JPH0961284A - Pipe leakage monitor - Google Patents

Pipe leakage monitor

Info

Publication number
JPH0961284A
JPH0961284A JP22004495A JP22004495A JPH0961284A JP H0961284 A JPH0961284 A JP H0961284A JP 22004495 A JP22004495 A JP 22004495A JP 22004495 A JP22004495 A JP 22004495A JP H0961284 A JPH0961284 A JP H0961284A
Authority
JP
Japan
Prior art keywords
pipe
flow
downstream
gas
pressure
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.)
Granted
Application number
JP22004495A
Other languages
Japanese (ja)
Other versions
JP3579976B2 (en
Inventor
Kunio Kimata
Shinichi Nakane
Yasuhiro Umekage
伸一 中根
國雄 木全
康裕 梅景
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
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 Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP22004495A priority Critical patent/JP3579976B2/en
Publication of JPH0961284A publication Critical patent/JPH0961284A/en
Application granted granted Critical
Publication of JP3579976B2 publication Critical patent/JP3579976B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To reliably, highly accurately and automatically sense whether fluid leaks from a pipe line by closing a shut-off valve when flow of fluid in the pipe line drops to a predetermined value or lower and by measuring a pressure change at downstream of the shut-off valve. SOLUTION: A control means 22 monitors a flow rate in a pipe line 17 by a measured value of an instantaneous flow meter 21 and closes a shut-off valve 18 when the flow rate drops to a predetermined value or lower. When pressure in a downstream pipe line 20 measured by a downstream pressure detecting means 19 drops to a predetermined value or lower within a predetermined time, leakage is determined, and when measurement is complete, the valve 18 is opened and gas is normally supplied. By using the flow meter 21, drop of the flow rate to a predetermined value or lower can be determined instantly, so that a trouble such as a flame failure in a gas device 28 can be prevented even if the valve 18 is closed. When a reducing valve 24 reaches set pressure with the gas device 28 used during pressure measurement with the valve 18 closed, the gas may be supplied from the valve 24 allowing normal operation, while when the valve 24 is operated, leakage determination is stopped to have the valve 18 opened to normally supply the gas.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は、流体を輸送する輸送管
路の流体漏洩の有無を自動的に検知する配管漏洩監視装
置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piping leakage monitoring device for automatically detecting the presence or absence of fluid leakage in a transportation pipeline for transporting a fluid.
【0002】[0002]
【従来の技術】従来、流体を輸送する管路の漏洩監視装
置は、特開平4−64787号公報や特開平4−363
638号公報に示すようなガス供給配管の漏洩監視装置
の構成が知られていた。以下、その構成について図10
と図11を参照しながら説明する。
2. Description of the Related Art Conventionally, a leakage monitoring device for a pipeline for transporting a fluid has been disclosed in JP-A-4-64787 and JP-A-4-363.
A configuration of a leak monitoring device for gas supply piping as disclosed in Japanese Patent No. 638 has been known. Hereinafter, regarding the configuration, FIG.
Will be described with reference to FIG.
【0003】まず、図10に示す従来例では、プロパン
ガスなどのガス供給源1と、ガス供給管2と、ガス供給
源1からの供給ガス全体を積算する親ガスメーター3
と、各供給先の個別ガス使用量を積算する個別ガスメー
ター4と、個々のガス器具5とで構成とされていた。こ
こで、親ガスメーター3には、流量検出機構6およびこ
の検出機構により検出されたデータを取り入れて正常で
あるか否かを判断するCPU7と、前記CPU7によっ
て演算されたデータを信号線8を通じて取り出す通信制
御器9を備え、そのデータを電話回線10を通じてセン
ター側のホストコンピューター11に送出している構成
であった。ここで、12は圧力調整器、13はバルブで
ある。
First, in the conventional example shown in FIG. 10, a gas supply source 1 such as propane gas, a gas supply pipe 2, and a parent gas meter 3 for integrating the entire supply gas from the gas supply source 1.
And an individual gas meter 4 for integrating the individual gas usage of each supply destination, and an individual gas appliance 5. Here, the parent gas meter 3 takes in the flow rate detection mechanism 6 and the CPU 7 which takes in the data detected by this detection mechanism to judge whether it is normal, and the data calculated by the CPU 7 is taken out through the signal line 8. The communication controller 9 is provided and the data is transmitted to the host computer 11 on the center side through the telephone line 10. Here, 12 is a pressure regulator and 13 is a valve.
【0004】このような構成において、親ガスメーター
3に設置された流量検出機構6で流量を検出し、ガス使
用減少時間帯、最低流量およびこれらの偏差値を学習
し、これらの総合値と、現在データとを比較して現在デ
ータが正常の範囲に収まっているか否かを判断し、異常
と見なされた場合に警報出力を発生するものである。
In such a configuration, the flow rate detection mechanism 6 installed in the parent gas meter 3 detects the flow rate, and learns the gas usage reduced time zone, the minimum flow rate and their deviation values, and calculates the total value of these and the current value. The data is compared with the current data to determine whether the current data is within the normal range, and an alarm output is generated if the current data is considered abnormal.
【0005】また、図11に示す別の従来例では、ガス
供給源1からの供給ガス全体を積算する親ガスメーター
3と、ガス供給管2と、各供給先の個別ガスメーター4
を経てガス器具5に供給するとともに、前記親ガスメー
ター3および個別ガスメーター4は、流量発信機能14
を有し、前記各ガスメーターを管理する管理装置15と
の間に流量情報の交換自在なガス供給漏洩監視装置とし
ていた。ここで、16は微小漏洩監視メーターである。
Further, in another conventional example shown in FIG. 11, a parent gas meter 3 for integrating the entire supply gas from the gas supply source 1, a gas supply pipe 2, and an individual gas meter 4 for each supply destination.
The gas is supplied to the gas appliance 5 via the flowmeter, and the parent gas meter 3 and the individual gas meter 4 are provided with a flow rate transmitting function 14
And a gas supply leak monitoring device that has exchangeable flow rate information with the management device 15 that manages each gas meter. Here, 16 is a micro leak monitoring meter.
【0006】このような構成において、一日のうちのガ
ス使用量の少ない時間帯に所定時間の間のガス流量を各
ガスメーター別に管理装置に流量発信機能により集め、
親ガスメーター3の流量値Nsと、各個別ガスメーター
4の流量値N1,N2,………Nnの和N1+N2+…
……+Nnとを比較し、 Ns≦N1+N2+………+Nn …(式1) の場合は漏洩無しと見なし、 Ns>N1+N2+………+Nn …(式2) の場合は漏洩ありとする漏洩判断方法を有する構成とし
ていた。
In such a structure, the gas flow rate during a predetermined time is collected in the management device for each gas meter in the management device by the flow rate transmitting function in a time zone in which the gas usage is small in one day.
Sum N1 + N2 + ... of the flow rate value Ns of the parent gas meter 3 and the flow rate values N1, N2, ...
... + Nn, and if Ns ≤ N1 + N2 + ... + Nn (Equation 1), it is considered that there is no leakage, and if Ns> N1 + N2 + ... + Nn ... (Equation 2), there is a leakage determination method. It was configured to have.
