JPWO2019211378A5 - - Google Patents
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- JPWO2019211378A5 JPWO2019211378A5 JP2020561672A JP2020561672A JPWO2019211378A5 JP WO2019211378 A5 JPWO2019211378 A5 JP WO2019211378A5 JP 2020561672 A JP2020561672 A JP 2020561672A JP 2020561672 A JP2020561672 A JP 2020561672A JP WO2019211378 A5 JPWO2019211378 A5 JP WO2019211378A5
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- gas
- gas inlet
- difference signal
- leak
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- 238000000034 method Methods 0.000 description 24
- 239000003507 refrigerant Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Description
本発明の方法により、リークを有するシステム(冷媒雲の漏洩元としてその近傍において冷媒濃度が最も高くなる)を適切に特定した後は、当該システムにおいてリークの位置特定をすることができる。これを行うために、前記バルブは試験ガス入口12がガス分析器16に接続されている測定ガス位置で保持されて、ガススイッチング調節を行わない、確立された連続位置特定モードに切り換えられる。
以下、本発明に含まれる態様を記す。
〔態様1〕嗅気型漏洩検出器(10)に対するガスリークの相対的方向を特定する方法であって、
前記嗅気型漏洩検出器(10)は、
スニッファプローブおよび試験ガス入口(12)を有するハンドピース(44)と、
前記ハンドピース(44)において前記試験ガス入口(12)から離れた位置に設けられた基準ガス入口(14)と、
ガス分析器(16)と、
切換バルブ(20)と、を備え、
前記切換バルブ(20)は、前記試験ガス入口(12)を介して吸引されたガスまたは基準ガス入口(14)を介して吸引されたガスが前記ガス分析器(16)により分析されるように、前記試験ガス入口(12)を前記ガス分析器(16)に、および前記基準ガス入口(14)を前記ガス分析器(16)にガス導通可能に交互に接続するように構成されており、
前記方法は、
a)前記試験ガス入口(12)を介して吸引されたガスを前記ガス分析器(16)に供給するステップと、
b)前記ガス分析器(16)に供給された前記ガス中の試験ガス濃度を測定するステップと、
c)前記切換バルブ(20)を切り換えるステップと、
d)前記基準ガス入口(14)を介して吸引されたガスを前記ガス分析器(16)に供給するステップと、
e)前記ガス分析器(16)に供給された前記ガス中の試験ガス濃度を分析するステップと、
f)前記ステップb)に従って測定された前記試験ガス濃度と前記ステップe)に従って測定された前記試験ガス濃度との差から差信号を生成するステップと、
g)前記ハンドピース(44)の空間的アライメントを変更するステップと、
h)前記ステップa)からf)を繰り返すステップと、
i)前記ステップf)による前記差信号と比較して、前記ステップh)後に前記差信号が変化したかを判断するステップと、を含む方法。
〔態様2〕態様1に記載の方法において、前記差信号の変化により、前記ハンドピース(44)のアライメントに対する位置特定対象のガスリークの相対方向を推定する、方法。
〔態様3〕態様1または2に記載の方法において、前記ステップg)の間、前記ハンドピース(44)の位置を変更しない、方法。
〔態様4〕態様1から3のいずれか一態様に記載の方法において、前記差信号が最小または最大となるまで前記ステップa)~i)を繰り返す、方法。
〔態様5〕態様1から4のいずれか一態様に記載の方法において、前記ステップa)と前記ステップd)との間で、前記スニッファプローブの空間的アライメントを変更しない、方法。
〔態様6〕態様1から5のいずれか一態様に記載の方法において、前記ステップa)~i)を行う間、前記ステップc)に従って前記切換バルブ(20)を、少なくとも1Hz、好ましくは約10Hz~100Hzの切換え頻度で切り換える、方法。
〔態様7〕態様1から6のいずれか一態様に記載の方法において、前記差信号が最大または最小であるとき、前記ハンドピース(44)のアライメントを、前記位置特定対象のリークの相対位置の指標として評価する、方法。
〔態様8〕態様1から7のいずれか一態様に記載の方法において、前記差信号が最大または最小であるとき、位置特定対象のリークが、前記試験ガス入口(12)および前記基準ガス入口(14)を通る幾何学的軸心上に位置していると推定する、方法。
〔態様9〕態様1から8のいずれか一態様に記載の方法において、前記差信号が実質的にゼロまたはゼロに等しいとき、位置特定対象のリークが、前記試験ガス入口(12)および前記基準ガス入口(14)を含む軸心に対して横方向にある幾何学的軸心上に位置していると推定する、方法。
〔態様10〕態様1から9のいずれか一態様に記載の方法において、前記嗅気型漏洩検出器の位置および前記位置の変化の一方または両方を、位置センサおよび加速度センサの一方または両方により検出し、前記リークの位置を特定する際に考慮する、方法。
〔態様11〕態様1から10のいずれか一態様に記載の方法において、前記ステップa)~i)の少なくとも1つを行う間、前記嗅気型漏洩検出器(10)の位置を検出し、前記位置の時間的経過を記録し、求められた前記差信号と相関させる、方法。
〔態様12〕態様1から11のいずれか一態様に記載の方法において、前記ステップa)~i)の少なくとも1つを行う間、前記嗅気型漏洩検出器(10)のユーザに対して、前記差信号および前記差信号の変化の一方または両方を表示する、方法。
According to the method of the present invention, after appropriately identifying a system having a leak (the refrigerant concentration is highest in the vicinity of the leak source of the refrigerant cloud), the position of the leak can be specified in the system. To do this, the valve is held at the measurement gas position where the test gas inlet 12 is connected to the gas analyzer 16 and is switched to an established continuous positioning mode without gas switching adjustment.
