JP5293198B2 - Gas shut-off device - Google Patents
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- JP5293198B2 JP5293198B2 JP2009002295A JP2009002295A JP5293198B2 JP 5293198 B2 JP5293198 B2 JP 5293198B2 JP 2009002295 A JP2009002295 A JP 2009002295A JP 2009002295 A JP2009002295 A JP 2009002295A JP 5293198 B2 JP5293198 B2 JP 5293198B2
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本発明は、ガスメータ以後のガス使用時に、ガス使用上の安全を図る及びガス使用上の利便性を向上させるガス遮断装置に関するものである。 The present invention relates to a gas shut-off device that improves safety in use of gas and improves convenience in use of gas when using gas after a gas meter.
ガス器具の使用の際には、ガスの消し忘れやガス漏れなどによる事故を未然に防止するために、ガスのユーザ宅やガス供給路を管理しているガス事業者において、異常時に通報やガス供給路の遮断を行うシステムが普及しつつある。従来のガス保安装置としては、ガス流量などに基づき、大流量が流れたときにガスの供給を遮断したり、微小流量で長時間ガスが流れたときに遮断したり、流量区分別に所定流量で所定時間ガスが流れたときに遮断するものなどが用いられている。 When using gas appliances, in order to prevent accidents caused by forgetting to turn off gas or leaking gas, etc., the gas business operator managing the gas user's home and the gas supply path should notify the Systems that block supply paths are becoming widespread. As a conventional gas security device, based on the gas flow rate, etc., the gas supply is cut off when a large flow rate flows, or the gas flow is cut off when the gas flows for a long time at a minute flow rate. What shuts off when gas flows for a predetermined time is used.
ガスのユーザの家屋等では、ガス供給路の入口部分にガス流量を計測するガスメータが設置されている。この種のガスメータとして、従来は所定の流量ごとに流れたガスの量を積算する膜式のガスメータが一般的であったが、最近では、超音波信号を用いて瞬時流量を求め、この瞬時流量を積算することでガスの流量を計測する超音波式のガスメータも提案されている。
しかしながら、従来のガス遮断装置では、ガス器具の劣化や故障によりガス器具を点火する際に点火できなくなること、または点火し難くなったことを検出できないため、ガス器具の使用状態にかかわらず流量区分別に所定流量で所定時間ガスが流れたときに遮断していた。 However, with conventional gas shut-off devices, it is impossible to detect when the gas appliance is ignited due to deterioration or failure of the gas appliance, or it is difficult to detect that it is difficult to ignite. Separately, it was shut off when gas flowed at a predetermined flow rate for a predetermined time.
また、ガス器具が劣化や故障することで一酸化炭素中毒等の発生し大事故に至ることがあった。 In addition, when the gas appliance deteriorates or breaks down, carbon monoxide poisoning may occur, leading to a major accident.
本発明は、上記事情に鑑みてなされたもので、一酸化炭素中毒に至るガス器具を点火時の流量変動または圧力変動の大きさで特定することで、ガス使用上の安全性を向上させることが可能なガス遮断装置を提供することを目的とする。 The present invention has been made in view of the above circumstances, and by specifying a gas appliance that leads to carbon monoxide poisoning by the magnitude of flow rate fluctuation or pressure fluctuation at the time of ignition, it is possible to improve safety in using the gas. An object of the present invention is to provide a gas shut-off device capable of achieving the above.
本発明のガス遮断装置は、ガス供給管に接続され、ガスの瞬時流量を計測する流量計測部と、ガス供給管に設けられたガス通路を遮断する遮断弁と、前記流量計測部により計測されたガスの瞬時流量に基づき、流量値及び積算流量値及びガスの使用時間を算出する流量演算部と、使用するガス器具を登録するガス器具登録部と、前記ガスの瞬時流量から前記ガス供給管を流れるガスを使用する器具を判別する器具判別部と、前記ガス器具登録部に登録されたガス器具毎に器具点火時の流量変化有無を記憶する器具点火パターン記憶部と、前記器具判別部で使用が判別されたガス器具が、前記器具点火パターン記憶部で点火した際に流量変化有りと記憶されたガス器具であった場合、起動し流量が立ち上がった時点から所定時間内に流量変化が所定の閾値以上であれば点火と判断し、所定値以下であれば未点火と判断する点火判定部と、前記流量演算部で算出された結果や前記点火判定部で判断された結果に基づき、ガス遮断の判断、警報、通報等の判断の制御を行う制御部を有したものである。
The gas shut-off device of the present invention is measured by a flow rate measuring unit that is connected to a gas supply pipe and measures an instantaneous gas flow rate, a shut-off valve that shuts off a gas passage provided in the gas supply pipe, and the flow rate measuring unit. A flow rate calculation unit that calculates a flow rate value, an integrated flow rate value, and a gas usage time, a gas appliance registration unit that registers a gas appliance to be used, and the gas supply pipe from the instantaneous flow rate of the gas. An appliance discriminating unit that discriminates an appliance that uses gas flowing in the gas appliance, an appliance ignition pattern storage unit that stores the flow rate change during appliance ignition for each gas appliance registered in the gas appliance registration unit, and the appliance discriminating unit gas appliance used is discriminated, the instrument firing pattern if a flow rate change there with stored gas appliance when ignited by the storage unit, the flow rate varies within a predetermined time from when the starting flow rate rises Based on an ignition determination unit that determines ignition if it is equal to or greater than a certain threshold value, and that it is unignited if it is equal to or less than a predetermined value, and a result calculated by the flow rate calculation unit or a result determined by the ignition determination unit, It has a control unit for controlling judgment of gas cutoff, warning, notification and the like.