【0007】[0007]
【発明が解決しようとする課題】しかしながら従来例の
ような配管漏洩監視装置では、全宅のガス器具が同時に
使用されない期間があるという前提の下に配管漏洩判別
を行っているが、集合住宅の宅数が多くなり、居住者の
生活形態が様々になってくると、本当に個別ガスメータ
の上流にガス漏れが有るのか、それとも実際にガスエア
コンのようなガス器具が連続して使われているのかあい
まいになり、配管漏洩判別手段による漏洩判断の信頼性
が著しく低下してしまう課題、さらに、口火の連続使用
があった場合でもガスメータ上流にガス漏れ有りと誤っ
て判別してしまうという課題があった。
However, in the pipe leakage monitoring device as in the conventional example, the pipe leakage determination is performed on the assumption that there is a period when the gas appliances of all homes are not used at the same time. As the number of homes increases and the lifestyles of residents change, is there really a gas leak upstream of individual gas meters, or is gas appliances such as a gas air conditioner continuously used? There is a problem that it becomes ambiguous and the reliability of the leak judgment by the pipe leak judging means is significantly reduced, and even if there is continuous use of igniting, it is erroneously judged that there is a gas leak upstream of the gas meter. It was
【0008】また、別の従来例では、ガス流量計測で±
3%程度の誤差があるため、各個別ガスメータの流量総
和を求めるときに、各メーターの誤差が重畳して拡大
し、漏洩判断の信頼性が著しく低下してしまう課題、そ
して、戸数が多くなってくると各個別メーターの流量の
集計を同時刻に行うことが非常に困難で、親ガスメータ
ーの計測時刻と異なる時刻に計測された各個別メーター
の流量総和を比較しても漏洩を判断する情報としては信
頼性が低いという課題があった。
In another conventional example, the gas flow rate measurement is ±
Since there is an error of about 3%, when calculating the total flow rate of each individual gas meter, the error of each meter is superimposed and expands, and the reliability of leak judgment is significantly reduced, and the number of units increases. When it comes, it is very difficult to collect the flow rate of each individual meter at the same time, and the information to judge the leakage even if the total flow rate of each individual meter measured at a time different from the measurement time of the parent gas meter is compared. However, there was a problem of low reliability.
【0009】本発明は上記課題を解決するもので、遮断
弁によって管路を閉塞して下流側圧力検出手段で管路内
の圧力変動を測定して漏洩を確実に精度よく判定するこ
とを第1の目的としている。
The present invention is to solve the above-mentioned problems. It is a first object of the present invention to block a pipe by a shutoff valve and measure a pressure fluctuation in the pipe by a downstream pressure detecting means to reliably and accurately determine a leak. The purpose of 1.
【0010】そして、遮断弁に並行したバイパス流路に
減圧弁を設けることによって、下流側でガス器具が使用
されたときでもガスを切らすことなく供給することを第
2の目的としている。
A second object is to provide a pressure reducing valve in a bypass passage parallel to the shutoff valve so that gas can be supplied without being exhausted even when a gas appliance is used on the downstream side.
【0011】また、下流に設けられた複数個の個別流量
計測手段によって管路内の流れ情報を検出することで既
設管路への設置を容易にすることを第3の目的としてい
る。
A third object is to facilitate installation in an existing pipeline by detecting flow information in the pipeline by a plurality of individual flow rate measuring means provided downstream.
【0012】さらに、下流に設けられた複数個のガス器
具の運転情報によってガス使用情報を検出しガスの流れ
を確実に検知することを第4の目的としている。
A fourth object is to reliably detect the gas flow by detecting the gas usage information from the operation information of a plurality of gas appliances provided downstream.
【0013】そして、遮断弁の上流側の上流圧力検出手
段と下流圧力検出手段の2つの圧力比較によって管路内
の流れ情報を検出することを第5の目的としている。
A fifth object is to detect the flow information in the pipeline by comparing the two pressures of the upstream pressure detecting means and the downstream pressure detecting means on the upstream side of the shutoff valve.
【0014】また、減圧弁が開いたとき遮断弁も開口し
て漏洩判定を停止し、ガス供給を自動的に可能にするこ
とを第6の目的としている。
A sixth object is to automatically open the shutoff valve when the pressure reducing valve is opened to stop the leakage determination and automatically supply the gas.
【0015】また、定期的に行う漏洩判定と、定期判定
時刻の間の時間帯にガス使用パターンからガス使用が少
ない時間帯に漏洩判定を行い判定精度を向上することを
第7の目的としている。
Further, a seventh object is to improve the accuracy of the determination by periodically performing the leakage determination and by performing the leakage determination in the time period during which the gas is less used from the gas use pattern in the time period between the periodic determination times. .
【0016】また、複数回の漏洩判定結果が全回一致し
たときに漏洩と判定することで漏洩判定精度を向上する
ことを第8の目的としている。
The eighth object is to improve the accuracy of the leak judgment by judging the leak when the results of the leak judgment of a plurality of times match all times.
【0017】また、複数回の漏洩判定結果のうち1回で
も漏洩と判定したときに漏洩判定とすることで安全側に
判定して漏洩事故を防止することを第9の目的としてい
る。
A ninth object is to prevent a leakage accident by making a safety judgment by making a leakage judgment when the leakage is judged even once even among the plural times of the leakage judgment results.
【0018】また、複数個の個別流量計測手段と制御手
段を無線通信によって情報交換することで漏洩監視装置
の設置性を向上することを第10の目的としている。
A tenth object is to improve the installability of the leak monitoring device by exchanging information between a plurality of individual flow rate measuring means and control means by wireless communication.
【0019】また、瞬時流量計測手段で管路内の流れが
停止したことを判定するので遮断弁を閉止しても、ガス
器具の失火などのトラブルを防止することを第11の目
的としている。
An eleventh object is to prevent a trouble such as misfire of the gas appliance even if the shutoff valve is closed because the instantaneous flow rate measuring means determines that the flow in the pipeline has stopped.
【0020】そして、漏洩ありと判定されたときデータ
伝送装置によって通報することを第12の目的としてい
る。
A twelfth object is to notify by the data transmission device when it is determined that there is a leak.
【0021】[0021]
【課題を解決するための手段】本発明は上記第1の目的
を達成するための第1の手段は、管路に設けた遮断弁
と、前記遮断弁の下流に備えた下流圧力検出手段と、前
記下流圧力検出手段の更に下流側管路に備えた管路内流
れ検出手段と、前記の管路内流れ検出手段によって管路
内の流れが所定値以下になった時に遮断弁を閉止し、前
記下流圧力検出手段の圧力変動を判定して漏洩を監視す
る制御手段を備えた構成とした。
The first means for achieving the above first object of the present invention is a shutoff valve provided in a pipe line, and a downstream pressure detecting means provided downstream of the shutoff valve. A pipeline flow detecting means provided in a pipeline further downstream of the downstream pressure detecting means, and a shutoff valve is closed when the flow in the pipeline becomes a predetermined value or less by the pipeline internal flow detecting means. The control means for judging the pressure fluctuation of the downstream pressure detection means and monitoring the leakage is provided.
