JPH1194613A - Device for identifying kind of gas, gas meter incorporating the same, and gas combustor - Google Patents

Device for identifying kind of gas, gas meter incorporating the same, and gas combustor

Info

Publication number
JPH1194613A
JPH1194613A JP25452597A JP25452597A JPH1194613A JP H1194613 A JPH1194613 A JP H1194613A JP 25452597 A JP25452597 A JP 25452597A JP 25452597 A JP25452597 A JP 25452597A JP H1194613 A JPH1194613 A JP H1194613A
Authority
JP
Japan
Prior art keywords
gas
orifice
combustor
type
type discriminating
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
JP25452597A
Other languages
Japanese (ja)
Inventor
Norio Niimura
紀夫 新村
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 JP25452597A priority Critical patent/JPH1194613A/en
Publication of JPH1194613A publication Critical patent/JPH1194613A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To detect the kind of a gas that is used actually. SOLUTION: This device is provided with a gas passage 12 having an orifice 11 of a fixed bore therein and a pressure sensor 13 provided on the downstream side from the orifice 11 to detect pressure within the gas passage 12. Au ultrasonic sensor 14 is provided on the downstream side from the orifice 11 in such a way as to bypass the flow of gas while facing the orifice 11, and a processing circuit 15, to which the outputs of the ultrasonic sensor 14 and the pressure sensor 13 are input to process the outputs is provided. Thereby, identification of the kind of a gas can be automated.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ガスの事故を未然
に防ぐための、ガス種判別装置及びこのガス種判別装置
を内蔵した、ガスメータ、ガス燃焼器に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas type discriminating device for preventing a gas accident from occurring, and a gas meter and a gas combustor incorporating the gas type discriminating device.

【0002】[0002]

【従来の技術】危険性の高いガス事故を未然に防ぐため
従来より種々の安全装置が利用されており、中でもガス
の異常使用およびガス漏れ時等を検出しガスを遮断する
ガス遮断装置が注目されている。特に、ガスメータに内
蔵された流量センサによりガスの流量を監視しマイクロ
コンピュータによりガスの使用状態を判断し異常使用の
場合はガスメータに内蔵されたガス遮断弁によりガスを
遮断する電池電源によるマイクロコンピュータ内蔵ガス
遮断装置(以下マイコンガス遮断装置と省略する)は、
安全性、ガス配管の容易性、低価格等の優位性のため、
全世帯の普及を目指した取り組みが実施されるに至って
いる。また、マイコンガス遮断装置の機能を持ち、流量
センサによって計測されたガス流量情報を電話回線など
を利用して集中監視するテレメータとしても利用できる
集中監視型マイコンメータの普及が促進されている。
2. Description of the Related Art Conventionally, various safety devices have been used in order to prevent a highly dangerous gas accident from occurring. Among them, a gas shut-off device that detects an abnormal use of a gas or a gas leak and shuts off the gas has attracted attention. Have been. In particular, a built-in microcomputer with a battery power supply that monitors the gas flow rate with a flow sensor built into the gas meter, determines the gas usage state with a microcomputer, and shuts off the gas with a gas shut-off valve built into the gas meter in case of abnormal use Gas shut-off device (hereinafter abbreviated as microcomputer gas shut-off device)
Because of its advantages such as safety, ease of gas piping, and low price,
Initiatives aimed at disseminating all households have been implemented. In addition, a centralized monitoring type microcomputer meter having a function of a microcomputer gas shutoff device and being able to be used as a telemeter for centrally monitoring gas flow rate information measured by a flow rate sensor using a telephone line or the like has been promoted.

【0003】また、ガス燃焼器においては、ガスの燃焼
炎中に電圧を印可し燃焼の有無を検知するフレームロッ
ドや、ガスの燃焼温度を検知し燃焼の有無を検知する熱
伝対等の安全装置や、近年ガスの燃焼排気ガス中のCO
発生濃度を検知するCOセンサー等の安全装置を設けガ
ス事故を防止しているのが現状である。
[0003] In the gas combustor, a safety device such as a frame rod for detecting the presence or absence of combustion by applying a voltage during the combustion flame of the gas and a thermocouple for detecting the presence or absence of combustion by detecting the combustion temperature of the gas. In recent years, CO in exhaust gas
The current situation is to provide a safety device such as a CO sensor that detects the generated concentration to prevent gas accidents.

