JPH0451656U - - Google Patents
Info
- Publication number
- JPH0451656U JPH0451656U JP9309290U JP9309290U JPH0451656U JP H0451656 U JPH0451656 U JP H0451656U JP 9309290 U JP9309290 U JP 9309290U JP 9309290 U JP9309290 U JP 9309290U JP H0451656 U JPH0451656 U JP H0451656U
- Authority
- JP
- Japan
- Prior art keywords
- gas
- alarm
- gas leak
- circuit
- terminals
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Regulation And Control Of Combustion (AREA)
- Emergency Alarm Devices (AREA)
Description
第１図は本考案の一実施例に係わるガス漏れ警
報遮断装置の基本構成を示すブロツク図、第２図
は上記装置に用いたガス遮断器の具体的構成を示
す回路構成図、第３図は上記装置に用いたガス漏
れ警報器の具体的構成を示すブロツク図、第４図
は上記装置の動作を説明するための信号波形図で
ある。
１……ガス漏れ警報器、２……ガス遮断器、３
……ガス遮断弁、２１……遮断弁駆動コイル、２
２……メータパルス接点（第１のスイツチ）、２
３……第１のダイオード、２４……弁アンサ接点
（第２のスイツチ）、２５……第２のダイオード
、３２……ガスセンサ、３４……ガス漏れ検出回
路、３５……判定回路、３６……信号発生回路、
４３……ブザー回路、４４……ランプ回路。
FIG. 1 is a block diagram showing the basic configuration of a gas leak alarm shutoff device according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing the specific configuration of a gas circuit breaker used in the above device, and FIG. 3 4 is a block diagram showing a specific configuration of a gas leak alarm used in the above device, and FIG. 4 is a signal waveform diagram for explaining the operation of the above device. 1... Gas leak alarm, 2... Gas circuit breaker, 3
...Gas cutoff valve, 21...Shutoff valve drive coil, 2
2...meter pulse contact (first switch), 2
3...First diode, 24...Valve answer contact (second switch), 25...Second diode, 32...Gas sensor, 34...Gas leak detection circuit, 35...Judgment circuit, 36... ...signal generation circuit,
43...Buzzer circuit, 44...Lamp circuit.
Claims (1)
警報器と、このガス漏れ警報器から供給される信
号に応じてガスの供給を遮断するガス遮断器とを
備えたガス漏れ警報遮断装置において、 前記ガス遮断器は、前記ガス漏れ警報器と接続
される２端子間に接続され、該端子間の電圧が所
定値以上になるとガス遮断弁を閉じる遮断弁駆動
コイルと、ガスが供給状態にあるときオンするス
イツチと、このスイツチを介して前記２端子間に
接続されたダイオードとからなり、 前記ガス漏れ警報器は、ガスセンサの出力に基
づきガス漏れを検出するガス漏れ検出回路と、前
記ガス遮断器の２端子間の電圧に基づきガス供給
状態を検出するガス供給検出回路と、前記各検出
回路の検出出力に基づき、ガス漏れの有無及びガ
ス供給の有無を判定する判定回路と、この判定回
路の判定結果に応じて警報を発する警報発生回路
と、通常時は前記遮断弁駆動コイルのしきい値よ
りもピーク値が低い交流パルスを発生し、前記判
定回路によりガス漏れ及びガス供給が共に有りと
判定された時は、前記遮断弁駆動コイルのしきい
値よりもピーク値が高い交流パルスを発生し、該
交流パルスを前記２端子間に供給する信号発生回
路とからなることを特徴とするガス漏れ警報遮断
装置。 (2) ガス漏れを検出して警報を発するガス漏れ
警報器と、このガス漏れ警報器から供給される信
号に応じてガスの供給を遮断するガス遮断器とを
備えたガス漏れ警報遮断装置において、 前記ガス遮断器は、前記ガス漏れ警報器と接続
される２端子間に接続され、該端子間の電圧が所
定値以上になるとガス遮断弁を閉じる遮断弁駆動
コイルと、ガスが供給状態にあるときオンする第
１のスイツチと、このスイツチを介して前記２端
子間に接続された第１のダイオードと、ガス遮断
弁が閉じられたときオンする第２のスイツチと、
この第２のスイツチを介して前記２端子間に接続
された第１のダイオードとは逆極性の第２のダイ
オードとからなり、 前記ガス漏れ警報器は、ガスセンサの出力に基
づきガス漏れを検出する漏れ検出回路と、前記ガ
ス遮断器の２端子間の電圧に基づきガス供給状態
を検出するガス供給検出回路と、前記２端子間の
電圧に基づきガス遮断弁の開閉状態を検出する遮
断弁開閉検出回路と、前記各検出回路の検出出力
に基づき、ガス漏れ、ガス供給の有無及び遮断弁
の開閉状態を判定する判定回路と、この判定回路
の判定結果に応じて警報を発する警報発生回路と
、通常時は前記遮断弁駆動コイルのしきい値より
もピーク値が低い交流パルスを発生し、前記判定
回路によりガス漏れ及びガス供給が共に有りと判
定された時は、前記遮断弁駆動コイルのしきい値
よりもピーク値が高い交流パルスを発生し、該交
流パルスを前記２端子間に供給する信号発生回路
とからなることを特徴とするガス漏れ警報遮断装
置。[Scope of claim for utility model registration] (1) A gas leak alarm that detects a gas leak and issues an alarm, and a gas circuit breaker that cuts off the gas supply in response to a signal supplied from the gas leak alarm. In the gas leak alarm shutoff device, the gas circuit breaker is connected between two terminals connected to the gas leak alarm, and has a shutoff valve drive that closes the gas shutoff valve when the voltage between the terminals reaches a predetermined value or higher. The gas leak alarm includes a coil, a switch that is turned on when gas is being supplied, and a diode connected between the two terminals via the switch, and the gas leak alarm detects gas leaks based on the output of the gas sensor. a gas leak detection circuit; a gas supply detection circuit that detects the gas supply state based on the voltage between two terminals of the gas circuit breaker; and a gas supply detection circuit that detects the presence or absence of a