current

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lift Valve (AREA)
  • Temperature-Responsive Valves (AREA)
  • Fuel Cell (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydrogen valve capable of quickly detecting a hydrogen leakage and closing a fluid passage without receiving an energy from the outside. <P>SOLUTION: This hydrogen valve comprises a platinum catalyst for promoting the combustion and heating of hydrogen, a shape memory alloy having a shape recovered by heating, a locking body operated by the shape memory recovering force of the shape memory alloy, and a valve element to which a bias spring biased in the direction that closes the valve and a member to be locked for limiting the operation of the valve by the locking body are linked. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は水素バルブに際し、漏洩が発生した際に即時漏洩を遮断することができる自動遮断水素バルブに関する。 The present invention relates to an automatic shut-off hydrogen valve that can shut off an immediate leak when a leak occurs.

近年の環境への影響より、あらゆる分野において燃料電池技術が着目されている。特に燃料電池で用いられる水素の取り扱いについては、その危険性から様々な検知手段が提案されている。 Due to recent environmental impacts, fuel cell technology has attracted attention in all fields. In particular, regarding the handling of hydrogen used in fuel cells, various detection means have been proposed due to its danger.

特開２００６−１８５５９５JP 2006-185595 A

しかしながら、従来の水素検知手段は別途エネルギ供給な場合が多く、さらにバルブに用いる際には水素検知手段へ供給するエネルギ、バルブを駆動するために供給するエネルギとが必要となり、システム全体が大型化したり、複雑化するおそれがあった。本発明の目的は、外部からのエネルギ供給を受けることなく、水素漏洩の際に迅速に検知し、流路を閉鎖することができる水素バルブを提供することである。 However, the conventional hydrogen detection means often supplies energy separately, and further, when used in a valve, energy supplied to the hydrogen detection means and energy supplied to drive the valve are required, which increases the size of the entire system. Or there was a risk of complications. An object of the present invention is to provide a hydrogen valve that can quickly detect a hydrogen leak and close a flow path without receiving external energy supply.

本発明の水素バルブは、水素を燃焼発熱を促進する白金触媒と、その発熱により形状回復する形状記憶合金と、形状記憶合金の形状記憶回復力により動作する係止体と、弁を閉鎖する方向に付勢されたバイアスばねと、前記係止体により弁の動作を制限する被係止部材とが連係された弁体とを備えることを特徴とする。 The hydrogen valve of the present invention is a platinum catalyst that promotes heat generation by burning hydrogen, a shape memory alloy that recovers shape by the heat generation, a locking body that operates by the shape memory recovery force of the shape memory alloy, and a direction in which the valve is closed And a biasing member biased by the engaging member, and a valve member linked with a member to be locked that restricts the operation of the valve by the engaging member.

本発明によれば、外部からのエネルギ供給を受けることなく、水素漏洩の際に迅速に検知し、流路を閉鎖することができる水素バルブを提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the hydrogen valve which can detect rapidly in the case of hydrogen leakage and can close a flow path without receiving the energy supply from the outside can be provided.

以下、本発明を図を用いて説明する。 Hereinafter, the present invention will be described with reference to the drawings.

図１は、本発明の水素バルブの外観を示す図である。
１０１はフレームアレスタである。フレームアレスタは金網状のＳＵＳで形成されている。
通常の吸気口であれば、水素雰囲気中においてバルブ内部で触媒燃焼が発生すると吸気口を通して火炎逸走が起こり、爆発事故が起こるおそれがある。ＳＵＳなど熱伝導性の高い素材でネットを形成されたフレームアレスタであればフレームアレスタにて火炎逸走が防止されるため必須となる。 FIG. 1 is a view showing the appearance of the hydrogen valve of the present invention.
Reference numeral 101 denotes a frame arrester. The frame arrester is made of wire mesh SUS.
In the case of a normal intake port, if catalytic combustion occurs inside the valve in a hydrogen atmosphere, flame escape may occur through the intake port and an explosion may occur. A flame arrester in which a net is formed of a material having high thermal conductivity such as SUS is essential because flame escape is prevented by the flame arrester.

図２は、本発明の水素バルブの流路解放状態を示す図である。
２０１は形状記憶合金線、２０２は形状記憶合金線を保護する保護チューブ、２０３は白金を含む触媒、２０４は係止体、２０５は弁口、２０６は弁口を開閉する弁体、２０７は弁体に連係された被係止体、２０８は弁体を弁口を閉鎖するように付勢するバイアスばねである。 FIG. 2 is a diagram illustrating a flow path open state of the hydrogen valve of the present invention.
201 is a shape memory alloy wire, 202 is a protective tube that protects the shape memory alloy wire, 203 is a catalyst containing platinum, 204 is a locking body, 205 is a valve port, 206 is a valve body that opens and closes the valve port, and 207 is a valve A locked body 208, which is linked to the body, is a bias spring that urges the valve body to close the valve opening.