【0004】しかし、このガスメータや、ガス燃焼器で
は、実際に使用されるガスの種類によって構造や、設定
(例えば、ガスノズルの種類、ガス圧の設定、燃焼用ダ
ンパの設定など)が異なるため、市場設置時に人的に使
用されるガス種との適合を図る必要がある。また、現在
では、この使用されるガス種と、ガスメータやガス燃焼
器との適合を人手によって図る手段はなく、もし人的作
業ミスによって不適合が起こった場合、事故につながる
場合が皆無ではない。
However, in the gas meter and the gas combustor, the structure and settings (for example, the type of gas nozzle, the setting of the gas pressure, the setting of the combustion damper, etc.) differ depending on the type of gas actually used. It is necessary to match the type of gas used by humans when setting up the market. At present, there is no means for manually adjusting the type of gas to be used with a gas meter or a gas combustor, and if a mismatch occurs due to a human work error, it is not inevitable that an accident will occur.

【0005】従来使用されているガスメータでは、図5
に示されているようにガスメータの計量部1に設けられ
ガスが流れると回転運動するマグネット2が、判定回路
3に設けたリードスイッチ3−AをON−OFFする信
号を用いてガスの流量を検知する。そして判定回路3に
てガスの異常使用を判定し、ガス通路4に設けたガス遮
断弁5により、異常時にはガス通路を遮断し安全を確保
している。
In a conventional gas meter, FIG.
As shown in FIG. 2, a magnet 2 provided in a measuring section 1 of a gas meter and rotating when a gas flows, uses a signal for turning on and off a reed switch 3-A provided in a determination circuit 3 to control the gas flow rate. Detect. The judging circuit 3 judges the abnormal use of the gas, and the gas shutoff valve 5 provided in the gas passage 4 shuts off the gas passage in the event of an abnormality to ensure safety.

【0006】また、現在使用されているガス燃焼器で
は、図6に示されているようにガスバーナ部6に設けた
フレームロッドなど7の燃焼信号を判定回路8に入力
し、燃焼の有無を判定し、異常時には、ガス通路9に設
けたガス電磁弁等10によりガス通路を遮断し、安全を
確保する構成となっている。
In a gas combustor currently used, a combustion signal of a frame rod or the like 7 provided in a gas burner section 6 is input to a judgment circuit 8 as shown in FIG. In the event of an abnormality, the gas passage is shut off by a gas solenoid valve or the like 10 provided in the gas passage 9 to ensure safety.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、従来の
構成では、実際使用されるガスの種類とガスメータ、ガ
ス燃焼器の適合に関しては、人手に頼らざるを得ず、ガ
ス種の不適合によるガス事故を根絶する事が不可能とい
う大きな課題を有していた。
However, with the conventional configuration, the type of gas actually used and the adaptation of the gas meter and the gas combustor must rely on human beings, and a gas accident due to incompatibility of the gas type must be performed. There was a big problem that eradication was impossible.

【0008】[0008]

【課題を解決するための手段】本発明は、上記課題を解
決するために、一定内径のオリフィスを設けたガス通路
を有し、前記オリフィスの下流側に圧力を検出する圧力
センサーを設け、前記オリフィスの下流側に超音波セン
サーをガスの流れをよぎるように対向して設け、前記超
音波センサーの出力と、圧力センサーの出力を入力し処
理する処理回路を設けてなるガス種判別装置をガス通路
に設けたものである。この本発明によればガスの種類の
判定を人手に頼らず自動化し、安全性を向上させたり、
前記ガス種判別装置をガスメータ、ガス燃焼器に内蔵す
る事により、ガス種の違いによるガス事故を未然に防止
する事ができる。
In order to solve the above-mentioned problems, the present invention has a gas passage provided with an orifice having a constant inner diameter, and a pressure sensor for detecting a pressure downstream of the orifice. An ultrasonic sensor is provided downstream of the orifice so as to cross the gas flow, and a processing circuit for inputting and processing the output of the ultrasonic sensor and the output of the pressure sensor is provided. It is provided in the passage. According to the present invention, the determination of the type of gas is automated without relying on humans to improve safety,
By incorporating the gas type discriminating device in a gas meter or a gas combustor, a gas accident due to a difference in gas type can be prevented beforehand.