gas leak and the presence or absence of gas supply based on the detection output of each of the detection circuits. a determination circuit that makes a determination; an alarm generation circuit that issues an alarm in accordance with the determination result of the determination circuit; When it is determined that there is both a gas leak and a gas supply, an AC pulse having a peak value higher than a threshold value of the cutoff valve driving coil is generated, and a signal is generated to supply the AC pulse between the two terminals. A gas leak alarm cutoff device characterized by comprising a circuit. (2) In a gas leak alarm shut-off device that includes a gas leak alarm that detects a gas leak and issues an alarm, and a gas circuit breaker that shuts off the supply of gas in response to a signal supplied from the gas leak alarm. , the gas circuit breaker is connected between two terminals connected to the gas leak alarm, and a shutoff valve driving coil that closes the gas shutoff valve when the voltage between the terminals exceeds a predetermined value; a first switch that is turned on at a certain time, a first diode connected between the two terminals via this switch, and a second switch that is turned on when the gas cutoff valve is closed;
The gas leak alarm includes a second diode having a polarity opposite to that of the first diode connected between the two terminals via the second switch, and the gas leak alarm detects a gas leak based on the output of the gas sensor. a leak detection circuit; a gas supply detection circuit that detects the gas supply state based on the voltage between the two terminals of the gas circuit breaker; and a cutoff valve open/close detection that detects the open/closed state of the gas cutoff valve based on the voltage between the two terminals. a determination circuit that determines gas leakage, the presence or absence of gas supply, and the open/closed state of a shutoff valve based on the detection output of each of the detection circuits; and an alarm generation circuit that issues an alarm in accordance with the determination result of the determination circuit. Normally, an AC pulse whose peak value is lower than the threshold value of the cutoff valve drive coil is generated, and when the judgment circuit determines that there is both a gas leak and a gas supply, the cutoff valve drive coil is activated. A gas leak alarm cutoff device comprising a signal generating circuit that generates an alternating current pulse having a peak value higher than a threshold value and supplies the alternating current pulse between the two terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990093092U JP2545606Y2 (en) | 1990-09-06 | 1990-09-06 | Gas leak alarm shutoff device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990093092U JP2545606Y2 (en) | 1990-09-06 | 1990-09-06 | Gas leak alarm shutoff device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0451656U true JPH0451656U (en) | 1992-04-30 |
| JP2545606Y2 JP2545606Y2 (en) | 1997-08-25 |
Family
ID=31830043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990093092U Expired - Lifetime JP2545606Y2 (en) | 1990-09-06 | 1990-09-06 | Gas leak alarm shutoff device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2545606Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60131099U (en) * | 1984-02-07 | 1985-09-02 | 横河電機株式会社 | 2 wire transmitter |
| JPH0242184U (en) * | 1988-09-12 | 1990-03-23 |
-
1990
- 1990-09-06 JP JP1990093092U patent/JP2545606Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60131099U (en) * | 1984-02-07 | 1985-09-02 | 横河電機株式会社 | 2 wire transmitter |
| JPH0242184U (en) * | 1988-09-12 | 1990-03-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2545606Y2 (en) | 1997-08-25 |
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