これにより、一酸化炭素中毒に至るガス器具を点火時の流量変動の大きさで特定するこ
とができ、ガス使用上の安全性を向上させることが可能となる。
As a result, the gas appliance that leads to carbon monoxide poisoning can be specified by the magnitude of the flow rate fluctuation at the time of ignition, and the safety in using the gas can be improved.
また、本発明は、ガス供給管に接続され、ガスの瞬時流量を計測する流量計測部と、ガス供給管に設けられたガス通路を遮断する遮断弁と、前記流量計測部により計測されたガスの瞬時流量に基づき、流量値及び積算流量値及びガスの使用時間を算出する流量演算部と、使用するガス器具を登録するガス器具登録部と、前記ガスの瞬時流量から前記ガス供給管を流れるガスを使用する器具を判別する器具判別部と、ガス供給管に設けられたガス通路の圧力を測定する圧力センサと、前記ガス器具登録部に登録されたガス器具毎に器具点火時の圧力変化有無を記憶する器具点火パターン圧力記憶部と、前記器具判別部で使用が判別されたガス器具が、前記器具点火パターン圧力記憶部で点火した際に圧力変化有りと記憶されたガス器具であった場合、起動し流量が立ち上がった時点から所定時間内に圧力変化が所定の閾値以上であれば点火と判断し、所定値以下であれば未点火と判断する圧力点火判定部と、前記流量演算部で算出された結果や前記圧力点火判定部で判断された結果に基づき、ガス遮断の判断、警報、通報等の判断の制御を行う制御部を有したものである。
The present invention also provides a flow rate measuring unit connected to the gas supply pipe for measuring the instantaneous flow rate of the gas, a shutoff valve for blocking a gas passage provided in the gas supply pipe, and the gas measured by the flow rate measuring unit. A flow rate calculation unit that calculates a flow rate value, an integrated flow rate value, and a gas usage time, a gas appliance registration unit that registers a gas appliance to be used, and a gas supply pipe that flows from the instantaneous flow rate of the gas An appliance discriminating unit that discriminates an appliance that uses gas, a pressure sensor that measures the pressure of a gas passage provided in a gas supply pipe, and a pressure change during appliance ignition for each gas appliance registered in the gas appliance registration unit an instrument firing pattern pressure storage unit for storing the presence or absence, the appliance discriminating gas appliance use is determined by the unit has a gas appliance stored that there pressure changes upon ignition by the instrument firing pattern pressure storage unit If the pressure change within the predetermined time from when the starting flow rate rises, it is determined that the ignition if a predetermined threshold value or more, the pressure ignition determination unit for determining a non-ignition is equal to or less than a predetermined value, the flow rate calculation unit And a control unit that controls judgment of gas cutoff, warning, notification, and the like based on the result calculated in step 1 and the result judged by the pressure ignition judgment unit.
これにより、一酸化炭素中毒に至るガス器具を点火時の圧力変動の大きさで特定することができ、ガス使用上の安全性を向上させることが可能となる。 As a result, the gas appliance that leads to carbon monoxide poisoning can be specified by the magnitude of the pressure fluctuation at the time of ignition, and the safety in using the gas can be improved.
本発明によれば、一酸化炭素中毒に至るガス器具を点火時の流量変動または圧力変動の大きさで特定することで、ガス使用上の安全性を向上させることが可能なガス遮断装置を提供することができる。 According to the present invention, there is provided a gas shut-off device capable of improving the safety of gas use by specifying a gas appliance that leads to carbon monoxide poisoning by the magnitude of flow rate fluctuation or pressure fluctuation at the time of ignition. can do.