【0009】[0009]

【発明の実施の形態】本発明の請求項1に記載の発明
は、一定内径のオリフィスを設けたガス通路を有し、前
記オリフィスの下流側に圧力を検出する圧力センサーを
設け、前記オリフィスの下流側に超音波センサーをガス
の流れをよぎるように対向して設け、前記超音波センサ
ーの出力と、圧力センサーの出力を入力し処理する処理
回路を設けた構成とすることで、一定内径のオリフィス
を通過するガスの流れをよぎるように対抗して設けた超
音波センサーの出力信号と、圧力センサーにより検出さ
れるガス圧力の相関関係が、ガスの種類によって異なる
ことを利用して、自動的にガスの種類を検出することが
できるものである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has a gas passage provided with an orifice having a constant inner diameter, a pressure sensor for detecting pressure downstream of the orifice, An ultrasonic sensor is provided on the downstream side so as to face the gas flow, and an output of the ultrasonic sensor and a processing circuit for inputting and processing the output of the pressure sensor are provided. Utilizing the fact that the correlation between the output signal of an ultrasonic sensor provided to oppose the flow of gas passing through the orifice and the gas pressure detected by the pressure sensor differs depending on the type of gas, Can detect the type of gas.

【0010】また、請求項2に記載の発明は、前記ガス
種判別装置を内蔵したガスメータでる。
The invention according to claim 2 is a gas meter incorporating the gas type discriminating apparatus.

【0011】また、請求項3に記載の発明は、前記ガス
種判別装置を内蔵したガス燃焼器である。
The invention according to claim 3 is a gas combustor incorporating the gas type discriminating apparatus.

【0012】[0012]

【実施例】以下、本発明の実施例について、図面を参照
しながら説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0013】(実施例1)図1は本発明の実施例1にお
けるガス種判別装置の断面図を示すものである。一定内
径のオリフィス11を設けたガス通路12の、前記オリ
フィス11の下流側に圧力を検出する圧力センサー13
を設け、前記オリフィス11の下流側に超音波センサー
14をガスの流れをよぎるように対向してガス通路12
設け、前記超音波センサー14の出力と、圧力センサー
13の出力を入力し処理する処理回路15を設けた構成
としてある。
(Embodiment 1) FIG. 1 is a sectional view of a gas type discriminating apparatus according to Embodiment 1 of the present invention. A pressure sensor 13 for detecting pressure downstream of the orifice 11 in a gas passage 12 having an orifice 11 having a constant inner diameter;
And an ultrasonic sensor 14 is disposed downstream of the orifice 11 so as to cross the gas flow.
And a processing circuit 15 for inputting and processing the output of the ultrasonic sensor 14 and the output of the pressure sensor 13.

【0014】次に、図2は本実施例1における、一定内
径のオリフィス11を通過するガスの流れをよぎるよう
に対抗して設けた超音波センサー14の出力信号と、圧
力センサー13により検出されるガス圧力の相関関係の
一例を示している。図2によれば、圧力センサー13の
ガス圧力が検知されると、超音波センサー14の出力信
号はグラフ中の特性線のAまたは、Bの出力を発生す
る。このとき処理回路に判定値Cを設けておけば、ガス
の種類がAなのか、Bであるのかが自動的に検出できる
こととなる。
Next, FIG. 2 shows an output signal of the ultrasonic sensor 14 provided to oppose the flow of gas passing through the orifice 11 having a constant inner diameter and a pressure sensor 13 in the first embodiment. 4 shows an example of a correlation between gas pressures. According to FIG. 2, when the gas pressure of the pressure sensor 13 is detected, the output signal of the ultrasonic sensor 14 generates the output of the characteristic line A or B in the graph. At this time, if the determination value C is provided in the processing circuit, it is possible to automatically detect whether the gas type is A or B.

