JPH0659328B2 - Gas shutoff device - Google Patents
Gas shutoff deviceInfo
- Publication number
- JPH0659328B2 JPH0659328B2 JP11972086A JP11972086A JPH0659328B2 JP H0659328 B2 JPH0659328 B2 JP H0659328B2 JP 11972086 A JP11972086 A JP 11972086A JP 11972086 A JP11972086 A JP 11972086A JP H0659328 B2 JPH0659328 B2 JP H0659328B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- valve
- sphere
- shutoff device
- control unit
- 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.)
- Expired - Lifetime
Links
Landscapes
- Measuring Volume Flow (AREA)
- Safety Valves (AREA)
- Sampling And Sample Adjustment (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明はガス供給の総合的な安全を保証するガス遮断装
置に関するものである。Description: FIELD OF THE INVENTION The present invention relates to a gas shutoff device that ensures the overall safety of a gas supply.
従来の技術 近年、ガス遮断装置はマイクロエレクトロニクスの発達
により小型で低コストになり一般家庭にも普及してきて
いる。2. Description of the Related Art In recent years, gas breakers have become small and low-cost due to the development of microelectronics, and have become popular in general households.
以下図面を参照しながら上述した従来のガス遮断装置の
一例について説明する。第2図は従来のガス遮断装置の
構成図を示す。第2図において、1はガスメータ、2は
ガスメータ1に取り付けた流量センサ、3はガスメータ
1に取り付けたダイヤフラム式の圧力センサ、4は制御
部、5はガスメータ1に通じるガス路の自己保持型遮断
弁(以下遮断弁と呼ぶ)である。An example of the above-described conventional gas shutoff device will be described below with reference to the drawings. FIG. 2 shows a block diagram of a conventional gas shutoff device. In FIG. 2, 1 is a gas meter, 2 is a flow sensor attached to the gas meter 1, 3 is a diaphragm type pressure sensor attached to the gas meter 1, 4 is a control unit, and 5 is a self-holding cutoff of a gas passage leading to the gas meter 1. A valve (hereinafter referred to as a shutoff valve).
以上のように構成されたガス遮断装置について、以下そ
の動作について説明する。矢印の如くガスが流れ、流量
センサ2からガス流量信号を制御部4に伝える。制御部
4はガス流量に異常があった場合とか、ある流量が異常
時間続いた場合に、遮断弁5を動作させ、ガス通路を遮
断する。またメータのガスモレによる下流側の圧力の低
下をダイヤフラム式の圧力センサ3で検知し、遮断弁5
を動作させ、ガス通路を遮断する。The operation of the gas shutoff device configured as described above will be described below. Gas flows as indicated by an arrow, and a gas flow rate signal is transmitted from the flow rate sensor 2 to the control unit 4. The control unit 4 operates the shutoff valve 5 to shut off the gas passage when the gas flow rate is abnormal or when a certain flow rate continues for an abnormal time. Further, the diaphragm type pressure sensor 3 detects the pressure drop on the downstream side due to the gas leakage of the meter, and the shutoff valve 5
To shut off the gas passage.
発明が解決しようとする問題点 しかしながら、メータの上流側にもコックがついてお
り、最近の消費者は夜中はこのコックを止じる人が多く
なってきている。このコックを止じると圧力センサがは
たらき、下流側の圧力低下でないのに遮断弁が止じてし
まう。安全装置として作動するはずのガス遮断装置が安
全なときに遮断し、消費者の混乱をまねく。また、制御
部センサ類が故障した場合には直列的な信頼性構成にな
っているため遮断弁が作動しなくなり危険な状態になる
可能性がある。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, there is a cock on the upstream side of the meter, and the number of people who stop this cock at night is increasing in recent consumers. When this cock is stopped, the pressure sensor operates, and the shutoff valve stops even if the pressure on the downstream side does not drop. When the gas shutoff device, which should operate as a safety device, shuts off when it is safe, it causes confusion for consumers. Further, if the control unit sensors fail, the shut-off valve may not operate because of the serial reliability configuration, which may cause a dangerous state.