第１の発明は、ガス供給管に接続され、ガスの瞬時流量を計測する流量計測部と、ガス
供給管に設けられたガス通路を遮断する遮断弁と、前記流量計測部により計測されたガスの瞬時流量に基づき、流量値及び積算流量値及びガスの使用時間を算出する流量演算部と、使用するガス器具を登録するガス器具登録部と、前記ガスの瞬時流量から前記ガス供給管を流れるガスを使用する器具を判別する器具判別部と、前記ガス器具登録部に登録されたガス器具毎に器具点火時の流量変化有無を記憶する器具点火パターン記憶部と、前記器具判別部で使用が判別されたガス器具が、前記器具点火パターン記憶部で点火した際に流量変化有りと記憶されたガス器具であった場合、起動し流量が立ち上がった時点から所定時間内に流量変化が所定の閾値以上であれば点火と判断し、所定値以下であれば未点火と判断する点火判定部と、前記流量演算部で算出された結果や前記点火判定部で判断された結果に基づき、ガス遮断の判断、警報、通報等の判断の制御を行う制御部を有したものである。
1st invention is connected to a gas supply pipe, the flow rate measurement part which measures the instantaneous flow rate of gas, the shut-off valve which interrupts | blocks the gas passage provided in the gas supply pipe, and the gas measured by the said flow rate measurement part A flow rate calculation unit that calculates a flow rate value, an integrated flow rate value, and a gas usage time, a gas appliance registration unit that registers a gas appliance to be used, and a gas supply pipe that flows from the instantaneous flow rate of the gas An appliance discriminating unit that discriminates an appliance that uses gas, an appliance ignition pattern storage unit that stores presence or absence of a flow rate change during appliance ignition for each gas appliance registered in the gas appliance registration unit, and an appliance discriminating unit that is used discriminated gas appliance, the appliance ignition pattern when was the flow rate change there with stored gas appliance when ignited by the storage unit, starting with the threshold flow rate change is given from the time the flow rate rises to within a predetermined time Based on the ignition determination unit that determines ignition if it is above, and that it is unignited if it is less than or equal to a predetermined value, and the result calculated by the flow rate calculation unit or the result that is determined by the ignition determination unit, It has a control unit that controls judgments such as judgments, warnings, and notifications.
これによって、一酸化炭素中毒に至るガス器具を点火時の流量変動の大きさで特定することができ、ガス使用上の安全性を向上させることが可能となる。 As a result, the gas appliance that leads to carbon monoxide poisoning can be specified by the magnitude of the flow rate fluctuation at the time of ignition, and the safety in using the gas can be improved.
第２の発明は、ガス供給管に接続され、ガスの瞬時流量を計測する流量計測部と、ガス供給管に設けられたガス通路を遮断する遮断弁と、前記流量計測部により計測されたガスの瞬時流量に基づき、流量値及び積算流量値及びガスの使用時間を算出する流量演算部と、使用するガス器具を登録するガス器具登録部と、前記ガスの瞬時流量から前記ガス供給管を流れるガスを使用する器具を判別する器具判別部と、ガス供給管に設けられたガス通路の圧力を測定する圧力センサと、前記ガス器具登録部に登録されたガス器具毎に器具点火時の圧力変化有無を記憶する器具点火パターン圧力記憶部と、前記器具判別部で使用が判別されたガス器具が、前記器具点火パターン圧力記憶部で点火した際に圧力変化有りと記憶されたガス器具であった場合、起動し流量が立ち上がった時点から所定時間内に圧力変化が所定の閾値以上であれば点火と判断し、所定値以下であれば未点火と判断する圧力点火判定部と、前記流量演算部で算出された結果や前記圧力点火判定部で判断された結果に基づき、ガス遮断の判断、警報、通報等の判断の制御を行う制御部を有したものである。 According to a second aspect of the present invention, there is provided a flow rate measuring unit connected to the gas supply pipe for measuring an instantaneous gas flow rate, a shutoff valve for blocking a gas passage provided in the gas supply pipe, and a gas measured by the flow rate measuring unit. A flow rate calculation unit that calculates a flow rate value, an integrated flow rate value, and a gas usage time, a gas appliance registration unit that registers a gas appliance to be used, and a gas supply pipe that flows from the instantaneous flow rate of the gas An appliance discriminating unit that discriminates an appliance that uses gas, a pressure sensor that measures the pressure of a gas passage provided in a gas supply pipe, and a pressure change during appliance ignition for each gas appliance registered in the gas appliance registration unit An appliance ignition pattern pressure storage unit that stores presence / absence and a gas appliance that is determined to be used by the appliance determination unit was a gas appliance that was stored as having a pressure change when ignited by the appliance ignition pattern pressure storage unit . Place , The pressure change within the predetermined time from when the starting flow rate rises, it is determined that the ignition if a predetermined threshold value or more, the pressure ignition determination unit for determining a non-ignition is equal to or less than a predetermined value, in the flow rate calculation unit Based on the calculated result and the result determined by the pressure ignition determination unit, the control unit controls the determination of gas cutoff, warning, notification, and the like.
これによって、一酸化炭素中毒に至るガス器具を点火時の圧力変動の大きさで特定することができ、ガス使用上の安全性を向上させることが可能となる。 As a result, the gas appliance that leads to carbon monoxide poisoning can be specified by the magnitude of the pressure fluctuation at the time of ignition, and the safety in using the gas can be improved.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
（実施の形態１）
図１は第１の実施形態に係るガス遮断装置の構成を示すブロック図である。本実施形
態では、ガスのユーザの家屋等に設置されるガスメータを利用するガス遮断装置の構成例を示す。
(Embodiment 1)
FIG. 1 is a block diagram showing the configuration of the gas cutoff device according to the first embodiment. In the present embodiment, a configuration example of a gas shut-off device using a gas meter installed in a gas user's house or the like is shown.
本実施形態のガス遮断装置１０は、ユーザの家屋等に敷設されたガス供給管２０の途中に設けられ、このガス供給管２０の下流側の配管には複数のガス器具として器具Ａ２１、器具Ｂ２２、器具Ｃ２３が接続されている。器具Ａ２１及び器具Ｂ２２は起動し点火した際に流量が立ち上がった時点から所定時間内に流量変化がある器具で、器具Ｃ２３は起動し点火した際に流量が立ち上がった時点から所定時間内に流量変化がない器具である。 The gas cutoff device 10 of the present embodiment is provided in the middle of a gas supply pipe 20 laid in a user's house or the like, and a plurality of gas appliances are provided on the downstream side of the gas supply pipe 20 as instruments A21 and B22. Instrument C23 is connected. The appliance A21 and the appliance B22 have a flow rate change within a predetermined time from the time when the flow rate rises when activated and ignited, and the device C23 changes the flow rate within a predetermined time from the time when the flow rate rises when activated and ignited. There is no instrument.
このガス遮断装置１０は、屋外または屋内の所定位置に設置される。 The gas shut-off device 10 is installed at a predetermined position outdoors or indoors.
以下、本発明の実施例について図面を用いて説明する。ガス遮断装置１０は、流量計測部１１、流量演算部１２、器具登録部１３、器具判別部１４、器具点火パターン記憶部１５、点火判定部１６、制御部１７、通信部１８、遮断弁１９を有して構成される。超音波流量計１１は、ガス供給管２０の経路中に接続され、後述するように、超音波信号を用いてガス供給管２０内のガス流により生じる伝搬時間差を求め、ガスの瞬時流量を検出するものである。流量演算部１２は、検出された瞬時流量を基に、瞬時流量の平均などによって流量値を算出したり、瞬時流量を積算して積算流量値を算出したり、漏れ器具判別のための流量を算出するなど、流量に関する各種演算を行うものである。 Embodiments of the present invention will be described below with reference to the drawings. The gas shut-off device 10 includes a flow rate measurement unit 11, a flow rate calculation unit 12, an appliance registration unit 13, an appliance discrimination unit 14, an appliance ignition pattern storage unit 15, an ignition determination unit 16, a control unit 17, a communication unit 18, and a cutoff valve 19. It is configured. The ultrasonic flowmeter 11 is connected in the path of the gas supply pipe 20 and, as will be described later, obtains a propagation time difference caused by the gas flow in the gas supply pipe 20 using an ultrasonic signal, and detects an instantaneous gas flow rate. To do. Based on the detected instantaneous flow rate, the flow rate calculation unit 12 calculates a flow value based on an average of the instantaneous flow rate, etc., calculates an integrated flow value by integrating the instantaneous flow rate, Various calculations related to the flow rate such as calculation are performed.
次に、動作について図２を用いて説明する。流量計測部１１にて流量が計測されると、流量演算部１２で流量を演算し、器具判別部１３で使用器具を判別する。器具点火パターン記憶部１５は点火時の流量パターンを記憶している。前記器具判別部１４にて器具Ｃ２３と判定した場合は点火判定部１６の処理を実行しない。前記器具判別部１４にて器具Ａ２１または器具Ｂ２２と判定した場合は点火判定部１６にて実際に使用した際の点火時の瞬時流量と前記器具点火パターン記憶部１５の流量パターンを比較する。 Next, the operation will be described with reference to FIG. When the flow rate is measured by the flow rate measurement unit 11, the flow rate calculation unit 12 calculates the flow rate, and the appliance determination unit 13 determines the appliance to be used. The appliance ignition pattern storage unit 15 stores a flow rate pattern during ignition. When the appliance discriminating unit 14 determines that the appliance is C23, the process of the ignition determining unit 16 is not executed. When the appliance discriminating unit 14 determines the appliance A21 or the appliance B22, the ignition determining unit 16 compares the instantaneous flow rate during ignition with the flow rate pattern of the appliance ignition pattern storage unit 15.