【0022】そして、第2の目的を達成するための第2
の手段は、遮断弁の上流側と下流側を別流路で接続する
バイパス流路と、前記バイパス流路の途中に減圧弁を備
えた構成とした。
The second purpose for achieving the second object
The means has a configuration in which a bypass passage connecting the upstream side and the downstream side of the shutoff valve with another passage and a pressure reducing valve in the middle of the bypass passage are provided.
【0023】また、第3の目的を達成するための第3の
手段は、遮断弁の下流側に備えられた複数個の個別流量
計測手段からの流量情報信号によって管路内の流れを判
定する管路内流れ検出手段を備えた構成とした。
The third means for achieving the third object is to judge the flow in the pipeline by the flow rate information signals from a plurality of individual flow rate measuring means provided on the downstream side of the shutoff valve. The configuration is provided with a flow detecting means in the pipeline.
【0024】さらに、第4の目的を達成するための第4
の手段は、遮断弁の下流側に備えられた複数個のガス器
具からの運転情報信号によって管路内の流れを判定する
管路内流れ検出手段を備えた構成とした。
Further, a fourth object for achieving the fourth object
The means of (1) is configured to include an in-pipe flow detecting means for determining the flow in the pipe by operating information signals from a plurality of gas appliances provided on the downstream side of the shutoff valve.
【0025】そして、第5の目的を達成するための第5
の手段は、遮断弁の上流側に備えた上流圧力検出手段で
検出された第1の圧力値と、下流側圧力検出手段で検出
された第2の圧力値を比較することによって管路内の流
れを検出する管路内流れ検出手段を備えた構成とした。
And the fifth to achieve the fifth objective
Means for comparing the first pressure value detected by the upstream pressure detecting means provided on the upstream side of the shutoff valve with the second pressure value detected by the downstream pressure detecting means, The configuration is provided with a flow detecting means in the pipeline for detecting the flow.
【0026】また、第6の目的を達成するための第6の
手段は、減圧弁が開いたとき、遮断弁も開口して漏洩判
定を停止する制御手段を備えた構成とした。
The sixth means for attaining the sixth object has a control means for stopping the leak judgment by opening the shut-off valve when the pressure reducing valve is opened.
【0027】さらに、第7の目的を達成するための第7
の手段は、下流圧力検出手段の圧力変動を学習し、ガス
使用が最も少ない時間帯に判定した結果から漏洩を監視
する制御手段を備えた構成とした。
Furthermore, a seventh object for achieving the seventh object
The means is configured to include a control means that learns the pressure fluctuation of the downstream pressure detection means and monitors the leakage from the result of determination in the time period when the gas is least used.
【0028】そして、第8の目的を達成するための第8
の手段は、複数回の漏洩判定を行い、その結果が全回漏
洩と判定したときのみ漏洩警報信号を出力する制御手段
を備えた構成とした。
Then, an eighth object for achieving the eighth object
The means is configured to include a control means for performing the leakage determination a plurality of times and outputting the leakage alarm signal only when the result is determined to be the leakage all times.
【0029】また、第9の目的を達成するための第9の
手段は、複数回の漏洩判定を行い、その結果が1回以上
漏洩と判定したとき漏洩警報信号を出力する制御手段を
備えた構成とした。
The ninth means for achieving the ninth object is provided with a control means for performing a leak determination a plurality of times and outputting a leak warning signal when the result is determined to be a leak one or more times. It was configured.
【0030】さらに、第10の目的を達成するための第
10の手段は、複数個の個別流量計測手段にそれぞれ備
えた流量情報信号を送信する第1の無線通信手段と、前
記第1の無線通信手段からの送信信号を受信する第2の
無線通信を制御手段に備えた構成とした。
Further, a tenth means for achieving the tenth object is a first wireless communication means for transmitting flow rate information signals respectively provided in a plurality of individual flow rate measuring means, and the first wireless communication means. The second wireless communication for receiving the transmission signal from the communication means is provided in the control means.
【0031】また、第11の目的を達成するための第1
1の手段は、瞬時流量計測手段を用いた管路内流れ検出
手段を備えた構成とした。
Further, the first for achieving the eleventh object
The first means is configured to include a pipe flow detection means using an instantaneous flow rate measurement means.
【0032】そして、第12の目的を達成するための第
12の手段は、制御手段で得られた所定の判定結果を送
信するデータ伝送装置を備えた構成とした。
The twelfth means for attaining the twelfth object has a configuration including a data transmission device for transmitting the predetermined determination result obtained by the control means.
【0033】[0033]
【作用】本発明は上記構成によって、第1の手段によれ
ば、遮断弁によって管路を閉塞して下流側圧力検出手段
で管路内の圧力変動を測定して漏洩を確実に精度よく判
定することができる。
According to the first aspect of the present invention, according to the first means, the shutoff valve closes the pipeline and the downstream pressure detecting means measures the pressure fluctuation in the pipeline to reliably and accurately determine the leak. can do.
【0034】そして、第2の手段によれば、遮断弁に並
行したバイパス流路に減圧弁を設けることによって、下
流側でガス器具が使用されたときでもガスを供給するこ
とができる。
According to the second means, by providing the pressure reducing valve in the bypass flow path parallel to the shutoff valve, the gas can be supplied even when the gas appliance is used on the downstream side.
【0035】また、第3の手段によれば、下流に設けら
れた複数個の個別流量計測手段によって管路内の流れ情
報を検出することで既設管路への設置を容易にすること
ができる。
Further, according to the third means, it is possible to facilitate the installation in the existing pipeline by detecting the flow information in the pipeline by the plurality of individual flow rate measuring means provided in the downstream. .
【0036】さらに、第4の手段によれば、下流に設け
られた複数個のガス器具の運転情報によってガス使用情
報を検出しガスの流れを確実に検知することができる。
Further, according to the fourth means, the gas usage information can be detected by the operation information of the plurality of gas appliances provided downstream, and the gas flow can be detected reliably.
【0037】そして、第5の手段によれば、遮断弁の上
流側の上流圧力検出手段と下流圧力検出手段の2つの圧
力比較によって管路内の流れ情報を検出することができ
る。
According to the fifth means, the flow information in the pipeline can be detected by comparing the two pressures of the upstream pressure detecting means and the downstream pressure detecting means on the upstream side of the shutoff valve.
【0038】また、第6の手段によれば、減圧弁が開い
たとき遮断弁も開口して漏洩判定を停止し、ガス供給を
自動的に可能にすることができる。
Further, according to the sixth means, when the pressure reducing valve is opened, the shutoff valve is also opened to stop the leak determination, and the gas supply can be automatically enabled.
【0039】また、第7の手段によれば、定期的に行う
漏洩判定と、定期判定時刻の間の時間帯にガス使用パタ
ーンからガス使用が少ない時間帯に漏洩判定を行い判定
精度を向上することができる。
Further, according to the seventh means, the leakage determination is carried out periodically and the leakage determination is carried out from the gas use pattern in the time zone between the regular determination times and in the time zone in which the gas use is small, thereby improving the determination accuracy. be able to.