Hereinafter, aspects included in the present invention will be described.
[Aspect 1] A method for specifying a relative direction of a gas leak with respect to an odor type leak detector (10).
The olfactory type leak detector (10) is
A handpiece (44) with a sniffer probe and test gas inlet (12),
A reference gas inlet (14) provided at a position away from the test gas inlet (12) in the handpiece (44),
Gas analyzer (16) and
With a switching valve (20),
The switching valve (20) is such that the gas sucked through the test gas inlet (12) or the gas sucked through the reference gas inlet (14) is analyzed by the gas analyzer (16). , The test gas inlet (12) is configured to be alternately connected to the gas analyzer (16) and the reference gas inlet (14) to the gas analyzer (16) in a gas conductive manner.
The method is
a) A step of supplying the gas sucked through the test gas inlet (12) to the gas analyzer (16), and
b) A step of measuring the test gas concentration in the gas supplied to the gas analyzer (16), and
c) The step of switching the switching valve (20) and
d) A step of supplying the gas sucked through the reference gas inlet (14) to the gas analyzer (16), and
e) A step of analyzing the test gas concentration in the gas supplied to the gas analyzer (16), and
f) A step of generating a difference signal from the difference between the test gas concentration measured according to the step b) and the test gas concentration measured according to the step e).
g) The step of changing the spatial alignment of the handpiece (44) and
h) In the step of repeating steps a) to f),
i) A method including a step of determining whether or not the difference signal has changed after the step h) as compared with the difference signal according to the step f).
[Aspect 2] A method of estimating the relative direction of a gas leak to be positioned with respect to the alignment of the handpiece (44) by the change of the difference signal in the method according to the first aspect.
[Aspect 3] The method according to aspect 1 or 2, wherein the position of the handpiece (44) is not changed during the step g).
[Aspect 4] In the method according to any one of aspects 1 to 3, the method of repeating steps a) to i) until the difference signal becomes the minimum or maximum.
[Aspect 5] A method according to any one of aspects 1 to 4, wherein the spatial alignment of the sniffer probe is not changed between the step a) and the step d).
[Aspect 6] In the method according to any one of aspects 1 to 5, while performing the steps a) to i), the switching valve (20) is set to at least 1 Hz, preferably about 10 Hz according to the step c). A method of switching at a switching frequency of ~ 100 Hz.
[Aspect 7] In the method according to any one of aspects 1 to 6, when the difference signal is the maximum or the minimum, the alignment of the handpiece (44) is performed with respect to the relative position of the leak to be positioned. A method to evaluate as an index.
[Aspect 8] In the method according to any one of aspects 1 to 7, when the difference signal is the maximum or the minimum, the leak to be positioned is the test gas inlet (12) and the reference gas inlet (the reference gas inlet). A method of presuming to be located on a geometric axis passing through 14).
[Aspect 9] In the method according to any one of aspects 1 to 8, when the difference signal is substantially zero or equal to zero, the leak to be located is the test gas inlet (12) and the reference. A method of presuming to be located on a geometric axis lateral to the axis including the gas inlet (14).
[Aspect 10] In the method according to any one of aspects 1 to 9, the position of the olfactory leak detector and one or both of the changes in the position are detected by one or both of the position sensor and the acceleration sensor. And a method to be considered when locating the leak.
