JPS591883A - Gas shut off device - Google Patents
Gas shut off deviceInfo
- Publication number
- JPS591883A JPS591883A JP11021182A JP11021182A JPS591883A JP S591883 A JPS591883 A JP S591883A JP 11021182 A JP11021182 A JP 11021182A JP 11021182 A JP11021182 A JP 11021182A JP S591883 A JPS591883 A JP S591883A
- Authority
- JP
- Japan
- Prior art keywords
- solenoid valve
- output
- signal
- resetting
- cutoff
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、カスの流量を開側して、種々の原因によって
生するカス爆発を未然に防止するだめのガス遮断装置に
関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a gas cutoff device for preventing scum explosions caused by various causes by opening the flow rate of scum.
従来例の構成とその問題点
ガス爆発はガス管とガス器具とを接続するゴムホースの
外れ、ひび割れ等によるガスの異常流出とか、ガス器具
の長時間使用により発生する酸欠状態に起因する生ガス
の異常流出とかがある。これら要因を、ガス爆発に至る
前にとらえ、ガス流路中に設けた遮断手段によりガスの
流れを遮断することにより、爆発を未然に防ぐことがで
きる。Conventional structure and its problems Gas explosions occur due to abnormal gas leakage due to detachment or cracking of the rubber hose that connects the gas pipe and gas appliance, or raw gas caused by oxygen deficiency caused by long-term use of gas appliances. There is an abnormal outflow of Explosions can be prevented by detecting these factors before they lead to a gas explosion and blocking the gas flow using a blocking means provided in the gas flow path.
この種ガス遮断装置としては第3図に示す構成のものが
ある。第3図で、1はガスメーク7に取付けられガスの
流量を検出する流量センサである。As this type of gas cutoff device, there is one having a configuration shown in FIG. In FIG. 3, reference numeral 1 denotes a flow rate sensor attached to the gas make 7 to detect the flow rate of gas.
このセンサは、例えば、ガスメータを構成するダイアフ
ラム又はダイアフラムの往復動を指示部に伝達するリン
ク機構の一部に設けた磁石と、この磁石の位置を検出す
るリードスイッチとを組合せたものがある。このリード
スイッチのオンから次のオンまでの時間を計測すること
によりガスの流量を知ることができる。3は、ガス流路
中に設けた磁石と電磁コイルとを組合せた自己保持手動
復帰型電磁弁で、制御部6からの遮断信号により、ガス
流路を遮断する。この電磁弁は、磁石の力によって開状
態を自己保持するようになっており、装置電源としての
電池の消耗を少なくし7ている。This sensor includes, for example, a combination of a magnet provided in a diaphragm constituting a gas meter or a part of a link mechanism that transmits the reciprocating motion of the diaphragm to an indicator, and a reed switch that detects the position of this magnet. The gas flow rate can be determined by measuring the time from when the reed switch is turned on to when it is turned on again. Reference numeral 3 denotes a self-holding manual return type solenoid valve that combines a magnet and an electromagnetic coil provided in the gas flow path, and shuts off the gas flow path in response to a cutoff signal from the control unit 6. This electromagnetic valve is designed to self-maintain in an open state by the force of a magnet, thereby reducing consumption of the battery used as the device's power source.
また、遮断動作は、その電磁コイルに電流を流すことに
よって生ずる電磁力が先の磁石により弁を開状態に保持
する力に打勝つことによって、自己保持状態が解除され
ることにより行なわれる。このようにして一度遮断状態
になれば、磁石の力だけでは開状態になることはなく、
もはや電流を流す必要はない。開状態にするためには、
手動で弁を開け、磁石の力で保持できる位置にする。制
御部6は流量センサ1からの信号を受け、所定の処理手
続きに従がってこの信号を処理し、遮断すべきか否かを
判定し、もしも遮断条件を満足していれば、遮断信号を
電磁弁3に対して出力する。処理手続きとしては、例え
ば、流電センサ1で検出する流計が、一定値のままで所
定時間を越えて流れているか否かを判定する、もしも越
えていれは、その流暇相当の器具の通常使用時間よりも
長く使われていることになり、このような状態は何らか
の異常を示すものとして遮断信号を出力する、この種装
置では、自己保持手動復帰型電磁弁を使用するから、制
御部が遮断信号出力後、弁が遮断状態か否かを制御部に
認識させる必要がある。Further, the shutoff operation is performed when the self-holding state is released as the electromagnetic force generated by passing a current through the electromagnetic coil overcomes the force of the magnet holding the valve in the open state. In this way, once it is in the cutoff state, it will not be turned into the open state by the force of the magnet alone.