【0040】そして、第8の手段によれば、複数回の漏
洩判定結果が全回一致したときに漏洩と判定することで
漏洩判定精度を向上することができる。
According to the eighth means, it is possible to improve the accuracy of the leak determination by determining the leak when the results of the leak determination of a plurality of times match all times.
【0041】さらに、第9の手段によれば、複数回の漏
洩判定結果のうち1回でも漏洩と判定したときに漏洩判
定とすることで安全側に判定して漏洩事故を防止するこ
とができる。
Further, according to the ninth means, it is possible to prevent a leakage accident by making a safety judgment by making a leakage judgment when even one of the plural times of leakage judgment results is judged to be a leakage. .
【0042】また、第10の手段によれば、複数個の個
別流量計測手段と制御手段を無線通信によって情報交換
することで漏洩監視装置の設置性を向上することができ
る。
According to the tenth means, it is possible to improve the installability of the leakage monitoring device by exchanging information between the plurality of individual flow rate measuring means and the control means by wireless communication.
【0043】そして、第11の手段によれば、瞬時流量
計測手段で管路内の流れが停止したことを判定するので
遮断弁を閉止してもガス器具の失火などのトラブルを防
止することができる。
According to the eleventh means, since the instantaneous flow rate measuring means determines that the flow in the pipeline has stopped, even if the shutoff valve is closed, troubles such as misfiring of the gas appliance can be prevented. it can.
【0044】さらに、第12の手段によれば、漏洩あり
と判定されたときデータ伝送装置によって異常を通報す
ることができる。
Further, according to the twelfth means, the abnormality can be notified by the data transmission device when it is judged that there is a leak.
【0045】[0045]
【実施例】以下、本発明の第1の実施例の配管漏洩監視
装置を、図1から図5を参照して説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pipe leakage monitoring device according to a first embodiment of the present invention will be described below with reference to FIGS.
【0046】図1と図2に示すように、管路17に設け
た遮断弁18と、前記遮断弁18の下流に備えた下流圧
力検出手段19と、前記下流圧力検出手段19の更に下
流側管路20に備えた管路内流れ検出手段としての瞬時
流量計21と、前記瞬時流量計21によって下流側管路
20内の流量が所定値以下になった時に遮断弁18を閉
止し、前記下流圧力検出手段19の圧力変動を測定して
漏洩を監視する制御手段22を備えた構成とした。そし
て、遮断弁18の上流側と下流側を別流路で接続するバ
イパス流路23と、前記バイパス流路23の途中に減圧
弁24を備えた構成とした。ここで、25は主管路、2
6は手動式遮断弁、27は個別流量計測手段、28はガ
ス器具、29は集合住宅、30は地面、31はデータ伝
送装置としての無線電話装置である。
As shown in FIGS. 1 and 2, a shutoff valve 18 provided in the pipe line 17, a downstream pressure detecting means 19 provided downstream of the shutoff valve 18, and a further downstream side of the downstream pressure detecting means 19. An instantaneous flow meter 21 as a pipeline flow detecting means provided in the pipeline 20, and the shut-off valve 18 is closed when the flow rate in the downstream pipeline 20 is below a predetermined value by the instantaneous flow meter 21. The control means 22 for monitoring the leakage by measuring the pressure fluctuation of the downstream pressure detecting means 19 is provided. Further, the bypass valve 23 connecting the upstream side and the downstream side of the shutoff valve 18 with another channel, and the pressure reducing valve 24 in the middle of the bypass channel 23 are provided. Here, 25 is the main pipeline, 2
6 is a manual shutoff valve, 27 is an individual flow rate measuring means, 28 is a gas appliance, 29 is a housing complex, 30 is the ground, and 31 is a wireless telephone device as a data transmission device.
【0047】このような構成において、制御手段22で
は、瞬時流量計21の情報によって流量を監視し、流量
が所定値Q0以下になったときに、遮断弁18を閉止す
る。そして、下流側の圧力検出手段19によって測定さ
れた下流側管路20内の圧力変動が、図3に示すよう
に、所定時間ΔT以内に所定値ΔP以上低下すれば漏洩
と判定することができる。計測が完了すれば、遮断弁1
8は再び開きガスを正常に供給するものである。ここ
で、瞬時流量計21を使用しているため、流量が所定値
以下になることを瞬時に判定することができ、遮断弁1
8を閉止してもガス器具28の失火などのトラブルを発
生することがない。従来の膜式流量計では、1時間計測
して流量が所定値以下であっても、今現在の流量がわか
らないので、遮断弁を閉止すると使用され始めたガス器
具を失火させるという問題があった。
In such a structure, the control means 22 monitors the flow rate by the information of the instantaneous flow meter 21, and closes the shutoff valve 18 when the flow rate becomes equal to or less than the predetermined value Q0. Then, as shown in FIG. 3, if the pressure fluctuation in the downstream pipeline 20 measured by the downstream pressure detecting means 19 decreases by a predetermined value ΔP or more within a predetermined time ΔT, it can be determined that there is a leak. . When measurement is completed, shutoff valve 1
8 is for reopening and supplying the gas normally. Here, since the instantaneous flowmeter 21 is used, it can be instantly determined that the flow rate is below a predetermined value, and the shutoff valve 1
Even if 8 is closed, trouble such as misfire of the gas appliance 28 does not occur. In the conventional membrane type flow meter, even if the flow rate was measured for one hour and the flow rate was less than a predetermined value, the current flow rate was not known, so there was a problem that closing the shutoff valve would cause a gas appliance that was used to misfire. .
【0048】そして、遮断弁18を閉止して圧力を計測
している間に、もしもガス器具が使用された場合、図4
に示すように、下流側管路20内の圧力が低下し、減圧
弁に設定された所定の圧力P1に達すると、減圧弁24
からガスが供給され、ガス器具は正常に運転することが
できる。減圧弁24が動作すれば、漏洩判定を停止する
と共に遮断弁も開口し、ガス器具が最大燃焼になる前に
ガスは正常に供給され安全に運転することができるので
ある。
Then, if the gas appliance is used while the shutoff valve 18 is closed and the pressure is being measured, as shown in FIG.
As shown in FIG. 4, when the pressure in the downstream side pipe line 20 decreases and reaches a predetermined pressure P1 set in the pressure reducing valve, the pressure reducing valve 24
The gas is supplied from the gas appliances and the gas appliances can operate normally. When the pressure reducing valve 24 operates, the leakage determination is stopped and the shutoff valve is opened, so that the gas can be normally supplied and the gas appliance can be safely operated before the gas appliance reaches the maximum combustion.