具体的には、起動した際に点火判定部１６にて流量が立ち上がった時点から所定時間内に点火による温度変化によって生じる流量変化が所定の閾値以上であれば点火と判断し、所定値以下であれば点火による温度変化が無いため流量変化がないために未点火と判断する。前記点火判定部１６で未点火と判断した場合、制御部１７は前記通信部１８を介してガス事業者への警報、または、前記遮断弁１９を駆動しガス供給管を閉栓する。 Specifically, if the flow rate change caused by the temperature change due to ignition within a predetermined time from the time when the flow rate rises at the ignition determination unit 16 at the time of startup is greater than or equal to a predetermined threshold value, it is determined as ignition, and below the predetermined value. If there is no change in temperature due to ignition, there is no change in flow rate, so it is determined that there is no ignition. When the ignition determination unit 16 determines that the ignition is not lit, the control unit 17 alarms the gas company via the communication unit 18 or drives the shutoff valve 19 to close the gas supply pipe.
尚、前記点火判定部１６の処理を実施した後に、前記器具判別部１３で使用器具を判別し、前記制御部１７で処理を行うことも可能である。 In addition, after performing the process of the ignition determination unit 16, it is also possible to determine the appliance to be used by the appliance determination unit 13 and to perform the process by the control unit 17.
超音波流量計１１を図３を用いて説明する。ガス供給管２０に連通する矩形断面を持つ計測流路３５を有し、この計測流路３５の相対向する流路壁の上流側と下流側には、一対の超音波送受信器３６、３７が配置されている。これらの超音波送受信器３６、３７は、超音波伝播経路が計測流路３５を流動するガス流を斜めに横切るように設定され、交互に超音波を送受信させることによって、ガス流に対して順方向と逆方向に超音波の伝搬を行う。 The ultrasonic flowmeter 11 will be described with reference to FIG. A measurement channel 35 having a rectangular cross section communicating with the gas supply pipe 20 is provided, and a pair of ultrasonic transmitters / receivers 36 and 37 are provided on the upstream side and the downstream side of the opposite channel walls of the measurement channel 35. Has been placed. These ultrasonic transmitters / receivers 36 and 37 are set so that the ultrasonic propagation path obliquely crosses the gas flow flowing through the measurement flow path 35, and by sequentially transmitting / receiving ultrasonic waves, the ultrasonic wave transmission / reception is sequentially performed with respect to the gas flow. Propagation of ultrasonic waves in the opposite direction.
このとき、超音波送受信器３６、３７間の距離、すなわち測定距離をＬ、ガス流に対する超音波伝播経路の角度をφ、超音波送受信器３６、３７の上流から下流への超音波伝播時間をｔ１、下流から上流への超音波伝播時間をｔ２、音速をＣとすると、流速Ｖは以下の式により求められる。 At this time, the distance between the ultrasonic transceivers 36 and 37, that is, the measurement distance is L, the angle of the ultrasonic propagation path with respect to the gas flow is φ, and the ultrasonic propagation time from the upstream to the downstream of the ultrasonic transceivers 36 and 37 is If t1, the ultrasonic propagation time from downstream to upstream is t2, and the sound velocity is C, the flow velocity V can be obtained by the following equation.
Ｖ＝Ｌ／２ｃｏｓφ（（１／ｔ１）−（１／ｔ２）） …（１）
この流速Ｖと計測流路３５の断面積とからガス流の瞬時流量を算出する。
V = L / 2 cos φ ((1 / t1) − (1 / t2)) (1)
The instantaneous flow rate of the gas flow is calculated from the flow velocity V and the cross-sectional area of the measurement channel 35.
