JPS61137038A - Gas blocking control apparatus - Google Patents

Gas blocking control apparatus

Info

Publication number
JPS61137038A
JPS61137038A JP25740084A JP25740084A JPS61137038A JP S61137038 A JPS61137038 A JP S61137038A JP 25740084 A JP25740084 A JP 25740084A JP 25740084 A JP25740084 A JP 25740084A JP S61137038 A JPS61137038 A JP S61137038A
Authority
JP
Japan
Prior art keywords
gas
time
information
blocking
flow rate
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
JP25740084A
Other languages
Japanese (ja)
Other versions
JPH0421919B2 (en
Inventor
Teruaki Iijima
飯島 輝明
Tokuyuki Fukuda
福田 徳幸
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.)
Fuji Electric Co Ltd
Fuji Facom Corp
Original Assignee
Fuji Electric Co Ltd
Fuji Facom 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 Fuji Electric Co Ltd, Fuji Facom Corp filed Critical Fuji Electric Co Ltd
Priority to JP25740084A priority Critical patent/JPS61137038A/en
Publication of JPS61137038A publication Critical patent/JPS61137038A/en
Publication of JPH0421919B2 publication Critical patent/JPH0421919B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2876Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Safety Valves (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

PURPOSE:To reduce the number of blocking times while attaining safety, by changing the time reaching the blocking of gas from a time, when an accident of gas from a time, when an accident was generated, corresponding to a time zone and the flow amount of supplied gas when the blocking of gas is performed on the basis of a gas leakage detection signal. CONSTITUTION:When gas leakage is generated in a gas instrument 3, a gas leakage detector 1 is operated to send out gas leakage information to an operation circuit 23. Because gas flow amount information is always sent to the operation circuit 23 from a flowmeter 5, the time for blocking gas is operated from the gas flow amount information and time information to perform the setting of the time of a timer 24. The timer 24 applies gas blocking information to blocking valve 4 after the set time was elapsed. At this time, because the operation circuit 23 monitors the time information from a clock circuit 25, said circuit 23 performes different operation corresponding to a time zone.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、ガス洩れ検知器からのガス洩れ情報により
、遮断弁を駆動してガス遮断を行なうガス遮断制御装置
に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas cutoff control device that shuts off gas by driving a cutoff valve based on gas leakage information from a gas leakage detector.

〔従来の技術〕[Conventional technology]

都市ガス、プロシくンガス等の燃料用ガスは、ガス洩れ
が起きるとガス中毒や爆発事故の原因と々るため、ガス
洩れ警報器によってこれを検知し、ブザー等で知らせる
方法や、単に警報を発するばかりでなく、積極的にガス
遮断弁と連動させて供給ガスを遮断する方法がとられて
いる。このような場合に、ガス洩れを検知する検知器と
しては、半導体式や触媒式のものが広く用いられている
If a gas leak occurs with fuel gases such as city gas or procyon gas, it can cause gas poisoning or explosions, so there are ways to detect this with a gas leak alarm and notify with a buzzer, or simply to issue an alarm. In addition to emitting gas, there is a method of actively shutting off the supply gas in conjunction with a gas cutoff valve. In such cases, semiconductor-type or catalytic-type detectors are widely used to detect gas leaks.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

ところが、これらのセンナは炭化水素(CO)を検知す
るものであるため、都市ガス、プロパンガス以外の炭化
水素、例えば酒類に含まれるアルコール類にも感じ、従
って、ガス洩れ検知器が信号を発したとしても、必ずし
もガス洩れとは断定し難い場合がある。
However, since these senna detect hydrocarbons (CO), they also detect hydrocarbons other than city gas and propane gas, such as alcohol contained in alcoholic beverages, and therefore gas leak detectors may not emit a signal. Even if it does, it may be difficult to conclude that it is a gas leak.