【0049】また、漏洩判定は所定の間隔で定期的に行
われるが、定期的に行う漏洩監視では、所定時刻T1に
なれば、その時刻T1より最初に流量がQ0以下になっ
た時に漏洩監視を行うが、その場合には、比較的大きい
流量状態の場合や短時間後にガス器具が使用されてうま
く測定できないことがあり、判定の信頼性が悪くなる場
合があった。しかし、その定期間隔の間にもパターン学
習によって漏洩監視に最も適した時間帯を探し出して漏
洩判定を行うことで漏洩監視の信頼性を高めることがで
きる。それは、図5に示すように、制御手段によりガス
流量を監視していて流量が、長時間に渡り所定流量Q0
以下になる最も測定条件のよいときをパターン学習して
検出する。そして、その時刻になれば遮断弁を閉止し
て、漏洩を監視する。このように、最も測定条件のよい
時刻T0を検出して、漏洩監視することで判定精度と信
頼性を向上することができるのである。
Further, although the leakage determination is periodically performed at a predetermined interval, in the leakage monitoring which is regularly performed, when the predetermined time T1 is reached, the leakage monitoring is first performed when the flow rate becomes Q0 or less after the time T1. However, in that case, there was a case where the gas appliance was used in a relatively large flow rate state or a gas instrument was used after a short time and the measurement could not be performed well, and the reliability of the determination deteriorated. However, the reliability of the leakage monitoring can be enhanced by searching the time zone most suitable for the leakage monitoring and performing the leakage determination by pattern learning during the regular intervals. As shown in FIG. 5, the control means monitors the gas flow rate so that the flow rate is the predetermined flow rate Q0 for a long time.
Pattern learning is performed to detect when the following measurement conditions are the best. Then, at that time, the shutoff valve is closed and the leakage is monitored. Thus, the detection accuracy and reliability can be improved by detecting the time T0 with the best measurement conditions and monitoring the leakage.
【0050】さらに、前記漏洩監視を複数回行うこと
で、その複数回の判定結果を用いて、全回の判定結果が
一致したときに、漏洩と判定することで判定精度を向上
し、ガス供給の誤遮断を防止することができる。また、
別のアルゴリズムでは1回でも漏洩と判定したときに、
漏洩と判定することで、安全側に動作させてガス供給の
安全性を高めることができる。これらのアルゴリズム
は、状況に応じて使用することができ、漏洩監視装置を
設置した直後は、全回一致のアルゴを採用して漏洩監視
の適用性を確認しながら監視を行い、所定期間経過して
漏洩監視が正常に行われるようになれば、漏洩判定を1
回で決定するようにしていくことで誤動作を低減するこ
とができる。また、漏洩監視装置を設置してからの経過
時間を見ながら、漏洩判定を行う回数や漏洩を決定する
方法を変更していく機能を付加しておくことで、自動的
に判定精度を向上していくことができる。
Further, by performing the leakage monitoring a plurality of times, the determination results of the plurality of times are used, and when the determination results of all times match, the determination accuracy is improved by determining the leakage, and the gas supply is improved. It is possible to prevent erroneous cutoff. Also,
In another algorithm, even if it is judged as leakage even once,
By determining that there is a leak, it is possible to operate on the safe side and enhance the safety of gas supply. These algorithms can be used depending on the situation, and immediately after installing the leak monitoring device, the all-matching algo is adopted to monitor the applicability of the leak monitoring, and the predetermined period elapses. If the leakage monitoring is performed normally, the leakage judgment will be 1
Malfunctions can be reduced by making the determination once. In addition, the accuracy of the judgment is automatically improved by adding a function to change the number of leak judgments and the method of determining leaks while watching the elapsed time after installing the leak monitor. You can go.
【0051】そして、ここで漏洩と判定された場合、制
御手段22に接続された無線電話装置31によって、漏
洩警報がガス供給管理センターなどへ自動的に通報され
る。無線電話装置を用いることで配線工事がいらない
し、電話番号を登録しておくことによって様々なところ
に容易に異常通報を行うことができる。
If it is determined that there is a leak, a leak alarm is automatically notified to the gas supply management center or the like by the wireless telephone device 31 connected to the control means 22. By using a wireless telephone device, wiring work is not required, and by registering a telephone number, it is possible to easily report an abnormality to various places.
【0052】次に、第2の実施例について図6と図7を
用いて説明する。上記第一の実施例と同一構造で、かつ
同一作用をする部分には同一符号を付して詳細な説明は
略し、異なる部分を中心に説明する。
Next, a second embodiment will be described with reference to FIGS. 6 and 7. The parts having the same structure as those of the first embodiment and having the same function are designated by the same reference numerals, and detailed description thereof will be omitted, and different parts will be mainly described.
【0053】図6と図7に示すように、遮断弁18の下
流側に備えられた複数個の個別流量計測手段である各ガ
スメーター27の流量信号によって下流側管路20内の
流れを判定する管路内流れ判定手段を備えた構成とし
た。ここで、32は第1の無線通信手段、33は第2の
無線通信手段である。
As shown in FIGS. 6 and 7, the flow in the downstream conduit 20 is determined by the flow rate signals of the gas meters 27, which are a plurality of individual flow rate measuring means provided on the downstream side of the shutoff valve 18. It is configured to include a flow determining means in the pipeline. Here, 32 is a first wireless communication means, and 33 is a second wireless communication means.
【0054】このような構成において、各ガスメーター
27の流量情報を第1の無線通信手段32で送信し、制
御手段22に備えた第2の無線通信手段33で受信す
る。各ガスメーター27の流量情報が全て所定値以下に
なったときに、流量停止と判定し、遮断弁18を閉止す
る。そして、下流側管路20内の圧力を測定して漏洩判
定を行うのである。漏洩判定は、第1の実施例と同様に
行うものである。そして、各ガスメーターのうち、1台
でも流量を関知したとき、その情報を無線信号にて制御
手段22に伝え、漏洩監視を停止すると共に、遮断弁を
開口するものである。このように、ガスメーターが既に
設置されている集合住宅の場合、無線通信手段を各ガス
メーターに設置する工事を追加するだけでよく簡単に施
工作業が行える効果がある。
In such a configuration, the flow rate information of each gas meter 27 is transmitted by the first wireless communication means 32 and received by the second wireless communication means 33 provided in the control means 22. When all the flow rate information of each gas meter 27 is below a predetermined value, it is determined that the flow rate is stopped and the shutoff valve 18 is closed. Then, the leak determination is performed by measuring the pressure in the downstream pipe line 20. Leakage determination is performed in the same manner as in the first embodiment. When even one of the gas meters detects the flow rate, the information is transmitted to the control means 22 by a radio signal to stop the leakage monitoring and open the shutoff valve. As described above, in the case of an apartment house in which a gas meter has already been installed, there is an effect that the construction work can be easily performed simply by adding construction for installing the wireless communication means to each gas meter.
【0055】次に、第3の実施例について図8を用いて
説明する。上記第一の実施例と同一構造で、かつ同一作
用をする部分には同一符号を付して詳細な説明は略し、
異なる部分を中心に説明する。
Next, a third embodiment will be described with reference to FIG. The same structure as that of the first embodiment, and the portions having the same functions are denoted by the same reference numerals, and detailed description thereof will be omitted.
The different parts will be mainly described.