問題点を解決するための手段 上記問題点を解決するために本発明のガス遮断装置は、
従来の構成のダイヤフラム式の圧力センサのかわりに、
ガス通路の自己保持型遮断弁の下流側に弁座と球体とそ
の球体を弾性体で固定した圧力弁と、前記圧力弁の球体
の変動を検出し制御部へ入力する検出部を備えている。Means for Solving the Problems In order to solve the above problems, the gas shutoff device of the present invention is
Instead of the diaphragm type pressure sensor of the conventional configuration,
On the downstream side of the self-holding shutoff valve in the gas passage, there are provided a valve seat, a sphere, a pressure valve in which the sphere is fixed by an elastic body, and a detection unit for detecting a variation of the sphere of the pressure valve and inputting it to a control unit. .
作 用 本発明は上記の構成によって、ガス漏れによるメータの
下流側の圧力の低下があったとき球体が押され弁座にあ
たりガス漏れを停止させる。また元コックを止めても圧
力弁ははたらかない。また検知部により圧力の低下を制
御部に知らせ遮断弁を止じることができる。Operation According to the present invention, when the pressure on the downstream side of the meter is decreased due to the gas leakage, the sphere is pushed to the valve seat to stop the gas leakage. The pressure valve does not work even if the main cock is stopped. Further, the detection unit can notify the control unit of the pressure drop and stop the shutoff valve.
実施例 以下本発明の一実施例のガス遮断装置について、図面を
参照しながら説明する。第1図は本発明の一実施例にお
けるガス遮断装置の構成図を示す。第1図において、第
2図と同じ番号は同一物を表わし、機能的にも従来例と
同じである。6は磁石を内部にうめ込んだ球体、7は弾
性体としてのスプリングで、一方をメータの内壁に固定
し、一方には球体6がついている。8は弁座である。9
は球体7の磁界の位置を検出する検出器で、ここではリ
ードスイッチを使用している。10は球体6、スプリン
グ7、弁座8で構成された圧力弁である。Embodiment A gas shutoff device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of a gas shutoff device in one embodiment of the present invention. In FIG. 1, the same numbers as those in FIG. 2 represent the same items, and are functionally the same as the conventional example. 6 is a sphere having a magnet embedded therein, and 7 is a spring as an elastic body, one of which is fixed to the inner wall of the meter, and one of which has a sphere 6. 8 is a valve seat. 9
Is a detector for detecting the position of the magnetic field of the sphere 7, and a reed switch is used here. Reference numeral 10 is a pressure valve composed of a sphere 6, a spring 7, and a valve seat 8.
以上のように構成されたガス遮断装置について、以下第
1図を用いてその動作を説明する。ガス漏れによる下流
側の圧力低下があると、球体6はスプリング7の力に反
して弁座8にあたり自動的にガスを遮断する。またリー
ドスイッチ9により球体6の変動により圧力の低下があ
ったことを制御部4に伝え、遮断弁5を遮断しガス通路
を遮断する。これによると、制御部が故障していても圧
力弁によりガス通路を遮断するために並列的な信頼性の
構成となり信頼性がたかくなる。また、元コックを止じ
ても圧力弁が働くことがなく、従来のダイヤフラム式の
圧力センサのように誤作動することがない。The operation of the gas shutoff device configured as described above will be described below with reference to FIG. When there is a pressure drop on the downstream side due to gas leakage, the sphere 6 hits the valve seat 8 against the force of the spring 7 and automatically shuts off the gas. Further, the reed switch 9 informs the control unit 4 that the pressure has dropped due to the fluctuation of the sphere 6, shuts off the shutoff valve 5 and shuts off the gas passage. According to this, even if the control unit is out of order, the gas passage is shut off by the pressure valve, so that the configuration becomes parallel and reliability is increased. Further, even if the main cock is stopped, the pressure valve does not work, and it does not malfunction like the conventional diaphragm type pressure sensor.
