JPS591884A - Gas shut off device - Google Patents

Gas shut off device

Info

Publication number
JPS591884A
JPS591884A JP11021282A JP11021282A JPS591884A JP S591884 A JPS591884 A JP S591884A JP 11021282 A JP11021282 A JP 11021282A JP 11021282 A JP11021282 A JP 11021282A JP S591884 A JPS591884 A JP S591884A
Authority
JP
Japan
Prior art keywords
solenoid valve
output
cutoff
detection circuit
signal
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.)
Pending
Application number
JP11021282A
Other languages
Japanese (ja)
Inventor
Hiroshi Fujieda
藤枝 博
Tatsuo Saka
達男 坂
Takashi Uno
宇野 尚
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11021282A priority Critical patent/JPS591884A/en
Publication of JPS591884A publication Critical patent/JPS591884A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

PURPOSE:To decrease consumption of a battery as small as possible, by manually resetting a solenoid valve after its shut off through sensing of abnormality with a gas flow sensor and supplying power source voltage to a resetting detector circuit after output of a cutoff signal to the solenoid valve. CONSTITUTION:A resetting detector circuit 4 is constituted by a field effect transistor (FET)4A and a resistor 4B. The FET4A provides zero voltage between gate sources and a turn on state between drain sources. If a solenoid valve 3 is operated to be manually reset, an electromotive force is generated in a coil, and this causes a reverse bias between the gate sources of the FET4A, if it exceeds a cutoff voltage, the FET4A is turned off. A microcomputer 2B generates an output O1 in a level Hi before output of a cutoff signal and an output O2 in a level Lo, no supplying power source to the resetting detector circuit 4, in this way, consumption of a battery in this circuit 4 is almost zero.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ガスの流量を開側して種々の原因によって生
ずるガ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 gas explosions caused by various causes by opening a gas flow rate.

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や、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 outflow of gas due to detachment or cracking of the rubber hose that connects gas pipes and gas appliances, 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5図に示す構成のものが
ある。第6図で、1はガスメータ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−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
次のオン壕て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くし
ている。まだ、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。
As this type of gas cutoff device, there is one having a configuration shown in FIG. In FIG. 6, reference numeral 1 denotes a flow rate sensor that is attached to the gas meter 7 and detects the flow rate of gas. This sensor is, for example, a part of a diaphragm constituting the gas meter or a link mechanism that transmits the reciprocating motion of the diaphragm to the indicator. There is a combination of a magnet installed in the magnet and a reed switch that detects the position of the 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 solenoid valve is designed to self-maintain in an open state by the force of a magnet, thereby reducing consumption of the battery that serves as the device's power source. However, 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. Once the circuit is in the cut-off state in this way, it will not be brought into the open state by the force of the magnet alone, and there is no longer a need for current to flow. To open the valve, open it manually and use the magnet to hold it in place. 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 shutoff conditions are satisfied,
A cutoff signal is output to the solenoid valve 3.

処理手続きとしては、例えば、流量センサ1で検出する
流量が一定値の寸まで、所定時間を越えて流れているか
否かを判定する。もしも越えていれば、その流量相肖の
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。
As a processing procedure, for example, it is determined whether the flow rate detected by the flow rate sensor 1 is flowing to a certain value for a predetermined time period. If it exceeds the flow rate, it means that the device with that flow rate has been used for a longer period of time than the normal operating time, and such a condition indicates some kind of abnormality, and a shut-off signal is output.

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、弁が遮断状態か番かを
、制御部に認識させる必要があるへこのため、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り一トスイソチを設け、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方われでいた。
This type of equipment uses a self-holding manual return type solenoid valve, so after the control unit outputs a shut-off signal, it is necessary for the control unit to recognize whether the valve is in the shut-off state or not. Conventionally, a magnet is installed in the movable part, and a toss is installed at a position where the solenoid valve is turned on when it is open and turned off when it is closed, and the control unit is made to recognize the open and closed status of the valve by turning on and off this reed switch. I was lost.

これを今少し詳しく第6図を用いて説明する。This will now be explained in more detail using FIG. 6.