【0015】(実施例2)図3は、本発明の請求項2に
記載の実施例2におけるガス種判別装置を内蔵したガス
メータを示すものである。本発明の請求項1に記載のガ
ス種判別装置Zをガス通路15に内蔵し、前記ガス種判
別装置Zのガス種判定処理結果を、ガスメータに内蔵の
判定回路16に出力する事によって、ガスメータとガス
の種類の適合、不適合を自動的に判定する事ができ、万
一不適合の場合には、ガス通路15に設けたガス遮断弁
5により、ガス通路を遮断し安全を確保する事ができ
る。また、自動的にガスの種類を設定できる機能を有し
たガスメータでは、前記ガス種判定の処理結果にてガス
メータのガス種の設定を自動的に変更する事も可能とな
る。
(Embodiment 2) FIG. 3 shows a gas meter having a built-in gas type discriminating apparatus according to a second embodiment of the present invention. The gas type discriminating device Z according to claim 1 of the present invention is built in a gas passage 15, and the result of the gas type discriminating process of the gas type discriminating device Z is output to a judgment circuit 16 built in the gas meter. And the type of gas can be automatically determined. In the event of a mismatch, the gas passage can be shut off by the gas shutoff valve 5 provided in the gas passage 15 to ensure safety. . In a gas meter having a function of automatically setting the type of gas, the setting of the gas type of the gas meter can be automatically changed based on the processing result of the gas type determination.

【0016】(実施例3)図4は、本発明の請求項3に
記載の実施例3におけるガス種判別装置を内蔵したガス
燃焼器を示すものである。本発明の請求項1に記載のガ
ス種判別装置Zをガス通路17に内蔵し、前記ガス種判
別装置Zのガス種判定処理結果を、ガス燃焼器に内蔵の
判定回路18に出力する事によって、ガス燃焼器とガス
の種類の適合、不適合を自動的に判定する事ができ、万
一不適合の場合には、ガス通路17に設けたガス遮断弁
10により、ガス通路を遮断し安全を確保する事ができ
る。
(Embodiment 3) FIG. 4 shows a gas combustor incorporating a gas type discriminating apparatus according to a third embodiment of the present invention. The gas type discriminating device Z according to claim 1 of the present invention is built in the gas passage 17, and the result of the gas type discriminating process of the gas type discriminating device Z is output to a judgment circuit 18 built in the gas combustor. It is possible to automatically judge whether the gas type is compatible with the gas combustor, and in the event of a mismatch, the gas shutoff valve 10 provided in the gas passage 17 shuts off the gas passage to ensure safety. You can do it.

【0017】[0017]

【発明の効果】以上のように本発明は、従来の課題であ
った人手によるガスメータや、ガス燃焼器と実際使用さ
れるガスの種類との適合を自動的に実施できることによ
り、ガスの種類の不適合による事故を未然に防止するこ
とができる。
As described above, according to the present invention, the adaptation of the gas meter or the gas combustor to the type of gas actually used, which has been a conventional problem, can be automatically performed. Accidents due to non-conformity can be prevented beforehand.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例1におけるガス種判別装置の断
面図
FIG. 1 is a sectional view of a gas type discriminating apparatus according to a first embodiment of the present invention.

【図2】同装置の圧力センサーと超音波センサーの出力
の相関関係のガス種における違いを示す特性図
FIG. 2 is a characteristic diagram showing a difference between gas types in a correlation between outputs of a pressure sensor and an ultrasonic sensor of the apparatus.

【図3】本発明の実施例2におけるガス種判別装置を内
蔵したガスメータの断面図
FIG. 3 is a cross-sectional view of a gas meter including a gas type discriminating apparatus according to a second embodiment of the present invention.