There is no longer a need for current to flow. To open the
Open the valve manually and position it so that it can be held by the magnetic force. The control unit 6 receives the signal from the flow rate sensor 1, processes this signal according to a predetermined processing procedure, determines whether or not to shut off, and if the shut-off conditions are satisfied, issues a shut-off signal. Output to solenoid valve 3. As a processing procedure, for example, it is determined whether or not the current meter detected by the current sensor 1 has been flowing at a constant value for a predetermined period of time. This means that the device has been used for a longer period of time than the normal operating time, and such a condition indicates some abnormality and outputs a shut-off signal.Since this type of device uses a self-holding manual return type solenoid valve, the control unit After the valve outputs the shutoff signal, it is necessary to make the control unit recognize whether the valve is in the shutoff state or not.
このため、例えば電磁弁の可動部に磁石を設け、電磁弁
が開状態でオン、閉状態でオフするような位置にリード
スイッチを設け、このリードスイッチのオンオフにより
、弁の開閉状態を制御部に認識させることが従来行なわ
れていた。これを今少し詳しく第4図を用いて説明する
。2は制御回路で、流鼠センザ1のリードスイッチのオ
ンオフを抵抗2人で電圧のu HIZ It Lo”信
号に変換する。For this reason, for example, a magnet is installed in the movable part of a solenoid valve, and a reed switch is installed at a position where the solenoid valve is turned on when it is open and turned off when it is closed. Conventionally, it has been done to make the This will now be explained in more detail using FIG. 4. 2 is a control circuit which converts the on/off state of the reed switch of the mouse sensor 1 into a voltage "u HIZ It Lo" signal using two resistors.
この信号をマイクロコンピュータ2Bが受け、プログラ
ムとして記憶している所定の処理手続きに従って処理す
る。もしも遮断条件を満足すれば、マイクロコンピュー
タ2Bは遮断信号を出力し、これによりトランジスタ2
Cがオンし、電磁弁3の電磁コイル3Cに電流が流れ、
カス流路が遮断される。4′は、復帰検出回路で、リー
ドスイッチ4Cのオンオフを抵抗4Bで電圧のl Hi
ll 、 II防°゛信号に変換し、マイクロコンピュ
ータ2Bに入力する。遮断状態ではリードスイッチ4C
がオフで、復帰検出回路4′の出力は゛石″である。も
しも手動復帰操作により電磁弁3が再び開状態になれば
、リードスイッチ4Cがオンして、復帰検出回路4′出
力は゛訪″ となり、復帰信号としてマイクロコンビ−
1−夕2Bに入力され、マイクロコンビj。The microcomputer 2B receives this signal and processes it according to a predetermined processing procedure stored as a program. If the cutoff condition is satisfied, the microcomputer 2B outputs a cutoff signal, which causes the transistor 2
C turns on, current flows through the electromagnetic coil 3C of the electromagnetic valve 3,
The waste flow path is blocked. 4' is a return detection circuit, which turns on and off the reed switch 4C by using a resistor 4B to control the voltage l Hi.
The signals are converted into ll and ll protection signals and input to the microcomputer 2B. In the cut-off state, reed switch 4C
is OFF, and the output of the return detection circuit 4' is ``0''. If the solenoid valve 3 is opened again by manual return operation, the reed switch 4C is turned on, and the output of the return detection circuit 4' is ``0''. As a return signal, the microcombi
1-Year 2B input, Microcombi j.
