JP3117837B2 - Gas leak detection method - Google Patents
Gas leak detection methodInfo
- Publication number
- JP3117837B2 JP3117837B2 JP05052253A JP5225393A JP3117837B2 JP 3117837 B2 JP3117837 B2 JP 3117837B2 JP 05052253 A JP05052253 A JP 05052253A JP 5225393 A JP5225393 A JP 5225393A JP 3117837 B2 JP3117837 B2 JP 3117837B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- flow rate
- supply pressure
- leak
- gas leak
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measuring Volume Flow (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、一般家庭においてガス
漏れを検出するための方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting gas leaks in ordinary households.
【０００２】[0002]
【従来の技術】一般家庭におけるガス漏れ検出方法とし
ては、ａ．漏れたガスをガス漏れ検知器で検出する方
法、ｂ．異常に多量のガス流量をガスメータで検出した
ときにガスを遮断する方法、ｃ．一定流量のガスが一定
時間継続して流れ続けた時にガスを遮断する方法が公知
である。2. Description of the Related Art As a method for detecting gas leaks in general households, there are a. A method of detecting a leaked gas with a gas leak detector, b. Shutting off the gas when an abnormally large gas flow is detected by the gas meter; c. 2. Description of the Related Art A method of shutting off a gas when a constant flow rate of a gas has continued to flow for a certain period of time is known.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記ａ．の場
合は、ガス漏れ検知器が取り付けられていない部屋とか
屋内配管の途中等でガス漏れが起こっていても検出でき
ない。However, a. In the case of (1), it cannot be detected even if a gas leak has occurred in a room where no gas leak detector is installed or in the middle of indoor piping.
【０００４】次にｂ．の場合は、設定流量以下のガス漏
れについては検出できない。Next, b. In the case of, gas leaks below the set flow rate cannot be detected.
【０００５】次にｃ．の場合は、ガス器具の使用の仕方
によってはガス漏れありと判断されることがある。Next, c. In this case, it may be determined that there is gas leakage depending on how the gas appliance is used.
【０００６】本発明の目的は、ガスメータより下流側に
おいてガス漏れがあった場合、漏れ量の大小にかかわら
ず、短時間に正確にガス漏れありと判定してガスを遮断
したり、警報を出すことができるガス漏れ検出方法を提
供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for accurately determining a gas leak in a short time and shutting off the gas or issuing an alarm, regardless of the magnitude of the leak, when the gas leaks downstream of the gas meter. It is an object of the present invention to provide a method for detecting gas leaks.
【０００７】[0007]
【課題を解決するための手段】本発明に係るガス漏れ検
出方法は次のとおりである。The gas leak detecting method according to the present invention is as follows.
【０００８】ガス流量とガス供給圧力を検出し、この検
出したガス供給圧力とガス流量に相関関係が認められた
時にガス漏れありと判定するガス漏れ検出方法。[0008] The gas flow rate and the gas supply pressure are detected, and the detection is performed.
A correlation was found between the supplied gas supply pressure and gas flow rate
A gas leak detection method that sometimes determines that there is gas leak.
【０００９】[0009]
【作用】ガスメータはガス流量を検出し、ガス圧力検出
センサーはガス供給圧力を検出する。この検出値は、相
関性演算回路において監視されており、ガス供給圧力の
一定以上の変化が検出され、ガス供給圧力の変化とガス
流量の変化の間に相関関係が認められた場合にはガス漏
れありと判定する。一方、ガス供給圧力に一定以上の変
化がない場合にはガス漏れの判定は行わない。上記判定
の論拠は、ガス供給圧力は周囲の需要家のガスの使用量
により変動する。一方、一戸の需要家で見た場合、風呂
釜、ガス給湯器等の大量のガスを消費するガス器具内に
は通常ガバナーが組み込まれているため、ガスメータ部
分でのガス供給圧力が周囲の需要家でのガスの使用量に
基づく変動をおこしても、ガバナーがこれを吸収してし
まうため、これらの器具に流れるガス流量は一定であ
る。一方、ガス漏れの場合には、ガス供給圧力の変動に
よりガス流量が変化するので、このガス流量とガス供給
圧力との間の相関関係をみることにより、ガス漏れを検
出することができる。但し、ガスコンロ等小量のガスを
消費するガス器具にはガバナーの組み込まれていないも
のもあるため、最終的な判定は相関関係の大小にガス流
量、継続時間等の条件を組み合わせて行うことになる。The gas meter detects the gas flow rate, and the gas pressure detection sensor detects the gas supply pressure. This detected value is monitored by a correlation operation circuit, and when a change in the gas supply pressure that is equal to or more than a certain value is detected, and a correlation is found between the change in the gas supply pressure and the change in the gas flow rate, the gas is detected. It is determined that there is leakage. On the other hand, when the gas supply pressure does not change by a certain amount or more, the determination of gas leakage is not performed. The reason for the above determination is that the gas supply pressure fluctuates depending on the amount of gas used by the surrounding customers. On the other hand, when viewed by a single consumer, gas appliances that consume large amounts of gas, such as bath kettles and gas water heaters, usually incorporate a governor, so the gas supply pressure at the gas meter will not Even if fluctuations occur based on the amount of gas used in the house, the governor absorbs the fluctuations, so that the gas flow rate flowing through these appliances is constant. On the other hand, in the case of a gas leak, the gas flow rate changes due to the fluctuation of the gas supply pressure. Therefore, the gas leak can be detected by checking the correlation between the gas flow rate and the gas supply pressure. However, some gas appliances that consume a small amount of gas, such as gas stoves, do not include a governor, so the final decision is made by combining conditions such as the magnitude of the correlation and the gas flow rate and duration. Become.