【図4】本発明の実施例3におけるガス種判別装置を内
蔵したガス燃焼器の構成図
FIG. 4 is a configuration diagram of a gas combustor incorporating a gas type discriminating apparatus according to a third embodiment of the present invention.

【図5】従来のガスメータの断面図FIG. 5 is a sectional view of a conventional gas meter.

【図6】従来のガス燃焼器の構成図FIG. 6 is a configuration diagram of a conventional gas combustor.

【符号の説明】[Explanation of symbols]

11 一定内径のオリフィス 12 ガス通路 13 圧力センサー 14 超音波センサー 15 処理回路 11 Orifice of constant inner diameter 12 Gas passage 13 Pressure sensor 14 Ultrasonic sensor 15 Processing circuit

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 一定内径のオリフィスを設けたガス通路
を有し、前記オリフィスの下流側に圧力を検出する圧力
センサーを設け、前記オリフィスの下流側に超音波セン
サーをガスの流れをよぎるように対向して設け、前記超
音波センサーの出力と、前記圧力センサーの出力を入力
し処理する処理回路を設けてなるガス種判別装置。
1. A gas passage having an orifice having a constant inner diameter, a pressure sensor for detecting pressure downstream of the orifice, and an ultrasonic sensor downstream of the orifice passing a gas flow. A gas type discriminating device provided oppositely and provided with a processing circuit for inputting and processing the output of the ultrasonic sensor and the output of the pressure sensor.
【請求項2】 ガス通路に請求項1記載のガス種判別装
置を内蔵してなるガスメータ。
2. A gas meter comprising the gas type discriminating device according to claim 1 in a gas passage.
【請求項3】 ガス通路に請求項1記載のガス種判別装
置を内蔵してなるガス燃焼器。
3. A gas combustor having the gas type discriminating apparatus according to claim 1 built in a gas passage.
JP25452597A 1997-09-19 1997-09-19 Device for identifying kind of gas, gas meter incorporating the same, and gas combustor Pending JPH1194613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25452597A JPH1194613A (en) 1997-09-19 1997-09-19 Device for identifying kind of gas, gas meter incorporating the same, and gas combustor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25452597A JPH1194613A (en) 1997-09-19 1997-09-19 Device for identifying kind of gas, gas meter incorporating the same, and gas combustor

Publications (1)

Publication Number Publication Date
JPH1194613A true JPH1194613A (en) 1999-04-09

Family

ID=17266259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25452597A Pending JPH1194613A (en) 1997-09-19 1997-09-19 Device for identifying kind of gas, gas meter incorporating the same, and gas combustor

Country Status (1)

Country Link
JP (1) JPH1194613A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001330490A (en) * 2000-05-23 2001-11-30 Matsushita Electric Ind Co Ltd Gas cutting-off apparatus
JP2003042447A (en) * 2001-08-02 2003-02-13 Paloma Ind Ltd Domestic gas-burning appliance
JP2003074841A (en) * 2001-09-04 2003-03-12 Paloma Ind Ltd Gas combustion system
US10261051B2 (en) 2013-10-23 2019-04-16 Fuji Electric Co., Ltd. Fluid measuring device including an ultrasonic probe having a wedge with an ultrasonic vibrator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001330490A (en) * 2000-05-23 2001-11-30 Matsushita Electric Ind Co Ltd Gas cutting-off apparatus
JP4638574B2 (en) * 2000-05-23 2011-02-23 パナソニック株式会社 Gas shut-off device
JP2003042447A (en) * 2001-08-02 2003-02-13 Paloma Ind Ltd Domestic gas-burning appliance
JP4654460B2 (en) * 2001-08-02 2011-03-23 パロマ工業株式会社 Household gas burning appliance
JP2003074841A (en) * 2001-09-04 2003-03-12 Paloma Ind Ltd Gas combustion system
JP4604271B2 (en) * 2001-09-04 2011-01-05 パロマ工業株式会社 Gas combustion system
US10261051B2 (en) 2013-10-23 2019-04-16 Fuji Electric Co., Ltd. Fluid measuring device including an ultrasonic probe having a wedge with an ultrasonic vibrator

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