り2Bは、電磁fP3が開状態になったことを認識でき
る、5は、装置電源としての電池である。2B is a battery capable of recognizing that the electromagnetic fP3 is in an open state; 5 is a battery as a power source for the device.
このような従来の装置の欠点は、弁が開状態で(4,電
池5から抵抗4B、 リートスイッチ4人を介して常
に電流が流71 、電池の消耗を早めるという点である
。The disadvantage of such conventional devices is that when the valve is open (4, battery 5, resistor 4B, 4B, leakage switch 4, current is constantly flowing 71), which accelerates battery consumption.
発明の目的
本発明の目的は、上述した従来装置の欠点を排除し、電
池の消耗を極力低減したカス遮断装置を提供するもので
ある。OBJECTS OF THE INVENTION An object of the present invention is to provide a scum cutoff device that eliminates the drawbacks of the conventional devices described above and reduces battery consumption as much as possible.
発明の構成
この発明の構成は、ガス流計センサが異常を感じて電磁
弁を遮断した後、この電磁弁を手動復帰可能とし、電磁
弁が手動復帰されたときに発生する起電力を検出して復
帰信号を出方し、遮UI(N号出力終了より所定時間後
に復帰検出回路へ電源電圧を供給するものである。Structure of the Invention The structure of the present invention enables the solenoid valve to be manually reset after the gas flow meter sensor detects an abnormality and shuts off the solenoid valve, and detects the electromotive force generated when the solenoid valve is manually reset. It outputs a return signal and supplies the power supply voltage to the return detection circuit after a predetermined period of time from the end of the interruption UI (No. N output).
実施例
第1図は、本発明の一実施例の回路図である1゜4は復
帰検出回路で、FET4Aと抵抗4Bで構成する。FE
T4Aは、そのゲートソース間電圧YGsがゼロVで、
そのドレインソース間はオン状態となる。電磁弁3が手
動復帰操作をされると、その電磁コイルには起電力か生
ずる。その起電力は、FET4Aのゲートソース間を逆
バイアスすることになり、そのカットオフ電圧VOFF
よりも大きくなると、FET4Aはオフとなる。マイク
ロコンピュータ2Bは、復帰検出回路4の電源を制御し
ている。これを第2図のタイミングチャートを用いて説
明する。マイクロコンピュータ2Bは遮断信号を出力す
るt1以前では、その出力01は“I H1’!で、ト
ランジスタ2Cはオフ、またその出力 02は゛し′′
で、復帰検出回路4の電源を供給せず、そのだめに復帰
検出回路4の電池消耗はほぼゼロである。時刻t1で遮
断条件を満足しただめに、マイ、クロコンビコータ2B
は出力01を時刻t2までI L01′にし、トランジ
スタ2Cをオンし、電磁コイル3Cに電流を流し、電磁
弁3を遮断状態にする1、時刻t2でトランジスタ2C
がオンから詞フへと移行するが、この時電磁弁3のコイ
/l/3 Gの?lj、流を流し続ける方向に電圧が発
生する。すなわち時刻t3まで、時刻t2までの電圧と
逆向きの電圧が発生ずる。この電圧は、電磁弁3の手動
復帰時に発生ずる起電力による電圧と同一の極性である
から、時刻t2直後に、マイクロコンビコータ2Bの出
力02が゛忠°°となり、復帰検出回路4の電源が供給
され、時刻t2からt3の間に発生している逆起電力を
検出し、これを復帰検出信号としてマイクロコンピュー
タ2Bに出力することになる。Embodiment FIG. 1 is a circuit diagram of an embodiment of the present invention. 1.4 is a return detection circuit, which is composed of a FET 4A and a resistor 4B. FE
T4A has a gate-source voltage YGs of zero V,
The region between the drain and source is in an on state. When the solenoid valve 3 is manually reset, an electromotive force is generated in the solenoid coil. The electromotive force reverse biases between the gate and source of FET4A, and its cutoff voltage VOFF
When it becomes larger than , FET4A is turned off. The microcomputer 2B controls the power supply of the return detection circuit 4. This will be explained using the timing chart of FIG. Before t1 when the microcomputer 2B outputs the cutoff signal, its output 01 is "I H1'!", the transistor 2C is off, and its output 02 is "I H1'!"