2は制御回路で、流量センサ1のリードスイッチ、チの
オンオフを、抵抗2人で電圧の’ l(t +l  n
 bO“′信号に変換する。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
の処理手続きに従がって処理する。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;!22Cがオンし、電磁
弁3Cの電磁コイルに電流が流れ、ガス流路が遮断され
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(7) ” H1”  ” L 
O”信号に変換し、マイクロコンピュータ2Bに人力す
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′出力は+ HiI+である。もしも手動復帰
操作により、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I t、 
o++となり、これにより−フィクロコンピュータ2B
は、弁3が開状態になったことを認識できる、6は、装
置電源としての電池である。
2 is a control circuit that turns on and off the reed switch of flow sensor 1 and the voltage 'l(t +l n
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 converts the cutoff signal into As a result, transistor !22C turns on, current flows through the electromagnetic coil of solenoid valve 3C, and the gas flow path is cut off. 4' is a return detection circuit, and resistor 4B turns on and off reed switch 4C. Voltage (7) "H1""L
O" signal and manually input it to the microcomputer 2B. In the cutoff state, the reed switch 4C is off, and the return detection circuit 4' output is + HiI+. If the valve 3 is opened again by manual return operation. For example, the reed switch 4C is turned on, and the output of the recovery detection circuit 4' is I t,
o++, which results in -Phycrocomputer 2B
6 can recognize that the valve 3 is in an open state. 6 is a battery as a power source for the device.

このような従来装置の欠点は、弁が開状態では電池5か
ら、抵抗4BI)−ドスイyチ4Aを介して常に電流1
が流、れ、電池の消耗を速めるという点である。
The disadvantage of such a conventional device is that when the valve is open, a current of 1 is always drawn from the battery 5 through the resistor 4BI) and the switch 4A.
The problem is that this will cause the battery to drain faster.

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、ガ
ス〃[7出の異常時にガスを遮断する装置において、電
池の消耗を極力低減したガ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 eliminate the drawbacks of the conventional devices described above and to provide a gas cutoff device that reduces battery consumption as much as possible in a device that cuts off gas in the event of an abnormality. .

発明の構成 この発明の構成は、ガス流量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
弁への遮断信号出力後に復帰検出回路へ電源電圧を提供
するものである。
Composition of the Invention The composition of the present invention is that after the gas flow rate sensor senses an abnormality and shuts off the solenoid valve, the solenoid valve can be manually reset, and after a shutoff signal is output to the solenoid valve, power supply voltage is provided to the reset detection circuit. It is something.

実施例の説明 第1図は本発明の一実施例の回路図である。4は復帰検
出回路で、FET4Aと抵抗4Bで構成する。FET4
Aは、そのゲートノース間電圧Vcs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が生ずる
。その起電力は、FET4Aのゲートノース間を逆バイ
アスすることになり、そのカットオフ電圧Voyyより
も犬きくなると、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t
1以前で′は、その出力01はHi I+で、トランジ
スタ2Cはオフ、まだその出力02は°l L OI+
で、復帰検出回路4の電源を供給せず、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
断条件を満足しだだめて、マイクロコンピュータ2 B
 7’)s 出力o1ヲ電磁弁3を確実に遮断状態にす
るまでの時間、すなわち時刻t2まで+ L oI+に
し、トランンスタ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。遮断信号を出方後
時刻t3で、マイクロコンピュータ2Bはその出力。2
をII H、Qにし、復帰検出回路4に電源を供給する
DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a circuit diagram of an embodiment of the present invention. Reference numeral 4 denotes a return detection circuit, which is composed of a FET 4A and a resistor 4B. FET4
A has a gate-north voltage Vcs of zero V, and is in an on state between its drain and source. When the solenoid valve 3 is manually reset, an electromotive force is generated in the solenoid coil. The electromotive force reversely biases the gate and north of the FET 4A, and when it becomes higher than the cutoff voltage Voyy, the FET 4A 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. Microcomputer 2B outputs a cutoff signal t
Before 1', its output 01 is Hi I+, transistor 2C is off, and its output 02 is still °l L OI+
Therefore, power is not supplied to the return detection circuit 4, and the battery consumption of the return detection circuit 4 is almost zero. At time t1, after the cutoff condition is satisfied, the microcomputer 2B
7')s The time required to ensure that the output o1 solenoid valve 3 is in the cutoff state, that is, until time t2, is set to +L oI+, the transformer 2C is turned on, a current is passed through the electromagnetic coil 3c, and the solenoid valve 3 is cut off. Make it. At time t3 after outputting the cutoff signal, the microcomputer 2B outputs the same. 2
are set to II H and Q, and power is supplied to the recovery detection circuit 4.