【００１０】[0010]
【実施例】図１に基づいて本発明の実施例を説明する。
ガスメータでガス流量を検出し、更にこのガスメータに
取り付けられたガス圧力検出センサーによりガス供給圧
力を検出する。この検出値は、相関性演算回路に入力さ
れる。相関性演算回路ではガス供給圧力が一定（但し多
少の変動幅はみる）で、流量のみが変化している場合に
は相関性の演算は行わず、ガス供給圧力が変化し、ガス
供給圧力の変化とガス流量の変化との間に相関関係が認
められた場合には、ガス漏れありとしてガス漏れ判定回
路（圧力変動、流動変動、相関性の演算推論機構）に信
号を送り、ガス漏れ判定回路がガス漏れと判定するとガ
スを遮断する。或いは同時にガス漏れ警報を出す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.
The gas flow rate is detected by a gas meter, and the gas supply pressure is detected by a gas pressure detection sensor attached to the gas meter. This detected value is input to the correlation operation circuit. In the correlation operation circuit, when the gas supply pressure is constant (however, a slight variation width is observed) and only the flow rate is changed, the correlation operation is not performed, the gas supply pressure is changed, and the gas supply pressure is changed. If a correlation is found between the change and the change in gas flow rate, a signal is sent to the gas leak determination circuit (pressure fluctuation, flow fluctuation, correlation arithmetic inference mechanism) to determine that there is gas leakage, and the gas leakage is determined. If the circuit determines that there is a gas leak, the gas is shut off. Alternatively, a gas leak alarm is issued at the same time.
【００１１】[0011]
【発明の効果】本発明は以上のようにガス供給圧力とガ
ス流量との間の相関関係からガス漏れを判定するため、
ガスメータの下流側におけるどのようなガス漏れも、正
確かつ確実に検出できると共にガス漏れを判定するまで
の時間は短くて済み、安全性が向上する。As described above, according to the present invention, a gas leak is determined from the correlation between the gas supply pressure and the gas flow rate.
Any gas leak downstream of the gas meter can be detected accurately and reliably, and the time required to determine the gas leak can be shortened, improving safety.
【図１】本発明のフローを示す説明図。FIG. 1 is an explanatory diagram showing a flow of the present invention.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−50727（ＪＰ，Ａ) 特開 昭63−24493（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01M 3/00 - 3/40 G01F 1/00 G01F 3/22 G08B 21/00 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-50727 (JP, A) JP-A-63-24493 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G01M 3/00-3/40 G01F 1/00 G01F 3/22 G08B 21/00
Claims (1)
検出したガス供給圧力とガス流量に相関関係が認められ
た時にガス漏れありと判定するガス漏れ検出方法。1. A detects the gas flow rate and the gas supply pressure, this
A correlation was found between the detected gas supply pressure and the gas flow rate.
Gas leak detection method that determines that there is a gas leak when the gas leaks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05052253A JP3117837B2 (en) | 1993-03-12 | 1993-03-12 | Gas leak detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05052253A JP3117837B2 (en) | 1993-03-12 | 1993-03-12 | Gas leak detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06265437A JPH06265437A (en) | 1994-09-22 |
| JP3117837B2 true JP3117837B2 (en) | 2000-12-18 |
Family
ID=12909581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05052253A Expired - Fee Related JP3117837B2 (en) | 1993-03-12 | 1993-03-12 | Gas leak detection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3117837B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5151010B2 (en) * | 2005-04-05 | 2013-02-27 | トヨタ自動車株式会社 | Fuel cell system and gas leak detection method of the fuel cell system |
| JP5108273B2 (en) * | 2006-10-17 | 2012-12-26 | 東光東芝メーターシステムズ株式会社 | Gas appliance discrimination device and discrimination method |
| JP5108274B2 (en) * | 2006-10-17 | 2012-12-26 | 東光東芝メーターシステムズ株式会社 | Gas appliance discrimination device and discrimination method |
| JP5108275B2 (en) * | 2006-10-17 | 2012-12-26 | 東光東芝メーターシステムズ株式会社 | Gas appliance discrimination device and discrimination method |
| JP5032825B2 (en) * | 2006-10-27 | 2012-09-26 | 東光東芝メーターシステムズ株式会社 | Gas appliance discrimination device and discrimination method |
| JP5294388B2 (en) * | 2008-03-07 | 2013-09-18 | パナソニック株式会社 | Flow measuring device |
| EP2477020A1 (en) * | 2011-01-17 | 2012-07-18 | Clevergas Holding S.A. | System for detecting a fluid leak |
-
1993
- 1993-03-12 JP JP05052253A patent/JP3117837B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06265437A (en) | 1994-09-22 |
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