制御部１７は、器具判別に用いる判定値等の器具判別情報、超音波流量計１１により計測された瞬時流量値情報、流量演算部１２により算出されたガス流量値情報や積算流量値情報などの流量情報、及び、使用器具や使用状況の履歴情報など、ガス遮断装置１０にて用いる各種情報を記憶し、保安処理部の機能を有し、ガス遮断装置各部の動作制御、通信、警告やガスの遮断などの保安処理を行うものである。ここで、制御部１７、流量演算部１２、器具登録部１３、器具判別部１４、器具点火パターン記憶部１５、点火判定部１６は、マイクロコンピュータ（マイコン）等を構成するプロセッサ及び動作プログラムにより構成され、プロセッサにおいて所定の動作プログラムを実行して対応する処理を行うことにより、各機能が実現される。また、器具登録部１３、器具点火パターン記憶部１５、点火判定部１６は、フラッシュＲＯＭ、ＲＡＭ等のメモリにより構成される。 The control unit 17 includes instrument discrimination information such as a judgment value used for instrument discrimination, instantaneous flow rate value information measured by the ultrasonic flowmeter 11, gas flow rate value information calculated by the flow rate calculation unit 12, and integrated flow rate value information. Stores various information used in the gas shut-off device 10 such as flow rate information and history information of equipment used and usage status, has a function of a security processing unit, operation control of each part of the gas shut-off device, communication, warning and gas Security processing such as shutting off the door is performed. Here, the control unit 17, the flow rate calculation unit 12, the appliance registration unit 13, the appliance determination unit 14, the appliance ignition pattern storage unit 15, and the ignition determination unit 16 are configured by a processor and an operation program that configure a microcomputer (microcomputer) and the like. Each function is realized by executing a predetermined operation program in a processor and performing a corresponding process. Moreover, the appliance registration part 13, the appliance ignition pattern memory | storage part 15, and the ignition determination part 16 are comprised by memories, such as flash ROM and RAM.
通信部１８は、保安制御部がガス遮断の判断又は警報の判断を行った際に、前記記憶部から送られる前記流量値、前記積算流量値、流量の積算時間及び前記器具判定部で判別された器具等のデータをガス事業者に通信するものである。 The communication unit 18 is discriminated by the flow rate value, the accumulated flow rate value, the accumulated flow time of the flow rate and the appliance judgment unit sent from the storage unit when the safety control unit makes a judgment of gas cutoff or an alarm. It communicates data such as equipment to the gas company.
遮断弁１９は、ガス供給管２０の経路中に接続され、制御部１５からの指示に基づいてガス供給管２０を閉塞してガスの供給を遮断するものである。 The shut-off valve 19 is connected in the path of the gas supply pipe 20 and shuts off the gas supply by closing the gas supply pipe 20 based on an instruction from the control unit 15.
次に、器具判別部１４について図４を用いて詳しく説明する。２４は開始命令、２５は流量計測命令、２６は流量変化判断命令、２７はインターバル設定命令、２８は立上り波形作成命令、２９は器具パターン比較判断命令、３０はインターバル設定命令、３１は器具特定命令、３２は判別記憶命令、３３は保安命令である。 Next, the appliance determination unit 14 will be described in detail with reference to FIG. 24 is a start command, 25 is a flow rate measurement command, 26 is a flow rate change determination command, 27 is an interval setting command, 28 is a rising waveform creation command, 29 is a device pattern comparison determination command, 30 is an interval setting command, 31 is a device specifying command , 32 is a discrimination memory command, and 33 is a security command.
開始命令２４によりプログラムが開始する。流量計測命令２５により前述した通常の流量計測が行われる。ここで器具Ａ２１、器具Ｂ２２、器具Ｃ２３のいずれかが使用されると、流量変化が生じるが、これは流量変化判断命令２６によりＹｅｓの側になる。器具Ａ２１、器具Ｂ２２、器具Ｃ２３の立上りでない場合にはＮｏの側になり、インターバル設定命令２７にて設定された時間ののち、また同様の動作が繰返される。流量変化を検知した場合には、立上り波形作成命令２８により流量の立上り波形が形成される。これは予め登録されている立上りパターンと器具パターン比較判断命令２９により比較され、合致するものがあった場合には器具特定命令３１により使用器具が特定される。もし、合致しない場合には別の要因によるものゆえ、Ｎｏの側を取り、インターバル設定命令２７により定められた時間の後、再度上記の内容を繰返す。 The program is started by the start command 24. The normal flow rate measurement described above is performed by the flow rate measurement command 25. Here, when any one of the appliance A21, the appliance B22, and the appliance C23 is used, a flow rate change occurs, which is set to Yes by the flow rate change determination command 26. If the appliance A21, the appliance B22, and the appliance C23 are not started up, the answer is No, and after the time set by the interval setting command 27, the same operation is repeated. When the flow rate change is detected, a rising waveform of the flow rate is formed by the rising waveform creation command 28. This is compared with the rising pattern registered in advance by the appliance pattern comparison / decision command 29, and when there is a match, the appliance to be used is specified by the appliance specifying command 31. If it does not match, it is due to another factor, so the No side is taken, and after the time set by the interval setting command 27, the above contents are repeated again.