Therefore, power is not supplied to the return detection circuit 4, and as a result, the battery consumption of the return detection circuit 4 is almost zero. As soon as the cutoff condition is satisfied at time t1, my black combination coater 2B
sets the output 01 to I L01' until time t2, turns on the transistor 2C, causes current to flow through the electromagnetic coil 3C, and cuts off the electromagnetic valve 3.
transitions from on to word-off, but at this time, the solenoid valve 3's koi/l/3 G's? lj, a voltage is generated in the direction that keeps the current flowing. That is, until time t3, a voltage in the opposite direction to the voltage up to time t2 is generated. Since this voltage has the same polarity as the voltage due to the electromotive force generated when the solenoid valve 3 is manually reset, immediately after time t2, the output 02 of the micro combi coater 2B becomes faithful, and the power supply of the reset detection circuit 4 is supplied, the back electromotive force generated between time t2 and t3 is detected, and this is output to the microcomputer 2B as a return detection signal.
このような不具合を避けるだめ、逆起電力が消滅してか
ら後、すなわち、遮1所信号出力終了時刻t2より所定
時間経過の後の時刻t4より、マイクロコンビ、−夕2
Bはその出力02を阻“°とする。In order to avoid such a problem, after the back electromotive force disappears, that is, from time t4 after a predetermined period of time has elapsed from the interruption signal output end time t2, the microcombi,
B inhibits its output 02.
これにより、復帰検出回路4の電源が供給される。As a result, power is supplied to the recovery detection circuit 4.
手動復帰操作のある時刻t5までは、FET4Aのゲー
トソース間電圧YGsはゼロVであるから、FET4人
はオンし、マイクロコンビコータ2Bの入力12 ば、
+l LO’lとなる。時刻t5で電磁弁3の手動復
帰操作が行なわれると、電磁コイルに起電力が時刻t6
1で発生し、そのだめにFET4人はオフL−イクロコ
ンピコータ2Bの人力12に’爪” カ復帰信号として
人力される。とれによりマイクロコンピュータ2Bは復
帰操作を認識し、時刻t7で出び、その出力02を゛訪
パにし、復帰検出回路4への電源の供給を停市する。Until time t5 when the manual return operation is performed, the gate-source voltage YGs of FET 4A is zero V, so the four FETs are turned on and the input 12 of the micro combi coater 2B is
+l LO'l. When the solenoid valve 3 is manually reset at time t5, an electromotive force is generated in the solenoid coil at time t6.
1, and as a result, the 4 FETs are manually inputted to the OFF L-microcomputer 2B's human power 12 as a 'claw' return signal.As a result, the microcomputer 2B recognizes the return operation and exits at time t7. , its output 02 is turned off, and the power supply to the recovery detection circuit 4 is stopped.
発明の効果
以上詳述したように本発明は、電磁弁の復帰検出回路を
、F’ E Tと抵抗の組合せで構成し、磁石やリード
スイッチを用いる心安がなく、その/こめに電磁弁近傍
に磁石や’J −1−’スイッチを配設する必要がなく
装置全体を小型にできる。寸だ、この復帰検出回路の電
源を、制御回路により遮断信は出力終了後所定時間経過
した後より供給するので、遮(新信号出力時に発生し得
る誤動作をII)j 、+Irでき、さらに、復帰を検
出すべき期間のみ電源が供給されるから電池のいたずら
な消耗がない。Effects of the Invention As detailed above, in the present invention, the return detection circuit of the solenoid valve is configured by a combination of F'ET and a resistor, and there is no need to worry about using a magnet or a reed switch. There is no need to provide a magnet or a 'J-1-' switch, and the entire device can be made smaller. Since the control circuit supplies power to this recovery detection circuit after a predetermined period of time has elapsed after the output of the cutoff signal ends, it is possible to cut off (malfunctions that may occur when outputting a new signal), +Ir, and further, Since power is supplied only during the period during which recovery is to be detected, there is no unnecessary consumption of the battery.