また、ガス洩れ検知信号によりガス遮断弁を動作させる
方式のものでは、一般にガス検知器と遮断弁とが連動す
る形式となっていて、ガス洩れ信号が発せられると直ち
にガス遮断が行なわれるようになっている。しかしなが
ら、゛ガス洩れが生じてセンサが働いたとしても、例え
ばガス器具のノくイロットバーナの立ち消えのような場
合は、単に窓を開けるなどの換気処置をすれば良く、必
ずしも供給ガスの遮断まで行なう必要はない。つまり、
とのよプな場合にもガス遮断を行なうようにすると、そ
の後の適宜な時期にそれ迄に使用されていたガス器具の
すべてについて再点火などの操作が必要となって煩わし
い。一方、風呂釜などの大型ガス器具のメインバーナが
立ち消えになり九場会等に、ガス洩れ検知器が動作して
信号が発せられた場合は、直ちにガス遮断を行なわなけ
ればならない。また、ガス洩れの原因は同じであっても
、昼間と深夜とではその対応の仕方が異なることが考え
られる。つまり、ガス洩れが生じた場合にも、直ちにガ
スを遮断しなければならない場合と、そうでない場合と
が存在することがわかる。
In addition, in systems that operate the gas cutoff valve in response to a gas leak detection signal, the gas detector and the cutoff valve are generally linked, so that the gas is shut off immediately when the gas leakage signal is issued. It has become. However, even if a gas leak occurs and the sensor is activated, for example, if a gas appliance's pilot burner goes out, it is sufficient to simply open a window or take ventilation measures, and it is not necessary to cut off the supply gas. There's no need to do it. In other words,
If the gas is shut off even in such a severe case, it will be cumbersome since it will be necessary to perform operations such as re-igniting all the gas appliances that have been in use at an appropriate time thereafter. On the other hand, if the main burner of a large gas appliance such as a bathtub goes out and a gas leak detector is activated and a signal is issued, the gas must be shut off immediately. Furthermore, even if the cause of a gas leak is the same, the way to deal with it during the day and late at night may be different. In other words, even when a gas leak occurs, there are cases in which the gas must be shut off immediately and cases in which it is not necessary.

〔問題点を解決するための手段および作用〕この発明は
、ガス洩れ検知信号にもとづいてガス遮断を行な5場舎
に、そのときの時刻または時間帯(朝、昼または夜半か
等)と供給ガス流量とに応じて事故発生時からガス遮断
に至る迄の時間を変えることにより、安全を図りつ〜遮
断回数を低減するようにしたものである。
[Means and effects for solving the problem] This invention shuts off the gas based on the gas leak detection signal and transmits information to five buildings based on the time or time of day (morning, noon, midnight, etc.). By changing the time from the occurrence of an accident to the gas shutoff depending on the supply gas flow rate, safety is ensured and the number of shutoffs is reduced.

〔発明の実施例〕[Embodiments of the invention]

第1図はこの発明の実施例を示す構成図、第1人図は演
算装置の具体例を示すブロック図、第2図は演算装置の
動作を説明するだめの説明図である。第1図において、
1はガス洩れ検知器、2は演算装置、3はガス器具、4
は遮断弁、5は流量計(ガスメータ)である。なお、ガ
ス洩れ検知器1、遮断弁4および流量計5としては、そ
れぞれ従来から使用されている接点出力付ガス洩れ検知
器、電気パルス入力遮断弁および接点付ガスメータをそ
のま〜使用することができる。したがって、流量情報は
所定流量毎に出力される接点情報として、また、ガス洩
れ情報はガス洩れが発生しくガス洩れ検知器1が動作し
たときにオンとなる接点信号情報として、それぞれ演算
装置2に入力される。演算装置2は、例えば第1A図に
示されるように、上記の如き流量情報より時々刻々の流
量を演算するパルスカウンタ21、演算された流量を記
憶するメモリ22、時刻情報を出力する時計回路25、
ガス洩れ情報が発車したときのガス流量情報と時刻情報
とからガス遮断条件を演算する演算回路26、および演
算回路25から与えられるガス遮断のための時間情報を
時計回路25からの時間信号により計測してガス遮断情
報を出力するタイマ24等より構成される。なお、接点
のオン。
FIG. 1 is a block diagram showing an embodiment of the present invention, the first person's figure is a block diagram showing a specific example of an arithmetic device, and FIG. 2 is an explanatory diagram for explaining the operation of the arithmetic device. In Figure 1,
1 is a gas leak detector, 2 is a computing device, 3 is a gas appliance, 4
5 is a shutoff valve, and 5 is a flow meter (gas meter). In addition, as the gas leak detector 1, the cutoff valve 4, and the flow meter 5, conventionally used gas leak detectors with contact output, electric pulse input cutoff valves, and gas meters with contacts can be used as they are. can. Therefore, the flow rate information is sent to the computing device 2 as contact information that is output at every predetermined flow rate, and the gas leak information is sent to the computing device 2 as contact signal information that is turned on when a gas leak occurs and the gas leak detector 1 is activated. is input. The calculation device 2 includes, for example, as shown in FIG. 1A, a pulse counter 21 that calculates the flow rate from time to time based on the above flow rate information, a memory 22 that stores the calculated flow rate, and a clock circuit 25 that outputs time information. ,
A calculation circuit 26 calculates gas cutoff conditions from gas flow rate information and time information when the gas leak information starts, and time information for gas cutoff given from the calculation circuit 25 is measured using a time signal from the clock circuit 25. It is composed of a timer 24 and the like that outputs gas cutoff information. In addition, the contact is on.