【0056】図8に示すように、遮断弁18の下流側に
備えられた複数個のガス器具28からの運転情報によっ
て下流側管路20内の流れを判定する管路内流れ検出手
段を備えた構成とした。
As shown in FIG. 8, an in-pipe flow detecting means for determining the flow in the downstream pipe 20 based on operation information from a plurality of gas appliances 28 provided on the downstream side of the shutoff valve 18 is provided. It has a different configuration.
【0057】このような構成において、各ガス器具28
の運転情報を第1の無線通信手段32で送信し、制御手
段22に備えた第2の無線通信手段33で受信する。各
ガス器具28の運転情報が全て運転停止になったとき
に、流量停止と判定し、遮断弁18を閉止する。そし
て、下流側管路20内の圧力を測定して漏洩判定を行う
ことができるのである。漏洩判定は、第1の実施例と同
様に行うものである。ここで、各ガス器具のうち、1台
でも運転を関知したとき、その情報を無線信号にて制御
手段22に伝え、漏洩監視を停止すると共に、遮断弁1
8を開口するものである。このように、ガスメーターが
既に設置されている集合住宅の場合、無線通信手段を各
ガス器具に設置する工事を追加するだけでよく簡単に施
工作業が行える効果がある。
In such a configuration, each gas appliance 28
The driving information is transmitted by the first wireless communication means 32 and is received by the second wireless communication means 33 provided in the control means 22. When the operation information of all the gas appliances 28 is stopped, it is determined that the flow rate is stopped and the shutoff valve 18 is closed. Then, the leak determination can be performed by measuring the pressure in the downstream side pipeline 20. Leakage determination is performed in the same manner as in the first embodiment. Here, when even one of the gas appliances is aware of the operation, the information is transmitted to the control means 22 by a radio signal to stop the leakage monitoring and the shutoff valve 1
8 is opened. As described above, in the case of an apartment house in which a gas meter is already installed, there is an effect that the construction work can be easily performed by simply adding construction for installing the wireless communication means to each gas appliance.
【0058】次に、第4の実施例について図9を用いて
説明する。上記第一の実施例と同一構造で、かつ同一作
用をする部分には同一符号を付して詳細な説明は略し、
異なる部分を中心に説明する。
Next, a fourth embodiment will be described with reference to FIG. The same structure as that of the first embodiment, and the portions having the same functions are denoted by the same reference numerals, and detailed description thereof will be omitted.
The different parts will be mainly described.
【0059】図9に示すように、遮断弁18の上流側に
備えた上流圧力検出手段34で検出された第1の圧力値
P1と、下流圧力検出手段19で検出された第2の圧力
値P2を比較することによって管路17内の流れを検出
する管路内流れ検出手段を備えた構成とした。
As shown in FIG. 9, the first pressure value P1 detected by the upstream pressure detecting means 34 provided on the upstream side of the shutoff valve 18 and the second pressure value detected by the downstream pressure detecting means 19. It is configured to include an in-pipe flow detecting means for detecting the flow in the pipe 17 by comparing P2.
【0060】このような構成において、第1の圧力値P
1と、第2の圧力値P2が、 P1≦P2 の関係になったときに、流量停止と判定し、遮断弁18
を閉止する。そして、下流側管路20内の圧力を下流圧
力検出手段19で測定して漏洩判定を行うことができる
のである。漏洩判定は、第1の実施例と同様に行うもの
である。そして、 P1>P2 となった時、ガスが使用され始めたと判定し、漏洩監視
を停止すると共に、遮断弁18を開口するものである。
In such a structure, the first pressure value P
When 1 and the second pressure value P2 have a relationship of P1 ≦ P2, it is determined that the flow rate is stopped, and the shutoff valve 18
Close. Then, the leak determination can be performed by measuring the pressure in the downstream side pipeline 20 by the downstream pressure detecting means 19. Leakage determination is performed in the same manner as in the first embodiment. When P1> P2, it is determined that the gas has started to be used, the leakage monitoring is stopped, and the shutoff valve 18 is opened.
【0061】また、遮断弁18の上流側に上流圧力検出
手段を設けることによって、遮断弁18が閉止されてい
る場合でも、バイパス流路23が開口していれば、管路
内の流れがどの方向に流れているかが判定できるもので
ある。よって、減圧弁24が長時間、開口している状態
が続いている場合でも、P1、P2によって管路の流れ
を監視することができ、その流量、すなわち圧力差が所
定流量以下であれば、漏洩監視を行うこともできる。
Further, by providing the upstream pressure detecting means on the upstream side of the shutoff valve 18, even if the shutoff valve 18 is closed, as long as the bypass flow passage 23 is open, the flow in the pipe line can be determined. It is possible to determine whether the flow is flowing in the direction. Therefore, even when the pressure reducing valve 24 remains open for a long time, the flow in the pipeline can be monitored by P1 and P2, and if the flow rate, that is, the pressure difference is equal to or less than the predetermined flow rate, Leakage monitoring can also be performed.
【0062】[0062]
【発明の効果】以上の説明から明らかなように本発明の
配管漏洩監視装置によれば、次の効果が得られる。
As is apparent from the above description, the pipe leakage monitoring device of the present invention has the following advantages.
【0063】本発明の第1の手段によれば遮断弁によっ
て管路を閉塞して下流側圧力検出手段で管路内の圧力変
動を判定して漏洩を確実に精度よく判定することができ
る。
According to the first means of the present invention, the shutoff valve closes the pipeline, and the downstream side pressure detecting means determines the pressure fluctuation in the pipeline, so that the leak can be reliably and accurately determined.
【0064】そして、第2の手段によれば、遮断弁に並
行したバイパス流路に減圧弁を設けることによって、下
流側でガス器具が使用されたときでもガスを供給するこ
とができ、失火を防止することができる。
According to the second means, by providing the pressure reducing valve in the bypass passage parallel to the shutoff valve, the gas can be supplied even when the gas appliance is used on the downstream side, and the misfire is prevented. Can be prevented.
【0065】また、第3の手段によれば、下流に設けら
れた複数個の個別流量計測手段によって管路内の流れ情
報を検出することで既設管路への設置を容易にすること
ができる。
Further, according to the third means, it is possible to facilitate the installation in the existing pipeline by detecting the flow information in the pipeline by the plurality of individual flow rate measuring means provided in the downstream. .
【0066】さらに、第4の手段によれば、下流に設け
られた複数個のガス器具の運転情報によってガス使用情
報を検出しガスの使用情報を確実に検知することができ
る。
Further, according to the fourth means, the gas use information can be detected by the operation information of the plurality of gas appliances provided downstream, and the gas use information can be reliably detected.
【0067】そして、第5の手段によれば、遮断弁の上
流側の上流圧力検出手段と下流圧力検出手段の2つの圧
力比較によって管路内の流れ情報を検出することができ
る。
According to the fifth means, the flow information in the pipe can be detected by comparing the two pressures of the upstream pressure detecting means and the downstream pressure detecting means on the upstream side of the shutoff valve.