[Aspect 11] In the method according to any one of aspects 1 to 10, the position of the olfactory type leak detector (10) is detected while performing at least one of the steps a) to i). A method of recording the time course of the position and correlating it with the obtained difference signal.
[Aspect 12] In the method according to any one of aspects 1 to 11, while performing at least one of the steps a) to i), the user of the olfactory type leak detector (10) is referred to. A method of displaying one or both of the difference signal and the change in the difference signal.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018206877.1 | 2018-05-04 | ||
DE102018206877.1A DE102018206877A1 (en) | 2018-05-04 | 2018-05-04 | Method for determining the relative position of a gas leak |
PCT/EP2019/061245 WO2019211378A1 (en) | 2018-05-04 | 2019-05-02 | Method for determining the relative position of a gas leak |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2021524024A JP2021524024A (en) | 2021-09-09 |
JPWO2019211378A5 true JPWO2019211378A5 (en) | 2022-04-14 |
JP7434180B2 JP7434180B2 (en) | 2024-02-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2020561672A Active JP7434180B2 (en) | 2018-05-04 | 2019-05-02 | How to locate the relative location of a gas leak |
Country Status (8)
Country | Link |
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US (1) | US11441969B2 (en) |
EP (1) | EP3788340B1 (en) |
JP (1) | JP7434180B2 (en) |
CN (1) | CN112074720B (en) |
BR (1) | BR112020022202B1 (en) |
DE (1) | DE102018206877A1 (en) |
MX (1) | MX2020011037A (en) |
WO (1) | WO2019211378A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3567356B1 (en) * | 2018-05-07 | 2021-02-24 | Inficon GmbH | Sniffing leak detector with switching valve and buffer chamber |
DE102020210442A1 (en) * | 2020-08-17 | 2022-02-17 | Inficon Gmbh | Sniffer probe with bypass opening for a gas leak detector |
DE102021119834A1 (en) * | 2021-07-30 | 2023-02-02 | Binder Gmbh | Device for measuring the methane content of a gas |
DE102021126030A1 (en) | 2021-10-07 | 2023-04-13 | Inficon Gmbh | Automated leak detection method using a robotic sniffer leak detector |
CN116125007B (en) * | 2023-04-04 | 2023-08-25 | 云南碧翔物联网科技有限公司 | Automatic monitoring system and method for environmental pollutants |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10062126A1 (en) | 2000-12-13 | 2002-06-20 | Inficon Gmbh | Process for the detection of a gas with the aid of an infrared gas analyzer and a gas analyzer suitable for carrying out these processes |
DE10133567A1 (en) * | 2001-07-13 | 2003-01-30 | Inficon Gmbh | Sniffing leak detector and method for its operation |
DE202005011372U1 (en) | 2005-07-20 | 2006-11-30 | Inficon Gmbh | Sniffing leak detector |
DE102005043494A1 (en) | 2005-09-13 | 2007-03-15 | Inficon Gmbh | Leak detector with sniffer probe |
JP2007192748A (en) | 2006-01-20 | 2007-08-02 | Shimadzu Corp | Leak detector |
US20070240493A1 (en) | 2006-04-18 | 2007-10-18 | Shane Conlan | Sprayer-sniffer probe |
DE102008008262A1 (en) | 2008-02-08 | 2009-08-13 | Inficon Gmbh | Sniffer corner finder according to the reference measurement principle |
DE102013218506A1 (en) * | 2013-09-16 | 2015-03-19 | Inficon Gmbh | Sniffer leak detector with multi-stage diaphragm pump |
CN207066691U (en) * | 2016-09-09 | 2018-03-02 | 贵州电网有限责任公司电力科学研究院 | One kind quantitatively detects SF based on ultrasonic wave6The on-Line Monitor Device of gas leakage |
-
2018
- 2018-05-04 DE DE102018206877.1A patent/DE102018206877A1/en active Pending
-
2019
- 2019-05-02 JP JP2020561672A patent/JP7434180B2/en active Active
- 2019-05-02 EP EP19721615.3A patent/EP3788340B1/en active Active
- 2019-05-02 MX MX2020011037A patent/MX2020011037A/en unknown
- 2019-05-02 US US17/052,577 patent/US11441969B2/en active Active
- 2019-05-02 CN CN201980030372.XA patent/CN112074720B/en active Active
- 2019-05-02 BR BR112020022202-0A patent/BR112020022202B1/en active IP Right Grant
- 2019-05-02 WO PCT/EP2019/061245 patent/WO2019211378A1/en active Application Filing
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