本実施例の水素バルブの通常状態は、バイアスばね２０８により弁体２０６が弁口２０５を閉鎖する方向に付勢されているが、係止体２０４が被係止体２０７をロックし、弁口２０５が解放状態とされている。よって通常状態では水素が流入口から弁口を経由し流出口へと流れ出る。 In the normal state of the hydrogen valve of this embodiment, the valve body 206 is urged by the bias spring 208 in the direction to close the valve port 205, but the locking body 204 locks the locked body 207, and the valve port 205 is in a released state. Therefore, in a normal state, hydrogen flows out from the inlet through the valve port to the outlet.

図３は、本発明の水素バルブの流路閉鎖状態を示す図である。
水素漏洩が発生した場合、触媒２０３の周辺において水素が触媒燃焼を起こし発熱する。ここで発生した熱が形状記憶合金線２０１を加熱する。加熱された形状記憶合金線２０１は、形状回復力を発生し、係止体２０４を被係止体２０７から解放するよう動作する。被係止体２０７がロックから解放されると、バイアスばね２０８の弾性エネルギにより、弁体２０６が弁口２０５を閉鎖するように動作する。 FIG. 3 is a view showing a flow path closed state of the hydrogen valve of the present invention.
When hydrogen leakage occurs, hydrogen causes catalytic combustion around the catalyst 203 and generates heat. The heat generated here heats the shape memory alloy wire 201. The heated shape memory alloy wire 201 operates to generate a shape recovery force and release the locking body 204 from the locked body 207. When the locked body 207 is released from the lock, the valve body 206 operates to close the valve port 205 by the elastic energy of the bias spring 208.

このように、弾性エネルギを閉鎖方向に動作するように使用し、形状記憶合金の形状回復力を弾性エネルギを解放するトリガ手段として用いることにより、強力な弁閉鎖圧と安定した動作を得ることができる。 Thus, by using the elastic energy to move in the closing direction and using the shape recovery force of the shape memory alloy as a trigger means for releasing the elastic energy, a strong valve closing pressure and a stable operation can be obtained. it can.

本発明の水素バルブは、水素の漏洩を検知すると、別途外部の制御手段やエネルギ供給手段を用いることなく単独でバルブの遮断を行うことができ、燃料電池などへの利用が非常に有用である。 When the hydrogen valve of the present invention detects hydrogen leakage, the valve can be shut off independently without using a separate external control means or energy supply means, which is very useful for fuel cells and the like. .

本発明の水素バルブの外観を示す図である。It is a figure which shows the external appearance of the hydrogen valve of this invention. 本発明の水素バルブの弁解放状態を示す内部図である。It is an internal view which shows the valve release state of the hydrogen valve of this invention. 本発明の水素バルブの弁閉鎖状態を示す内部図である。It is an internal view which shows the valve closing state of the hydrogen valve of this invention.

符号の説明Explanation of symbols

１０１ フレームアレスタ
２０１ 形状記憶合金線
２０３ 白金触媒
２０４ 係止体
２０５ 弁口
２０６ 弁体
２０７ 被係止体
２０８ バイアスばね 101 Frame Arrester 201 Shape Memory Alloy Wire 203 Platinum Catalyst 204 Locking Body 205 Valve Port 206 Valve Body 207 Locked Body 208 Bias Spring

Claims (1)

白金触媒と、その発熱により形状回復する形状記憶合金と、形状記憶合金の形状記憶回復力により動作する係止体と、弁を閉鎖する方向に付勢されたバイアスばねと、前記係止体により弁の動作を制限する被係止部材とが連係された弁体とを内部に収容し、周囲の気体の流出入が可能なフレームアレスタを有する水素バルブ。 A platinum catalyst, a shape memory alloy that recovers its shape by its heat generation, a locking body that operates by the shape memory recovery force of the shape memory alloy, a bias spring that is biased in the direction of closing the valve, and the locking body A hydrogen valve having a frame arrester that accommodates a valve body linked with a locked member that restricts the operation of the valve and allows the surrounding gas to flow in and out.
JP2007027403A 2007-02-06 2007-02-06 Gas detector Pending JP2008190669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007027403A JP2008190669A (en) 2007-02-06 2007-02-06 Gas detector

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Application Number Priority Date Filing Date Title
JP2007027403A JP2008190669A (en) 2007-02-06 2007-02-06 Gas detector

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JP2008190669A true JP2008190669A (en) 2008-08-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015029838A1 (en) * 2013-09-01 2015-03-05 Kawamura Takao Hydrogen-rich gas mixture breathing system
KR101742194B1 (en) * 2015-07-21 2017-05-31 동아대학교 산학협력단 T-type gate valve for frost protection

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015029838A1 (en) * 2013-09-01 2015-03-05 Kawamura Takao Hydrogen-rich gas mixture breathing system
JP2015047323A (en) * 2013-09-01 2015-03-16 河村 隆夫 High concentration hydrogen-mixed gas respiratory system
CN105163788A (en) * 2013-09-01 2015-12-16 河村隆夫 High concentration hydrogen mixed gas breathing system
US9522250B2 (en) 2013-09-01 2016-12-20 Takao Kawamura Hydrogen-rich gas mixture breathing system
CN105163788B (en) * 2013-09-01 2017-03-08 河村隆夫 High concentration hydrogen mixed gas breathing system
KR101742194B1 (en) * 2015-07-21 2017-05-31 동아대학교 산학협력단 T-type gate valve for frost protection

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