【0068】また、第6の手段によれば、減圧弁が開い
たとき遮断弁も開口して漏洩判定を停止し、ガス使用を
自動的に可能にすることができる。
Further, according to the sixth means, when the pressure reducing valve is opened, the shutoff valve is also opened to stop the leak judgment, and the gas can be automatically used.
【0069】また、第7の手段によれば、定期判定時刻
の間の時間帯にガス使用パターンからガス使用が少ない
時間帯に漏洩判定を行い判定精度を向上することができ
る。
Further, according to the seventh means, it is possible to improve the determination accuracy by performing the leakage determination from the gas use pattern during the time period between the regular determination times and during the time period when the gas usage is small.
【0070】また、第8の手段によれば、複数回の漏洩
判定結果が全回一致したときに漏洩と判定することで漏
洩判定精度を向上することができる。
Further, according to the eighth means, it is possible to improve the accuracy of the leak judgment by judging the leak when the results of the leak judgment of a plurality of times match all times.
【0071】また、第9の手段によれば、複数回の漏洩
判定結果のうち1回でも漏洩と判定したときに漏洩判定
とすることで安全側に判定して漏洩事故を防止すること
ができる。
According to the ninth means, it is possible to prevent a leakage accident by making a safety judgment by making a leakage judgment when it is judged that even one of the leakage judgment results of a plurality of times is leakage. .
【0072】また、第10の手段によれば、複数個の個
別流量計測手段と制御手段を無線通信によって情報交換
することで漏洩監視装置の設置性を向上することができ
る。
According to the tenth means, it is possible to improve the installability of the leakage monitoring device by exchanging information between the plurality of individual flow rate measuring means and the control means by wireless communication.
【0073】また、第11の手段によれば、瞬時流量計
測手段の情報により管路内の流れが停止したことを判定
するので、現在の流れ状態とよく対応しているので、遮
断弁を閉止してもガス器具の失火などのトラブルを防止
することができる。そして、漏洩ありと判定されたとき
電話回線によって通報することができ、様々なところに
容易に通報することができる。
Further, according to the eleventh means, it is judged from the information of the instantaneous flow rate measuring means that the flow in the pipeline has stopped. Therefore, since it corresponds well to the current flow state, the shutoff valve is closed. Even then, troubles such as misfire of gas appliances can be prevented. Then, when it is determined that there is a leak, it is possible to make a notification via a telephone line, and it is possible to easily make a notification to various places.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の実施例を示す配管漏洩監視装置の構成
FIG. 1 is a configuration diagram of a pipe leakage monitoring device showing an embodiment of the present invention.
【図2】同装置の制御手段周辺の構成図FIG. 2 is a block diagram of the periphery of the control means of the device.
【図3】同装置の動作を説明する特性図FIG. 3 is a characteristic diagram illustrating the operation of the device.
【図4】同装置の別の動作を説明する特性図FIG. 4 is a characteristic diagram illustrating another operation of the device.
【図5】同装置のさらに別の動作を説明する特性図FIG. 5 is a characteristic diagram illustrating still another operation of the device.
【図6】本発明の他の実施例を示す配管漏洩監視装置の
構成図
FIG. 6 is a configuration diagram of a pipe leakage monitoring device showing another embodiment of the present invention.
【図7】同装置の制御手段周辺の構成図FIG. 7 is a block diagram showing the configuration around the control means of the device.
【図8】本発明の他の実施例を示す配管漏洩監視装置の
構成図
FIG. 8 is a configuration diagram of a pipe leakage monitoring device showing another embodiment of the present invention.
【図9】本発明のさらに他の実施例を示す配管漏洩監視
装置の構成図
FIG. 9 is a configuration diagram of a pipe leakage monitoring device showing still another embodiment of the present invention.
【図10】従来の配管漏洩監視装置の構成図FIG. 10 is a configuration diagram of a conventional pipe leakage monitoring device.
【図11】従来の他の配管漏洩監視装置の構成図FIG. 11 is a block diagram of another conventional pipe leakage monitoring device.
【符号の説明】[Explanation of symbols]
17 管路 18 遮断弁 19 下流圧力検出手段 20 下流側管路 21 瞬時流量計(管路内流れ検出手段) 22 制御手段 23 バイパス流路 24 減圧弁 27 ガスメーター(個別流量計測手段) 28 ガス器具 31 無線電話装置(データ伝送装置) 32 第1の無線通信手段 33 第2の無線通信手段 34 上流側圧力検出手段 17 Pipeline 18 Shutoff Valve 19 Downstream Pressure Detection Means 20 Downstream Pipeline 21 Instantaneous Flowmeter (Pipeline Flow Detection Means) 22 Control Means 23 Bypass Flow Path 24 Pressure Reduction Valve 27 Gas Meter (Individual Flowrate Measurement Means) 28 Gas Appliance 31 Wireless telephone device (data transmission device) 32 First wireless communication means 33 Second wireless communication means 34 Upstream pressure detection means

Claims (12)

    【特許請求の範囲】[Claims]
  1. 【請求項1】管路に設けた遮断弁と、前記遮断弁の下流
    に備えた下流圧力検出手段と、前記下流圧力検出手段の
    更に下流側管路に備えた管路内流れ検出手段と、前記の
    管路内流れ検出手段によって管路内の流れが所定値以下
    になった時に遮断弁を閉止し、前記下流圧力検出手段の
    圧力変動を判定して漏洩を監視する制御手段を備えた配
    管漏洩監視装置。
    1. A shutoff valve provided in a pipe line, a downstream pressure detection means provided downstream of the shutoff valve, and an in-pipe flow flow detection means provided in a downstream side pipe line of the downstream pressure detection means. A pipe provided with a control means for closing the shutoff valve when the flow in the pipeline becomes a predetermined value or less by the flow detection means in the pipeline and for judging the pressure fluctuation of the downstream pressure detection means to monitor the leakage. Leakage monitoring device.
  2. 【請求項2】遮断弁の上流側と下流側を別流路で接続す
    るバイパス流路と、前記バイパス流路の途中に減圧弁を
    備えた請求項1記載の配管漏洩監視装置。
    2. The pipe leakage monitoring device according to claim 1, further comprising a bypass passage connecting the upstream side and the downstream side of the shutoff valve with separate passages, and a pressure reducing valve in the middle of the bypass passage.
  3. 【請求項3】遮断弁の下流側に備えられた複数個の個別
    流量計測手段からの流量情報信号によって管路内の流れ
    を判定する管路内流れ検出手段を備えた請求項1又は請
    求項2記載の配管漏洩監視装置。
    3. A pipe flow detecting means for judging the flow in the pipe according to flow rate information signals from a plurality of individual flow rate measuring devices provided on the downstream side of the shutoff valve. 2. The pipe leakage monitoring device described in 2.
  4. 【請求項4】遮断弁の下流側に備えられた複数個のガス
    器具からの運転情報信号によって管路内の流れを判定す
    る管路内流れ検出手段を備えた請求項1又は請求項2記
    載の配管漏洩監視装置。
    4. The pipe flow detecting means for judging the flow in the pipe according to operation information signals from a plurality of gas appliances provided on the downstream side of the shutoff valve. Pipe leakage monitoring device.