（実施の形態２）
図５は第２の実施形態に係るガス遮断装置の構成を示すブロック図である。圧力センサ４０は、ガス供給管に設けられたガス通路の圧力を測定する。流量計測部１１にて流量が計測されると、流量演算部１２で流量を演算し、器具判別部１３で使用器具を判別する。器具点火パターン圧力記憶部４１は点火時の圧力パターンを記憶している。前記器具判別部１３にて器具Ｃ２３と判定した場合は圧力点火判定部４２の処理を実行しない。前記器具判別部１３にて器具Ａ２１または器具Ｂ２２と判定した場合は圧力点火判定部４２にて実際に使用した際の点火時の圧力と前記器具点火パターン圧力記憶部４１の圧力パターンを比較する。具体的には、器具Ａ２１または器具Ｂ２２が起動した際に圧力点火判定部４２にて流量が立ち上がった時点から所定時間内の圧力変化が所定の閾値以上であれば点火と判断し、所定値以下であれば未点火と判断する。前記圧力点火判定部４２で未点火と判断した場合、制御部１７は前記通信部１８を介してガス事業者への警報、または、前記遮断弁１９を駆動しガス供給管を閉栓する。
(Embodiment 2)
FIG. 5 is a block diagram showing the configuration of the gas cutoff device according to the second embodiment. The pressure sensor 40 measures the pressure of the gas passage provided in the gas supply pipe. When the flow rate is measured by the flow rate measurement unit 11, the flow rate calculation unit 12 calculates the flow rate, and the appliance determination unit 13 determines the appliance to be used. The appliance ignition pattern pressure storage unit 41 stores a pressure pattern at the time of ignition. When the appliance determination unit 13 determines that the appliance is C23, the process of the pressure ignition determination unit 42 is not executed. When the appliance determination unit 13 determines that the appliance is A21 or B22, the pressure ignition determination unit 42 compares the pressure at the time of actual use with the pressure pattern of the appliance ignition pattern pressure storage unit 41. Specifically, if the pressure change within a predetermined time from the time when the flow rate rises at the pressure ignition determination unit 42 when the device A21 or the device B22 is activated, it is determined as ignition if the pressure change within a predetermined time is not less than a predetermined value. If so, it is determined that the ignition has not been performed. When the pressure ignition determination unit 42 determines that the ignition has not been performed, the control unit 17 alerts the gas company via the communication unit 18 or drives the shut-off valve 19 to close the gas supply pipe.
また、器具点火パターン圧力記憶部４１、圧力点火判定部４２は、フラッシュＲＯＭ、
ＲＡＭ等のメモリにより構成される。
The appliance ignition pattern pressure storage unit 41 and the pressure ignition determination unit 42 are a flash ROM,
It is configured by a memory such as a RAM.
本発明は、一酸化炭素中毒に至るガス器具を点火時の流量変動または圧力変動の大きさで特定することで、ガス使用上の安全性を向上させることが可能なガス遮断装置に有用である。 INDUSTRIAL APPLICABILITY The present invention is useful for a gas shut-off device that can improve the safety of gas use by specifying a gas appliance that leads to carbon monoxide poisoning by the magnitude of flow rate fluctuation or pressure fluctuation during ignition. .
１０ ガス遮断装置
１１ 超音波流量計
１２ 流量演算部
１３ 器具登録部
１４ 器具点火パターン記憶部
１５ 点火判定部
１６ 制御部
１７ 通信部
１８ 感震器
１９ 遮断弁
２０ ガス供給管
２１、２２、２３ 器具
２４ 開始命令
２５ 流量計測命令
２６ 流量変化判断命令
２７ インターバル設定命令
２８ 立上り波形作成命令
２９ 器具パターン比較判断命令
３０ インターバル設定命令
３１ 器具特定命令
３２ 判別記憶命令
３５ 計測流路
３６、３７ 超音波送受信器
４０ 圧力センサ
４１ 器具点火パターン圧力記憶部
４２ 圧力点火判定部
DESCRIPTION OF SYMBOLS 10 Gas shut-off device 11 Ultrasonic flow meter 12 Flow rate calculation part 13 Instrument registration part 14 Instrument ignition pattern memory | storage part 15 Ignition determination part 16 Control part 17 Communication part 18 Seismic device 19 Shut-off valve 20 Gas supply pipe 21, 22, 23 Instrument 24 Start command 25 Flow rate measurement command 26 Flow rate change determination command 27 Interval setting command 28 Rising waveform creation command 29 Instrument pattern comparison determination command 30 Interval setting command 31 Instrument specification command 32 Discrimination memory command 35 Measurement flow path 36, 37 Ultrasonic transceiver 40 Pressure Sensor 41 Appliance Ignition Pattern Pressure Storage Unit 42 Pressure Ignition Determination Unit
Claims (2)
ガス供給管に設けられたガス通路を遮断する遮断弁と、
前記流量計測部により計測されたガスの瞬時流量に基づき、流量値及び積算流量値及びガスの使用時間を算出する流量演算部と、
使用するガス器具を登録するガス器具登録部と、
前記ガスの瞬時流量から前記ガス供給管を流れるガスを使用する器具を判別する器具判別部と、
前記ガス器具登録部に登録されたガス器具毎に器具点火時の流量変化有無を記憶する器具点火パターン記憶部と、
前記器具判別部で使用が判別されたガス器具が、前記器具点火パターン記憶部で点火した際に流量変化有りと記憶されたガス器具であった場合、起動し流量が立ち上がった時点から所定時間内に流量変化が所定の閾値以上であれば点火と判断し、所定値以下であれば未点火と判断する点火判定部と、