オフによる流量情報から流量を計算する方法としては、
単位時間内に接点のオン、オフが何回生じるかをカウン
トする方法、接点のオンとオンまたはオフとオフの各間
隔を基準パルスにてカウントする方法等があるが、いず
れにしても、カウンタ21と時計回路25から出力され
る時間基準パルスとによって流シを計測することができ
る。したがって、ガス器具3においてガス洩れが発生す
ると、ガス洩れ検知器1が動作し、演算回路23にガス
洩れ情報が送出される。このとき、演算回路23には、
流量計(ガスメータ)5より常時ガス流量情報が送出さ
れているので、演算回路23はガス流量情報と時刻情報
とからガス遮断のための時間を演算し、タイマ240時
間設定を行なう。
The method of calculating the flow rate from the flow rate information due to OFF is as follows.
There are methods to count how many times a contact turns on and off within a unit time, and a method to count each interval between on and off or off and off using a reference pulse, but in any case, counter 21 and the time reference pulse output from the clock circuit 25, the flow can be measured. Therefore, when a gas leak occurs in the gas appliance 3, the gas leak detector 1 operates and gas leak information is sent to the arithmetic circuit 23. At this time, the arithmetic circuit 23 has
Since the gas flow rate information is constantly being sent out from the flow meter (gas meter) 5, the calculation circuit 23 calculates the time for gas cutoff from the gas flow rate information and time information, and sets the timer 240 hours.

タイマ24は、この設定された時間経過後に遮断弁4に
対してガス遮断情報を与えるので、これにより、ガスの
供給が遮断される。このとき、演算回路23は、時計回
路25からの時刻情報を監視しているので、ガス洩れが
検知されたときのガス流量情報が同じでらっても、例え
ば昼間と深夜とでは異なった演算をすることが可能とな
る。これは、昼間と夜間とでは使用するガス器具の種類
が異なっていたり、あるいは同じガス器具でもその・使
用形態が異なることが考えられるので、これらに対処す
るためである。したがって、この場合の時刻情報として
は、秒や分単位の細かいものでな(、時間または時間帯
情報で充分である。
The timer 24 provides gas cutoff information to the cutoff valve 4 after the set time has elapsed, so that the gas supply is cut off. At this time, the arithmetic circuit 23 monitors the time information from the clock circuit 25, so even if the gas flow rate information when a gas leak is detected is the same, different calculations may be made during the daytime and late at night, for example. It becomes possible to do this. This is to deal with the fact that the types of gas appliances used during the day and at night may be different, or that the same gas appliance may be used in different ways. Therefore, the time information in this case is not detailed in seconds or minutes (hour or time zone information is sufficient).

次に、具体的な例について第2図を参照して説明する。Next, a specific example will be explained with reference to FIG.

なお、同図において、tdはガス洩れ発生(検知)時刻
、t、はガス遮断時刻をそれぞれ示している。
In the figure, td indicates the gas leak occurrence (detection) time, and t indicates the gas cutoff time.