【図面の簡単な説明】
第1図は本発明の一実施例によるガス遮断装置の回路図
、第2図は第1図の動作タイミング図、第3図は従来の
ガス遮断装置の概略構成図、第4図は第3図の回路図で
ある。
1・・・・・流Mセンサ、2 ・・・制作1回路、3・
・・・・・自記保持手動復帰f(す電磁弁、4・・・・
復帰検出回路、5・・・・・・電池。
代岬人の氏名 力)理十 中 尾 敏 刀 ほか1名第
1国
9
1++ し2L3 t< ’&s
c6 b7@3図
第4図[Brief Description of the Drawings] Fig. 1 is a circuit diagram of a gas cutoff device according to an embodiment of the present invention, Fig. 2 is an operation timing diagram of Fig. 1, and Fig. 3 is a schematic configuration diagram of a conventional gas cutoff device. , FIG. 4 is a circuit diagram of FIG. 3. 1...Flow M sensor, 2...Production 1 circuit, 3...
...Self-recording holding manual return f (Solenoid valve, 4...
Return detection circuit, 5...Battery. Daimisakito's name Riki) Riju Satoshi Nakao Katana and 1 other person 1st country 9 1++ shi2L3 t<'&s
c6 b7 @3 Figure 4
Claims (1)
の信号が所定条件を満足したとき遮断信号を出力するp
rlJ御回路と、mJ記遮断信号を受はガス流路を遮断
する自己保持手動復帰型電磁弁と、前記電磁弁が手動復
帰された時に発生する起電力を検出し前記制御回路へ復
帰信号を出力する復帰検出回路と、前記制御回路は前記
電磁弁へ遮断信号出力終了より所定時間後に前記復帰検
出回路へ電#、電圧を供給するガス遮断装置。a flow rate sensor that detects the gas flow rate; and a p that outputs a cutoff signal when a signal from the flow rate sensor satisfies a predetermined condition.
An rlJ control circuit, a self-holding manual return type solenoid valve that receives the mJ cutoff signal and shuts off the gas flow path, and detects an electromotive force generated when the solenoid valve is manually reset and sends a return signal to the control circuit. A gas cutoff device includes a return detection circuit that outputs an output, and the control circuit supplies power and voltage to the return detection circuit after a predetermined time from the end of outputting the cutoff signal to the solenoid valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11021182A JPS591883A (en) | 1982-06-25 | 1982-06-25 | Gas shut off device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11021182A JPS591883A (en) | 1982-06-25 | 1982-06-25 | Gas shut off device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS591883A true JPS591883A (en) | 1984-01-07 |
JPH037836B2 JPH037836B2 (en) | 1991-02-04 |
Family
ID=14529870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11021182A Granted JPS591883A (en) | 1982-06-25 | 1982-06-25 | Gas shut off device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS591883A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6175571U (en) * | 1984-10-24 | 1986-05-21 | ||
JPS62167986A (en) * | 1986-01-20 | 1987-07-24 | Matsushita Electric Ind Co Ltd | Return detecting circuit of gas emergency trip valve |
-
1982
- 1982-06-25 JP JP11021182A patent/JPS591883A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6175571U (en) * | 1984-10-24 | 1986-05-21 | ||
JPH038847Y2 (en) * | 1984-10-24 | 1991-03-05 | ||
JPS62167986A (en) * | 1986-01-20 | 1987-07-24 | Matsushita Electric Ind Co Ltd | Return detecting circuit of gas emergency trip valve |
Also Published As
Publication number | Publication date |
---|---|
JPH037836B2 (en) | 1991-02-04 |
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