時刻t3以降手動復帰操作のある時刻t4まてばFET
4Aのゲートソース間電圧VasはゼロVであるから、
FET4Aはオンし、マイクロコンピュータ2Bの入力
12は、LO°°となる。時刻t4で、弁3の手動復帰
操作が行なゎ′i1.ると、電磁コイルに起電力が発生
し、ためにFET4Aはオフしマイクロコンピュータ2
Bの入力i 2 K ”Hi”が入力される。これによ
りマイクロコンピュータ2Bは、復帰操作を認識し1時
刻t5で再び、その出力02をII、 oI+にし、復
帰検出回路4への電源の供給を停止する。
FET at time t4 with manual return operation after time t3
Since the gate-source voltage Vas of 4A is zero V,
FET 4A is turned on, and input 12 of microcomputer 2B becomes LO°°. At time t4, the manual return operation of the valve 3 is performed and ゎ'i1. Then, an electromotive force is generated in the electromagnetic coil, so FET4A is turned off and the microcomputer 2
B's input i 2 K "Hi" is input. As a result, the microcomputer 2B recognizes the return operation, sets its output 02 to II, oI+ again at time t5, and stops supplying power to the return detection circuit 4.

本実施例によれば、電磁弁3の復帰検出回路4として、
磁石やリードスイッチを用いる必要がなく、装置全体と
して小型化できる、また、マイクロコンピュータ2Bに
より、必要のある期間のみ復帰検出回路4に電源を供給
するので、電池の復帰検出回路4による消耗を低下させ
ることができ同一の電池での装置動作期間を従来装置よ
り延長することができる。
According to this embodiment, as the return detection circuit 4 of the solenoid valve 3,
There is no need to use magnets or reed switches, and the entire device can be made more compact. Furthermore, the microcomputer 2B supplies power to the return detection circuit 4 only during the necessary period, reducing battery consumption caused by the return detection circuit 4. The operating period of the device using the same battery can be extended compared to conventional devices.

第3図は、本発明の他の実施例で、復帰検出回路4を従
来と同じく、電磁弁3の可動部に設置した磁石に応動す
るリードスイッチを用いた場合である。動作は第1図の
実施例とほぼ同じであり、第4図にその動作タイミング
チャートを示す。マイクロコンピュータ2Bは、時刻t
1からt3まで遮断信号を出力し、この間に電磁弁3は
遮断状態となり、リードスイッチ4Cはオフとなる。(
時刻t2)。
FIG. 3 shows another embodiment of the present invention in which the return detection circuit 4 uses a reed switch that responds to a magnet installed in the movable part of the solenoid valve 3, as in the conventional case. The operation is almost the same as that of the embodiment shown in FIG. 1, and FIG. 4 shows the operation timing chart. The microcomputer 2B at time t
A cutoff signal is output from 1 to t3, and during this period, the solenoid valve 3 is in a cutoff state and the reed switch 4C is turned off. (
time t2).

その後t4でマイクロコンピュータ2Bは、復帰検出回
路4の電源を供給(その出力02を+ Hi++ )開
始する。時刻t5で手動復帰操作が行なわれるまでは、
リードスイッチ4Cはオフだから、復帰検出回路4には
電流が流れない。手動復帰操作が行なわれると、リード
スイッチ4cはオフからオンとなり、マイクロコンピュ
ータ2B人力12は” L O”となり、これにより、
手動復帰を認識し、その出力02を再び+ L OI+
とし、復帰検出回路4への電源の供給を停止する。
Thereafter, at t4, the microcomputer 2B starts supplying power to the return detection circuit 4 (setting its output 02 to +Hi++). Until the manual return operation is performed at time t5,
Since the reed switch 4C is off, no current flows through the return detection circuit 4. When the manual return operation is performed, the reed switch 4c changes from off to on, and the microcomputer 2B human power 12 becomes "L O", thereby,
Recognizes manual return and outputs 02 again +L OI+
Then, the supply of power to the recovery detection circuit 4 is stopped.