前記流量演算部で算出された結果や前記点火判定部で判断された結果に基づき、ガス遮断の判断、警報、通報等の判断の制御を行う制御部を有したガス遮断装置。 A flow rate measuring unit connected to the gas supply pipe for measuring the instantaneous flow rate of gas;
A shutoff valve for shutting off a gas passage provided in the gas supply pipe;
Based on the instantaneous flow rate of the gas measured by the flow rate measurement unit, a flow rate calculation unit that calculates a flow rate value, an integrated flow rate value, and a gas usage time;
A gas appliance registration unit for registering the gas appliance to be used;
An appliance discriminating unit for discriminating an appliance using the gas flowing through the gas supply pipe from the instantaneous flow rate of the gas;
An appliance ignition pattern storage unit that stores the flow rate change presence or absence during appliance ignition for each gas appliance registered in the gas appliance registration unit;
If the gas appliance that has been determined to be used by the appliance discriminating unit is a gas appliance that has been stored as having a flow rate change when ignited by the appliance ignition pattern storage unit, the gas appliance is activated and within a predetermined time from when the flow rate rises. An ignition determination unit that determines ignition if the flow rate change is greater than or equal to a predetermined threshold value, and determines that ignition has not occurred if the flow rate change is less than or equal to the predetermined value;
A gas shut-off device having a control unit that controls judgment of gas shut-off, alarm, notification, and the like based on a result calculated by the flow rate calculation unit and a result judged by the ignition determination unit.
ガス供給管に設けられたガス通路を遮断する遮断弁と、
前記流量計測部により計測されたガスの瞬時流量に基づき、流量値及び積算流量値及びガスの使用時間を算出する流量演算部と、
使用するガス器具を登録するガス器具登録部と、
前記ガスの瞬時流量から前記ガス供給管を流れるガスを使用する器具を判別する器具判別部と、
ガス供給管に設けられたガス通路の圧力を測定する圧力センサと、
前記ガス器具登録部に登録されたガス器具毎に器具点火時の圧力変化有無を記憶する器具点火パターン圧力記憶部と、
前記器具判別部で使用が判別されたガス器具が、前記器具点火パターン圧力記憶部で点火した際に圧力変化有りと記憶されたガス器具であった場合、起動し流量が立ち上がった時点から所定時間内に圧力変化が所定の閾値以上であれば点火と判断し、所定値以下であれ
ば未点火と判断する圧力点火判定部と、
前記流量演算部で算出された結果や前記圧力点火判定部で判断された結果に基づき、ガス遮断の判断、警報、通報等の判断の制御を行う制御部を有したガス遮断装置。
A flow rate measuring unit connected to the gas supply pipe for measuring the instantaneous flow rate of gas;
A shutoff valve for shutting off a gas passage provided in the gas supply pipe;
Based on the instantaneous flow rate of the gas measured by the flow rate measurement unit, a flow rate calculation unit that calculates a flow rate value, an integrated flow rate value, and a gas usage time;
A gas appliance registration unit for registering the gas appliance to be used;
An appliance discriminating unit for discriminating an appliance using the gas flowing through the gas supply pipe from the instantaneous flow rate of the gas;
A pressure sensor for measuring the pressure of a gas passage provided in the gas supply pipe;
An appliance ignition pattern pressure storage unit that stores the presence or absence of pressure change during appliance ignition for each gas appliance registered in the gas appliance registration unit;
The appliance discriminating gas appliance use is determined by the unit, the instrument firing pattern pressure when the storage unit was pressure change there with stored gas appliance upon ignition, the predetermined from the time of starting to flow rises time A pressure ignition determination unit that determines ignition if the pressure change is greater than or equal to a predetermined threshold value, and determines that ignition has not occurred if the pressure change is equal to or less than a predetermined value;
A gas shut-off device having a control unit that controls judgment of gas shut-off, warning, notification, and the like based on a result calculated by the flow rate calculation unit and a result judged by the pressure ignition judgment unit.
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