  5. 【請求項5】遮断弁の上流側に備えた上流圧力検出手段
    で検出された第1の圧力値と、下流側圧力検出手段で検
    出された第2の圧力値を比較することによって管路内の
    流れを検出する管路内流れ検出手段を備えた請求項1又
    は請求項2記載の配管漏洩監視装置。
    5. The inside of the pipeline by comparing the first pressure value detected by the upstream pressure detecting means provided on the upstream side of the shutoff valve with the second pressure value detected by the downstream pressure detecting means. The pipe leakage monitoring device according to claim 1 or 2, further comprising an in-pipe flow detecting means for detecting the flow of the pipe.
  6. 【請求項6】減圧弁が開いたとき、遮断弁も開口して漏
    洩判定を停止する制御手段を備えた請求項2記載の配管
    漏洩監視装置。
    6. The pipe leakage monitoring device according to claim 2, further comprising control means for opening the shutoff valve and stopping the leakage determination when the pressure reducing valve is opened.
  7. 【請求項7】下流圧力検出手段の圧力変動を学習し、ガ
    ス使用が最も少ない時間帯に漏洩を監視する制御手段を
    備えた請求項1又は請求項2記載の配管漏洩監視装置。
    7. The pipe leakage monitoring device according to claim 1 or 2, further comprising control means for learning pressure fluctuations of the downstream pressure detecting means and monitoring leakage during a time period when gas is least used.
  8. 【請求項8】複数回の漏洩判定を行い、その結果のうち
    全回漏洩と判定したときのみ漏洩警報信号を出力する制
    御手段を備えた請求項1〜7のいずれか1項に記載の配
    管漏洩監視装置。
    8. The pipe according to any one of claims 1 to 7, further comprising control means for performing a plurality of leak determinations and outputting a leak warning signal only when it is determined that all of the leaks have been determined. Leakage monitoring device.
  9. 【請求項9】複数回の漏洩判定を行い、その結果のうち
    1回以上漏洩と判定したとき漏洩警報信号を出力する制
    御手段を備えた請求項1〜7のいずれか1項に記載の配
    管漏洩監視装置。
    9. The pipe according to any one of claims 1 to 7, further comprising control means for performing a plurality of leak determinations and outputting a leak warning signal when it is determined that the leak is one or more of the results. Leakage monitoring device.
  10. 【請求項10】複数個の個別流量計測手段にそれぞれ備
    えた流量情報信号を送信する第1の無線通信手段と、前
    記第1の無線通信手段からの送信信号を受信する第2の
    無線通信を備えた請求項3記載の配管漏洩監視装置。
    10. A first wireless communication means for transmitting a flow rate information signal respectively provided in a plurality of individual flow rate measuring means, and a second wireless communication for receiving a transmission signal from the first wireless communication means. The pipe leakage monitoring device according to claim 3, which is provided.
  11. 【請求項11】瞬時流量計測手段を用いた管路内流れ検
    出手段を備えた請求項1または請求項2記載の配管漏洩
    監視装置。
    11. The pipe leakage monitoring device according to claim 1 or 2, further comprising a pipe flow detection means using an instantaneous flow rate measurement means.
  12. 【請求項12】制御手段で得られた所定の判定結果を送
    信するデータ伝送装置を備えた請求項1または請求項2
    記載の配管漏洩監視装置。
    12. A data transmission device for transmitting a predetermined determination result obtained by the control means, according to claim 1 or 2.
    The described pipe leakage monitoring device.
JP22004495A 1995-08-29 1995-08-29 Piping leak monitoring device Expired - Fee Related JP3579976B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22004495A JP3579976B2 (en) 1995-08-29 1995-08-29 Piping leak monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22004495A JP3579976B2 (en) 1995-08-29 1995-08-29 Piping leak monitoring device

Publications (2)

Publication Number Publication Date
JPH0961284A true JPH0961284A (en) 1997-03-07
JP3579976B2 JP3579976B2 (en) 2004-10-20

Family

ID=16745051

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003221A1 (en) * 1998-07-09 2000-01-20 Heinrich Weingartner Method for detecting possible leaks in duct systems by flow metering
JP2003090777A (en) * 2001-09-20 2003-03-28 Ito Koki Kk Gas leakage detector
KR100878681B1 (en) * 2002-12-10 2009-01-13 주식회사 포스코 An Apparatus for Controlling Driving Air Pressure for Pneumatic Valve
KR200445590Y1 (en) * 2009-05-12 2009-08-14 주식회사 에스티모빅 Abnormal condition monitoring apparatus for filling station
CN103712755A (en) * 2013-06-14 2014-04-09 清华大学 Test device and method for simulating natural gas leakage in soil
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US9841122B2 (en) 2014-09-09 2017-12-12 Honeywell International Inc. Gas valve with electronic valve proving system
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
CN109211478A (en) * 2018-07-17 2019-01-15 中石化石油工程技术服务有限公司 A kind of experimental system and method for simulation high sulfur-containing natural gas leakage environment
US10203049B2 (en) 2014-09-17 2019-02-12 Honeywell International Inc. Gas valve with electronic health monitoring
US10215291B2 (en) 2013-10-29 2019-02-26 Honeywell International Inc. Regulating device
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module
US10697632B2 (en) 2011-12-15 2020-06-30 Honeywell International Inc. Gas valve with communication link
US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003221A1 (en) * 1998-07-09 2000-01-20 Heinrich Weingartner Method for detecting possible leaks in duct systems by flow metering
JP2003090777A (en) * 2001-09-20 2003-03-28 Ito Koki Kk Gas leakage detector
KR100878681B1 (en) * 2002-12-10 2009-01-13 주식회사 포스코 An Apparatus for Controlling Driving Air Pressure for Pneumatic Valve
KR200445590Y1 (en) * 2009-05-12 2009-08-14 주식회사 에스티모빅 Abnormal condition monitoring apparatus for filling station
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
US10697632B2 (en) 2011-12-15 2020-06-30 Honeywell International Inc. Gas valve with communication link
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US10851993B2 (en) 2011-12-15 2020-12-01 Honeywell International Inc. Gas valve with overpressure diagnostics
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
CN103712755B (en) * 2013-06-14 2016-06-29 清华大学 A kind of simulate the assay device that natural gas leaks in soil
CN103712755A (en) * 2013-06-14 2014-04-09 清华大学 Test device and method for simulating natural gas leakage in soil
US10215291B2 (en) 2013-10-29 2019-02-26 Honeywell International Inc. Regulating device
US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
US9841122B2 (en) 2014-09-09 2017-12-12 Honeywell International Inc. Gas valve with electronic valve proving system
US10203049B2 (en) 2014-09-17 2019-02-12 Honeywell International Inc. Gas valve with electronic health monitoring
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance
US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module
CN109211478A (en) * 2018-07-17 2019-01-15 中石化石油工程技术服务有限公司 A kind of experimental system and method for simulation high sulfur-containing natural gas leakage environment

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