本実施例によれば、抵抗4B、リートスイッチ4Cを介
して電流が流れるのは、リードスイッチ4Cがオンして
から、マイクロコンピュータ2Bがその出力02をIH
l++がらl L OI+に切換えるまでの時間(時刻
t6から時刻t7まで)にすぎず、復帰検出回路4の電
池の消耗は極めて少なくなる。
According to this embodiment, the current flows through the resistor 4B and the reed switch 4C after the reed switch 4C is turned on.
This is only the time it takes to switch from l++ to lLOI+ (from time t6 to time t7), and the battery consumption of the recovery detection circuit 4 is extremely small.

以上述べた例では、流量センサとして、磁石とリードス
イッチを組合せたものを例にあげ説明したが、磁石と磁
電変換素子、光を用いたもの等、ガス流量を検出できる
ものであれば他のものでもよいことは明らかである。
In the above example, the flow rate sensor was explained using a combination of a magnet and a reed switch, but other devices that can detect the gas flow rate, such as those that use a magnet, magnetoelectric conversion element, or light, are used. It is clear that it can be anything.

発明の効果 以上詳述したように1本発明によれば、復帰検出回路へ
の電源の供給を、制御回路により制御し、必要のある時
のみ電源を供給するものであり、従来装置に比し、電池
の消耗を著しく低減できる。
Effects of the Invention As detailed above, according to the present invention, the supply of power to the recovery detection circuit is controlled by the control circuit, and the power is supplied only when necessary, which is superior to conventional devices. , battery consumption can be significantly reduced.

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

第1図は本発明の一実施例の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チャート、第3図は本発
明の他の実施例の回路図、第4図は第3図の動作タイミ
ングチャート、第6図は従来の装置の概略構成図、第6
図は第5図の回路図である。 1・・・・・・リードスイッチ、2・・・・・制御回路
、3・・・・・自己保持手動復帰型電磁弁、4・・・・
・・復帰検出回路、5・・・・・電池。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図 2 第2図 第3図
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 chart of FIG. 1, FIG. 3 is a circuit diagram of another embodiment of the present invention, and FIG. Figure 3 is an operation timing chart, Figure 6 is a schematic configuration diagram of a conventional device, Figure 6 is
The figure is the circuit diagram of FIG. 1...Reed switch, 2...Control circuit, 3...Self-holding manual return type solenoid valve, 4...
...Return detection circuit, 5...Battery. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] ガス流量を検出する流量センサと、前記流量センサから
の信号が所定条件を満足したとき遮断信号を出力する制
御回路と、前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、これ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、電源としての電池とより成り、前記制御
回路は、前記電磁弁への遮断信号出力後、前記復帰検出
回路への電源電圧を供給するガス遮断装置。
A flow rate sensor that detects the gas flow rate, a control circuit that outputs a cutoff signal when a signal from the flow rate sensor satisfies a predetermined condition, and a self-holding manual return type solenoid valve that cuts off the gas flow path upon receiving the cutoff signal. , a return detection circuit that detects when the solenoid valve is manually reset and outputs a return signal to the control circuit, and a battery as a power source, and the control circuit outputs a cutoff signal to the solenoid valve. A gas cutoff device that supplies a power supply voltage to the return detection circuit after the output.
JP11021282A 1982-06-25 1982-06-25 Gas shut off device Pending JPS591884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11021282A JPS591884A (en) 1982-06-25 1982-06-25 Gas shut off device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11021282A JPS591884A (en) 1982-06-25 1982-06-25 Gas shut off device

Publications (1)

Publication Number Publication Date
JPS591884A true JPS591884A (en) 1984-01-07

Family

ID=14529896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11021282A Pending JPS591884A (en) 1982-06-25 1982-06-25 Gas shut off device

Country Status (1)

Country Link
JP (1) JPS591884A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0314001A (en) * 1989-06-12 1991-01-22 Matsushita Electric Ind Co Ltd Fluid controller
EP1785341A1 (en) 2005-11-10 2007-05-16 HONDA MOTOR CO., Ltd. Tail lamp structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0314001A (en) * 1989-06-12 1991-01-22 Matsushita Electric Ind Co Ltd Fluid controller
EP1785341A1 (en) 2005-11-10 2007-05-16 HONDA MOTOR CO., Ltd. Tail lamp structure

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