同図(A)は、ガス流量の急増と殆んど同時にガス洩れ
が発生した場合で、例えば大型ガス器具が点火不調の場
合等に生じる現象である。この場合は直ちにガス遮断を
行なうべく、時刻tdよりt1時間後の時刻t、におい
てガス遮断を行なう。
FIG. 2A shows a case where a gas leak occurs almost simultaneously with a sudden increase in the gas flow rate, which is a phenomenon that occurs when, for example, a large gas appliance malfunctions in ignition. In this case, in order to immediately shut off the gas, the gas is shut off at time t, which is t1 hours after time td.

同図(B)は(A)とは逆に、大型ガス器具の消火と略
同時にそのパイロットバーナ等が消えた場合等に生じる
現象である。この場合は、まず警報を発し、一定時間(
t2)が経過しても警報が停止しない場合(ガス洩れ情
報がなくならない場合)に始めてガス遮断を行なうよう
にする。したがって、一定時間内に警報が停止すれば、
ガス遮断は行なわれないことになる。また、同図(C)
は、例えば大型ガス器具の火が途中で立ち消えになった
場合等に生ずる現象で、この場合は非常に危険であるの
で、直ちに(正確には15時間後)ガス遮断を行なう。
Contrary to (A), (B) in the same figure shows a phenomenon that occurs when a pilot burner or the like of a large gas appliance goes out at approximately the same time as the fire is extinguished. In this case, first an alarm is issued and a certain period of time (
The gas is shut off only when the alarm does not stop even after t2) (when the gas leak information does not disappear). Therefore, if the alarm stops within a certain period of time,
There will be no gas cutoff. Also, the same figure (C)
This is a phenomenon that occurs, for example, when the fire of a large gas appliance goes out midway through.In this case, it is extremely dangerous, so the gas must be shut off immediately (after 15 hours to be exact).

さらに、同図(D)は、例えばパイロットバーナー等の
少流量のガス使用器具が消火した場合などに生じるもの
で、この場合は同図(B)の場合と同様に、まず警報を
発し、一定時間(t4)が経過しても警報が停止しない
場合にだゆ、ガス遮断を行なう。
Furthermore, as shown in (D) in the same figure, this occurs when, for example, a pilot burner or other equipment that uses a small amount of gas goes out. In this case, as in the case in (B), an alarm is first issued and the If the alarm does not stop even after the time (t4) has elapsed, the gas is shut off.

なお、上記の各時間t1〜t4が演算装置2によって演
算されるのであるが、この時間t1r t2+t3およ
びt4が、例えば昼間でのものと仮定すれば・夜間では
t1′・t2′・t s /およびt 4/の如くそれ
ぞれ変更されることになる。
Incidentally, each of the above-mentioned times t1 to t4 is calculated by the arithmetic unit 2, and if it is assumed that the times t1r, t2+t3 and t4 are, for example, during the daytime, then t1', t2', and ts/at night. and t4/, respectively.

〔発明の効果〕〔Effect of the invention〕

この発明によれば、ガス洩れが検知されたとき、ガス流
量情報と時刻情報とに応じてガス遮断を行なう迄の時間
を変えるようにしたので、ガス洩れによる災害が確実に
防止されるばかりでなく、ガス遮断回数が極力減らされ
ることからガス遮断後の後処理の煩雑さから解放される
利点がもたらされるものである。
According to this invention, when a gas leak is detected, the time until the gas is shut off is changed according to the gas flow rate information and time information, so that disasters caused by gas leaks can be reliably prevented. Since the number of times the gas is shut off is reduced as much as possible, there is an advantage of being freed from the complexity of post-processing after the gas shutoff.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の実施例を示す構成図、第1A図は第
1図における演算装置の具体例を示すブロン′り図、第
2図は第1図または第1A図の動作を説明するための説
明図である。 符号説明 1・・・・・・ガス洩れ検知器、2・・・・・・演算装
置、3・・・・・・ガス器具、4・・・・・・ガス遮断
弁、5・・・・・・流量計、21・・・・・・カウンタ
、22・・・・・・メモリ、23・・・・・・演算回路
、24・・・・・・タイマ、25・・・・・・時計回路
。 代理人 弁理士 並 木 昭 夫 代理人 弁理士 松 崎    清 町 1 図 第1A 図 (A) (C) dflj +Na図 (D)
FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 1A is a bronze diagram showing a specific example of the arithmetic unit in FIG. 1, and FIG. 2 explains the operation of FIG. 1 or FIG. 1A. FIG. Description of symbols 1... Gas leak detector, 2... Arithmetic device, 3... Gas appliance, 4... Gas cutoff valve, 5... ...Flowmeter, 21...Counter, 22...Memory, 23...Arithmetic circuit, 24...Timer, 25...Clock circuit. Agent Patent Attorney Akio Namiki Agent Patent Attorney Kiyomachi Matsuzaki 1 Figure 1A Figure (A) (C) dflj +Na Figure (D)