発明の効果 以上のような本発明の効果について以下に述べる。Effects of the Invention The effects of the present invention as described above will be described below.
(1) 従来のダイヤフラム式圧力センサに比べ、ガス通
路を遮断する機能として遮断弁と圧力弁という並列的な
信頼性の構成がとれ、ガス遮断装置の信頼性を上げるこ
とができる。(1) Compared with the conventional diaphragm type pressure sensor, a parallel structure of a shutoff valve and a pressure valve can be adopted as a function of shutting off the gas passage, and the reliability of the gas shutoff device can be improved.
(2) 元コックを止じることによる誤作動がなくなり、
消費者の混乱を防ぐことができる。(2) There is no malfunction due to stopping the original cock,
It can prevent consumer confusion.
(3) ダイヤフラム式の圧力センサと圧力弁は最終機能
としては同じであるにもかかわらず、ダイヤフラム式は
ガス通路とのキ密性を保たなければならなく、ガス漏れ
の危険性があるが圧力弁はガス通路と検出部が完全に独
立でガス漏れの心配がなく、信頼性があがる。(3) Although the diaphragm type pressure sensor and pressure valve have the same final function, the diaphragm type must maintain tightness with the gas passage, which may cause gas leakage. The pressure valve is completely independent of the gas passage and the detector, so there is no risk of gas leakage and reliability is improved.
第1図は本発明の一実施例におけるガス遮断装置の構成
図、第2図は従来のガス遮断装置の構成図である。 2……流量センサ、4……制御器、5……遮断弁、6…
…球体、7……弾性体、8……弁座、9……検出器、1
0……圧力弁。FIG. 1 is a block diagram of a gas shutoff device in one embodiment of the present invention, and FIG. 2 is a block diagram of a conventional gas shutoff device. 2 ... Flow rate sensor, 4 ... Controller, 5 ... Shut-off valve, 6 ...
... sphere, 7 ... elastic body, 8 ... valve seat, 9 ... detector, 1
0 ... Pressure valve.
Claims (1)
己保持型遮断弁と、前記流量センサからの信号を受けて
前記遮断弁を制御する制御部と、前記ガス通路の自己保
持型遮断弁の下流側に弁座と球体とその球体を弾性体で
ガス通路内壁に固定した圧力弁と、前記圧力弁の球体の
変動を検出し、前記制御部へ入力する検出部を備えたガ
ス遮断装置。1. A gas flow rate sensor and a self-holding shutoff valve provided in a gas passage, a control unit for controlling the shutoff valve in response to a signal from the flow sensor, and a self-holding shutoff valve for the gas passage. A gas cutoff device comprising a valve seat, a sphere, a pressure valve in which the sphere is fixed to an inner wall of a gas passage by an elastic body on the downstream side, and a detection unit which detects a variation of the sphere of the pressure valve and inputs the variation to the control unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11972086A JPH0659328B2 (en) | 1986-05-23 | 1986-05-23 | Gas shutoff device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11972086A JPH0659328B2 (en) | 1986-05-23 | 1986-05-23 | Gas shutoff device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62275475A JPS62275475A (en) | 1987-11-30 |
JPH0659328B2 true JPH0659328B2 (en) | 1994-08-10 |
Family
ID=14768448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11972086A Expired - Lifetime JPH0659328B2 (en) | 1986-05-23 | 1986-05-23 | Gas shutoff device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0659328B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0211175A (en) * | 1988-06-28 | 1990-01-16 | Matsushita Electric Ind Co Ltd | Fluid interrupting device with communicating function |
-
1986
- 1986-05-23 JP JP11972086A patent/JPH0659328B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS62275475A (en) | 1987-11-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |