JP6812496B2 - バルブ用耐圧検査装置 - Google Patents
バルブ用耐圧検査装置 Download PDFInfo
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- JP6812496B2 JP6812496B2 JP2019096734A JP2019096734A JP6812496B2 JP 6812496 B2 JP6812496 B2 JP 6812496B2 JP 2019096734 A JP2019096734 A JP 2019096734A JP 2019096734 A JP2019096734 A JP 2019096734A JP 6812496 B2 JP6812496 B2 JP 6812496B2
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/224—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
-
- 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
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/184—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for valves
Description
これらのデメリットに加えて、この漏洩検出方法をバルブに適用する場合には、バルブは、その種類や、呼び圧力、呼び径などによって供試品としての形状や大きさが異なるために、これらの違いに対応するために大きめのセンサウォールが必要になる。しかし、センサウォールに比較して試験体が小さくなると、この試験体とセンサとの距離が開き過ぎて漏れを検知できなくなることがある。
図1においては、本発明のバルブ用耐圧検査装置の斜視図、図2は、図1の中央縦断面図を示している。本発明の耐圧検査装置は、被検査物である供試弁に水素を含む気体を封入し、この供試弁からの外部への水素の漏れを検出することで弁箱耐圧試験(耐圧検査)をおこなうために用いられる。
本実施形態においては、この滞留領域Rにおいて、3個の水素センサ22を略120°間隔で配置すると共に、下方に位置するフランジ部10の上方で且つグランド部材8に近接した高さで、更に3個の水素センサ22を略120°間隔で配置し、計6個の水素センサ22を用いている。
また、微小な漏れを検知するためには、1個の水素センサ22であると検出に時間を要することになる。
このように、前の供試弁1の抵抗値を利用して次の供試弁1の抵抗値を調整することで、測定した抵抗値を一旦リセットした後に次の抵抗値を測定する場合に比較して、抵抗値付近に達するまでの工程を省略して水素センサ22の基準電圧の設定にかかる時間を短縮できる。そのため、自動化したときの検査の能率を高めることができる。
なお、デジタル表示部44は任意部品であり、ユニット本体40に各水素センサ22の出力値を取り出したり、表示したりする機能を直接または間接的に設ければよい。
また、カバー20には、前述した排気ファン32が取付けられている。
本発明のバルブ用耐圧検査装置は、供試弁1を隔離状態で収容するカバー20と、このカバー20の内側に供試弁1外面の近接位置に移動可能な水素センサ22とを有し、この水素センサ22により供試弁1からの水素の外部漏れを検出しているため、耐圧検査時に、供試弁1をなすバルブの種類や、呼び圧力、呼び径などが異なって形状や大きさが変わる場合であっても、外部漏れの生じやすい部分に水素センサ22を確実に近接させて、漏れの発生やその発生位置を迅速に検出できる。この場合、サーボモータ23を角度調整して水素センサ22を供試弁1の外面に極限まで近接させることで、検出精度が向上すると共に検出時間も短縮する。水素センサ22を含む機械的な自動検出により外部漏れを確認しているため、熟練を要することなく耐圧検査装置を用いた耐圧検査設備60による簡易な構成で誤差を抑えつつ耐圧検査できる。後処理を要することもなく、耐圧検査の自動化により効率化を図って大量処理することが可能になって検査精度も向上する。
10 フランジ部
20 カバー
22 水素センサ
23 サーボモータ
24 治具
32 排気ファン
40 ユニット本体
42 デジタル・ポテンショメータ
43 マイコン
R 滞留領域
Claims (3)
- 供試弁を外気と一部を連通させて非密封状態で収容した筒状のカバーと、前記供試弁における部品同士の接合部外面又は装着部外面の外部漏れ位置に近接した状態で前記カバーの内部に配置されたサーチガス用のセンサとを備え、前記カバー内におけるサーチガスの流れを許容し、かつ前記供試弁の接合部外面又は装着部外面から漏れ出たサーチガスが検査時間内に拡散状態で前記センサに到達するように構成したことを特徴とするバルブ用耐圧検査装置。
- 前記カバーの下端側で外気に連通するようにした請求項1に記載のバルブ用耐圧検査装置。
- 前記カバーの下端を、下部側板と非密着状態として当該カバーの下端側で外気に連通させるようにした請求項1又は2に記載のバルブ用耐圧検査装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2016129882 | 2016-06-30 | ||
JP2016129882 | 2016-06-30 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2018525296A Division JP6533341B2 (ja) | 2016-06-30 | 2017-06-30 | バルブ用耐圧検査装置とその検査方法並びに水素ガス検出ユニット |
Publications (2)
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JP2019158893A JP2019158893A (ja) | 2019-09-19 |
JP6812496B2 true JP6812496B2 (ja) | 2021-01-13 |
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JP2018525296A Active JP6533341B2 (ja) | 2016-06-30 | 2017-06-30 | バルブ用耐圧検査装置とその検査方法並びに水素ガス検出ユニット |
JP2019096734A Active JP6812496B2 (ja) | 2016-06-30 | 2019-05-23 | バルブ用耐圧検査装置 |
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JP2018525296A Active JP6533341B2 (ja) | 2016-06-30 | 2017-06-30 | バルブ用耐圧検査装置とその検査方法並びに水素ガス検出ユニット |
Country Status (4)
Country | Link |
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US (1) | US11162914B2 (ja) |
JP (2) | JP6533341B2 (ja) |
CN (2) | CN109313100B (ja) |
WO (1) | WO2018003977A1 (ja) |
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CN110832296B (zh) * | 2017-06-30 | 2022-03-29 | 株式会社开滋 | 阀用阀座检查及耐压检查装置以及阀 |
DE112018006825T5 (de) * | 2018-01-11 | 2020-09-17 | Yamaha Fine Technologies Co., Ltd. | Gasleckerkennungsvorrichtung, Werkstückprüfvorrichtung und Leckprüfverfahren |
JP7209992B2 (ja) * | 2018-03-19 | 2023-01-23 | 伸和コントロールズ株式会社 | 三方弁装置のリークの有無を検査する検査装置及び検査方法 |
WO2020138425A1 (ja) * | 2018-12-27 | 2020-07-02 | 株式会社キッツ | サーチガスの混合方法 |
WO2020246592A1 (ja) * | 2019-06-07 | 2020-12-10 | 株式会社キッツ | バルブの耐圧検査装置 |
KR102278737B1 (ko) * | 2019-09-17 | 2021-07-20 | (주)보성 | 안전밸브 시험 장치 |
CN111272415B (zh) * | 2020-03-30 | 2021-11-16 | 四川省犍为峨山阀门有限责任公司 | 一种用于阀门的测试装置 |
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