Claims (1)

【特許請求の範囲】[Claims] ガス器具に供給されるガス流量を計測するガス流量計と
、ガス器具からのガス洩れを検知するガス洩れ検知器と
、ガス洩れが検知されたときガス器具に供給されるガス
を遮断する遮断弁と、ガス洩れが検知されたときその時
点の少なくとも時間帯情報と前記ガス流量計を介して得
られるガス流量情報とにもとづいて前記遮断弁を閉じる
迄の時間を演算する演算装置とを備え、該演算出力によ
つてガス遮断を行なうことを特徴とするガス遮断制御装
置。
A gas flow meter that measures the gas flow rate supplied to gas appliances, a gas leak detector that detects gas leaks from gas appliances, and a shutoff valve that shuts off the gas supplied to gas appliances when a gas leak is detected. and a calculation device that calculates the time until the shutoff valve is closed based on at least time zone information and gas flow rate information obtained via the gas flow meter at the time when a gas leak is detected, A gas cutoff control device characterized in that a gas cutoff is performed based on the calculation output.
JP25740084A 1984-12-07 1984-12-07 Gas blocking control apparatus Granted JPS61137038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25740084A JPS61137038A (en) 1984-12-07 1984-12-07 Gas blocking control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25740084A JPS61137038A (en) 1984-12-07 1984-12-07 Gas blocking control apparatus

Publications (2)

Publication Number Publication Date
JPS61137038A true JPS61137038A (en) 1986-06-24
JPH0421919B2 JPH0421919B2 (en) 1992-04-14

Family

ID=17305850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25740084A Granted JPS61137038A (en) 1984-12-07 1984-12-07 Gas blocking control apparatus

Country Status (1)

Country Link
JP (1) JPS61137038A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6449927A (en) * 1987-08-20 1989-02-27 Matsushita Electric Ind Co Ltd Water leak detecting device
JPS6449928A (en) * 1987-08-20 1989-02-27 Matsushita Electric Ind Co Ltd Water leak detecting device
JPH0242194U (en) * 1988-09-16 1990-03-23
JPH03287040A (en) * 1990-04-03 1991-12-17 Matsushita Electric Ind Co Ltd Leak detecting device
JP2008096254A (en) * 2006-10-11 2008-04-24 Ricoh Elemex Corp Gas flowmeter
JP2011095249A (en) * 2009-09-30 2011-05-12 Panasonic Electric Works Sunx Co Ltd Device for detecting leakage of liquid
CN106205064A (en) * 2016-08-29 2016-12-07 四川启昌管道工程有限责任公司 A kind of natural gas leaking detection alarm device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6449927A (en) * 1987-08-20 1989-02-27 Matsushita Electric Ind Co Ltd Water leak detecting device
JPS6449928A (en) * 1987-08-20 1989-02-27 Matsushita Electric Ind Co Ltd Water leak detecting device
JPH0242194U (en) * 1988-09-16 1990-03-23
JPH03287040A (en) * 1990-04-03 1991-12-17 Matsushita Electric Ind Co Ltd Leak detecting device
JP2008096254A (en) * 2006-10-11 2008-04-24 Ricoh Elemex Corp Gas flowmeter
JP2011095249A (en) * 2009-09-30 2011-05-12 Panasonic Electric Works Sunx Co Ltd Device for detecting leakage of liquid
CN106205064A (en) * 2016-08-29 2016-12-07 四川启昌管道工程有限责任公司 A kind of natural gas leaking detection alarm device

Also Published As

Publication number Publication date
JPH0421919B2 (en) 1992-04-14

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